KR102652658B1 - Combine - Google Patents

Abstract

In the case where a jamming support occurs in a feed chain, it is desired to be able to perform a hassle-free removal of the clamping support.
The threshing device is provided with an upper side threshing divider body that supports a rail stand that supports a fitting support rail installed opposite to the upper side of the barrel and feed chain, and the upper side threshing divider body is driven by an electric hydraulic cylinder 38. A blocking switching operating mechanism that is configured to be able to swing up and down around the front and rear axis and can switch the feed chain clutch to the blocking state, a stop switch 108 that can command the drive stop of the feed chain by manual operation, and a stop switch 108. Based on the operation, a control device 43 operates the blocking motor 100 in the blocking switching operation mechanism and operates the electric hydraulic cylinder 38 to switch the upper threshing dividing body to the raised position. It is provided.

Description

Combine {COMBINE}

The present invention relates to a combine equipped with a threshing device that skims the ear end side of a harvested grain stalk transported by a feed chain using a barrel and water net installed in a processing chamber.

In the above-mentioned combine, conventionally, the upper side threshing splitting body supporting the rail base supporting the fitting support rail installed oppositely to the upper side of the barrel and the feed chain in the threshing device is supported so as to be able to swing up and down around the front and rear axis of the body. The upper threshing splitter was configured to be able to be operated to swing up and down by a hydraulic cylinder as a lifting actuator based on a command from a manual operation switch provided in the operating unit (see, for example, patent document 1).

On the other hand, unlike the configuration described in Patent Document 1, an electromagnetically operated feed chain clutch is provided in the power transmission system for the feed chain, and the feed chain clutch is blocked based on the operation of a manual operation switch installed on the lateral side wall of the threshing device. It was configured to be able to switch between states (for example, see Patent Document 2).

Japanese Patent Publication No. 2001-190136 Japanese Patent Publication No. 2000-279020

In the above-described conventional configuration, when running is stopped and threshing is being processed, when the grain stem causes a conveyance blockage or the like while being conveyed by the feed chain, the feed chain is operated by operation of the manual operation switch installed on the lateral side wall of the threshing device. Operation may be stopped. However, simply by stopping the operation of the feed chain, it is not possible to remove the stuck supports such as clogged grain culms that are blocked in the feed chain. Therefore, after stopping the feed chain, by operating the operation switch provided on the operating unit to raise the upper threshing dividing body, the clamping support rail is separated from the feed chain and the barrel rises, thereby removing the clamping support. can do.

In this manner, in the conventional configuration, manual switch operation had to be performed multiple times, each separately, at different locations, requiring cumbersome labor.

Therefore, when a situation occurs in the feed chain in which the proper conveyance state cannot be continued due to the jamming support being full, etc., it is desired to be able to perform the work of removing the clamping support without hassle.

The characteristic configuration of the combine according to the present invention is:

A threshing device is provided for skimming the end side of the harvested grain stalk conveyed by the feed chain using a barrel and water net installed in the processing chamber,

The threshing device is provided with an upper side threshing partition body supporting a rail stand supporting a fitting support rail installed opposite to the barrel and the upper side of the feed chain, and the upper side threshing partition body is arranged around the center of the front and rear axes of the body. , It is configured to be able to swing up and down between the normal working position on the lower side and the raised position that swings upward,

It is a combine equipped with an elevating actuator capable of moving the upper threshing divider up and down,

A feed chain clutch that can be switched between a transmission state that transmits power to the feed chain and a blocking state that blocks power to the feed chain,

a blocking switching operation mechanism capable of switching the feed chain clutch to the blocking state;

A stop command operation tool capable of commanding the feed chain to stop driving through manual operation;

Based on the operation of the stop command operation tool, a control device is provided that operates the blocking switching operation mechanism and operates the lifting actuator to switch the upper threshing dividing body to the raised position.

According to the present invention, for example, when the grain stem causes a conveyance blockage during conveyance by a feed chain, the operator operates the stop command operation tool by manual operation. When a drive stop is commanded by the stop command operation tool, the control device operates the cut-off switching operation mechanism to switch the feed chain clutch to the cut-off state, and operates the lifting actuator to perform normal work on the upper threshing section. Transition from position to raised position.

In this way, when the operator operates the stop command operation tool, the operation of the feed chain stops, the upper threshing divider rises, the insertion support rail becomes separated from the feed chain, and the barrel moves upward to make the feed chamber. This is open. So the operator can remove the fitting support stuck in the feed chain.

Therefore, when a situation occurs in the feed chain in which the appropriate conveyance state cannot be continued due to the jamming fixture being full or the like, it has become possible to perform the work of removing the clamping fixture without hassle.

In the present invention, it is suitable if an engine is provided as a power source for driving each part of the body, and the control device stops the operation of the engine based on the operation of the stop command operation tool.

According to this configuration, the operation of the engine is stopped and the rotation of the quick start is stopped based on the operation of the stop command operation tool, so the work of removing the clamping object becomes easy to perform.

In the present invention, it is suitable if the lifting actuator is an electric actuator.

According to this configuration, the upper threshing splitter can be raised by the electric actuator regardless of whether the engine is running or not. Therefore, while stopping the rotation of the barrel, the upper threshing splitter can be raised from the normal working position until it reaches the raised position. The cause of the barrel rotating during the raising operation of the upper threshing splitter is the cause of the fitting support. Removal work is not hindered.

