JP2002218829A - Transmission structure for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission structure for a combine harvester having the high-speed transmission mechanism 60 making a power transmission from the output unit 52a of a traveling variable-speed gear 52 to a reaping counter shaft 54 and the low-speed transmission mechanism 65 making a power transmission from a threshing counter shaft 57 to the reaping counter shaft 54 and designed to undergo power transmission to the reaping counter shaft 54 by the mechanism 60 is the output speed of the traveling variable-speed gear 52 is higher than a set speed or by the mechanism if otherwise, ensuring the reaping counter shaft 54 to be put to a halt in an easily operational manner during making a moving travel of the combine harvester. SOLUTION: This transmission structure for a combine harvester has such a scheme that an upper side reaping clutch 70 is set up on the high-speed side transmission mechanism 60, and a threshing clutch 56 and the upper side reaping clutch 70 are made to interlock with each other so as to let the upper side reaping clutch 70 off on letting the threshing clutch 56 off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing counter shaft interlocked with an output shaft of an engine via a threshing clutch, a threshing drive mechanism for transmitting the rotating power of the threshing counter shaft to a threshing drive shaft, and a traveling speed changer. A cutting counter shaft interlocked with a high speed side transmission mechanism having a one-way rotating clutch at an output portion of the device, and a cutting clutch for interlocking the cutting counter shaft with a cutting unit drive shaft, wherein the threshing counter shaft is a cutting counter. A one-way rotating clutch interlocked with the shaft, and when the output speed of the traveling transmission is higher than a set speed, the transmission is transmitted from the traveling transmission to the mowing counter shaft by the high-speed side transmission mechanism, and the traveling transmission is driven. If the output speed of the gear is equal to or lower than the set speed, the low-speed transmission mechanism that transmits from the threshing counter shaft to the mowing counter shaft in preference to the high-speed transmission mechanism. Regarding transmission structure of are provided combine.

[0002]

2. Description of the Related Art When a traveling transmission is operated at a speed higher than a set speed, a driving force from an output portion of the traveling transmission is transmitted to a cutting counter shaft by a high-speed transmission mechanism and a harvesting counter is operated. When the reaping unit is driven by being transmitted from the shaft to the reaping unit drive shaft and the traveling transmission is operated to a low speed side below the set speed, the driving of the threshing counter shaft, which is power transmitted from the engine via a threshing clutch, is performed. The mowing unit is driven by transmitting the force to the mowing counter shaft by the low-speed transmission mechanism and transmitting the power from the mowing counter shaft to the mowing unit drive shaft.

[0003] In other words, when the operation is performed while moving the traveling transmission at a higher speed than the set speed, that is, when the operation is performed while traveling at a high speed, if the traveling speed is changed, the driving speed of the reaper increases as the traveling speed increases. Even if the driving speed of the mowing part changes, the running speed changes and the culm introduction speed of the mowing part changes, it is possible to work while suppressing pushing down of the planted cereal stem and generation of driving noise. When the operation is performed while the traveling transmission is set at a speed equal to or lower than the set speed, that is, when the operation is performed while traveling at a low speed, the driving speed of the mowing unit is maintained at an appropriate driving speed even if the traveling speed decreases or changes, and It is possible to work while suppressing the occurrence of pretreatment defects such as hard cutting of the culm.

Conventionally, this type of combine has been provided with a clutch which cuts off the transmission from the output of the traveling transmission to the cutting counter shaft, since the transmission to the cutting section can be cut off by operating the cutting clutch. Did not.

[0005]

The traveling travel is performed with the mowing unit and the threshing machine stopped, and conventionally, when the traveling travel is performed, even if the cutting clutch or the threshing clutch is disengaged, the traveling travel is performed. Power is transmitted from the output of the transmission to the mowing counter shaft, and the mowing counter shaft remains rotated. The object of the present invention is, when traveling,
Another object of the present invention is to provide a combine transmission structure in which the mowing counter shaft can be easily stopped.

[0006]

[Means for Solving the Problems]

[0007] The structure, operation and effect of the invention according to claim 1 are as follows.

[Structure] A threshing counter shaft interlocked with an output shaft of an engine via a threshing clutch, a threshing drive mechanism for transmitting the rotating power of the threshing counter shaft to a threshing drive shaft, and an output portion of a traveling transmission. A cutting counter shaft interlocked via a high-speed transmission mechanism having a one-way rotating clutch, and a cutting clutch for interlocking the cutting counter shaft with a cutting unit drive shaft, wherein the threshing counter shaft is interlocked with the cutting counter shaft. If the output speed of the traveling transmission is higher than the set speed, the transmission is transmitted from the traveling transmission to the mowing counter shaft by the high-speed transmission mechanism, and the output speed of the traveling transmission is set. If the speed is equal to or less than the speed, a low-speed side transmission mechanism for transmitting power from the threshing counter shaft to the mowing counter shaft in preference to the high-speed side transmission mechanism is provided. In the power transmission structure of the vine, the high-speed transmission mechanism is provided with a high-side mowing clutch that cuts off transmission to the mowing counter shaft, and when the threshing clutch is operated to the off-side, the upper-side mowing clutch is switched to the off-side, The threshing clutch and the upper reaping clutch are linked so that the upper reaping clutch is switched to the inward side when the threshing clutch is operated to the entrance side.

