JP2019106931A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a straw when switching the straw cutting device between a working position and a non-working position while the straw removing frame is raised while maintaining an appropriate installation position of the straw removing device and the straw cutting device. There is a demand for a combine that can prevent the straw cutting device from coming into contact with the transport end side portion of the straw transport device. SOLUTION: When the straw exhaust frame is raised to the second ascending position, the combine can switch the straw excretion cutting device between the working position and the non-working position, and the straw exhaling frame is raised to the first ascending position. In the raised state, the straw cutting device cannot be switched between the working position and the non-working position. [Selection diagram] FIG. 21

Description

  The present invention relates to a feed chain for holding and transporting cutting grain gutters, a threshing device for threshing a cutting grain grit that has a threshing cylinder and is transported by the feed chain, and a feed chain connected to the rear side of the threshing equipment. The waste transport device receives the waste after the threshing treatment from behind and sandwiches and transports it backward, and is disposed under the transport end side portion of the waste transport device and cuts the waste transported by the waste transport device And an exhaust cutting device.

  For example, a combine described in Patent Document 1 is already known as a combine as described above. In the combine described in Patent Document 1, a feed chain (in the literature, "threshing feed chain [38]") for holding and transporting cut grain pods, and a cut grain pod having a threshing cylinder and transported by the feed chain are subjected to threshing processing A threshing device (in the literature, “threshing device [17]”), and a waste transfer device (document) which is connected to the rear side of the threshing device and receives the waste after threshing treatment from the feed chain In the “Excavator / Transporter [23]”, an exhaust / disruption device (in the literature, provided under the transport end side of the eliminator / transporter and for processing the excrement transported by the eliminator / transporter) And a post-processing device [22] ". The displacement cutting device has a working position located below the transport end side portion of the displacement conveying device around a swing axis ("Y axis" in the literature) extending vertically in the left and right end portions, It is swingable over a non-working position located away from below the end of transport end of the transport device.

  According to Patent Document 2, the waste transport device (in the literature, "the waste transport device [15]") is inclined to be positioned on one side in the left-right direction of the machine toward the transport end of the waste transport device in plan view And a rocking frame which can be rocked up and down around a rocking axis ("Pivot axis [45]" in the literature) which extends in the longitudinal direction of the machine on one side in the left-right direction of the machine A combine equipped with a frame [31] ") is disclosed.

JP 2008-295395 A JP, 2012-50339, A

  Here, as the discharge frame is swung upward, the transfer end side portion of the discharge transfer device falls, and the position of the transfer end side portion of the discharge shredding device is the discharge frame The lower the rise position of the For this reason, when the displacement cutting device is to be switched between the working position and the non-working position in a state where the displacement frame is lifted to a relatively high raised position, the displacement cutting device is the transfer end of the displacement conveyance device. There is a risk of touching the side part.

  By the way, by moving the installation position of the discharge conveying apparatus upward or moving the installation position of the discharge cutting apparatus downward, the vertical distance between the discharge conveying apparatus and the discharge cutting apparatus There is also a concept of spreading and avoiding the above-mentioned contact. However, simply moving the installation position of the discharge conveying device and the discharge cutting device requires delivery of discharge between the feed chain and the discharge conveying device, or from the discharge conveying device to the discharge cutting device. It is not a good idea in terms of providing a good supply of waste.

  In view of the above situation, when switching the exhaust cutting device between the working position and the non-working position in a state where the exhaust frame is elevated while properly maintaining the installation positions of the exhaust conveying device and the exhaust cutting device There is a demand for a combine that can avoid the situation in which the exhaust cutting device comes in contact with the delivery end side portion of the exhaust conveying device.

The features of the present invention are:
A feed chain for holding and transporting a reaper
A threshing device having a threshing cylinder and threshing a reaping cropping grain carried by the feed chain;
A waste transport device which is connected to the rear side of the threshing device and receives the waste after threshing treatment from the feed chain and nips and transports it backward;
And a drainage / cutting device provided under the conveyance end side portion of the drainage / conveying device and cutting the drainage conveyed by the drainage / conveying device,
The displacement cutting device has a work position located below the transport end side portion of the displacement and transport device around a swing axis extending vertically in the left and right end portions, and the transport end of the displacement and transport device Swingable over a non-working position located away from below the side part,
The exhaust transport device is supported in an inclined state so as to be positioned on one side in the left-right direction of the machine toward the transport end side of the discharge transport device in plan view and extends in the front-rear direction on the one side in the left-right direction A displacement frame is provided which can be pivoted up and down around the pivot axis,
As a rising limit of the displacement frame, at least a first rising position and a second rising position lower than the first rising position are set.
In the state where the displacement frame is raised to the second raised position, the displacement / cutting device can be switched between the working position and the non-working position,
When the displacement frame is raised to the first raised position, the displacement / cutting device can not be switched between the working position and the non-working position.

  According to this feature configuration, in the state in which the displacement frame is raised to the relatively high first rising position, the displacement cutting device is not switched to the working position and the non-working position. As a result, when the displacement cutting device is switched between the working position and the non-working position in a state where the displacement frame is lifted, a situation in which the displacement cutting device contacts the conveyance end side portion of the displacement conveyance device It can be avoided. Moreover, since the movement of the installation position of the discharge conveyance apparatus and the installation position of the discharge cutting apparatus is not involved, the installation positions of the discharge conveyance apparatus and the discharge cutting apparatus can be properly maintained.

Furthermore, in the present invention,
A lock mechanism is provided which restricts the swinging of the displacement cutting device from the working position to the non-working position and the swinging of the displacement cutting device from the non-working position to the working position. Is preferable.

  According to this feature configuration, the mechanical means of the lock mechanism ensures that the drainage cutting device does not switch between the working position and the non-working position while the drainage frame is raised to the first raised position. Can be

Furthermore, in the present invention,
An interlocking mechanism is provided which interlocks the restraining operation of the lock mechanism with the elevating operation of the eliminator frame so that the lock mechanism restraining the swing of the eliminator cutting device interlockingly with the elevating of the eliminator frame Is preferable.

