JP2003199419A - Travel operation apparatus of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that both right and left travel devices naturally travel or do not stop, even when right and left side clutches in a travel mission case are disengaged to stop both the right and left travel devices. <P>SOLUTION: A raking pedal 7 for engaging or disengaging only the right and left side clutches disposed in the travel mission case for rotating and driving both the right and left travel devices, thereby permitting or stopping the travel of the travel devices, is disposed. A lock means 8 for locking the travel devices so that the right and left side clutches are disengaged by the operation of the raking pedal 7 to stop the travel of each travel device is disposed. The lock means 8 is formed to directly operate the direction-switching relief valve 26a of a travel direction-switching lever 26 via a raking cable 36. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a left and right side clutch in a traveling mission case for rotationally driving a traveling device, and only this side clutch is "ON" or "OFF".
Providing a scraping petal for running or stopping travel by operating, the left and right side clutches are disengaged by the depression operation of this scraping petal, and the travel of each traveling device is stopped.
This is a technology in which locking means is provided to lock the vehicle so that it will not run, and it can be used as a traveling operation device for a combine.

[0002]

2. Description of the Related Art When harvesting napped culms by combine harvesters, traveling devices provided on the left and right sides of the underside of the traveling chassis are driven by the rotation of a transmission mechanism in a traveling mission case provided at the front of the traveling chassis. It is driven to rotate, the combine travels, the standing grain culm is mowed by the reaper provided on the front side of the traveling chassis, transferred to the upper rear part by this reaper, supplied to the thresher, and taken over. Threshing is carried out while sandwiching and transferring the inside of the threshing machine, and the threshed grain is supplied to the grain storage tank provided on the side of the threshing machine and temporarily stored.

When the driver pushes the scraping petal while running the mowing and harvesting work, the left and right side clutches of the transmission mechanism inside the traveling mission case are disengaged in conjunction with this operation. It is operated, rotation drive of the traveling device on both the left and right sides of the combine is stopped, the traveling of this combine is stopped, the cutting work of the grain culm is temporarily stopped, but the operation of the reaper and the thresher is continued, The grain culms being sandwiched and transferred to the reaper are transferred to the upper rear part by the reaper, supplied to the thresher, and threshed by the thresher. Further, when the combine is stopped for a long time on the field, on the road, etc., when the driver steps on the drive brake petal, the brake load is applied to the brake device in synchronism with this operation, and the stop state is stopped. The drive brake is applied to the combine.

[0004]

When the combine is stopped while the combine is being mowed, the left and right side clutches of the transmission mechanism in the traveling mission case are disengaged when the scraping petal is stepped on. When it is activated, the combine is in a stopped state, but when the claws of the left and right side clutches are in a meshed state, if the delay of releasing the claws is delayed, it may not be completely stopped, or
Alternatively, if the left / right clutch is operated in the disengaged state in a field on a sloping land, the left / right side clutch is temporarily disengaged, but it may run naturally, which is dangerous. , Is intended to solve these problems.

[0005]

To this end, according to the invention described in claim 1, the present invention rotatably drives the traveling device 3 on the lower left and right sides of the traveling chassis 2. The traveling mission case 4, the left and right side clutches 6a and 6b installed in the traveling mission case 4, and the left and right side clutches 6a and 6b are turned on and off. Then, in the combine provided with the scraping petal 7 for running or stopping the running, the left and right side clutches 6a, 6a,
6b is cut and operated, the traveling of each traveling device 3 is stopped, and locking means 8 for locking is provided so as not to travel, and the operation of the reaper 10 and the thresher 9 is provided so as to continue. It is a traveling operation device for a combine harvester.

[0006] When harvesting napped culms with a combine, the traveling devices 3 provided on the left and right sides below the traveling chassis 2 rotate the transmission mechanism in the traveling mission case 4 provided at the front of the traveling chassis 2. Is driven to rotate, the combine travels, and the napped culms are mowed by the reaper 10 provided on the front side of the traveling chassis 2, transferred to the upper rear part by the reaper 10, and supplied to the thresher 9. It is taken over and this thresher 9
The thresher that has been threshed while being pinched and transferred inside the threshing machine 9
It is supplied to the grain storage tank provided on the lateral side of and is temporarily stored.

During the running of this cutting operation, the scraping petal 7
When the driver depresses, the left and right side clutches 6a and 6b in the transmission mechanism installed in the traveling mission case 4 are disengaged in conjunction with this operation, and the traveling devices 3 on both the left and right sides of the combine are operated. Is stopped, the traveling of this combine is stopped, and at the same time, the locking means 8 is operated so that the traveling devices 3 do not travel, and the state is locked.

The rotary drive of each of the traveling devices 3 is stopped, the traveling is stopped, and the cutting work of the grain culms is temporarily stopped, but the operation of the reaper 10 and the thresher 9 is continued, and the reaper 10 is cut. The grain culm that is being sandwiched and transferred is transferred to the upper rear part by the reaper 10, supplied to the thresher 9, and threshed by the thresher 9. In addition, when the combine brake is stopped for a long time on the field, on the road, etc., when the driver steps on the drive brake petal, the brake load is applied to the brake device in conjunction with this operation, and the combine is stopped. The drive brake is applied.

According to the second aspect of the present invention, the locking means 8 directly actuates the direction switching relief valve 26a which is operated by the operation of the traveling direction switching lever 26 from the scraping petal 7 through the scraping cable 36. The traveling operation device for a combine according to claim 1, wherein the traveling operation device is provided.

When the driver pushes the scraping petal 7 during the cutting operation for cutting the napped culms, the left and right sides of the transmission mechanism installed in the traveling mission case 4 are linked with this operation. The side clutches 6a and 6b are disengaged to stop the rotational drive of the traveling devices 3 on both the left and right sides of the combine, the traveling of the combine is stopped, and a lock provided to prevent the traveling devices 3 from traveling. Means 8. This locking means 8 is a scraping petal 7.
And the direction switching relief valve 26a operated by the traveling direction switching lever 26 for switching the traveling direction of the combine,
By connecting with the take-in cable 36, the stepping operation of the take-up petal 7 directly pushes down the direction changeover relief valve 26a of the traveling direction change-over lever 26 via the take-in cable 36, and is interlocked with this operation. Then, the pressure of the direction switching relief valve 26a rises, and the left and right side clutches 6a and 6b are "disengaged", and the left and right side clutch plates of the left and right side clutches 6a and 6b are braked. The traveling devices 3 are completely stopped.

