JP2016036264A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine capable of operating a reverse operation tool, while sitting on a drive seat, operatively in a state of being little mixed with another operation tool.SOLUTION: A harvesting machine comprises: a reversal mechanism for revering a work part capable of selectively changing into either a normal rotation or a reversal rotation; a reversal operation tool 106 or 107 for performing an ON/OFF of the reversal mechanism manually; a drive seat 15b; and a side panel box 15c disposed on a transverse side of the drive seat 15b and equipped with a speed change operation tool 111. The reversal operation tool 106 or 107 is disposed between said drive seat 15b and the side panel box 15c.SELECTED DRAWING: Figure 16

Description

  The present invention includes a working unit that can be selectively switched between a normal rotation state and a reverse rotation state, a reverse rotation mechanism that reverses the work portion, and a reverse rotation operation tool that manually turns on and off the reverse rotation mechanism. It relates to the harvesting machine.

As a harvesting machine provided with a working part capable of forward / reverse rotation, a reverse rotation mechanism for reversing the work part, and a reverse operation tool, there is a structure shown in the following [1] or [2].
[1] No hydrostatic type for driving a fan for cooling a radiator by operating an operation lever provided on a front operation post in front of the driver's seat or operating a pedal-type operation tool on the driver's floor. A structure in which the step transmission is operated in reverse (see Patent Document 1).
[2] A forward / reverse switching lever is provided between the right mowing column that supports the reaping device and the cab, and the forward / reverse switching lever located on the outside of the driver's seat over the side column is operated. (See Patent Document 2).

JP 2013-155719 A (paragraphs [0007, 0008, 0011 to 0014], FIG. 2, FIG. 7, FIG. 9) JP 2014-8009 A (paragraphs [0045, 0056], FIG. 3, FIG. 8, FIG. 9, FIG. 10)

  The structure described in Patent Document 1 is useful in that the fan-driven hydrostatic continuously variable transmission for cooling the radiator can be operated in reverse while being seated on the driver's seat. Is something. However, since the operation tool is a front operation post or a driving unit floor with many other operation target devices, the operation target is further increased by adding a reverse operation tool that is not frequently operated. May be misleading.

  In the structure described in Patent Document 2 above, in order to operate the forward / reverse switching lever, it must be operated while reaching out from the driver seat side over the upper side of the side column. There is a problem that it is difficult to do.

  In the harvesting machine, the reverse operation tool can be performed with good operability in a state in which there is little confusion with other operation tools in a state where the harvesting machine is seated on a driver's seat.

[Solution 1]
The technical means of the harvesting machine in the present invention taken to solve the above problems includes a working unit that can be selectively switched between a normal rotation state and a reverse rotation state, and a reverse rotation mechanism that reverses the working unit. A reversing operation tool for manually turning on and off the reversing mechanism, a driving seat, and a side panel box provided with a shifting operation tool on a lateral side of the driving seat. And the side panel box.

[Operation and effect of invention according to Solution 1]
According to the configuration of the present invention according to the above solution 1, since the space between the driver seat and the side panel box is used as the space for arranging the reverse operation tool, the space between the driver seat and the side panel box is used. There is an advantage that it is possible to make a compact arrangement by making effective use of the free space generated.
In addition, the reversing operation tool placed in this space is located in a state where both the left and right sides are shielded by the driver seat and the side panel box located on both sides, so there is a possibility that the human body and other objects may touch unexpectedly. This is also advantageous in that it is easy to avoid the possibility of reverse rotation without being conscious.
And the position where this reverse operation tool is arrange | positioned is a position different from places on the operation panel etc. where other various apparatuses are arrange | positioned, between a driver's seat and a side panel box. Since it is a space, there is little possibility of being operated by mistake with other operation tools. In addition, since the position is close to the driver's seat, there is an advantage that the operability may be reduced.

[Solution 2]
Another technical means of the present invention taken to solve the above-described problem is that the reverse operation tool is biased to a state where the working unit is switched to a normal rotation state, and is switched to the normal rotation state. The reverse operation tool is configured to overlap with a region where the side projection surface of the side panel box exists.

[Operation and effect of invention according to Solution 2]
According to the configuration of the invention relating to the above solution 2, the reverse operation tool is urged to operate against the urging force because the working unit is urged to a state in which the working unit is switched to the normal rotation state. If not done, it will not be reversed. In addition, since the reverse rotation operation tool in the normal rotation state is configured to overlap with the region where the side projection surface of the side panel box exists, there is an advantage that there is less possibility of being inadvertently switched to the reverse rotation state. is there.

[Solution 3]
The other technical means of the present invention taken in order to solve the above-described problems are that the reverse rotation mechanism includes a first reverse rotation mechanism for reversing a cutting unit drive system as the working unit, and a radiator cooling fan drive as the working unit. A second reversing mechanism for reversing the system, wherein the reversing operation tool comprises a first operating tool for operating the first reversing mechanism and a second operating tool for operating the second reversing mechanism. .

[Operation and effect of invention according to Solution 3]
According to the configuration of the invention relating to the above solution 3, since the reverse operation tool for reversing the cutting unit drive system and the reverse operation tool for reversing the radiator cooling fan drive system are separately provided, There is an advantage that the reverse of the radiator cooling fan can be performed separately.

[Solution 4]
Another technical means of the present invention taken to solve the above-described problem is that the first operating tool and the second operating tool are configured so as to be capable of pushing and pulling, and arranged side by side in a front view. And the pulling operation direction is the same or substantially the same direction.

[Operations and effects of invention according to Solution 4]
According to the configuration of the invention relating to the solving means 4 described above, the first operation tool and the second operation tool for the reverse operation are arranged side by side, can be pushed and pulled, and have the same pulling operation direction. Alternatively, since they are configured in substantially the same direction, it can be operated without difficulty even in a relatively narrow space between the driver's seat and the side panel box.
In other words, if it is necessary to operate while greatly changing the operation direction, it is difficult to operate in a narrow space, and if they are operated in different directions, they may interfere with each other. In some cases, the pulling operation directions are the same or substantially the same, which is advantageous in that there is no possibility of such a problem.

[Solution 5]
In another technical means of the present invention taken to solve the above-described problem, the first operating tool and the second operating tool are arranged so as to be lined up back and forth in a side view in the forward rotation state. That is.

[Operation and effect of invention according to Solution 5]
According to the configuration of the invention relating to the solving means 5 described above, the first operation tool and the second operation tool are arranged side by side in the front and rear, so that the width in the left-right direction is not taken and the arrangement in the narrow space is performed. There is an advantage that it is easy to perform.

[Solution 6]
Another technical means of the present invention taken to solve the above-mentioned problems is that the first operating tool is constituted by an operating rod for reversing the cutting unit driving system, and the second operating tool is driven by the radiator cooling fan. It is comprised by the wire operation tool which reverses a system | strain, and the holding part of the said 2nd operation tool is arrange | positioned in the position higher than the holding part of the said 1st operation tool.

[Operations and Effects of Invention According to Solution 6]
According to the configuration of the invention relating to the solution means 6 described above, the second operating tool is configured by a wire operating tool, and therefore can be easily disposed at an arbitrary position, and the first operating tool is configured by an operating rod. The grip portion of the first operating tool can be easily extended to the vicinity of the operator who is seated in the driver's seat.
Therefore, by positioning the grip portion of the second operation tool higher than the grip portion of the first operation tool, the operation of the first operation tool of the operation rod which is close to the operator and whose operation direction is easy to stabilize is performed with the driver seat. Easy operation even in a narrow space between the side panel box. And the second operation tool of the wire operation tool that is far from the operator and difficult to stabilize the operation direction can be operated outside the narrow space between the driver seat and the side panel box by providing it at a high position. As a result, it is easy to operate in a wide space.
Thereby, there exists an advantage which can operate the 1st operation tool and the 2nd operation tool with sufficient operativity.

