JPH0759444A - Cutting traveling speed-controlling apparatus - Google Patents

Abstract

PURPOSE:To prevent a trouble such as the clogging of a cutting apparatus, threshing apparatus, etc., and enable a smooth cutting work by controlling the maximum traveling speed of a machine body during cutting traveling in an appropriate speed range. CONSTITUTION:A running speed-change lever 2 enables the infinitely variable speed-change operation of the running driving speed of a running apparatus 1 by tilting the running speed-change lever 2 back and forth. A cutting-clutch lever 4 enables the on-off control of the driving force transmission to a cutting apparatus by switchably tilting back and forth. Those levers 2 and 4 are laterally attached close to each other on a cutting traveling speed-controlling apparatus. Further, the cutting clutch lever 4 is provided with an engaging member 5 which is placed in the locus of the back and forth tilting of the running speed- change lever 2 by tilting the cutting clutch lever 4 into the connection side of the driving force transmission and prevents the running speed-change lever 2 to tilt beyond a specified angle in the forward acceleration side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling the upper limit of the traveling speed of a mowing operation in a combine or the like.

[0002]

2. Description of the Related Art Conventionally, a combine or the like is provided with a speed change drive device which is driven by an engine and continuously changes the drive speed of a traveling device. And in the control section,
A travel shift lever for shifting the shift drive device is provided. The traveling speed shift lever is configured to be tiltable in the front-rear direction, and is configured such that by tilting from the neutral position to the front, the forward speed increase of the traveling speed according to the tilt angle is obtained. Further, the shift lever is configured to obtain a backward acceleration of the traveling speed according to the tilt angle by tilting backward from the neutral position.

Further, the combine or the like is provided with a reaping clutch for turning on and off the transmission of the driving force to the reaping device. Further, the control section is provided with a mowing clutch lever for turning on and off the mowing clutch. The reaping clutch lever is configured to be tiltable by switching in the front-rear direction. The reaping clutch is held in the disengaged state by the rearward switching tilt, and is kept in the engaged state by the forward switching tilt. Is configured as follows.

During mowing work, the mowing clutch lever is used.
And tilt to drive the harvesting device,
A work device such as a threshing device is also driven, and in this state, the traveling speed change lever is tilted and adjusted forward by a small angle to move the machine body forward at a low speed.

[0005]

The mowing work with the combine and the like cannot be performed in a high-speed running state because the threshing device has a limited processing capacity. For this reason, it is usually necessary to perform the mowing work while advancing the aircraft at a relatively low speed. That is, during the mowing operation, the traveling speed shift lever should not be tilted forward beyond an angle that provides a traveling speed suitable for the mowing operation.

However, in the conventional combine and the like,
Since there is no means for restricting the forward tilt angle of the traveling speed shift lever, there is a fear that the operator may inadvertently tilt the vehicle forward greatly when operating it by an unfamiliar operator to make the mowing traveling speed too high. In such a case, the grain culm exceeding the processing capacity of the mowing device, the threshing device, or the like will be mowed, and the grain culm will be clogged in each part, and the work cannot be continued.

Further, when the mowing work is not performed, it is necessary to enable high-speed traveling and to enhance the moving ability when traveling on the road such as movement between fields. In such a case, there should be no means for restricting the forward tilt angle of the traveling speed change lever to a low speed range.

[0008]

In order to solve the above problems, the present invention takes the following technical means. That is, the traveling gearshift lever-2 that allows the traveling drive speed of the traveling device 1 to be continuously changed by tilting in the front-rear direction, and the driving force transmission to the reaping device 3 can be turned on and off by switching tilting in the front-rear direction. The reaping clutch lever-4 and the reaping clutch lever-4 are provided close to each other on the left and right, and the reaping clutch lever-4 is tilted toward the drive force transmission entrance side of the traveling gearshift lever-2. It is arranged in the back-and-forth tilting locus, and
Is provided with an engaging portion 5 for preventing the forward speed-increasing side tilting of a predetermined angle or more.