[0011]

According to the first aspect of the present invention, the traveling devices 3 on the lower side of the traveling chassis 2 and on the left and right sides are provided with the scraping petals 7.
While the traveling is stopped by the stepping operation, the locking device 8 is provided to lock the traveling devices 3 so that the traveling devices 3 do not travel, so that the traveling devices 3 can be prevented from traveling naturally even on a sloping ground. For this reason, for example, work such as repair and inspection can be safely performed.

According to the second aspect of the present invention, the lock means 8 includes the scraping petal 7 and the direction switching relief valve 26a which is operated by the operation of the traveling direction switching lever 26 for switching the traveling direction of the combine. The connecting cable 36 is used to connect the traveling direction switching lever 26 with the direction switching relief valve 26.
Since a is directly pushed down to be operated, the stop can be reliably performed with a simple configuration. Further, it can be constructed at low cost.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. A traveling device 3 is provided on both left and right sides below the traveling chassis 2 of the combine 1, and a traveling mission case 4 is provided at a front portion of the traveling chassis 2, and a transmission mechanism 5 inside the traveling mission case 4 is provided. Is provided with left and right side clutches 6a and 6b. A scraping petal 7 for turning on / off only the left / right side clutches 6a, 6b is provided on the traveling chassis 2, and the scraping petal 7 is also provided.
By depressing, the left and right side clutches 6a and 6b are disengaged, the traveling of each traveling device 3 is stopped, and locking means 8 for locking the traveling device 3 is provided to prevent further traveling. These traveling device 3 and traveling mission case 4
The drawing petal 7, the locking means 8 and the like will be mainly illustrated and described.

Below the traveling chassis 2 of the combine 1, as shown in FIG. 9, the traveling devices 3 are arranged on both the left and right sides on which a pair of left and right traveling crawlers 3a traveling on the soil surface are stretched.
A thresher 9 is placed on the upper side of the traveling chassis 2. The mowing machine 10 on the front side of the traveling chassis 2 cuts the napped culms, which are transferred to the upper rear part by the reaping machine 10 and fed to the feed chain 11a of the threshing machine 9 and the holding rod 1.
1b is taken over and threshed while being pinched and transferred. The grains that have been threshed and have been sorted are temporarily stored in a grain storage tank 12 arranged on the right lateral side of the threshing machine 9.

On the front side of the traveling chassis 2, as shown in FIG. 9, a narrow guide 13 for separating the napped culm from the front end position.
a, a succulent body 13b, and a raising device 1 for raising a napped culm
4a, a scraping device 15a of the scraping and scraping transfer device 15 for scraping the raised crops, a cutting blade device 14b for cutting the scraped crops, and a sandwiched transfer of the scraped crops. And the root / head transfer device 16 of the grain stalk scraping transfer device 15 which is delivered to the feed chain 11a of the thresher 9 and the holding rod 11b.
A reaper 10 composed of a, 16b, etc. is provided. The reaper 10 is configured to move up and down with respect to the soil surface by a telescopic cylinder 17 driven by hydraulic pressure.

A horizontal support pipe rod 18b is provided at the upper end of the support rod 18a inclined from the lower front portion to the upper rear portion of the reaper 10, and the support pipe rod 18b is provided on the upper surface of the traveling chassis 2. The reaper 10 is rotatably supported by a support device 18c, and the reaper 10 is vertically rotated by the operation of the telescopic cylinder 17 about the support pipe rod 18b.

In the grain culm transfer path formed by the grain culm scraping transfer device 15 of the reaper 10, the grain culm to be cut and transferred is brought into contact with the grain culm to be supplied to the thresher 9. This is a configuration provided with a grain culm sensor 10a for detecting the presence or absence of The operation room frame 19a is provided on the upper side of the step 2a provided on the upper side of the traveling chassis 2 on the front side of the threshing machine 9 and the sub-step 2b provided on the front side of the step 2a.
9 is provided with an operating chamber 19b formed therein, and in the operating chamber 19b, as shown in FIG. 9, the operating device 20 is formed in a substantially L-shape in plan view for performing operations such as starting and stopping the combine 1 and adjusting each part. An operator's seat 21 on which an operator who carries out these operations is mounted, a driving brake petal 22, a scraping petal 7 and the like are provided. Below the operator's seat 21, the upper surface of the traveling chassis 2 is provided with an engine. 23 is placed, and the grain storage tank 12 is arranged in the rear part. The traveling device 3, the reaper 10, the thresher 9, the engine 23 and the like form a machine body 1a of the combine 1.

As shown in FIG. 4, the operating device 20 has a substantially L-shaped configuration in an operating chamber 19b formed by an operating chamber frame 19a, and is arranged in front of the cockpit 21 and on the left lateral side. is there. Description will be made by displaying typical various levers, various adjustment dials, various switches and the like provided on the surface portion of the operation device 20. A hydraulic continuously variable transmission 24, which will be described later, operates to change the traveling speed of the combine 1 forward or backward, a main gear shift lever 25a, a traveling direction switching lever 26 for switching the traveling direction of the combine 1, a sub gear shift lever 25.
b, throttle lever 25c, cutting lever 25d, etc., vehicle speed adjustment dial 27a, cutting height adjustment dial 2
7b, handle depth adjusting dial 27c, etc., direction switch 28a, vehicle speed switch 28b, front and rear switch 28c,
And the left and right switches 28d and the like.

On the left side of the front portion of the sub-step 2b provided at the front portion of the step 2a, inside the operation chamber 19b formed by the operation chamber frame 19a, as shown in FIGS. On the left side, when the combine 1 is stopped, a brake load is applied to a brake device 29 provided on one lateral side of the traveling mission case 4 and the inside of the traveling mission case 4 is accommodated via the brake device 29. Step on the drive brake petal 22 that applies a vehicle drive brake to the brake drive shaft 30b via the brake shaft 30a, or release the vehicle drive brake, or rotate with the rotation shaft 22a to release the vehicle drive brake pedal 22. This is a configuration in which it is freely supported. The operation of the drive vehicle brake petal 22 is performed by operating the left and right side clutches 6a, 6 in the traveling mission case 4.
b is a configuration that does not "turn on" or "off".

