CN1973595B - combine harvester - Google Patents

Abstract

The invention can simplify the driving system of the harvesting device and reliably drive the harvesting device without special maintenance operation. A rotation conversion mechanism (70) for converting the rotation of the intermediate shaft (65) around the transverse axis into the reciprocating rotation around the axis in the front-rear direction is provided on the intermediate shaft (65), a transmission shaft (74) for transmitting the converted reciprocating rotation power extends forward, and the front end of the transmission shaft (74) is linked with the harvesting device (12).

Description

combine harvester

technical field

This invention relates to the combine harvester provided with the harvesting part provided with the clipper type harvesting device, the screw conveyor for horizontal feed, and the rake drum at the front end of the feeder connected to the front part of a threshing apparatus. the

Background technique

As a reaping part drive structure in the said combine, the structure disclosed, for example in Unexamined-Japanese-Patent No. 2005-211010 is known. That is, the power output from the intermediate shaft on the back of the harvesting section from the horizontal frame is transmitted to the harvesting knife drive box near the lateral side of the harvesting device via the transmission belt, and the harvesting knife drive box and the harvesting device are connected in linkage, and output from the intermediate shaft The power drives the screw conveyor and the raking drum. the

In the above-mentioned conventional structure, the belt transmission mechanism interlockingly connecting the intermediate shaft and the harvesting knife drive box is provided on the laterally outer side of the harvesting section. Therefore, a large number of components are required in the harvesting device drive system, resulting in high cost. In addition, due to the friction transmission via the belt, there is a possibility of transmission slippage due to wear or elongation of the belt, which reduces the cutting performance of the harvesting device. Therefore, sufficient maintenance of the belt is necessary. the

Contents of the invention

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to simplify the driving system of the reaping device and to reliably drive the reaping device without requiring special maintenance work. the

The first characteristic solution of the present invention is that a kind of combine harvester comprises:

threshing device,

A feeder connected to the front of the threshing device,

The harvesting device arranged at the front end of the feeder,

A screw conveyor for horizontal delivery arranged at the front end of the feeder,

The raking drum arranged at the front end of the feeder, the drive shaft of the feeder cross-framed at the base end of the feeder,

and cross the middle shaft at the front of the feeder,

Wherein, the power is transmitted from the feeder drive shaft to the intermediate shaft, and then, the power branch from the intermediate shaft is transmitted to the harvesting device, the screw conveyor and the drum, and it is characterized in that

The intermediate shaft is equipped with a rotation conversion mechanism, and the rotation conversion mechanism converts the rotation of the intermediate shaft around the transverse axis into reciprocating rotation around the front and rear directions,

A transmission shaft that transmits the reciprocating rotation of the rotation conversion mechanism is provided, and the transmission shaft extends forward from the rotation conversion mechanism to the vicinity of the harvesting device, and the front end of the transmission shaft reciprocates with the harvesting device The swing arm of the harvesting knife is linked,

The rotation conversion mechanism includes: a tilting head connected to the end of the intermediate shaft, and the intermediate shaft extends laterally from the rear of the harvesting part of the harvesting device in a cantilever shape; The tilting axis of the tilting head is externally embedded in a rotating manner; and a pair of fulcrum pins are arranged at diagonal positions on the outer circumference of the tilting hub, and the transmission shaft is connected to the pair of fulcrum pins via a yoke. the

According to the above scheme, by installing the swing arm on the front end of the transmission shaft that reciprocates around the axis in the front-rear direction, and linking the reciprocating swing arm with the harvesting knife of the harvesting device, it can be linked with the rotation of the intermediate shaft. The harvesting knife is reciprocally driven with a specified stroke. In this case, since there is no frictional transmission part in the transmission system for transmission from the intermediate shaft to the harvesting device, the harvesting device can be driven without slipping. the

Therefore, compared with the case of belt transmission, the transmission system for transmission from the intermediate shaft to the harvesting device can be simplified, the cost of the transmission structure can be reduced, and the reliable driving of the harvesting device can be performed without special maintenance. the

The second characteristic solution of the present invention is that the harvesting section is equipped with a screw conveyor for horizontal feeding and a raking drum, and the intermediate shaft is flexibly (wrapped) linked to the driving shaft of the screw conveyor, and, Power branched off from the drive shaft of the auger is transmitted to the raking drum. the

For example, if a structure is made to transmit the power branched from the intermediate shaft to the raking drum, three power branch parts for harvesting device driving, auger driving, and raking drum driving will be used from harvesting It is equipped on the intermediate shaft in such a way that the lateral outer side of the part protrudes. In this way, the cantilevered length of the intermediate shaft becomes longer, and a large bending load is likely to be applied, so that the shaft diameter of the intermediate shaft needs to be increased. On the other hand, according to the above proposal, only two power branch points for driving the harvesting device and driving the auger are provided on the intermediate shaft, and there is no need to lengthen the cantilever protruding length of the intermediate shaft. Therefore, the bending load applied to the intermediate shaft is reduced, and the diameter of the intermediate shaft only needs to be small enough to enable necessary torque transmission. the

The third characteristic solution of the present invention is that a belt transmission mechanism is provided in the transmission system for the transmission to the raking drum, and a transmission pulley for flexible transmission with different transmission ratios is provided in the belt transmission mechanism, through The transmission belt is changed to the transmission pulley to change the speed. the

According to the said aspect, the speed change structure of a raking drum can be comprised inexpensively. the

A fourth characteristic solution of the present invention is that the raking drum includes a bearing component and a supporting component;

The bearing member has a bearing recess opening outward in the radial direction. The bearing member is disposed on a shaft support portion that rotatably supports the top of the reel frame on the fork installation shaft. The bearing member It is positioned and supported on the reel frame via the engaging protrusion, and is fixed on the reel frame by a bolt;

The supporting member is engaged and fixed via the engaging protrusion so as to prevent the fork-teeth mounting shaft engaged in the bearing recess from coming off. the

According to the above configuration, when the reel attachment shaft is attached to the reel frame, one bolt is used for each of the left and right shaft support portions. For example, in the case of a pentagonal raking drum, only ten bolts are used to mount the five drum mounting shafts to the drum frame. Therefore, compared with the prior art in which two bolts are used for one shaft support portion, only half the number of bolts and man-hours are required. In addition, if the same shaft support structure is used for the pivotal support between the auxiliary drum frame and the free end of the rotation limiting arm, in the case of a pentagonal raking drum, a total of twenty bolts are sufficient. . the

Therefore, the tine mounting shaft integrally equipped with the rotation restricting arm can be easily attached to and detached from the drum frame with less man-hours for bolting, and reduction in the number of parts and weight can be achieved. the

The fifth characteristic solution of the present invention is that the screw conveyor includes: a screw conveyor roller with cover plates fixedly installed at both ends, a fixed support shaft, a rotating support shaft, a support bracket, an eccentric support shaft and a raking body ; With the help of the fixed fulcrum and the rotatable fulcrum, the screw conveyor roller straddles a pair of left and right side plates equipped on the left and right ends of the conveying platform and is rotatably supported by the shaft; the fixed fulcrum is connected fixed on one of the side plates, and rotatably penetrate the center of one of the cover plates; The center of one cover plate; the eccentric support shaft is connected and supported on the inner end of the drum of the fixed support shaft via a support bracket; the raking body is installed through the screw conveyor drum from the outer periphery, basically The end portion is pivotally supported on the eccentric fulcrum and performs a protrusion and retraction action from the auger roller by rotation of the auger roller; furthermore, on one of the auger rollers An assembly hole is provided on the cover plate, and the assembly hole has a shape capable of being inserted through the eccentric support shaft and the support bracket. the

According to the above scheme, first, the conveying platform and the left and right side plates are fixed on the frame of the harvesting section by means of welding, etc., and the skeleton of the harvesting section is assembled. On this basis, the screw conveyor is assembled across the left and right side plates. At this time, insert the screw conveyor roller with the fixed support shaft and the rotating support shaft removed between the left and right side plates, and then bolt the rotating support shaft inserted through the other side plate from the outside to the other side of the screw conveyor drum. on a cover. the

