JP2013233108A - Ordinary-type combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent contact between a raking reel and the distal end part of a discharge auger with rising of a reaping part and/or the raking reel.SOLUTION: A raking reel 4 is provided above a reaping part 21 disposed on the front of a vehicle, and a discharge auger 16 is disposed on the upper part of the vehicle. The reaping part 21 is installed on a machine body frame 3 through a reaping part lift cylinder 18 constituting a reaping part lifting device, and the reaping part is provided to be liftable and lowerable by the reaping part lift cylinder 18. The raking reel 4 is constructed between right and left raking reel lift arms mounted to a reaping frame through a raking reel lift cylinder, and provided to be freely liftable and lowerable by the raking reel lift cylinder. The reaping part lifting device and/or a raking reel lifting device is provided with a detector for detecting the amount of lifting of the reaping part 21 and/or the raking reel 4, and a raking reel lift control mechanism is provided to control the lifting of the reaping part 21 and/or the raking reel 4 when the reaping part 21 and/or the raking reel 4 exceeds a predetermined rise value according to the detection information of the detector.

Description

The present invention relates to a conventional combine, and more particularly to a cutting section lifting cylinder and / or
Alternatively, the pick-up reel raising / lowering cylinder is provided with a detector for detecting the amount of raising / lowering of the cutting part and / or the picking reel, and the cutting part and / or the picking reel has a predetermined increase value based on the detection information of the detector. If it exceeds, it will be related with the normal combine which provided the picking reel raising / lowering control mechanism which controls raising / lowering of a cutting part and / or a picking reel.

The conventional ordinary combine is provided with a scraping reel above the cutting part disposed in the front part of the vehicle,
A discharge auger is arranged at the top of the vehicle, and the cutting part is installed on a cutting frame with a cylinder connection frame having a cutting part lifting cylinder. There are some which are installed between the left and right picking reel lifting arms attached to the cutting frame via the picking reel lifting cylinder and are provided so as to be movable up and down by the picking reel lifting cylinder (for example, Patent Documents 1 to 3).

JP-A-1-3200917 JP 2007-195557 A JP 2011-172507 A

However, in order to meet the need for improved harvesting efficiency in the above general combine, the lower position of the tip of the discharge auger that is locked in the auger rest and stowed when the entire width of the harvesting part is expanded in the vehicle lateral direction. By extending the mowing part until the mowing part and / or the take-up reel is raised according to the work situation, the take-up reel comes into contact with the tip of the discharge auger and both are damaged. There was a problem that caused problems such as Therefore, it is conceivable to change the height of the discharge auger storage position. However, since the storage position cannot be increased due to the safety standard related to the vehicle height, the present invention has been reached to solve the above-described problem.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an ordinary combine with improved safety that can prevent contact between the scraping reel and the tip of the discharge auger as the cutting portion and / or the scraping reel rises. To do.

Therefore, according to the first aspect of the present invention, a scraping reel is provided above the cutting part disposed in the front part of the vehicle, a discharge auger is provided in the upper part of the vehicle, and the cutting part is raised and lowered by the cutting part. It is installed in the machine frame via a cutting part lifting cylinder constituting the device, and is provided so as to be movable up and down by the cutting part lifting cylinder, and the scraping reel is a scraping that constitutes a scraping reel lifting device on the cutting frame. In a normal combine that is installed between right and left pick-up reel lifting arms attached via a reel lifting cylinder and can be moved up and down by the scraping reel lifting cylinder, the reaping device lifting device and / or the scraping reel lifting device Is provided with a detector for detecting the amount of lifting of the reaping portion and / or the take-up reel, and based on the detection information of the detector, the reaping portion and Or the the scraping reel exceeds a predetermined rise value, characterized in that a scraping reel lifting control mechanism for controlling the elevation of the reaper and / or the scraping reel.

  According to a second aspect of the present invention, in the ordinary combine according to the first aspect of the invention, the detector is a pivot point of each of the cutting unit lifting cylinder and / or the take-up reel lifting arm or the cutting unit lifting. It is a potentiometer installed in the cylinder and / or the take-up reel lifting cylinder.