On the right side of the front part of the sub-step 2b, in the operation chamber 19b, as shown in FIGS.
It is provided rotatably so as to step on or release the pedal, and by operating the scraping petal 7, the traveling mission case 4
The left and right side clutches 6a and 6b slidably supported on the side clutch shaft 6c of the transmission mechanism 5 installed inside are operated to be turned on and off, and a plurality of sheets are provided in association with this operation. The left and right clutch plates 6d and 6e are actuated to apply a brake, and the left and right traveling axles 31a and 31b provided at the final end of the traveling mission case 4 are rotated or stopped, and the left and right traveling axles 31a and 31b are rotated. Each drive sprocket 31c, each rear sprocket 31d, and each traveling crawler 3a of the traveling device 3 on both the left and right sides, which are hung on the respective right and left driving axles 31a and 31b, are rotated or stopped to rotate, so that they are combined. Reference numeral 1 is a configuration for traveling or stopping traveling. Even when the traveling is stopped, the thresher 9 and the reaper 10 are continuously operated.
The grain culm that is being clamped to the grain culm scraping transfer device 0 of 0 is clamped and transported by the grain culm scraping transfer device 15, is supplied to the threshing machine 9, and is threshed.

When the traveling device 3 is traveled or stopped, the operation of the scraping petal 7 provided on the right side of the front part of the sub-step 2b is performed to move the left side of the travel mission case 4 to the left.
The right side clutches 6a and 6b are operated "on" and "off", and when the traveling device 3 is stopped and the vehicle braking is applied, the vehicle driving petal 22 provided on the left side of the front part of the sub-step 2b is used. When a brake load is applied to the brake device 29 of the combine 1 by the operation of, the vehicle drive brake is applied to the brake drive shaft 30b in the traveling mission case 4 via the brake device 29, and the braking force is interlocked with this. Then, when the vehicle driving brake is applied to the traveling device 3, the traveling operation or the traveling stop operation of the traveling device 3 and the operation of applying the vehicle braking are performed by the scraping petal 7.
And the vehicle drive brake petal 22 are performed separately, the operation load of both is lightened and the operation is easy. Further, even if the driving brake petal 22 is operated on a sloping ground, the left and right side clutches 6a, 6b do not become "disengaged". Therefore, the combine 1 prevents natural traveling due to the slope of the sloping ground. It is a composition.

While the napped culm is being cut, the left and right side clutches 6a and 6b pivotally supported on the side clutch shaft 6c in the traveling mission case 4 are disengaged by stepping on the scraping petal 7. The traveling devices 3 provided on the left and right sides below the traveling chassis 2 of the combine 1 are configured to stop traveling, but the left and right side clutches 6a and 6b are disengaged to prevent traveling during this stop. at the same time,
The direction switching relief valve 26a, which is operated by the operation of the traveling direction switching lever 26, is directly pushed down to increase the pressure and lock the locking means 8 as shown in FIG.

By depressing the scraping petal 7, the traveling devices 3 on both the left and right sides are stopped, and the locking means 8 is provided to lock the traveling devices 3 so that the traveling devices 3 do not travel during the stop. Even if each traveling device 3 is stopped on a slope, it can be prevented from traveling naturally due to the lock effect, and therefore, for example, repair and inspection work can be safely performed during the stop. .

As shown in FIG. 1, the locking means 8 has a structure in which the sweeping petal 7 is rotatably supported on the sweeping petal shaft 7a, and is attached to the lower end of the sweeping petal 7. Board 7
This is a configuration in which b is fixedly provided. Below the traveling direction switching lever 26, there is provided a direction switching relief valve 26a which is operated by operating the traveling direction switching lever 26, and
An operating tool 2 for operating the directional switching relief valve 26a.
6b is provided, and the support rod 26b is provided below the operation tool 26b.
c is provided, and below the support rod 26c,
Each switch 26, 26d is provided. A supporting rod 26c for operating and operating a direction switching relief valve 26a which is operated via the supporting rod 26c by operating the traveling direction switching lever 26;
Between the mounting plate 7b of the scraping petal 7 and the scraping cable 3
2 is provided and connected. This scraping cable 3
The swept petal 7 side of 2 is supported by the front support plate 32a provided in the sub-step 2b, and the directional switching relief valve 26 is provided.
The a side has a configuration in which it is supported by a rear support plate 32b provided on the direction switching relief valve 26a.

The direction switching relief valve 26a is actuated via the operation tool 26b by the left / right switching operation of the traveling direction switching lever 26, and in conjunction with this operation, the combine 1 travels in the left or right direction. The configuration is such that the turning control is performed. During the mowing work of the napped culms, by stepping on the scraping petal 7, the left and right side clutches 6 in the transmission mechanism 5 of the traveling mission case 4 are interlocked with this operation.
a and 6b are operated in the cut state, the rotational drive of the traveling devices 3 on the left and right sides of the combine 1 is stopped, the traveling of the combine 1 is stopped, and the traveling devices 3 are locked so as not to travel. The lock means 8. By operating the scraping petal 7 and the traveling direction switching lever 26 for switching the traveling direction of the combine 1, the direction switching relief valve 26a is operated via the support rod 26c. This support rod 26c
By providing a swaging cable 32 between and, the interlocking with the stepping operation of the sweeping petal 7,
The direction switching relief valve 26a is actuated directly to the depressed state, and in conjunction with this operation, the direction switching relief valve 26a is operated.
The pressure of a increases and the left and right side clutches 6a, 6b
When the vehicle is stopped by turning off, the left and right clutch plates 6d and 6e are pushed and the brake is applied, so that the traveling devices 3 are completely stopped. The left and right side clutch 6 is operated by stepping on the scraping petal 7.
Although a and 6b are disengaged and stopped, when the left and right side clutches 6a and 6b are in a meshed state, it is not possible to completely stop when the left and right side clutches 6a and 6b are disengaged. If 6a, 6b is turned off, it may not stop, so push down the direction switching relief valve 26a,
The pressure is increased and the left and right side clutches 6a and 6b are disengaged and the brake is applied at the same time.