  According to this feature configuration, when the displacement frame is lifted, the swing of the displacement and cutting device is automatically restricted. Therefore, the displacement frame is lifted up to the first raised position. It is possible to avoid a situation in which the swinging of the scissors cutting device is not restricted.

Furthermore, in the present invention,
It is preferable that the locking mechanism allows the displacement and cutting device to swing by a predetermined angle range in a state in which the swing and cutting of the displacement and cutting device is regulated.

  According to the present feature configuration, in the state where the exhaust cutting device is located at the working position or the non-working position, the exhaust cutting device can be at the non-working position side or at the working position without requiring an effort It can be rocked slightly to the position side.

Furthermore, in the present invention,
An angle detection sensor for detecting a swing angle of the displacement cutting device is provided.
It is preferable that the angle detection sensor be provided on a support portion that swingably supports the displacement cutting device.

  According to this feature configuration, the angle detection sensor can accurately detect the swing angle of the displacement cutting device at a position near the swing axis of the displacement cutting device.

Furthermore, in the present invention,
A bracket on which the angle detection sensor is mounted;
The angle detection sensor has a rocking detection arm,
Preferably, the bracket is provided with a stopper that prevents the detection arm from swinging so that the detection arm does not swing out of the detection range from the initial position.

  According to this feature configuration, the stopper can be easily provided using the bracket. In addition, even if the exhaust cutting device is removed, the stopper remains on the machine body side, whereby the swing of the detection arm can be blocked by the stopper.

Furthermore, in the present invention,
It is preferable that an alarm unit is provided that issues an alarm when the displacement / cutting device is to be switched between the working position and the non-working position in a state where the displacement frame is raised to the first raised position. It is.

  According to this feature configuration, when the discharge frame is raised to the first raised position, the discharge cutting device is to be switched between the working position and the non-working position by issuing an alarm. It can be informed to the workers.

It is a left view which shows a self removal type combine. It is a top view which shows a self removal type combine. It is a left side view showing a threshing device. It is a rear view which shows the threshing apparatus of the state which lowered the threshing drum frame. It is a rear view which shows the threshing apparatus of the state which raised the threshing drum frame. It is a top view which shows the rear part of a threshing apparatus, and a displacement delivery apparatus. It is a left view which shows the rear of a threshing apparatus in the state to which the threshing body flame | frame and the displacement frame were made to descend | fall, and a displacement transfer apparatus. It is a left view which shows the rear of a threshing apparatus in the state which raised the threshing-body flame | frame and the displacement frame, and a displacement-delivery apparatus. It is a rear view which shows the threshing apparatus in the state which lowered the threshing drum frame and the displacement frame. It is a rear view which shows the threshing apparatus in the state which raised the displacement frame and the threshing drum frame. It is a rear view which shows the displacement-delivery apparatus in the state in which a displacement frame is located in a descent | fall position. It is a rear view which shows the displacement conveying apparatus of the state which raised the displacement frame. It is an exploded perspective view showing a threshing drum frame, a displacement frame and a rear frame. It is a disassembled perspective view which shows the structure of the proximal end of a displacement frame. It is a rear view which shows a discharge conveyance apparatus and a discharge cutting device. It is an exploded perspective view showing a lock mechanism and an interlocking mechanism. It is a top view which shows the locking mechanism and interlocking mechanism in the state in which the displacement frame is located in the fall position. It is a left side view showing a lock mechanism and an interlocking mechanism in the state where a displacement frame is located in a descent position. It is a left view which shows the locking mechanism and interlocking mechanism in the state which the displacement frame lifted to the 2nd raise position. It is a left side view showing a locking mechanism and an interlocking mechanism in the state where the displacement frame was raised to the first raised position. It is a figure which shows the relationship between the position of a displacement frame, the state of a locking mechanism, and the decision | availability of switching of a displacement cutting device. It is a figure which shows the switching aspect of the displacement cutting apparatus in the state in which the displacement frame is located in the fall position. It is a figure which shows the switching aspect of the displacement cutting apparatus in the state which the displacement frame raised to the 2nd raise position. It is a figure which shows the switching aspect of the displacement cutting apparatus in the state which the displacement frame raised to the 1st raise position. It is a lock mechanism of a regulation state, and is a top view showing the state where a displacement cutting device is located in a working position. It is a lock mechanism of a regulation state, and a displacement cutting device is a top view showing the state where it is located in the 1st lock position. It is a lock mechanism of a regulation state, and is a top view showing the state where a displacement cutting device is located in a non-working position. It is a lock mechanism of a regulation state, and is a top view showing the state where a displacement cutting device is located in the 2nd lock position. It is a figure which shows the relationship between the position of a displacement cutting device, the rocking | fluctuation control of the displacement cutting device by a locking mechanism, and the warning by an alarm part. It is a figure which shows a control block. It is a figure which shows the relationship between the position of a displacement cutting apparatus, and the raising limit of a displacement frame. It is a figure which shows the relationship between the position of a displacement cutting apparatus, the position of a displacement frame, and the decision | availability of switching of a switching board. It is a figure which shows the switching limit of the raising limit of a displacement frame, and the switching plate in the state in which the displacement cutting device is located in a working position. It is a figure which shows the raising limit of the displacement frame in the state in which the displacement cutting device is located in a non-working position, and the switching aspect of a switching board. It is a figure which shows the raising limit of the displacement frame in the state in which the displacement cutting device is located in an intermediate position.

[Overall configuration of combine]
FIG. 1 and FIG. 2 show a self-eliminating type combine. The combine includes an airframe frame 1 and a traveling device 2 for supporting the airframe frame 1. A driving cabin 3 is provided on the right side at the front of the vehicle. The driving cabin 3 includes a driving unit 4 on which a driver rides, and a cabin 5 that covers the driving unit 4. Below the driving unit 4, an engine (not shown) is provided.