Connect the end of the eccentric support shaft to the fixed support shaft in a cantilever shape through the support bracket in advance, and then, pass the assembly hole formed in one side plate and the assembly hole formed in one cover plate of the screw conveyor drum, and insert the eccentric The fulcrum is inserted into the auger drum together with the support bracket. the

Then, the insertion end of the eccentric fulcrum is connected to the free end of the support arm rotatably installed on the inner end of the rotatable fulcrum, so that the eccentric fulcrum can be fixedly mounted on the rotating shaft from the drum in a state supported at both ends. At the prescribed position of eccentricity. Next, the inner side end of the raking body installed through the outer periphery of the screw conveyor drum is rotatably connected to the eccentric support shaft. The operation of connecting the eccentric support shaft to the support bracket and the operation of pivotally supporting the raking body on the eccentric support shaft are performed from an assembly hole formed freely openable and closable on the outer periphery of the screw conveyor drum. the

Therefore, on the basis of integrating the conveying table surface and the left and right side plates of the harvesting section by welding or the like, the screw conveyor can be pivotally supported and installed between the left and right side plates. Therefore, compared with the conventional method in which the screw conveyor is pivotally supported between the left and right side plates by installing one side plate behind, the assembly man-hours can be reduced, and the side plate installation strength related to the rigidity of the harvesting section is reduced. The discreteness that exists on the surface can effectively stabilize the quality. the

The sixth characteristic solution of the present invention is that the harvesting device is a clipper-type harvesting device, and a pair of movable knives on the left and right are reciprocatingly driven in opposite directions above the fixed knives;

The harvesting device has a cover; the cover extends from one of the pair of left and right movable knives to over the end of the other, and covers the upper part between the ends of the pair of left and right movable knives. the

That is, even if the space between the ends of the movable knife is opened, the upper portion between the ends can be covered by the cover, so that it is difficult for straw chips or earth to enter between the ends. Even if straw clippings or soil protrude or fly into the bottom of the cover and are carried or hooked on the fixed knife or the harvesting knife support body, they will also touch and extend from a movable knife and reciprocate together with the movable knife. The cover is in contact with the cover, so it is easily dropped by the scraping effect of the cover. the

Therefore, according to the first invention, under the condition of opening and closing between the ends of the movable knife, the covering and scraping effect realized by the cover can still be used to easily avoid stagnation or accumulation of straw scraps or soil, etc. Between these end portions, it is difficult to cause cutting failure or drive failure due to straw clippings or soil, and it is possible to perform harvesting work efficiently. the

Description of drawings

Fig. 1 is an overall left side view of the combine harvester. the

Fig. 2 is an overall top view of the combine harvester. the

Fig. 3 is an overall right side view of the combine harvester. the

Figure 4 is a diagram of the transmission system. the

Fig. 5 is a side view of a harvesting unit. the

Fig. 6 is a front view showing a part of the raking drum. the

Fig. 7 is a longitudinal sectional rear view of the rotation conversion mechanism. the

Fig. 8 is a front view of the driving structure of the harvesting knife. the

Fig. 9 is a top view of the speed change structure of the raking drum. the

Fig. 10 is a side view of the speed change structure of the raking drum. the

Fig. 11 is a side view of a harvesting unit. the

Figure 12 is a side view of the raking drum. the

Figure 13 is an exploded side view of the raking drum. the

Fig. 14 is a front view showing the right end portion of the raking drum. the

Fig. 15 is a front view showing the left end portion of the raking drum. the

Fig. 16 is a side view showing the bearing portion of the tine mounting shaft in the raking drum. the

Fig. 17 is a longitudinal sectional front view showing the bearing portion of the tine mounting shaft in the raking drum. the

Fig. 18 is an exploded perspective view showing the bearing portion of the tine attachment shaft in the raking drum. the

Fig. 19 is a side view showing the bearing portion at the end of the rotation restricting arm in the raking drum. the

Fig. 20 is an exploded perspective view showing the bearing portion at the end of the rotation regulating arm in the raking drum. the

Fig. 21 is a longitudinal sectional side view of a fork tine mounting portion. the

Fig. 22 is a longitudinal sectional left side view of the screw conveyor. the

Fig. 23 is a cross-sectional top view of the screw conveyor. the

Fig. 24 is a cross-sectional plan view showing the vicinity of the right end of the auger. the

Fig. 25 is a cross-sectional plan view showing the left half of the screw conveyor. the

Fig. 26 is a side view showing the main part of the left side panel. the

Fig. 27 is a side view showing the main part of the right side panel. the

Figure 28 is an exploded view of the auger. the

Fig. 29 is a plan view of a pusher type harvesting device for a combine. the

Fig. 30 is a plan view of a support mechanism arrangement location of the harvesting device. the

Fig. 31 is a cross-sectional view of a support mechanism arrangement location of the harvesting device. the

Fig. 32 is a top view of the working part of the harvesting knife driving mechanism of the harvesting device. the

Fig. 33 is a front view of the working part of the harvesting knife driving mechanism of the harvesting device. the

Fig. 34 is a plan view of the cover arrangement position of the harvesting device. the

Fig. 35 is a cross-sectional view of a cover arrangement position of the harvesting device. the

Fig. 36 is a sectional view of the harvesting device. the

Detailed ways

(Outline of Combine Harvester)

Fig. 1 has shown the whole side of common type combine harvester of the present invention, and Fig. 2 has shown its whole top surface. This combine harvester is equipped with an axial flow type threshing device 3 and a bagging type grain recovery part 4 side by side on the traveling body 2 equipped with a pair of left and right crawler belt traveling devices 1, and the grain recovery part 4 The front of is equipped with driving part 5. In the front part of the threshing device 3, a feeder 6 for conveying harvested straw is connected in a manner to swing freely around the fulcrum P up and down, and a feeder 6 having a harvesting width approximately equivalent to the lateral width of the machine body is connected to the front end of the feeder 6 . The harvesting section 7 is equipped with an engine 8 laterally below the driving section 5 . the

A hydraulic cylinder 9 is erected between the front part of the traveling body 2 and the lower part of the feeder 6 , and the harvesting part 7 and the feeder 6 are integrally swung up and down around the fulcrum P by the telescopic movement of the hydraulic cylinder 9 . Above the front part of the harvesting section 7 is equipped a raking drum 10 which rakes and pulls up the planted straw to the rear. the

The reaping section 7 is equipped with: a pair of left and right grain dividing frames 11, a pusher type harvesting device 12, a screw conveyor 13 that sends the harvested crops horizontally to the middle of the harvest width, and connects the left and right grain dividing frames. The lower parts of the frame 11 are conveyed to each other on the platform 14 . The feeder 6 is configured by accommodating a scooping conveyor 16 inside a cylindrical conveying box 15 penetrating front and rear. The scooping conveyor 16 is formed by connecting the conveying rods 16b horizontally across the left and right chains 16a wound longitudinally, and the straw delivered laterally by the screw conveyor 13 is scooped up and transported along the bottom surface of the transport box 15, and Put it into the front end of the threshing device 3. the

The above-mentioned screw conveyor 13 is provided with left and right screw blades 18 on the outer periphery of the screw conveyor drum 17. The screw conveyor drum 17 is driven to rotate in a certain direction from the front to the bottom. The front-end inlet of the feeder 6 feeds the harvested straw horizontally, and the above-mentioned screw conveyor 13 is equipped with protrusions and retreats along with the rotation of the drum on four positions in the circumferential direction of the drum outer peripheral part opposite to the front-end inlet. Each pair of raking fingers 19 on the left and right of the action sends the stalks harvested in a wide range horizontally along the conveying table 14 and merges to the middle of the harvesting width, and is forced to rake and supply to the feeder 6 with the raking fingers 19 front-end entrance. the

