JP2012228229A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester enabling an operator to easily confirm the length of a coil spring from a driver's seat.SOLUTION: The driver's seat 12 and an engine are arranged in front positions of a traveling machine body, and a grain tank 5 for storing grains is arranged behind them. An unloader is provided for delivering grains from the grain tank 5, and a delivery clutch C is provided for switching on/off driving force transmitted from the engine to the unloader. The delivery clutch C includes a transmission belt 47 wound between a driving pulley 45 rotated by the engine, and an input pulley 46 to the unloader 6, and a tension roller 48 applying tension to the transmission belt 47. At least one operating rod 53a or 53b and the coil spring 54 are interposed in series between the tension roller 48 and on/off operating members 18, 20 arranged near the driver's seat 12, and the coil spring 54 is arranged above the longest operating rod 53a.

Description

  In the present invention, a driver's seat and an engine are arranged at a front position of a traveling machine body, a grain tank for storing grains is arranged behind them, an unloader for discharging grains from the grain tank, and an unloader from the engine The present invention relates to a combine equipped with a discharge clutch for turning on and off the driving force transmitted to the vehicle.

  As prior art document information related to this type of combine, there is Patent Document 1 shown below. In the combine described in Patent Document 1, an electric operation mechanism that switches a belt tension type discharge clutch with an electric force, and a manual operation mechanism that switches the discharge clutch with an artificial operation force in preference to the electric operation mechanism. Two operating mechanisms are provided.

  Therefore, in the combine described in Patent Document 1, even when the unloader is turned on and off by a simple operation by the electric operation mechanism, even when the electric operation mechanism is broken, the unloader is turned on and off by the manual operation mechanism. Can perform work.

  The belt tension type discharge clutch is based on a transmission belt wound between a drive pulley rotated by an output shaft of an engine and an input pulley of an unloader, and a clutch engagement operation from an electric operation mechanism or a manual operation mechanism. And a tension roller for applying tension to the transmission belt. The upper end of the long operating rod is pivotally supported near the outer periphery of the rotating body that is rotationally driven by the electric motor of the electric operating mechanism. The lower end of the operating rod and the part of the tension arm that supports the tension roller are It is connected by a coil spring.

  Therefore, it is possible to estimate whether or not the tension of the transmission belt is sufficient by observing the length of the coil spring during the clutch engagement operation with the engine stopped. Therefore, when checking the discharge clutch before driving the unloader, if the tension of the transmission belt is estimated to be insufficient due to the extension of the transmission belt from the length of the coil spring during the clutch engagement operation, the length of the coil spring The tension of the transmission belt is reduced by shortening the substantial length of the operating rod by operating a turnbuckle (length adjusting means) that is installed in a part of the operating rod so that the length becomes normal. Can be raised to an appropriate level.

JP 2002-27827 A (paragraphs 0006 to 0007, FIG. 4)

  However, in the combine described in Patent Document 1, the coil spring of the discharge clutch is disposed at a position lower than the driver's seat, like the transmission belt and the input pulley of the unloader, so that the operator gets down from the driver's seat to the ground. Therefore, it was necessary to check the length of the coil spring, and the work efficiency was not sufficient.

  Also, in a combine that cannot be switched to the maintenance open position without removing the transmission belt from at least one pulley, check the length of the coil spring from the narrow gap between the closed Glen tank and the cabin. I was forced to do complicated work.

  Therefore, in view of the problems given by the above-described conventional combine, the object of the present invention is to provide a combine that allows the operator to easily check the length of the coil spring without having to get off the driver's seat to the ground. There is to do.

The characteristic configuration of the combine according to the present invention is as follows:
A driver's seat and an engine are arranged at the front position of the traveling machine body, a grain tank for storing the grain is arranged behind them, an unloader for discharging the grain from the grain tank, and the engine is transmitted to the unloader. And a discharge clutch for turning on and off the driving force
The discharge clutch is a combine provided with a transmission belt that is wound between a drive pulley that is rotated by an output shaft of the engine and an input pulley to the unloader, and a tension roller that applies tension to the transmission belt. ,
At least one operation rod and a tension coil spring are interposed in series between an on / off operation member disposed in the vicinity of the driver seat and the tension roller, and the operation rod has the longest tension coil spring. It is in the point arrange | positioned rather than.

  In the combine according to the above characteristic configuration, the tension coil spring is located higher than the longest operating rod, so that the tension coil spring is at a high position. The length of the tension coil spring can be confirmed by just twisting or setting it up. That is, when checking the discharge clutch before driving the unloader, it is possible to estimate whether the tension of the transmission belt is sufficient from the length of the tension coil spring that is visually confirmed without getting off the ground from the driver's seat. If it is estimated that the unloader is sufficient, the unloader can be driven immediately and high work efficiency can be obtained.

  In another aspect of the present invention, the on / off operation member includes an operation arm that is swing-operated by a discharge lever disposed in the vicinity of the driver seat, and the tension coil spring includes the operation portion of the operation arm and the operation It is in the point locked between the upper ends of the rods.

  In this configuration, one end of the tension coil spring is locked to the operation arm that is swing-operated by the discharge lever. In other words, the tension coil spring is substantially near the operation arm operated by the operator of the driver seat. Therefore, the operator can confirm the length of the tension coil spring by only slightly twisting the upper body or the neck or getting out of the body while sitting on the driver's seat.

  According to another characteristic configuration of the present invention, a length adjusting means for changing a length of the operating rod is further interposed between the on / off operating member and the tension roller, and the length adjusting means and The tension coil spring is located above the longest operating rod.

  In this configuration, since the length adjusting means is also disposed above the longest operating rod, and the length adjusting means is at a high position, the operator can adjust the length adjusting means from the vicinity of the driver seat. Operations can be performed. That is, even when it is determined that the tension of the transmission belt is insufficient from the length of the tension coil spring visually confirmed, the length adjustment means is operated so that the length of the tension coil spring is appropriate without descending to the ground. Since sufficient tension can be applied to the transmission belt, higher working efficiency can be obtained.