  According to a third aspect of the present invention, in the ordinary combine according to the first aspect, the pick-up reel raising / lowering control mechanism raises or stops the pick-up reel or forcibly lowers the pick-up reel.

According to the first aspect of the present invention, the take-up reel is provided above the cutting part disposed in the front part of the vehicle, the discharge auger is provided in the upper part of the vehicle, and the cutting part constitutes the cutting part lifting device. It is installed on the fuselage frame via the cutting part lifting cylinder, and is provided so that it can be moved up and down freely by the cutting part lifting cylinder, and the scraping reel is connected to the cutting frame via a scraping reel lifting cylinder that constitutes a scraping reel lifting device. In a normal combine that is installed between the attached left and right pick-up reel lifting arms and can be moved up and down by a pick-up reel lifting cylinder, the cutting-lifting device and / or the pick-up reel lifting device includes a cutting portion and / or scraping device. A detector for detecting the raising and lowering amount of the take-in reel is provided, and when the cutting part and / or the take-up reel exceeds a predetermined rising value based on the detection information of the detector, the And / or a scraping reel lifting / lowering control mechanism for controlling the lifting / lowering of the scraping reel, so that when the cutting part and / or the scraping reel is raised beyond a predetermined height, Stop the raising of the cutting part or the take-up reel so that it does not come into contact with the tip of the discharge auger that is locked to the auger rest, or by forcibly lowering only the take-up reel, avoiding contact between the two, damage, etc. Can be prevented. Therefore, it is possible to provide a normal combine with improved safety.

  According to the second aspect of the present invention, the detector is a potentiometer installed on the rotation fulcrum of each of the cutting unit elevating cylinder and / or the take-up reel elevating arm or on the cutting unit elevating cylinder and / or the take-up reel elevating cylinder. Therefore, the detector can be easily installed, and the space for installing the detector can be saved, and the height of the cutting portion or the take-up reel can be accurately detected. Therefore, it is possible to provide a normal combine that improves safety and productivity.

  According to the invention described in claim 3, the take-up reel raising / lowering control mechanism raises, stops, or forcibly lowers the take-up reel, so that the take-up reel is connected to the leading end portion of the discharge auger that is locked to the auger rest. By stopping the raising of the cutting part or the take-up reel so as not to contact, or by forcibly lowering only the take-up reel, the contact between the two can be avoided, and damage or the like can be prevented. Therefore, it is possible to provide a normal combine with improved safety.

It is a left view of the normal type combine as an example of the present invention. It is a top view of the combine. It is an enlarged side view of the cutting part which has the working position in the combine. It is a top view of a grain feeder. It is a partial cross section top view of an upper conveyance case. It is an expansion perspective view near the cutting part raising / lowering cylinder which installed the detector. It is a control block diagram of the take-up reel raising / lowering control mechanism by a cutting part raising / lowering cylinder. It is a control flow figure of a pick-up reel raising / lowering control mechanism which stops the cutting part which reached predetermined height at a stop position. It is a side view of a vehicle at the time of stopping the cutting part which reached predetermined height at a stop position. It is an expansion perspective view of the rotation part vicinity of the cutting part raising / lowering cylinder which shows the example of installation of a detector. It is an expansion perspective view of the cutting part which shows the pick-up reel raising / lowering cylinder which installed the detector. It is a control block diagram of a take-up reel raising / lowering control mechanism by a take-up reel raising / lowering cylinder. It is a control flow figure of the picking reel raising / lowering control mechanism which stops the picking reel which reached predetermined | prescribed height in a stop position. It is a side view of a vehicle at the time of stopping the pick-up reel which reached predetermined height at a stop position. It is an expansion perspective view of the vicinity of the take-up reel raising / lowering arm which shows the example of installation of a detector. It is an enlarged side view of the cutting part which shows an example of an alarm means.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of an ordinary combine as an example of the present invention, FIG. 2 is a plan view of the combine, FIG. 3 is an enlarged side view of a cutting part at a working position in the combine, and FIG. FIG. 5 is a partial sectional plan view of the upper transport case.