On the right side of the outer circumference of the screw conveyor drum 17, an auxiliary raking finger 20 that acts in the lateral feeding action area of the right screw blade 18 is equipped in addition, and is left along the lateral direction from the front end inlet of the feeder 6. The straw that is located in front of the screw conveyor 13 and falls on the conveying table 14 is raked by the auxiliary raking fingers 20 to the lateral feeding action area of the screw blade 18, and is driven by the lateral feeding effect of the screw blade 18. Transported to the area of action of the raking fingers 19 . the

As shown in FIG. 5 , the raking drum 10 is pivotally supported on the front part of a pair of left and right support arms 21 that can swing up and down around the base end fulcrum a via a support bracket 22 , and the support arms can be moved up and down by means of a hydraulic cylinder 23 . 21 swings up and down to change the height of the raking action of the raking reel 10, and the raking action position can be adjusted back and forth by sliding and adjusting the support bracket 22 along the support arm 21. As shown in Figures 9 and 10, the support bracket 22 is manually slidably adjusted, and by inserting the connection pin 26 into the connection hole 24 provided on the support bracket 22 and the front and rear positions of the support arm 21, the The supporting bracket 22 is fixed in the connecting hole 25 of the . the

The raking reel 10 has: the reel drive shaft 31 that is horizontally supported on the left and right support arms 21 via the support bracket 22, the regular pentagonal reel frame 32 that is connected and fixed on the left and right sides of the reel drive shaft 31, and The fork tine installation shaft 33 between the five tops of the left and right reel frame 32 in a rotatable mode horizontal support, a plurality of raking fork tines 34 that are installed side by side on the fork tine installation shaft 33, and with respect to the reel The regular pentagonal auxiliary reel frame 35 etc. which are rotatably supported around the eccentric axis c with the driving axis b of the frame 32 deviated to the rear is fixedly extended from the end of each fork-teeth mounting shaft 33 toward the rear. The ends of the restricting arms 33a are pivotally connected to the tops of the auxiliary spool frame 35, and when the spool frame 32 rotates (revolves) around the drive axis b, the auxiliary spool frame 35 is interlocked with it. With the eccentric axis c as the center, the fork-teeth mounting shafts 33 rotate synchronously with respect to the spool frame 32 in a direction opposite to the spool rotation direction. Therefore, each fork-teeth mounting shaft 33 The tines 34 of the fork always maintain a downward posture and carry out revolution movement, and play a raking effect. the

(transmission structure)

Next, the transmission structure for transmission to each part will be described. the

As shown in FIG. 4 , the power from the engine 8 is distributed to the traveling system and the working system, and the power of the traveling system is transmitted to the main transmission mechanism 41 via a tensioned main clutch 40 . The main transmission mechanism 41 is constituted by a hydraulic continuously variable transmission (HST), and forward rotation (forward) or reverse rotation (reverse) transmission power output from the main transmission mechanism 41 is input to the transmission case 42 . The power input to the transmission case 42 is shifted between high and low speeds by a gear-type auxiliary transmission mechanism 43 , and then branched to the left and right crawler belt traveling devices 1 via a pair of left and right side clutches 44 . the

The side clutch 44 is connected with the joystick 45 arranged at the front of the driving part 5. When the joystick 45 is in the left and right neutral positions, the left and right side clutches 44 are all "engaged", so as to travel in a straight line. When the control lever 45 is operated, the side clutch 44 on the operated side is “disengaged”, and only one side of the crawler 1 is driven, so that the traveling body 2 turns in the direction in which the control lever 45 is operated. The side part brake 46 is connected with the side part clutch 44, and when the control lever 45 is further brought down after the side part clutch 44 is disconnected, the side part brake 46 of the side where the side part clutch 44 is disconnected acts, thereby The crawler belt traveling device 1 whose drive has been disconnected applies the brakes, and the body turns by turning in place (steering in place). The above-mentioned joystick 45 is configured to be able to perform a cross operation front, rear, left, and right, and the joystick 45 is connected to a control valve not shown in the figure of the hydraulic cylinder 9, so that the above-mentioned hydraulic cylinder 9 performs a shortening operation by forward operation of the joystick 45, so that Harvesting section 7 descends, and hydraulic cylinder 9 carries out extension action by its backward operation, and harvesting section 7 is risen. the

The power of the working system branched from the engine power is transmitted to the input shaft of the threshing device 3 , that is, the windmill shaft 52 via the transmission belt 51 with the tensioned threshing clutch 50 acting on it. The power transmitted to the windmill shaft 52 is further branched to two systems on the left side of the machine body, and a part of the branched power is transmitted to the primary screw shaft 53 for the horizontal feeding of the primary material and the horizontal feeding of the secondary material provided by the threshing device 3 through the transmission belt 56. The secondary screw shaft 54 used for sending and the drive shaft 55 of the swinging sorting box, etc., and another part of the branch power is transmitted to the input shaft 59 of the bevel gear box 57 equipped at the front of the threshing device 3 through the transmission belt 58, and is driven by the The bevel gearbox 57 converts the directional power to drive the processing drum 60 . the

The input shaft 59 of the bevel gear box 57 and the feeder drive shaft 61 of the horizontal frame at the base end of the feeder 6 are connected in linkage through the transmission belt 63 acted by the harvesting clutch 62 of the band tension type. The power on the shaft 61 drives up the conveyor 16, the screw conveyor 13, the harvesting device 12 and the raking drum 10 as follows. the

At the back of the reaping section 7, the horizontal frame on the right side is supported with an intermediate shaft 65, and the left end of the intermediate shaft 65 and the right end of the feeder drive shaft 61 are interlockingly connected via a chain 66, and the right end of the intermediate shaft 65 protrudes to The auger drive shaft 67 on the right side of the harvesting unit 7 is interlockingly connected via a chain 68 . the

Near the right end of the intermediate shaft 65 is provided a rotation conversion mechanism 70 that converts the rotation of the intermediate shaft 65 around the lateral axis into reciprocating rotation around the front-back axis. As shown in FIG. 7 , the rotation conversion mechanism 70 is mounted on the tilt head 71 connected to the intermediate shaft 65 by externally fitting the tilt hub 72 rotatably around the tilt axis d in a manner that can rotate around the tilt axis d, and through the yoke 73 The propeller shaft 74 is connected to a pair of fulcrum pins 72 a, and the pair of fulcrum pins 72 a are provided at diagonal positions on the outer periphery of the tilt hub 72 . Through the rotation of the intermediate shaft 65 around the transverse axis, the tilt axis d of the tilt hub 72 swings forward and backward, so that the transmission linked to the tilt hub 72 via the fulcrum pin 72a and the yoke 73 The shaft 74 reciprocates at a predetermined angle. the

As shown in FIG. 5 , the transmission shaft 74 extends forward and downward along the outer surface of the right side grain dividing frame 11 , and the swing arm 75 connected to the front end of the transmission shaft 74 and the harvesting device 12 are linked and connected via a relay link 75 a. , by the reciprocating rotation of the power transmission shaft 74, the harvesting knife 12a of the harvesting device 12 is driven reciprocatingly with a certain stroke left and right. the

Equipped with the base right side of the support arm 21 of the rake drum 10, a relay shaft 81 is concentrically arranged with the base end fulcrum a of the support arm 21, and the relay shaft 81 and the screw conveyor drive shaft 67 are connected via a chain 82. The connection is interlocked, and the relay shaft 81 and the spool drive shaft 31 are interlocked and connected via the belt 83 . As shown in FIGS. 9 and 10 , a large-diameter transmission pulley 84 a and a small-diameter transmission pulley 84 b are arranged side by side on the relay shaft 81 , while a driven pulley is provided on the spool drive shaft 31 . 85, by changing the transmission belt 83 to any one of the transmission pulleys 84a, 84b, the rotation speed of the raking drum 10 can be changed in two gears, high and low. the