  In front of the driving cabin 3, a reaper 6 is provided to reap the cropped rice straw. Behind the driving cabin 3, a grain storage tank 7 for storing grains is provided. A grain discharging device 8 for discharging grains in the grain storage tank 7 is provided. At the left side of the machine body, a feed chain 9 is provided for holding and transporting the reaper. A threshing device 10 is provided on the left side of the grain storage tank 7. The threshing device 10 has a threshing cylinder 11 and threshs the reaping grain carried by the feed chain 9. On the rear side of the threshing device 10, a discharge conveyance device 12 is continuously provided. The waste transport device 12 receives the waste after the threshing process from the feed chain 9 and nips and transports the waste backward. Below the delivery end side portion of the discharge conveyance device 12, a discharge cutting device 28 for cutting the discharge waste transferred by the discharge conveyance device 12 is provided.

  The reaper 6 is configured to have a plurality of cutting specifications (for example, a six-row cutting specification). The reaper 6 includes a plurality of (for example, seven) weighing tools 13, a plurality (for example, six) of raising devices 14, a cutting device 15, and a conveying device 16. The wedging tool 13 disperses the crop of the field. The inducer 14 causes the planted cereals to be divided. The cutting device 15 cuts off the induced cereal grains. The transport device 16 transports the reaper to the threshing device 10 rearward.

[Threshing equipment etc.]
As shown in FIG. 3, at the upper part of the threshing device 10, a throttling chamber 17 is formed. A threshing cylinder 11 is provided in the throttling chamber 17. The threshing cylinder 11 is rotatable around a rotational axis Y1 extending in the longitudinal direction of the vehicle. A net 18 is provided below the threshing drum 11. At the rear of the handling chamber 17, a dust collecting fan 19 for discharging dust to the outside is provided.

  At the lower part of the threshing apparatus 10, a rocking and sorting apparatus 20 for rocking and sorting the objects to be sorted, a tile 21 for blowing the selection wind to the rocking and sorting apparatus 20, grain of the first item (grains etc.) No. 2 collection part 23 which collects the first collection part 22 which collect | recovers, and the grain (grains etc. with a branch stem) of a second thing are provided.

  The first recovery section 22 is provided with a first screw 24 for conveying the grain of the first object to the right. At the right end portion of the first screw 24, a threshing device 25 for throttling and transporting the grain of the first product to the grain storage tank 7 is interlocked and coupled.

  The second collecting portion 23 is provided with a second screw 26 for conveying a second grain to the right. At the right end of the second screw 26, a second reduction device 27 for reducing the grain of the second shot to the rocking and sorting device 20 is interlocked and connected.

  The displacement cutting device 28 has a work position located below the conveyance end side portion of the displacement conveyance device 12 around the swing axis Z1 extending in the vertical direction on the right end side, and the conveyance end of the displacement conveyance device 12 It is pivotable over a non-working position which is located away from below the side part (see FIG. 2). The drainage and cutting device 28 includes a cutter 29 for cutting the drainage, a cover 30 that covers the cutter 29, and a switching plate 31. A portion of the cover 30 located above the cutter 29 is formed with an insertion port 30 a into which the drainage is inserted. A transverse frame 32 extending in the left-right direction of the vehicle body is provided across the left side wall and the right side wall at the top of the cover 30.

  The switching plate 31 can be switched between a cutting position for opening the inlet 30a and a non-cutting position for closing the inlet 30a, and the cutting position on the rising side and the non-cutting on the lowering side around the swing axis extending in the left and right direction of the machine. It can swing open and close over the position. A motor M1 (see FIG. 30) for swinging and driving the switching plate 31 is provided on the right side of the displacement cutting device. In the state where the switching plate 31 is open (the state of the cutting position), the drainage transported by the drainage conveying device 12 is inserted into the insertion port 30 a and cut by the cutter 29. In the state where the switching plate 31 is closed (the state of the non-cutting position), the drainage transported by the drainage conveyance device 12 slips on the upper surface of the switching plate 31 and falls to the ground.

  As shown in FIGS. 3 to 5, wall portions 34 are provided at the front end portion and the rear end portion of the handling chamber 17, respectively. The front wall portion 34 constitutes a front wall portion of the processing chamber 17. The rear wall 34 constitutes a rear wall of the handling room 17. The wall portion 34 includes a movable wall 35 and a fixed wall 36. The threshing drum 11 is rotatably supported by the movable wall 35 via the threshing drum shaft 11 a. A connecting arm 37 connecting the movable wall 35 and the fixed wall 36 is provided. The movable wall 35 is supported by the fixed wall 36 so as to be vertically swingable around a swing axis Y2 extending in the longitudinal direction of the machine via the connection arm 37. A transmission shaft 38 to which the power of the engine is transmitted is provided across the front fixed wall 36 and the rear fixed wall 36. At the left and right sides of the threshing device 10, front and rear facing frames 40L and 40R extending in the longitudinal direction of the vehicle are provided.

  A threshing cylinder cover 42 covering the throttling cylinder 11 from above is provided. An upper right cover 43 is provided on the right of the threshing drum cover 42. The right upper cover 43 is supported by the right front-rear direction frame 40R so as to be swingable up and down around a swing axis extending in the longitudinal direction of the machine body.

  A threshing drum frame 44 is provided which supports the threshing drum 11 and can be pivoted up and down around a pivot axis Y2. The threshing drum frame 44 is provided with a pair of front and rear movable walls 35 and a left and front facing frame 40L. The threshing drum cover 44 is also supported by the threshing drum frame 44.

  A cylinder 45 for swinging the threshing drum frame 44 up and down is provided. The cylinder 45 is provided across the movable wall 35 on the rear side and the fixed wall 36 on the rear side. In the present embodiment, the cylinder 45 is configured by an electric cylinder.