Each of the traveling devices 3 is provided with a locking means 8 for locking the traveling petal 7 so that the traveling petal 7 is stopped by the stepping-in operation of the sweeping petal 7 and is prevented from traveling further. The locking means 8 is provided with the sweeping petal 7 and the combine 1. By operating the traveling direction switching lever 26 for switching the traveling direction of the, the direction switching relief valve 26a is operated via the support rod 26c. By connecting to the support rod 26c with the take-in cable 32, the direction switching relief valve 26a of the traveling direction switching lever 26 is directly pushed down so that it can be operated. . Further, it can be constructed at low cost.
Further, even if the vehicle is stopped on a sloping ground, it can be stopped reliably.

As shown in FIGS. 6 to 8, the traveling mission case 4 is provided with a brake device 29 on one side and a detour case 5a having a transmission mechanism 5b on the other side. In addition to being provided, a hydraulic continuously variable transmission 24 is provided on the upper portion. The transmission mechanism 5 in the traveling mission case 4 for traveling mounted on the front end of the traveling chassis 2.
A vehicle speed sensor 4a of a potentiometer type for detecting the traveling vehicle speed based on the output thereof is provided in the transmission path.

Between the brake lever 29a of the brake device 29 provided on the lateral side of the traveling mission case 4 and the petal lever 22b of the drive vehicle brake petal 22 rotatably provided on the front left side of the sub-step 2b. 2, the brake cable 22 as shown in FIGS. 2, 3, 6, and 8.
This is a configuration in which c is provided and connected. When applying the brake for vehicle driving, the pedal brake lever 22b, the cable 22c for brake,
And the brake device 29 via the brake lever 29a.
A brake load is applied to the brake transmission shaft 30a in the traveling mission case 4, and the vehicle drive brake is applied to the brake drive shaft 30b. Further, the vehicle drive brake is released by releasing the depression.

As shown in FIGS. 1 to 4, the take-in petal 7 is provided with the left and right side clutches 6 in the traveling mission case 4.
This is a configuration in which the scraping petal 7 is stepped on or off to turn on / off the a and 6b, or rotatably supported by a scraping petal shaft 7a to release the stepping. The ON-OFF switch type switch 33 provided in the front part of the scraping petal 7 is turned on when the scraping petal 7 is stepped on or released.
It is a configuration of N-OFF. This ON-OFF is input to the control device 20a installed in the operating device 20, and based on this input, the control device 20a transmits the left / right signal in the traveling mission case 4 via the hydraulic continuously variable transmission 24.
The right side clutches 6a and 6b are operated to be turned on / off and the combine 1 is controlled to run or stop running.

The mounting plate 7b of the scraping petal 7 is shown in FIG.
As shown in FIG. 3, one end of the take-in cable 36 is attached to the left and right support shafts 34a of the traveling mission case 4,
The left and right shifters 34c and 34d are fixedly provided on the 34b, and the left and right levers 35a and 35b are provided outside the traveling mission case 4 at one end of the left and right support shafts 34a and 34b. Is fixedly provided. The left / right shifters 34c, 34d are inserted into the sliding grooves of the left / right side clutches 6a, 6b.

The inner 36a at the other end of the take-in cable 36 is attached to the left lever 35a, and the outer 36
b is the structure attached to the right lever 35b. The inner 36a and the outer 36b of the sweeping cable 36, the left / right levers 35a and 35b, and the left / right shifters 34c and 3 are operated by operating the sweeping petal 7 or releasing the depression.
4d, the left and right side clutches 6a and 6b in the traveling mission case 4 are operated to be turned on / off. If troubles occur in the hydraulic continuously variable transmission 24, the switch 33, and the like, and these troubles prevent the left and right side clutches 6a and 6b from being operated "on" and "off," By operating the petal 7, the left and right side clutches 6a and 6b are turned on and off via the take-in cable 36 provided on the take-in petal 7. It is a configuration that can prevent the harvesting work from being interrupted on the way.

When the scraping petal 7 is stepped on, the left and right side clutches 6a and 6b in the traveling mission case 4 are disengaged and the left and right clutch plates 6d, 6d, through the scraping cable 36 and the like. 6e is pushed and the brake is loaded. Conventionally, if the operation is performed on a sloping ground or the left and right side clutches 6a and 6b are loaded, even if the scraping petal 7 is stepped on, delay in the disengagement operation of the left and right side clutches 6a and 6b, Although the traveling devices 3 did not sometimes stop, the left and right side clutches 6a and 6b are connected to each other by connecting the left and right side clutches 6a and 6b with the rubbing petal 7 with the rubbing cable 36.
The brake is applied together with the cut state.

As a result, even if the left and right side clutches 6a and 6b are operated to disengage on a sloping ground, the traveling devices 3 do not completely stop, and the vehicle naturally travels or the left and right side clutches 6a and 6b. When a load is applied to the vehicle, the cutting operation may be delayed or the traveling devices 3 may not stop. However, the scraping cable 36 is provided, and the scraping petal 7 and the left and right are provided by the scraping cable 36. By connecting the side clutches 6a and 6b, the left and right side clutches 6a and 6b are connected.
It was possible to solve the above-mentioned problems by applying the brake together with the turning-off operation.

The operation of the threshing machine 9 and the reaper 10 is continued even when the scraping petal 7 is stepped on and the traveling of the combine 1 is controlled to a stopped state. When stopping the threshing machine 9 and the reaper 10, the cutting lever 25d is operated to the stop side.

Main shift lever 25a of the operating device 20
2 and 3, a receiving plate 38a provided below the main transmission lever 25a is rotatably supported by a rotating pin 38b on a mounting plate 37a fixedly attached to the operation frame 37. It is a composition. The rear side of the receiving plate 38a and the hydraulic continuously variable transmission 2
The trunnion shaft 24a of No. 4 has a connection configuration in which an adjustable connection lot 39a is provided.