It is a right whole side view of the combine which concerns on this invention. It is a left whole side view of the combine which concerns on this invention. 1 is an overall plan view of a combine according to the present invention. It is a front view which shows the discharge clutch vicinity of an unloader. It is a top view which shows the discharge clutch vicinity of an unloader. It is a front view which shows the operation arm vicinity of a discharge clutch. It is a right view which shows the operation arm vicinity of a discharge clutch. It is a front view which shows the boundary vicinity of a threshing apparatus and a collection | recovery part. It is a right principal part side view which shows the exhaust structure of a combine. It is a principal part front view which shows the connection means of a Glen tank. It is a principal part top view which shows the connection means of a Glen tank. It is a right principal part side view which shows the connection means of a Glen tank. It is a partially exploded perspective view showing the vicinity of the exhaust guide of the exhaust tube. It is a left principal part side view which shows the exhaust guide vicinity of an exhaust pipe. It is explanatory drawing which shows the exhaust guide vicinity of FIG. It is explanatory drawing which shows the other attachment attitude | position of an exhaust guide. It is a right principal part side view which shows the auger for grain discharge. It is a principal part rear view which shows the auger vicinity for grain discharge. It is a principal part top view which shows the auger for grain discharge. It is the perspective view which shows the attachment structure of a hump, and the side view of a hump.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated, referring drawings.
[Overall structure of the combine]
As shown in FIGS. 1, 2, and 3, a cutting crop 3 is slashed at a front end of a traveling machine body 2 that is traveled by a pair of left and right crawler travel devices 1. The threshing device 4 to be supplied and the Glen tank 5 for storing the grains sent from the threshing device 4 are arranged in parallel in the left and right positions of the traveling machine body 2, and the Glen tank 5 includes an unloader 6 for discharging the grains. A self-detaching combine is configured by including an operation unit 10 on which an operator gets on the front of the Glen tank 5 at the front of the traveling machine body 2.

  This combine is provided with an engine E below the driver's seat of the driver 10, and drives the cutting unit 3 and the threshing device 4 with the driving force of the engine E during the harvesting operation, and also drives the crawler travel device 1. The traveling machine body 2 is caused to travel. As a result, the harvesting unit 3 cuts the cereal stock and cuts the cereal, transports the chopped cereal to the threshing device 4 and performs the threshing process, and the cereal from the processed product obtained by the threshing process. The operation of selecting the grains and storing them in the Glen tank 5 is performed.

[Operation section]
The driving unit 10 includes a step 11 on which an operator gets on and a driver seat 12 on which the operator is seated, and an operation lever 13 that is operated by the operator at a position in front of the driver seat 12. A main speed change lever 15 and a sub speed change lever 16 are provided on the panel portion 14 at the side portion of the driver seat 12, and the discharge operation panel 14 </ b> D disposed on the rear end side portion of the panel portion 14 has a discharge lever 18 An example of an operation member) is provided.

  The control lever 13 is neutrally biased so as to maintain a neutral posture in a non-operating state, and swinging in either the left or right direction realizes the steering / turning of the traveling machine body 2, either before or after The mowing unit 3 is moved up and down by operating in the direction of. The main transmission lever 15 performs a stepless speed change of the traveling speed, and includes a neutral position where the traveling machine body 2 is stopped, a forward shift range formed forward from the neutral position, and a backward position from the neutral position. It is configured to be freely operated in a reverse shift range that is formed. The auxiliary transmission lever 16 performs a multi-stage transmission operation. The discharge lever 18 discharges the grains stored in the glen tank 5 by operating a discharge clutch C that turns on and off the driving force transmitted from the engine E to the unloader 6.

  The driver seat 12 is provided on the upper surface of an engine cover that covers the engine E, and an air cleaner 23 that purifies the intake air supplied to the engine E is provided at a rear position of the driver seat 12. The air cleaner 23 is supplied with intake air from the precleaner 24 via a columnar intake pipe. The intake air sent from the air cleaner 23 is supplied to the engine E via an intake path inside the engine cover.

  As shown in FIGS. 3 and 5, the base end portion of the discharge lever 18 is disposed on the left side and the rear side of the driver seat 12, and the operation area of the discharge lever 18 overlaps above the air cleaner 23 in a side view. Formed in position. Also, as shown in FIG. 4, when the discharge lever 18 is in a vertical posture, the dimensional relationship is set so that the upper end portion of the discharge lever 18 is higher than the upper end of the seat back 12A.

[Unloader]
As shown in FIG. 1, a bottom screw 31 </ b> S that constitutes a discharge conveyor 31 that sends out the grains stored in the grain tank 5 is disposed at the bottom of the grain tank 5. The unloader 6 has an elbow-shaped carry-out case 32 that guides the grain sent from the bottom screw 31S upward, a vertical transport conveyor 33 that transports the grain sent from the carry-out case 32 upward, and the vertical transport conveyor 33. The intermediate conveyor 34 which conveys the grain sent from the horizontal direction, and the horizontal conveyance conveyor 35 which sends the grain sent from this intermediate conveyor 34 to a horizontal direction are provided. Further, the horizontal transfer conveyor 35 is configured to be bendable at an intermediate portion, and a discharge portion 36 is formed at an end portion on the discharge side.

  The vertical conveyor 33 has a configuration in which a vertical conveyance screw (not shown) is accommodated in a cylindrical case, and the intermediate conveyor 34 has a configuration in which an intermediate screw (not shown) is accommodated in a cylindrical case. have. The horizontal transfer conveyor 35 has a configuration in which a horizontal transfer screw 35S is housed in a cylindrical case. An intermediate portion of the cylindrical case of the horizontal transfer conveyor 35 is foldably connected via a hinge, and can be switched between a separated state and a connected state in the middle of the horizontal transfer screw 35S so as to allow the folding. A fitting connection part (not shown) is provided.