In the present invention,

An opening command operation tool capable of commanding the opening of the feeding chamber through manual operation is provided,

When the opening command operation tool is operated, the control device controls the operation of the lifting actuator to raise the upper threshing section to the maintenance lifting position for opening the processing chamber, and also operates the stop command operation. When the sphere is operated, it is suitable to control the operation of the lifting actuator so as to raise the upper threshing dividing body by a second operating amount less than the first operating amount corresponding to the maintenance lifting position.

Since maintenance work involves tasks such as cleaning or replacing parts inside the feeding chamber, it is necessary to open the feeding chamber significantly. In contrast, the stop command operation tool is operated when removing an insert in the feed chain while threshing work is in full swing, and there is no need to open the processing chamber to a large extent.

Therefore, according to this configuration, when performing maintenance work, the operator operates the opening command operation tool. When opening is commanded by the opening command operation tool, the control device operates the lifting actuator and raises the upper threshing division body to the maintenance lifting position. This large opening makes it easy to perform maintenance work.

When the stop command operation tool is operated and the upper threshing dividing body is raised, only the 2nd operation quantity less than the 1st operation quantity corresponding to the maintenance raising position is raised. Thereby, the insertion support for the feed chain can be efficiently removed without raising it more than necessary.

In this way, by varying the amount of elevation of the upper threshing split body according to the difference in work, maintenance work is easy to perform, and it has become possible to perform the work of removing the clamping support efficiently.

In the present invention, it is suitable if there is provided a braking mechanism that applies a braking force to the rotation of the feed chain when the blocking switching operation mechanism is operated to switch the feed chain clutch to the blocking state.

According to this configuration, when the cut-off switching operation mechanism is activated, power transmission to the feed chain is blocked and a braking force is applied, so that rotation due to inertial force can be prevented and the feed chain can be stopped quickly and reliably.

Figure 1 is an overall side view of the combine.
Figure 2 is an overall plan view of the combine.
Figure 3 is a longitudinal rear view of the threshing device.
Figure 4 is a longitudinal rear view of the threshing device in a state switched to the raised position.
Figure 5 is a side view of the threshing device.
Figure 6 is a cross-sectional view of the power transmission mechanism for the feed chain.
Fig. 7 is a side view showing the cut-off switching operating mechanism.
Fig. 8 is a plan view showing the cut-off switching operation mechanism in the delivery state.
Fig. 9 is a plan view showing the cut-off switching operating mechanism in a state switched to the cut-off state by the command stop operating mechanism.
Fig. 10 is a plan view showing the blocking switching operating mechanism in a state switched to the blocking state by the linked stopping operating mechanism.
Fig. 11 is a side view showing the interlocking stop operation mechanism.
Figure 12 is a control block diagram.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the combine which concerns on this invention is described based on drawing.

〔Overall composition〕

As shown in FIGS. 1 and 2, the combine according to the present invention is an example in which the planted grain culm is harvested from the front part of the self-propelled traveling body 2 by a pair of left and right crawler traveling devices 1, 1. Mounting (3) is provided. On the right side of the front part of the traveling body 2, an operating unit 5 surrounded by a cabin 4 is provided. At the rear of the operating unit 5, a threshing device 6 for threshing the grain stem harvested by the reaping unit 3 and a grain tank 7 for storing the grains obtained by the threshing process are arranged in the horizontal direction. It is placed. An engine 9 as a power source for driving each part of the aircraft is provided below the driver's seat 8 in the operating unit 5.

In this embodiment, when defining the forward and backward direction of the aircraft, it is defined along the moving direction of the aircraft in the working state, and when defining the left and right directions of the aircraft, left and right are defined as seen from the moving direction of the aircraft. That is, the direction indicated by symbol (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by symbol (B) in Figures 1 and 2 is the rear side of the aircraft. The direction indicated by symbol (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by symbol (R) in FIG. 2 is the right side of the aircraft.

The reaping unit 3 includes a cutting tool 10 that guides the base of the planted grain stem to be harvested, a plurality of erection devices 11 that raise the divided planted grain stem to the longitudinal position, and cuts the base of the erected planted grain stem. It is equipped with a varican type reaping device 12 that transports the reaping grain rearward while changing its posture from a longitudinal posture to a gradually falling sideways posture and supplies it to the threshing device 6, etc. are provided. The upper side of the transfer device 13 is covered with a dustproof cover 14.

The left side of the threshing device 6 is equipped with a feed chain 15 that conveys the harvested grain stem to the threshing device 6, and a clamping support rail 16 installed to oppose the upper side thereof. At the rear of the threshing device 6, a discharge straw cutter 17 is provided for cutting the straw discharged from the threshing device 6. The grain tank 7 is equipped with a grain discharge device 18 that discharges the grains stored in the grain tank 7 to the outside of the device.