  In the ordinary combine 1 of this example, as shown in FIGS. 1 and 2, for example, a body frame 3 is placed on an upper part of a crawler type traveling device 2 provided at the lower part of the body. The cabin 6 is installed above a transmission case and an engine room (not shown) arranged at the front part of the machine body frame 3, and a cutting part 21 is arranged at the front end part of the machine body.

  Further, from the center to the rear of the machine body frame 3, a sorting device made of not-shown tang, chaff sheave, cereal board, etc. is arranged, and above this sorting device, a threshing made of a crimp net or a screw rotor is arranged. A device 5 is arranged. Further, a Glen tank 15 is disposed at the rear of the cabin 6, and a discharge auger 16 projects from the upper side of the Glen tank 15.

  A feeder house 17 containing a feeder conveyor (not shown) is connected to the front end of the screw rotor. The feeder house 17 includes a hydraulic mowing unit elevating cylinder 18 interposed between a front end of a cylinder connecting frame 44 attached to a machine body frame 3 described later as a mowing unit elevating device via a rotation fulcrum 43. By moving up and down, the entire cutting unit 21 can be moved up and down in the vertical direction of the machine body.

  Further, as shown in FIG. 3, a platform 19 protrudes from the front portion of the feeder house 17, and a transverse auger 20 is provided horizontally in the platform 19. A cutting portion 21 with a weed plate 7 projecting is horizontally provided. In addition, the harvesting part 21 is provided with a scooping reel 4 for scrambling a harvested product such as cereal straw that has been weeded by the weeding board 7 backward.

  The take-up reel 4 is attached to the cutting frame 8 via an advancing / retreating / lowering mechanism, and this advancing / retreating / elevating mechanism has an intermediate portion of the pair of left and right advancing / retreating lever bodies 9 directed to the cutting frame 8 in the horizontal direction The advance / retreat lever body 9 is pivotally supported by the pivot 10 so that the advance / retreat lever body 9 can be rotated back and forth around the pivot 10, and the advance / retreat cylinder 11 is interposed between the lower end of each advance / retreat lever body 9 and the cutting frame 8. As the take-up reel lifting device, the base ends of the pair of left and right lifting arms 12 are pivotally supported on the upper end of each advancing / retracting lever body 9 by the pivoting pins 13 having the axis line in the left-right direction. A hydraulic take-up reel lifting cylinder 14 is interposed between the middle part of each lifting arm 12 and the cutting frame 8.

  In this way, the take-up reel 4 can be moved forward and backward in the vehicle front-rear direction by extending and retracting the advancing / retracting cylinder 11, and moved up and down in the vehicle up-down direction by operating the take-up reel lifting cylinder 14 to extend and retract. Can be adjusted, and the take-up reel 4 can be arranged at the take-up position adapted to the fallen state and the growing state of the cereal.

  The cutting part 21 is provided with a cutting blade 22 at the lower part, and above this cutting blade 22, a grain culm transporting device 23 having a transporting case 24 that scrapes and transports crops such as soybeans to the lateral feed auger 20 side. Is provided.

  As shown in FIGS. 4 to 5, the transport case 24 has an endless shape and a height between a drive pulley p <b> 1 located at the front and an idler pulley p <b> 2 located at the rear ( A (wide) corn straw conveyor belt b is wound, and a plurality of tines 31 for raising the corn straw are attached to the conveyor belt b at equal intervals.

  As shown in FIG. 5, an endless and high-width (wide) conveying chain 30 is provided between the lower sprockets 26 and 27 located at the front and the upper sprocket 28 located at the rear. The plurality of tines 31 may be attached to the transport chain 30 at equal intervals. Reference numeral 32 denotes a drive sprocket, reference numeral 33 denotes a transmission sprocket, and reference numeral 34 denotes a drive chain.