  The end of the bottom screw 31 </ b> S on the carry-out side is arranged inside the carry-out case 32, and the lower end of the vertical carrying screw (not shown) of the vertical carrying conveyor 33 is arranged inside the carry-out case 32. Due to such an arrangement, a first bevel gear mechanism (not shown) is provided in the carry-out case 32 to interlock the bottom screw 31S and the vertical conveying screw of the vertical conveying conveyor 33.

  The upper end of the vertical conveying screw of the vertical conveying conveyor 33 is arranged inside the case of the intermediate conveyor 34, and the end of the horizontal conveying conveyor 35 on the base end side (opposite to the unloading direction) is arranged inside the case of the intermediate conveyor 34. Has been. From such an arrangement, a second bevel gear mechanism (not shown) that links the vertical conveying side of the intermediate screw of the intermediate conveyor 34 with the upper end of the vertical conveying screw of the vertical conveying conveyor 33 is provided inside the case of the intermediate conveyor 34. Is provided. In addition, a third bevel gear mechanism (not shown) is provided inside the intermediate conveyor 34 for interlocking the lateral conveying conveyor side of the intermediate screw of the intermediate conveyor 34 with the proximal end side of the lateral conveying screw 35S.

  As shown in FIG. 1, an elevating cylinder 38 is provided between the base end side of the horizontal transfer conveyor 35 and the intermediate conveyor 34. As shown in FIG. 5, the discharge operation panel 14 </ b> D of the discharge lever 18 includes a plurality of control buttons 21 that control the turning motor 37 and the lifting cylinder 38. Although not shown in the drawing, a control device is provided that activates either the elevating cylinder 38 or the swing motor 37 in response to an operation of any of the plurality of control buttons 21.

  With such a configuration, when the operator operates one of the plurality of control buttons 21 corresponding to the turning, the turning motor 37 is operated, and thereby the unloader 6 is turned around the vertical axis Y and discharged. The setting of the grain carry-out direction from the unit 36 can be performed. Further, by operating one of the control buttons 21 corresponding to the lifting / lowering, the lifting / lowering cylinder 38 is expanded / contracted, and the tip of the horizontal transfer conveyor 35 is lifted / lowered around the horizontal axis so that the grain from the discharge unit 36 is removed. The carry-out height can be set.

[Discharge clutch]
As shown in FIGS. 4 to 8, the drive system of the unloader 6 includes a belt-type transmission mechanism that transmits the driving force of the engine E to the bottom screw 31 </ b> S, and a discharge clutch C that performs intermittent driving force. That is, the intermediate belt 44 formed of an endless belt is wound around the output pulley (not shown) provided on the output shaft of the engine E and the intermediate input pulley 43 provided on the input shaft of the gear box 42. The gear box 42 incorporates a pair of bevel gears so as to transmit the rotational power transmitted to the input shaft to the output shaft in a posture orthogonal to the input shaft. An intermediate output pulley 45 provided on the output shaft of the gear box 42 A transmission belt 47 formed of an endless belt is wound around the input pulley 46 provided on the input shaft at the outer end of the bottom screw 31S, and a tension roller 48 that applies tension to the transmission belt 47 is provided.

  A columnar support frame 51 is erected on the fuselage frame 2F at a position in front of the Glen tank 5 and behind the side of the driver's seat 12, and swings with respect to the support frame 51 via a shaft body 49A in a front-rear orientation. A tension arm 49 is movably supported, and the tension roller 48 is rotatably supported on the swing end of the tension arm 49.

  The discharge clutch C includes the intermediate output pulley 45, the input pulley 46, the transmission belt 47, the tension roller 48, and the tension arm 49 described above, and is disposed at a front position below the glen tank 5. The discharge clutch C is configured to be switchable between an on state in which the tension roller 48 controls the tension applied to the transmission belt 47 by switching the swinging posture of the tension arm 49 and a cut off state in which the power is cut off. Has been.

[Clutch operating mechanism]
As shown in FIGS. 4 to 8, a clutch operating mechanism F is provided between the discharge lever 18 and the tension arm 49 in order to control the discharge clutch C by the discharge lever 18 of the driver seat 12.
The clutch operation mechanism F includes an operation arm 20 that is swung based on a swing operation of the discharge lever 18, a coil spring 54 (an example of a tension coil spring) whose upper end is locked near the tip of the operation arm 20, and a coil spring. A long operation rod 53 is interposed between the lower end of 54 and the tension arm 49. The operation rod 53 and the coil spring 54 are arranged in series between the discharge lever 18 and the tension roller 48.

The operating rod 53 includes a lower first rod 53a (an example of the longest operating rod) connected to the tension arm 49, and an upper second rod 53b connected to the coil spring 54, and the first rod 53a The second rod 53b is connected by a turnbuckle 55 (an example of a length adjusting unit).
The lower first rod 53a is longer than the upper second rod 53b, and in particular, here, the first rod 53a has a length of about 10 times that of the second rod 53b.
As a result, in both the “on” posture (shown by a solid line in FIG. 4) and the “off” posture (shown by a two-dot chain line in FIG. 4) of the discharge lever 18, the coil spring 54 is seat back 12 A of the driver seat 12. The turnbuckle 55 is positioned at a height near the upper surface of the seat 12B of the driver seat 12.

  More specifically, the discharge lever 18 and the operation arm 20 are supported by a discharge operation panel 14 </ b> D disposed behind the panel unit 14. The discharge operation panel 14 </ b> D has a box shape fixed near the upper end of the support frame 51. An operation rod 19 is inserted and supported in a tubular support 19T supported on the rear side wall of the discharge operation panel 14D so as to be rotatable about a longitudinal axis X1, and the base end portion of the operation arm 20 is operated. The rear end of the rod 19 is fixed by welding or the like, and the base end of the discharge lever 18 is externally fixed to the front end of the operation rod 19. The discharge lever 18 and the operation arm 20 extend from the operation rod 19 in a direction almost parallel to the operation rod 19.

