JP2519028Y2 - Combine - Google Patents

Description

[Detailed Description of the Invention] (b) Industrial field of application The present invention relates to a combine in which a pretreatment unit is attached to a traveling machine body supported by a pair of left and right traveling devices, and more specifically, the traveling machine body is inclined. The present invention relates to a tilt control manual operation device that is operated so as to operate.

(B) Conventional technology Generally, in a combine, an operator operates a tilt control manual operation lever to elevate and lower the machine body with respect to the left and right traveling devices, and raises or lowers the machine body in parallel with the traveling device. In addition, the pretreatment elevating and steering manual operation lever is operated to elevate and lower the pretreatment section, and the combine is steered to the left or right.

(C) Problems to be solved by the invention By the way, in the case where the tilt control manual operation lever and the pretreatment lifting / steering manual operation lever are separately provided as described above, the number of operation levers increases. However, the operation became complicated and troublesome, and the cost became high.

Therefore, an object of the present invention is to provide a combine that solves the above-mentioned problems by configuring the pre-treatment elevating and lowering and steering manual operation lever to be switched to the tilt control manual operation lever by a changeover switch. It is a thing.

(D) Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances. For example, referring to FIGS. 1, 2, and 3, the traveling machine body (3) , A pair of left and right traveling devices (2, 2 ') capable of steering control, respectively, and supporting these traveling devices (2, 2').
A hydraulic cylinder (22, 22 ') for raising and lowering the body is respectively interposed between 2') and the traveling body (3), and a pretreatment section (5) can be freely moved up and down in front of the traveling body (3). In the combine (1), which is supported by the pretreatment unit (5) and the pretreatment unit lifting hydraulic cylinder (76) is interposed between the pretreatment unit (5) and the traveling machine body (3), Manual operation means for raising and lowering and steering (4) having four positions of up and down operations for raising and lowering the hydraulic cylinder (76) and left and right operations for left and right steering control.
0) and the manual operation means (60) for the pretreatment elevating and lowering and steering.
A switching switch (61) for switching the machine body lifting hydraulic cylinders (22, 22 ') to control it, and the pre-processing lifting and steering manual operation means (60) when the switching switch (61) is activated. ) Up, down, right, left operation of the left and right hydraulic cylinders (22, 22 ') for raising and lowering the machine body so that the traveling machine body (3) is operated in the ascending, descending, lowering right and lowering left directions. And a control means (69) for raising and lowering the machine body.

(E) Operation When the operator operates the pre-processing elevating and lowering and steering manual operation means (60) based on the above configuration, the pre-processing section (5) is raised or lowered or the combine is performed according to the operated position. (1) is steered to the left or right.

Further, when the operator actuates the changeover switch (61), the pretreatment lifting and steering manual operation means (60) is switched so as to control the machine body lifting hydraulic cylinders (22, 22 '). When the operator operates the manual operation means (60) while the changeover switch (61) is operating, the machine body lifting control means (69) causes the machine body lifting left and right hydraulic cylinders (22, 2).
2 ') is operated and controlled, and the traveling machine body (3) is operated in any one direction of ascending, descending, lowering to the right and lowering to the left according to the operated position of the manual operation means (60).

(F) Device of the Invention As described above, according to the present invention, the pre-processing lifting and steering manual operation means (60) is operated by the change-over switch (61) to the machine body lifting hydraulic cylinders (22, 22 '). Since it can be switched so as to control, the single manual operation means (60) can be used in common, the operation becomes simple, and the operability can be improved.

Furthermore, since the single manual operation means (60) can also be used,
The number of parts can be reduced and the cost can be reduced.

The reference numerals in parentheses refer to the drawings and do not limit the configuration in any way.

(G) Embodiment An embodiment according to the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the combine 1 has a machine body frame 3 which is supported by a pair of left and right crawler traveling devices 2, 2 ′ so as to be able to move up and down, and a transmission 4 is provided in front of the machine body frame 3. It is arranged. Further, in front of the machine body frame 3, a pretreatment unit 5 is supported so as to be able to move up and down. Since the crawler traveling devices 2 and 2'have the same configuration, only the configuration of the left crawler traveling device 2 will be described.

The crawler traveling device 2 has a track frame 6 over substantially the entire length thereof.
From the front, a first rolling wheel 7, front swing rolling wheels 9, 9 ', rear swing rolling wheels 10, 10', and fixed rolling wheels 11, 12 are attached. The front swing rollers 9 and 9'are swingably attached to the track frame 6 via a swing arm 13, and the rear swing rollers 10 and 10 'are swing arms.
It is swingably attached to the track frame 6 via 15, and it includes front swing rollers 9 and 9'and rear swing roller 1
0 and 10 'are configured to swing according to the field scene. Furthermore, a guide pipe is provided at the rear of the track frame 6.
A guider 16 is fixed, and an idler holder 17 is slidably inserted through the guide pipe 16. The idler holder
Reference numeral 17 extends to the rear of the track frame 6, and an idler 19 is rotatably supported at the rear end portion thereof.