[Threshing device]

The threshing device 6 carries out a threshing process on the tip side of the harvested grain stem within the processing chamber 19 while sandwiching and transporting the bottom side of the harvested grain stem with the feed chain 15 and the clamping rail 16. A barrel 20 is installed in the feeding chamber 19. As shown in FIG. 3, the barrel 20 can rotate around a rotation axis Y1 extending in the forward and backward directions of the body. Below the barrel 20, a water net 21 is installed. At the rear of the processing chamber 19, an exhaust fan 22 is provided to discharge dust to the outside (see Fig. 5). The left outer side of the threshing device 6 is covered with an exterior cover 23.

As shown in FIG. 5, the lower part of the threshing device 6 is provided with a sorting unit 24 that sorts the threshed material that has leaked from the water net 21 into grains, second material, discharged straw scraps, etc. . The sorting unit 24 includes a oscillating sorting device 25 that sorts the sorting object through a sieve while transporting it to the rear of the aircraft, a tuyere 26 that blows a sorting wind to the oscillating sorting device 25, and grains of No. 1 (single-grained grains). etc.), a No. 1 recovery unit 27, which recovers the No. 2 grains (grains with abrasives, etc.), a No. 2 recovery unit 28, etc. are installed.

The threshing device 6 is equipped with an upper threshing partition body 30 having a barrel 20 and a rail stand 29 for supporting the fitting support rail 16, and the upper threshing partition body 30 is further provided. , It is configured to be able to swing up and down around the front and rear axis (Y2) of the fuselage, between the normal working position on the lower side and the rising position that swings upward.

To further explain, wall portions 31 are provided at the front and rear ends of the processing chamber 19, respectively. As shown in FIG. 3, the wall portion 31 is provided with a movable wall 32 and a fixed wall 33. On the movable wall 32, the barrel 20 is supported so that the barrel shaft 20a is rotatable via a bearing member 34. A connecting arm 35 connecting the movable wall 32 and the fixed wall 33 is provided. The movable wall 32 is supported on the fixed wall 33 via a connecting arm 35 so as to be able to swing up and down around the axis Y2 along the front and rear direction of the body.

A rectangular cylindrical frame 36 is temporarily connected to the upper portions on the left side (feed chain 15 side) of the movable walls 32 on both front and rear sides. Rails 29 are supported across the left lower portions of the movable walls 32 on both front and rear sides. A ceiling plate 37 is installed across the upper ends of the movable walls 32 on both front and back sides, and the ceiling plate 37 is fixedly installed on the movable walls 32 on both front and rear sides.

Accordingly, the barrel 20, the rail 29, the ceiling plate 37, the front-to-back frame 36, etc. are integrally connected to form the upper threshing division body 30.

An electric hydraulic cylinder 38 is provided as an elevating actuator capable of swinging the upper threshing division body 30 between the normal working position and the elevated position. The electric hydraulic cylinder 38 is connected to the connecting arm 35 in the rear wall 31 and the fixed wall 33. The electric hydraulic cylinder 38 includes a hydraulic cylinder 39, a hydraulic pump 40 that supplies hydraulic oil to the hydraulic cylinder 39, an electric motor 41 that drives the hydraulic pump 40, and a hydraulic cylinder 39. It consists of a hydraulic unit (not shown) for control. When power is supplied to the electric motor 41, the hydraulic cylinder 39 expands and contracts, and the upper threshing splitter 30 is configured to be electrically operated to move up and down.

A height sensor 42 of a potentiometer type for detecting the vertical swing position of the upper threshing partition body 30 is provided at the position of the swing support point of the upper threshing partition body 30. Additionally, as shown in FIG. 12, a control device 43 is provided to control the operation of the electric hydraulic cylinder 38. The control device 43 is comprised of a microcomputer.

As shown in FIG. 12, there is a rising switch 44 as an opening command operation tool that commands a raising operation, a lowering switch 46 that commands a lowering operation, and a level setter 45 that commands one of a plurality of positions. ) is provided. The up switch 44, the down switch 46, and the level setter 45 are provided in the operating unit 5, for example.

The control device 43 operates the electric hydraulic cylinder 38 to raise the upper threshing splitter 30 to the maintenance lifting position for opening the processing chamber 19 based on the operation of the raising switch 44. It is configured to control. The maintenance elevation position is a position where the processing chamber 19 is opened so that cleaning work, etc. inside the processing chamber 19 can be performed. Any of a plurality of levels can be set as the rising position for maintenance using the level setter 45.

When the raising switch 44 is operated, the control device 43 raises the upper threshing section 30 until the height detected by the height sensor 42 becomes the setting position set by the level setter 45. I order it. Additionally, the control device 43 controls the operation of the electric hydraulic cylinder 38 so that when the lowering switch 46 is operated, the upper threshing splitter 30 is lowered to the normal working position.

A locking mechanism 130 is installed to maintain the upper threshing splitter 30 in its normal working position. The locking mechanism 130 includes a pair of front and rear hook plates 131 and a pair of front and rear locking pins 132. On each of the front and rear wall portions 31, a hook plate 131 is supported so as to be able to swing around a swing axis Y3 extending in the front and rear direction of the body. A hook portion 131a that can be coupled to the locking pin 132 is provided at the distal end of the hook plate 131. By engaging the hook portion 131a with the locking pin 132, the upper threshing division body 30 is maintained in position. By releasing the hook portion 131a from the locking pin 132, it becomes possible to swing upward. A motor M that swings and drives the pair of front and rear hook plates 131 is supported on the rear surface of the wall 31 on the rear side. By the motor M, the pair of front and rear hook plates 131 are rocked to the engaging side and the disengaging side.