  And between each of these left-right paired conveyance cases 24, the grain path | route 40 is provided, and the tine 31 with the conveyance belt b along this conveyance path | route 40 is made to the rear part direction from the front part of the conveyance case 24. Furthermore, it is set as the structure made to rotate by a well-known technique from the motive power of an engine.

  Therefore, the harvested product harvested by the cutting blade 22 in the harvesting unit 21 is transported to the platform 19 in the transport path 40 while being sandwiched between the tines 31 of the transport case 24 for each group in the crop feeding device 23. From this platform 19, it is further conveyed and processed by the threshing device 5 at the rear of the machine body.

  Here, the relationship between the installation position of the cutting part 21 and the discharge auger 16 will be described. The non-work that does not discharge the grain in the grain tank directly above the scraping reel 4 attached to the upper part of the cutting part 21. In the state, a tip portion including the discharge port of the discharge auger 16 locked to the auger rest is disposed. Conventionally, the entire cutting part 21 is moved by the cutting part lifting cylinder 18 according to the work situation such as the cutting work. When the raising reel 4 is raised by the raising or raising reel raising / lowering cylinder 14, the upper end portion of the raising reel 4 interferes with the lower end portion of the leading end of the discharge auger 16, and both may be damaged. .

  Then, the detail is demonstrated about the pick-up reel raising / lowering control mechanism of this invention which solved the said problem. FIG. 6 is an enlarged perspective view of the vicinity of the cutting unit lifting cylinder where the detector is installed, FIG. 7 is a control block diagram of the take-up reel lifting control mechanism by the cutting unit lifting cylinder, and FIG. 8 shows the cutting unit that has reached a predetermined height. FIG. 9 is a side view of the vehicle when the cutting portion that has reached a predetermined height is stopped at the stop position, and FIG. It is an expansion perspective view of the rotation part vicinity of the cutting part raising / lowering cylinder which shows the example of installation.

  In the harvesting portion 21 of the combine 1 of the present invention, a take-up reel lifting / lowering control mechanism 41 is installed. As shown in FIGS. 6 to 7, the take-up reel lifting / lowering control mechanism 41 includes, for example, a cutting unit lifting / lowering cylinder 18 and a detector 42 that is installed inside the cutting unit lifting / lowering cylinder 18 and detects a sliding amount of the cylinder. As well as a potentiometer (not limited) and a controller C to which the cutting unit elevating cylinder 18 and the detector 42 are connected. In FIG. 6, for convenience of explanation, the crawler belt in the crawler type traveling device 2 on the left side is removed and illustrated.

  Since the sliding amount of the cutting unit lifting cylinder 18 is proportional to the lifting amount of the cutting unit 21, the rising position of the cutting unit 21 increases as the sliding amount increases in the extending direction of the cutting unit lifting cylinder 18. Therefore, as the mowing unit 21 rises, the upper end of the take-up reel 4 (a fixed position where the take-up reel 4 is not raised or lowered) is a position where it does not contact the tip of the discharge auger 16, A sliding amount of the cutting unit elevating cylinder 18 that is a distance r (for example, about 30 cm, but not limited) between the upper end portion and the distal end portion of the discharge auger 16 is set in the controller C in advance.

  Here, in a state where the discharge auger 16 is locked to the auger rest 51, when the operator needs to raise the mowing unit 21 by operating from the cabin 6 or the like according to the work situation, FIG. As shown, when the detector 42 detects the sliding (extension) of the cutting unit elevating cylinder 18 in step S1, the controller C advances the process to step S2. Next, in step S2, if the detector 42 detects that the sliding amount (extension amount) of the cutting unit elevating cylinder 18 has reached a predetermined value, the controller C advances to step S3. In step S3, the controller C Stops the sliding of the cutting unit elevating cylinder 18.

  Therefore, ascending of the cutting unit elevating cylinder 18 stops the ascent of the cutting unit 21, but as shown in FIG. 9, the upper end of the take-up reel 4 and the lower end of the tip of the discharge auger 16 are at a distance r. Therefore, it is possible to prevent contact between the upper end of the take-up reel 4 and the lower end of the tip of the discharge auger 16.