As shown in FIGS. 4 and 6, the discharge lever 18 is configured to be swingable around the axis X1, but the swing range is such that the upper end of the discharge lever 18 of the discharge operation panel 14D is the axis X1. Further, the range is limited to a range from an “on” posture closer to the driver seat 12 to an “off” posture where the upper end of the discharge lever 18 is closer to the vehicle side from the driver seat 12 than the axis X1.
As shown in FIG. 5, the swing limit of the discharge lever 18 can be realized by both ends of the long hole 14H formed so that the discharge lever 18 is inserted through the top plate 14T constituting the discharge operation panel 14D. Although possible, it may be realized by providing a dedicated stopper member inside the discharge operation panel 14D.
On the surface of the top plate 14T near both ends of the long hole 14H, characters (not shown) indicating the positions of the “on” and “off” postures of the discharge lever 18 are attached by sticker or printing.

  As shown in FIGS. 4 and 6, the clutch operating mechanism F is in a state in which the discharge clutch C is disengaged by reducing the tension acting on the transmission belt 47 from the tension roller 48 when the discharge lever 18 is in the “off” position. Set to. When the discharge lever 18 is operated to the “ON” position, the tension applied to the transmission belt 47 from the tension roller 48 is increased by operating the swinging end of the tension arm 49 in the lifting direction, thereby disengaging the discharge clutch C. Set to ON state.

  In particular, when the discharge lever 18 is operated from the “OFF” position to the “ON” position, the tension of the transmission belt 47 and the urging force of the coil spring 54 act particularly effectively. When the operation lever 20 is operated, the discharge lever 18 reaches one of the swing limits (near the vehicle inner side), and the connection point between the operation arm 20 and the coil spring 54 before the swing limit reaches the swing limit. The discharge lever 18 is stably held in the “ON” position by reaching a position close to the driver's seat 12 over the dead point where the coil spring 54 becomes the longest in a generally vertical posture.

  Thus, when the discharge clutch C reaches the engaged state, the driving force of the engine E is transmitted to the bottom screw 31S by the transmission belt 47, and from the bottom screw 31S, the vertical conveying screw of the unloader 6, the intermediate screw, The grain transported to the lateral conveying screw 35S and stored in the Glen tank 5 is carried out.

  On the other hand, when the discharge lever 18 is operated from the “ON” position to the “OFF” position, the discharge lever 18 reaches the swing limit of the other (near the vehicle outer side), and the operating arm before reaching the swing limit. 20 and the coil spring 54 reach the opposite side of the driver's seat 12 beyond the dead point where the operating arm 20 is in a generally vertical posture and the coil spring 54 is the longest, so that the discharge lever 18 is stabilized in the “OFF” position. Retained.

  In such a configuration of the clutch operating mechanism F, it is possible to estimate whether the tension of the transmission belt 47 is sufficient by looking at the length of the coil spring 54 in a state where the discharge lever 18 is operated to the “ON” position. It becomes possible. Therefore, when it is determined that the tension of the transmission belt 47 is insufficient due to the extension of the transmission belt 47 or the like based on the length of the coil spring 54 at the “in” position of the discharge lever 18, the length of the coil spring 54 is normal. The tension of the transmission belt 47 can be increased to an appropriate level by shortening the substantial length of the operation rod 53 by operating the turnbuckle 55 so that the length becomes long.

In the combine according to the present invention, as described above, the coil spring 54 is in the vicinity of the discharge lever 18, specifically, the height in the vicinity of the middle of the upper and lower sides of the seat back 12 </ b> A of the driver seat 12 behind the driver seat 12. It is in a position where it can be easily observed if the worker turns.
Accordingly, when the operator can estimate whether the tension of the transmission belt is sufficient from the length of the coil spring 54 at the “enter” position of the discharge lever 18 without leaving the driver's seat 12, and when it can be estimated that the tension is sufficient. Then, after the engine E is driven, the discharging lever 18 is switched to the “ON” posture again, whereby the kernel is discharged by the unloader 6. When it can be estimated that the tension is insufficient, the substantial length of the operation rod 53 may be adjusted by operating the turnbuckle 55 so that the length of the coil spring 54 is appropriate.

  In the present embodiment, the turnbuckle 55 is also located at a height near the upper surface of the seat 12B of the driver seat 12 just below the coil spring 54, so that the operator does not leave the step 11 of the driver 10 without turning off the turnbuckle 55. The tension can be adjusted by rotating and the grain can be discharged by the unloader 6 by continuously switching the discharge lever 18 to the “on” posture after the tension is adjusted.

[Thresher and Glen Tank]
As shown in FIG. 9, a main casing 4 </ b> S constituting the threshing apparatus 4 is provided with a handling chamber 4 </ b> A, and the stocker side is sandwiched and conveyed by a feed chain 56 (see FIG. 2) in the handling chamber 4 </ b> A. The tip of the cereal cocoon is handled by a handling cylinder 57 that is driven to rotate about the front and rear horizontal axes by the power from the engine E.

  In the handling chamber 4A, the processed material separated from the grain culm is sorted by a receiving net (not shown) stretched along the lower part of the handling chamber 4A, and the processed material leaking through the receiving net is located below the handling chamber 4A. While being dropped and supplied to the first half of the deployed sorting unit 4B, the processed material that has not leaked through the receiving net is carried out from the dust feed port at the end of the handling chamber 4A and dropped to the front and rear intermediate parts of the sorting unit 4B. Supplied.

  The processed material dropped and supplied to the sorting unit 4B is received by a rocking sorting case 58 that is long in the front-rear direction, and the processed material is swung and conveyed backward by the rocking sorting case 58 while being sorted by a specific gravity difference using a Glen pan. Sieve sorting is performed by using a chaff sheave for rough sorting, a grain sheave for fine sorting, a sorting rack for loosening, a stroller, or the like. In addition, the sorting wind that flows from the tang 59 provided at the front end of the sorting unit toward the upper rear is supplied to the processed product that is sieved and dropped, and light straw scraps and dust contained in the processed product are It is supposed to be scattered and discharged.