Between the petal lever 22b of the drive vehicle brake petal 22 and the link 40a on one side of the rotatably provided rotator 40, the adjustable connecting lot 3 can be provided.
9b is provided and connected. Further, the front pin 40c on the front side of the link 40b on the other side of the rotating tool 40 and the receiving plate 38
A connecting lot 39c that can be adjusted is provided and connected between the support pin 38c provided on a and the support pin 38c. Further, the rear pin 40 on the rear side of the link 40b on the other side of the rotating tool 40
d and the support pin 38c provided on the receiving plate 38a,
This is a configuration in which an adjustable connection lot 39d is provided and connected.

When the drive brake petal 22 is stepped on while the main shift lever 25a is operated to the forward side, the petal lever 22b and the connected lot 39b are rotated about the rotation shaft 22a. Pulled, turning tool 4
The link 0a of 0 is rotated counterclockwise, and the connected lot 39c acts in the pulled-down state, so that the main shift lever 25
a is a configuration that returns to the neutral position. Also, the main transmission lever 25
When the vehicle brake petal 22 is stepped on while a is being operated to the reverse side, the coupled lot 39d acts in a raised state and the main transmission lever 25a returns to the neutral position.

A brake drive shaft 30b, to which a brake load is applied via a brake shaft 30a of a brake device 29 provided on the traveling mission case 4, has left and right side clutches 6a and 6b as shown in FIG. It is provided on the upper side of the supporting side clutch shaft 6c and on the lower side of the change shaft 41b that supports the change gear 41a. The brake device 29 is downsized, and the vehicle drive brake can be applied regardless of the auxiliary shift position.

The switch 33 is turned on or off by the stepping-on or stepping-off operation of the scraping petal 7, and this ON-OFF control is input to the control device 20a. Based on this input, the control device is controlled. 20a
The left and right side clutches 6a and 6b of the transmission mechanism 5 in the traveling mission case 4 are controlled to be "on" and "off", and each traveling crawler 3a of each traveling device 3 is rotationally driven or rotationally stopped to be controlled. Reference numeral 1 is a configuration for controlling traveling or traveling stop.

On the rear side of the grain storage tank 12 for discharging the grains stored in the grain storage tank 12 to the outside of the machine,
A discharge support cylinder 42 having a vertical transfer spiral 42a installed therein is provided so as to be pivotable in a substantially vertical posture, and the upper end portion of the discharge support cylinder 42 has its entire length extending in the longitudinal direction of the combine 1 to the outside of the machine. A discharge auger 43 in which a discharge spiral 43a that discharges is retractably installed is disposed in the front-rear direction so as to be expandable, contractible, vertically rotatable, and horizontally rotatable.

As shown in FIG. 10, a switch 33 is provided which is turned on and off by stepping on or releasing the stepping petal 7, and, for example, a hydraulic cylinder 44 driven by hydraulic pressure is provided on the hydraulic cylinder 44. This is a configuration in which one end of the plug-in cable 45 is attached. The inner 45a on the other side of the take-in cable 45 is provided with the left lever 35.
The outer 45b is attached to the right lever 35b. The switch 33 is turned on / off by the stepping-on or the stepping-down operation of the scraping petal 7, and the hydraulic cylinder 44 is interlocked with the ON-OFF of this switch.
Is controlled to start and stop, and the left and right levers 3 are controlled by the inner 45a and outer 45b of the take-in cable 45.
5a, 35b and the left and right shifters 34c, 34d, the side clutch 6a in the traveling mission case 4,
The configuration is such that 6b is operated "on" and "off".

The switch 33 is turned on by stepping on the take-up petal 7, and the hydraulic cylinder 44 is operated in conjunction with the turn-on of the switch 33, and the left and right side clutches are provided via the take-in cable 45 and the like. 6a and 6b are disengaged, and the left and right clutch plates 6d and 6e are pushed to apply a brake.

As a result, the traveling mission case 4
The left and right side clutches 6a and 6b in the inside are disengaged by depressing the scraping petal 7 to turn on the switch 33,
By interlocking with this ON, the hydraulic cylinder 44 is operated to perform the operation, so that the left and right side clutches 6a and 6b are surely disengaged, and the brake is applied to surely stop the traveling.

The left and right direction control push cylinders 46a and 46b whose operation is controlled by operating the scraping petal 7
11 and 12, and left and right equalizer devices 47a and 47 that rotatably support roller wheels 31e and 31e provided on the left and right sides at the front and rear of the substantially central portion on the left and right sides as shown in FIGS.
The configuration of the hydraulic circuit for controlling the left and right equalizer cylinders (traveling direction switching cylinders) 48a and 48b for operating b is as shown in FIG. The control of the left / right direction control push cylinders 46a, 46b and the left / right equalizer cylinders 48a, 48b is mainly shown in FIG.
This will be described with reference to the hydraulic circuit diagram indicated by 3.

As shown in FIG. 13, hydraulic oil is stored in the hydraulic tank 49. This hydraulic oil is absorbed by the hydraulic continuously variable transmission 24, and the hydraulic continuously variable transmission 24 rotates. The hydraulic oil is supplied to the cylinders of each part of the combine 1 by driving, and the cylinders of these parts are operated.

The left / right direction control push cylinder 46
As shown in FIG. 13, the hydraulic oil from the hydraulic continuously variable transmission 24 is controlled by the filter 50a, the pump 50 and the pump 50a.
c, the filter 50b, and the priority flow dividing valve 50d, the electromagnetic switching valve 51a provided on the upstream side of the priority flow dividing valve 50d.
And the take-in valve 51b are controlled to be switched to the open position, and oil is sent to the left / right direction control push cylinders 46a, 46b via these valves 51a, 51b, and these left
The right direction control push cylinders 46a and 46b are configured to perform a stroke operation. The used hydraulic oil is returned to the hydraulic tank 49.

The left / right direction control push cylinder 46
The left and right equalizer cylinders (traveling direction switching cylinders) 48a and 48b are activated after the strokes a and 46b are activated. Further, the equalizer valve 52b, which will be described later, is not operated during the mowing operation by the automatic mowing direction control and the use of the scraping petal 7.

The hydraulic oil in the hydraulic tank 49 is stored in the left / right direction control push cylinder 46 as shown in FIG.
The pressure relief valve 5 provided on the lower side of the left and right equalizer cylinders 48a and 48b after the stroke operation of a and 46b.
2a and the equalizer valve 52b are switched and controlled to an open position, and oil is fed from these respective valves 52a and 52b to the left and right equalizer cylinders 48a and 48b through the left and right check valves 53a and 53b, and these The left and right equalizer cylinders 48a and 48b are configured to perform a stroke operation. The used hydraulic oil is returned to the hydraulic tank 49.