  The scraping reel 4 is normally disposed on the cutting frame 8 with a height h (approximately 20 cm to 30 cm) that can be lowered via the scraping reel lifting cylinder 14 as described above. After the take-up reel lifting / lowering control mechanism 41 has the distance r between the upper end of the take-up reel 4 and the lower end of the tip of the discharge auger 16, the take-up reel 4 is stopped. It is also possible to lower only the position and further separate them.

  In this case, as shown in FIGS. 7 to 8, the controller C slides the take-up reel lifting / lowering cylinder 14 by a predetermined amount in the contraction direction in step S4 after stopping the lifting of the cutting unit 21 in step S3. For this reason, with the height of the cutting unit 21 maintained at the stop position, only the scraping reel 4 is lowered to the lower cutting unit 21 side by about 20 cm to 30 cm (the scraping reel 4 comes into contact with the cutting unit 21). By doing so, the upper end of the take-up reel 4 and the lower end of the tip of the discharge auger 16 can be further separated. Therefore, even if the vehicle swings during traveling, it is possible to reliably avoid contact between the two.

  Note that the potentiometer is not limited to the above example, and as shown in FIG. 10, the potentiometer is installed as a detector 42 ′ by a well-known method at the rotation fulcrum 43 of the cutting unit elevating cylinder 18 attached to the body frame 3. Also, the same effect as described above can be obtained.

  In this case, as described above, by sliding the cutting unit lifting cylinder 18, the pivoting fulcrum 43 at the base end of the cutting unit lifting cylinder 18 is rotated to raise and lower the cutting unit 21. The rotation amount (rotation angle) of the rotation fulcrum 43 corresponding to the ascending position of the cutting part 21 where the upper end of the scraping reel 4 and the lower end of the tip of the discharge auger 16 are at a distance r is determined in advance. Set to controller C.

  And although illustration is abbreviate | omitted, detector 42 'is the amount of rotations (rotation angle) of the rotation fulcrum 43 in the cutting part raising / lowering cylinder 18 with the raising of the cutting part 21, like the control flowchart mentioned above. If it is detected that the predetermined value has been exceeded, the controller C stops the sliding of the reaping part lifting cylinder 18. Accordingly, by stopping the raising of the cutting part 21, the upper end of the scraping reel 4 and the lower end of the tip of the discharge auger 16 have a distance r to stop the raising of the cutting part 21. Contact between the upper end of the reel 4 and the lower end of the discharge auger 16 can be prevented.

  As described above, in addition to installing the detector 42 inside the cutting unit lifting cylinder 18 or installing the detector 42 ′ at the rotation fulcrum 43 of the cutting unit lifting cylinder 18, each of the cutting unit lifting cylinders 18. Alternatively, a stopper may be installed on the rotation fulcrum 43.

  In this case, according to the extension amount of the cutting unit lifting cylinder 18 in which the upper end portion of the scraping reel 4 and the lower end portion of the discharge auger 16 have a distance r, the inner wall of the cutting unit lifting cylinder 18 (not shown) Even if the controller C control described above is inadequate by forming a protrusion on the outer surface of the piston rod as a stopper and a protrusion at the rotation fulcrum 43 on the inside and outside of the rotation part. Alternatively, a configuration may be added in which the upper end portion of the take-up reel 4 and the lower end portion of the distal end of the discharge auger 16 have a distance r due to the interference of the protruding portions serving as both stoppers to prevent contact between the two.

  Next, the take-up reel lifting / lowering control mechanism 45 for raising only the take-up reel 4 will be described. FIG. 11 is an enlarged perspective view of a cutting portion showing a pick-up reel lifting cylinder provided with a detector, FIG. 12 is a control block diagram of a pick-up reel lifting control mechanism by the pick-up reel lifting cylinder, and FIG. 13 is a predetermined height. FIG. 14 is a side view of the vehicle when the scraping reel that has reached a predetermined height is stopped at the stop position. FIG. 15 is an enlarged perspective view of the vicinity of the take-up reel lifting arm showing an example of installation of the detector.