[Operation] When the threshing clutch is turned off, the transmission from the engine to the threshing counter shaft is turned off, and the transmission from the threshing counter shaft to the cutting counter shaft is turned off. At this time, the upper side mowing clutch is also turned off for interlocking with the threshing clutch, and the transmission from the traveling transmission to the mowing counter shaft is turned off, so that the power transmission from the mowing counter shaft to the mowing unit drive shaft is performed. The cutting section is cut off and the driving of the cutting section is stopped, and the cutting counter shaft is stopped without being transmitted from the traveling transmission or the threshing counter shaft.

[Effect] Therefore, for example, during traveling traveling, the mowing counter shaft is also stopped, and the vehicle can travel in a quiet state in which the generation of driving noise is suppressed. In addition, the cutting operation of the threshing clutch can also disengage the upper-side mowing clutch at a stroke, so that the mowing counter shaft can be easily stopped, which is advantageous in terms of operation.

The structure, operation and effect of the invention according to claim 2 are as follows.

[Structure] A threshing counter shaft interlocked with an output shaft of an engine via a threshing clutch, a threshing drive mechanism for transmitting the rotating power of the threshing counter shaft to a threshing drive shaft, and an output portion of a traveling transmission. A cutting counter shaft interlocked via a high-speed transmission mechanism having a one-way rotating clutch, and a cutting clutch for interlocking the cutting counter shaft with a cutting unit drive shaft, wherein the threshing counter shaft is interlocked with the cutting counter shaft. If the output speed of the traveling transmission is higher than the set speed, the transmission is transmitted from the traveling transmission to the mowing counter shaft by the high-speed transmission mechanism, and the output speed of the traveling transmission is set. If the speed is equal to or less than the speed, a low-speed side transmission mechanism for transmitting power from the threshing counter shaft to the mowing counter shaft in preference to the high-speed side transmission mechanism is provided. In the power transmission structure of the vine, the high-speed side transmission mechanism is provided with a high-side reaping clutch that cuts off transmission to a reaping counter shaft. When the reaping clutch is operated to the entrance side, the upper reaping clutch is switched to the entrance side,
The reaping clutch and the better side reaping clutch are linked.

[Operation] When the cutting clutch is operated to be turned off, the transmission from the cutting counter shaft to the cutting unit drive shaft is turned off, and the cutting unit is stopped. At this time, the upper-side mowing clutch is also disengaged due to the interlocking with the mowing clutch, and the transmission from the traveling transmission to the mowing counter shaft is turned off. Further, when the threshing clutch is operated to be turned off, the transmission from the engine to the threshing counter shaft is turned off, and the transmission from the threshing counter shaft to the mowing counter shaft is turned off, and the mowing counter shaft is also threshed from the traveling transmission. It stops without being transmitted from the counter shaft.

[Effect] Therefore, for example, during traveling, the mowing counter shaft is also stopped, and the vehicle can run in a quiet state in which the generation of driving noise is suppressed. In addition, the cutting operation of the harvesting clutch has also been advantageous in terms of operation so that the upper-side cutting clutch can be instantaneously turned off so that the cutting counter shaft can be easily stopped.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
1 and a cutting unit 10 having a clipper-shaped cutting device 12
Is connected to a support portion 4 located at the front end of a body frame 3 of a self-propelled body including a crawler type traveling device 1 and a driving cabin 2 by a lift cylinder 5 so as to be able to move up and down around an axis P. A threshing machine 20 for threshing the harvested culm from 10 and a grain tank 6 for storing grains from the threshing machine 20 are provided on the self-propelled body,
A combine is configured. This combine harvests soybeans, buckwheat, wheat and the like, and is configured in detail as follows.

As shown in FIG. 1, a mowing unit 10 has a feeder 13 whose upper end is rotatably connected to the support 4 of the self-propelled body around the axis P, and is located inside the feeder 13. Feeder conveyor 14, a beater 15 located on the transport end side of the feeder conveyor 14, a platform 16 having a rear end connected to the front end of the feeder 13, and a platform auger 17 located on the upper surface side of the platform 16. A cutting and conveying device comprising a cutting culm, a cutting device 12 positioned at a front end of the platform 16 and a tip end of a reel support arm 18 extending from an upper portion of a front end of the feeder 13. The rotating reel 1 freely supported
1.