  Then, the grain is sorted and collected as No. 1 by the No. 1 recovery unit 60 and No. 2 by the No. 2 recovery unit 62, and the straw scraps that do not leak through the Strollac are discharged from the dust outlet 4C at the rear end of the sorting unit. It is discharged outside. In addition, the first grain recovered by the first recovery unit 60 is laterally fed to the outside by the first lateral feed screw SF1, and then fed by the screw-type cerealing device 61 to the grain tank. No. 2 is supplied to 5 and collected in the second collection unit 62 is laterally fed by the second lateral feed screw SF7, and then is oscillated and sorted by the screw type reduction device 63 via the reduction guide plate 63A. It is configured to be supplied to the front part of the case 58 and subjected to a re-sorting process.

  A dust exhaust fan 66 composed of a cross-flow fan is horizontally installed in the rear upper part of the sorting unit 4B at the rear of the handling chamber 4A, and the sorting unit is separated by dust floating, waste dust, and sorting wind blown from the end of the handling chamber 4A. Dust floats and straw scraps blown upward at the rear of 4B are sucked into the dust exhaust fan 66 and forcibly discharged to the rear of the machine body. In addition, a waste straw carrier device 67 is disposed above the dust exhaust fan 66, and the waste straw transported from the handling chamber 4A is inherited from the feed chain 56 to the waste straw carrier device 67, and is located at the rear and tip. It is conveyed obliquely toward the side and is supplied to a waste straw cutter device 68 connected to the rear end upper part of the threshing device 4 so as to be shredded.

  A lid body 69 that can close the opening 68A of the exhaust wall cutter device 68 is swingably provided on the upper portion of the exhaust wall cutter device 68. When the lid 69 is open as shown by the solid line, the waste straw that has been nipped and conveyed to the rear end of the waste straw transport device 67 is supplied to the waste straw cutter device 68 through the opening 68A and shredded. Is released downward. On the other hand, when the lid 69 is closed, the waste straw dropped and released from the rear end portion of the waste straw transporting device 67 is dropped and released rearward along the inclined upper surface of the lid 69.

  As shown in FIG. 3, the Glen tank 5 has a working position (indicated by a solid line) located entirely behind the engine E around the vertical axis X2 provided in the rear portion thereof, and a front portion on the right side of the body frame 2F. It is configured to swing and displace between a maintenance position (indicated by a two-dot chain line) that projects outward and opens the rear side of the engine E and the right side wall of the threshing device 4. Regardless of the rocking displacement of the grain tank 5, the whipping device 61 is maintained at a fixed position on the threshing device 4 side, and the grain provided at the upper end of the whipping device 61 according to the rocking displacement of the grain tank 5. The grain supply port 61M is connected to and separated from the Glen tank 5.

Between the threshing device 4 and the Glen tank 5, as a mechanism for holding the Glen tank 5 in the working position, the first lock mechanism 70A located in the middle of the Glen tank 5 in the height direction, and the Glen tank 5 And a second lock mechanism 70B located near the lower end of the.
The first lock mechanism 70 </ b> A includes a lock pin 71 that is supported forward on the side surface of the threshing device 4 and a clamp device 72 that is disposed on the front wall surface of the glen tank 5. The clamp device 72 includes a support bracket 73 fixed to the front wall surface of the Glen tank 5 with a bolt or the like, and a swing clamp plate 74 pivotally supported around the axis X3 in the vehicle longitudinal direction with respect to the support bracket 73. .

  A recess for receiving the lock pin 71 is formed at the distal end of the support bracket 73, and a hook-shaped locking portion 74 </ b> A is provided at the distal end of the swing clamp plate 74. The swing clamp plate 74 is swingable between a lock position where the lock pin 71 is restrained between the recess of the support bracket 73 and the locking portion 74A and a release position where the lock pin 71 is released from the recess. ing. A coil spring 75 is interposed between the support bracket 73 and the swing clamp plate 74 to urge the swing clamp plate 74 toward the lock position.

  A guide inclined surface is formed on the surface of the locking portion 74A of the swing clamp plate 74 facing the threshing device 4 side. Therefore, when the Glen tank 5 is swung from the maintenance position to the working position, the rocking clamp plate 74 is released against the urging force of the coil spring 75 by the contact with the lock pin 71 approaching from the side. When the lock pin 71 enters the recess when operated to the position, the swing clamp plate 74 is automatically switched to the lock position by the urging force of the coil spring 75, and the lock pin 71 is completely restrained.

  If the second lock mechanism 70B provided near the lower end of the Glen tank 5 is further locked, the position holding of the Glen tank 5 at the working position is completed. The second lock mechanism 70B has a lock pin 76 that is supported in a vertically displaceable manner near the lower end of the Glen tank 5, and this lock pin 76 is connected to a locking hole 2H formed on the upper surface of the body frame 2F. The lock operation and the lock release operation of the second lock mechanism 70B are performed by engaging / disengaging.

  10 to 12, the lock pin 71 of the first lock mechanism 70A is provided as a part of a multipurpose bracket 80 (an example of a single assembly) supported on the side surface of the threshing device 4. Yes. The multipurpose bracket 80 includes a plate-like base end portion 80A fixed to the side surface of the threshing device 4 with a bolt or the like, and a vertical flange portion 80B extending toward the Glen tank 5 from the vicinity of the rear end of the base end portion 80A. The plate-like auxiliary bracket 81 is fixed to the front end of the vertical flange portion 80B with a bolt or the like, and the lock pin 71 is erected from the vicinity of the front end of the auxiliary bracket 81.

  At the lower end of the base end portion 80A, a hot air volume adjustment lever 59L for adjusting the air volume of the hot spring 59 according to the area of the opening is pivotally supported around the horizontal axis X4. A plate-shaped air volume guide 82 for the tang air volume adjusting lever 59L extends generally horizontally from the upper end. The air volume guide 82 is formed with an irregular groove-shaped guide hole 82H for allowing the air volume adjustment lever 59L to be inserted and at the same time selectively positioning the air volume adjustment lever 59L at one of a plurality of set angles. An operation rod 59A extends from the vicinity of the lower end of the Chinese style air volume adjusting lever 59L toward the opening of the Chinese style 59.

