WO2016152514A1

WO2016152514A1 - Combine

Info

Publication number: WO2016152514A1
Application number: PCT/JP2016/057289
Authority: WO
Inventors: 和田　俊郎; 窪田　昭彦; 大介阿部
Original assignee: ヤンマー株式会社
Priority date: 2015-03-25
Filing date: 2016-03-09
Publication date: 2016-09-29
Also published as: JP2016182055A; KR101978591B1; JP6215249B2; KR20170129925A; CN107426965B; CN107426965A

Abstract

This combine 100 is provided with: a reaping device 2 for reaping grain culms, a conveying device 3 for conveying the reaped grain culms, and a threshing device 4 for threshing the conveyed grain culms, the reaping device 2 and the conveying device 3 being capable of pivoting up and down, wherein, when the forward direction is the direction in which the conveying device 3 conveys the grain culms from the reaping device 2 to the threshing device 4, the conveying device 3 moves in the reverse direction by using the pivoting action of the conveying device 3 and the reaping device 2.

Description

Combine

The present invention relates to a combine.

Conventionally, there is known a combine that harvests cereal while running and threshs the harvested culm (see, for example, Patent Document 1). Such a combine is provided with a conveying device in order to convey the cereal from the reaping device to the threshing device. The transport device is movable in the reverse direction in preparation for a case where the cereal straw is jammed. However, such a structure is complicated and has a problem that the number of parts increases.

By the way, the reaping device is movable up and down (see, for example, Patent Document 2). More specifically, the reaping device and the conveying device are rotatable up and down in an integrated state. This is to adjust the cutting height according to the cereal and to enable smooth turning. Therefore, there has been a demand for a combine that can move the transport device in the reverse direction by using such a rotating operation.

JP 2014-83018 A JP 2014-176342 A

The present invention provides a combine that can move the transporting device in the reverse direction by utilizing the turning operation of the reaping device and the transporting device.

The first aspect of the present invention is:
A harvesting device for harvesting cereals;
A transport device for transporting the harvested cereal straw;
A threshing device for threshing the transported cereal straw,
In a combine that allows the reaping device and the conveying device to rotate up and down,
When the direction in which the conveying device conveys cereals from the reaping device to the threshing device is a forward direction,
The transport device is configured to move in the reverse direction by using the turning operation of the harvesting device and the transport device.

The second aspect of the present invention is the combine according to the first aspect,
The rotating shaft constituting the conveying device or the rotating shaft interlocking with the conveying device comprises a one-way rotating mechanism,
The one-way rotating mechanism is configured to rotate the rotating shaft in the reverse direction by using the rotating operation.

A third aspect of the present invention is the combine according to the second aspect,
Comprising a rotor constituting the conveying device;
The one-way rotating mechanism is attached to the rotating shaft of the rotor.

A fourth aspect of the present invention is the combine according to the second aspect,
Comprising a conveyor constituting the conveying device;
The one-way rotating mechanism is attached to the rotating shaft of the conveyor.

A fifth aspect of the present invention is the combine according to any one of the second to fourth aspects,
Equipped with a control mechanism,
The control mechanism can be switched to a state that operates based on a state in which the one-way rotation mechanism does not operate.

As the effects of the present invention, the following effects are obtained.

According to the first aspect of the present invention, the transport device is movable in the reverse direction by using the turning operation of the reaping device and the transport device. Thereby, the combine which applied this technical idea can remove a corn easily by moving this conveying apparatus to a reverse direction, even if a conveying apparatus is jammed.

According to the second aspect of the present invention, the rotating shaft constituting the conveying device or the rotating shaft interlocking with the conveying device is provided with the one-way rotating mechanism. The one-way rotation mechanism rotates the rotation shaft in the reverse direction by using the rotation operation of the reaping device and the transport device. Thereby, the combine which applied this technical idea can move a conveying apparatus to a reverse direction reliably.

According to the third aspect of the present invention, the rotor constituting the transport device is provided. The one-way rotation mechanism is attached to the rotation shaft of the rotor. Thereby, the combine which applied this technical idea can rotate a rotor to a reverse direction reliably.

According to the fourth aspect of the present invention, a conveyor that constitutes the conveying device is provided. The one-way rotation mechanism is attached to the rotation shaft of the conveyor. Thereby, the combine which applied this technical idea can move a conveyor to a reverse direction reliably.

According to the fifth aspect of the present invention, the control mechanism is provided. The control mechanism can be switched to a state in which the one-way rotating mechanism is not operated. Thereby, the combine which applied this technical idea can move a conveying apparatus to a reverse direction based on operator's operation.