  As shown in FIGS. 11 to 12, for example, the take-up reel lifting / lowering control mechanism 46 is installed in the take-up reel raising / lowering cylinder 14 in the take-up reel 4 in the combine 1 of the present invention. A potentiometer (not limited) known as a detector 47 for detecting the sliding amount of the cylinder, a controller C to which the take-up reel lifting cylinder 14 and the detector 47 are connected, and the like.

  Since the sliding amount of the take-up reel raising / lowering cylinder 14 is proportional to the raising / lowering amount of the take-up reel 4, the higher the sliding amount in the extending direction of the take-up reel raising / lowering cylinder 14, the higher the raising position of the take-up reel 4. . Therefore, as the scraping reel 4 is lifted, the upper end portion of the scraping reel 4 (a fixed position where the cutting portion 21 is not raised and lowered) is a position where the lower end portion of the discharge auger 16 is not in contact with the lower end portion of the discharge auger 16. A sliding amount of the take-up reel raising / lowering cylinder 14 that is a distance r (for example, about 30 cm, but not limited) between the upper end portion of the take-in reel 4 and the lower end portion of the discharge auger 16 is preset in the controller C.

  Here, in the state where the discharge auger 16 is locked to the auger rest 51, when it becomes necessary for the operator to operate the cabin 6 or the like to raise the take-up reel 4 according to the work situation, FIG. As shown, when the detector 47 detects sliding (extension) of the take-up reel lifting cylinder 14 in step s1, the controller C advances to step s2. Next, in step s2, if the detector 47 detects that the sliding amount (extension amount) of the take-up reel raising / lowering cylinder 14 has reached a predetermined value, the controller C advances to step s3, and in this step s3, the controller C Stops sliding of the take-up reel lifting cylinder 14.

  Therefore, ascending the lift of the take-up reel 14 is stopped by stopping the slide of the take-up reel lifting / lowering cylinder 14, but as shown in FIG. Since the raising of the pick-up reel 4 is stopped with the distance r, it is possible to prevent contact between the upper end portion of the pick-up reel 4 and the lower end portion of the tip of the discharge auger 16.

  Note that the potentiometer is not limited to the above-described example. As shown in FIG. 15, even if the potentiometer is installed as the detector 47 'by a well-known method at the rotation fulcrum 49 of the take-up reel lifting / lowering arm 48, the same effect as described above. Can be obtained.

  In this case, as described above, the sliding reel lifting / lowering cylinder 14 is slid to rotate the pivoting fulcrum 49 of the proximal end portion of the scraping reel lifting / lowering arm 48 to raise / lower the scraping reel 4. The rotation amount of the rotation fulcrum 49 corresponding to the ascending position of the take-up reel 4 where the upper end portion of the take-up reel 4 and the lower end portion of the discharge auger 16 at the end of the discharge auger 16 are in a state of distance r. (Moving angle) is set in the controller C in advance.

  Although not shown, the detector 47 ′ rotates the rotation amount (rotation angle) of the rotation fulcrum 49 of the take-up reel lifting / lowering arm 48 as the take-up reel 4 rises, as in the control flow diagram described above. ) Exceeds the predetermined value, the controller C stops the sliding reel raising / lowering cylinder 14 from sliding. Accordingly, by stopping the raising of the scraping reel 4, the upper end portion of the scraping reel 4 and the lower end portion of the distal end of the discharge auger 16 have a distance r to stop the raising of the scraping reel 4. Contact between the upper end of the take-up reel 4 and the lower end of the tip of the discharge auger 16 can be prevented.