[0009]

When performing the harvesting work with the combine or the like, first, the harvesting lever 3 is tilted to the drive force transmission entry side to drive the harvesting device 3. As a result, the engaging portion 5 provided on the reaping clutch lever-4 is arranged in the forward / backward tilt locus of the traveling transmission lever-2. With this,
It also drives other work equipment such as threshing equipment.

Then, in this state, the traveling transmission lever-2 is tilted from the neutral position to the forward speed increasing side, and the traveling device 1 is driven to cause the machine body to travel forward. As a result, the grain stalks to be planted in the field are cut forward by the harvesting device 3 while traveling. During such mowing traveling, as described above, since the engaging portion 5 provided on the mowing clutch lever-4 is arranged within the forward and backward tilting locus of the traveling gearshift lever-2, the traveling gearshift lever-2 is excessively large. The forward acceleration-side tilting is prevented by the engaging portion 5.

As a result, the traveling speed of the machine body can be kept in an appropriate speed range for the mowing work, and smooth mowing work can be carried out without causing any trouble such as clogging of the mowing device 3 or the threshing device. In addition, when traveling on the road, such as when moving between fields, and when traveling after cutting one side of a mowing operation (when making a corrective turn toward the other side), the above-mentioned mowing is usually performed to ensure safety and promote durability. The device 3 is stopped. That is, the reaping clutch lever-4 is tilted to the driving force transmitting side when traveling on the road and traveling.

As a result, the cutting clutch lever-4 is provided.
The engaging portion 5 provided at the position is retracted from the forward / backward tilt locus of the travel speed change lever-2, and as a result, the travel speed change lever-2 can be tilted to the maximum speed position on the forward speed increasing side. As a result, when the mowing work is not performed, it becomes possible to increase the speed to the maximum forward speed, and the traveling ability during traveling on the road such as movement between fields,
In addition, it is possible to enhance the direction correction turning ability at the time of turning after the end of the mowing work.

If the arrangement position of the engaging portion 5 provided on the reaping clutch lever-4 in the forward / backward tilt locus of the traveling shift lever-2 can be arbitrarily changed and adjusted, the reaping operation can be performed in the reaping operation state. The traveling speed limit of can be changed and set arbitrarily.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail by exemplifying a combine threshing device. The combine fuselage is provided with a machine base 7 above the left and right traveling devices 6, 6 (1) of the endless track type, and a threshing device 8 and a grain storage device 9 are provided in parallel on the machine base 7. In addition, a control unit 10, an engine 11, etc. are further provided. In front of the threshing device 8, a mowing device 3 is provided so as to be able to move up and down.

The traveling devices 6 and 6 are provided with a roller frame 12
A plurality of groups of 13 wheels that are pivotally attached to the vehicle and a traveling mission case
The wheel sprockets 15 and 15 driven by the roller 14 are wound with the rollers 16 and 16. The control part 10 is arranged on one side of the front part of the machine base 7, and the engine 11 is arranged in the lower rear part of the control part 10.

A double-ply type main output pulley 17 driven by the output shaft of the engine 11 and an input shaft 18 protruding from the inner side surface of the traveling mission case 14 toward the inside of the vehicle body. The traveling transmission belt 20 is wound around the provided traveling input pulley 19. Further, a mowing support base 21 is erected on the machine base 7 at the other side portion spaced apart from the control unit 10. The harvesting device 3 is supported on the upper end of the harvesting support base 21 by a horizontal shaft so as to be vertically rotatable. In this state, the mowing input pulley 22, which is the drive input source of the mowing device 3, is arranged inside the machine body with respect to the mowing support base 21. Then, a mowing transmission belt 25 is wound around the mowing output pulley 24 provided on the mowing output shaft 23 protruding from the outer surface of the traveling mission case 14 toward the outside of the machine body and the mowing input pulley 22. Furthermore, a reaping clutch 27 is provided by arranging a reaping tension roller 26 for turning on and off the transmission of the driving force by loosening the tension of the reaping transmission belt 25.