The setting position of the driven pulley 85 in the axial center direction is set to be equivalent to the left and right middle positions of the drive pulleys 84a, 84b equipped side by side. No matter which drive pulley 84a, 84b is selected, the drive belt 83 can be slightly twisted Status winding. the

A pair of tension rollers 87 act on the slack side path of the drive belt 83, the pair of tension rollers 87 are installed on the tension arm 86 capable of swinging around the fulcrum e in a balance-like manner by being biased by swing, and by these tension rollers 87 The curved winding of the drive belt 83 by the roller 87 can properly tension the belt regardless of the front and rear position changes of the raking drum 10 . the

(Detailed structure of the raking reel) 

Next, an example of the detailed structure of the raking drum 10 will be described with reference to FIGS. 11 to 15 . The raking drum 10 is not limited to the following structures. the

The raking reel 10 comprises: the rotating fulcrum 31 of horizontal support on the left and right described supporting brackets 22, the regular pentagon reel frame 32 that is connected and fixed on the left and right sides of this rotating fulcrum 31, the horizontal support that rotates freely The five fork teeth installation shafts 33 at the top five positions of the left and right reel frames 32, the plurality of fork teeth 34 equipped side by side on each fork teeth installation shaft 33 at a certain distance, and the drum shafts of the reel frame 32 with respect to the A regular pentagonal auxiliary reel frame 35 and the like are rotatably supported around the eccentric axis c with the center b offset rearward by a set distance L. the

As shown in FIG. 13, the reel frame 32 is composed of a disc-shaped central hub 32a, five arm portions 32b radially extending from the central hub 32a, and reinforcing rods 32c spanning the ends of the arm portions 32b. constitute. The auxiliary reel frame 35 is also made of a disc-shaped central shaft hub 35a, five arm portions 35b extending radially from the central shaft hub 35a, and reinforcing rods 35c erected on the ends of the span arm portions 35b. 32 and the auxiliary spool frame 35 have the same shape. the

As shown in FIG. 14 , a disk-shaped support plate 88 is fastened and fixed to the inner side of the body of the support bracket 22 , and on the inner surface near the outer periphery of the support plate 88 , relative to the eccentric axis c Three guide rollers 89 are provided at equal distances. On the other hand, a circular hole 90 is stamped and formed on the central shaft hub 35a of the auxiliary drum frame 35, and the diameter of the circular hole 90 is such that the circular hole 90 is circumscribed to the group of guide rollers 89. The group of guide rollers 89 guides the circular hole 90, and the auxiliary spool frame 35 is rotatably supported around the eccentric axis c. the

A rotation restricting arm 91 is integrally protruded rearward from both ends of each tine mounting shaft 33 , and a free end of the rotation restricting arm 91 is pivotally connected to each top of the auxiliary drum frame 35 . The distance from the axis r of each fork tine mounting shaft 33 to the free end pivot support point s of the rotation limiting arm 91 and the direction of the imaginary line connecting the two fulcrums r, s, and from the drum axis b to the eccentric axis c The distance L and the direction of the imaginary line connecting the two shaft centers b and c are consistent, the drum shaft center b, the eccentric shaft center c, the shaft center r of the tine mounting shaft 33 and the free end pivot of the rotation limiting arm 91 The supporting point s constitutes the fulcrum of the parallelogram. Therefore, when the spool frame 32 rotates around the spool axis b, the auxiliary spool frame 35 rotates around the eccentric axis c, whereby the tine mounting shaft 33 revolves around the spool axis b while orbiting the axis r rotates synchronously in the opposite direction, so that the fork tine installation shaft 33 maintains a certain rotation posture all the time. the

FIGS. 16 to 18 show the structure of the shaft support portion that rotatably supports the tine mounting shaft 33 on the top of the drum frame 32 . the

The arm portion 32b constituting the reel frame 32 is made of a sheet metal material. The side edge 32ba in the direction of rotation of the reel is folded and punched to form a U-shaped cross-sectional shape, and the end portion of the sheet metal material is opened radially outward. A concave portion 92 capable of engaging the tine attachment shaft 33 is formed. On both sides of the concave portion 92, a pair of receiving pieces 32d are provided opposite to each other at a distance through which the fork-tooth mounting shaft 33 can pass. Bend each other inwards. the

A bearing member 93 that rotatably supports the tine attachment shaft 33 is attached to the inner side of the distal end of the arm portion 32b. The bearing member 93 is made of a hard resin material having excellent sliding properties, and is formed in a substantially triangular shape inserted between the facing folded sides 32ba of the arm portion 32b. A bearing recess 94 is formed on the outer end surface of the bearing member 93 to open radially outward. The bearing recess 94 has a width and depth equivalent to the outer diameter of the fork installation shaft 33, and snaps and supports the fork installation shaft 33 therein. . A pair of engaging protrusions 95 protrude from the outer end surface of the bearing member 93 so as to be positioned on both sides of the bearing recess 94 , and the engaging protrusions 95 penetrate and support engaging holes 96 formed in each receiving piece 32 d from the inside. the

A plate-shaped support member 97 is provided between the outer end surface of the bearing member 93 and the receiving piece 32d. The plate-shaped support member 97 closes the opening of the bearing recess 94 and prevents the fork attachment shaft 33 from coming off the bearing recess 94. The support member 97 is formed with a support hole 98 through which the engagement protrusion 95 of the bearing member 93 is inserted, and by connecting and fixing the bearing member 93 to the arm portion 32b, it is supported by the bearing member 93 via the engagement protrusion 95 The supporting member 97 is fixed at a predetermined position. the

On the bottom side of the bearing concave portion 94 of the bearing member 93, a mounting hole 99 penetrating in the left-right direction is formed, and by screwing the bolt 100 inserted through the mounting hole 99 from the inside of the body to the arm portion 32b, the bearing can be mounted. The member 93 is positioned and fixed at a predetermined position. Annular protrusions 33 a engaged with left and right end surfaces of the bearing member 93 are provided on the outer periphery of the fork installation shaft 33 to realize positioning of the fork installation shaft 33 in the left and right directions. the

FIGS. 19 and 20 show the structure of the pivotal connection portion that rotatably supports the free end of the rotation limiting arm 91 on the top of the auxiliary spool frame 35 via the pivotal shaft 101 . This pivotal support connection part is the same as the shaft support structure which rotatably supports the tine attachment shaft 33 on the top part of the spool frame 32. As shown in FIG. the

That is, the arm portion 35b constituting the auxiliary reel frame 35 is also made of a sheet metal material. The side edge 35ba in the direction of rotation of the reel is folded and punched to form a U-shaped cross section of the sheet metal material. The square opening is formed with a recess 102 that can be snapped into the pivot support shaft 101 . On both sides of the concave portion 102, a pair of receiving pieces 35d are provided opposite to each other with a gap through which the pivot support shaft 101 can pass. bent inwards from each other. the

A bearing member 103 that rotatably supports the pivot support shaft 101 is attached to the inner side of the distal end of the arm portion 32b. The bearing member 103 is made of a hard resin material having excellent sliding properties, and is formed in a substantially triangular shape inserted between the facing folded sides 35ba of the arm portion 35b. On the outer end surface of the bearing member 103, a bearing concave portion 104 is opened radially outward. The bearing concave portion 104 has a width and a depth corresponding to the outer diameter of the pivot support shaft 101, and snaps and supports the pivot support shaft 101 therein. . A pair of engaging protrusions 105 protrude from the outer end surface of the bearing member 103 so as to be located on both sides of the bearing recess 104 , and the engaging protrusions 105 penetrate and support engaging holes 106 formed in each receiving piece 35d from the inside. the