[Power transmission structure for the feed chain]

As shown in FIG. 5, the feed chain 15 is wound around a drive sprocket 47 located on the rear side and a driven sprocket 48 located on the front side. A feed chain clutch 49 is provided that can be switched between a transmission state that transmits power to the feed chain 15 and a blocking state that blocks power to the feed chain 15. The feed chain clutch 49 is provided on a drive shaft 50 (an example of a power transmission shaft) that rotatably supports the drive sprocket 47.

As shown in FIG. 6, power from the engine 9 is transmitted to the feed chain clutch 49 through the power transmission case 54. Describing the power transmission case 54 in detail, power from the engine 9 is transmitted to the relay shaft 53 through the power transmission belt 51 and the input pulley 52, and the relay shaft 53 It is transmitted to the rotation shaft 57 of the exhaust fan 22 through gears 55 and 56. In addition, the power from the rotation shaft 57 is transmitted to the drive gear 59 externally inserted to be rotatable relative to the drive shaft 50 through a two-stage reduction gear mechanism 58. Power from the drive gear 59 is intermittently transmitted to the drive sprocket 47 of the feed chain 15 through the feed chain clutch 49.

A driven-side shift member 60 is splined and fitted externally to the drive shaft 50 so that it can rotate integrally and move in the axis direction. On the surface of the drive gear 59 opposite to the driven-side shift member 60, a drive-side engaging portion 61 consisting of a hook portion for engaging is formed. On the surface of the driven shift member 60 opposite to the drive gear 59, a driven engaging part 62 consisting of a hook for engaging is formed. The feed chain clutch 49 is comprised of a driving side engaging portion 61 and a driven side engaging portion 62. Power from the reduction gear mechanism 58 is transmitted to the drive gear 59, and power from the drive gear 59 is transmitted through the feed chain clutch 49, through the drive shaft 50 and the drive sprocket 47. It is transmitted to the feed chain (15). Accordingly, the drive gear 59 and the driven shift member 60 correspond to a pair of clutch members.

The feed chain clutch 49 has a transmission state in which the driven-side shift member 60 moves toward the driving gear 59 and the driving-side engaging portion 61 and the driven-side engaging portion 62 engage, and the driven-side shift member (60) can move toward the drive sprocket 47 to switch to a blocking state in which the drive side engaging portion 61 and the driven side engaging portion 62 release engagement. A coil spring 63 that moves and presses the driven shift member 60 toward the driving gear 59 is externally inserted into the drive shaft 50. That is, the driven-side shift member 60 is pressed toward the clutch-on position.

A multi-plate friction braking mechanism 64 is installed at a location on the drive sprocket 47 side with respect to the driven shift member 60 on the drive shaft 50. The braking mechanism 64 is configured to apply a braking force to the driven shift member 60 when the driven shift member 60 is operated to the off position by an external operating force as described later. there is.

Next, the operating structure of the feed chain clutch 49 will be described.

An operation unit 65 capable of switching between the on position corresponding to the transmission state of the feed chain clutch 49 and the off position corresponding to the blocking state, and the operation unit 65 based on an artificial stop command to operate the feed chain clutch ( A command stop operation mechanism 66 is provided to switch 49) to the blocking state. Therefore, the operation unit 65 and the command stop operation mechanism 66 constitute a cut-off switching operation mechanism 67 capable of switching the feed chain clutch 49 to the cut-off state.

〔Control panel〕

The operation unit 65 will be described.

6 to 8, the operating unit 65 includes a shifter member 68 as a shift fork-type operating member that can separate and operate the driving gear 59 and the driven shift member 60, and a shifter member ( A clutch operation arm (equivalent to the arm in the present invention) 69 that can rotate integrally with the shifter member 68 is provided around the rotation axis of the 68). The shifter member 68 is accommodated in the power transmission case 54. The shifter member 68 is coupled to a support shaft portion 68a supported on the power transmission case 54 so as to be rotatable around an axis Y4 along the rear upward incline direction and an outer peripheral portion of the driven shift member 60. It has an engaging operation portion 68b.

A clutch operation arm 69 is rotatably connected to a portion of the support shaft portion 68a that protrudes outward from the power transmission case 54. The clutch operating arm 69 is formed in a linearly extending strip shape, and its longitudinal middle portion is connected to the support shaft portion 68a. The clutch operation arm 69 is installed so that the longitudinal direction substantially follows the side wall 6A of the threshing apparatus 6, and is aiming at compactization of the installation space in the left and right directions.

Since the driven shift member 60 is pressed to move toward the driving gear 59 by the pressing force of the coil spring 63, the clutch operating arm 69 is rotationally pressed to the on position (transmission state). When the clutch operating arm 69 is rotated in a predetermined direction, specifically to the left when viewed from the plane shown in FIG. 8, by an operating force from the outside, the engaging operating portion 68b engages the driven shift member 60. It is configured to allow shift operation in the direction of release.

[Command stop operation mechanism]

Next, the command stop operation mechanism 66 will be explained.