[Solution 7]
Another technical means of the present invention taken in order to solve the above-mentioned problem is provided with a driving cabin, wherein the first operating tool and the second operating tool are disposed inside the driving cabin, and the first operating tool is provided. One of the tool and the second operating tool is supported by the rear wall of the driving cabin, and the other of the first operating tool and the second operating tool passes through the lower side of the rear wall. It is that it is supported by.

[Operation and effect of invention according to Solution 7]
According to the configuration of the invention relating to the solving means 7 described above, one of the first operating tool and the second operating tool can be supported on the rear wall of the driving cabin to simplify the support structure.
The other of the first operating tool and the second operating tool can be directly linked to the linkage mechanism outside the operation cabin by supporting the other side of the lower side of the rear wall. Thereby, there exists an advantage that it is easy to simplify the linkage structure of the said other operation tool and the linkage mechanism outside a driving | running | working cabin.

It is a right view of a combine. It is a whole top view of a combine. It is a side view which shows the power transmission structure of an engine, a transmission, and a threshing apparatus. It is a top view which shows the power transmission structure of an engine, a transmission, and a threshing apparatus. It is a side view which shows the power transmission structure from an engine to a radiator cooling fan. It is a top view which shows the power transmission structure from an engine to a radiator cooling fan. It is a diagram which shows a power transmission system. It is a top view in the section which meets a horizontal direction which shows a forward / reverse rotation selection mechanism. It is a rear view in the section which meets the up-and-down direction which shows a forward / reverse selection mechanism. It is a disassembled perspective view which shows the attachment structure of a forward / reverse rotation selection mechanism. It is a side view which shows the normal transmission state in a normal / reverse rotation selection mechanism. It is a side view which shows the reverse transmission state in a forward / reverse selection mechanism. It is an enlarged side view showing a forward / reverse selection mechanism. It is a top view which shows the inside of an operation cabin. It is a side view which shows the arrangement | positioning location of the reverse operation tool in a driving | running cabin. It is a front view which shows the arrangement | positioning location of the reverse operation tool in a driving | running cabin. It is sectional drawing which shows the arrangement | positioning structure of the cutting part reverse rotation operation tool in an operation cabin. It is a top view of the operation box in a driving cabin. It is a side view which shows the operation mechanism of the threshing clutch lever and the cutting clutch lever in a driving | running cabin. It is a perspective view which shows the axial support structure of a threshing clutch lever and a cutting clutch lever. It is sectional drawing which shows the axial support structure of a threshing clutch lever and a cutting clutch lever.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
FIG.1 and FIG.2 has shown the whole straw input type | mold (normal type) combine which is an example of the harvester which concerns on this invention. FIG. 1 shows the right side of the entire aircraft, and FIG. 2 shows the plane.

As shown in these drawings, the full throw-in type combine described above has a pair of left and right front wheels 2F, 2F (corresponding to a front traveling device) and a pair of left and right rear wheels 2R, 2R ( A traveling device 2 is provided which corresponds to a rear traveling device.
A driving cabin 15 (corresponding to the driving part) is provided at the front part of the body frame 1, a threshing device 4 and a glen tank 5 are provided on the rear side thereof, and a waste straw processing device 16 (a waste wall processing part is provided at the rear part). Equivalent). Further, a self-propelled machine body is configured with a cutting processing device 17 (corresponding to a working portion) that moves up and down around a horizontal axis (not shown) along the left-right direction with respect to the vehicle body frame 1. .
The engine 3 is mounted on the lateral side of the threshing device 4 at the front portion on the body frame 1, and the radiator 7 is disposed at a rear position away from the engine 3. A fuel tank 14 is mounted on the opposite side of the threshing device 4 from the engine 3 and the radiator 7. The power of the engine 3 is transmitted to the threshing device 4, the mowing processing device 17, the radiator cooling fan 70 (corresponding to the working unit) that cools the radiator 7, and the like, in addition to the traveling device 2 described above.

  As shown in FIGS. 3 and 4, power is transmitted to the front wheels 2 </ b> F of the traveling device 2 through a front wheel drive shaft 24 that extends left and right from a transmission 20 attached to the front portion of the vehicle body frame 1. The In other words, from the front wheel drive shaft 24 via the speed reduction case 25 provided in a state of entering a recessed portion formed on the surface of the front wheel 2F facing the inward side of the body, and the front axle 2a supported by the speed reduction case 25 Power is transmitted to the front wheel 2F.

  As shown in FIGS. 1 and 2, the rear wheel 2 </ b> R is provided at the left and right ends of a rear wheel support frame 10 that is mounted on the rear portion of the vehicle body frame 1 so as to be swingable left and right around a longitudinal axis (not shown). It is provided on the side. Further, it is constituted by a steering wheel provided with a rear axle 2b that can be steered around the vertical swing axis y1. The rear wheel 2R is composed of a tire wheel whose left-right width and diameter are set smaller than those of the front wheel 2F, and rotates around a horizontal horizontal axis x2 of the rear axle 2b.

On the left and right lateral sides of the self-propelled aircraft, there is an exterior cover 9 (on the side cover) so as to cover the aircraft lateral sides located between the front wheels 2F and the rear wheels 2R below the Glen tank 5 Equivalent).
The exterior cover 9 is supported so as to be able to undulate and swing around a swing fulcrum z1 along the front-rear direction provided in the vicinity of the upper end side, the wide cover surface 9A is closed along the vertical direction, and the cover surface 9A is horizontal. An upper cover portion 90 configured to be switchable to an open posture along the direction, and located below the lower edge of the lower edge of the upper cover portion 90 in the closed posture and positioned laterally outside the threshing device 4 and the engine 3 And a lower cover portion 91 arranged to do so. The lower cover portion 91 is not swingably opened / closed around the swing axis z <b> 1 like the upper cover portion 90, but for placing and supporting the glen tank 5 so as to cover the lower side of the engine 3. The tank support 13 provided is configured to be detachable through an appropriate fitting.

[Mowing processing device] Reverse rotation mechanism As shown in FIGS. 1 to 3, a mowing processing device 17 that moves up and down around the horizontal axis along the horizontal direction is provided on the front side of the threshing device 4 mounted on the vehicle body frame 1.
This cutting processing device 17 cuts the feeder 17A that feeds crops such as stalks that have been cut to the threshing device 4, the scraping reel 17B that scrapes the crop tips such as planted stalks, and the plant side. A mowing device 17C and a lateral feed auger 17D that collects the harvested crops at the center in the cutting width direction are provided, and the crops are harvested, fed into the feeder 17A, and supplied to the threshing device 4.
Although not shown, the feeder 17A is equipped with an endless belt-like carrier that rotates in the front-rear direction inside a rectangular tube-like case, and is configured to convey the fed harvested crops upward and rearward. ing. The crop conveyance direction by the feeder 17A is the front-rear direction along the barrel rotation axis p0 (see FIG. 3) of the barrel 40 in the threshing device 4, and the scraping reel 17B or the like is moved along with the lifting operation of the feeder 17A portion. The reaping device 17C and the transverse feed auger 17D are also configured to be able to move up and down.

[Threshing equipment]
As described above, the threshing device 4 is disposed on the body frame 1 so that the barrel rotation axis p0 is along the front-rear direction. This threshing device 4 is arranged in the front-rear direction interval between the front wheel 2F and the rear wheel 2R in the front-rear direction, and is also arranged in a state of being located within the interval width between the left and right front wheels 2F and the rear wheel 2R in the left-right direction. Yes.
Further, as shown in FIG. 1, the threshing device 4 has a lower surface slightly lower than the front axle 2a of the front wheel 2F that is a non-steering wheel and slightly higher than the rear axle 2b of the rear wheel 2R that is a steering wheel. In position. That is, the front axle 2a of the front wheel 2F that is a non-steering wheel or the rear axle 2b of the rear wheel 2R that is a steering wheel is disposed at substantially the same height.
The threshing device 4 arranged in this way is arranged in a state where the barrel rotation axis p0 of the threshing device 4 is biased to the left side with respect to the center line CL in the left-right direction of the machine body. Since the center line in the left-right direction of the threshing device 4 is present at the same position as the front and rear barrel rotation axis p0 of the barrel 40 disposed inside, the entire threshing device 4 is also It is arranged in a state of being deviated to the left with respect to the center line CL in the left-right direction of the airframe.

