JP2014068568A - Corn harvesting machine - Google Patents

Abstract

An object of the present invention is to provide a corn harvester that eliminates the troublesome operation and is excellent in operability.
A residue processing device provided on a traveling vehicle body so as to be movable up and down, an actuator C3 that can drive the residue processing device up and down, and a lift processing tool 63 for handling residue that commands a lifting operation of the actuator C3. The shift operation tool 26 for commanding the traveling speed of the traveling vehicle body is provided, and the raising / lowering command tool 63 for residue processing is provided in the shift operation tool 26.
[Selection] Figure 8

Description

  The present invention relates to a corn harvester for harvesting corn.

  The corn harvester harvests corn while running the traveling vehicle body, and performs processing such as cutting or chopping the stems remaining in the field. And in the conventional corn harvester, such a residue processing apparatus was comprised in the traveling vehicle body so that raising / lowering was possible (for example, refer patent document 1). Although a detailed configuration is not described in Patent Document 1, an operating tool for raising and lowering the residue processing apparatus is provided as an operating tool separate from the operating tool for operating the traveling vehicle body. .

JP 2011-92135 A

  When performing a harvesting operation with a corn harvester, the harvesting operation is performed while the traveling vehicle body is traveling. At that time, the driver changes the operating state of the vehicle body operation tool, for example, the traveling state of the vehicle body. The operation is performed while manually operating the shift lever and the steering lever for changing the direction of the vehicle body.

However, in the above-described conventional configuration, the operating tool for raising and lowering the residue processing device is provided as an operating tool separate from the operating tool for operating the traveling vehicle body, and therefore has the following disadvantages: there were.
That is, when it is necessary to change the raising / lowering position of the residue processing device while the traveling vehicle body is traveling, the driver once removes the hand from the operation tool for vehicle body operation, and the residue processing device There is a disadvantage that the operation tool for moving up and down has to be operated by changing the hand, which is troublesome in this respect.

  An object of the present invention is to provide a corn harvester that eliminates the troublesome operation and is excellent in operability.

  The characteristic configuration of the corn harvesting machine according to the present invention includes a residue processing device that can be moved up and down on a traveling vehicle body, an actuator that can drive the residue processing device up and down, and a residue that commands the lifting operation of the actuator. A lifting / lowering command tool for processing and a shift operating tool for commanding the traveling speed of the traveling vehicle body are provided, and a lifting / lowering command tool for residual processing is provided in the shift operating tool.

  According to this configuration, when the driver is moving the traveling vehicle body while manually operating the speed change operation tool, when the lift position of the residue processing device needs to be changed, the lift command for residue processing Since the gear is provided in the speed change operation tool, the driver can operate the raising / lowering command tool for residue processing without releasing his / her hand from the speed change operation tool.

  In other words, even when the lifting / lowering position of the residue processing device needs to be changed while the traveling vehicle body is traveling, the driver once lifts his / her hand from the speed change operation tool to lift / lower the residue processing device. The raising / lowering position of the residue processing apparatus can be changed without troublesome operations such as changing the hand of the command tool.

  Accordingly, it has been possible to eliminate the troublesome operation and provide a corn harvester with excellent operability.

  In the present invention, a residue processing device provided on a traveling vehicle body so as to be movable up and down, an actuator capable of driving the residue processing device up and down, and an elevator commanding tool for residue processing for instructing a lifting operation of the actuator, It is preferable that a steering operation tool for performing a direction change operation of the traveling vehicle body is provided, and the raising / lowering command tool for the residue processing is provided in the steering operation tool.

  According to this configuration, when the driver is moving the traveling vehicle body while manually operating the steering operation tool, when the lifting position of the residue processing device needs to be changed, the lifting / lowering for residue processing is performed. Since the steering tool is provided in the steering operation tool, the driver can operate the raising / lowering command tool for residue processing without releasing the hand from the steering operation tool.

  In other words, even when it is necessary to change the raising / lowering position of the residue processing device when the traveling vehicle body is traveling, the driver once releases the steering operation tool, The raising / lowering position of the residue processing apparatus can be changed in a state where there is no troublesome operation such as changing the hand to the raising / lowering commanding tool.

  In the present invention, it is preferable that the raising / lowering command tool for residue processing is constituted by a push-operated switch.

  According to this configuration, the raising / lowering command tool for the residue processing is a push-operated switch, so that the operation for the steering can be performed without releasing the hand from the steering operating tool (shifting control tool or steering control tool). It is possible to operate the raising / lowering command tool for residue processing by a simple operation of pushing the tool with a finger while holding the tool.

  In the present invention, it is preferable that the ascending / descending command tool for the residue processing is constituted by a balance swinging push operation switch that can be neutrally returned.

  According to this configuration, when operating the raising / lowering command tool for the residue processing, by pressing either the one side operation position or the other side operation position where the balance can be swung from the neutral return state. The ascending operation or the descending operation of the residue processing device can be performed. For example, if the one-side operation position is pushed, the ascending operation is performed, and if the other-side operation position is pushed, the descending operation is performed.

  If comprised in this way, it will become easy to recognize which operation position of the one side operation position or the other side operation position corresponds to the raising operation or the lowering operation from the neutral return state. Compared to a configuration in which an operation switch for instructing the operation and an operation switch for instructing the lowering are provided separately, erroneous operation is reduced.