The figure which shows a combine. The figure seen from the arrow L of FIG. The figure seen from the arrow R of FIG. The figure which shows the outline | summary of a power transmission mechanism. The figure which shows some details of a power transmission mechanism. The figure which shows some details of a power transmission mechanism. The figure which shows a conveying apparatus. The figure which shows the outline | summary of a hydraulic action mechanism. The figure which shows the one part detail of a hydraulic action mechanism. The figure which shows the one part detail of a hydraulic action mechanism. The figure which shows a reaping apparatus and a conveying apparatus. The figure which shows the reverse structure which concerns on 1st embodiment. The figure which shows the operation | movement aspect of a reverse structure. The figure which shows the operation | movement aspect of a reverse structure. The figure which shows the operation | movement aspect of a control mechanism. The figure which shows the reverse motion structure which concerns on 2nd embodiment. The figure which shows the operation | movement aspect of a reverse structure. The figure which shows the operation | movement aspect of a reverse structure. The figure which shows the operation | movement aspect of a control mechanism. The figure which shows the conveying apparatus of another combine. The figure which shows the conveying apparatus of another combine.

First, the combine 100 will be briefly described.

FIG. 1 shows a combine 100. 2 is a view seen from the arrow L in FIG. 1, and FIG. 3 is a view seen from the arrow R in FIG. In addition, in the figure, the front-back direction, the left-right direction, and the up-down direction of the combine 100 are represented.

The combine 100 is mainly composed of a traveling device 1, a reaping device 2, a conveying device 3, a threshing device 4, a sorting device 5, a storage device 6, and a power device 7.

The traveling device 1 is provided below the chassis 10. The traveling device 1 includes a transmission 11 and

crawler devices

12 and 12. The transmission 11 transmits rotational power of an engine 71 described later to the

crawler devices

12 and 12. The

crawler devices

12 and 12 cause the combine 100 to travel in the front-rear direction. The

crawler devices

12 and 12 turn the combine 100 in the left-right direction.

The cutting device 2 is provided in front of the traveling device 1. The harvesting device 2 includes a reel 21, a cutter 22, and an auger 23. The reel 21 causes a grain culm in the field. The cutter 22 cuts the culm caused by the reel 21. The auger 23 collects the cereals cut by the cutter 22 and sends them to the transport device 3.

The conveying device 3 is provided behind the reaping device 2. The transport device 3 includes a conveyor 31 and a rotor 32. The conveyor 31 conveys the cereals fed by the auger 23 to the rotor 32. The rotor 32 feeds the cereal straw conveyed by the conveyor 31 to the threshing device 4.

The threshing device 4 is provided behind the conveying device 3. The threshing device 4 includes a threading rotor 41 and a sieve mesh 42. The threading rotor 41 threshs the cereals fed by the rotor 32. Moreover, the threading rotor 41 conveys the grain candy. The sieve mesh 42 supports the cereals conveyed by the threading rotor 41 and drops the cereal to the sorting device 5.

The sorting device 5 is provided below the threshing device 4. The sorting device 5 includes a swing device 51 and a blower device 52. The oscillating device 51 sifts the cereal and sorts the grain. The blower 52 blows away the cereal that has fallen with the cereal and the cereal that remains on the swinging device 51. Thereafter, the cereals are cut by a cutter and discharged as sawdust.

The storage device 6 is provided on the side of the threshing device 4 and the sorting device 5. The storage device 6 includes a Glen tank 61 and an auger 62. The Glen tank 61 stores the grains that have been conveyed from the sorting device 5. The auger 62 is used when discharging the grains in the grain tank 61.

The power unit 7 is provided in front of the storage unit 6. The power unit 7 includes an engine 71. The engine 71 converts thermal energy obtained by burning fuel into kinetic energy. More specifically, the engine 71 converts thermal energy obtained by burning fuel into rotational power.

Next, the power transmission mechanism 8 of the combine 100 will be described.

FIG. 4 shows an outline of the power transmission mechanism 8. 5 and 6 show part of the power transmission mechanism 8 in detail.

The power transmission mechanism 8 includes a transmission 11 and various transmission mechanisms. Here, description will be made by paying attention to the front transmission mechanism 8F that drives the reaping device 2, the transport device 3, and the threshing device 4, and the rear transmission mechanism 8R that drives the sorting device 5.

The front transmission mechanism 8F uses the rotational power of the engine 71 to drive the reaping device 2, the transport device 3, and the threshing device 4. The rotational power of the engine 71 is input to the front transmission mechanism 8F via the center shaft 522 of the blower fan 521. A pulley 811 is attached to the center shaft 522, and a belt 812 is hung on the pulley 811.

The front transmission mechanism 8F includes a rotary shaft 82. A pulley 821 is attached to the rotary shaft 82, and a belt 812 is hung on the pulley 821. Therefore, the rotary shaft 82 rotates as the center shaft 522 rotates. Further, a pulley 822 is attached to the rotary shaft 82, and a belt 823 is hung on the pulley 822. The rotary shaft 82 is connected to the threading rotor 41 via the gear unit 824. Therefore, the threading rotor 41 rotates as the rotary shaft 82 rotates.

Furthermore, the front transmission mechanism 8F includes a rotary shaft 83. A pulley 831 is attached to the rotary shaft 83, and a belt 823 is hung on the pulley 831. Therefore, the rotary shaft 83 rotates as the rotary shaft 82 rotates. A sprocket 832 is attached to the rotary shaft 83, and a chain 833 is hung on the sprocket 832. The rotary shaft 83 constitutes the rotor 32. Accordingly, the rotor 32 rotates while being integrated with the rotary shaft 83. The detailed structure of the rotor 32 will be described later.