That is, the tip side of the planted grain culm is moved to the platform 1 by the tine 11a of the rotating rotating reel 11.
6, the root of the planted grain culm is cut off by the reaper 12 while being raked upward. The whole of the cut culm from the cutting device 12 from the base end to the tip is conveyed along the upper surface of the platform 16 by the platform auger 17 to the front of the front end side of the feeder 13, and the platform auger 17 is provided. It is fed to the front end side of the feeder 13 by the scraping finger 17a. The whole cut culm from the platform auger 17 is conveyed to the rear end side of the feeder 13 along the conveying surface of the feeder 13 by the feeder conveyor 14, and the whole cut culm from the feeder conveyer 14 is rearwardly moved by the beater 15. And is fed into the body of the threshing machine 20.

As shown in FIG. 1, the threshing machine 20 includes a supply belt 21 composed of an endless rotating belt whose transport start end is located below the beater 15 of the mowing section 10, and a transport end side of the supply belt 21. Roller 22 located above
And a threshing unit 25 having two handling cylinders 26 and 27 located in the longitudinal direction of the machine behind the supply belt 21.
A threshing product discharge unit 30 having a rotating body 31 located near the rear side of the second handling cylinder 27 on the rear side of the machine of the threshing unit 25, and a drive swing located below the threshing unit 25 And a sorting unit 40 having a swingable sorting device 41.

The supply belt 21 receives the whole of the cut culm sent from the beater 15 of the cutting unit 10 from the base side end to the ear tip at the conveyance start end side, conveys the rearward of the machine body, and cooperates with the roller 22. By operation, it is supplied to the front side of the first handling cylinder 26.

The threshing unit 25 is configured as shown in FIG. That is, the whole of the cut culm from the supply belt 21 from the base end to the tip of the cut cereal stem is transferred to the two handling cylinders 26,
27, which is located on the front side of the fuselage and is introduced above the first handling cylinder 26 by the first handling cylinder 26 which rotates in the direction of the arrow around the horizontal axis of the aircraft, and is placed above the first handling cylinder 26. A plurality of resistors 28 provided on a resistance plate positioned along the circumferential direction of the first handling cylinder 26, and the first handling cylinder 2
6 and the threshing grains are processed by the first handling cylinder 26.
Is dropped onto the rocking and sorting apparatus 41 from between the members constituting the same, and the other threshing products are removed from the first handling cylinder 26.
Thus, the air is supplied to the front side of the second handling cylinder 27 on the rear side of the body.
The thresh-processed material from the first handling cylinder 26 is introduced below the second handling cylinder 27 by a second handling cylinder 27 that rotates in the direction of the arrow around the horizontal axis of the machine body. The rocking sorting is carried out by a receiving net 29 located along the outer shell 27 and the teeth of the second handling cylinder 27, and the rocking sorting is performed between the vertical and horizontal crosspieces forming the receiving net 27. It is dropped into the device 41 and other threshing products such as threshing and culms are discharged to the rear of the machine body from the dust discharging portion 25a located behind the second handling drum 27.

The threshing material discharge unit 30 includes the rotating body 31 located on the rear side of the threshing unit 25 behind the dust discharging unit 25a,
The guide member 32 is located below the rotating body 31.

As shown in FIG. 2 and the like, the rotating body 31 includes a rotating body that rotates in a direction indicated by an arrow about a horizontal axis of the machine body, and both a circumferential direction around the rotating body and a rotating shaft center direction. And a blade body 31a formed of a plate whose thickness direction extends along the axis of rotation of the rotating body 31. The processing object discharged from the dust discharging portion 25a is In addition to the loosening treatment by the body 31a, the threshing machine is released so as to fly toward the discharge port 23 located behind the rocking and sorting device 41.

As shown in FIG. 3 and the like, the guide member 32
The mounting member 33 is supported by the rear end of the receiving net 29 and includes a guide rod 33a made of a round bar that extends rearward from the body at a plurality of locations in the body lateral direction.
As a result, the guide member 32 causes the processed material, which has been blown toward the outlet 23 by the rotating body 31, to the outlet 23.
, And further, the kernels coming out of the processed material that has been loosened by the rotating body 31 are subjected to the rocking sorter 4.
A grain passage 34 to be dropped to 1 is provided between the guide rods 34a.