  A threshing drum lock mechanism 46 is provided which holds the threshing drum 11 at a threshing processing position where threshing processing is performed. The threshing drum lock mechanism 46 includes a pair of front and rear hook plates 47 and a pair of threshing drum hook pins 48. A hook plate 47 is supported swingably around a swing axis Y3 extending in the longitudinal direction of the machine on the front wall 34 and the rear wall 34 respectively. At the tip of the hook plate 47, a hook portion 47a engageable with the threshing drum hook pin 48 is provided. The hook portion 47a engages with the threshing drum hook pin 48 to hold the threshing drum 11 in the threshing processing position. By releasing the engagement of the hook portion 47 a with the threshing drum hook pin 48, the throttling barrel 11 is pivoted upward by the cylinder 45 together with the throttling barrel frame 44. A motor M2 that swings and drives a pair of front and rear hook plates 47 is supported on the rear surface of the rear wall 34. The motor M2 swings the pair of front and rear hook plates 47 to the engagement side and the engagement release side.

  As shown in FIG. 6 and FIG. 7, a rear frame 41 is provided at the rear upper part of the left side of the threshing apparatus 10. The rear frame 41 is formed in a substantially U-shape projecting rearward from the rear of the threshing device 10 in a side view. The rear frame 41 is constituted by a round pipe.

  Between the upper portion 41a and the lower portion 41b of the rear frame 41, the drainage ST transported by the drainage transport device 12 passes. At a rear portion of the rear frame 41, a bent portion 41c is formed which is bent to the lateral side (left side) of the vehicle in a plan view.

  Here, when the rear portion of the rear frame 41 extends straight rearward in plan view (see the rear frame 41 drawn by a two-dot chain line shown in FIG. 6), the discharge carried by the discharge conveyance device 12 If 藁 ST is the displacement of a long grain stalk (long stalk), the stock origin of the stalk ST contacts the longitudinal portion in the rear end portion of the rear frame 41 to serve as a transport resistance, and clogging of the stalk ST May occur.

  However, according to the above configuration, since the bent portion 41 c is formed at the rear of the rear frame 41, the vertical portion 41 d at the rear end of the rear frame 41 and the discharge conveyance device 12 (the stock conveyance device 49 ) And the interval will be longer. Thereby, even if it is a long tubal drainage ST, the drainage ST can be conveyed by the drainage / conveying device 12 without the stock origin of the drainage ST contacting the vertical portion 41d. Further, by extending the rear frame 41 rearward, the space is not increased, so that the longitudinal length of the vehicle does not increase.

[Exclusion Transporter]
As shown in FIG. 6 and FIG. 7, the waste transport device 12 is discharged in a state where it is inclined so as to be positioned on one side (right side) in the left-right direction of the machine in the transport end side of the waste transport device 12 in plan view. It is supported by the frame 55. The discharge conveyance apparatus 12 is provided with a stock origin conveyance apparatus 49 for holding and conveying the stock origin side of the discharge, and a tip conveyance apparatus 50 for holding and conveying the tip side of the discharge. The stock feeding device 49 includes a drainage chain 51 with a protrusion 51 a and a drainage rail 52. The displacement rail 52 is disposed below the displacement chain 51 so as to face the lower path of the displacement chain 51. A pair of guide plates 53 for guiding the discharge chain 51 is provided at the conveyance end of the stock conveyance device 49. The tip conveying device 50 includes a drainage tip chain 54 with a tine 54a.

  An exhaust conveyance space S of the exhaust conveyance device 12 is formed at the rear of the rear wall 34. The discharge conveyance space S is formed to straddle the discharge frame 55 in the longitudinal direction of the machine body. The drainage conveyance space S is expanded so as to be positioned on the right in the conveyance direction downstream in the front and rear middle portion (portion corresponding to the front end of the inclined portion 39a) of the drainage conveyance space S in plan view. A belt transmission mechanism 58 for transmitting the power of the transmission shaft 38 to the input shaft of the displacement conveyance device 12 is provided across the transmission shaft 38 and the input shaft (not shown) of the displacement conveyance device 12.

[Exclusion frame]
As shown in FIG. 6 to FIG. 14, the displacement frame 55 is inclined so that the displacement conveyance device 12 is positioned on one side (right side) in the left-right direction of the machine toward the conveyance end side of the displacement conveyance device 12 in plan view. It can be rocked up and down around a rocking axis Y2 extending in the longitudinal direction of the machine on one side (right side) of the machine in the lateral direction of the machine. The discharge conveyance device 12 is removable from the discharge frame 55 and is suspended and supported by the discharge frame 55 via the front stay 56 and the rear stay 57.

  The displacement frame 55 is formed in a frame shape, and includes a proximal end frame portion 71, a front frame portion 72, a rear frame portion 73, and a free end frame portion 74. A single round pipe is bent to form a front frame portion 72, a rear frame portion 73, and a free end frame portion 74. The proximal end of the front frame portion 72 and the proximal end of the rear frame portion 73 are bent toward the rear side and the front side, respectively. A space is provided between the proximal end of the front frame portion 72 and the proximal end of the rear frame portion 73.

  The proximal end frame portion 71 is provided across the proximal end portion of the front frame portion 72 and the proximal end portion of the rear frame portion 73. The proximal end frame portion 71 is fixed to the proximal end portion of the front frame portion 72 and the proximal end portion of the rear frame portion 73 from the lower side. The proximal end frame portion 71 is constituted by a square pipe.

  The displacement frame 55 is supported by the pair of front and rear stays 78 via a support shaft 76 so as to be vertically swingable around a swing axis Y2. The support shaft 76 is disposed on the same swing axis Y2 as the transmission shaft 38. The spindle 76 is fixed to the stay 83. The stay 83 is fixed to the proximal end frame portion 71. The pair of front and rear stays 78 are bolted to the bracket 87. The bracket 87 is vertically provided on the lower surface of the right front-rear direction frame 40R.