In the upper front part of the threshing device 8, a threshing input pulley 28 serving as a drive input source for each part of the threshing device 8 is provided.
To place. Then, the threshing transmission belt 29 is wound around the threshing input pulley 28 and the main output pulley 17. Further, a threshing tension roller 30 is provided for turning on and off the transmission of the driving force by loosening the tension of the threshing transmission belt 29, whereby the threshing clutch 3
Make up 1.

On the other hand, in the control section 10, the seat 3
A front operation panel 33 is provided in front of 2, and a steering lever 34 and a handle 35 are erected on the front operation panel 33. The steering lever 34 engages and disengages left and right side clutch gears (not shown) in the traveling mission case 14 with respect to a center gear (not shown) by tilting in the left and right directions. With this, the drive of the left and right wheel sprockets 15 and 15 is turned on and off to steer the machine body. In addition, by tilting the steering lever 34 in the front-back direction, the reaping device 3 is moved up and down with respect to the machine base 7.

Further, the seat 3 in the control section 10
A side operation panel 36 is provided on the inner side of the fuselage 2.
Then, the side operation panel 36 is provided with a traveling speed change lever.
2. Erect a mowing clutch lever-4 and a threshing clutch lever-37. The traveling shift lever-2 is axially rotatably pivoted in a front-rear direction and a left-right direction on a station 39 fixed to a body side wall 38 of the control section 10, and an arm 40 integrated with the shift lever-2. Is connected to a speed changing arm 41 of the continuously variable transmission of the traveling mission case 14 with a length adjustable rod 42. With this configuration, the continuously variable transmission is operated to the forward and high speed side as the traveling gear shift lever-2 is tilted forward from the neutral position in the substantially upright state, and the continuously variable transmission is tilted rearward from the neutral position. The transmission is operated to the backward high speed side.

The harvesting clutch lever-4 is pivotally mounted on the side 43 of the side operation panel 36 so as to be rotatable in the front-rear direction, and the arm 44 integral with the harvesting clutch lever-4. It is connected to the support arm 45 of the mowing tension roller 26 of the mowing clutch 27 via a length adjustable rod 46 and a tension spring 47. With this configuration, when the reaping clutch lever -4 is switched and tilted rearward, the reaping clutch 27 is disengaged to stop the reaping device 3, and when the reaping clutch lever -4 is tilted by switching forward, the reaping The clutch 27 is engaged and operated to drive the harvesting device 3.

Further, the threshing clutch lever 37 is axially rotatably pivoted in the front-rear direction coaxially with the reaping clutch lever-4 to a step 43 which is integral with the side operation panel 36, and the threshing clutch lever 37 is slidable. Arm 48 integrated with clutch lever 37
The threshing tension roller 30 of the threshing clutch 31.
The support arm 49 is connected to the support arm 49 via a length adjustable rod 50 and a tension spring 51. With this configuration, when the threshing clutch lever 37 is switched to the rear and tilted, the threshing clutch 31 is disengaged to operate the threshing device 8.
Is stopped, and when the threshing clutch lever 37 is switched and tilted forward, the threshing clutch 31 is operated to be operated and the threshing device 8 is driven.

On the other hand, the side operation panel 36 is provided with a traveling shift lever guide groove 52, a reaping clutch lever guide groove 53, and a threshing clutch lever guide groove 54 which are elongated in the front-rear direction. The travel speed shift lever guide groove 52, the reaping clutch lever guide groove 53, and the threshing clutch lever guide groove 54 are provided in this order in the order closer to the seat 32 and in close proximity to each other and in parallel with each other.