The selection section 40 is configured as shown in FIG. That is, the rocking and sorting apparatus including the Glen pan 41a located below the first handling cylinder 26, the chaff sheave 41b located on the lower transport side of the Glen pan 41a, and the straw rack 41c located on the lower transport side of the chaff sheave 41b. 41, a sorting conveyor 42 which receives the processed material falling from the rear end side of the swing sorting device 41 and sorts out the grains and dust by discharging the dust while flowing down the grains; The first handling drum 26, the receiving net 29, and the guide member 32 are generated by a sorting wind directed to the rear of the machine supplied by the Karamin 43 located below the front end of the device 41.
The threshing products such as threshing grains falling from the plant are sorted into grains and dust. Grains from the swinging sorter 41 and the sorting conveyor 42 are dropped onto the first screw conveyor 44,
A lifting conveyor 7 which carries out the grain to the grain tank 6 by carrying it out to the lateral outside of the threshing machine by a number screw conveyor 44.
Is supplied to the transport start end. The second processed material from the swinging sorter 41 and the sorting conveyor 42 is transferred to the second screw conveyor 4
5 and carried out to the lateral outside of the threshing machine by the second screw conveyor 45, and the second processed product is threshed in the threshing unit 2
5 is fed to the starting end of the conveyer 8 which is reduced to 5.
Dust from the swinging sorting device 41 and the sorting conveyor 42 is discharged to the outside of the threshing machine through the discharge port 23 located at the rear of the threshing machine together with the sorting wind.

As a result, the threshing machine 20 has a
The whole of the culm from the root to the tip of the culm is supplied to the first handling cylinder 26 of the threshing unit 25 by the supply belt 21 and the roller 22, and the handling action by the first handling cylinder 26 and the resistor 28 is performed. The threshing process is performed by the handling operation of the second handling cylinder 27 and the receiving net 29, and the threshing product is supplied to the sorting unit 40 and the threshing discharge unit 30, and the rocking sorting device 41 and the sorting conveyor 42 By the specific gravity, the curling by the rotating body 31 and the wind sorting by the sorting wind, to separate the grains into grains and dust, transport the grains toward the grain tank 6 by the first screw conveyor 44, and thresh the dust. The material is discharged from the discharge port 23 to the outside by the discharge action of the rotating body 31 and the guide member 32 of the material discharge section 30 and the discharge action of the swinging sorting device 41 of the sorting section 40 and the sorting wind.

The receiving net 29 of the threshing unit 25 is detachably attached to the threshing machine at the front end and the rear end.
That is, when harvesting soybeans and soba, the first handling cylinder 26
From the second handling cylinder 27 and the receiving net 29 so as to avoid excessive handling and processing.
For easy removal and operation.

A traveling transmission case 50 for driving the traveling device 1 by transmitting rotational power to a pair of left and right crawler driving wheels 1a of the traveling device 1 is provided at the front end of the self-propelled body, and a rotary reel of the cutting unit 10 is provided. 11, reaping device 1
2, Platform Auger 17, Feeder Conveyor 1
4. A single mowing portion drive shaft 19 for driving each movable portion of the mowing portion 10 by transmitting a rotating power to a respective input portion of the beater 15 via a transmission belt or a transmission chain is provided in the middle of the feeder 13; Supply belt 2 of threshing machine 20
1, a roller 22, a first handling cylinder 26, a second handling cylinder 27, a rotating body 31, a swing sorting device 41, a sorting conveyor 42, a first screw conveyor 44, a second transmission belt 45 One threshing drive shaft 46 for driving each movable part of the threshing machine 20 by transmitting the rotating power through the threshing machine 20 is provided on one side of the threshing machine body and is located below the driving seat 2a of the self-propelled machine body. The output of the engine 51 is transmitted to the traveling mission case 50,
9. The power is transmitted to the threshing drive shaft 46 by a transmission structure shown in FIG.

That is, the traveling transmission case 5
A traveling in which an output shaft is interlocked with an input portion of a traveling mission positioned inside the transmission case 0, and the traveling device 1 is driven by a hydrostatic continuously variable transmission attached to an upper portion of the transmission case 50 so that the traveling device 1 can be freely shifted. A transmission device 52 for
An output shaft 51a of the engine 51 is connected to a rotation shaft type input portion 52a of the traveling transmission 52 by a transmission belt 53.
A mowing counter shaft, one end of which is interlocked with the output portion 52b by a high-speed side transmission mechanism 60 including a belt pulley 61 attached to a rotary shaft type output portion 52b of the traveling transmission 52. 54 is provided on the supporting portion 4 of the self-propelled body so as to be rotatable around the same axis as the axis P, and the other end of the cutting counter shaft 54 is connected via a cutting clutch 55 composed of a belt tension clutch. In this way, it is linked to the mowing unit drive shaft 19. A thrust counter shaft 57 is provided in the vicinity of the body of the threshing machine 20 in such a manner that one end thereof is interlocked with the output shaft 51a of the engine 51 via a threshing clutch 56 formed of a belt tension clutch. The other end of the shaft 57 is linked to the threshing drive shaft 46 by a threshing drive mechanism 58 having a transmission belt wound around the threshing counter shaft 57. The threshing countershaft 5 is provided by a low-speed side transmission mechanism 65 having a transmission chain 66 wound around the end of the threshing countershaft 57 that is linked to the threshing drive shaft 46.
7 is transmitted to the mowing counter shaft 54.