  The discharge frame 55 has a lowered position at which the discharge and transfer device 12 transports discharges and an elevated position at which the discharge and discharge devices 12 do not transfer discharges (a first raised position and a second raised position described later) It is possible to rock up and down around the rocking axis Y2. A connecting portion 60 is provided for releasably connecting the threshing drum frame 44 and the discharge frame 55. In a state where the threshing drum frame 44 and the discharge frame 55 are connected by the connecting portion 60, the threshing drum frame 44 and the discharge frame 55 can be integrally vertically oscillated by the cylinder 45.

  The first lifting position (the lifting position corresponding to the first lifting angle α shown in FIG. 15) and the second lifting position lower than the first lifting position (the second lifting position shown in FIG. 15) An ascending position corresponding to the angle β) is set. The first raised position is a position at which clogging removal of the threshing cylinder 11 can be performed. The second elevation position is a position where the conveyance end side portion of the discharge conveying apparatus 12 does not interfere with the discharge cutting apparatus 28 (refer to FIG. 8), and is a position where clogging removal of the discharge conveying apparatus 12 can be performed is there.

  The connecting portion 60 includes a first bracket 61 fixed to the left front-rear direction frame 40L, a second bracket 62 fixed to the free end frame portion 74, and the first bracket 61 and the second bracket 62. And a connecting plate 63 for connecting the The connection plate 63 is bolted to the first bracket 61 and the second bracket 62, respectively.

[Inner locking mechanism for the displacement frame]
As shown in FIGS. 9 to 14, an inner locking mechanism 93 is provided for holding the proximal end portion of the discharge frame 55 at the right front-rear direction frame 40R with the discharge frame 55 in the lowered position. ing. The inner locking mechanism 93 comprises an inner hook 94 and an inner hook pin 95. The inner hook 94 is supported by the proximal frame portion 71. The inner hook pin 95 is supported by the right front-rear direction frame 40R.

  As shown in FIG. 11, the proximal end side portion of the discharge frame 55 is locked by the inner hook 94 engaging with the inner hook pin 95 following the swinging of the discharge frame 55 to the lowered position side. The position is held by the mechanism 93 on the right front-rear direction frame 40R. Then, as shown in FIG. 12, as the displacement frame 55 swings to the raised position side and the engagement of the inner hook 94 with the inner hook pin 95 is released, the position holding by the inner lock mechanism 93 is performed. Is released.

[Outside lock mechanism for the threshing drum frame]
As shown in FIG. 6 to FIG. 10 and FIG. 13, an outer side locking mechanism 96 is provided for holding the left front-to-rear direction frame 40L in position with the rear frame 41 with the throttling barrel frame 44 in the lowered position. The outer locking mechanism 96 comprises an outer hook 97 and an outer hook pin 98. The outer hook 97 is supported by the left front-rear direction frame 40L. The outer hook pin 98 is supported by the rear frame 41.

  A link mechanism 109 is provided which interlocks and links the threshing drum lock mechanism 46 (the rear hook plate 47) and the outer lock mechanism 96 (the outer hook 97). The link mechanism 109 includes a first link arm 110, a second link arm 111, and a link rod 112. The first link arm 110 is connected to the proximal end of the rear hook plate 47 so as to be relatively swingable. The first link arm 110 and the second link arm 111 are connected so as to be relatively swingable. The second link arm 111 is connected to the front end of the link rod 112 so as not to allow relative swing. An outer hook 97 is connected to the rear end of the link rod 112 so as not to allow relative swing.

  As shown in FIG. 9, the hook plate 47 (hook portion 47 a) is engaged with the threshing drum hook pin 48 by the pair of front and rear hook plates 47 being pivoted to the engagement side by the motor M 2. Then, the swinging of the rear hook plate 47 to the engagement side is transmitted to the outer hook 97 through the link mechanism 109, thereby interlocking with the swinging of the rear hook plate 47 to the engagement side. Thus, the outer hook 97 is swung to the engagement side. In this way, the left and right front frame 40L is held in position by the outer locking mechanism 96 on the rear frame 41 by the outer hook 97 being engaged.

  Then, as shown in FIG. 10, the motor M2 swings the pair of front and rear hook plates 47 toward the engagement release side, whereby the engagement of the hook plate 47 (hook portion 47a) with the threshing drum hook pin 48 is released. Ru. Then, the swinging of the rear hook plate 47 to the engagement release side is transmitted to the outer hook 97 through the link mechanism 109, whereby the swinging of the rear hook plate 47 to the engagement release side is performed. In conjunction, the outer hook 97 is swung to the disengagement side. Thus, when the outer hook 97 is in the disengaged state, the position holding by the outer locking mechanism 96 is released.

[Swaying structure of displacement cutting device]
As shown in FIG. 6 and FIG. 15 to FIG. 18, the displacement cutting device 28 is supported by the support 113 so as to be swingable around the swing axis Z1. The support column 113 is provided with a pair of upper and lower support shafts 114. The support 113 is provided with a support portion 115 for supporting the support shaft 114.

  A frame 116 having a circular cross section extending in the vertical direction, a plate 117 rotatably connected to the upper support shaft 114, and a lower support shaft 114 can be rotated on the right side of the exhaust cutting device 28 And a bracket 118 connected in the state. The plate 117 is fixed to the frame 116 so as to swing integrally with the frame 116 around the swing axis Z1.

  An angle detection sensor 119 is provided for detecting the swing angle of the displacement and cutting device 28 about the swing axis Z1. The angle detection sensor 119 is configured by a potentiometer. The angle detection sensor 119 includes a rocking detection arm 119a. The detection arm 119 a is in contact with the frame 116.

[Locking mechanism for displacement cutting device]
As shown in FIG. 6 and FIG. 15 to FIG. 18, the swinging of the displacement cutting device 28 from the working position to the non-working position and the swinging of the displacement cutting device 28 from the non-working position to the working position A locking mechanism 120 is provided to regulate the The lock mechanism 120 can be switched between a non-regulating state in which the swinging of the displacement-cutting device 28 is not regulated and a regulated state in which the swinging of the displacement-cutting device 28 is regulated. The lock mechanism 120 includes a plate 117 and a cam 121.