As shown in FIGS. 7 and 8, the command stop operation mechanism 66 includes a blocking coil spring 70 as a pressing mechanism that presses the operation unit 65 to be switched to the off position, and a blocking coil spring 70 that presses the operation unit 65 to the on position. A position holding mechanism 71 that maintains the position, a linkage mechanism 72, a position holding mechanism 71 that links the operating unit 65 and the position holding mechanism 71 and receives a pressing force from the blocking coil spring 70. ), and a release mechanism 73 that releases the position maintenance of the operation unit 65 in the on position by ) is provided. The blocking coil spring 70 has a pressing force greater than the pressing force of the coil spring 63 that urges the driven-side shift member 60 toward the clutch-on position.

The linkage mechanism 72 will be described.

As shown in FIGS. 7 and 8, the linkage mechanism 72 engages to maintain the operation unit 65 in the on position by the position maintenance mechanism 71, and maintains the position by the release mechanism 73. When released, the clutch operation arm 69 is pressed by the pressing force of the blocking coil spring 70.

The linkage mechanism 72 is provided with a straight horizontal link 74 capable of sliding in the horizontal direction and a pressing link 75 that presses the clutch operation arm 69 by sliding the horizontal link 74. . A compression link 75 is linked to one end of the horizontal link 74, and a position holding mechanism 71 is linked to the other end of the horizontal link 74.

The horizontal link 74 is installed in a state extending in the front-back direction along 6A of side walls of the threshing apparatus 6. A groove-shaped guide member 76 is provided to slideably support the horizontal link 74 in the front-back direction. The guide member 76 is fixed to 6A of side walls of the threshing device 6. Support shafts 77a and 77b penetrating in the vertical direction are fixedly mounted on both sides of the horizontal link 74 in the longitudinal direction (front-back direction). The support shafts 77a and 77b on both front and rear sides are each provided with guide rollers 78 at their lower portions. The guide roller 78 is located inside the guide member 76 and guides the movement while rolling on the inner surface of the guide member 76. The end of the compression link 75 is pivotally connected to the upper part of the support shaft 77a on the front side. The end of the position holding mechanism 71 is pivotally connected to the upper part of the support shaft 77b on the rear side.

The compression link 75 is provided with three compression arms 80, 81, and 82 that can rotate integrally on a rotational support shaft 79 in the vertical direction. The rotational support shaft 79 is supported rotatably around the upper and lower shaft center X1 by the boss portion 83 fixed to 6A of side walls of the threshing device 6. One end of the blocking coil spring 70 is hung on the swinging end of the first compression arm 80. The swing end of the second pressing arm 81 is provided with an operating pin 84 for command stopping that exerts a pressing effect on the clutch operating arm 69. A longitudinal connecting shaft 85 is provided at the swing end of the third pressing arm 82, and the boss portion 87 provided on one end of the interlocking link 86 can be rotated with respect to this connecting shaft 85. It is connected. The boss portion 88 on the other end side of the interlocking link 86 is rotatably connected to the support shaft 77 on the front side of the horizontal link 74.

As shown in FIG. 8, when the first compression arm 80 is oscillated and pressed toward the front side by the pressing force of the blocking coil spring 70, the command stop operation pin 84 provided on the second compression arm 81 ) acts in the direction of pressing the clutch operation arm 69, and the third pressing arm 82 presses the support shaft 77 on the front side of the horizontal link 74 diagonally to the right. The force that acts The pressing operation force acts to slide the horizontal link 74 toward the rear.

However, the horizontal link 74 is prevented from moving to the rear side by the position holding mechanism 71 and is maintained at the front slide position. In the position holding state, the command stop operation pin 84 does not press the clutch operation arm 69, and the clutch operation arm 69 is maintained in the on position.

The position maintaining mechanism 71 will be described.

As shown in FIGS. 7 and 8, the position holding mechanism 71 is a horizontal link 74 on which a force is applied to slide toward the rear by the urging force of the blocking coil spring 70 as described above. is held in position on the front side to maintain the clutch operation arm 69 in the on position. The position holding mechanism 71 is provided with a first holding arm 89 connected to the rear side of the horizontal link 74 and a second holding arm 90 connected to the release mechanism 73 side. .

A boss portion 91 is provided at one end of the first holding arm 89, and the boss portion 91 is positioned around the upper and lower axis center X2 on the support shaft 77b on the rear side of the horizontal link 74. It is connected so that it can be rocked. A boss portion 92 is provided at the other end of the first holding arm 89, and the boss portion 92 can swing relative to the connecting shaft 93 provided at one end of the second holding arm 90. It is connected. Between the first holding arm 89 and the second holding arm 90, there is a spring 94 that presses the first holding arm 89 and the second holding arm 90 to bend and swing toward the front side. This kidney is installed.

The support shaft 96 is supported in a position-fixed state by the bracket 95 fixed to the side wall 6A of the threshing device 6. At the other end of the second holding arm 90, a boss portion 97 is integrally installed and rotatably externally fitted to the support shaft 96. A connecting arm 98 to which the release mechanism 73 is connected is integrally installed on the boss portion 97.