Furthermore, the front transmission mechanism 8F includes a rotary shaft 84. A sprocket 841 is attached to the rotary shaft 84, and a chain 833 is hung on the sprocket 841. Therefore, the rotary shaft 84 rotates with the rotation of the rotary shaft 83. A sprocket 842 is attached to the rotary shaft 84, and a chain 843 is hung on the sprocket 842. The rotary shaft 84 constitutes the conveyor 31. Therefore, the conveyor 31 moves in a state of being integrated with the rotary shaft 84. The detailed structure of the conveyor 31 will be described later.

Furthermore, the front transmission mechanism 8F includes a rotary shaft 85. A sprocket 851 is attached to the rotary shaft 85, and a chain 843 is hung on the sprocket 851. Therefore, the rotary shaft 85 rotates with the rotation of the rotary shaft 84. A sprocket 852 is attached to the rotary shaft 85, and a chain 853 is hung on the sprocket 852. The rotary shaft 85 is connected to the cutter 22 via a link unit 854, a swing shaft 855, and a link unit 856. Therefore, the cutter 22 moves with the rotation of the rotary shaft 85.

Furthermore, the front transmission mechanism 8F includes a rotary shaft 86. A sprocket 861 is attached to the rotary shaft 86, and a chain 853 is hung on the sprocket 861. Therefore, the rotary shaft 86 rotates as the rotary shaft 85 rotates. A sprocket 862 is attached to the rotary shaft 86, and a chain 863 is hung on the sprocket 862. The chain 863 is hung on a sprocket 864 provided separately, and the chain 866 is hung on a sprocket 865 that rotates together with the sprocket 864. The rotary shaft 86 constitutes the auger 23. Accordingly, the auger 23 rotates while being integrated with the rotary shaft 86.

Furthermore, the front transmission mechanism 8F includes a rotary shaft 87. A sprocket 871 is attached to the rotary shaft 87, and a chain 866 is hung on the sprocket 871. Therefore, the rotary shaft 87 rotates with the rotation of the rotary shaft 86. A link unit 872 is attached to the rotary shaft 87, and the reel 21 is attached to the link unit 872. Note that the rotary shaft 87 constitutes the reel 21. Therefore, the reel 21 rotates while being integrated with the rotary shaft 87.

The rear transmission mechanism 8R transmits the rotational power of the engine 71 to the sorting device 5. The rotational power of the engine 71 is input to the rear transmission mechanism 8R via the center shaft 522 of the blower fan 521. A pulley 813 is attached to the center shaft 522, and a belt 814 is hung on the pulley 813.

The rear transmission mechanism 8R includes a rotary shaft 88. A pulley 881 is attached to the rotary shaft 88, and a belt 814 is hung on the pulley 881. Therefore, the rotary shaft 88 rotates as the center shaft 522 rotates. The rotary shaft 88 constitutes the conveyor 53. Accordingly, the conveyor 53 rotates in a state of being integrated with the rotary shaft 88. The conveyor 53 is used to convey the grains to the glen tank 61.

Furthermore, the rear transmission mechanism 8 </ b> R includes a rotary shaft 89. A pulley 891 is attached to the rotary shaft 89, and a belt 814 is hung on the pulley 891. Therefore, the rotary shaft 89 rotates as the center shaft 522 rotates. In addition, a pulley 892 is attached to the rotary shaft 89, and a belt 893 is hung on the pulley 892. The rotary shaft 89 constitutes the conveyor 54. Accordingly, the conveyor 54 rotates while being integrated with the rotary shaft 89. The conveyor 54 is used to convey the grains to the rocking device 51.

Further, the rear transmission mechanism 8R includes a crankshaft 90. A pulley 901 is attached to the crankshaft 90, and a belt 893 is hung on the pulley 901. Therefore, the crankshaft 90 rotates with the rotation of the rotary shaft 89. The rotary shaft 90 constitutes the swing device 51. Therefore, the oscillating device 51 is movable in a state integrated with the rotary shaft 90.

Here, the detailed structure and operation mode of the transfer device 3 will be described. However, the description will be made focusing on the structure of the conveyor 31 and the structure of the rotor 32.

FIG. 7 shows the transfer device 3. In addition, the arrow Dc in a figure represents the movable direction of the conveyor 31 which comprises the conveying apparatus 3. FIG. In addition, an arrow Dr in the drawing represents the rotation direction of the rotor 32 constituting the transport device 3.

As described above, the transport device 3 is composed of the conveyor 31 and the rotor 32.

The conveyor 31 has a structure in which a plurality of plates 846 are stretched over two chains 845 stretched in parallel. The conveyor 31 moves while being integrated with the rotary shaft 84. Specifically, two

sprockets

844 and 844 are attached to the rotary shaft 84.