  In the present invention, it is preferable that the traveling vehicle is provided with a harvesting device that can be driven up and down, and a lifting command tool for the harvesting device that commands a lifting operation of the harvesting device is provided in the shift operation tool.

  According to this configuration, since the shift commanding tool for the harvesting device is provided in the shift operation tool, the lifting position of the harvesting device can be set when the driver is traveling the traveling vehicle body while manually operating the shift control tool. When the driver needs to be changed, the driver can operate the raising / lowering command tool for the harvesting device without releasing his / her hand from the speed change operation tool.

  In other words, even when it is necessary to change the raising / lowering position of the harvesting device when the traveling vehicle body is running, the driver once releases the gear shifting operation tool, and the raising / lowering command tool for the harvesting device is used. The raising / lowering position of the harvesting device can be changed without troublesome operations such as changing hands.

  Therefore, not only when operating the raising / lowering commanding tool for residue processing, but also when operating the lifting / lowering commanding tool for the harvesting device, the troublesomeness of the operation can be eliminated, and the operability is further improved. Can be achieved.

  In the present invention, it is preferable that the traveling vehicle is provided with a harvesting device that can be driven up and down, and a lifting command tool for the harvesting device that commands a lifting operation of the harvesting device is provided in the steering operation tool. .

  According to this configuration, since the steering command tool for the harvesting device is provided in the steering operation tool, when the driver is traveling the traveling vehicle body while operating the steering control tool by hand, When it is necessary to change the raising / lowering position, the driver can operate the raising / lowering command tool for the harvesting device without releasing his / her hand from the steering operation tool.

  In other words, even when it is necessary to change the raising / lowering position of the harvesting device when the traveling vehicle body is running, the driver once releases the steering operation tool to raise / lower the harvesting device. The raising / lowering position of the harvesting device can be changed in a state where there is no troublesome operation such as changing the hand to the tool.

  Therefore, not only when operating the raising / lowering commanding tool for residue processing, but also when operating the lifting / lowering commanding tool for the harvesting device, the troublesomeness of the operation can be eliminated, and the operability is further improved. Can be achieved.

  In the present invention, it is preferable that the raising / lowering command tool for the harvesting device is constituted by a push-operated switch.

  According to this configuration, since the raising / lowering command tool for the harvesting device is a push-operated switch, the steering operation tool can be used without removing the hand from the steering operation tool (transmission operation tool or steering operation tool). It is possible to operate the raising / lowering command tool for the harvesting device by a simple operation of pushing with a finger while holding the.

  In the present invention, it is preferable that the raising / lowering commanding tool for the harvesting device is constituted by a balance swinging push operation switch that can be neutrally returned.

  According to this configuration, when operating the raising / lowering command tool for the residue processing, by pushing the direction of any operation direction by swinging the balance from the neutral return state, The ascending operation and the descending operation can be performed.

  With this configuration, it is easy to recognize whether the operation is ascending or descending when operated in any operating direction from the neutral state.For example, an operation switch for instructing ascent and an operation switch for instructing descending are provided. Compared to a separate device, there is less risk of erroneous operation.

  In the present invention, when the traveling state of the traveling vehicle body is in the reverse traveling state, the forcibly raising means for raising the residue processing device to the non-working high position regardless of the command state of the raising / lowering command tool for residue processing. Is preferably provided.

According to this configuration, when the traveling state of the traveling vehicle body changes to the reverse traveling state, the forcible raising means raises the residue processing device to the non-working high position.
When the traveling vehicle body travels backward, no residue processing work is performed. However, if the residue processing device is at a low position, there is a risk of contact with the ground and damage.
However, according to this configuration, in the reverse traveling state, the residue processing device is raised to the non-working high position, so that such disadvantages can be avoided in advance.

  In the present invention, when the traveling state of the traveling vehicle body becomes a non-working high speed state, the residue processing device is raised to a non-working high position regardless of the command state of the lifting / lowering command tool for residue processing. It is preferable that a forced raising means is provided.

  For example, when the traveling vehicle is traveling in a non-working high speed state, such as when traveling on the road, the residue processing work is not performed, but if the residue processing device is at a low position, There is a risk of contact damage.

  However, according to this configuration, when the vehicle is traveling in a non-working high-speed state, the residue disposal device is raised to the non-working high position by the forcibly raising means, so that the disadvantages described above are obviated. Can be avoided.

  In the present invention, it is preferable that a ground height detecting means for detecting the ground height of the residue processing device and a display means for displaying a detection result of the ground height detecting means are provided.

  According to this configuration, since the ground height of the residue processing device is detected by the ground height detection means, and the detection result is displayed by the display means, the driver can display the residue processing device by displaying the display means. Since the height to the ground is known, the operation can be easily performed so as to obtain an appropriate height.

  In the present invention, it is preferable that a power interrupting means capable of intermittently supplying power to the residue treatment apparatus is provided.

  According to this configuration, the power supply to the residue processing apparatus can be interrupted by the power interrupting means. Therefore, unnecessary power consumption can be suppressed by supplying power when the residue processing work is performed and cutting off the power supply when the residue processing work is not performed.

  In the present invention, it is preferable that the power interrupting means is configured to be switchable between a power shut-off state and a power transmission state based on an operation of a manual operation tool.

  According to this configuration, by operating the manual operation tool, the power interrupting means can be switched between the power cutoff state and the power transmission state, so that the operator operates according to the work situation at that time, It is possible to switch to a state suitable for the work situation.