Further, the traveling shift lever guide groove 52 is
In a plan view, the forward low speed range shift groove 5 in the front-rear direction intermediate portion
5 is configured to have a bent shape that is deviated toward the seat 32 from the forward high speed range shift groove 56 in the front part and the reverse shift range 57 in the rear part. Then, the traveling shift lever
The traveling gearshift lever-2 is provided so as to project upward from below the guide groove 52. Thereby, the travel shift lever-2 is
When the neutral position is located at the rear of the forward low speed range shift groove 55, the continuously variable transmission of the traveling mission case 14 is in the drive stopped state, and the traveling of the machine body is stopped. Further, when the traveling gear shift lever-2 is tilted forward from the neutral position, the arm 4 integrated with the traveling gear shift lever-2 is accordingly moved.
0, via the length-adjustable rod 42, the gearshift arm 41 of the continuously variable transmission of the traveling mission case 14 is turned to the forward high speed side, and as a result, the machine body accelerates the forward running. It will be going. In addition, the travel shift lever-2 is
When tilting backward from the neutral position, according to this,
The gearshift arm 41 of the continuously variable transmission of the traveling mission case 14 is rotatably operated to the low speed side through an arm 40 and a length-adjustable rod 42 which are integrated with the traveling gearshift lever-2.
As a result, the aircraft will accelerate the backward travel.
The traveling shift lever-2 is the traveling shift lever-guide groove 5
(2) The maximum speed of forward and reverse movements is when tilted to the front and rear ends. In such a traveling shift operation, when the traveling shift lever-2 is rotated from the forward low speed range shift groove 55 to the forward high speed range shift groove 56, the traveling shift lever guide is accompanied with this. Due to the bent shape of the groove 52,
The reaping clutch lever guide groove 53 side is tilted and approached.

On the other hand, the reaping clutch lever guide groove 53.
Has a linear shape in a plan view, and the cutting clutch lever-4 is projected upward from below. When the reaping clutch lever-4 is switched to the rear end of the reaping clutch lever-guiding groove 53 and tilted, the reaping clutch 27 is in the disengaged state and the reaping device 3 is in the stopped state. Also,
When the cutting clutch lever-4 is switched and tilted to the front end of the cutting clutch lever guide groove 53, the arm 44 and the length adjustable rod 46 integrated with the cutting clutch lever-4 are tilted.
Also, the support arm 45 is forcibly rotated via the tension spring 47. And the reaping tension roller 2
6 becomes a state in which a transmission tension is applied to the reaping transmission belt 25. As a result, the reaping clutch 27 is turned on and the reaping device 3 is driven.

The threshing clutch lever 37 and the threshing clutch lever guide groove 54 are also constructed in the same manner as the reaping clutch lever-4 and the reaping clutch lever guide groove 53. Then, the reaping clutch lever
4 also serves as a grip portion, and the seat 32
Side, that is, the engaging portion 5 that is bent toward the travel shift lever-2 side is attached. Further, the engaging portion 5 is configured such that the mounting position of the engaging portion 5 can be adjusted in the longitudinal direction of the cutting clutch lever-4 by a position changing type using a fixing pin P or a screwing type using a screw V, whereby the cutting clutch is provided. The lever-4 can be adjusted for expansion and contraction. With this configuration, in a state in which the mowing clutch lever-4 is switched and tilted to the front end of the mowing clutch lever guide groove 53, the engaging portion 5 causes the engaging portion 5 to move in the forward high speed range gear groove 56 of the travel gear shift lever guide groove 52. It is located above. Further, by changing and adjusting the mounting position of the engaging portion 5 with respect to the tip of the mowing clutch lever-4, the arrangement position of the engaging portion 5 above the forward high speed range shift groove 56 is changed and adjusted in the front-rear direction. be able to.