A drive sprocket 20 is rotatably supported on the front side of the machine body frame 3 below the transmission 4, and an upper wheel 21 is rotatably supported on the lower center of the machine body frame 3. There is.

Further, one end of a machine body lifting hydraulic cylinder 22 is rotatably supported by a pin 23 at a central portion of the machine body frame 3, and the piston rod 22 of the machine body lifting hydraulic cylinder 22 is supported.
A lever 25 is rotatably supported at the tip portion of a via a pin 24. A connecting rod 26 is arranged below the hydraulic cylinder 22 for raising and lowering the machine body of the machine body frame 3, and one end of the connecting rod 26 is connected to the lever via a pin 29.
It is rotatably supported by 25 and its other end is rotatably supported by a lever 31 via a pin 30.

The lower end portion of the lever 25 is rotatably attached to the lower portion of the machine body frame 3 via a swing arm support shaft 32, and one end of a swing arm 33 is rotatable on the swing arm support shaft 32. With the lever inserted,
It is fixed at one end of 25. One end of a swing arm 36 is rotatably supported on the other end of the swing arm 33 via a pin 35, and the other end of the swing arm 36 is attached to the track frame 6 via a swing arm support shaft 37. It is rotatably attached. Further, one end of a hydraulic cylinder 39 for forward and backward movement of the machine body is rotatably supported on the upper part of the track frame 6 through a pin 38, and a pin 40 is provided at a tip portion of a piston rod 39a of the hydraulic cylinder 39 for forward and backward movement of the machine body. It is rotatably attached to the swing arm 33 via the.

The lower end of the lever 31 is a swing arm support shaft.
It is rotatably attached to the lower part of the machine body frame 3 via 41, and the swing arm support shaft 41 has a swing arm.
One end of 42 is rotatably inserted, and the lever 31
It is fixed at one end. One end of a swing arm 45 is rotatably supported on the other end of the swing arm 42 via a pin 43, and the other end of the swing arm 45 is attached to the track frame 6 via a swing arm support shaft 46. It is rotatably attached. Further, one end of an idler link 49 is rotatably supported at the tip of the swing arm 42 on the side of the swing arm support shaft 41 via a pin 47.
The other end of the idler connecting link 49 has the idler holder 17
It is rotatably attached via a pin 50.

Further, the drive sprocket 20, the first rolling wheel 7, the front swing rolling wheels 9 and 9 ', the rear swing rolling wheels 10 and 10', and the fixed rolling wheels.
A crawler 51 is wound around 11, 12, the idler 19, and the upper wheel 21.

In addition, as shown in FIG. 1, the operation control section includes a pre-processing lifting and steering operation lever 60, a push button switch 61 for switching, a body horizontal main switch 62, and a tilt setting for setting the tilt angle of the body. A dial 63 is provided. When the push button switch 61 for changeover is pressed, the pretreatment lifting and steering operation lever 60 moves the hydraulic cylinders 22, 22 'for lifting the machine body.
Is configured to be switched to control the.

Further, as shown in FIG. 3, a stroke sensor 65 for the left hydraulic cylinder 22 for raising and lowering the machine body, a stroke sensor 66 for the right hydraulic cylinder 22 'for raising and lowering the machine body, and an inclination sensor 67 are provided, and the pretreatment lifting and lowering Signals from the steering operation lever 60, the switching push button switch 61, the aircraft horizontal main switch 62, the tilt setting dial 63, the stroke sensors 65 and 66, and the tilt sensor 67 are input to the control device 68 and controlled. . Furthermore, signals from the pre-processing lifting / lowering and steering operation lever 60 and the switching push button switch 61 are transmitted to the control device 68.
Is input to and controlled by the control means 69 for raising and lowering the machine body.

When the machine body horizontal main switch 62 is ON, the machine body horizontal automatic pilot 70 is turned on. Furthermore, the control device
Based on the output from 68, the solenoid valve 71 actuates the left hydraulic cylinder 22 for raising and lowering the machine body to raise or lower the body frame 3, and the solenoid valve 72 operates the right hydraulic cylinder 22 'for raising and lowering the machine body to move the body frame. 3 is raised or lowered. Further, by the output from the control device 68,
The solenoid valve 75 actuates the hydraulic cylinder 76 for raising and lowering the pretreatment section to raise or lower the pretreatment section 5, and the solenoid valve 77 actuates the left and right side clutches for steering of the transmission 4 to connect and disconnect at the appropriate time, so that the combine 1 is operated. Turn left or right.