  In the present invention, the power interrupting means switches to the power shut-off state when the residue processing device is raised to the non-working high position, and the power transmission state when the residue processing device is lowered to the work low position. It is preferable that the supply of power to the residue processing device is intermittently interlocked with the raising / lowering operation of the residue processing device.

  According to this configuration, the power interrupting means automatically switches with the raising / lowering operation of the residue processing device, so there is no trouble of switching by manual operation, there is no disadvantage of forgetting to switch, etc. It can be switched to a suitable state.

It is a right view of a corn harvester. It is a top view of a corn harvester. It is a left view of a corn harvester. It is a side view which shows the raising / lowering operation state of a residue processing apparatus. It is a top view of a counter shaft arrangement | positioning part. It is a perspective view which shows a clutch operation structure. It is a perspective view of the grip part of the main transmission lever. It is a control block diagram. It is a perspective view of a steering handle. It is a side view which shows the raising / lowering operation state of the residue processing apparatus of another embodiment. It is a side view which shows the raising / lowering operation state of the residue processing apparatus of another embodiment. It is a side view which shows the raising / lowering operation state of the residue processing apparatus of another embodiment. 6 is a simplified control block of another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the corn harvester according to the present invention is located at the front of the traveling vehicle body 3 including a pair of left and right front wheels 1 and a pair of left and right rear wheels 2. A harvesting processing device 4 as a crop harvesting unit, a feeder 5 as a conveying device extending in the front-rear direction from the rear of the harvesting processing device 4 to above the traveling vehicle body 3, and a recovery tank as a recovery unit located at the rear of the traveling vehicle body 3 6, and a residue processing device 7 located in the front and rear intermediate portion between the front wheel 1 and the rear wheel 2 below the traveling vehicle body 3.

  Corn as a plant body forms a tuft-like portion containing a large number of seeds (fruits) at the harvesting time with respect to the stems to be planted. Numerous seeds are contained inside the tufted leaves, and the seeds are formed in a form aligned with the outer surface of the rod-shaped core. The corn harvester according to the present invention harvests and collects a tuft having a large number of seeds inside a foliage as a harvesting target.

  That is, in the corn harvesting machine, during the harvesting operation, the traveling vehicle body 3 is driven by driving the front wheels 1, and the harvested object harvested by the harvesting processing device 4 is conveyed toward the collection tank 6 by the feeder 5. It is stored in. Then, the stems left in the field at the time of harvest are shredded by the residue processing device 7.

  The traveling vehicle body 3 is provided with a driving unit 9 in a state where the upper part is covered with a cabin 8 at the front of the vehicle body, and a driving unit 10 is provided at the rear of the driving unit 9 so that a pair of left and right front wheels 1 fixed in a left-right direction is provided. It is configured to be able to travel by being driven by an engine 11 provided in the driving unit 10.

  The traveling transmission system that transmits the power of the engine 11 to the pair of left and right front wheels 1 includes a main transmission 24 composed of a hydrostatic continuously variable transmission (HST), and a sub gear that can be switched between a gear-engaged high and low two-stage. A transmission 25 is provided (see FIG. 8), and the transmission system is configured so that the power of the engine 11 is shifted and then transmitted to the left and right front wheels 1.

  As shown in FIG. 8, the main transmission 24 is moved in the forward direction from the traveling neutral state by swinging the main transmission lever 26 provided in the driving unit 9 forward from the neutral position N in the forward operation range F. The travel speed is increased stepwise, and the main speed change lever 26 is swung backward from the neutral position N in the reverse operation range R, so that the travel speed is increased steplessly in the reverse direction from the travel neutral state. Has been.

  The auxiliary transmission 25 can be switched between a high speed state and a standard state by an auxiliary transmission lever 27 provided in the driving unit 9, and is set to a standard state when performing harvesting work on a farm field. When the field is moved at high speed in the non-working state, the high speed state is set.

  During the harvesting operation, the driver switches the auxiliary transmission lever 27 to the standard state and operates the main transmission lever 26 to change the speed so as to achieve a desired traveling speed. At this time, even if the main speed change lever 26 is operated to the maximum operation position, the speed is limited to a work speed lower than the maximum traveling speed. In addition, when moving on the field at high speed while traveling on the road or in a non-working state, the sub shift lever 27 is switched to the high speed state, and the main shift lever 26 is operated to perform a shift operation so that the desired travel speed is achieved. At this time, if the main speed change lever 26 is operated to the maximum operation position, the speed can be changed to the maximum speed.

  The pair of left and right rear wheels 2 are provided so as to be capable of changing the direction to the left and right by a hydraulically operated steering cylinder (not shown), and are steered with a steering handle 28 as a steering operation tool provided in the driving unit 9. The cylinder C1 is linked through a hydraulic linkage mechanism (not shown), and the steering wheel 28 is rotated so that the pair of left and right rear wheels 2 are steered.

  As shown in FIG. 2, a boarding / alighting deck 12 and a boarding / alighting staircase 13 are provided on the lateral side of the left side entrance of the cabin 8. The getting-on / off stairs 13 can be switched between a use position located on the laterally outer side of the front wheel 1 and a storage position located on the rear side of the front wheel 1 by swinging around the swing axis.