The combine harvesting operation with the above configuration will be described. At the start of work, the engine 11 is driven to switch and tilt the harvesting clutch lever-4 and the threshing clutch lever 37 to the front end portion, and drive the harvesting device 3 and the threshing device 8. Then, in this state, the traveling speed change lever is
Gradually tilt 2 forward to speed up the aircraft, enter the uncut grain culm, and start mowing. The grain culm cut by the reaping device 3 is put into the threshing device 8 to undergo a threshing process, and the shredded grains are put into the grain storage device 9,
The straw is discharged outward from the rear part of the threshing device 8.

During the mowing operation, the mowing clutch lever 4 is tilted by switching to the front end portion as described above. Therefore, the engaging portion 5 provided at the tip of the cutting clutch lever-4 is arranged above the forward high speed region shift groove 56 of the traveling shift lever-2. Therefore, when the traveling shift lever-2 is tilted toward the forward and high speed side, the traveling maximum shift angle of the traveling shift lever-2 is restricted by the contact with the engaging portion 5. This can prevent excessive forward acceleration. Further, by changing and adjusting the mounting position of the engaging portion 5 with respect to the mowing clutch lever-4, the arrangement position of the engaging portion 5 above the forward high speed range shift groove 56 is changed and adjusted in the front-rear direction, and The maximum forward tilt angle can be changed and adjusted. That is, the maximum regulation speed can be arbitrarily changed and set.

A center gear 58 driven by the continuously variable transmission is provided in the traveling mission case 14.
Is attached to the side clutch shaft 59. Then, the side clutch gears 60, 60 that can be engaged with the center gear 58 from both left and right sides are attached to the side clutch shaft 59.
It is provided to be freely rotatable and axially slidable. Further, left and right counter gears 62, 62 are rotatably provided with respect to the counter shaft 61, and the left and right counter gears 62, 62 are always meshed with the left and right side clutch gears 60, 60. The left and right wheel drive gears 64, 64 attached to the inner ends of the left and right wheel shafts 63, 63 are always meshed with the left and right counter gears 62, 62. The left and right wheel sprockets 15, 15 are attached to the outer ends of the left and right wheel shafts 63, 63.

The left and right side clutch gears 6
The left and right slide shifters 65 and 65 are engaged with 0 and 60. The left and right slide shifters 65, 65 are shift arms 67, 67 attached to the inner end portions of the left and right shifter shafts 66, 66 protruding outside the traveling mission case 14.
Pivot on. Side clutch operation arms 68, 68 are attached to the outer ends of the left and right shifter shafts 66, 66.

On the other hand, a brake pedal 70 is arranged on the step 69 of the control section 10. The brake pedal 70 comprises a stepping surface 71 and an arm 72, and the base of the arm 72 is axially attached to the lower side surface of the step 69 so as to be vertically rotatable. A first pulley 73 is axially attached to the side surface of the intermediate portion of the arm 72. Further, on the lower surface of the step 69, the second pulley 74 is axially attached to the portion above the arm 72 and behind the first pulley 73. In addition, on the lower surface of the step 69, a locking step 75 is provided at an upper portion of the first pulley 73.
Fixedly installed. Further, a counter member 76 is attached to the fixed portion on the machine base 7 side by attaching a horizontal axis. The counter member 7
6 is an upper arm 77, a lower arm 78, and a lateral arm.
The frame 79 is integrally formed in the radial direction.

Then, one end of the operating wire 80 is locked to the locking step 75, and the operating wire 80 is fixed to the first wire.
After being wound around the lower side of the pulley 73, the second pulley 74 is
It hangs on the upper side of the counter member and hangs down, and is locked to the tip of the side arm 79 of the counter member 76. Further, between the tip of the upper arm 77 of the counter member 76 and the tip of the left side clutch operating arm 68, and between the tip of the lower arm 78 of the counter member 76 and the right side. The interlocking rod 8 is provided between the tip of the clutch operating arm 68 and
1, 81 are connected.