  The cam 121 is supported by the shaft portion 122 so as to be swingable around a swing axis X1 extending in the left-right direction of the machine body. The shaft portion 122 protrudes leftward from the left side portion of the upper support portion 115. The cam 121 is prevented from coming off by a bolt 123 and a plain washer 124 in a state of being externally fitted to the shaft portion 122.

  A torsion spring 125 is provided to urge the cam 121 toward the initial position. A stopper 126 is provided to abut in a state where the cam 121 is at the initial position. The torsion spring 125 is externally fitted to the shaft portion 122, and one end thereof is engaged with the cam 121 and the other end is engaged with the stopper 126. The cam 121 is urged toward the initial position by the torsion spring 125 and is held in the initial position by abutting on the stopper 126.

  An interlocking mechanism 127 is provided to interlock the restricting operation of the lock mechanism 120 with the raising operation of the discharge frame 55 so that the lock mechanism 120 restricts the swinging of the discharge cutting device 28 interlocked with the upward movement of the discharge frame 55 It is done. The interlocking mechanism 127 includes a cable wire 128 extending between the displacement frame 55 and the cam 121. The cable wire 128 is routed along an inclined portion 39 a of the right side wall 39 of the threshing apparatus 10 which is inclined so as to be positioned on the right side toward the rear side. The cable wire 128 includes an inner wire 128a and an outer wire 128b. The end of the inner wire 128 a on the side of the discharge frame 55 is connected to the stay 129. The stay 129 is bolted to the stay 130. The stay 130 is bolted to the stay 83. The end of the outer wire 128 b on the side of the discharge frame 55 is supported by the stay 79. The stay 79 is bolted to the rear stay 78. The end of the inner wire 128 a on the cam 121 side is connected to the cam 121. The end of the outer wire 128 b on the cam 121 side is supported by the stay 131. The stay 131 is fixed to the left side portion of the upper support portion 115.

  As shown in FIG. 18, in the state where the evacuation frame 55 is in the lowered position, the cam 121 is held in the initial position. In the state shown in FIG. 18, the cam 121 is located below the lower surface of the plate 117 within the rotation trajectory of the tip end 117 a of the plate 117. For this reason, even if the plate 117 rotates around the swing axis Z1, it does not contact the cam 121, and the swing of the displacement cutting device 28 is not restricted. Thus, as shown in FIG. 21 and FIG. 22, when the displacement frame 55 is in the lowered position, the lock mechanism 120 is in the non-restricted state, and the displacement / cutting device 28 is in the working position and not in operation. You can switch to position.

  Then, as shown in FIG. 19, when the displacement frame 55 ascends to the second raised position, the cam 121 resists the biasing force of the torsion spring 125 in conjunction with the rising of the displacement frame 55, and the cable wire It is swung upward to the position shown in FIG. In the state shown in FIG. 19, the cam 121 is located below the lower surface of the plate 117 within the rotation trajectory of the tip end 117 a of the plate 117. At this time, the flat surface 121 a of the cam 121 is substantially parallel to the lower surface of the plate 117. For this reason, even if the plate 117 rotates around the swing axis Z1, it does not contact the cam 121, and the swing of the displacement cutting device 28 is not restricted. Thus, as shown in FIG. 21 and FIG. 23, in the state where the discharge frame 55 is raised to the second raised position, the lock mechanism 120 is in the non-restricted state, and the discharge cutting device 28 is set to the working position. It can be switched to the non-working position.

  Then, as shown in FIG. 20, when the displacement frame 55 ascends to the first elevation position, the cam 121 resists the biasing force of the torsion spring 125 in conjunction with the elevation of the displacement frame 55, and the cable wire It is swung upward to the position shown in FIG. In the state shown in FIG. 20, the cam 121 is in the upper side of the lower surface of the plate 117 within the rotation trajectory of the tip end 117 a of the plate 117. For this reason, when the plate 117 rotates around the swing axis Z1, it abuts on the cam 121, and the swing of the displacement cutting device 28 is restricted. Thus, as shown in FIG. 21 and FIG. 24, in the state where the discharge frame 55 is raised to the first raised position, the lock mechanism 120 is in the restricted state, and the discharge cutting device 28 is not in the working position. You can not switch to the working position.

  As shown in FIG. 25, when the lock mechanism 120 is switched to the restricted state in a state where the drainage cutting device 28 is located at the working position, the drainage cutting device 28 can be switched from the working position to the non-working position Can not. More specifically, as shown in FIG. 26, when the lock mechanism 120 is swung from the working position to the non-working position while the lock mechanism 120 is in the restricted state, the plate 117 moves from the working position to the first locking position. The first contact surface 117 b of the plate 117 abuts on the cam 121 at the stage of swinging by one allowable angle θ 1. Thus, when the first contact surface 117b of the plate 117 abuts on the cam 121, the displacement and cutting device 28 is prevented from further swinging toward the non-working position.

  As shown in FIG. 27, when the lock mechanism 120 is switched to the restricted state in a state where the drainage cutting device 28 is located at the non-working position, switching the drainage cutting device 28 from the non-working position to the working position I can not More specifically, as shown in FIG. 28, when the lock mechanism 120 is swung from the non-working position to the working position while the lock mechanism 120 is in the restricted state, the plate 117 moves from the non-working position to the second lock position. At the stage of swinging the second allowable angle θ2, the second contact surface 117c of the plate 117 contacts the cam 121. Thus, when the second contact surface 117c of the plate 117 abuts on the cam 121, the displacement cutting device 28 is prevented from further swinging to the working position.