The feeder 17A for supplying the harvested crop to the threshing device 4 is arranged in a state of being deviated to the left side with respect to the center line CL in the left-right direction of the machine body as in the threshing device 4, as shown in FIG. In addition, the transmission 20 that is biased to the right with respect to the center line CL in the left-right direction of the machine body is disposed at a position that partially overlaps in plan view.
The waste straw processing device 16 is integrally attached to the rear portion of the threshing device 4, and is configured to cut the waste straw after the threshing treatment and discharge it to the outside.

The threshing device 4 is formed in a rectangular box shape that is long in the longitudinal direction of the machine body, and includes a tang 41 at the front end thereof (see FIG. 7). The chopping shaft 41a provided with the blower blades of the tang ridge 41 is extended to the right lateral outer side of the threshing case 4A, and the threshing for receiving the power transmitted from the engine 3 to the threshing device 4 at the extending portion of the threshing shaft 41a. An input pulley 41b is attached.
The threshing device 4 is not provided with a secondary tang and is configured to blow air to the selected portion using only the tang 41.

  Inside the threshing device 4, a handling cylinder 40 for threshing the harvested crop fed from the feeder 17A side is arranged so as to be driven to rotate around a handling cylinder axis 40a in the front-rear direction. In addition to the handling barrel 40, a sorting processing device 42 that swings and sorts the harvested crop that has been threshed by the handling barrel 40 and the like are provided along with the air blowing action of the Karatsu 41.

[Glen tank]
As shown in FIGS. 1 and 2, the Glen tank 5 is located on the rear side of the operation cabin 15, on the right side of the body frame 1, and on the left side of the tank support 13. Is provided across the upper side of the threshing device 4.
The Glen tank 5 is mounted with a box-shaped tank body 51 having a width in the left-right direction over almost the entire width in the left-right direction of the fuselage on the upper side of a bottom frame 50 formed in a lattice shape by assembling various steel materials such as square pipes. It is.
The bottom frame 50 and the tank body 51 are integrally connected, and supported by a swing support shaft 52 provided at the upper end of the tank support 13 so as to be swingable around a swing axis z2 in the front-rear direction. Has been.

As shown in FIGS. 1, 5, and 6, the tank support 13 is disposed on the vehicle body frame 1 between the front wheel 2 </ b> F and the rear wheel 2 </ b> R at the right lateral side portion of the threshing device 4. . The tank support 13 includes an outer support 13 </ b> A disposed on the side farther from the threshing device 4 and an inner support 13 </ b> B disposed on the side closer to the threshing device 4 than that. The lower end portion of the outer support column 13A and the lower end portion of the inner support column 13B are fixed to the vehicle body frame 1, and the upper end portions of the outer support column 13A and the inner support column 13B are connected to the upper frame 13C. An end of the grain discharge port 5A corresponding to one end of the grain tank 5 in the left-right direction is connected to and supported by the upper frame 13C so as to swing up and down around the swing axis z2 in the front-rear direction. .
A hydraulically driven dump cylinder 53 is interposed between the inner column 13 </ b> B of the tank support 13 and the bottom frame 50 of the Glen tank 5. The expansion and contraction of the dump cylinder 53 causes the Glen tank 5 to swing up and down around the swing axis z2 between a storage posture in which the bottom surface of the tank body 51 is horizontal or substantially horizontal and a discharge posture in which the bottom surface is raised. The posture can be changed by moving it.

On the vehicle body frame 1 provided with the tank support 13, as shown in FIGS. 5 and 6, on the rear side of the engine 3, the equipment mounting base 26, maintenance, etc. using the lower space of the tank support 13. A work space s1 that is easy to use for this work is provided.
A compressor 3C, which will be described later, is installed on the device mounting base 26, and a valve unit 27 is provided in a state of being located on the inner side of the compressor 3C. The compressor 3C and the rear side of the valve unit 27 The battery 28 is mounted in the position. The work space s1 is formed between the rear end of the equipment mounting base 26 and the front end of the radiator 7 and closer to the body side than the lateral outer end of the body frame 1, and an operator standing on the ground enters the work space s1. In this state, it is possible to perform maintenance on the equipment on the equipment mounting base 26 on the front side and the periphery of the radiator 7 on the rear side.
The device mounting table 26 and the work space s1 are covered by the outer cover 9 located outside thereof when the outer cover 9 is in the closed position, and the outer side is covered when the outer cover 9 is switched to the open position. Is released.

[Power transmission structure]
Next, a power transmission structure that transmits the power of the engine 3 to the threshing device 4, the radiator cooling fan 70, and the like will be described.
As shown in FIGS. 2, 4, and 7, the engine 3 is disposed at a position on the right outer side on the vehicle body frame 1 with a crankshaft (not shown) along the left-right direction of the body.
An output pulley 30 (corresponding to an engine output rotator) as a first output unit together with the flywheel 3A is provided on one end side (the inward side of the body) of the engine 3 in the state where the axial direction is along the left and right direction of the body. ) Is provided. An output shaft 31 as a second output portion protrudes from the other end side in the left-right direction (outside the machine body). The output shaft 31 has a second output pulley 31a, a third output pulley 31b, and a fourth output. A pulley 31c is attached.

[Power transmission structure by the first output unit]
As shown in FIGS. 3 and 4, the transmission 20 to which the driving force is transmitted from the output pulley 30 that is the first output portion of the engine 3 is on the front side of the engine 3 and on the side closer to the body side than the engine 3 (right and left sides). On the left in the direction).
The transmission 20 is provided with an input shaft 21 that protrudes outward from the machine body (right side in the left-right direction). An input / output pulley 22 is mounted on the input shaft 21 so as to rotate integrally therewith. It is. The three first transmission belts 32 </ b> A are wound between the input / output pulley 22 and the output pulley 30, and engine power is input from the output pulley 30 to the transmission 20.

The input / output pulley 22 includes a first rotating body portion 22A having three belt grooves for winding the three V belts of the first transmission belt 32A, and a second transmission belt 32B described later. A second rotating body portion 22B having two belt grooves for winding is provided.
The first rotator portion 22A and the second rotator portion 22B are constituted by a multiple pulley integrally molded, the first rotator portion 22A side is located on the outer side of the machine body where the engine 3 is present with a large diameter, The rotating body portion 22B has a small diameter, and is located closer to the body side where the threshing device 4 exists.
The transmission 20 is provided with a continuously variable transmission 23 for shifting the power input from the input shaft 21 and transmitting it to the traveling device 2 on the side opposite to the side where the input / output pulley 22 is provided. The power shifted by the continuously variable transmission 23 is configured to be output from the front wheel drive shaft 24 via a transmission mechanism (not shown) provided inside the transmission 20.

A second transmission belt 32 </ b> B configured by a set of two V belts, which is an example of an endless rotation belt, is wound around the second rotating body portion 22 </ b> B of the input / output pulley 22.
The second transmission belt 32B is wound around the threshing input pulley 41b provided on the tang shaft 41a of the threshing device 4, and the engine power is transmitted from the second rotating body portion 22B through the second transmission belt 32B. It is comprised so that it may input.
The threshing input pulley 41b on the side of the tang shaft 41a is formed to have a larger diameter than the second rotating body portion 22B and the output pulley 30, and is configured so that the engine speed is reduced and transmitted to the tang shaft 41a. ing.