  As described above, the multipurpose bracket 80 is integrally provided with the lock pin 71 for holding the Glen tank 5 in the working position, the air volume adjusting lever 59L for adjusting the air volume of the tang 59, and the air volume guide 82. Since it is a single assembly, the efficiency of the assembly work of the combine can be improved.

  In addition, a lock release device 83 for switching the Glen tank 5 held at the work position by the lock mechanism 70 to the maintenance position is provided on the front surface of the Glen tank 5. The lock release device 83 includes a lock release arm 84 supported at the lower end of the front surface of the Glen tank 5 so as to be swingable about a vehicle longitudinal axis, a part of the lock release arm 84, and one of the swing clamp plates 74. And an unlocking rod 85 for connecting the parts.

  When switching the Glen tank 5 to the maintenance position, first, the transmission belt 47 is removed from the input pulley 46 and the like, and then the lock release arm 84 is moved from the gap between the Glen tank 5 and the operating unit 10 to the vehicle. Defeat to the side. Then, the rocking clamp plate 74 is operated to the release position via the lock release rod 85, and the lock pin 71 is released from the clamp device 72, so that the first lock mechanism 70A is in the unlocked state. Therefore, if the second lock mechanism 70B is also brought into the unlocked state by switching the lock pin 76 located below the Glen tank 5 to the state in which the lock pin 76 is removed from the locking hole 2H, the Glen tank 5 is moved toward the maintenance position. Can be operated.

  In addition, since the supply pipe | tube 61T of the threshing apparatus 61 is extended up and down in the position spaced apart from the main casing 4S of the threshing apparatus 4 to the grain tank 5 side, A groove-like recess 5 </ b> V extending in the vertical direction for accommodating most of the supply cylinder 61 </ b> T of the cerealing device 61 is provided.

[Exhaust structure]
As shown in FIG. 9, the exhaust pipe XP is passed obliquely upward between the threshing device 4 and the glen tank 5 from the exhaust discharge pipe 86 </ b> A of the engine muffler 86 in the left-right direction of the machine body. A first pipe part 87 that extends linearly to a height that exceeds the first pipe part 87, and a second pipe that is also linearly extended obliquely upward from the rear end of the first pipe part 87 with a gentler slope than the first pipe part 87. And a pipe part 89.

Further, the first tube portion 87 and the second tube portion 89 are arranged so as to have an inverted V shape in a side view, and as shown in FIG. Has been deployed. More specifically, in plan view, the second pipe portion 89 is disposed in a state slightly inclined to the rear right side of the machine body from a connection position to the rear end of the first pipe portion 87 extending in the front-rear direction. .
The 1st pipe part 87 is comparatively so that the whole 2nd pipe part 89 may be arrange | positioned behind the supply cylinder 61T of the threshing apparatus 61, and above the height of the ceiling part of the threshing apparatus 4. It extends obliquely upward with a steep slope and passes through a position that sufficiently detours the return guide plate 63A of the reduction device 63 upward.

The 2nd pipe part 89 is arrange | positioned below the height of the ceiling part 5A of the Glen tank 5 over the full length. Further, the exhaust outlet 89E located at the rear end of the second pipe portion 89 is disposed above the exhaust wall cutter device 68, and is located on the front side of the rear end of the exhaust wall cutter device 68 so as not to protrude from the outer shape of the combine in a plan view. Is arranged.
As shown in FIG. 3, in the auger storage state in which the horizontal conveyance conveyor 35 is supported by the auger receiving base 35 </ b> H, most of the second pipe portion 89 is overlapped with the horizontal conveyance conveyor 35 in a plan view.

  As can be understood from FIGS. 13 and 14 showing the rear end of the second pipe portion 89, the second pipe portion 89 has a relatively small-diameter second inner pipe 89A and most of the length of the second inner pipe 89A. And a second outer tube 89B covering the outer periphery from the outer periphery. The second outer pipe 89B is spaced from the second inner pipe 89A substantially equally over the entire circumference. Although not particularly illustrated, the first tube portion 87 has a similar double tubular configuration.

  The exhaust discharge pipe 86 </ b> A of the engine muffler 86 and the first pipe part 87 are connected in a substantially straight line, and the axis of the second pipe part 89 is 45 ° or less with respect to the axis of the first pipe part 87. Since they intersect at a relatively small angle, the exhaust from the engine muffler 86 flows smoothly through the exhaust pipe XP and does not cause a local temperature rise in the exhaust pipe XP.

  Between the rear end of the 1st pipe part 87 and the 2nd pipe part 89, the cyclic | annular gap | interval for introduce | transducing outside air inside the 2nd inner pipe 89A by the ejector effect based on the negative pressure which generate | occur | produces in the exhaust pipe XP (Second introduction part) is formed. Similarly, between the rear end of the exhaust discharge pipe 86 </ b> A and the first pipe part 87, outside air is introduced into the inner pipe of the first pipe part 87 by an ejector effect based on the negative pressure generated in the exhaust pipe XP. An annular gap (first introduction part) is formed.

  As described above, outside air is sucked into the exhaust pipe XP from the first introduction section and the second introduction section, and the exhaust temperature can be lowered. In particular, the second introduction part is located not in a closed space sandwiched between the threshing device 4 and the glen tank 5, but in a space above the ceiling of the threshing device 4, so that the outside air at a relatively low temperature is used. Is introduced into the second inner pipe 89 </ b> A of the second pipe part 89.

  The first tube portion 87 and the second tube portion 89 are provided with protective covers 87C and 89C, respectively. The protective covers 87C and 89C are formed with a plurality of round holes penetrating in a punching metal shape so as not to prevent the first tube portion 87 and the second tube portion 89 from being cooled by the surrounding air. The brackets welded to the outer peripheral surfaces of the pipe 87B and the second outer pipe 89B are attached with bolts and nuts or the like.