Further, side brakes 82, 82 engageable with the outer portions of the left and right side clutch gears 60, 60 are provided at both ends of the side clutch shaft 59. With the above structure, when the brake pedal 70 is depressed, the arm 72 is rotated downward to move the first pedal.
And the second pulley 7 and the first pulley 73 and the second pulley 7 are lowered.
And 4 are separated. At this time, one end of the operation wire 80 and the second pulley 74 are immovable with respect to the machine base 7, and as a result, the other end of the operation wire 80 is pulled up. Thereby, the lateral side
The arm 79 is rotated upward, and the upper arm 77 and the lower arm 78, which are integrated therewith, are rotated, whereby the interlocking rod 8
1, 81 via the side clutch operating arm 68,
Rotate 68. As a result, the left and right slide shifters 65, 65 slide in opposite directions to disengage the left and right side clutch gears 60, 60 from the center gear 58, and then the side brakes 82, 8 are released.
Engage 2. As a result, the transmission of the left and right side clutch gears 60, 60 and below is cut off, and the traveling device 6,
The driving of 6 is stopped. Since such a brake operation is performed by the pulling force of the operation wire 80 via the first pulley 73 and the second pulley 74 as described above, the brake pedal can be operated with a light operating force. 70 can be stepped on.

In addition, the control section 10 includes the control section 10
An auxiliary step 83 is provided to facilitate getting on and off. The base of the auxiliary step 83 is pivotally attached to the inner wall of the outer surface 84 of the step 69, and is rotatable in and out from an opening 85 formed in the outer surface 84. And
The auxiliary step 83 is rotated upward by a pulling operation of the storage wire 86 connected to the intermediate portion, and is stored below the step 69. Further, at the auxiliary step 83 storage position, the outside of the lower end portion of the overhanging operation lever 87 is brought into contact with the rotating end portion of the auxiliary step 83. The overhang operation lever 87 has an intermediate portion axially attached to the lower surface of the step 69 so as to be pivotable outward of the machine body against the pulling force of the return spring 88. The overhang operation lever 87 is rotated by an operation of rotating the overhang operation lever 87 toward the outside of the machine body.
The auxiliary step 83, which is in contact with the outside of the lower end portion, is pushed to the outside and extended outward from the opening 85 and rotated.
As a result, the auxiliary step 83 is in use.
In the state where the auxiliary step 83 is stored, the knob 89 of the storage wire 86 is locked to a locking member 90 provided above the step 69.

With the above-described structure, the operator can easily move the auxiliary step 83 in and out while the operator is still on the control section 10.

[Brief description of drawings]

FIG. 1 is a side view for explaining a main part of an embodiment of the present invention.

FIG. 2 is a front view for explaining a main part in one embodiment of the present invention.

FIG. 3 is a plan view for explaining the operation of the main part of the embodiment of the present invention.

FIG. 4 is a partial partial explanatory view of an embodiment of the present invention.

FIG. 5 is a partial partial explanatory view of an embodiment of the present invention.

FIG. 6 is a side view of the combine in the embodiment of the present invention.

FIG. 7 is a plan view of a combine according to an embodiment of the present invention.

FIG. 8 is a perspective view for explaining a part of the embodiment of the present invention.

FIG. 9 is a partial front view for explaining the embodiment of the present invention.

FIG. 10 is a partial explanatory side view of the embodiment of the present invention.

[Explanation of Codes] 1 traveling device 2 traveling speed lever 3 mowing device 4 mowing clutch lever 5 engaging part

Claims (1)

[Claims] 1. A travel speed change lever-2 that allows the travel drive speed of the travel apparatus 1 to be continuously changed by tilting in the front-rear direction, and a drive force transmission to the cutting device 3 by switching tilting in the front-rear direction. A mowing clutch lever-4 that can be turned on and off is provided close to each other on the left and right, and the traveling shift lever is provided on the mowing clutch lever-4 by tilting the mowing clutch lever-4 toward the driving force transmitting side. -2 in the forward and backward tilting locus, and
Is provided with an engaging portion 5 for preventing the forward speed-increasing side tilting of a predetermined angle or more.