  Auxiliary worker boarding deck 14 is provided on the lateral side of the left side of the vehicle body relative to feeder 5, and auxiliary work such as monitoring the corn carry-out status of feeder 5 by the auxiliary worker boarding on this auxiliary worker boarding deck 14. Can be done. The auxiliary worker boarding deck 14 is arranged such that the front end is located near the rear end of the boarding deck 12.

  As shown in FIGS. 2 and 3, the auxiliary worker boarding deck 14 is located above the fuel tank 15 for storing fuel supplied to the engine 11, and covers the upper side of the fuel tank 15. It has. The prime mover 10 includes an engine 11, an engine cooling radiator 16, an intake case 17, an air cleaner 18 and a pre-cleaner 19 for intake of combustion air.

  As shown in FIGS. 1, 3, and 5, the vehicle body frame F that supports the traveling vehicle body 3 is positioned on both the left and right sides of the traveling vehicle body 3 and is a pair of left and right as main supports extending in the front-rear direction of the traveling vehicle body 3. A plurality of laterally extending along the lateral direction connecting the pair of left and right front and rear facing frame bodies 20 at each of the front and rear frame body 20 and the vehicle body front side portion, the vehicle body rear side portion, and the front and rear intermediate portion side portion. A connecting member 21, and an operating unit frame 23 that supports the operating unit 9 and the cabin 8 surrounding the operating unit 9 from below are provided. The operation part frame 23 is provided in a state of being erected on the upper side from the pair of left and right front and rear frames 20.

  As shown in FIG. 1, the harvesting processing device 4 is supported by a driving unit frame 23 in a vehicle body frame F so as to be swingable around a horizontal axis P <b> 1, and a pair of left and right hydraulically operated types supported by a lower portion of the vehicle body frame F. The lifting / lowering cylinder C2 for the harvesting processing apparatus (hereinafter abbreviated as a harvesting processing cylinder) can be driven up and down.

The residue processing device 7 will be described.
The residue processing device 7 shreds the stems left in the field at the time of harvest, and travels between the front wheel 1 and the rear wheel 2 of the traveling machine body as shown in FIGS. 1 and 3. A cover body 31, which is disposed in the lower part of the vehicle body 3 and supported by the vehicle body frame F via a pair of left and right swing support bodies 30, a rotary chopper 32 provided inside the cover body 31, A grounding roller 33 located at the rear. The cover body 31 functions as a frame body that supports the entire residue processing apparatus 7. The rotary chopper 32 is a hammer knife type shredding device that rotates around a lateral axis and shreds corn stalks left in the field.

  As shown in FIG. 4, the pair of left and right swing support bodies 30 are configured to have a pair of upper and lower swing support arms 30 a and 30 b and are fixed to each of the pair of left and right front-rear frame bodies 20. A pair of left and right brackets 34 are supported so as to be swingable up and down around the horizontal axis P <b> 2, and their extended ends are connected to the cover body 31.

The residue processing device 7 is provided so as to be movable up and down by a lifting cylinder C3 (hereinafter referred to as a residue processing cylinder) for a hydraulically operated residue processing device as an actuator. As shown in FIG. 4, the residue processing cylinder C <b> 3 is attached to the horizontal connecting member 21 </ b> A located in the middle portion of the vehicle body frame F in the vehicle longitudinal direction in a vertical orientation.
When the description is added, the cross-section of the horizontal connecting member 21A is formed in a rectangular tube shape, and is supported over a pair of left and right frame bodies 20 in the front-rear direction. The cylinder body 35 of the residue processing cylinder C3 is fixedly supported on the upper surface of the lateral connecting member 21A at the intermediate position in the vehicle body lateral width direction.

  A guide roller 37 is provided at the upper end of the cylinder rod 36 in the residue processing cylinder C3 so as to be rotatable around a lateral axis. A suspension chain 39 having one end connected to the support portion 38 fixed to the horizontal connecting member 21A and the other end connected to the cover body 31 of the residue disposal device 7 is wound around the guide roller 37. It is stretched in the state.

  Therefore, by operating the residue processing cylinder C3 to extend and contract, the residue processing device 7 suspended and supported by the chain 39 is supported so as to be swingable up and down around the horizontal axis P2. And the residue processing apparatus 7 is comprised so that raising / lowering operation is possible over the descent | fall position where the grounding roller 33 earth | grounded and the rotation chopper 32 approached the ground, and the raising position where the grounding roller 33 and the rotation chopper 32 rose high from the ground. Has been.

  As shown in FIGS. 3 and 5, a countershaft 55 for transmitting the power of the engine 11 to each part is provided in a state extending from one lateral side to the other lateral side of the traveling vehicle body 3. The counter shaft 55 is provided with an input pulley 56 that is integrally rotatable at an intermediate portion, an output pulley 57 and an output sprocket 58 that are integrally rotatable at one end, and a driving force from the engine 11 is applied to the input pulley 56. The inputted driving force is output from the output pulley 57 to the harvesting processing device 4 and output from the output sprocket 58 to the feeder 5.

  The power input to the counter shaft 55 is transmitted from the other end of the counter shaft 55 to the residue processing device 7 via a gear transmission mechanism (not shown) in the transmission case 59. As shown in FIG. 5, the transmission case 59 is supported by the right end portions of the pair of front and rear horizontal connecting members 21 </ b> B and 21 </ b> C, and the output shaft 60 is connected to the vertical swinging shaft core P <b> 2 of the residue processing device 7. It is provided so that it may be located on the same core.