  In the above-described example, in the take-up reel lifting / lowering control mechanism 41, the detectors 42 and 42 'are installed in the cutting unit lifting / lowering cylinder 18 or on the rotation fulcrum 43 of the cutting / lifting unit lifting / lowering cylinder 18, and the scraping reel lifting / lowering control mechanism 41 is installed. 46 shows an example in which the detectors 47 and 47 'are installed inside the take-up reel lifting cylinder 14 or the rotation fulcrum 49 of the take-up reel lifting arm 48. However, the present invention is not limited to the above, and Both the rotation support 43 of the cutting unit lift cylinder 18 or the cutting unit lift cylinder 18 and the rotation support point 49 of the take-up reel lift cylinder 14 or the pick-up reel lift arm 48 are used. You may install in.

  The detectors 42, 42 ′, 47, 47 ′ have been described by taking potentiometers as an example. However, the detectors 42, 42 ′, 47, 47 ′ are not limited to this. For example, a known detector such as a limit switch may be used.

  As described above, in addition to installing the detector 47 inside the take-up reel raising / lowering cylinder 14 or installing the detector 47 ′ at the rotation fulcrum 49 of the take-up reel raising / lowering arm 48, You may install a stopper in the rotation fulcrum 49 of the raising / lowering cylinder 14 or the pick-up reel raising / lowering arm 48. FIG.

  In this case, according to the extension amount of the take-up reel lifting cylinder 14 in which the upper end portion of the above-described take-up reel 4 and the lower end portion of the discharge auger 16 have a distance r, the unillustrated take-up reel lift cylinder 14 is a cylinder. Even if the controller C control described above is inadequate by forming protrusions that serve as stoppers on the inner wall and the outer wall of the piston rod, and protrusions that serve as stoppers at the rotation fulcrum 49 inside and outside the rotation part. A configuration may be added in which the upper end portion of the take-up reel 4 and the lower end portion of the distal end of the discharge auger 16 have a distance r to prevent contact with each other due to the interference of one or both of the stoppers serving as stoppers. .

  In addition to the example described above, for example, a distance detector such as a laser distance measuring sensor (not shown) connected to the controller C is installed at the upper end of the take-up reel 4 and / or the lower end of the tip of the discharge auger 16. The controller C is connected with the cutting unit lifting cylinder 18 and / or the take-up reel lifting cylinder 14.

  Thus, when the cutting unit 21 or the take-up reel 4 is raised, the distance detector detects that the upper end portion of the take-up reel 4 and the lower end portion of the tip of the discharge auger 16 have approached the distance r. The controller C may be configured to stop the raising of the cutting unit 21 or the take-up reel 4 as described above.

  Next, as described above, when the harvesting unit 21 or the take-up reel 4 is raised according to the work situation, the raising of the harvesting unit 21 or the take-up reel 4 is stopped by the take-up reel lifting control mechanisms 41 and 46. The upper end portion of the take-up reel 4 and the lower end portion of the discharge auger 16 at the stop position at a distance r or the upper end portion of the take-up reel 4 by forcibly lowering only the take-up reel 4 When the cutting part 21 or the take-up reel 4 is lowered to the original working position from the stop state at the stop position where the lower end of the discharge auger 16 is the distance R, the operator The cutting member 21 and / or the take-up reel 4 is returned to the original working position below by operating with the operating member.

  However, the operator forgets that the harvesting part 21 and / or the take-up reel 4 is stopped at the stop position due to the operation of the take-up reel lifting / lowering control mechanisms 41, 46, or is not aware of the following. The combine 1 of the present invention may be provided with an alarm means so that the above operation is not performed. FIG. 16 is an enlarged side view of the cutting unit showing an example of the alarm means.

  As shown in FIGS. 7 and 12, the alarm means 50 is connected to the controller C that constitutes the take-up reel lifting / lowering control mechanisms 41 and 46. The alarm means 50 is preferably installed, for example, on the upper part of the cutting part 21 visible from the cabin 6 or in the vicinity of the tip of the discharge auger 16 as shown in FIG. The alarm means 50 is not limited to a warning lamp, and a known method such as an alarm sound can be used.