As shown in FIGS. 3 and 4, the threshing device 4 is mounted on the vehicle body frame 1 on the rear side of the transmission 20, and the tang shaft 41 a is arranged in the front-rear direction of the engine 3 than the input shaft 21 of the transmission 20. The position is close to the axis x3 of the output pulley 30 and the output shaft 31. Specifically, as shown in FIG. 4, when viewed in the direction of the axial center x3 of the output pulley 30 and the output shaft 31 of the engine 3, the tang shaft 41 a is in a position overlapping the output pulley 30.
Therefore, the output pulley 30 and the threshing input pulley 41b overlap each other, and the first transmission belt 32A and the second transmission belt 32B are also arranged in a positional relationship that overlap each other.

In plan view, as shown in FIG. 4, the output pulley 30, the input / output pulley 22, and the threshing input pulley 41 b are also arranged between the engine 3, the transmission 20, and the threshing device 4. The input / output pulley 22 is arranged such that the first rotating body portion 22A is close to the engine 3 side and the second rotating body portion 22B is close to the transmission 20 and the threshing device 4.
Therefore, as a matter of course, the first transmission belt 32 </ b> A and the second transmission belt 32 </ b> B are also disposed between the engine 3, the transmission 20, and the threshing device 4.

A first tension wheel 35 is provided on the first transmission belt 32A wound around the output pulley 30 of the engine 3 and the first rotating body portion 22A of the transmission 20.
The second transmission belt 32B wound around the second rotating body portion 22B of the transmission 20 and the threshing input pulley 41b of the threshing device 4 is provided so that the second tension ring 36 acts on the second transmission belt 32B.

As shown in FIGS. 4 and 5, the first tension ring 35 has one end side of the support shaft 35a extended in one direction long, and the extended portion is connected to the free end side of the swingable first arm member 35b. The biasing mechanism 37 is supported on the free end side.
As shown in FIG. 4, the first arm member 35 b is an L-shaped support base frame that is lifted up to a position higher than the transmission 20 so as to be a mounting base for the driving part frame 11 in the vehicle body frame 1. 12 is pivotally supported on the base end side. The base end side of the urging mechanism 37 is pivotally supported by a bracket 1 a fixed to the vehicle body frame 1 on the side close to the engine 3.
The urging mechanism 37 is equipped with a compression spring 37 a that urges the urging mechanism 37 in a direction that shortens the distance between the support shaft 35 a and the pivotally supported portion on the proximal end side of the urging mechanism 37. A biasing force is applied to the first tension wheel 35 so that the first transmission belt 32A is always biased to the tension side by the biasing force of the compression spring 37a.

The second tension ring 36 is attached to a second arm member 36b whose pivot 36a is pivotally supported on the upper side of the transmission 20 and configured to be swingable. An operation member 36c having a coil spring is connected to the middle position in the length direction of the second arm member 36b, and an operation cabin such as an operation lever that can be swung is connected to the operation member 36c. The threshing clutch lever 114 provided in 15 can be switched between the threshing clutch engaged state and the disengaged state.
As a result, the threshing clutch is engaged so that the engine power is transmitted to the threshing device 4 by swinging the second tension wheel 36 to the lifting side and switching to the side where the second transmission belt 32B is tensioned. By releasing the lifting of the second tension wheel 36 and switching to the side where the second transmission belt 32B is relaxed, the threshing clutch disengaged state in which the transmission of the engine power to the threshing device 4 is cut off.

As shown in FIG. 7, the engine power input to the rod shaft 41a is a harvesting side drive mechanism 43 for driving the handling cylinder 40 and a harvesting side drive that transmits the power to the harvesting processing device 17 including the feeder 17A. The mechanism 44 and the sorting side driving mechanism 45 for driving the sorting processing device 42 and the like are distributed and supplied. Each of the handling cylinder side drive mechanism 43, the cutting side drive mechanism 44, and the sorting side drive mechanism 45 includes a transmission belt. The power is also transmitted from the lower transmission side of the sorting-side drive mechanism 45 to the waste straw processing device 16 via the transmission belt 46.
The sorting-side drive mechanism 45 includes a transmission belt 45a that transmits power to the first screw 42a and the lifting device 47, a transmission belt 45b that transmits power to the second screw 42b and the second reduction device 48, and a swing sorting plate. And a transmission belt 45c for transmitting power to 42c.

Of the engine power input to the carp shaft 41a, the power distributed and supplied to the cutting side drive mechanism 44 is input to the forward rotation pulley 18a of the cutting drive shaft 18 of the cutting processing device 17 via the transmission belt. Yes. Further, the power distributed and supplied to the handling cylinder side drive mechanism 43 is output from the reverse rotation output pulley 49b as the reverse rotation power through the reverse rotation mechanism 49a built in the handling cylinder drive case 49. The reverse rotation power is transmitted to the cutting drive shaft 18 via a transmission belt that is stretched over the reverse rotation output pulley 49b and the reverse rotation pulley 18b of the cutting drive shaft 18.
As shown in FIG. 7, a forward rotation clutch 19A that can operate the transmission belt that transmits power to the forward rotation pulley 18a in a tension state and a relaxation state, and a transmission belt that transmits power to the reverse rotation pulley 18b in a tension state and a relaxation state. And a reverse clutch 19B operable.

The forward rotation clutch 19A and the reverse rotation clutch 19B are configured so as to transmit power in a state where the transmission belt is in tension, and not transmit power in a state in which the transmission belt is relaxed, and when one is in tension, the other is It is configured to switch between a tensioned state and a relaxed state in a contradictory manner so as to be in a relaxed state.
The forward rotation clutch 19A is in a state of tensioning the transmission belt, and the reverse rotation clutch 19B is normally biased to be in the forward rotation driving state so as to be in a relaxed state.
From this state, by pulling a reaping portion reverse operation tool 106 in the operation cabin 15 described later, the reverse rotation clutch 19B is tensioned, and the forward rotation clutch 19A is relaxed and switched to the reverse drive state. When the pulling operation of the mowing unit reverse rotation operating tool 106 is released, the original normal rotation driving state is restored.
The reversing mechanism 49a built in the barrel driving case 49, the transmission belt 49b spanned between the reversing output pulley 49b and the reversing pulley 18b of the cutting drive shaft 18, and the reversing clutch 19B serve as a working unit. A first reversing mechanism for reversing the mowing unit drive system of the mowing processing device 17 is configured.

[Power transmission structure by the second output unit]
An output shaft 31 as a second output portion projects from the other end side (outside the fuselage) of the engine 3, and power transmission in the second output portion is performed as follows.
As shown in FIGS. 4 and 7, the second output pulley 31 a, the third output pulley 31 b, and the fourth output pulley 31 c are integrally rotated on the output shaft 31 in order from the side closer to the engine 3. It is installed.

An alternator 3B is driven on the other end side (outer side of the machine body) of the engine 3 so as to rotate about a horizontal axis parallel to the axis x3 of the output shaft 31 as the second output unit. For this purpose, a power generation drive pulley 33 and a blower drive pulley 34 for driving the blower fan 102 of the blower mechanism 100 are provided.
As shown in FIG. 3, a third output belt 31 a, which is an example of an endless rotation belt, extends over the second output pulley 31 a, the power generation drive pulley 33, and the blower drive pulley 34. The transmission belt 38A is wound, and the alternator 3B and the blower fan 102 are rotationally driven with the rotation of the second output pulley 31a.

The blower fan 102 constitutes the blower mechanism 100 together with the air supply unit 101 formed on the exterior cover 9, and takes in outside air from the outside of the exterior cover 9 and blows it against the engine 3.
That is, as shown in FIG. 5, an air supply unit 101 composed of a large number of ventilation holes 101 a is formed below the front portion of the upper cover unit 90, and the upper cover unit where the air supply unit 101 is formed is formed. A blower fan 102 is provided at a position facing the surface on the side of the airframe 90. Further, a partial arc-shaped fan shroud 103 is provided on the surface of the upper cover 90 at the location where the air supply unit 101 is formed so as to be located slightly outside the rotational radius of the blower fan 102. The fan shroud 103 is also provided as a blower mechanism 100.