  Each of the protective covers 87 </ b> C and 89 </ b> C has an arc shape in cross section and has a bowl shape as a whole, and covers approximately half of the outer peripheral surfaces of the first tube portion 87 and the second tube portion 89, i.e., the region facing the glen tank 5. It is attached as follows. Therefore, when the operator swings the Glen tank 5 to the maintenance position, the exhaust pipe XP is opened together with the right side wall of the threshing device 4, but the exhaust pipe XP is covered by the protective covers 87C and 89C over almost the entire length. It will be covered. However, the exhaust pipe XP passes through a gap between the threshing device 61 extended in the vertical direction and the right side wall of the threshing device 4, and the protective cover 87C is omitted in a portion corresponding to the back of the threshing device 61. Has been.

The protective covers 87 </ b> C and 89 </ b> C are spaced apart from the outer tube of the first tube portion 87 and the outer peripheral surface of the second outer tube 89 </ b> B of the second tube portion 89. The protective covers 87C and 89C are not limited to the punching metal shape, and may be a mesh shape, for example.
The exhaust pipe XP is supported so as to be generally equidistant from both sides of the grain tank 5 and the threshing device 4. The exhaust pipe XP is supported by the side surface of the threshing device 4 instead of the Glen tank 5 so that the Glen tank 5 can be freely swung between the work position and the maintenance position around the vertical axis X2. . More specifically, the exhaust pipe XP is supported via four stays fixed to the side surface of the threshing device 4.

[Exhaust control cover]
As shown in FIGS. 13 to 16, an exhaust control cover 90 that controls the direction of exhaust discharged from the exhaust pipe XP is provided in the vicinity of the exhaust outlet 89 </ b> E located at the rear end of the second pipe portion 89. Yes. The exhaust control cover 90 has a semicircular shape with a semicircular cross section formed by dividing one side of a cylinder into a plane along the axis, and can be swung with respect to the vicinity of the rear end of the second pipe portion 89. It has a base end portion 90A to be attached and a front end portion 90B extending rearward from the rear end of the base end portion 90A. The proximal end portion 90A has a partial cylindrical shape, while the distal end portion 90B has a partial truncated cone shape in which the radius gradually decreases toward the rear portion.

  A pair of through holes HR and HL are formed near both ends of the base end portion 90 </ b> A of the exhaust control cover 90 in the circumferential direction. The through holes HR and HL have a first through hole HR positioned on the right side when viewed from the rear and a second through hole positioned on the left side when viewed from the rear when the exhaust control cover 90 is disposed in an open position. It consists of holes HL.

  On the other hand, two sets of mounting brackets for mounting the exhaust control cover 90 are provided at the rear end of the second pipe portion 89 by welding or the like. The mounting bracket faces the first bracket pair 91A and 91B facing each other in the direction inclined at an angle of 45 ° counterclockwise with respect to the horizontal when the second pipe portion 89 is viewed from the rear, and the first bracket pair 91A and 91B facing each other in the vertical direction. It consists of two bracket pairs 92A and 92B.

  The first bracket pair 91A, 91B includes a base end portion Mb fixed by welding or the like near the rear ends of the second inner tube 89A and the second outer tube 89B of the second pipe portion 89 and a radially outer side of the base end portion. It consists of a locking part Me extending rearward from the end part. A locking pin 93 protruding radially inward is formed on the locking portion Me of the first bracket 91A located on the upper right side when the second pipe portion 89 is viewed from the rear and the second bracket 92A positioned below. It is attached. On the other hand, the shaft center of the female screw extends along the radial direction in the first bracket 91B located on the lower left side when the second pipe portion 89 is viewed from the rear and the engaging portion Me of the second bracket 92B located above. A nut member 94 is attached.

  FIG. 15 shows a state in which the exhaust control cover 90 is attached to the first bracket pair 91A, 91B. First, the first through hole HR of the exhaust control cover 90 has a diameter on the locking pin 93 of the first bracket 91A. Next, the vicinity of the second through hole HL of the exhaust control cover 90 is overlapped on the radially outer side of the first bracket 91B, and the bolt 95 inserted from the radially outer side is attached to the nut member 94. By screwing, the exhaust control cover 90 is in a state of covering the lower right semicircular region in the opening of the second pipe portion 89. In a state where the bolts 95 are slightly loosened, the exhaust control cover 90 can be swung around the axis connecting the centers of the locking pin 93 of the first bracket 91A and the nut member 94 of the first bracket 91B. Therefore, for example, if the bolt 95 is tightened again in a state where the distal end portion 90B is displaced radially inward of the second pipe portion 89, the exhaust gas is guided upward and the exhaust control cover 90 depends on the swing angle of the exhaust control cover 90. The exhaust direction can be finely controlled as appropriate.

  In FIG. 16 (a), contrary to the state of FIG. 15, first, the second through hole HL of the exhaust control cover 90 is locked to the locking pin 93 of the first bracket 91A in an outer fitting shape from the radially inner side. Next, the vicinity of the first through hole HR of the exhaust control cover 90 is overlapped on the radially outer side of the first bracket 91 </ b> B, and the bolt 95 inserted from the radially outer side is screwed to the nut member 94, whereby the exhaust control cover 90. Is in a state of covering the upper left semicircular region of the opening of the second pipe portion 89.

  FIG. 16B shows that the second through hole HL of the exhaust control cover 90 is engaged with the engaging pin 93 of the lower second bracket 92 </ b> A in an outer fitting shape from the inside in the radial direction. By overlapping the vicinity of the first through hole HR on the radially outer side of the upper second bracket 92 </ b> B and screwing the bolt 95 inserted from the radially outer side to the nut member 94, the exhaust control cover 90 is connected to the second pipe portion 89. The right half-circle region of the opening is covered.

  Similarly, FIG. 16C shows that the first through hole HR of the exhaust control cover 90 is engaged with the engaging pin 93 of the lower second bracket 92A in an outer fitting shape from the radially inner side, and then the exhaust control is performed. By overlapping the vicinity of the second through-hole HL of the cover 90 on the radially outer side of the upper second bracket 92B and screwing the bolt 95 inserted from the radially outer side to the nut member 94, the exhaust control cover 90 is connected to the second pipe. The left side semicircular region of the opening of the portion 89 is covered.