The high-speed side interlocking mechanism 60 includes a one-way rotating clutch 62 in which an input-side rotating body is integrally rotatably connected to the output portion 52b of the traveling transmission 52, and an output of the one-way rotating clutch 62. The belt pulley 61 that is integrally rotatably connected to the side rotating body, the transmission belt 63 that is wound around the transmission belt pulley 61, and the transmission belt pulley 61 that is wound and the reaper counter shaft 54 It is constituted by a belt pulley 64 which is integrally rotatably connected. The low-speed side interlocking mechanism 65
Is a one-way rotary clutch 67 in which an output-side rotary body is rotatably connected to the mowing counter shaft 54, and a chain sprocket 68 that is integrally rotatably connected to the input-side rotary body of the one-rotation direction clutch 67. And the transmission chain 66 wound around the sprocket 68, and the chain sprocket 69 wound around the transmission chain 66 and integrally and rotatably connected to the threshing counter shaft 57. Threshing counter shaft 57
When the threshing machine 20 is rotating at the set threshing speed set to drive the threshing machine 20 at a rotation speed appropriate for threshing, the rotation speed of the output unit 52b of the traveling transmission 52 causes the mowing unit 10 to rotate When the speed is higher than the set speed for cutting which is set to operate at the minimum speed required for the cutting process, due to the action of the two-way rotating clutches 62 and 67 and the transmission ratio of the transmission belt 63 and the transmission chain 66, The mowing counter shaft 54 is driven by the rotating power from the output unit 52b of the traveling transmission 52 in preference to the rotating power from the threshing counter shaft 57, and the output unit 5 of the traveling transmission 52 is driven.
When the rotation speed of 2b becomes lower than the set speed, the mowing counter shaft 54 is moved from the traveling transmission 52 by the action of the two-way rotation clutches 62 and 67 and the transmission ratio of the transmission belt 63 and the transmission chain 66. And the transmission ratio of the two-way rotation clutches 62 and 67, the transmission ratio of the transmission belt 63, and the transmission ratio of the transmission chain 66 so as to be driven by the rotation power from the threshing counter shaft 57 prior to the rotation power of the threshing counter shaft 57. The size relationship is set. As a result, the low-speed side transmission mechanism 65 is connected to the output portion 52b of the traveling transmission 52.
Is higher than the set speed, the cutting counter shaft 54 is rotated by the driving force from the traveling transmission 52, and this turning power is transmitted to the cutting unit drive shaft 19 via the cutting clutch 55. When the rotation speed of the output portion 52b of the traveling transmission 52 is lower than the set speed, the cutting counter shaft 54 is moved to the traveling transmission 5.
2 is rotated by the driving force from the threshing counter shaft 57 in preference to the driving force from
5 to the mowing unit drive shaft 19.

As shown in FIG.
The transmission belt 63 and the tension arm 63a acting on the transmission belt 63 constitute a superior reaping clutch 70. The transmission from the traveling transmission 52 to the reaping counter shaft 54 is turned on / off by the superior reaping clutch 70. I can do it. That is, the tension arm 63a is swung about a shaft 63b whose base end is rotatably connected to the arm support member,
When the tension roller 63c attached to the leading end is moved to the entering position where the tension roller 63c ascends and swings so as to press the power transmission belt 63, the power transmission belt 63 is in a transmission tension state, and the upper side reaping clutch 70 is driven by the traveling transmission 52. Output unit 5
The clutch is engaged so as to transmit the turning power of 2b to the mowing counter shaft 54. When the tension arm 63a is set at the cutting position where the tension roller 63c is lowered and swung so as to release the pressing action on the transmission belt 63,
The transmission belt 63 is loosened, and the upper cutting clutch 70 is disengaged so that the transmission from the output section 52b to the cutting counter shaft 54 is cut off.

As shown in FIG. 5, the threshing clutch 56
A threshing clutch lever 80 configured to be interlocked with a tension arm 56a as an operation unit by an interlocking mechanism 72 having a spring 73 is provided in the cabin of the operation unit, and the threshing clutch lever 80 is located on the back side of the lever guide 81. Arm as an operating part of the upper side reaping clutch 70 by an interlocking mechanism 82 having a swinging link 83 whose base end side is integrally and rotatably connected to a lever support shaft 74 which is swingably attached to a supporting member to be rotated. 63
By interlocking a with the threshing clutch lever 80,
When the threshing clutch 56 is switched, the upper side mowing clutch 70 is switched to the same side as the switching side of the threshing clutch 56 in conjunction therewith.
And the upper side reaping clutch 70 are interlocked.