  That is, as shown in FIG. 29, the lock mechanism 120 allows the displacement cutting device 28 to swing from the working position toward the non-working position by a predetermined angular range (first allowable angle θ1) in the restricted state. Also, the displacement and cutting device 28 is allowed to swing from the non-working position toward the working position by a predetermined angular range (second allowable angle θ2). The second allowable angle θ2 is set to be larger than the first allowable angle θ1.

[Control block]
As shown in FIG. 30, in the control block, the control device 132, the cylinder 45, the motor M1, the motor M2, the alarm unit 133, the elevation switch 134 for operating the cylinder 45, and the switching for operating the motor M1. A switch 135, an angle detection sensor 119 detecting a swing angle around the swing axis Z1 of the displacement cutting device 28, and an angle detection sensor detecting a swing angle around the swing axis Y2 of the discharge frame 55 136, and are included.

  The raising and lowering switch 134 is a raising command for raising the threshing drum frame 44 and the displacement frame 55 by the extension operation of the cylinder 45, and a lowering command for lowering the threshing drum frame 44 and the displacement frame 55 by the reduction operation of the cylinder 45. It emits. The raising and lowering switch 134 includes a rising operation unit that issues a rising command, and a lowering operation unit that issues a falling command. The threshing drum frame 44 and the displacement frame 55 are lifted only while the elevating operation portion is pushed, and the threshing cylinder frame 44 and the displacement frame 55 are lowered only while the elevating operation portion is pushed. Do.

  The switching switch 135 issues a switching command to switch the switching plate 31 between the cutting position and the non-cutting position by the motor M1. The alarm unit 133 can be configured by, for example, an audio output device (such as a speaker) or a display device (such as a display or a rotating light). The control device 132 includes an elevation control unit 137, a switching control unit 138, and an alarm control unit 139.

  The elevation control unit 137 performs elevation control of the cylinder 45 in accordance with the command of the elevation switch 134. As shown in FIG. 31 and FIG. 33, when the lifting and lowering switch 134 issues a lifting command to raise to the first lifting position with the displacement and cutting device 28 positioned at the working position, the lifting and lowering control unit 137 The weir frame 55 is raised to the first elevation position. Similarly, as shown in FIGS. 31 and 34, when the lifting and lowering switch 134 issues an elevation command to raise to the first elevation position while the displacement and cutting device 28 is in the non-working position, the elevation control unit 137 lifts the displacement frame 55 to the first raised position.

  However, as shown in FIG. 31 and FIG. 35, the state in which the drainage cutting device 28 is located in the middle between the working position and the non-working position (even in the non-working position and not the working position Even when the lift switch 134 issues a lift command to raise the first lift position to the first lift position when the lift switch 134 is not positioned (hereinafter referred to as “intermediate position”), the lift control unit 137 can Not raise to the first elevation position. That is, in a state in which the discharge and cutting device 28 is positioned at the intermediate position, the discharge frame 55 is raised only to the second raised position even if a lift command to raise the first lift position is issued by the lift switch 134. I can not do it.

  Here, when raising / lowering the displacement frame 55 to the first elevation position, the elevation control unit 137 does not raise the displacement frame 55 to the first elevation position at a stroke, and the displacement frame 55 is at the second elevation position. Pause. Then, after the temporary stop, when a lift command to raise to the first lift position is issued by the lift switch 134, the lift control unit 137 lifts the displacement frame 55 from the second lift position to the first lift position. On the other hand, when lowering the displacement frame 55 from the first raising position to the lowering position, the elevation control unit 137 makes a rapid lowering from the first raising position to the lowering position.

  The switching control unit 138 performs switching control of the motor M <b> 1 in accordance with the command of the switching switch 135. As shown in FIG. 32 and FIG. 34, in the state where the drainage cutting device 28 is located at the non-working position, the drainage frame 55 is lifted to any position of the first lifting position and the second lifting position Even in this case, when the switching command is issued by the switching switch 135, the switching control unit 138 switches the switching plate 31 between the cutting position and the non-cutting position. However, as shown in FIGS. 32 and 33, in the state where the drainage cutting device 28 is located at the working position, the drainage frame 55 is raised to any position of the first raising position and the second raising position. Even in the case where the switching command is issued by the switching switch 135, the switching control unit 138 does not switch the switching plate 31 between the cutting position and the non-cutting position.

  The alarm control unit 139 performs alarm control of the alarm unit 133. When the discharge frame 55 is temporarily stopped at the second raised position, the alarm control unit 139 issues an alarm by the alarm unit 133 to notify that the temporary stop has been performed. The alarm control unit 139 causes the alarm unit 133 to issue an alarm when the displacement / cutting device 28 is to be switched between the working position and the non-working position in a state where the displacement frame 55 is raised to the first raised position.

  More specifically, as shown in FIG. 29, in the state where the displacement frame 55 is raised to the first raised position, when the displacement / cutting device 28 is swung from the working position to the non-working position, the alarm control unit In 139, the alarm unit 133 performs an alarm before reaching the first lock position (between the work position and the first lock position). In the state where the displacement frame 55 is raised to the first raised position, when the displacement / cutting device 28 is swung from the non-working position toward the working position, the alarm control unit 139 generates the second alarm by the alarm unit 133. It takes place before reaching the lock position (between the non-working position and the second lock position).

[Bracket for angle detection sensor]
As shown in FIG. 16, a bracket 140 to which the angle detection sensor 119 is attached is provided. The bracket 140 is bolted to the stay 141. The stay 141 is fixed to the lower portion of the upper support portion 115. That is, the angle detection sensor 119 is provided on the upper support portion 115 that swingably supports the displacement cutting device 28. The bracket 140 is provided with a stopper 140a that prevents the detection arm 119a from swinging so that the detection arm 119a does not swing out of the detection range from the initial position. The detection arm 119a contacts the stopper 140a at the initial position, and the stopper 140a prevents the rocking from being rocked out of the detection range from the initial position.