Chains

845 and 845 are hung on the

sprockets

844 and 844, respectively. A total of ten plates 846 are attached to the

chains

845 and 845 at a predetermined interval. With such a structure, when the rotary shaft 84 rotates, the conveyor 31 moves in a state of being integrated with the rotary shaft 84 (see arrow Dc). For this reason, the cereal basket is conveyed backward in a state of being hooked on the plate 846. In addition, the conveyor 31 is accommodated in the conveyor housing 33 used as the conveyance path | route of the grain candy. Therefore, the culm fed by the auger 23 passes through the inside of the conveyor housing 33 and is conveyed to the rotor 32.

The rotor 32 has a structure in which a plurality of blades 322 are attached to the outer periphery of a cylindrical drum 321. The rotor 32 rotates while being integrated with the rotary shaft 83. More specifically, two

flanges

834 and 834 are attached to the rotary shaft 83. On the other hand, covers 321c and 321c are attached to both ends of the drum 321. Further,

flanges

834 and 834 are welded to the

covers

321c and 321c, respectively. With such a structure, when the rotary shaft 83 rotates, the rotor 32 rotates in an integrated state with the rotary shaft 83 (see arrow Dr). For this reason, the cereals are conveyed backward while being hooked on the blade 322. In addition, the rotor 32 is accommodated in the rotor housing 34 used as the conveyance path of the grain candy. Therefore, the cereals conveyed by the conveyor 31 pass through the interior of the rotor housing 34 and are sent to the threshing device 4.

Next, the hydraulic operating mechanism 9 of the combine 100 will be described.

FIG. 8 shows an outline of the hydraulic operation mechanism 9. 9 and 10 show some details of the hydraulic operation mechanism 9.

The hydraulic operating mechanism 9 is composed of various operating mechanisms in addition to a continuously variable transmission (not shown) built in the transmission 11. Here, the description will be made focusing on the reaping device operating mechanism 9R for moving up and down the reaping device 2 and the reel operating mechanism 9S for moving up and down the reel 21 of the reaping device 2.

The reaping device operating mechanism 9R moves up and down the reaping device 2 using hydraulic oil with increased pressure. The hydraulic oil sent from the hydraulic oil pump 91 is supplied to the reaping device operating mechanism 9R. A hydraulic oil pipe 911 is connected to the hydraulic oil pump 91, and a flow dividing valve 912 is connected to the hydraulic oil pipe 911. In addition, a hydraulic oil pipe 913 is connected to the diversion valve 912, and a diversion valve 915 is connected via a hydraulic oil pipe 914 connected to the hydraulic oil pipe 913.

The reaping device operating mechanism 9R includes an electromagnetic switching valve 92. A hydraulic oil pipe 921 is connected to the electromagnetic switching valve 92, and the hydraulic oil pipe 921 is connected to the flow dividing valve 915. Therefore, the hydraulic oil sent from the hydraulic oil pump 91 is supplied to the electromagnetic switching valve 92. Further,

hydraulic oil pipes

922 and 923 are connected to the electromagnetic switching valve 92, and the respective

hydraulic oil pipes

922 and 923 are connected to the pilot check valve 924. Furthermore, a hydraulic oil pipe 925 is connected to the electromagnetic switching valve 92, and the hydraulic oil pipe 925 is connected to the tank 96 via another hydraulic oil pipe.

Furthermore, the reaping device operating mechanism 9R includes a reaping device lifting / lowering cylinder 93. A hydraulic oil pipe 931 is connected to the reaping device lifting cylinder 93, and the hydraulic oil pipe 931 is connected to a slow return check valve 932. The slow return check valve 932 is connected to the pilot check valve 924 via the hydraulic oil pipe 933. Therefore, when the electromagnetic switching valve 92 is operated based on the operator's operation, the hydraulic oil sent from the electromagnetic switching valve 92 is supplied to the reaping device lifting / lowering cylinder 93. In this way, the reaping device lifting / lowering cylinder 93 is extended by the rod 93R being pushed out of the cylinder 93S. The slow return check valve 932 can slowly flow back the hydraulic oil, and the pilot check valve 924 can flow the hydraulic oil back on condition that the pilot pressure is applied. Therefore, when the electromagnetic switching valve 92 is activated based on the operator's operation, the hydraulic oil in the reaping device lifting / lowering cylinder 93 is returned to the tank 96 through the electromagnetic switching valve 92. Thus, the reaping device lifting / lowering cylinder 93 contracts when the rod 93R is drawn into the cylinder 93S.

The reel operating mechanism 9S includes an electromagnetic switching valve 94. A hydraulic oil pipe 941 is connected to the electromagnetic switching valve 94, and the hydraulic oil pipe 941 is connected to the flow dividing valve 915. Therefore, the hydraulic oil sent from the hydraulic oil pump 91 is supplied to the electromagnetic switching valve 94. Further,

hydraulic oil pipes

942 and 943 are connected to the electromagnetic switching valve 94, and the respective

hydraulic oil pipes

942 and 943 are connected to the pilot check valve 944. Furthermore, a hydraulic oil pipe 945 is connected to the electromagnetic switching valve 94, and the hydraulic oil pipe 945 is connected to the tank 96 via another hydraulic oil pipe.