A plate-shaped support member 107 is provided between the outer end surface of the bearing member 103 and the receiving piece 35d. The plate-shaped support member 107 blocks the opening of the bearing recess 104 to prevent the pivot support shaft 101 from coming out of the bearing recess 104. In this supporting member 107, a supporting hole 108 through which the engaging protrusion 105 of the bearing member 103 is inserted is formed, and by connecting and fixing the bearing member 103 to the arm portion 35b, the bearing member 103 is supported via the engaging protrusion 105. The supporting member 107 is fixed at a predetermined position. the

On the bottom side of the bearing recess 104 of the bearing member 103, a mounting hole 109 penetrating in the left-right direction is formed. By screwing the bolt 110 inserted through the mounting hole 109 from the inside of the body to the arm portion 35b, the bearing member can be mounted on the arm portion 35b. 103 is positioned and fixed at a predetermined position. Annular protrusions 101 a engaged with left and right end surfaces of the bearing member 103 are provided on the outer periphery of the pivot support shaft 101 to realize positioning of the auxiliary spool frame 35 in the left and right direction. the

Here, the pivot support shaft 101 fixedly arranged on the free end of the rotation limiting arm 91 has the same diameter as the fork-tooth installation shaft 33, and the pivot support connecting portion is rotatably supported on the top of the reel frame 32 by the fork-tooth installation shaft 33. The shaft supporting structures on the shaft are of the same specification, so the bearing parts 93, 103, the supporting parts 97, 107 and the bolts 100, 110 are common to each other. the

When assembling the fork installation shaft 33, first, snap the fork installation shaft 33 into the recess 92 of the reel frame 32, and then insert the support member 97 between the receiving piece 32d and the fork installation shaft 33 from the side. between. Then, the bearing member 93 is installed from the reel center side, and the engaging protrusion 95 is passed through the supporting hole 98 of the supporting member 97 and inserted in the engaging hole 96 of the receiving piece 32d, after which, the bearing member 93 is fixed by the bolt 100. The pivot support shaft 101 of the rotation limiting arm 91 is also assembled on the auxiliary reel frame 35 in the same order. In the case of disassembling the tine mounting shaft 33 for disassembly maintenance or replacement, the procedure is reversed. the

As shown in Figures 14 and 15, the fork teeth 34 are formed by bending the spring wires downward into a U-shape to form a pair of two, and are inserted from above to form on the fork-teeth installation shaft 33 penetrating up and down. Installed in the mounting hole 43. As shown in FIG. 21, the upper cross bar portion 34a of the fork 34 is bent into a shape wound around the fork tine mounting shaft 33 when viewed from the lateral side, and the upper cross bar portion 34a is strongly pressed against the fork tine mounting shaft. On the shaft 33, carry out external embedded fixed installation while making its elastic expansion deformation. The fork tine 34 can be detached by strongly pulling the fork tine 34 upward while pushing away the upper horizontal bar portion 34a. the

According to the above structure, when the reel installation shaft is attached to the reel frame, one bolt is used for each of the left and right shaft support parts. For example, in the case of a pentagonal raking reel, only ten bolts are used when installing five reels to the axial reel frame, which is different from the prior art of using two bolts at one shaft support position. In comparison, only half the number of bolts and man-hours are used. In addition, if the pivotal support between the auxiliary reel frame and the free end of the rotation limiting arm is configured as the same shaft support structure, in the case of a pentagonal raking reel, twenty pieces are used as a whole. Bolts will do. the

Therefore, the tine mounting shaft integrally equipped with the rotation restricting arm can be easily attached to and detached from the drum frame with less man-hours for bolt operations, and reduction in the number of parts and weight can be achieved. the

In addition, since the bolts are attached to the drum frame from the side, the bolts are located inside the profile of the raking drum. As a result, it becomes difficult to catch the planted straw, and threshing accompanying raking can be effectively prevented. the

In addition, as described above, the pivotal support connecting portion of the rotation limiting arm in the auxiliary drum frame positions and supports the bearing member having the bearing concave portion opened radially outward via the engaging mechanism, and a A bolt is used to fix it to the reel frame, and the supporting member is engaged and fixed via the engaging mechanism, and the supporting member prevents the rotation limiting arm locked in the bearing recess from disengaging from the opening. Therefore, when a fork tine installation shaft is supported across the drum frame and the auxiliary drum frame shaft, only four bolts are used. For example, if it is a pentagonal raking drum, it can be used as the existing Half of the technical quantity, that is, twenty bolts install five fork tines to install the shaft, thereby promoting the above-mentioned effects of the first invention. the

Since the above-mentioned bearing member and support member provided on the shaft support portion of the fork-teeth mounting shaft and the above-mentioned bearing member and support member provided on the pivot support connection portion of the rotation limiting arm are respectively constituted to the same specifications, it is facilitated. Common parts of the shaft support portion of the fork tine installation shaft and the pivot support connection portion of the rotation limiting arm are more conducive to cost reduction. the

(Detailed structure of the screw conveyor) 

Next, an example of the detailed configuration of the screw conveyor 13 will be described. The screw conveyor 13 is not limited to the following structure. the

As shown in Figures 22 and 23, the harvesting section 7 is the following frame assembly structure: the back plate 76 that constitutes the back, the conveying platform 14 that constitutes the bottom surface, the left and right pair of side plates 77 that constitute the left and right sides, etc. 78 is installed and fixed on the harvesting section frame 79 that connects corner pipes or L profiles, straddles the front end of the delivery platform 14 and is equipped with a clipper-type harvesting device 12 along the front end, and straddles the left and right side plates 77, 78 is erected with the auger conveyer 13 that the harvested crop is sent to the middle of the harvesting width horizontally. the

The feeder 6 is constituted by equipping a pick-up conveyor 16 inside a conveying box 15 formed in a rectangular cylinder shape. The up-and-up conveyor 16 is formed by connecting a pair of left and right chains 16a horizontally wound across the vertical frame to connect the conveying rods 16b. Put it into the front end of the threshing device 3. the

A hydraulic cylinder 9 is erected between the front part of the main frame 80 of the traveling body 2 and the lower part of the feeder 6, and through the telescopic movement of the hydraulic cylinder 9, the harvesting part 7 and the feeder 6 integrally swing around the above-mentioned fulcrum P. lift. A raking reel 10 is equipped above the front part of the harvesting section 7 , and the raking reel 10 rakes the planted crops to the rear and feeds them into the harvesting device 12 . the

As shown in Figures 22 and 24, the structure of the screw conveyor 13 is as follows, that is, on the outer periphery of the large-diameter screw conveyor drum 17, a pair of left and right screw blades 18 are provided, and the left and right pair of screw blades 18 play a role as Rotate forward to carry out the function of laterally feeding towards the front end of the above-mentioned feeder 6, and in the four positions in the circumferential direction, two on the left and right are provided on the front end inlet 221 facing the feeder 6. In the wide area, there is a rod-shaped raking finger 19 (an example of a raking body) protruding and retreating from the screw conveyor drum 17. In addition, an auxiliary finger 19 protruding and retreating from the screw conveyor drum 17 is provided in the middle of the right lateral feeding area. The raking finger 20 (an example of an auxiliary raking body). the

Cover plates 111 , 112 are fixedly installed near the left and right ends of the screw conveyor drum 17 , and an intermediate support plate 113 is fixedly installed inside the right part of the screw conveyor drum 17 . A rotation support shaft 114 penetrates through the respective centers of the right cover plate 112 and the middle support plate 113, and the connecting flange 114a keyed to the rotation support shaft 114 is bolted to the right cover plate 112, so that the rotation support shaft 114 is integrally connected to the center (axis center of the screw conveyor) x of the screw conveyor drum 17 . the

As shown in FIG. 24, the above-mentioned rotary support shaft 114 protruding from the right end of the screw conveyor drum 17 is rotatably supported on a bearing bracket 115 mounted on the right side plate 78 via a bearing 116, and is rotatably rotatable. It is supported in the support hole 113 a of the intermediate support plate 113 . As shown in FIG. 27 , an assembly hole 78 a having a diameter capable of passing through the connecting flange 114 a and the bearing bracket 115 is formed on the side plate 78 , and the rectangular cover plate 117 is bolted to the side plate from the outside. 78, in order to block the assembly hole 78a, the bearing bracket 115 is bolted to the cover plate 117. On the inner side of the side plate 78, a rimmed disc-shaped winding prevention plate 118 inserted into a recessed space formed at the right end of the screw conveyor drum 17 is connected and fixed to the above-mentioned cover plate 117 by co-tightening bolts. the