The second holding arm 90 is provided with an abutment regulating portion 99 that comes into contact with the end edge of the first holding arm 89 and regulates the relative rocking toward the front side. The pivot connection point X3 of the first holding arm 89 and the second holding arm 90 is connected to the swing axis ), the abutment regulating portion 99 abuts against the end edge of the first holding arm 89 and moves further forward toward the front side than the virtual line connecting the swing axis center X4 of the other end of ). The bending fluctuations of are regulated. In a state in which the relative rocking toward the front side is regulated by the abutment regulating portion 99, the position of the horizontal link 74 pressed to move backward is regulated and is in a position maintained state.

The release mechanism 73 will be described.

As shown in Figures 7 and 8, the release mechanism 73 includes an electric motor for switching the blocking (hereinafter referred to as a blocking motor) 100 as an actuator, a motor for blocking 100, and a position holding mechanism ( A release operating wire 101 as a wire member linking 71) and a potentiometer 102 for detecting the operating amount of the blocking motor 100 are provided. The motor 100 for blocking and the potentiometer 102 are installed on the installation plate 103 supported by 6 A of side walls of the threshing device 6.

The first motor arm 104 and the second motor arm 105 are rotatably connected to the output shaft 100a in the left and right directions of the blocking motor 100. One end of the release operation wire 101 is connected to the connecting arm 98, and the other end is connected to the first motor arm 104. When the blocking motor 100 operates to rotate the first motor arm 104, the release operation wire 101 is pulled and the second holding arm 90 is connected to the first holding arm 89. It can be rocked to the side where the regulation state is released in contact with the.

The release operation wire 101 is provided with an inner wire 101a and an outer wire 101b. Both ends of the outer wire 101b are supported by wire stays 106a and 106b. One end of the inner wire 101a is connected to the connection arm 98. The other end of the inner wire 101a is connected to the first motor arm 104.

A detection arm 107 is installed in the potentiometer 102 to be able to swing. When the second motor arm 105 swings, it comes into contact with the contact portion 107a installed on the detection arm 107, and the detection arm 107 swings integrally to change the swing angle of the second motor arm 105. It can be detected. The swing angle of the second motor arm 105 corresponds to the amount of pulling operation of the release operation wire 101 by the blocking motor 100.

As shown in FIG. 1, in the exterior cover 23 of the threshing device 6, a stop switch as a stop command operation tool that can be manually pressed from the outside of the body is placed at a location close to the conveyance start end of the feed chain 15. (108) is installed. The release mechanism 73 is configured to perform a release operation based on the operation of the stop switch 108. The control operation of the control device 43 based on the operation of the stop switch 108 will be described later.

The release operation wire 101 is pulled, causing the second holding arm 90 to swing, and the pivot connection point When located on the rear side of the imaginary line connecting the swing axis X2 of one end of the holding arm 89 and the swing axis X4 of the other end of the second holding arm 90, the first holding arm ( 89) and the second holding arm 90 are bent toward the rear side, allowing the horizontal link 74 to slide toward the rear side. Since the horizontal link 74 is always exerted in the direction of moving toward the rear by the pressing force of the blocking coil spring 70, if the pivot connection point , the horizontal link 74 moves quickly rearward. As a result, position maintenance by the position maintenance mechanism 71 is released.

When the position holding by the position holding mechanism 71 is released, the second pressing arm 81, that is, the command stop operation pin 84, swings in a direction to press the clutch operation arm 69. As a result, the shifter member 68 rotates to shift the driven shift member 60 to switch the feed chain clutch 49 to the blocked state.

The driven shift member 60 is switched to the blocking state and is pressed against the braking mechanism 64 by the pressing force of the blocking coil spring 70, thereby providing braking force. Rotation due to the inertial force of the feed chain 15 can be suppressed and stopped quickly. In this way, when the feed chain clutch 49 is stopped by the command stop operation mechanism 66, the stop state is maintained until the position holding mechanism 71 is operated to return to the position holding state. After the position holding mechanism 71 is returned to the position holding state, the first holding arm 89 and the second holding arm 90 are bent toward the front side and oscillated by the pressing force of the spring 94. returns to the status quo.

As shown in FIG. 8, the release operation wire 101 is installed in a state parallel to the horizontal link 74 in plan view, and is a power transmission belt as an endless rotating body that transmits power to the drive shaft 50. 51) is passed up and down using the space between the horizontal link 74 and the release operation wire 101.

[Interlocking stop operation mechanism]

When the reaping unit 3 is raised to a predetermined height position (non-reaping work position) or higher, an interlocking stop operation mechanism 109 is provided to switch the feed chain clutch 49 to the blocking state by operating the operation unit 65. there is. As shown in FIG. 11, the linked stop operation mechanism 109 includes a swing arm 110 that swings with the raising and lowering of the reaping unit 3, and a pressing action portion that exerts pressure on the clutch operation arm 69 ( 111), and an interlocking operation wire 112 linking the rocking arm 110 and the pressing portion 111.

The rocking arm 110 is supported so as to rock around the rocking axis X5 in the left and right directions. The swing arm 110 switches between the raised position Pr and the lowered position Pd according to the raising and lowering of the harvesting unit 3. Specifically, the rocking arm 110 switches to the raised position Pr when the reaping unit 3 rises to the non-reaping work position, and when the reaping unit 3 lowers to the reaping work position, the lowering position ( converted to Pd).