Further, the reel operating mechanism 9S includes reel raising / lowering

cylinders

95 and 95. A hydraulic oil pipe 951 is connected to the

reel lifting cylinders

95 and 95, and is connected to a slow return check valve 953 via a hydraulic oil pipe 952 connected to the hydraulic oil pipe 951. The slow return check valve 953 is connected to the pilot check valve 944 via a hydraulic oil pipe 954. Therefore, when the electromagnetic switching valve 94 is operated based on the operation of the operator, the hydraulic oil sent from the electromagnetic switching valve 94 is supplied to the

reel lifting cylinders

95 and 95. Thus, the reel raising / lowering

cylinders

95 and 95 are extended by the rods 95R being pushed out from the respective cylinders 95S. The slow return check valve 953 can slowly reverse the hydraulic oil, and the pilot check valve 944 can reverse the hydraulic oil on condition that the pilot pressure is applied. Therefore, when the electromagnetic switching valve 94 is operated based on the operator's operation, the hydraulic oil in the

reel lifting cylinders

95 and 95 is returned to the tank 96 through the electromagnetic switching valve 94. Thus, the

reel lifting cylinders

95 and 95 are contracted by the rods 95R being drawn into the cylinders 95S.

Here, the detailed structure and operation mode of the reaping device 2 and the conveying device 3 will be described. However, the description will be given focusing on the structure related to the lifting and lowering of the cutting device 2 and the structure related to the lifting and lowering of the reel 21.

FIG. 11 shows the reaping device 2 and the conveying device 3. In addition, the arrow Lr in a figure represents the rotation direction of the cutting device 2 and the conveying apparatus 3. FIG. In addition, an arrow Ls in the drawing represents the rotation direction of the reel 21.

As described above, the cutting device 2 includes the reel 21, the cutter 22, and the auger 23. Among these, the cutter 22 and the auger 23 are supported by a frame 25 combined in a complicated manner. In addition, as described above, the transport device 3 includes the conveyor 31 and the rotor 32. Of these, the conveyor 31 is supported by a frame 35 that is rotatable about a rotary shaft 84. The frame 25 and the frame 35 are welded together.

The reaping device lifting / lowering cylinder 93 has a structure in which a piston is inserted into the cylinder 93S and a rod 93R is fixed to the piston. Therefore, when hydraulic oil is supplied to the cylinder 93S, the rod 93R is pushed out and extended as the piston slides. On the other hand, when the hydraulic oil is discharged from the cylinder 93S, the rod 93R is retracted and contracts as the piston slides. The lifting and lowering cylinder 93 of the reaping device is centered on the pin 10P by inserting the pin 10P in a state where the pin hole of the clevis provided in the cylinder 93S and the pin hole of the bracket 10B fixed to the chassis 10 are overlapped. As shown in FIG. Further, the cutting device lifting / lowering cylinder 93 is inserted into the pin 35P in a state where the pin hole of the clevis attached to the rod 93R and the pin hole of the bracket 35B fixed to the frame 35 are overlapped. Are pivotally connected around the center. For this reason, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) rotate up and down by the extension or contraction of the reaping device lifting cylinder 93 (see arrow Lr). That is, this is a structure related to the raising and lowering of the reaping device 2.

In addition, the reel 21 is supported by a frame 26. The frame 26 is rotatable with respect to the frame 25.

The reel raising / lowering cylinder 95 has a structure in which a piston is inserted into the cylinder 95S, and a rod 95R is fixed to the piston. Therefore, when hydraulic oil is supplied to the cylinder 95S, the rod 95R is pushed out and extended as the piston slides. On the other hand, when the hydraulic oil is discharged from the cylinder 95S, the rod 95R is drawn and contracts as the piston slides. The reel raising / lowering cylinder 95 is centered on the pin 25P by inserting the pin 25P with the pin hole of the clevis attached to the cylinder 95S and the pin hole of the bracket 25B fixed to the frame 25 overlapped. It is pivotally connected. Further, the reel lifting cylinder 95 is inserted into the pin 26P in a state where the pin hole of the clevis provided in the rod 95R and the pin hole of the bracket 26B fixed to the frame 26 are overlapped with each other. It is pivotally connected as a center. For this reason, the reel 21 is rotated up and down by extension or contraction of the reel lifting cylinder 95 (see arrow Ls). That is, this is a structure related to the raising and lowering of the reel 21.

Next, a technique will be described in which the transport device 3 can be moved in the reverse direction by using the turning operation of the reaping device 2 and the transport device 3.

First, the reverse movement structure 36 according to the first embodiment will be described.

FIG. 12 shows the reverse movement structure 36 according to the first embodiment. FIG. 13 shows an operation mode of the reverse movement structure 36. In the present application, the direction in which the conveying device 3 conveys the cereal from the reaping device 2 to the threshing device 4 is defined as “forward direction”, and the opposite is defined as “reverse direction”.

The reverse movement structure 36 is mainly composed of a one-way rotation mechanism (hereinafter referred to as “ratchet mechanism 37”). The ratchet mechanism 37 includes a cam plate 371 and a lever 372.