An input sprocket 119 is keyed to an outer end portion of the rotation support shaft 114 to receive a rotational driving force. An output sprocket 120 that transmits power to the raking drum 18 is integrally formed on the input sprocket 119 . the

As shown in FIG. 25 , on the left side plate 77 , a fixed support shaft 122 is connected and fixed concentrically with the axis x of the screw conveyor via a connecting flange 122 a , and the fixed support shaft 122 is fixed via a bearing 124 . The bearing bracket 123 is rotatably penetrated and supported, and the bearing bracket 123 is attached to the left side cover plate 111 of the screw conveyor drum 17 . As shown in FIG. 26, on the side plate 77, an assembly hole 77a whose diameter is formed so that the above-mentioned connection flange 122a and the above-mentioned bearing bracket 123 can be inserted is formed, and the rectangular cover is closed in a manner to block the assembly hole 77a. The plate 125 is bolted to the side plate 77 from the outside, and the bearing bracket 123 is bolted to the cover plate 125 . On the inner side of the side plate 77, the edged disc-shaped winding preventing plate 126 which enters into the recessed space formed at the left end of the screw conveyor drum 17 and the above-mentioned cover plate 125 are bolted and fixed by co-tightening. the

The support bracket 127 is fixed to the inner end of the fixed support shaft 122 by key connection, and on the other hand, the inner end side of the rotating support shaft 114 is loosely rotatable about the axis x of the screw conveyor via a bearing 129 . The support bracket 128 is fitted and attached. An eccentric support shaft 130 is stretched across the end portions of these left and right support brackets 127 and 128 in parallel to the axis x of the screw conveyor. The support brackets 127, 128 are fixed to a predetermined posture facing forward and downward. As shown in FIG. The axis x of the device is biased towards the lower front. the

On the eccentric support shaft 130, nine installation hubs 131 are loosely fitted corresponding to the installation positions of the raking fingers 19 and auxiliary raking fingers 20, and the raking fingers are inserted and screwed into each installation hub 131. 19 and the inboard ends of the auxiliary raking fingers 20. The raking fingers 19 and auxiliary raking fingers 20, which are rotatably mounted on the eccentric support shaft 130 via each mounting hub 131, are penetrated and supported by resin sliding bushes 132 installed at predetermined positions on the outer periphery of the screw conveyor 13. . Fitting holes 17a are formed at appropriate left and right portions of the outer periphery of the screw conveyor drum 17, and the fitting holes 17a are closed by a detachable cover 133 to which a slide bush 132 is mounted. the

The screw conveyor 13 is constituted as above, and the bracket is between the left and right side plates 77, 78. When the rotating shaft 114 is driven to rotate and the screw conveyor drum 17 is rotated forward, each rake finger 19 and the auxiliary rake The fingers 20 then rotate around the axis y of the eccentric support shaft 130. At this time, the distance between the eccentric support shaft 130 and each sliding bushing 132 changes according to the rotation phase. Correspondingly, each finger 19 and the auxiliary finger 20 It protrudes and retreats from the auger drum 17 . the

In this case, on the extension line facing forward that connects the axis x of the screw conveyor and the axis y of the eccentric support shaft 130, the protruding amount of the raking fingers becomes the maximum, and in its opposite phase, the protruding amount of the raking fingers reaches the maximum. Protrusion is minimal. Therefore, the crops sent laterally by the helical blades 18 are shoved backward by the greatly protruding raking fingers 19 and auxiliary raking fingers 20, and are transported rearward along the conveying table 14 in such a way as to sneak under the screw conveyor drum 17. , and sent to the front inlet 221 of the feeder 6. the

Next, the procedure for assembling the above-mentioned screw conveyor 13 across the space between the left and right side plates 77 and 12 will be described. the

When assembling, the connection flange 114a is key-connected to the rotation support shaft 114 in advance. On the other hand, a bearing bracket 123 is attached to the fixed spindle 122 via a bearing 124 , and a support bracket 127 is key-connected. Then, the left end of the eccentric supporting shaft 130 on which the mounting shaft hub 131 is installed is connected and fixed to the free end of the supporting bracket 127, and at the right end of the eccentric supporting shaft 130, the supporting bracket on which the bearing 129 is installed is connected. 128. the

The auger drum 17 is inserted between the left and right side plates 77 , 12 with the anti-winding plates 118 , 39 temporarily assembled and inserted into the recessed spaces at the left and right ends of the auger drum 17 . the

Then, the pre-assembled rotating shaft 114 is inserted into the screw conveyor drum 17 through the assembly hole 78a of the side plate 78 as described above, and inserted into the support hole of the cover plate 112 on the right side and the middle support plate 113. 113a. Then, a tool such as a socket wrench is inserted through the assembly hole 78 a to fasten the fastening flange 114 a to the cover plate 112 with bolts. Then, the bearing bracket 115 on which the cover plate 117 has been installed in advance is installed externally on the rotating shaft 114 via the bearing 116, and the cover plate 117 is bolted to the side plate 78 from the outside to block the assembly hole 78a. In addition, when the cover plate 117 is bolted to the side plate 78 , the winding preventing plate 118 is fastened to the side plate 78 altogether. Thereafter, the input sprocket 119 and the output sprocket 120 are attached to the protrusions of the rotation spindle 114 . the

Next, the fixed spindle 122 previously assembled with the eccentric spindle 130 and the support brackets 127 , 128 is inserted into the screw conveyor drum 17 through the assembly hole 77 a of the left side plate 77 as described above. At this time, since the assembly hole 111a having a shape capable of inserting the support brackets 127, 128 is formed on the left cover plate 111, the support brackets 127, 128 and the eccentric support shaft are inserted through the assembly hole 111a. 130 is inserted between the cover plate 111 and the intermediate support plate 113 . the

Next, a tool such as a box wrench is inserted from the assembly hole 77a, and the bearing bracket 123 is bolted to the cover plate 111. After that, the cover plate 125 is installed on the connecting flange 122a, and the cover plate 125 is bolted to the side from the outside. plate 77, thereby fixing the fixed shaft 122 to the side plate 77, and closing the assembly hole 78a. In addition, when the cover plate 125 is bolted to the side plate 77, the winding prevention plate 126 is fastened to the side plate 77 altogether. the

The support bracket 128 connected to the right end of the eccentric support shaft 130 is loosely fitted to the inner end portion of the rotary support shaft 114 via a bearing 129 . This assembly operation is carried out via the assembly hole on the right side of the auger drum 17 . the

Then, tools are inserted from the opened assembly holes, and the inner ends of the raking fingers 19 and the auxiliary raking fingers 20 are inserted and connected to the mounting hub 131 fitted on the eccentric support shaft 130 . Thereafter, with the raking fingers 19 and the auxiliary raking fingers 20 inserted into the slide bushes 132, the respective covers 133 are connected to the auger drum 17 to close the respective assembly holes. the

Through the above operations, the assembly of the screw conveyor drum 17 is completed. the

(Detailed structure of the harvesting device) 

Next, an example of the detailed structure of the harvesting apparatus 12 is demonstrated based on drawing. However, the detailed structure of the harvesting apparatus 12 is not limited to the following aspect. the

As shown in FIG. 29, the clipper type harvesting device 12 is constituted by arranging a fixed knife 202 and a movable knife 206, wherein the fixed knife 202 is supported on a plurality of grasses arranged at predetermined intervals along the lateral direction of the body. At the base of the frame 11 , the movable knife 206 is disposed above the left side and the right side of the fixed knife 202 . the