Of the third output pulley 31b and the fourth output pulley 31c attached to the output shaft 31, the fourth output pulley 31c farthest from the engine 3 has a smaller diameter than the third output pulley 31b. .
A fifth transmission belt 38C is wound around the fourth output pulley 31c so as to transmit the driving force to the compressor 3C provided on the rear side of the engine 3.

[Transmission to radiator cooling fan]
As shown in FIGS. 5, 6, and 7, the power transmission to the radiator cooling fan 70 includes the fourth transmission belt 38 </ b> B wound around the third output pulley 31 b attached to the output shaft 31, and the engine 3. The power of the engine 3 is extracted as the driving force of the radiator cooling fan 70 via the relay shaft 55 provided at the upper rear part away from the motor and the forward / reverse rotation selection mechanism 6 described later.

The relay shaft 55 includes a relay input pulley 55a (corresponding to a driving rotary body) at an end portion on the outer side of the machine body (right end part in the left-right direction), and an end part on the inner side of the machine body (left side in the left-right direction). A pair of relay output pulleys 55b and 55c (corresponding to a drive rotator) are provided at the end). The fourth transmission belt 38B is wound around the relay input pulley 55a and the third output pulley 31b, and the rotational power of the output shaft 31 is transmitted to the relay shaft 55.
As described above, by using the relay shaft 55, the fourth transmission belt 38B is provided between the engine 3 located in the front and the radiator 7 located in the rear so that the upper part of the device mounting base 26 and the work space s1 is located. The work space s1 is arranged in a detoured state so that it can be used as a space that is easy to use for work such as maintenance.

The fourth transmission belt 38B is provided with a slack removing tension mechanism 54 on the slack side belt portion. The tension mechanism 54 includes a fixed pulley 54b pivotally supported by a support shaft 54a provided on a part of the outer support 13A of the tank support base 13. Then, a swing arm 54c that can swing around the support shaft 54a of the fixed pulley 54b is provided, and a floating pulley 54e that rotates around a support shaft 54d attached to the free end side of the swing arm 54c. ing. Furthermore, a coil spring 54f is provided that pulls and urges the swing arm 54c toward the slack eliminating side (upper right side in FIG. 6).
By providing the fixed pulley 54b, the swing arm 54c, the idle pulley 54e, and the coil spring 54f, a slack eliminating tension mechanism 54 that constantly urges the fourth transmission belt 38B toward the tight side is configured. Has been.

The forward transmission belt 56 (endless of the forward rotation system power transmission mechanism) spans a pair of relay output pulleys 55b and 55c on the relay shaft 55 side and a fan input pulley 72 (corresponding to an input rotator) on the radiator cooling fan 70 side. And a reverse transmission belt 57 (corresponding to an endless rotation belt of the reverse power transmission mechanism).
Of the forward transmission belt 56 and the reverse transmission belt 57, the forward transmission belt 56 is wound so that the inner peripheral surface thereof is in contact with the outer peripheral surface of the fan input pulley 72. The outer peripheral surface of the fan input pulley 72 is wound so as to be in contact with the outer peripheral surface.
The forward transmission belt 56 and the reverse transmission belt 57 arranged in this way constitute a forward / reverse selection mechanism 6 together with a pair of tension ring bodies 63 and 64. The forward / reverse selection mechanism 6 will be described later.

The forward transmission belt 56 and the reverse transmission belt 57 arranged in this way constitute a forward / reverse selection mechanism 6 (corresponding to a second reverse mechanism) together with a pair of tension wheels 63 and 64. The pair of tension ring bodies 63 and 64 can be selectively switched so that either one of the forward transmission belt 56 and the reverse transmission belt 57 is in a tension state and the other is in a slack state. It is configured.
The pair of tension ring bodies 63 and 64 are linked via an operation wire 108 to a fan reverse rotation operating tool 107 provided in an operation cabin 15 described later. The operation of the fan reverse operation tool 107 can be switched between a normal transmission state in which the normal transmission belt 56 is tensioned and a reverse transmission state in which the reverse transmission belt 57 is tensioned.

A radiator cooling fan 70 is provided on the inward side of the radiator 7 provided at the rear of the self-propelled airframe, and an intake case 8 is provided on the outer side of the airframe. The radiator 7 is disposed on the right side of the self-propelled airframe, and has an outward ventilation surface (not shown) provided on the side opposite to the side where the radiator cooling fan 70 with the fan shroud 70a is provided. On the other hand, outside air is introduced from the intake case 8 side.
The intake case 8 includes a lower case portion 8A arranged so as to face the outer side of the radiator 7 and an upper case portion 8B arranged at a position higher than the radiator 7 so as to be positioned above the lower case portion 8A. It is configured in combination.
In the intake case 8, the lower case portion 8 </ b> A includes a space portion at a location facing the outward ventilation surface of the radiator 7, but the lower case portion 8 </ b> A itself is not formed with the intake port 84. In addition, air intake ports 84 for introducing outside air are formed on the front, rear, left and right surfaces of the upper case portion 8B. The lower end edge of the air inlet 84 is set to the same height as the upper end portion of the rear cover 4 </ b> B provided on the rear side of the threshing device 4. The upper case portion 8B and the lower case portion 8A communicate with each other through a ventilation opening 86 formed on the lower surface of the upper case portion 8B and the upper surface of the lower case portion 8A.

[Forward / reverse selection mechanism]
The transmission system of the radiator cooling fan 70 for cooling the radiator 7 is interposed with a forward / reverse selection mechanism 6 configured as follows.
As shown in FIGS. 8 to 13, the forward / reverse selection mechanism 6 has a forward transmission belt 56 and a reverse transmission belt with respect to a fan input pulley 72 around which the forward transmission belt 56 and the reverse transmission belt 57 are wound. The transmission state is selected so that either one of the powers 57 and 57 is not transmitted. Thus, by transmitting the power of either the forward transmission belt 56 or the reverse transmission belt 57, the rotation direction of the fan input pulley 72 is switched between the forward rotation direction and the reverse rotation direction. belongs to.
The forward rotation direction of the fan input pulley 72 is a direction in which the air blowing direction by the radiator cooling fan 70 is directed from the lateral side outward to the inward side and the suction action by the radiator cooling fan 70 acts on the radiator 7. The reverse rotation direction is a direction in which the air blowing direction by the radiator cooling fan 70 is directed in the opposite direction. In this reverse direction, the air blowing direction by the radiator cooling fan 70 is directed from the body side to the outside side, so that dust attached to the ventilation surface existing on the lateral outer side of the radiator 7 can be blown to the outside.

As shown in FIGS. 8 to 10, the fan input pulley 72 installed closer to the body side than the radiator 7 is supported by a fan mounting base 74 erected on the vehicle body frame 1.
The fan mounting base 74 is a post 74A attached along the side of the rear wheel support frame 10 provided at the rear end of the vehicle body frame 1 on the inward side of the vehicle body, and a flat plate shape provided at the upper end of the post 74A. The seat plate 74B is provided. The board 75 mounted on the upper surface side of the seat plate 74B, the rectangular tube-shaped member 76 disposed along the front-rear direction on the upper side of the substrate 75, and the plate surface on the upper surface side of the rectangular tube-shaped member 76 A mounting plate 77 standing up along the front-rear direction is fixed by welding. The seat plate 74B and the substrate 75 are connected and fixed so as to be detachable with connecting bolts with their plate surfaces abutting each other.