  Then, as described above, when the cutting unit 21 or the pick-up reel 4 is raised, the pick-up reel lifting / lowering control mechanisms 41 and 46 stop the raising of the cutting unit 21 or the pick-up reel 4 and The upper end portion and the lower end portion of the discharge auger 16 at the stop position at a distance r, or only the take-up reel 4 is forcibly lowered and the upper end portion of the take-up reel 4 and the end of the discharge auger 16 are When a stop state is established at these stop positions with the lower end as a distance R, the controller C activates the alarm means 50 and informs the operator that the cutting unit 21 and / or the take-up reel 4 is in the above state. Inform.

  With such a configuration, the operator easily recognizes that the cutting unit 21 and / or the take-up reel 4 is stopped at the stop position in order to avoid contact between the take-up reel 4 and the discharge auger 16. In the case of moving to the next work, the operation of the take-up reel lifting / lowering control mechanisms 41 and 46 is canceled without forgetting, and the cutting unit 21 and / or the take-up reel 4 is returned to the original work position below. Can do.

As described in detail above, the ordinary combine 1 of this example has the cutting part 2 disposed in the front part of the vehicle.
1 is provided with a scraping reel 4 at the top of the vehicle, a discharge auger 16 is disposed at the top of the vehicle, and a cutting unit 21 is installed on the machine body frame 3 via a cutting unit lifting cylinder 18 constituting a cutting unit lifting device, The cutting reel lift cylinder 18 is provided so that it can be moved up and down. The scraping reel 4 is installed between the left and right scraping reel lifting arms 48 attached to the cutting frame 8 via the scraping reel lifting cylinder 14. The lifting / lowering cylinder 14 is provided so as to be movable up and down, and the cutting unit lifting device and / or the take-up reel lifting device includes detectors 42, 42 ', 47, which detect the amount of lifting of the cutting unit 21 and / or the take-up reel 4. 47 'is provided, and when the cutting unit 21 and / or the take-up reel 4 exceeds a predetermined increase value based on the detection information of the detectors 42, 42', 47, 47 ', the cutting unit 21 It is provided with a scraping reel lift control mechanism 41, 46 for controlling the elevation of the beauty / or scraping reel 4.

  The present invention can be applied to any ordinary combine that has a scraping reel above the cutting portion and is provided above the scraping reel so that a discharge auger can be locked on the upper part of the vehicle body.

4 Reeling Reel 14 Reel Reel Lifting Cylinder 16 Discharge Auger 18 Mowing Lifting Elevator Cylinder 21 Reaping Moment 41, 46 Scratching Reel Elevating Control Mechanism 42, 42 ', 47, 47' Detector 43, 49 Rotation Support 48 Reel lifting arm 50 Alarm means C Controller R, r Distance

Claims (3)

A scraping reel is provided above the cutting part disposed at the front of the vehicle, and a discharge auger is disposed at the top of the vehicle,
The mowing unit is installed in the machine frame via a mowing unit lifting cylinder that constitutes a mowing unit lifting device, and is provided so as to be movable up and down by the mowing unit lifting cylinder.
The take-up reel is installed between right and left take-up reel lifting arms attached to the cutting frame via a take-up reel lift cylinder constituting the take-up reel lifting device, and can be moved up and down by the take-up reel lift cylinder. In ordinary type combine to prepare for
The cutting unit lifting device and / or the scraping reel lifting device is provided with a detector that detects the lifting amount of the cutting unit and / or the scraping reel,
Based on the detection information of the detector, a scraping reel lifting / lowering control mechanism that controls lifting / lowering of the harvesting portion and / or the scraping reel when the harvesting portion and / or the scraping reel exceeds a predetermined rising value An ordinary combine that is characterized by its provision.   The detector is a rotation fulcrum of each of the cutting unit lifting cylinder and / or the take-up reel lifting arm, or a potentiometer installed on the cutting unit lifting cylinder and / or the pick-up reel lifting cylinder. The ordinary combine according to claim 1.   2. The ordinary combine according to claim 1, wherein the take-up reel raising / lowering control mechanism raises, stops, or forcibly lowers the take-up reel.

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