The clipper type harvesting device 12 is equipped in the pre-harvesting processing part of the combine harvester, and harvests the planting straws that are introduced into the grass dividing frames from the grass dividing parts 200 arranged on the end sides of the grass dividing frames 11. , its detailed structure is as follows, wherein, the combine harvester harvests rice straw, wheat and other planting straws, and performs threshing treatment, and recycles the detached grains into the threshing box for storage, or recycles them into bagged storage Bags are carried out in the warehouse. the

As shown in Figures 29, 30, 31, etc., the fixed knife 202 is equipped with a fixed knife stand 203 and a plurality of fixed blades 205, and the fixed knife stand 203 is installed on the harvesting knife connected to the base of each grass-distributing frame 11. On the support body 201 (refer to FIG. 36 ), a plurality of fixed blades 205 are arranged on the upper surface side of the front edge portion of the fixed blade stand 203 along the machine body transverse direction, and are fixedly installed by rivets 204 . the

As shown in Figures 29, 30, 31, etc., each of the movable blades 206 is provided with a plurality of movable blades 207 and a knife bar 209, and the plurality of movable blades 207 are aligned with the fixed blades 205 of the fixed blade 202. The arrangement intervals with the same length are arranged laterally along the body, and the one cutter bar 209 is fixedly installed on the upper surface side of each movable blade 207 by a rivet 208, and a plurality of movable blades 207 are connected together. the

The three positions of the two ends and the middle part of each movable knife 206 are acted on by supporting mechanisms 215A and 215C provided with knife holders 216, and each movable knife 206 slides laterally along the machine body via the supporting mechanisms 215A and 215C. It is freely supported on the fixed knife 202 . The movable knife 206 on the left side is reciprocatingly driven by the cutting knife drive mechanism 221 acting on the following movable knife operating body 210 relative to the left side part of the fixed knife 202 in the state of reciprocating sliding along the lateral direction of the body. The movable knife operating body 210 is provided in the vicinity of the position where the support mechanism 215A, which is the outermost in the lateral direction of the body, acts among the plurality of support mechanisms 215A, 215C of the movable knife 206 . The movable knife 206 on the right side is reciprocatingly driven by the harvesting knife drive mechanism 221 acting on the following movable knife operating body 210 relative to the right side part of the fixed knife 202 in a state of reciprocating sliding along the lateral direction of the body. The movable knife operating body 210 is provided in the vicinity of the position where the support mechanism 215A, which is the outermost in the lateral direction of the body, acts among the plurality of support mechanisms 215A, 215C of the movable knife 206 . the

As shown in Fig. 29,32,33, described each harvesting knife driving mechanism 221 has swing link 230, link bar 231 and drive rotating body 223; Wherein, swing link 230 is provided with operating roller 222 at one end, so The operation roller 222 is composed of a bearing that is engaged between the pair of left and right operation plates 211 of the above-mentioned movable knife operating body 210 of the movable knife 206 to be driven; On the end portion of the other end side of the connecting rod 230; the driving rotating body 223 is relatively rotatably connected with the other end side of the linkage rod 231 at the peripheral portion. the

The middle part of the said swing link 230 is rotatably connected to the support shaft 232 with which the straw conveying apparatus (not shown) was equipped, and the swing link 230 reciprocates around the axis center of the said support shaft 232. The above-mentioned driving rotating body 223 is rotatably supported by the end part of the transmission case 226 which comprises the frame of the pre-harvesting processing part via the rotation support shaft 224. As shown in FIG. the

Thus, each harvesting knife driving mechanism 221 converts the rotational driving force of the driving rotating body 223 driven around the body up-and-down direction axis center of the rotating shaft 224 into linear reciprocating power by the linkage rod 43, and transmits it to the swing link 230. At the end, the swing link 230 is driven to swing back and forth at a certain swing angle around the vertical axis of the support shaft 232, and the reciprocating power of the swing link 230 is transmitted to the movable knife operating body 210 by means of the operating roller 222. , thereby reciprocatingly driving the movable knife 10 . the

A pair of harvesting knife driving mechanism 221 drives the left and right movable knife 206 reciprocatingly in the following state according to the setting etc. of the rotational phase of its driving rotating body 223: when the movable knife 206 on the left side slides toward the body outside, the right side The movable knife 206 also slides to the outside of the body. When the movable knife 206 on the left side slides towards the inside of the body, the movable knife 206 on the right side also slides towards the inside of the body. direction to slide back and forth. the

That is to say, the pusher type harvesting device 12 is in a state where the left and right pair of movable knives 206 reciprocate in opposite directions above the fixed knife 202 , and between the ends of the left and right pair of movable knives 206 In the state of opening and closing above the harvesting knife support body 201 provided by the grass dividing frame 11 at the transverse center of the body, a pair of left and right movable knives 206 are driven reciprocatingly by a pair of harvesting drive mechanisms 221, thereby by virtue of being positioned on the left side of the fixed knives 202 The fixed blade 205 of the side part and the movable blade 207 of the left side movable knife 206 relatively moving relative to the fixed blade 205 carry out the harvesting process on the planting straws from the multiple grain dividing pieces 200 located on the left side of the harvesting section, And, by the fixed blade 205 that is positioned at fixed knife 202 right sides part and the movable blade 207 of the right side movable knife 206 that relatively moves with respect to this fixed blade 205, to the harvesting section right side from a plurality of dividing crop parts 200 The planted straw is harvested. the

34 and 35, the cover 227 is extended from the end of one movable knife 206 in the left and right pair of movable knives 206 to the top of the other movable knife 206, and the cover The cover 227 has a sufficient extension length to cover between the ends S of the left and right pair of movable knives 206, and even when the two movable knives 206 reciprocate in opposite directions, the ends are opened to the maximum. The state of the dimensions is also sufficient to cover the entire range between the ends. the

Thus, by means of the cover 227, straw chips or earth etc. are prevented from entering between the ends S of the left and right movable knives 206, and even if straw chips or earth etc. protrude or fly into between the ends and are hooked On the harvesting knife supporting body 201 below between fixed knife 202 or end, also can contact with the cover cover 227 that moves back and forth together with movable knife 206, is subjected to the scraping action of cover cover 227 and becomes easy to fall, like this for harvesting. the

As shown in Figures 30 and 31, the above-mentioned supporting mechanism 215A that supports the laterally outer end of each movable knife 206 has a rear sliding guide body 218, which is fixed on the above-mentioned fixed knife table 203 by a connecting bolt 217; The above-mentioned knife holder 216 made of spring plate, the rear end is fixed on the fixed knife table 203 together with the above-mentioned rear sliding guide body 218 through the above-mentioned connecting bolt 217; front end. A member made of a material different from the knife bar 209 is connected to the knife bar 209 of the movable knife 206 by the above-mentioned rivet 208, so that the knife bar 209 has a sliding part having a hardness and wear resistance superior to that of the knife bar 209. The support mechanism 215A clamps the above-mentioned sliding part of the knife rod 209 by means of the above-mentioned front sliding guide body 220 and the rear sliding guide body 218, so that it can slide freely, so that the movable knife 206 can slide relative to the fixed knife 202 along the lateral direction of the body. way to support. the

As shown in Figures 33, 34, and 35, the above-mentioned support mechanism 215C that supports the body inner end portion of the above-mentioned movable knife 206 to which the above-mentioned cover 227 is connected has a rear sliding guide body 218 fixed by a connecting bolt 217. On the above-mentioned fixed knife table 203; the above-mentioned tool holder 216 made of spring plate, the rear end is fixed on the fixed knife table 203 together with the above-mentioned rear sliding guide body 218 through the above-mentioned connecting bolt 217; the front sliding guide body 220 is fixed by a rivet 219 is connected to the front end of the tool holder 216 . On the mounting portion 228 of the cover 227 that is connected to the movable knife 206 by the rivet 208, it slides on the rear slide guide 218 or the front slide guide 220 of the support mechanism 215C of the fixed knife 202. In a manner, a rear side sliding contact portion 229a and a front side sliding contact portion 229b are provided, and the rear side sliding contact portion 229a is disposed between the knife rod 209 of the movable knife 206 and the rear sliding guide body 218; the front side sliding contact portion 229b is arranged between the knife bar 209 of the movable knife 206 and the front slide guide body 220 . The mounting portion 228 of the cover 227 is made of a material different from that of the blade 209 , and the rear sliding contact portion 229 a and the front sliding contact portion 229 b have hardness and wear resistance superior to those of the blade 209 . the