As shown in FIGS. 8 to 13, a support shaft 71 for pivotally supporting the fan input pulley 72 is fixed to the mounting plate 77 so as to penetrate the plate surface of the mounting plate 77. That is, a connecting plate 73 having a hook-shaped contact surface facing the mounting plate 77 is welded and fixed to the support shaft 71, and the connecting plate 73 is bolted to the mounting plate 77 with the connecting plate 73 in contact therewith. It is.
A swing plate 60 is attached to a portion of the support plate 71 that is bolt-connected to the mounting plate 77 and protrudes outward from the machine body of the mounting plate 77. The swing plate 60 includes arm portions 60A and 60B extending in two directions away from the axis p2 of the support shaft 71. One arm portion 60A is provided with a support shaft 63a of a first tension ring body 63 acting on the forward transmission belt 56, and the other arm portion 60B is provided with a second tension ring body acting on the reverse transmission belt 57. 64 support shafts 64a are provided.
An operating arm 62 for swinging the swing plate 60 about the axis p2 of the support shaft 71 is connected and fixed to one arm portion 60A.

The swing plate 60 is formed with a projecting pin 61 projecting toward the mounting plate 77 side. The head of the connecting pin 61 can be fitted on the mounting plate 77 side, and A long hole 77a is formed in a predetermined range along the arc locus of the linking pin 61 around the axis p2.
Therefore, when the linking pin 61 of the swing plate 60 is fitted into the long hole 77a of the mounting plate 77, the swing plate 60 is moved within the predetermined range of the long hole 77a as the operating arm 62 swings. Thus, it can be swung around the axis p2 of the support shaft 71.

As shown in FIG. 8, in the swing plate 60, the arm portion 60A to which the first tension ring body 63 is attached is more attached than the arm portion 60B to which the second tension ring body 64 is attached. It is located away from the plate 77 and on the outer side of the fuselage.
Further, as shown in FIGS. 11 to 13, the arm portion 60 </ b> A to which the first tension ring body 63 is attached is turned to the side (in the clockwise direction in FIG. 13) on which the forward transmission belt 56 is tensioned. A locking piece 66a for locking the coil spring 66 (corresponding to the biasing mechanism) to be biased is provided. The other end side of the coil spring 66 is connected to the support post 74A of the fan mounting base 74, and is stretched so that a biasing force to the side that always tensions the normal transmission belt 56 acts on the swing plate 60. is there.

The reverse transmission belt 57 is provided so as to be wound around the third tension ring body 65 in addition to the second tension ring body 64.
The third tension ring body 65 is pivotally supported by a support shaft 65 a provided on the mounting plate 77, and is not changed in position by the swinging operation of the operating arm 62, but is fixed on the mounting plate 77. It is provided.
As shown in FIGS. 11 and 12, the second tension ring body 64 and the third tension ring body 65 include a shaft center p1 of the relay output pulleys 55b and 55c, which are drive rotating bodies, and a fan, which is an input rotating body. The input pulley 72 is arranged in a state of being distributed on both sides of an imaginary line segment L1 that connects the axis p2 of the support shaft 71 that is the rotation center of the input pulley 72.

The forward transmission belt 56 is wound around the relay output pulley 55b on the outer side of the machine body, the fan input pulley 72, and the first tension ring body 63 among the relay output pulleys 55b and 55c that are drive rotating bodies. Yes. The relay output pulley 55 b, the fan input pulley 72, and the first tension ring body 63 are all disposed so as to be in contact with the inner peripheral side of the normal rotation transmission belt 56.
Therefore, as shown in FIG. 11, when the operating arm 62 is operated to the “forward rotation” position indicated by the solid line, the swing plate 60 swings clockwise and the forward drive belt 56 is tensioned. The first tension ring body 63 is moved. The position of the first tension ring body 63 is maintained so as to be in the forward transmission state even when the operation with respect to the operation arm 62 is released by the urging force of the coil spring 66 acting.
At this time, the arm portion 60 </ b> B of the swing plate 60 that supports the second tension ring body 64 swings (swings clockwise) to loosen the reverse transmission belt 57, and power is transmitted by the reverse transmission belt 57. Is in a state that is not performed.

The reverse transmission belt 57 includes a relay output pulley 55c, a fan input pulley 72, a second tension ring body 64, and a third tension ring body among the relay output pulleys 55b and 55c that are driving rotary bodies. It is wound over 65.
Among these, the relay output pulley 55c, the second tension ring body 64, and the third tension ring body 65 are in contact with the inner peripheral side of the reverse transmission belt 57, and the fan input pulley 72 is in contact with the outer peripheral side of the reverse transmission belt 57. Thus, the reverse transmission belt 57 is wound.
Accordingly, as shown in FIG. 12, when the operating arm 62 is operated to the “reverse rotation” position, the swing plate 60 swings counterclockwise against the urging force of the coil spring 66 and the reverse transmission belt 57 is moved. The second tension ring body 64 is moved to the tension side. The reverse transmission belt 57 that is tensioned in this state is in the reverse transmission state.
At this time, the arm portion 60 </ b> A of the swinging plate 60 that supports the first tension ring body 63 swings (swings counterclockwise) to the side that loosens the normal transmission belt 56, and the normal transmission belt 56. The power transmission by is not performed.

As described above, the forward output power transmission mechanism is configured by including the relay output pulley 55b, the fan input pulley 72, the first tension ring body 63, and the normal transmission belt 56, and the relay output pulley 55c and the fan input pulley 72 are configured. The reverse tension power transmission mechanism includes the second tension ring body 64, the third tension ring body 65, and the reverse rotation transmission belt 57.
The forward / reverse selection mechanism 6 causes the forward drive belt 56 of the forward drive power transmission mechanism and the reverse drive belt 57 of the reverse drive power transmission mechanism to swing the swing plate 60 by operating the operation arm 62, It is constituted by a tension clutch capable of intermittently motive power by selectively selecting and tensioning or relaxing.
The swing operation of the swing plate 60 by the operation of the operation arm 62 is continued even when the operation force by the operation arm 62 is released by the biasing force of the coil spring 66 while the switching state to the forward rotation side is maintained. The operation to the reverse side is continued only while the swinging plate 60 is swung by the operation of the operation arm 62. When the operation by the operation arm 62 is released, the forward rotation is performed by the biasing force of the coil spring 66. The drive is automatically restored.

  Reference numeral 67 shown in FIGS. 8 to 13 is a rod-shaped detachment prevention guide provided integrally with the rocking plate 60, and reference numeral 68 is a plate-shaped detachment prevention guide bent into an L shape. Reference numeral 77 b denotes a rod-shaped detachment prevention guide provided on the mounting plate 77. These are all for preventing the forward transmission belt 56 or the reverse transmission belt 57 from coming off.

For the forward transmission belt 56 and the reverse transmission belt 57 stretched across the pair of relay output pulleys 55b, 55c on the relay shaft 55 side and the fan input pulley 72 on the radiator cooling fan 70 side, the forward transmission A belt guide 69 for guiding the belt 56 and the reverse transmission belt 57 is provided.
The belt guide 69 does not come into contact with the forward transmission belt 56 or the reverse transmission belt 57 in a tension state in the driving state with respect to the forward transmission belt 56 and the reverse transmission belt 57, and is loosened by a predetermined amount or more. When this occurs, it is configured to support it from below. By doing so, it is possible to avoid a state in which the slack reverse rotation transmission belt 57 or the normal rotation transmission belt 56 droops greatly and comes into contact with the forward rotation transmission belt 56 or the reverse rotation transmission belt 57 that is being driven. It is. As a result, it is possible to reduce the possibility that the slack reverse rotation transmission belt 57 or the normal rotation transmission belt 56 contacts the driving normal rotation transmission belt 56 or the reverse rotation transmission belt 57 and wears each other.

[Driving cabin]
As shown in FIGS. 1, 2, and 3, the driving cabin 15 is mounted and installed on a driving unit frame 11 that is erected on the vehicle body frame 1.
Thus, the driving cabin 15 is supported by the vehicle body frame 1 via the driving unit frame 11 at a position higher than the upper edge of the outer diameter of the front wheel 2F and at a position ahead of the rear edge of the front wheel 2F. .