When the traveling direction switching lever 26 is tilted, the hydraulic oil is controlled to open and switch between the power steering valve 52c, the pressure release valve 52a and the equalizer valve 52b, and the left and right check valves 53a, 53a, Via 53b,
Oil is sent to the left and right equalizer cylinders 48a and 48b, and these left and right equalizer cylinders 48a and 48b are supplied.
Is a stroke-operated structure. The used hydraulic oil is returned to the hydraulic tank 49.

The telescopic cylinder 17 and the auger cylinder 5
5a, the left and right rolling cylinders 55b and 55c, and the pitching cylinder 55d are all inoperative, as shown in FIG.
As shown by 3, the hydraulic oil from the hydraulic continuously variable transmission 24 is
The filter 50a, the pump 50c, the filter 50b, the priority flow dividing valve 50d, the check valve 53c, and the relief valve 53d are returned to the hydraulic tank 49 through the pipe 53e.

The telescopic cylinder 17 and the auger cylinder 5
5a, the left / right low rig cylinders 55b, 55c, and the pitching cylinder 55d, when one or more of them are operated, the cylinders 17, 55a, 55 to be operated
Each electromagnetic switching valve 54a, 54b, 54c, 54d, 54e provided at the front stage of b, 55c, 55d is switched to the open position, and the hydraulic oil from the hydraulic continuously variable transmission 24 is
From the filter 50a, the pump 50c, the filter 50b, and the priority flow dividing valve 50d, the cylinders 17 and 55 to be operated
Each cylinder 17, 55a, 55b, 55c, 5 to be operated via each electromagnetic switching valve 54a, 54b, 54c, 54d, 54e at the front stage of a, 55b, 55c, 55d.
Oil is sent to 5d and these cylinders 17, 55a, 5
5b, 55c and 55d are configured to operate by stroke.

As a result, the left / right equalizer cylinders 48a, 48b are conventionally provided with the left / right saddle clutch 6
With the configuration in which the left and right direction control push cylinders 46a and 46b for brake control by a and 6b are branched and connected, in this circuit configuration, the cutting operation is performed by the automatic cutting control and the scraping petal 7 is removed. During use, due to the influence of the left and right equalizer cylinders 48a and 48b,
The movements of the right direction control push cylinders 46a and 46b were not sufficient, which was a problem in terms of performance. However, these problems are provided by providing the take-in valve 51b and the equalizer valve 52b to provide the left and right direction control push cylinders 46a. , 46b
The left and right equalizer cylinders 48a and 48b are operated separately to eliminate the above-mentioned problems and improve the performance.

The take-up valve 51 and the equalizer valve 52b are individually arranged as shown in FIG. 13, and the take-up valve 51b is provided on the same base.
And an equalizer valve 52b. With this, since the take-in valve 51b and the equalizer valve 52b are provided separately, it is not necessary to change the electromagnetic switching valve 51a that is the main valve, and it is possible to share each model. Further, it is effective in downsizing and cost reduction. Further, it is easy to maintain and change the circuit.

The structure of the hydraulic circuit for controlling the left / right direction control push cylinders 46a, 46b by operating the scraping petal 7 is as shown in FIG. These left
The control of the right direction control push cylinders 46a and 46b will be mainly described with reference to the hydraulic circuit diagram shown in FIG.

As shown in FIG. 14, the hydraulic oil tank 49 has a structure in which hydraulic oil is stored. This hydraulic oil is absorbed by the hydraulic constant transmission 24, and the hydraulic constant transmission 24 is rotationally driven. Thus, the hydraulic oil is supplied to the cylinders of the respective parts of the combine 1, and the cylinders of the respective parts are operated.

The left / right direction control push cylinder 46
The control of a and 46b is performed when the scraping petal 7 is used.
As shown in FIG. 14, hydraulic oil from the hydraulic continuously variable transmission 24 is supplied to the filter 50a, the pump 50c, the filter 50b,
A solenoid valve 55e for scraping petal is provided between the priority diversion valve 50d and the direction control switching solenoid valve 55f provided on the upstream side.
These solenoid valves 55e, 55f are ON-controlled, and oil is fed to these solenoid valves 55e, 55f, and is fed to the left / right direction control push cylinders 46a, 46b.
6a and 46b are stroke-operated. The used hydraulic oil is returned to the hydraulic tank 49.

Thus, the conventional configuration is such that the scraping petal solenoid valve 55e is provided between the left / right direction control push cylinders 46a and 46b and the direction control switching solenoid valve 55f. In addition, there is a case where both are not turned on at the same time, it is necessary to perform an ON operation at the same time, a two-system operation system is required, and the airframe 1a may run away when each solenoid valve malfunctions. (When the solenoid valve for the scraping petal is not turned on, only the left direction control push cylinder operates.) These problems can be solved by the present invention.

By operating the scraping petal 7, operation control of the left and right direction control push cylinders 46a and 46b,
The configuration of the hydraulic circuit for controlling the braking is shown in FIG.
As shown by 5. The control of the left / right direction control push cylinders 46a and 46b will be mainly described with reference to the hydraulic circuit diagram shown in FIG.

As shown in FIG. 15, the hydraulic oil tank 49 has a structure in which hydraulic oil is stored. This hydraulic oil is sucked into the hydraulic continuously variable transmission 24, and the hydraulic continuously variable transmission 24 rotates. By the drive, the hydraulic oil is supplied to the cylinders of the respective parts of the combine 1, and the cylinders of these respective parts are operated, and the hydraulic oil in the hydraulic tank 49 is swept, and the tilting operation of the petal 7 and the traveling direction are performed. Switching lever 26
Left and right direction control push cylinder 4 by tilting operation
It is the structure which sends oil to 6a, 46b. The left and right direction control push cylinders 46a, 46b have variable relief valves at the R ports (pressure rising ports). Two swallowing petal relief valves 56a and one power steering relief valve 56b are connected in series so that the swallowing petal relief valve 56a is linked to the sweeping petal 7 and the power steering relief valve 56b is linked to the traveling direction switching lever 26. This is the configuration provided.