  A belt tension type residual processing clutch 41 is provided as a power interrupting means capable of interrupting power transmission between the output shaft 60 of the transmission case 59 and the drive shaft 40 of the rotary chopper 32. The residue processing clutch 41 is configured to be switchable between a power cut-off state and a power transmission state based on an operation of a manually operated clutch on / off lever 42 as a manual operation tool.

  That is, as shown in FIG. 4, the transmission belt 45 is wound around the drive pulley 43 provided on the output shaft 60 of the transmission case 59 and the driven pulley 44 provided on the drive shaft 40 of the rotary chopper 32. A tension roller 46 is provided to apply tension to the transmission belt 45. The tension roller 46 is pivotally supported at one end side portion of a tension arm 47 that is supported so as to be rotatable about a lateral axis P3 with respect to the cover body 31.

  As shown in FIG. 6, at the other end of the tension arm 47, a tip end lateral portion 49 of an operation linking member 48 in which a round bar is integrally fixed in a T shape in plan view is rotatably supported. . The forward / backward rod portion 50 of the operation linkage member 48 is provided in a state of being inserted through the engaging portion 51 provided on the clutch on / off lever 42. A coil spring 52 acting over the front end locking portion 50 a of the front and rear facing rod portion 50 and the engaging portion 51 of the clutch on / off lever 42 is externally fitted to the front and rear facing rod portion 50.

  The clutch on / off lever 42 is provided so as to be tilted and swingable when the bolt 42a supporting the swinging fulcrum portion is inserted through the insertion hole 42b with flexibility, and is biased against the holding member 53 by the spring 42c. It is provided in the state that was done. In addition, the two holding members 53 are provided so as to be able to hold the positions at the entering position and the cutting position, respectively.

  When the clutch on / off lever 42 is operated to the on position, the tension roller 46 applies tension to the transmission belt 45 by the compression biasing force of the coil spring 52, and the residue processing clutch 41 is switched to the power transmission state. On the other hand, when the clutch engagement / disengagement lever 42 is operated to the disengagement position, the urging force of the coil spring 52 is released, the tension roller 46 becomes free, and the residue processing clutch 41 is switched to the power cut-off state.

  As shown in FIG. 6, an electromagnetically operated hydraulic control valve 61 that supplies and discharges hydraulic oil to and from the residue processing cylinder C3, a control device 62 that controls the operation of the hydraulic control valve 61, and a manual operation. A lift switch 63 (hereinafter simply referred to as a residue lift switch) is provided for a residue processing apparatus as a lift command for manually operating residue processing that commands raising and lowering of the residue processing apparatus 7. ing.

  The residue raising / lowering switch 63 is provided in the main speed change lever 26 and can be operated without releasing the hand from the main speed change lever 26 while the driver is driving the traveling vehicle body 3 while operating the main speed change lever 26. It is configured to be able to.

  That is, as shown in FIG. 7, the residue raising / lowering switch 63 is provided in a state in which a finger can be operated on the grip portion 26 </ b> A of the main transmission lever 26, and is pushed by the finger of the hand operating the main transmission lever 26. It is configured so that it can be operated. The residue raising / lowering switch 63 is configured by a balance swinging type push operation switch which can be neutrally returned.

  In other words, as shown in FIG. 8, the residue raising / lowering switch 63 is provided with a push-operating switch operation body 64 that can swing the balance, and when one end side of the switch operation body 64 is pushed, When the other contact 66 of the switch operation body 64 is turned on and the other end side of the switch operation body 64 is pushed, the other contact 66 is turned on. These contacts 65 and 66 are also configured to return neutrally by a spring 67 so as to be turned off.

  When one contact 65 is turned on, the control device 62 switches the hydraulic control valve 61 to the raised position U. Then, the residue processing cylinder C3 is extended and the residue processing device 7 is raised. When the other contact 66 is turned on, the control device 62 switches the hydraulic control valve 61 to the lowered position D. Then, the residue processing cylinder C3 is shortened and the residue processing device 7 is lowered.

  That is, when the driver operates the residue raising / lowering switch 63 and pushes and operates one end side of the switch operation body 64, the residue processing device 7 rises while the push operation is performed. On the other hand, when the other end side of the switch operating body 64 is pushed, the residue processing device 7 is lowered during the pushing operation. When the pressing operation of the switch operating body 64 is stopped, the raising / lowering operation of the residue processing device 7 is stopped and held at that position.

  The hydraulic oil supply / discharge path 68 from the hydraulic control valve 61 to the residue treatment cylinder C3 is allowed to supply hydraulic oil from the hydraulic control valve 61 to the residue treatment cylinder C3, and the passage of hydraulic oil in the reverse direction is prevented. And a throttle valve 70 provided in a state of bypassing the check valve 69. With this configuration, the ascending operation of the residue processing device 7 is performed quickly, and the descending operation of the residue processing device 7 is performed at a low speed.

  When the residue processing device 7 processes the residue remaining in the field after the corn is harvested, the residue processing device 7 is in a low position (low position for work) where the ground roller 33 contacts or approaches the ground. Position the rotary chopper 32 to rotate. When the residue processing is not performed, the residue processing device 7 is raised to a position far away from the ground (non-working high position), and the rotation operation of the rotary chopper 32 is stopped.