Further, as shown in FIG. 4, it is mounted on the right side clutch control switch 80, the right side brake control switch 81, the left side clutch control switch 82, the left side brake control switch 83, and the main shift lever. A speed position detecting potentiometer 85 is provided. Airframe horizontal main switch 62, right side clutch control switch 8
Signals from 0, the right side brake control switch 81, the left side clutch control switch 82, the left side brake control switch 83, the potentiometer 85, and the inclination sensor 67 are input to the control device 68 and controlled. Then, according to the output from the control device 68, the right hydraulic cylinder 22 'for raising and lowering the machine body
Lift solenoid valve 72 that operates the
a, a solenoid valve 72b for right lowering, a solenoid valve 71a for left raising for operating the left hydraulic cylinder 22 for raising and lowering the machine body in an ascending direction, and a solenoid valve 71b for lowering left are operated.

Further, an automatic horizontal control stop switch for stopping the automatic horizontal control by the tilt sensor 67 is provided on the grip portion 60a of the pre-treating lifting and steering operation lever 60.

Since the present embodiment is configured as described above, when the pretreatment lifting / steering operation lever 60 is operated in the direction of the arrow, the solenoid valve 75 operates the pretreatment unit lifting hydraulic cylinder 76. When the operation lever 60 is operated in the arrow direction, the solenoid valve 75 actuates the pretreatment portion lifting hydraulic cylinder 76 to raise the pretreatment portion 5. Further, when the operation lever 60 is operated in the direction of the arrow, the solenoid valve 77 disengages the left side clutch of the transmission 4 to steer the combine 1 to the left. When the operation lever 60 is operated in the direction of the arrow, the solenoid valve 77 is operated. Transmission 4
Disengage the right side clutch of and drive the combine 1 to the right.

In addition, when the push button switch 61 for changeover is pushed, the pretreatment lifting and steering operation lever 60 is moved to the hydraulic cylinder for lifting the machine body.
22 and 22 'are controlled, and when the operating lever 60 is operated in the direction of the arrow, the solenoid valve 72 for right lowering is moved.
b activates the right hydraulic cylinder 22 'for raising and lowering the machine, and the solenoid valve 71b for lowering the left activates the left hydraulic cylinder 22 for raising and lowering the machine to lower the body frame 3, and the operation lever 60 is operated in the arrow direction. Then, the solenoid valve 72a for rising right moves the right hydraulic cylinder 22 'for lifting the aircraft.
And the left ascending solenoid valve 71a actuates the left and right body hydraulic cylinders 22 for raising and lowering the body frame 3. Further, when the operation lever 60 is operated in the arrow direction while the changeover push button switch 61 is being pressed, the left lowering solenoid valve 71b operates the left hydraulic cylinder 22 for raising and lowering the machine body and the right raising solenoid valve. The valve 72a operates the right hydraulic cylinder 22 'for raising and lowering the machine body to lower the body frame 3 to the left. When the operating lever 60 is operated in the direction of the arrow, the solenoid valve 72b for lowering the right machine raises the right hydraulic pressure for raising and lowering the machine body. Cylinder 2
2'is operated in the descending direction, and the left ascending solenoid valve 71a operates the left and right body lifting hydraulic cylinders 22 in the ascending direction to lower the body frame 3 to the right.

When the push button switch 61 for changeover is pushed and the operating lever 60 is operated in the direction of the arrow for raising the machine body frame 3, the signal is input to the control device 68, and the control device 68 is operated.
When the solenoid valve 71 operates the left hydraulic cylinder 22 for raising and lowering the machine body by the output from 68, the piston rod 22a
Extends forward. In conjunction with the piston rod 22a,
Lever 25 and swing arm 33 are swing arm support shaft 32
The swing arm 36 is rotated downward with the fulcrum as a fulcrum and pushed down, and the lever 31 and the swing arm 42 are rotated with the swing arm fulcrum shaft 41 as a fulcrum through the connecting rod 26 to push the swing arm 45 downward. Therefore, the track frame 6 is pushed downward, that is, the body frame 3 is raised. Then, the idler connecting link 49 moves the idler holder 17 and the idler 19 forward in conjunction with the rotation of the swing arm 42 to reduce the distance between the fixed roller 12 and the idler 19, so that the circumference of the crawler 51 is reduced. It is kept constant without change. The right hydraulic cylinder 22 'for raising and lowering the machine body operates in the same manner.