  14 to 16, the first bracket pair 91 </ b> A and 91 </ b> B face each other in a direction inclined at an angle of 45 ° counterclockwise with respect to the horizontal when the second pipe portion 89 is viewed from the rear. The pairs 92A and 92B face each other in the vertical direction, but the angle between the first bracket pair 91A and 91B and the second bracket pair 92A and 92B is not limited to this, and various modifications are possible. For example, the first bracket pair 91A and 91B may face each other in the horizontal direction when viewed from behind, and the second bracket pair 92A and 92B may face each other in the vertical direction.

[Unloader lower cover structure]
As shown in FIGS. 17 to 20, a metal side cover 5 </ b> B is provided behind the Glen tank 5, and covers the vicinity of the unloader 6 from the right side and the rear, but at the lowermost end of the unloader 6. The vicinity of the elbow-shaped carry-out case 32 is covered from the right side and the rear by a rubber hump 96 attached to the lower end of the side cover 5B.

As shown in FIG. 20 (b), the hump 96 in a state before attachment has a generally rectangular plate shape, and four main attachment holes 96H are formed in the upper edge portion of the hump 96, and in the vicinity of the front lower end. One auxiliary long hole 96L is formed.
Further, a rod-shaped mounting pin 5P extends forward from a stay 97 fixed to a part of the body frame 2F, and there are four corresponding to the four main mounting holes of the hump 96 near the lower end of the side cover 5B. A mounting hole is formed.

  As understood from FIG. 20A, when attaching the hump 96, first, the attachment pin 5P is inserted into the auxiliary elongated hole 96L of the hump 96, and then the rear end portion of the hump 96 is pulled backward. The upper side portion of the hump 96 is arranged inside the lower end of the side cover 5B, and is fixed with bolts 98 and nuts inserted through the four main mounting holes 96H of the hump 96 and the four mounting holes on the side cover 5B side.

  The upper edge of the hump 96 is inclined forward so as to approach the lower edge gradually from the main upper edge 96A and the main upper edge 96A near the front extending generally parallel to the lower edge. And an auxiliary upper edge portion 96B. In the state before attachment, the rearmost main attachment hole 96H is disposed near the upper end of the rear end of the inclined auxiliary upper edge portion 96B. On the other hand, all of the four attachment holes formed near the lower end of the side cover 5B are generally horizontally arranged. Therefore, when the rearmost main mounting hole 96H of the hump 96 is aligned with the corresponding mounting hole near the lower end of the side cover 5B and fixed with bolts 98, nuts, etc., the hump 96 has a corner near the right rear end in plan view. The lower end of the hump 96 is attached to the inner side (closer to the unloader 6).

[Another embodiment]
<1> The tension of the transmission belt 47 may be increased by pushing the upper side of the transmission belt 47 downward by the tension roller 48.

<2> In the present invention, the transmission of power from the engine E to the bottom screw 31S of the discharge conveyor 31 is not transmitted by the transmission belt 47 wound around the input pulley 46 that rotates integrally with the bottom screw 31S, but the power of the engine E. The present invention can also be applied to a combine in a form in which the laterally output final output shaft and the bottom screw 31S that are rotationally driven are coupled by a set of bevel gears.
In this embodiment, a spline structure that can be engaged and disengaged in the lateral direction is provided in the middle of the lateral output shaft in the lateral direction, so that the operation of removing the transmission belt 47 from the input pulley 46 is not required. 5 can be switched to the maintenance position.
In this type of combine, the discharge clutch according to the present invention is provided on a transmission belt that connects an output pulley (an example of a drive pulley) that rotates integrally with the output shaft of the engine E and an input pulley that rotates integrally with the final output shaft. Just do it.

<3> The operation rod 53 is divided into an upper short operation rod 53 and a lower long operation rod 53, and the upper short operation rod 53 is locked to the tip of the operation arm 20, and the short operation rod 53 and the lower operation rod 53 are It is also possible to implement a configuration in which a coil spring 54 and a turnbuckle 55 are interposed in series between the longest operating rod 53. The upper and lower order of the coil spring 54 and the turnbuckle 55 in this case is not particularly limited.

  A driver's seat and an engine are arranged at the front position of the traveling machine body, a grain tank for storing the grain is arranged behind them, an unloader for discharging the grain from the grain tank, and the engine is transmitted to the unloader. A discharge clutch for turning on and off the drive force generated, and the discharge clutch is wound between a drive pulley that is rotated by an output shaft of an engine and an input pulley to the unloader, and the transmission belt The present invention can be used as a combine technology including a tension roller for applying tension, and can also be used for an ordinary combine.

2 Traveling machine body 5 Glen tank 6 Unloader 12 Driver's seat 18 Discharge lever (on / off operation member)
20 Operation arm (on / off operation member)
45 Intermediate output pulley (drive pulley)
46 Input pulley 47 Transmission belt 48 Tension roller 53 Operation rod 53a First rod (longest operation rod)
53b Second rod 54 coil spring (tensile coil spring)
55 Turnbuckle (length adjustment means)
C Discharge clutch E Engine

Claims (3)

A driver's seat and an engine are arranged at the front position of the traveling machine body, a grain tank for storing the grain is arranged behind them, an unloader for discharging the grain from the grain tank, and the engine is transmitted to the unloader. And a discharge clutch for turning on and off the driving force
The discharge clutch is a combine provided with a transmission belt wound between a drive pulley that is rotated by the engine and an input pulley to the unloader, and a tension roller that applies tension to the transmission belt,
At least one operation rod and a tension coil spring are interposed in series between an on / off operation member disposed in the vicinity of the driver seat and the tension roller, and the operation rod has the longest tension coil spring. Combine that is located above.   The on / off operation member includes an operation arm that is swing-operated by a discharge lever disposed in the driver seat, and the tension coil spring is locked between an action portion of the operation arm and an upper end of the operation rod. The combine according to claim 1.   A length adjusting means for changing the length of the operating rod is further interposed between the turning operation member and the tension roller, and the length adjusting means and the tension coil spring are the longest operating rod. The combine of Claim 1 or 2 arrange | positioned upwards.

Images