The left / right direction control push cylinder 46
As shown in FIG. 15, the hydraulic oil from the hydraulic continuously variable transmission 24 is controlled by the filter 50a, the pump 50 and the pump 50a.
c, the filter 50b, the priority flow dividing valve 50d, the direction control switching solenoid valve 55f provided on the lower side of the priority flow dividing valve 50d, and the sweeping petal solenoid valve 55.
Both e and O operate simultaneously when operating the scraping petal 7.
N-controlled, these solenoid valves 55e and 55f
Through the left and right direction control push cylinders 46a, 46
Oil is sent to b, and the left and right direction control push cylinders 46a and 46b are stroke-operated. The used hydraulic oil is returned to the hydraulic tank 49.

Further, the hydraulic oil in the hydraulic tank 49 is operated by the scraping petal 7 and the traveling direction switching lever 26 as shown in FIG.
Scraped petal relief valve 5 provided on the lower side of 6a, 46b
6a, through the power relief valve 56b, oil is fed to the left / right direction control push cylinders 46a, 46b, and by the left / right direction control push cylinders 46a, 46b,
The brake is applied to both. The working pressure of pistons (not shown) of these left / right direction control push cylinders 46a, 46b is varied from the initial pressure to the total pressure (relief pressure) by the stepping amount of the scraping petal 7.

The left / right direction control push cylinder 46
This is a configuration for performing the stroke operation of a and 46b and the operation of applying the brake. Thus, conventionally, when the scraping petal 7 is operated, the left / right direction control push cylinder 4 is
The pistons (not shown) of 6a and 46b move by the clutch stroke and stop, but due to the lack of a boosting mechanism thereafter, depending on the state of the pawls of the left and right side clutches 6a and 6b, these left and right clutches may be completely removed. Side clutches 6a, 6
In some cases, the state where b cannot be completely removed occurs, and the traveling may not be completely stopped. However, according to the present invention, since the traveling stop control and the operation of applying the brake are performed, these problems occur. Could be resolved.

The construction of the hydraulic circuit for stopping traveling by operating the scraping petal 7 is as shown in FIG. A switching valve 57 for controlling switching by operating the scraping petal 7.
a is provided between the left / right direction control push cylinders 46a and 46b and the main valve 57b as shown in FIG. 16, and these cylinders 46a and 46b and the main valve 5 are provided.
7b is connected.

Priority flow dividing valve 50 of the main valve 57b
In this configuration, the surplus flow side of d is connected to the switching valve 57a. When the switching valve 57a is in the neutral (N) position, the excess flow is returned to the main valve 57b.
Further, by performing the switching operation control of the switching valve 57a to the C side, the surplus flow is sent to the left / right direction control push cylinders 46a and 46b, and the push cylinder 4
This is a configuration in which pistons (not shown) in 6a and 46b are operated by a clutch stroke.

As a result, conventionally, the control flow divided by the main valve 57b is made to flow to the left / right direction control push cylinders 46a, 46b, and the push cylinders 4a, 46b are controlled.
Since the pistons 6a and 46b were stroke-operated, the operating speed of these pistons was slow, and the pressure was low, which did not result in a reliable traveling stop state. , The excess flow, not the control flow of the main valve 57b, is pushed to the push cylinder 4
By flowing to 6a and 46b, the operating speed of the piston is fast and the pressing pressure of the piston can be appropriately increased. Moreover, since the control flow is flowing to the main circuit, it is possible to operate the cutting operation at the same time.

The construction of the hydraulic circuit for stopping traveling by operating the scraping petal 7 is as shown in FIG. In the hydraulic circuit diagram shown in FIG. 17, the hydraulic oil from the hydraulic continuously variable transmission 24 is divided into oil feed to the main valve 57b side and oil feed to the switching valve 58a side by branching, and this switching is performed. This is a configuration in which a single-acting cylinder 58 that operates with hydraulic oil that is sent through the valve 58a is provided.

As shown in FIG. 18, the traveling mission case 4
"On" the left and right side clutches 6a and 6b, which are installed inside.
Opening / closing arms 59, 59 are provided on the outside of the traveling mission case 4 to be turned off.
A single-acting cylinder 58 is provided between 9 and 59. By operating the scraping petal 7, in conjunction with this operation,
The single-acting cylinder 58 is actuated to operate the left and right side clutches 6a and 6b "on" and "off".
A spring 59a is provided between the opening / closing arms 59, 59.
Is provided to prevent the left and right side clutches 6a and 6b from coming off spontaneously. Further, the left / right direction control push cylinders 46a, 46b are connected to the left / right side clutches 6a, 6
It is configured not to be used for "ON" and "OFF" of b.

As a result, when the scraping petal 7 is operated, the single-acting cylinder 58 is operated in conjunction with this operation, and the left and right side clutches 6a, 6b are "engaged".
By operating "Off", the operation speed is fast,
It is independent of pressure, which ensures a positive stop.

The construction of the hydraulic circuit for stopping traveling by operating the scraping petal 7 is as shown in FIG. Switching valve 6 for switching control by operating the scraping petal 7
0a branches the hydraulic oil from the pump 50c as shown in FIG. The switching valve 60a is provided between the left / right direction control push cylinders 46a, 46b and the main valve 57b, and these push cylinders 46a, 46b are provided.
And the main valve 57b are connected. A priority diversion valve 50d is provided on one side of the branch, and the control flow is connected to the switching valve 60a. The excess flow is configured to be returned to the main valve 57b, but on one side of the branch,
The configuration is such that the check valves are connected via a check valve 60b.

By operating the switching valve 60a, the control flow rate is sent to the left / right direction control push cylinders 46a and 46b via the switching valve 60a.
Each push cylinder 46a, 46b has a structure in which each piston (not shown) installed in each push cylinder operates a clutch stroke.