As shown in FIG. 8, the pressing action portion 111 is installed at a location close to the longitudinal direction of the clutch operation arm 69 on the opposite side to the side on which the command stop operation pin 84 acts. there is. The pressing portion 111 includes a support shaft 113 fixed and supported on the side wall 6A of the threshing device 6, a boss portion 114 rotatably externally fitted to the support shaft 113, and a boss portion. Two arms 115, 116 extending radially outward in a substantially L-shape in plan view with different positions in the circumferential direction from the outer periphery of 114, and a return spring 117 are provided.

One of the two arms, the first arm 115, extends integrally from the boss portion 114 toward the left. A linked operation wire 112 is connected to the swing end of the first arm 115 via a spring 119 for absorbing stroke. The second arm 116, the other of the two arms, extends integrally from the boss portion 114 toward the rear side. An operation pin 120 for interlocking stop that can be pressed against the clutch operation arm 69 is provided at the swing end of the second arm 116.

The pressing portion 111 is configured to move the first arm 115 and the second arm 116 around the axis swings in the direction In connection with this, the operation pin 120 for interlocking stop swings in the direction of pressing the clutch operation arm 69. As a result, the shifter member 68 rotates to shift the driven shift member 60 to switch the feed chain clutch 49 to the blocked state.

In this case as well, as in the case of the command stop operation mechanism 66, the driven shift member 60 switches to the blocking state, and the blocking coil spring 70 is pressed against the braking mechanism 64 by a large pressing force. This provides braking power. By braking, the rotation due to the inertial force of the feed chain 15 can be suppressed and stopped quickly.

When the interlocking operation wire 112 is not pulled, the interlocking stop operation pin 120 moves in a direction away from the clutch operation arm 69 due to the pressing force of the return spring 117, and the clutch operation arm 69 moves. (69) is returned to the on position by the pressing force of the coil spring (63).

[Buffering mechanism]

The buffer mechanism in connection with the operation unit 65 in the command stop operation mechanism 66 and the linked stop operation mechanism 109 will be described.

A first buffering mechanism (K1) linking the command stop operating mechanism (66) to the operating unit (65) and a second buffering mechanism (K2) linking the linked stop operating mechanism (109) to the operating unit (65) are provided, The first buffer mechanism K1 and the second buffer mechanism K2 apply the operating force of one of the command stop operation mechanism 66 and the linked stop operation mechanism 109 when one of the mechanisms switches to the blocking state. , it is configured not to transmit the command to the other of the stop operation mechanism 66 and the linked stop operation mechanism 109.

To add explanation, as described above, the command stop operation pin 84 in the command stop operation mechanism 66 abuts against the clutch operation arm 69 in the operation unit 65 to press and move it. The mechanism is the first buffer mechanism K1. In addition, the mechanism for pressing and moving the interlocking stop operation pin 120 in the interlocking stop operation mechanism 109 by abutting against the clutch operation arm 69 in the operation unit 65 is the second buffer mechanism K2. )am.

When the switching operation by the linked stop operation mechanism 109 is performed, the first buffer mechanism K1 separates the command stop operation mechanism 66 from the clutch operation arm 69, as shown in FIG. 10, The operating force of the linked stop operation mechanism 109 is not transmitted to the command stop operation mechanism 66. In addition, the second buffer mechanism K2 separates the linked stop operation mechanism 109 from the clutch operation arm 69, as shown in FIG. 9, when a switching operation is performed by the command stop operation mechanism 66. Thus, the operating force of the command stop operation mechanism 66 is not transmitted to the linked stop operation mechanism 109.

The operation unit 65 is configured to switch the feed chain clutch 49 to the blocked state by rotating the clutch operation arm 69 in a predetermined direction (left direction in FIG. 8). When the command stop operation pin 84 abuts against the clutch operation arm 69 and presses and moves it to rotate in a predetermined direction, the interlocking stop operation pin 120 is separated from the clutch operation arm 69, so that the interlocking stop operation is operated. No operating force is transmitted to the pin 120.

When the interlocking stop operation pin 120 abuts against the clutch operation arm 69 and presses and moves it to rotate in a predetermined direction, the command stop operation pin 84 is separated from the clutch operation arm 69, so that the command stop operation is operated. No operating force is transmitted to the pin 84.

Therefore, switching the feed chain clutch 49 to the blocking state when the reaping unit 3 rises to a predetermined height position and stopping the feed chain clutch 49 when it is operating independently are smooth and separate. And it can be done quickly.

〔Control configuration〕

As shown in FIG. 12, an engine control unit 121 is provided to control the operating state of the engine 9, and the control device 43 commands control information to the engine control unit 121 according to the work situation. It is written as . And when the feed chain 15 rotates and the threshing device 6 is operating, when the stop switch 108 is operated by the operator, the control device 43 blocks the stop switch 108 based on the operation of the stop switch 108. Feed chain stop processing to stop driving the feed chain 15 by operating the release mechanism 73 in the switching operation mechanism 67, engine stop processing to stop operation of the engine 9, upper threshing splitter ( 30) is configured to execute each of the threshing unit raising processes to switch to the raised position.

The feed chain stop processing is explained.