That is, the interlocking mechanism 72, which interlocks the tension arm 56a of the threshing clutch 56 with the threshing clutch lever 80, connects the lever support shaft 74 to the lever support shaft 74 such that the base end thereof can rotate integrally. Swing link 83, a bent link 84 having one end rotatably connected to the free end side of the swing link 83, and the other end of the bent link 84 connected to the tension arm 56 a. And the spring 73. The interlocking mechanism 8 that interlocks the tension arm 63a of the upper side mowing clutch 70 with the threshing clutch lever 80.
2, the lever support shaft 74, the bending link 84,
The bending link 84 is constituted by a spring 85 connected to the tension arm 63a.

Thus, the threshing clutch lever 80 is moved along the guide groove of the lever guide 81 so that the lever support shaft 7
When the rocking operation is performed in the longitudinal direction of the body around the axis of No. 4 to reach the entry position located on the front end side of the guide groove, the rocking link 83
Swings upward to raise the bending link 84,
As a result, the spring 73 is pulled and the tension arm 56a is raised to the raised position, whereby the threshing clutch 56 is connected to the engine output shaft 51a.
The clutch is engaged so as to transmit the turning power of the threshing counter shaft 57. At this time, also in the upper reaping clutch 70, the spring 85 is pulled by the swing link 83 to raise the tension arm 63a to the raised position, whereby the upper reaping clutch 70 is engaged. Further, at this time, since the threshing clutch lever 80 is held at the engagement position by the action of the bending link 84 and the elastic restoring force of both springs 73 and 85, both the threshing clutch 56 and the upper-side reaping clutch 70 can be held in the engaged state. .

The threshing clutch lever 80 is connected to the lever guide 8
When it is operated to the cutting position located on the rear end side of the first guide groove, the swing link 83 is operated to swing downward to lower the bending link 84, whereby the spring 73 is loosened and the tension arm 56a is operated. The threshing clutch 56 is disengaged so as to cut off the power transmission from the engine output shaft 51a to the threshing counter shaft 57 by lowering the threshing to the lower off position. At this time, also in the upper reaping clutch 70, the spring 85 is loosened and the tension arm 63a is lowered to the lower off position, whereby the upper reaping clutch 70 is disengaged.

That is, when performing the work, the traveling transmission 52 is switched to the forward side by a shift lever (not shown) provided in the operating section, and the threshing clutch lever 80 is operated to the ON position to set the threshing clutch 56 and The upper side cutting clutch 70 is turned on, and the cutting clutch 55 is turned on by a cutting clutch lever (not shown) provided in the operating unit. Then, the traveling transmission 52 is switched to the engine 51.
The traveling device 1 is driven forward by a driving mission located inside the traveling mission case 50 by the driving force from the vehicle, so that the aircraft travels forward. Then, while the output portion 52b of the traveling transmission 52 rotates, the rotation output of the engine 51 is transmitted to the threshing counter shaft 57 by the threshing clutch 56, and the traveling transmission 52
Is operated so that the output speed of the output unit 52b becomes higher than the set speed, and the vehicle travels with the traveling speed V higher than the speed Va, the output unit 52 of the traveling transmission 52 is operated.
b is transmitted to the mowing counter shaft 54 by the high-speed transmission mechanism 60, and the rotating power of the mowing counter shaft 54 is transmitted to the mowing portion drive shaft 19 by the mowing clutch 55, and the traveling transmission 52 is output to the output portion 52 b. The operation speed is controlled so that the output speed of the
When the vehicle is run at a low speed equal to or lower than the speed Va, the rotating power of the threshing counter shaft 57 is transmitted to the cutting counter shaft 54 by the low-speed side transmission mechanism 65, and the rotating power of the cutting counter shaft 54 is cut by the cutting clutch 55. It is transmitted to the unit drive shaft 19. Accordingly, in both the case where the vehicle travels with the traveling speed V higher than the speed Va and the case where the vehicle travels with the traveling speed V being lower than or equal to the speed Va, each movable unit such as the reaper 12 and the feed conveyor 14 of the reaper 10 is used. The mowing unit 10 is driven by the driving force from the mowing unit drive shaft 19, and the mowing unit 10 trims the planted grain culm and supplies the harvested grain culm to the threshing machine 20. Then, the turning power of the threshing counter shaft 57 is transmitted to the threshing drive shaft 46 by the threshing drive mechanism 58, and the two handling cylinders 26,
The movable parts such as 27 and the rocking sorter 41 are threshing drive shafts 4
The threshing machine 20 is set as necessary for threshing and sorting processing in both cases where the threshing machine is driven by the driving force from No. 6 and runs at a speed higher than the running speed Va and runs at a low speed equal to or lower than the running speed Va. Driven at the set speed for threshing, the threshed culm from the reaping unit 10 is threshed and the thresh-processed material is sorted out.