As shown in Figure 32, on the above-mentioned pair of left and right operation plates 211 of the above-mentioned movable knife operating body 210 equipped with the movable knife 206, a driven plate 212 is detachably attached by means of a connecting bolt 213, thereby forming a The contact surface 214 on which the operation roller 222 of the swing link 230 abuts. Accordingly, when the contact surface 214 is worn, it can be dealt with only by replacing the driven plate 212 without replacing the movable knife 206 and the movable knife operating body 210 . the

As mentioned above, on the installation part of the cover that is connected with the above-mentioned one movable knife, there is provided a sliding contact part, and the said sliding contact part is located between the knife bar provided by the above-mentioned one movable knife and the knife bar provided by the above-mentioned fixed knife. between the sliding guides and slide on the above sliding guides. That is, as the movable knife is reciprocated, the mounting portion of the cover slides relative to the sliding guide body at the sliding contact portion, whereby the movable knife can be reciprocated while suppressing the loosening of the movable knife relative to the fixed knife. sports. the

Therefore, the movement of the movable knife can be reduced and quiet driving can be performed, and the use of the cover as a sliding contact member is advantageous both in terms of structure and economy. the

In addition, the clipper type harvesting apparatus 12 of this invention is not limited to a combine, It is applicable also to the clipper type harvesting apparatus 12 equipped in the various harvesters other than a combine. the

[Other embodiments]

(1) In the raking drum driving structure, it may be configured such that the driven pulley 85 is pin-coupled to the drum drive shaft 31 so that the position can be changed corresponding to the axial position of the driving pulleys 84a, 84b. On the top, the transmission belt 83 is wound in a non-twisted state. the

(2) A pair of driven pulleys 85 facing the drive pulleys 84 a and 84 b may be mounted in parallel on the spool drive shaft 31 , and the drive belt 83 may be wound around without twisting. the

(3) In the structure of the above-mentioned screw conveyor, it can also be implemented in such a manner that the above-mentioned engagement protrusion 95 (105) is protruded on the inner surface of the receiving piece 32d (35d), and the The hole in which the engaging protrusion 95 (105) engages is formed on the outer end surface of the bearing member 93 (103), so that the bearing member 93 (103) and the support member 97 (107) are engaged in the engaging position fixed on the reel frame side. on the protrusion 95 (105). the

(4) The shape of the above-mentioned paired bearing member 93 (103) and support member 97 (107) is not limited to the above-mentioned embodiment, for example, it may also be joined up and down on the joint surface passing through the shaft center of the fork-tooth installation shaft 33. the

(5) In the above-mentioned embodiment, the bearing members 93, 103 and the supporting members 97, 107 are made common by setting the fork-teeth mounting shaft 33 and the pivot support shaft 101 of the rotation restricting arm 91 to have the same diameter, However, the tine mounting shaft 33 and the pivot support shaft 101 can also be designed with different diameters for implementation. the

(6) In each of the above-mentioned embodiments, an ordinary combine was described as an example, but a half-feed combine may also be used. the

Claims (6)

1. combine comprises:

Sheller unit,

Be connected in the front portion of described sheller unit feeder,

Be arranged on the front end of described feeder reaping apparatus,

Be arranged on the front end of described feeder the auger conveyor of laterally giving usefulness,

The rake that is arranged on the front end of described feeder hold together reel, crossbearer the feeder driving shaft of the base end part of described feeder,

And crossbearer is at the jackshaft of the front portion of described feeder,

Wherein, power is delivered to described jackshaft from the feeder driving shaft, and then, be delivered to reaping apparatus, auger conveyor and rake from the power branch of this jackshaft and hold together reel, it is characterized in that,

Be equipped with rotation switching mechanism on described jackshaft, described rotation switching mechanism is converted to reciprocal rotation around fore-and-aft direction with the rotation around horizontal axle center of described jackshaft,

Be provided with the power transmission shaft of the reciprocal rotation of transmitting described rotation switching mechanism, described power transmission shaft from described rotation switching mechanism towards the place ahead extend to described reaping apparatus near, the leading section of described power transmission shaft links with the swing arm interlock of the cropping knife that back and forth drives described reaping apparatus

Described rotation switching mechanism possesses: tilt head, be attached on the end of described jackshaft, described jackshaft from the back of the reaping part of described reaping apparatus to lateral outer side with cantilever-shaped extension; The inclination propeller boss is with can embedding outside the mode that rotate in the inclination axle center of this tilt head; And a pair of fulcrum pin, being arranged on the periphery diagonal position of this inclination propeller boss, described power transmission shaft is attached on the described a pair of fulcrum pin via york piece.

2. combine as claimed in claim 1, it is characterized in that, be equipped with auger conveyor and the rake of laterally giving usefulness to hold together reel at described reaping part, the flexible interlock of described jackshaft and auger conveyor driving shaft links, and the power that branches out from described auger conveyor driving shaft is passed to described rake and holds together reel.

3. combine as claimed in claim 2, it is characterized in that, in the transmission system of holding together the reel transmission to described rake, be provided with tape handler, and, in this tape handler, be provided with the drive pulley of the flexible transmission of carrying out different drive ratios, hang to changing of drive pulley by driving-belt and carry out speed change.

4. combine as claimed in claim 2 is characterized in that, described cake holds together reel and comprises parts of bearings and support unit;

Described parts of bearings has towards the bearing recess of foreign side's opening radially, described parts of bearings is configured in a support, described axle support rotates the top of reel framework and is supported on the prong installation shaft freely, described parts of bearings via the engaging protrusion positioning support on described reel framework, and, be bolted on the described reel framework by one;

Described support unit is stuck fixing via described engaging protrusion, so that stop the prong installation shaft that is entrapped in the described bearing recess to break away from.

5. combine as claimed in claim 2 is characterized in that, described auger conveyor comprises: the auger conveyor cylinder, a fixed pivot axis, rotation fulcrum, frame support bracket, eccentric fulcrum and the rake that are installed with cover plate at both ends hold together body;

By described a fixed pivot axis and described rotation fulcrum, described auger conveyor cylinder is striden and upright established the pair of right and left side plate that is provided to both ends, the runout table left and right sides and be rotated ground axle suspension freely;

Described a fixed pivot axis links and is fixed on the described side plate, and, connect the center of a described cover plate in the mode that can rotate;

The rotation of described rotation fulcrum connects freely and is bearing on another described side plate, and, be fixedly linked on the center of another described cover plate;

Described eccentric fulcrum is bearing on the cylinder medial end of described a fixed pivot axis via the frame support bracket binding;

Described rake holds together body and connects from periphery and be installed on described auger conveyor cylinder, the base end part pivot suspension on described eccentric fulcrum, and, give prominence to from described auger conveyor cylinder by the rotation of described auger conveyor cylinder and to keep out of the way action;

And then, on a described cover plate of described auger conveyor cylinder, offering assembly hole, this assembly hole has the shape that can insert logical described eccentric fulcrum and described frame support bracket.

6. combine as claimed in claim 1 is characterized in that, described reaping apparatus is the reaping apparatus of hairclipper type, but its pair of right and left moving knife is back and forth driven by opposite towards each other direction above dead knife;

Described reaping apparatus has housing;

But this housing from the described moving knife of pair of right and left extends to another top, end, but covers the top between the end of the described moving knife of pair of right and left.

Images