  The support arm 72 that supports the grounding roller 33 is attached to the cover body 31 in a fixed state. The grounding roller 33 is in a grounded position so that the lower end of the rotary chopper 32 is raised by a predetermined amount from the ground. It is set to be.

As shown in FIG. 8, a reverse detection switch 73 that is turned on when the main transmission lever 26 is operated from the neutral position N to the reverse operation range R, and a high-speed detection switch that is turned on when the auxiliary transmission lever 27 is operated at a high speed. 74 is provided.
When at least one of the reverse detection switch 73 and the high speed detection switch 74 is turned on, the control device 62 switches the hydraulic control valve 61 to the raised position, and raises the residue processing device 7 to the non-working high position.

  That is, either when the main transmission lever 26 is operated in the reverse operation range R and the reverse detection switch 73 is turned on, or when the auxiliary transmission lever 27 is operated in a high speed state and the high speed detection switch 74 is turned on. In addition, the residue processing device 7 is forcibly raised to the non-working high position regardless of the command state of the residue raising / lowering switch 63.

  Accordingly, the reverse detection switch 73 and the control device 62 constitute forcibly raising means K1 that raises the residue processing device 7 to the non-working high position when the traveling state of the traveling vehicle body 3 becomes the backward traveling state. Further, the high-speed detection switch 74 and the control device 62 constitute forcibly raising means K2 for raising the residue processing device 7 to the non-working high position when the traveling state of the traveling vehicle body 3 becomes a non-working high-speed state. Is done.

  As shown in FIG. 7, the main transmission lever 26 is used as a raising / lowering command tool for the harvesting device for raising and lowering the harvesting processing device 4 by switching the harvesting processing cylinder C2 separately from the residue raising / lowering switch 63. Is provided with a lifting switch 75 (hereinafter abbreviated as a harvesting lifting switch).

Similar to the residue raising / lowering switch 63, the harvest raising / lowering switch 75 is provided in a state in which a finger can be operated on the grip portion 26A of the main transmission lever 26, and is pushed by the finger of the hand operating the main transmission lever 26. It is configured so that it can be operated. The harvest raising / lowering switch 75 is constituted by a balance swinging type push operation switch that can be returned to neutral, like the residue raising / lowering switch 63, and the specific configuration thereof is the same as the residue raising / lowering switch 63. Therefore, detailed description is omitted.
A pair of left and right harvesting processing cylinders C2 are provided, and each is provided with a hydraulic control valve 76. When a command for raising or lowering is given, the same amount of hydraulic oil is separately supplied to the pair of left and right harvesting processing cylinders C2. The hydraulic control is performed by the pair of hydraulic control valves 76 so that the gas is supplied and discharged.

  In many cases, the residue processing device 7 is operated with the grounding roller 33 in contact with the ground as described above. For example, when the shredded material after chopping the stems is used for feed, etc. In some cases, the grounding roller 33 is lifted off the ground so that the soil is not mixed into the cut material and the rotary chopper 32 does not scrape the soil.

  Therefore, the ground height detection unit 77 as the ground height detection means for detecting the ground height of the residue processing device 7 and the display means for displaying the detected ground height in a state that the driver can recognize. An indicator 78 is provided.

  As shown in FIG. 4, the ground height detection unit 77 is configured using a pull operation type operation wire 79. That is, one end of the inner wire 79a in the pull-type operation wire 79 is connected to the chain connection bracket 80 in the cover body 31 of the residue processing device 7, and one end of the outer wire 79b of the operation wire 79 is connected to the traveling vehicle body 3. It is supported by a fixed fixture 81 on the side. The operation wire 79 extends to the driving unit 9, and the other end of the outer wire 79 b is supported by the stationary receiver 82 on the traveling vehicle body 3 side, and the other end of the inner wire 79 a is extended by a tension spring 83. The other end side is pulled and urged outward.

  A transmission window 84 is formed so as to be visible to the driver corresponding to the passage of the operation wire 79 in the driving unit 9, and a scale 85 is formed in the transmission window 84 along the longitudinal direction of the wire. A display pointer 86 corresponding to the scale 85 is attached to the inner wire 79a.

  The other end of the inner wire 79a is pulled outward by the tension spring 83, but the other end is connected to the cover body 31, so that when the height of the residue processing device 7 is determined, The position is held in that state. Accordingly, when the residual processing cylinder C3 is operated to change the height of the residual processing device 7 to the ground, the slide indicator 78 in which the display pointer 86 moves according to the height of the residual processing device is configured. Seven ground heights can be displayed.

[Another embodiment]
(1) In the above embodiment, the residue raising / lowering switch 63 and the harvesting raising / lowering switch 75 are provided in the main transmission lever 26. However, instead of such a configuration, the following (1-1) to (1- You may comprise like 5).