When the vehicle is traveling at a speed higher than the traveling speed Va, the speed of the traveling transmission 52 is changed to change the traveling speed V. As a result, the rotation speed of the output portion 52b of the traveling transmission 52 changes, and the mowing counter changes. The rotation speed of the shaft 54 changes, and the rotation speed transmitted to the mowing unit drive shaft 19 changes. Thus, as shown in FIG. 6, when the traveling speed V is changed, the driving speed Vk of the reaper 10 changes in conjunction with the change. That is, the driving speed Vk of the mowing unit 10 changes so as to increase as the traveling speed increases. When traveling at a low speed lower than the traveling speed Va, the threshing counter shaft 57
Is transmitted to the mowing counter shaft 54 by the low-speed side transmission mechanism 65, and the rotating power of the mowing counter shaft 54 is transmitted to the mowing portion drive shaft 19. As a result, FIG.
As shown in (5), even if the traveling speed V changes slowly or changes, the driving speed Vk of the cutting unit 10 is maintained at a driving speed Vka appropriate for the cutting processing of the grain stalk.

When traveling or the like, the threshing clutch lever 80 is operated to the disengagement position to switch the threshing clutch 56 and the upper side cutting clutch 70 to the off state. Then, power is not transmitted from the output portion 52b of the traveling transmission 52 or the threshing counter shaft 57 to the mowing counter shaft 54, and the mowing portion 10 and the mowing counter shaft 54 can be stopped.

[Another Embodiment] FIG. 7 shows a part of a transmission structure of a combine having another embodiment. In this transmission structure, a tension arm 55a as an operation part of the cutting clutch 55 is used. A mowing clutch lever 100 configured to be interlocked by an interlocking mechanism 90 having a spring 91 is provided in the cabin of the operating section, and the mowing clutch lever 100 is swingably attached to a support member located on the back side of the lever guide 81. A tension arm 63a as an operating portion of the upper side reaping clutch 70 is interlocked with the reaping clutch lever 100 by an interlocking mechanism 82 having a swing link 83 whose base end side is integrally and rotatably connected to a lever support shaft 92 that is being driven. Thus, when the cutting clutch 55 is switched, the upper side cutting clutch is interlocked with the switching operation. Clutch 5 mowing to be switched to the same side as the switched side of the clutch 55 Chi 70 Cutting
5 and the upper side mowing clutch 70 are interlocked.

That is, the interlocking mechanism 90 for interlocking the tension arm 55a of the mowing clutch 55 with the mowing clutch lever 100 includes the lever support shaft 92,
A swing link 93 whose base end is rotatably connected to the lever support shaft 92 integrally; a bending link 94 whose one end is rotatably connected to the free end of the swing link 93; An operation cable 95 in which one end of the inner wire is connected to the other end of the bending link 94;
5 is connected to the other end of the inner wire, and the swing link 96 is connected to the tension arm 55a.
And the above-mentioned spring 91 connected to the spring. Tension arm 6 of the upper side mowing clutch 70
The interlocking mechanism 82 for interlocking the 3a with the cutting clutch lever 100 has the same configuration as the interlocking mechanism 82 for interlocking the tension arm 63a of the upper cutting clutch 70 with the threshing clutch lever 80.

Thus, the cutting clutch lever 100
Is moved along the guide groove of the lever guide 81 around the axis of the lever support shaft 92 in the fore-and-aft direction of the fuselage to reach the entry position located on the front end side of the guide groove. And the inner cable of the operation cable 95 is pulled, and the tension arm 55a is lowered to the lowering position through the spring 91, whereby the cutting clutch 55 is cut. The clutch is engaged so as to transmit the rotating power of the counter shaft 54 to the mowing unit drive shaft 19. At this time, also in the upper side reaping clutch 70, the swinging link 83 is operated to swing upward and the bending link 84 is pulled up, whereby the spring 85 is pulled and the tension arm 63a is pulled.
Is lifted to the ascending position, so that the upper side mowing clutch 70 is engaged. Further, at this time, the cutting clutch lever 100 is moved to the bending link 93,
94 and the elastic restoring force of both springs 85 and 91, the mowing clutch 5
5 and the better side mowing clutch 70 can be held in the clutch.

When the mowing clutch lever 100 is operated to the cutting position located at the rear end side of the guide groove of the lever guide 81, the swing link 93 swings downward to lower the bending link 94, whereby the bending link 94 is lowered. Operation cable 95
When the inner cable is loosened and the tension arm 55a is turned up to the raised off position by the spring 97, the cutting clutch 55 is disengaged so that the power transmission from the cutting counter shaft 54 to the cutting unit drive shaft 19 is cut off. become. At this time, also in the upper side mowing clutch 70, the swing link 83 is operated to swing downward to lower the bending link 84, whereby the spring 85 is loosened and the tension arm 63a is lowered to the lower cutting position. , The upper reaping clutch 70 is disengaged.