Thus, conventionally, the control flow branched by the main valve 57b was made to flow to each piston installed in the left / right direction control push cylinders 46a, 46b, and each piston was actuated by the clutch stroke. In such a case, the traveling speed of each piston is slow and the pressure is low, so that the traveling stop may not be performed reliably. However, according to the present invention, it is not the control flow of the main valve 57b, but the newly provided branch flow. By flowing the control flow rate (required flow rate) of the valve 50d to each piston in the push cylinders 46a and 46b, the operating speed of each piston can be increased and the pressing pressure of each piston can be appropriately increased. or,
By inserting the diversion valve 50d, the operation became possible at the same time as the mowing work.

The construction of the hydraulic circuit for stopping traveling by operating the scraping petal 7 is as shown in FIG. Switching valve 60 for switching control by operating the scraping petal 7
As shown in FIG. 20, a branches the hydraulic oil from the pump 50c to the main valve 57b side. The switching valve 60a is
It is provided between the left / right direction control push cylinders 46a and 46b and the main valve 57b, and these push cylinders 46a and 46b are connected to the main valve 57b.

A fixed throttle 60c is provided on one side of the branch, and by operating the switching valve 60a to be connected,
The entire flow rate is sent to the push cylinders 46a, 46b,
Each push cylinder 46a, 46b has a structure in which each piston (not shown) installed in each push cylinder operates a clutch stroke.

As a result, conventionally, the control flow divided by the main valve 57b was made to flow to each piston installed in the left / right direction control push cylinders 46a, 46b, and each piston was operated for the clutch stroke. In such a case, since the operating speed of each piston is low and the pressure is low, the traveling stop may not be performed reliably. However, according to the present invention, not the control flow rate but the entire flow rate is stored in the push cylinders 46a and 46b. It is possible to increase the operating speed of each piston and to appropriately increase the pressing pressure of each piston by flowing the same to each piston.

The direction switching relief valve 26a is shown in FIG.
The structure is as shown in FIG. The direction switching relief valve 26a is configured by screwing a lower lower power steering metal 61a and an upper upper power steering metal 61b.
A push pin 62 is provided in the lower power steering metal 61b.
The support rod 26c formed by fixing a and the pin collar 62b is vertically movably inserted. This support rod 26c
Is moved up and down by the switching operation of the traveling direction switching lever 26, and the nozzle 62c provided on the lower side is controlled to be moved up and down via the spring 62d, and the hydraulic oil is moved from (P) to (T).
The oil is sent as indicated by the dotted line.

In the inner diameter portion of the upper power steering metal 61b, as shown in FIGS. 21 to 24, an oil groove 61c is spirally provided between the inner diameter shoulder portion and the oil reservoir groove 61d.
Further, inside the seal 63a provided on the inner diameter portion, the seal 63a is prevented from being deformed (squeezed out or caught) to prevent oil leakage. For example, the backup link 63b made of urethane material is provided.

As a result, the push pin 62a of the support rod 26c is subjected to an eccentric load and the operating cycle is short, so that the push pin 62a becomes high in temperature, and therefore the seal portion of the seal 63a is sealed. Out,
Also, biting occurs, but this can be prevented by providing the pack-up link 63b. Further, by providing the oil groove 61c in the inner diameter portion of the upper power steering metal 61b of the direction control relief valve 26a, it is possible to prevent the oil from being broken due to high temperature.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a scraped petal portion.

FIG. 2 is an enlarged plan view of the operation unit.

FIG. 3 is an enlarged side view of the operation unit.

FIG. 4 is an enlarged rear perspective view of an operating device section.

FIG. 5 is an enlarged side view of the operation section and the take-in cable section.

FIG. 6 is an enlarged rear view of the traveling mission case section.

FIG. 7 is an enlarged side view of the right side portion of the traveling mission case portion.

FIG. 8 is an enlarged side view of the left side portion of the traveling mission case portion.

[Fig. 9] Overall side view of the combine

FIG. 10 is a view showing another embodiment, which is an enlarged side view of the operation section and the sweep-in cable section.

FIG. 11 is a side view of the traveling device section, showing another embodiment.

FIG. 12 is a view showing another embodiment, which is an enlarged side view of a wheel portion of the traveling device.

FIG. 13 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 14 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 15 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 16 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 17 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 18 is a view showing another embodiment, which is an enlarged front view of a single-acting cylinder portion.

FIG. 19 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 20 is a diagram showing another embodiment, which is a hydraulic circuit diagram.

FIG. 21 is a view showing another embodiment, which is an enlarged front sectional view of a traveling direction switching relief valve portion.

FIG. 22 is a view showing another embodiment, which is an enlarged front sectional view of the upper power steering metal of the traveling direction switching relief valve portion.

FIG. 23 is a view showing another embodiment, and is an enlarged front sectional view of a seal portion of a traveling direction switching relief valve portion.

FIG. 24 is an enlarged sectional view taken along line AA of FIG. 22.

[Explanation of symbols]

2 vehicle chassis 3 traveling devices 4 Running mission case 6a Left side clutch 6b Right side clutch 7 Petal 8 Locking means 9 Thresher 10 reaper 26 Travel direction switching lever 26a Directional relief valve 36 scraped cable

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takuji Komatsu             No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture             Technology Department Co., Ltd. F term (reference) 2B076 AA03 BA05 DA02 DB06 DC02                 3D052 AA11 BB13 BB14 DD04 EE01                       FF01 GG04 HH01 HH02 HH03                       JJ02 JJ14 JJ21 JJ22 JJ23                       JJ31

Claims (2)

[Claims] 1. A traveling device 3 on both left and right sides of a lower side of a traveling chassis 2, a traveling mission case 4 in front of the traveling chassis 2 which rotationally drives the traveling device 3, and a traveling mission case 4
The left and right side clutches 6a and 6b installed in the
In a combine provided with a scraping petal 7 or the like for running or stopping the travel by operating only the right side clutches 6a and 6b to “on” and “disengage”, the left and right sides can be operated by stepping on the scraping petal 7. The clutches 6a and 6b are disengaged to stop the traveling of each traveling device 3, and a lock means 8 for locking the traveling device 3 is provided so that the traveling device 3 is prevented from traveling.
0 and the operation of the threshing machine 9 are provided so as to continue the operation. 2. The locking means 8 is provided so as to directly actuate a direction switching relief valve 26a which is operated by operating a traveling direction switching lever 26 from a scraping petal 7 via a scraping cable 36. The traveling operation device of the combine according to claim 1.