The control device 43 sets a preset position in order to cancel the contact regulation state of the second holding arm 90 with the first holding arm 89 based on the detection value of the potentiometer 102. The blocking motor 100 is operated to move to . As a result, the release operating wire 101 is pulled, the position holding in the position holding mechanism 71 is released, and the feed chain clutch 49 is switched to the blocking state.

Engine stop processing is explained.

The control device 43 instructs the engine control unit 121 with control information for stopping the operation of the engine 9. The engine control unit 121 stops the operation of the engine 9 by, for example, manipulating a fuel shutoff valve provided in the fuel supply path to stop the fuel supply to the engine 9.

The threshing unit raising process will be explained.

Based on the detection value of the height sensor 42, the control device 43 uses an electric hydraulic cylinder to raise the upper threshing splitter 30 by a second operating amount less than the first operating amount corresponding to the maintenance lifting position. Controls the operation of (38) (see Figure 4). The maintenance rising position can be set in a plurality of steps by the level setter 45, but the second operation variable is a small operation variable that is lower than any of the plurality of maintenance raising positions. When operating the stop switch 108, there are many cases in which clamping objects such as grain stems and foreign substances caught in the feed chain 15 are removed, and the second set amount is set to the lifting amount necessary to remove the clamping objects. In addition, the lifting position for maintenance is not shown, but at this raising position for maintenance, the water net 21 and barrel 20 inside the processing chamber 19 can be cleaned and parts replaced, etc. It is open.

[Other Embodiments]

(1) In the above embodiment, the control device 43 is configured to stop the operation of the engine 9 based on the operation of the stop switch 108. However, even if the stop switch (stop command operation tool) is operated, the engine 9 You may not stop the operation of (9).

(2) In the above embodiment, the cutoff switching operation mechanism 67 has a shifter member 68 (shift fork type operation member) and a clutch operation arm 69, and is pressed while the clutch operation arm 69 is in contact with each other. It was configured to switch the feed chain clutch 49 by moving it, but instead of this configuration, for example, a configuration having flexibility through a long hole for operation in a predetermined direction by combining a pin and a long hole, or an electromagnetic solenoid. Various configurations can be adopted, such as a configuration in which the feed chain clutch 49 is switched to the blocking state by shifting the clutch member.

(3) In the above embodiment, the lifting actuator is shown to be composed of an electric hydraulic cylinder 38, but instead of this configuration, it may be composed of an electric cylinder equipped with an electric motor and a screw feed mechanism, and the engine It may be a hydraulic cylinder in which operating oil is supplied from a hydraulic pump driven by (9).

(4) In the above embodiment, a braking mechanism 64 is provided for applying a braking force to the rotation of the feed chain 15 when the blocking switching operation mechanism 67 is operated to switch the feed chain 15 to the blocking state. Although this configuration is used, it may also be configured without such a braking mechanism 64.

The present invention can be applied to a combine equipped with a threshing device that skims the ear end side of the harvested grain stalk conveyed by the feed chain with a barrel and water net installed in the processing chamber.

6: Threshing device
9: engine
15: feed chain
16: Fitting support rail
19: emergency room
30: Upper threshing splitter
38: Lifting actuator (electric hydraulic cylinder)
43: control device
44: Open command operation port (rising switch)
49: Feed chain clutch
64: braking mechanism
67: Blocking switching operation mechanism
108: Stop command operation tool (stop switch)

Claims (5)

A threshing device is provided for skimming the end side of the harvested grain stalk conveyed by the feed chain using a barrel and water net installed in the processing chamber,
The threshing device is provided with an upper side threshing divider that supports a rail stand that supports the barrel and a fitting support rail provided opposite to the upper side of the feed chain, and the upper side threshing divider is located around the center of the front and rear axes of the body. It is configured to be able to swing up and down between a normal working position on the lower side and a raised position that swings upward,
It is a combine equipped with an elevating actuator capable of moving the upper threshing divider up and down,
a feed chain clutch capable of switching between a transmission state for transmitting power to the feed chain and a blocking state for blocking power to the feed chain;
a blocking switching operation mechanism capable of switching the feed chain clutch to the blocking state;
A stop command operation tool capable of commanding the feed chain to stop driving through manual operation;
The combine is provided with a control device that operates the blocking switching operation mechanism based on the operation of the stop command operation tool and operates the lifting actuator to switch the upper threshing dividing body to the raised position. According to paragraph 1,
An engine is provided as a power source to drive each part of the aircraft,
A combine in which the control device stops operation of the engine based on an operation of the stop command operation tool. According to claim 1 or 2,
A combine in which the lifting actuator is an electric actuator. According to claim 1 or 2,
An opening command operation tool capable of commanding the opening of the feeding chamber through manual operation is provided,
When the opening command operation tool is operated, the control device controls the operation of the lifting actuator to raise the upper threshing section to the maintenance lifting position for opening the processing chamber, and also operates the stop command operation. A combine that controls the operation of the lifting actuator so that when the sphere is operated, the upper threshing dividing body is raised by a second operating amount less than the first operating amount corresponding to the maintenance lifting position. According to claim 1 or 2,
A combine provided with a braking mechanism that applies a braking force to rotation of the feed chain when the blocking switching operation mechanism is operated to switch the feed chain clutch to the blocking state.

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