(1-1) As shown in FIG. 9, the steering handle 28 is provided with a residue raising / lowering switch 63 and a harvesting raising / lowering switch 75.
In this case, the residue raising / lowering switch 63 and the harvesting raising / lowering switch 75 are not limited to be arranged side by side, and they may be arranged to be separated from each other on the left and right sides. Further, the switch is not limited to a push operation type switch, but may be a swing lever type switch.
(1-2) A configuration in which a residue raising / lowering switch 63 is provided in the main transmission lever 26 and a harvesting raising / lowering switch 75 is provided in the steering handle 28.
(1-3) A configuration in which the residue raising / lowering switch 63 is provided in the steering handle 28 and the harvesting raising / lowering switch 75 is provided in the main transmission lever 26.
(1-4) A configuration in which the residue raising / lowering switch 63 is provided in the main transmission lever 26 and the harvesting raising / lowering switch 75 is provided in, for example, the operation panel of the driving unit 9 other than the main transmission lever 26 and the steering handle 28.
(1-5) A configuration in which the residue raising / lowering switch 63 is provided in the steering handle 28, and the harvest raising / lowering switch 75 is provided in, for example, the operation panel of the driving unit 9 other than the main transmission lever 26 and the steering handle 28.
(1-6) A configuration including a swing operation type operation lever instead of the steering handle 28 as a steering operation tool.

(2) In the above-described embodiment, the residue raising / lowering switch 63 is configured by a balance swinging push operation switch that can be neutrally returned. However, instead of such a configuration, an operation for instructing ascent is performed. A switch and an operation switch for commanding lowering may be provided separately. Further, instead of the switch in the push operation type, a swing operation type switch may be used.

(3) In the above-described embodiment, in the residue processing device 7, the grounding roller 33 is provided in a fixed position with respect to the cover body 31, and the lower end portion of the rotating chopper 32 is more than the ground with the grounding roller 33 grounded. Although what is set so that it may become a position which raises only predetermined amount was shown, it may replace with such a structure and may be comprised as follows.

  As shown in FIG. 10, a support arm 87 that rotatably supports the ground roller 33 is pivotally supported around the horizontal axis P <b> 4 with respect to the cover body 31, and the cover body of the support arm 87. The swing angle with respect to 31 can be changed by a height adjustment lever 88 provided in the operation unit 9.

  In other words, an intermediate portion of the L-shaped relay link 90 in a side view is supported by a bracket 89 fixed to the cover body 31 so as to be swingable around the horizontal axis P5. One end of the relay link 90 and the swinging end of the support arm 87 are interlocked and connected by a rod 91, and the other end of the relay link 90 and the height adjustment lever 88 are connected via a pull-type operation wire 92. It is linked and linked. A compression spring 95 is provided between the outer wire receiver 94 on the cover body 31 side and the other end of the relay link 90.

When the residue processing device 7 is lowered and the grounding roller 33 is grounded, the relay link 90 swings so as to pull the operation wire 92 through the rod 91. Further, the height adjusting lever 88 is configured to be locked to the locking portion 93 so as to be held at a predetermined position with respect to the pulling operation by the operation wire 92.
A plurality of locking portions 93 are formed in accordance with the height to the ground, and the residue processing device 7 is lowered while the height adjusting lever 88 is locked to any of the locking portions 93, and the grounding roller 33 is grounded. Then, the height of the rotating chopper 32 is adjusted to a height corresponding to the locking portion 93.

  The operation wire 92 is not a push-pull wire but a pulling operation type wire, and when the height adjusting lever 88 is moved up the residue processing device 7, the operation wire 92 becomes loose. At this time, the support arm 87 swings downward, and the ground roller 33 relatively moves downward. In this state, the height adjustment lever 88 can be operated to change to an arbitrary adjustment position.

  As described above, after the residue processing device 7 is lifted and adjusted for position, when the residue processing device 7 is lowered, the grounding roller 92 contacts the ground and relatively rises due to the ground pressure. When the height adjustment lever 88 is raised to the adjustment position set, the further relative rise stops, so that the residue processing device 7 is held in a state where the grounding roller 33 is grounded at that position. It will be.

(4) In the above embodiment, the residue disposal clutch 41 is configured to be switchable between the power cutoff state and the power transmission state based on the operation of the manually operated clutch on / off lever 42. Instead of such a configuration, or in addition to such a configuration, the following configuration may be employed.

  As shown in FIG. 11, the vertically extending rod portion 98 of the operation linkage member 97 pivotally connected to the other end side of the support arm 96 that supports the tension roller 46 is provided in a state of being inserted through the fixed receiving portion 99 on the vehicle body side. The coil springs 100 and 101 are externally mounted on both the upper and lower sides of the fixed receiving portion 99 in the vertically extending rod portion 98.

  In this configuration, when the residue processing cylinder C3 is operated and the residue processing device 7 is lowered to the working low position, the support arm 96 is also lowered accordingly. The outer upper coil spring 100 is compressed between the fixed receiving portion 99 and the upper end receiving portion 98a of the vertically extending rod portion 98, and the support arm 96 is relatively moved so that the tension roller 46 presses the transmission belt 45. The residue processing clutch 41 is switched to the power transmission state (see FIG. 11).

  When the residue processing device 7 is raised to the non-working high position, the support arm 96 is also raised accordingly. At that time, the coil springs 100 and 101 on both the upper and lower sides covered by the vertical rod portion 98 are balanced. Thus, the support arm 96 is relatively swung so that the tension roller 46 releases the pressing action of the transmission belt 45, and the residue processing clutch 41 is switched to the power cut-off state (see FIG. 12). .

  In short, the residue processing clutch 41 is switched to the power shut-off state when the residue processing device 7 is raised to the non-working high position, and is switched to the power transmission state when the residue processing device 7 is lowered to the working low position. In addition, the supply of power to the residue processing device 7 is intermittently interlocked with the raising / lowering operation of the residue processing device 7.