Also, as shown in FIG. 4, the fuselage horizontal main switch
When 62 is turned ON, the body frame 3 is horizontally controlled according to the detection value of the tilt sensor 67. When the detected value of the tilt sensor 67 is within the dead zone, the automatic horizontal control is stopped. When the detected value of the tilt sensor 67 exceeds the dead zone and detects a downward descent, the right ascending solenoid valve 72a actuates the machine up / down right hydraulic cylinder 22 'in an ascending direction to make the machine frame 3 horizontal. . When the detection value of the tilt sensor 67 exceeds the dead zone and the leftward downward is detected, the left ascending solenoid valve 71a operates the left and right body up / down hydraulic cylinders 22 in the ascending direction to make the body frame 3 horizontal. During automatic horizontal control, when the operator operates the main transmission lever from the neutral position in the forward / rearward direction, or by operating the side brakes, the left and right side brake control switches 81,83
When is turned on, the automatic horizontal control by the tilt sensor 67 is stopped.

Also, while the operator steps on the clutch petal and left and right side clutch control switches 80, 82 are ON,
Also, after the clutch petal is released and the left and right side clutch control switches 80, 82 are turned from ON to OFF, the automatic horizontal control by the tilt sensor 67 is stopped for a certain period of time.

In addition, when the push button switch 61 for changeover is pushed, the pretreatment lifting and steering operation lever 60 is moved to the hydraulic cylinder for lifting the machine body.
Since it can be switched to control 22,22 ', one operation lever 60 can be used in common, and the operation becomes simple,
Operability can be improved.

Further, since only one operation lever 60 can be used, the number of parts can be reduced and the cost can be reduced.

Further, when the operator operates the main transmission lever from the neutral position in the forward / rearward traveling direction and when the side brake is operated, the automatic horizontal control by the tilt sensor 67 is stopped, so that the combine 1 is suddenly started or the side is stopped. When the brake is operated, the detection value of the tilt sensor 67 does not fluctuate significantly and the body frame 3 is not unnecessarily vertically controlled.

Further, while the operator depresses the clutch petal to reduce the vehicle speed, and after releasing the operation of the clutch petal to increase the vehicle speed, the automatic horizontal control by the inclination sensor 67 is stopped for a certain period of time. Therefore, the detected value of the tilt sensor 67 does not fluctuate significantly due to the change in acceleration during acceleration / deceleration, and the machine body frame 3 is not unnecessarily vertically controlled.

Further, when the detection value of the tilt sensor 67 is within the dead zone, the automatic horizontal control is stopped, so that the machine body frame 3 is not frequently vertically controlled.

Further, since the automatic horizontal control stop switch for stopping the automatic horizontal control by the tilt sensor 67 is provided in the grip portion 60a of the pretreatment lifting and steering operation lever 60, the automatic horizontal control switch 62 is turned on and automatically turned on. If work such as crossing the ridge, loading and unloading trucks, and loading is performed with the horizontal control still operating, the body frame 3 suddenly operates up and down, which poses a danger, but such a danger can be avoided.

[Brief description of drawings]

FIG. 1 is a perspective view of a driving operation part according to the present invention, FIG. 2 is a side view of a combine to which the present invention is applied, FIG. 3 is a system block diagram according to the present invention, and FIG. 4 is a clutch and brake system according to the present invention. 2 is a system block diagram of FIG. 1 ... Combine, 2 ... Traveling device (left crawler traveling device), 2 '... Traveling device (right crawler traveling device), 3 ...
… Running machine (machine frame), 5 …… Pre-processing unit, 22 ……
Left hydraulic cylinder for raising / lowering the machine, 22 ′ …… Right hydraulic cylinder for raising / lowering the machine, 60 …… Manual operating means for pre-treatment lifting and steering (pre-treatment lifting and steering operating lever), 61 …… Changeover switch (changeover) Push button switch), 69 ... Control means for raising and lowering the machine, 76 ... Hydraulic cylinder for raising and lowering the pretreatment section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Kashiwa 667 Isuyacho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. (56) Reference JP-A-2-186914 (JP, A) Kai 62-265904 (JP, A) JP 63-214107 (JP, A) JP 63-215433 (JP, A) JP 60-1225 (JP, U) JP H2-31428 (JP JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A traveling machine body is supported by a pair of left and right traveling devices each capable of steering control, and a machine body lifting hydraulic cylinder is interposed between the traveling devices and the traveling machine body. In a combine in which a pretreatment unit is movably supported by a front portion of a traveling machine body and a hydraulic cylinder for raising and lowering the pretreatment unit is interposed between the pretreatment unit and the traveling machine body, Manual operation means for raising / lowering and lowering operation of the hydraulic cylinder for controlling upward / downward movement, and left / right operation for left / right steering control, and manual operation means for raising / lowering the steering wheel; A changeover switch for changing over the manual operation means for steering to control the hydraulic cylinder for raising and lowering the machine body, and when the changeover switch is actuated, upper, lower, right, left operation of the manual operation means for pretreatment elevation and steering. Based on Can, combine to the left and right hydraulic cylinders for aircraft lift, the traveling machine body is raised, lowered, Migisage, the aircraft lift control means for controlling so as to be operated in the lower left down direction, comprising: a.