The cam plate 371 is fixed to the rotary shaft 83 in a state where the rotary shaft 83 is fitted in the center portion thereof. Therefore, the cam plate 371 rotates in a state of being integrated with the rotary shaft 83. The cam plate 371 has a plurality of cams 371c formed on the outer periphery thereof. The cam 371c has a cam face formed by a plane whose distance from the center of the cam plate 371 abruptly increases and a plane whose distance gradually decreases with a change in phase when rotating in the forward direction. Yes.

The lever 372 is rotatably supported with respect to the rotary shaft 83 in a state where the rotary shaft 83 is fitted into the base end ring portion. Therefore, the lever 372 rotates in any direction regardless of the rotation of the rotary shaft 83 or the cam plate 371. The lever 372 includes a latch 373 at the center in the longitudinal direction. The latch 373 is rotatably supported with respect to the lever 372 and is biased by a spring 374 so as to abut against a cam plate 371 (more precisely, a cam face).

Furthermore, the reverse movement structure 36 includes a link mechanism 38. The link mechanism 38 has a bracket 381 and a rod 382.

The bracket 381 is fixed to the side surface of the conveyor housing 33. The rod 382 has one end rotatably attached to the lever 372 and the other end rotatably attached to the bracket 381.

Hereinafter, the operation mode of the reverse movement structure 36 will be described.

First, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated upward (see arrow Lr in FIG. 11). Then, as shown in FIG. 13A, since the rod 382 pulls the lever 372, the lever 372 rotates in one direction (see arrow Ma). At this time, since the latch 373 is also rotated together with the lever 372, the latch 373 pushes the cam 371c (more precisely, the cam face) to rotate the cam plate 371 (see arrow Mb). In this way, the rotary shaft 83 rotates in the reverse direction, and as a result, the rotor 32 rotates in the reverse direction (see arrow Rr). Further, since the rotary shaft 84 is interlocked with the rotation of the rotary shaft 83, the conveyor 31 is also movable in the reverse direction (see arrow Rc).

Thereafter, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated downward (see arrow Lr in FIG. 11). Then, as shown in FIG. 13B, since the rod 382 pushes the lever 372, the lever 372 rotates to the other side (see arrow Mc). At this time, the latch 373 rotates together with the lever 372, but the latch 373 slides and moves to the adjacent cam 371c without pushing the cam 371c (more precisely, the cam face) (see arrow Md). Therefore, the rotary shaft 83 does not rotate in the forward direction or the reverse direction, and as a result, the rotor 32 does not rotate. Similarly, the conveyor 31 does not move.

As described above, the rotor 32 rotates in the reverse direction little by little every time the rotation operation of the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) is repeated. Further, the conveyor 31 also moves in the reverse direction little by little every time the cutting device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated.

From the above, the transport device 3 is moved in the reverse direction by using the turning operation of the reaping device 2 and the transport device 3. Thereby, the present combine 100 can easily remove the cereal by moving the transport device 3 in the reverse direction even if the transport device 3 is clogged with the cereal.

By the way, the reverse motion structure 36 according to the first embodiment may cause the following problem when the cereals are clogged inside the conveyor housing 33. That is, when the grain cutter is clogged and the frictional resistance of the conveyor 31 with respect to the conveyor housing 33 is increased, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated downward. Accordingly, the conveyor 31 moves in the forward direction and returns to the position (phase) before moving in the reverse direction. Further, along with this, the rotor 32 also rotates in the forward direction and returns to the position (phase) before rotating in the reverse direction. Such a problem can be dealt with by providing the second latch 375 (see FIG. 14).

The latch 375 is provided in a non-movable structure such as the rotor housing 34. In this embodiment, the latch 375 is rotatably supported with respect to the rotor housing 34 and is urged by a spring 376 so as to abut against a cam plate 371 (more precisely, a cam face).

Hereinafter, an operation mode of the reverse movement structure 36 provided with the second latch 375 will be described.

First, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated upward (see arrow Lr in FIG. 11). Then, as shown in FIG. 14A, since the rod 382 pulls the lever 372, the lever 372 rotates in one direction (see arrow Ma). At this time, since the latch 373 is also rotated together with the lever 372, the latch 373 pushes the cam 371c (more precisely, the cam face) to rotate the cam plate 371 (see arrow Mb). At the same time, since the latch 375 is supported by the rotor housing 34, the latch 375 slides to the adjacent cam 371c without pushing the cam 371c (more precisely, the cam face). In this way, the rotary shaft 83 rotates in the reverse direction, and as a result, the rotor 32 rotates in the reverse direction (see arrow Rr). Moreover, since the rotary shaft 84 rotates with rotation of the rotary shaft 83, the conveyor 31 will also move to a reverse direction (refer arrow Rc).