(5) In the above-described embodiment, the ground height detection unit 77 as the ground height detection unit is configured using the pull operation type operation wire 79, but as the ground height detection unit, Although not shown in the figure, for example, a grounding type height detection sensor that detects the height of the residue processing device with respect to the ground by detecting the angle of the swinging arm that swings and displaces while following the ground. Then, a non-contact type height detection sensor or the like that detects the height of the residue processing device with respect to the ground may be used.

  Further, as a display means for displaying the ground height, in place of the slide type indicator 78, various forms such as a digital display type height indicator and a bar graph type height indicator (not shown) are used. Can be implemented.

(6) In the above embodiment, the residue processing device 7 is provided at the front and rear intermediate portion between the front wheel 1 and the rear wheel 2 below the traveling vehicle body 3. A configuration may be provided in the lower part on the front side of the traveling vehicle body 3 or a configuration provided in the lower part on the rear side of the traveling vehicle body 3.

(7) In the above embodiment, the check valve 69 and the throttle valve 70 are provided in parallel in the hydraulic oil supply / discharge path 68 from the hydraulic control valve 61 to the residue processing cylinder C3. The following configuration may be used.

  As shown in FIG. 13, a pilot-operated check valve 102 may be provided in the hydraulic oil supply / discharge path 68 from the hydraulic control valve 61 to the residue processing cylinder C3. However, in this configuration, it is preferable to operate the hydraulic control valve 61 by intermittent driving in a pulsed manner so that the residue processing device 7 does not suddenly descend during the lowering operation.

(8) In the above embodiment, when the traveling state of the traveling vehicle body 3 becomes the backward traveling state, the forcibly raising means K1 that raises the residue processing device 7 to the non-working high position and the traveling state of the traveling vehicle body 3 are non-working. Forcibly raising means K2 for raising the residue processing device 7 to the non-working high position when it is in a high-speed state is provided, but only one of these forced raising means K1, K2 is provided. It is good also as a structure provided with neither of these forced raising means K1 and K2.

  The present invention can be applied to a corn harvester equipped with a residue processing apparatus.

DESCRIPTION OF SYMBOLS 3 Traveling vehicle body 4 Harvesting device 7 Residue processing device 26 Shifting operation tool 28 Steering operation tool 41 Power intermittent means 42 Manual operating tool 63 Lifting command tool for residue processing 75 Lifting command tool for harvesting device 77 Detection of ground height Means 78 Display means C3 Actuator K1, K2 Forced ascent means

Claims (14)

  Residue processing device provided on the traveling vehicle body so as to be movable up and down, an actuator capable of driving up and down the residue processing device, a lifting command tool for residue processing for commanding a lifting operation of the actuator, and traveling of the traveling vehicle body A corn harvesting machine provided with a speed change operation tool for instructing a speed, and provided with the elevating command tool for the residue processing.   Residue processing device provided on the traveling vehicle body so as to be movable up and down, an actuator that can drive the residue processing device up and down, a lift command device for residue processing that commands a lifting operation of the actuator, and a direction of the traveling vehicle body A corn harvesting machine provided with a steering operation tool for performing a change operation, and the lifting operation tool for the residue processing provided in the steering operation tool.   The corn harvester according to claim 1 or 2, wherein the raising / lowering commanding tool for residue processing is configured by a push-operated switch.   The corn harvesting machine according to claim 3, wherein the raising / lowering commanding tool for the residue processing is constituted by a balance swinging push operation switch which can be neutrally returned.   The harvesting device is provided on the traveling vehicle body so as to be driven up and down freely, and the lifting operation tool for the harvesting device that commands the lifting operation of the harvesting device is provided in the shift operation tool. The corn harvester according to item 1.   The harvesting device is provided on the traveling vehicle body so as to be driven up and down freely, and the raising and lowering command tool for commanding the raising and lowering operation of the harvesting device is provided in the steering operation tool. The corn harvester according to claim 1.   The corn harvester according to claim 5 or 6, wherein the raising / lowering command tool for the harvesting device is constituted by a push-operated switch.   The corn harvester according to claim 7, wherein the raising / lowering commanding tool for the harvesting device is constituted by a balance swinging type push operation switch which can be neutrally returned.   When the traveling state of the traveling vehicle body changes to the reverse traveling state, forcibly raising means for raising the residue processing device to a non-working high position regardless of the command state of the raising / lowering command tool for residue processing is provided. The corn harvester according to any one of claims 1 to 8.   When the traveling state of the traveling vehicle body becomes a non-working high-speed state, forced raising means for raising the residue processing device to a non-working high position regardless of the command state of the raising / lowering commanding tool for residue processing The corn harvester according to claim 1, which is provided.   11. The ground height detecting means for detecting the ground height of the residue processing device and a display means for displaying a detection result of the ground height detecting means are provided. The corn harvester described.   The corn harvester according to any one of claims 1 to 11, further comprising power interrupting means capable of intermittently supplying power to the residue treatment apparatus.   The corn harvester according to claim 12, wherein the power interrupting means is configured to be switchable between a power cut-off state and a power transmission state based on an operation of a manual operation tool.   The power interrupting means switches to the power shut-off state when the residue processing device is raised to the non-working high position, and switches to the power transmission state when the residue processing device is lowered to the work low position. The corn harvesting machine according to claim 12 or 13, wherein the supply of power to the residue processing device is intermittently interlocked with a lifting operation of the residue processing device.

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