  Here, as described above, the detection arm 119a is in contact with the frame 116. However, if the stopper 140a is not provided, the exhaust cutting device 28 is removed from the pair of upper and lower support shafts 114. In this case, there is no target with which the detection arm 119a contacts. Then, the detection arm 119a is swung from the initial position to the outside of the detection range, and there is a concern that the raising and lowering of the displacement frame 55 may be disturbed. For example, when the detection arm 119a swings from the initial position to the outside of the detection range and the detection value of the angle detection sensor 119 indicates the detection value of the state where the discharge / cutting device 28 is positioned at the middle position, The weir frame 55 can not be raised to the first elevation position.

  However, according to the above configuration, even if the exhaust cutting device 28 is removed from the pair of upper and lower support shafts 114, the stopper 140a remains on the machine body side, whereby the swing of the detection arm 119a is caused by the stopper 140a. Since it is blocked, the above-mentioned inconvenience can be avoided.

[Another embodiment]
(1) In the above embodiment, a mechanical lock mechanism is employed as the “lock mechanism” for the drainage cutting device 28. For example, the drainage cutting device 28 uses a motor for working and non-working positions. When it is configured to be switched to, the lock mechanism by the control device 132 may be adopted as the “lock mechanism” for the drainage cutting device 28.

(2) In the above embodiment, the first lifting position and the second lifting position lower than the first lifting position are set as the lifting limit of the displacement frame 55, but in addition to this, the second lifting position A rising position lower than the rising position or a rising position lower than the first rising position and higher than the second rising position may be set.

(3) In the above embodiment, when the discharge frame 55 is raised to the first raised position, the discharge frame 55 is configured to be temporarily stopped at the second raised position. It may be configured to ascend at a stretch to the first elevation position.

(4) In the above embodiment, when the evacuation frame 55 is lowered from the first raising position to the lowering position, the evacuation frame 55 is configured to descend at a stretch from the first raising position to the lowering position. The displacement frame 55 may be configured to pause at the second raised position.

(5) In the above embodiment, the lock mechanism 120 allows the displacement cutting device 28 to swing from the working position toward the non-working position by a predetermined angular range (first allowable angle θ1) in the restricted state, Also, the displacement and cutting device 28 is allowed to swing from the non-working position toward the working position by a predetermined angular range (second allowable angle θ2). However, in the restricted state, the lock mechanism 120 allows the displacement cutting device 28 to swing from the working position toward the non-working position by a certain angle range, and the displacement cutting device 28 works from the non-working position It is not necessary to allow the position side to swing by a certain angle range. Alternatively, the lock mechanism 120 does not allow the displacement cutting device 28 to swing from the working position to the non-working position side by a certain angle range in the restricted state, and the displacement cutting device 28 from the non-working position It may be permitted to swing to the working position side by a certain angle range. Alternatively, the lock mechanism 120 does not allow the displacement cutting device 28 to swing from the working position to the non-working position side by a certain angle range in the restricted state, and the displacement cutting device 28 from the non-working position It is not necessary to allow the working position to swing by a certain angular range.

  The present invention is applicable to combine harvesters (for example, self-contained combine harvesters).

9 feed chain 10 threshing device 11 threshing drum 12 displacement conveying device 28 displacement cutting device 55 displacement frame 115 support portion 119 angle detection sensor 119a detection arm 120 lock mechanism 127 interlocking mechanism 133 alarm portion 140 bracket 140a stopper Y2 pivot shaft Center Z1 Swing axis center θ1 First allowable angle θ2 Second allowable angle

Claims (7)

A feed chain for holding and transporting a reaper
A threshing device having a threshing cylinder and threshing a reaping cropping grain carried by the feed chain;
A waste transport device which is connected to the rear side of the threshing device and receives the waste after threshing treatment from the feed chain and nips and transports it backward;
And a drainage / cutting device provided under the conveyance end side portion of the drainage / conveying device and cutting the drainage conveyed by the drainage / conveying device,
The displacement cutting device has a work position located below the transport end side portion of the displacement and transport device around a swing axis extending vertically in the left and right end portions, and the transport end of the displacement and transport device Swingable over a non-working position located away from below the side part,
The exhaust transport device is supported in an inclined state so as to be positioned on one side in the left-right direction of the machine toward the transport end side of the discharge transport device in plan view and extends in the front-rear direction on the one side in the left-right direction A displacement frame is provided which can be pivoted up and down around the pivot axis,
As a rising limit of the displacement frame, at least a first rising position and a second rising position lower than the first rising position are set.
In the state where the displacement frame is raised to the second raised position, the displacement / cutting device can be switched between the working position and the non-working position,
The combine which can not switch the displacement-cutting device between the working position and the non-working position when the displacement frame is raised to the first raised position.   A lock mechanism is provided which restricts the swinging of the displacement cutting device from the working position to the non-working position and the swinging of the displacement cutting device from the non-working position to the working position. The combine according to claim 1.   An interlocking mechanism is provided which interlocks the restraining operation of the lock mechanism with the elevating operation of the eliminator frame so that the lock mechanism restraining the swing of the eliminator cutting device interlockingly with the elevating of the eliminator frame The combine according to claim 2.   The combine according to claim 2 or 3, wherein the lock mechanism allows the displacement and cutting device to swing by a predetermined angular range in a state in which the displacement of the displacement and cutting device is regulated. An angle detection sensor for detecting a swing angle of the displacement cutting device is provided.
The combine according to any one of claims 1 to 4 in which said angle detection sensor is provided in a support part which supports said displacement cutting device so that rocking movement is possible. A bracket on which the angle detection sensor is mounted;
The angle detection sensor has a rocking detection arm,
The combine according to claim 5, wherein the bracket is provided with a stopper that prevents the detection arm from swinging so that the detection arm does not swing out of the detection range from the initial position. In the state where the displacement frame is raised to the first raised position, an alarm unit is provided which issues an alarm when the displacement / cutting device is to be switched to the working position and the non-working position. The combine according to any one of 1 to 6.

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