Thereafter, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated downward (see arrow Lr in FIG. 11). Then, as shown in FIG. 14B, since the rod 382 pushes the lever 372, the lever 372 rotates to the other side (see arrow Mc). At this time, the latch 373 also rotates together with the lever 372, but the latch 373 slides and moves to the adjacent cam 371c without pushing the cam 371c (more precisely, the cam face) (see arrow Md). . This is because the rotation of the rotary shaft 83 is stopped by the latch 375 engaging with the cam 371c. Therefore, the rotary shaft 83 does not rotate in the forward direction or the reverse direction, and as a result, the rotor 32 does not rotate. Similarly, the conveyor 31 does not move.

In addition, the reverse movement structure 36 may include a control mechanism 39 (see FIG. 15). The control mechanism 39 is switchable from a state where the ratchet mechanism 37 is not operated to a state where it is operated. In this case, the latch 373 is biased by the spring 374 so as to be separated from the cam plate 371 (more precisely, the cam face).

The control mechanism 39 has a lever 391 and a wire 392.

The lever 391 is disposed in the vicinity of the driver seat where the operator sits. One end of the wire 392 is attached to the lever 391 and the other end is attached to the latch 373. The wire 392 can pull the latch 373 against the biasing force of the spring 374. That is, the wire 392 can pull the latch 373 so that the latch 373 contacts the cam plate 371 (more precisely, the cam face). As a result, when the operator operates the lever 391, the latch 373 comes into contact with the cam plate 371 (more precisely, the cam face) and is engaged with the cam 371c (see Fc from the arrow Fa). Note that in the case where the latch 375 is provided, the latch 375 and the latch 373 may be connected using a rod and configured to be interlocked with the latch 373.

As described above, the control mechanism 39 can be switched to a state in which the ratchet mechanism 37 is not operated. Thereby, the combine 100 can move the conveyance apparatus 3 to a reverse direction based on an operator's operation.

Next, the reverse movement structure 36 according to the second embodiment will be described.

FIG. 16 shows a reverse movement structure 36 according to the second embodiment. FIG. 17 shows an operation mode of the reverse movement structure 36. In the present application, the direction in which the conveying device 3 conveys the cereal from the reaping device 2 to the threshing device 4 is defined as “forward direction”, and the opposite is defined as “reverse direction”.

The reverse movement structure 36 is mainly composed of a ratchet mechanism 37. The ratchet mechanism 37 includes a cam plate 371 and a lever 372.

The cam plate 371 is fixed to the rotary shaft 84 in a state where the rotary shaft 84 is fitted in the central portion thereof. Therefore, the cam plate 371 rotates in a state integrated with the rotary shaft 84. The cam plate 371 has a plurality of cams 371c formed on the outer periphery thereof. The cam 371c has a cam face formed by a plane whose distance from the center of the cam plate 371 suddenly increases and a plane whose distance gradually decreases with a change in phase when rotating in the forward direction. .

The lever 372 is rotatably supported with respect to the rotary shaft 84 in a state where the rotary shaft 84 is fitted in the ring portion at the base end thereof. Therefore, the lever 372 rotates in any direction regardless of the rotation of the rotary shaft 84 or the cam plate 371. The lever 372 includes a latch 373 at the center in the longitudinal direction. The latch 373 is rotatably supported with respect to the lever 372 and is biased by a spring 374 so as to abut against a cam plate 371 (more precisely, a cam face).

The bracket 381 is fixed to the side surface of the rotor housing 34. The rod 382 has one end rotatably attached to the lever 372 and the other end rotatably attached to the bracket 381.

First, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated upward (see arrow Lr in FIG. 11). Then, as shown in FIG. 17A, since the rod 382 presses and holds the lever 372, only the cam plate 371 rotates with respect to the lever 372 (see arrow Mh). At this time, the cam plate 371 also rotates with respect to the latch 373 supported by the lever 372, so that the latch 373 slides on the cam 371c (more precisely, the cam face) and moves to the adjacent cam 371c. In this way, the rotary shaft 84 rotates in the reverse direction, and as a result, the conveyor 31 moves in the reverse direction (see arrow Rc). Further, since the rotary shaft 83 is interlocked with the rotary shaft 84, the rotor 32 also rotates in the reverse direction (see arrow Rr).

Thereafter, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated downward (see arrow Lr in FIG. 11). Then, as shown in FIG. 17B, since the rod 382 holds the lever 372, only the cam plate 371 tries to rotate to the other side with respect to the lever 372. However, since the latch 373 is engaged with the cam 371c (more precisely, the cam face), the cam plate 371 does not rotate. Therefore, the rotary shaft 84 does not rotate in the forward direction or the reverse direction, and as a result, the conveyor 31 does not move. Similarly, the rotor 32 does not rotate.

As described above, the conveyor 31 is moved in the reverse direction little by little as the turning operation of the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) is repeated. In addition, the rotor 32 also rotates in the reverse direction little by little as the rotary operation of the reaping device 2 and the transport device 3 (more precisely, the conveyor 31 of the transport device 3) is repeated.