As shown in FIG. 14, a steering handle 15a for steering operation, a driving seat 15b, a side panel box 15c, an auxiliary seat 15d, and the like are arranged in the driving cabin 15, and the rear wheel 2R is operated by operating the steering handle 15a. It is configured to be steered.
The side panel box 15c is arranged on the right side of the driver's seat 15b. On the upper panel surface 110, the main transmission lever 111, the auxiliary transmission lever 112, the accelerator lever 113, the threshing clutch lever 114, and the cutting clutch lever 115 are provided. However, it is arranged so that it can be swung by a driver sitting on the driver's seat 15b.

  14 to 18, the feeder 17A of the reaping processing device 17 is operated in the reverse drive state between the right side portion of the driver's seat 15b and the side panel box 15c existing on the right side thereof. For this purpose, a cutting unit reverse rotation operating tool 106 and a fan reverse rotation operating tool 107 for operating the radiator cooling fan 70 in the reverse drive state are provided.

The reaping portion reverse rotation operating tool 106 has a grip portion 106b formed by bending the upper end portion of the straight rod portion 106a forward. The rod portion 106a is provided near the floor 15e of the operation cabin 15 so as to penetrate the through hole 15g provided in the rear wall 15f of the operation cabin 15. A rubber grommet 15h is provided around the through hole 15g and is closed with a sealing material 15i made of a foamed resin material.
The sealing material 15i is fixed to the rod portion 106a, and covers the upper side of the grommet 15h and seals the through hole 15g in the forward rotation operation state where the cutting portion reverse rotation operating tool 106 is not pulled as shown in FIG. In the reverse operation state in which the rod portion 106a is pulled, it moves away from the through hole 15g as indicated by the phantom line, but when it returns to the normal rotation state, it returns to the position indicated by the solid line.

The rod portion 106a of the reaping portion reverse rotation operating tool 106 is not shown in the figure, but via a proper operation linkage mechanism such as a link member, the forward rotation clutch 19A and the reverse rotation clutch 19B provided in the drive system of the feeder 17A of the reaping processing device 17 It is linked to.
In the drive system of the feeder 17A of the cutting processing device 17, the forward rotation clutch 19A is always biased to the on-side, and the reverse rotation clutch 19B is biased so as to be in a disengaged state. Therefore, when the reaping portion reverse rotation operating tool 106 is pulled against the urging force, the reverse rotation clutch 19B is operated on the entry side and the forward rotation clutch 19A is operated on the cut side only during the pulling operation. When the pulling operation of the reaping portion reverse rotation operating tool 106 is released, the forward rotation clutch 19A that has been urged toward the entering side is turned on, and the reverse rotation clutch 19B is returned to the disengaged state.

The fan reversing operation tool 107 is an operation wire linked to the gripping portion 107a for the operator sitting on the driver's seat 15b and the operation arm 62 of the forward / reverse rotation selecting mechanism 6 for performing forward / reverse rotation of the radiator cooling fan 70. 108.
The operation wire 108 is configured by a Bowden wire including an inner wire 108a having one end connected to the grip portion 107a and an outer wire 108b through which the inner wire 108a is inserted. One end side of the outer wire 108 b is fixed to the rear wall portion of the operation cabin 15 via the mounting bracket 109. The operation wire 108 is disposed downward along the rear wall 15 f portion in the driving cabin 15, and extends to the outside of the driving cabin 15 through the rear wall 15 f of the driving cabin 15 at the lower part of the driving cabin 15. Yes.
The extended operation wire 108 passes along the lower side of the Glen tank 5 and extends along the upper frame 13C of the tank support 13 and the other end portion of the inner wire 108a at the end thereof is the forward / reverse selection mechanism 6. Is connected to the swinging end of the operating arm 62.

The operation arm 62 to which the operation wire 108 is coupled swings the swing plate 60 to operate the pair of tension wheels 63 and 64, and reversely rotates in the normal transmission state in which the normal transmission belt 56 is tensioned. It is configured to be switchable to a reverse transmission state in which the transmission belt 57 is tensioned.
That is, by gripping and pulling the grip portion 107a of the fan reverse rotation operating tool 107, the inner wire 108a operates the end portion of the operation arm 62 in the pulling direction. Along with this, the second tension ring body 64 moves to the side that tensions the reverse transmission belt 57 against the urging force of the coil spring 66, and the first tension ring body 63 relaxes the forward transmission belt 56. Move to. Therefore, as the fan reverse operation tool 107 is pulled, the forward / reverse selection mechanism 6 is in a state of operating the radiator cooling fan 70 in reverse.
When the pulling operation by the fan reverse rotation operating tool 107 is released, the end of the operating arm 62 is pulled down by the biasing force of the coil spring 66. Along with this, the second tension ring body 64 moves to the side where the reverse transmission belt 57 is relaxed, the first tension ring body 63 moves to the side where the forward transmission belt 56 is tensioned, and the radiator cooling fan 70 is moved forward. Return to the state of turning.

  The cutting unit reverse rotation operating tool 106 and the fan reverse rotation operating tool 107 are not pulled, that is, the feeder 17A of the cutting processing device 17 as the working unit is not operated in the reverse drive state. In addition, the radiator cooling fan 70 as a working unit is disposed so as to overlap with the side panel box 15c in a side view when not being operated in the reverse drive state. That is, in the forward rotation operation state where the cutting unit reverse rotation operating tool 106 and the fan reverse rotation operating tool 107 are not operated, the cutting unit reverse rotation operating tool 106 and the fan reverse rotation operating tool 107 are located on the side of the side panel box 15c. It is arranged so as to overlap with the area where the projection plane exists.

Further, the reaping unit reverse rotation operation tool 106 and the fan reverse rotation operation tool 107 are arranged side by side in the above-mentioned normal rotation operation state so as to be lined up and down in the front view and back and forth in the side view.
Then, as shown in FIG. 15, each push / pull operation direction is substantially the same pulling operation direction from the rear lower side to the front upper side toward the front upper side in the side view, and the return direction in the opposite direction. The operation is possible.

(Lever support structure)
A support structure for the threshing clutch lever 114 and the reaping clutch lever 115 provided in the side panel box 15c will be described.
As shown in FIGS. 19 to 21, a pair of left and right cylindrical bosses 122 and 123 are fitted on a single support shaft 121 attached to a support frame 120 provided inside the side panel box 15c so as to be relatively rotatable. ing.
Of the pair of left and right cylindrical bosses 122, 123, the connecting board 114 a of the threshing clutch lever 114 is welded and fixed to the right cylindrical boss 122, and the threshing clutch lever 114 can swing up and down around the support shaft 121. It is pivotally supported.
The connection board 115a of the cutting clutch lever 115 is welded and fixed to the left cylinder boss 123, and the cutting clutch lever 115 is pivotally supported so as to be swingable up and down around the support shaft 121.

  A string moon cake 114c is swingably connected to the free end side of the connecting board 114a of the threshing clutch lever 114 via a pivot pin 114b. An operation member 36c for operating the second tension wheel 36 acting on the second transmission belt 32B that transmits the power of the engine 3 to the threshing device 4 is connected to the other end portion of the string moon cake 114c. Accordingly, when the threshing clutch lever 114 is operated to the entrance side that is tilted forward as shown in FIG. 19, the second tension wheel 36 tensions the second transmission belt 32 </ b> B, and the power of the engine 3 is transmitted to the threshing device 4. When the threshing clutch lever 114 is operated to the cut side where the threshing clutch lever 114 is raised, the second tension wheel 36 relaxes the second transmission belt 32B, and the transmission of the power of the engine 3 to the threshing device 4 is cut off.