That is, when performing work, the threshing clutch 5
6 is turned on by a threshing clutch lever (not shown) provided in the operation section so that the rotation output of the engine 51 is transmitted to the threshing counter shaft 57, and the reaping clutch lever 10
By operating 0 to the on position, the upper side cutting clutch 70 and the cutting clutch 55 are turned on so that power can be transmitted from both the output portion 52b of the traveling transmission 52 and the threshing counter shaft 57 to the cutting counter shaft 54. I do.

During traveling or the like, the threshing clutch 56 is disengaged, and the cutting clutch lever 100 is operated to the disengaged position to disengage the upper-side cutting clutch 70 and the cutting clutch 55. Then, the traveling transmission 52
No power is transmitted from the output unit 52b nor the threshing counter shaft 57 to the cutting counter shaft 54, and the cutting unit 10 and the cutting counter shaft 54 can be stopped.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the entire combine.

FIG. 2 is a side view of a threshing material discharge unit.

FIG. 3 is a plan view of a guide member.

FIG. 4 is a schematic diagram of a transmission structure.

FIG. 5 is a side view of an interlocking structure of the threshing clutch and the upper side cutting clutch.

FIG. 6 is an explanatory diagram showing a relationship between a traveling speed and a mowing unit drive speed.

FIG. 7 is a side view of an interlocking structure of the reaping clutch and the upper reaping clutch.

[Explanation of symbols]

 19 Cutting part drive shaft 46 Threshing drive shaft 51 Engine 51a Engine output shaft 52 Traveling transmission device 52b Traveling transmission device output portion 54 Cutting counter shaft 55 Cutting clutch 56 Threshing clutch 57 Threshing counter shaft 58 Threshing drive mechanism 60 High speed side Interlocking mechanism 62 One-way rotation clutch of high-speed side interlocking mechanism 65 Low-speed side interlocking mechanism 67 One-way rotation clutch of low-speed side interlocking mechanism 70 Upper reaping clutch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60K 17/28 B60K 17/28 C

Claims (2)

[Claims] A threshing counter shaft interlocked with an output shaft of an engine via a threshing clutch, a threshing drive mechanism for transmitting the rotating power of the threshing counter shaft to a threshing drive shaft, and an output portion of a traveling transmission. A cutting counter shaft interlocked via a high-speed transmission mechanism having a directional rotating clutch, and a cutting clutch for interlocking the cutting counter shaft with a cutting unit drive shaft, and a one-way linking the threshing counter shaft to the cutting counter shaft. If the output speed of the traveling transmission is higher than the set speed, the transmission is transmitted from the traveling transmission to the mowing counter shaft by the high-speed transmission mechanism, and the output speed of the traveling transmission is set to the set speed. A combine having a low-speed transmission mechanism for transmitting from the threshing counter shaft to the mowing counter shaft in preference to the high-speed transmission mechanism if The high-speed transmission mechanism is provided with a high-side mowing clutch that cuts off transmission to a mowing counter shaft, and when the threshing clutch is operated to the off-side, the upper-side mowing clutch switches to the off-side. And a transmission structure for a combine in which the threshing clutch and the upper-side mowing clutch are linked so that the upper-side mowing clutch is switched to the inward-side when the threshing clutch is operated to the input side. 2. A threshing counter shaft interlocked with an output shaft of an engine via a threshing clutch, a threshing drive mechanism for transmitting the rotating power of the threshing counter shaft to a threshing drive shaft, and an output portion of the traveling transmission. A cutting counter shaft interlocked via a high-speed transmission mechanism having a directional rotating clutch, and a cutting clutch for interlocking the cutting counter shaft with a cutting unit drive shaft, and a one-way linking the threshing counter shaft to the cutting counter shaft. If the output speed of the traveling transmission is higher than the set speed, the transmission is transmitted from the traveling transmission to the mowing counter shaft by the high-speed transmission mechanism, and the output speed of the traveling transmission is set to the set speed. A combine having a low-speed transmission mechanism for transmitting from the threshing counter shaft to the mowing counter shaft in preference to the high-speed transmission mechanism if The high-speed side transmission mechanism is provided with a good cutting clutch that cuts off transmission to a cutting counter shaft, and when the cutting clutch is operated to the cut side, the good cutting clutch is switched to the cut side. A combine transmission system in which the cutting clutch and the upper cutting clutch are linked so that the upper cutting clutch is switched to the input side when the cutting clutch is operated to the input side.