Incidentally, the reverse movement structure 36 according to the second embodiment may cause the following problem when the cereal is clogged inside the rotor housing 34. That is, when the cereals are clogged and the frictional resistance of the rotor 32 against the rotor housing 34 increases, the conveyor 31 also becomes immobile, and the mowing device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated upward. Also, the conveyor 31 remains stopped. As a matter of course, the rotor 32 also remains stopped. Such a problem can be dealt with by providing a second bracket 383 and making the rod 382 interchangeable (see FIG. 18).

The bracket 383 is provided in the conveyor housing 33. One end of the rod 382 is rotatably attached to the lever 372, and the other end can be freely switched to either the bracket 381 or the bracket 383.

Hereinafter, an operation mode of the reverse movement structure 36 when the rod 382 is replaced with the bracket 383 will be described.

First, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated upward (see arrow Lr in FIG. 11). Then, as shown in FIG. 18A, the rod 382 pushes the lever 372, so that the lever 372 rotates in one direction (see arrow Mi). At this time, since the latch 373 is also rotated together with the lever 372, the latch 373 pushes the cam 371c (more precisely, the cam face) to rotate the cam plate 371 (see arrow Mj). In this way, the rotary shaft 84 rotates in the reverse direction, and as a result, the conveyor 31 moves in the reverse direction (see arrow Rc). Further, since the rotary shaft 83 is interlocked with the rotation of the rotary shaft 84, the rotor 32 also rotates in the reverse direction (see arrow Rr).

Thereafter, the reaping device 2 and the conveying device 3 (more precisely, the conveyor 31 of the conveying device 3) are rotated downward (see arrow Lr in FIG. 11). Then, as shown in FIG. 18B, since the rod 382 pulls the lever 372, the lever 372 rotates to the other side (see the arrow Mk). At this time, the latch 373 rotates together with the lever 372, but the latch 373 slides and moves to the adjacent cam 371c without pushing the cam 371c (more precisely, the cam face) (see arrow Ml). Therefore, the rotary shaft 84 does not rotate in the forward direction or the reverse direction, and as a result, the conveyor 31 does not move. Similarly, the rotor 32 does not rotate.

In addition, the reverse movement structure 36 may include a control mechanism 39 (see FIG. 19). The control mechanism 39 is switchable from a state where the ratchet mechanism 37 is not operated to a state where it is operated. In this case, the latch 373 is biased by the spring 374 so as to be separated from the cam plate 371 (more precisely, the cam face).

The control mechanism 39 has a lever 391 and a wire 392.

The lever 391 is disposed in the vicinity of the driver seat where the operator sits. One end of the wire 392 is attached to the lever 391 and the other end is attached to the latch 373. The wire 392 can pull the latch 373 against the biasing force of the spring 374. That is, the wire 392 can pull the latch 373 so that the latch 373 contacts the cam plate 371 (more precisely, the cam face). As a result, when the operator operates the lever 391, the latch 373 comes into contact with the cam plate 371 (more precisely, the cam face) and is engaged with the cam 371c (see Fc from the arrow Fa).

Next, a case where the technical idea of the present invention is applied to another combine 200 will be described.

20 and 21 show another transport device 3E of the combine 200.

The transport device 3E has substantially the same structure as the transport device 3 described above, but is different in that the rotor 32 is not provided. It is easy to apply the technical idea of the present invention also in such a transport device 3E.

For example, as shown in FIG. 20, if the ratchet mechanism 37 is provided on a rotary shaft 84E interlocked with the conveyor 31, the technical idea of the present invention can be applied as it is. Of course, as shown in FIG. 21, a ratchet mechanism 37 may be provided on the rotary shaft 84 constituting the conveyor 31.

The present invention can be used for combine technology.

100 Combine 3 Conveyor 31 Conveyor 32 Rotor 33 Conveyor Housing 34 Rotor Housing 37 Ratchet Mechanism (One-way Rotation Mechanism)
371 Cam plate 372 Lever 373 Latch 374 Spring 38 Link mechanism 381 Bracket 382 Rod 39 Control mechanism 391 Lever 392 Wire

Claims

A harvesting device for harvesting cereals;
A transport device for transporting the harvested cereal straw;
A threshing device for threshing the transported cereal straw,
In a combine that allows the reaping device and the conveying device to rotate up and down,
When the direction in which the conveying device conveys cereals from the reaping device to the threshing device is a forward direction,
The combine is characterized in that the transport device is movable in the reverse direction by utilizing the turning operation of the harvesting device and the transport device.
The rotating shaft constituting the conveying device or the rotating shaft interlocking with the conveying device comprises a one-way rotating mechanism,
The combine according to claim 1, wherein the one-way rotation mechanism rotates the rotation shaft in the reverse direction by using the rotation operation.
Comprising a rotor constituting the conveying device;
The combine according to claim 2, wherein the one-way rotating mechanism is attached to the rotating shaft of the rotor.
Comprising a conveyor constituting the conveying device;
The combine according to claim 2, wherein the one-way rotating mechanism is attached to the rotating shaft of the conveyor.
Equipped with a control mechanism,
The combine according to any one of claims 2 to 4, wherein the control mechanism is switchable to a state in which the control mechanism operates based on a state in which the one-way rotation mechanism does not operate.