A string moon cake 115c is swingably connected to the free end side of the connection board 115a of the cutting clutch lever 115 via a pivot pin 115b. A connecting wire 115d is connected to the other end of the string moon cake 115c as an operation member for operating a cutting clutch (not shown) for intermittently transmitting power from the engine 3 to the cutting processing device 17. .
Accordingly, by operating the cutting clutch lever 115 to the entrance side which is tilted forward as shown in FIG. 19, the cutting clutch is engaged, and the power of the engine 3 is transmitted to the cutting processing device 17 so that the cutting clutch lever 115 is engaged. Is operated in the disengaged state, and the transmission of the power of the engine 3 to the harvesting processing device 17 is cut off.

[Other Embodiment 1]
In the above embodiment, the cutting unit 17 and the radiator cooling fan 70 are shown as the working unit that can be selectively switched between the normal rotation state and the reverse rotation state. However, the present invention is not limited to this. Any suitable device may be switched to the reverse state.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above embodiment, the reaping portion reverse rotation operation tool 106 and the fan reverse rotation operation tool 107 are structured so as to be operated in the reverse rotation state only during the pulling operation and to return to the normal rotation state when the pulling operation is released. Although shown, it is not limited to this. For example, although not shown, the reverse rotation state and the normal rotation state may be alternately switched each time a pulling operation is performed.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above-described embodiment, the structure in which the reaping portion reverse operation tool 106 and the fan reverse operation tool 107 are supported on the rear wall 5f of the driving cabin 15 between the driving seat 15b and the side panel box 15c is shown. However, it is not limited to this.
For example, either one or both of the cutting part reversing operation tool 106 and the fan reversing operation tool 107 is placed between the driving seat 15b and the side panel box 15c, and between the driving seat 15b and the side panel box 15c. You may make it support in any one side. Alternatively, the reaping portion reverse operation tool 106 may be supported by one of the driver seat 15b and the side panel box 15c, and the fan reverse operation tool 107 may be supported by the other.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above embodiment, the reaping portion reversing operation tool 106 and the fan reversing operation tool 107 are both configured to be operated in a reversed state by a pulling operation, but the present invention is not limited to this. For example, both the cutting unit reverse rotation operating tool 106 and the fan reverse rotation operating tool 107 may be operated in a reverse rotation state by pressing.
Or you may make it operate both the cutting part reverse rotation operation tool 106 and the fan reverse rotation operation tool 107 to a reverse rotation state by rocking | fluctuation operation. Alternatively, either one of the cutting unit reverse rotation operation tool 106 and the fan reverse rotation operation tool 107 may be operated in a reverse rotation state by pulling or pushing, and the other may be operated in a reverse rotation state by a swinging operation. .
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the above-described embodiment, the structure including the driving cabin 15 as the driving unit is illustrated. However, the present invention is not limited to this, and the driving unit is not provided with the driving cabin 15 and is simply the steering handle 15a or the driving seat. 15b and the side panel box 15c may be provided.
Other configurations may be the same as those in the above-described embodiment.

[6 of another embodiment]
In the above-described embodiment, the traveling device 2 is configured such that the front wheel 2F is configured by a non-steering wheel and the rear wheel 2R is configured by a steering wheel. However, the present invention is not limited thereto, and for example, the front wheel 2F is steered. The rear wheel 2R may be a non-steering wheel. Moreover, you may comprise both the front wheel 2F and the rear wheel 2R with a steering wheel.
Other configurations may be the same as those in the above-described embodiment.

[7 of another embodiment]
In the above embodiment, the traveling device 2 has a structure in which the front wheel 2F is a driving wheel constituted by non-steering wheels and the rear wheel 2R is constituted by steering wheels that are not driven. It is not limited.
For example, the front wheels 2F are steered wheels that are not driven, the rear wheels 2R are non-steered drive wheels, or both the front wheels 2F and the rear wheels 2R are steered wheels, The rear wheel 2R may be configured to be driven together.
Other configurations may be the same as those in the above-described embodiment.

[8 of another embodiment]
In the above embodiment, the front traveling unit is configured with the front wheel 2F including non-steering wheels, and the rear traveling unit is configured with the rear wheel 2R including steering wheels. The front traveling unit may be configured by a semi-crawler type crawler traveling device, and the rear traveling unit may be configured by a rear wheel 2R including steering wheels. Conversely, the front traveling unit may be configured by a front wheel 2F made of steered wheels, and the rear traveling unit may be configured by a semi-crawler type crawler traveling device.
In this case, the semi-crawler type crawler traveling device is driven, and the rear wheel 2R or the front wheel 2F constituted by the steering wheels may be non-driven, or the semi-crawler type crawler traveling device and the steering The rear wheel 2R or the front wheel 2F constituted by wheels may be driven together.
Other configurations may be the same as those in the above-described embodiment.

[9 of another embodiment]
In said embodiment, the thing of the structure using the output pulley 30 as an engine output rotary body, the input-output pulley 22 as an input rotary body and an output rotary body, and the threshing input pulley 41b as a threshing side rotary body was shown. However, the output or input rotating body is not limited to a pulley, and may be a sprocket, for example. In that case, a transmission chain may be used in place of the transmission belts 32A and 32B in the transmission endless rotation band. Similarly, in a transmission structure using an endless rotation band in other places such as the threshing device 4, a transmission chain may be employed instead of the transmission belt.
Other configurations may be the same as those in the above-described embodiment.

  The harvesting machine shown in the present invention is not limited to a combine that harvests grains such as rice, wheat, and corn, but can also be applied to harvesting beans such as soybeans and flower varieties such as rapeseed. Moreover, not only a normal type combine but a self-removal type combine may be sufficient.

6 second reversing mechanism 15 driving cabin 15b driving seat 15c side panel box 15f rear wall 17 or 70 working unit 106 or 107 reverse operating tool 106 first operating tool 106b gripping part 107 second operating tool 107a gripping part 111 shift operating tool

Claims (7)

A working section that can be selectively switched between a normal rotation state and a reverse rotation state;
A reversing mechanism for reversing the working part;
A reversing operation tool for manually turning on and off the reversing mechanism;
A driver seat,
A side panel box provided with a shifting operation tool on the lateral side of the driver seat,
A harvesting machine equipped with the reverse operation tool between the driver's seat and the side panel box.   The reverse operation tool is biased to a state in which the working unit is switched to the normal rotation state, and the reverse rotation operation tool biased to the normal rotation state is present in a side projection surface of the side panel box. The harvesting machine according to claim 1, wherein the harvesting machine is configured to overlap with a region to be operated. The reversing mechanism includes a first reversing mechanism for reversing a cutting unit driving system as the working unit, and a second reversing mechanism for reversing a radiator cooling fan driving system as the working unit,
The harvesting machine according to claim 1 or 2, wherein the reverse operation tool includes a first operation tool for operating the first reverse rotation mechanism and a second operation tool for operating the second reverse rotation mechanism.   The first operating tool and the second operating tool are configured so as to be capable of being pushed and pulled, and are arranged side by side in a front view, and the pulling operation directions are the same or substantially the same. The harvesting machine according to claim 3 configured as described above.   The harvesting machine according to claim 3 or 4, wherein the first operation tool and the second operation tool are arranged so as to be arranged back and forth in a side view in the normal rotation state. The first operating tool is composed of an operating rod for reversing the cutting unit drive system,
The second operation tool is composed of a wire operation tool for reversing the radiator cooling fan drive system,
The harvesting machine according to any one of claims 3 to 5, wherein the grip portion of the second operation tool is disposed at a position higher than the grip portion of the first operation tool. With driving cabin,
The first operating tool and the second operating tool are disposed inside the driving cabin,
One of the first operating tool and the second operating tool is supported by a rear wall of the driving cabin,
The harvesting machine according to any one of claims 3 to 6, wherein the other one of the first operation tool and the second operation tool is supported in a state of penetrating the lower side of the rear wall.

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