JP2522922B2 - Operation lever device in combine - Google Patents

Description

TECHNICAL FIELD The present invention relates to an operating lever device in a combine, and more specifically, an operating lever device for controlling various drive means by operating the operating lever in the front-back and left-right directions. Regarding

(B) Conventional technology Conventionally, the operation lever device in a combine is provided separately from the operation lever that steers the machine to the left and right and the operation lever that moves the pretreatment unit up and down. Each of them had to be replaced and operated, and the operation was extremely complicated, and a large number of other control operation levers were also provided, which was a cause of erroneous operation. Also, every time the operator changes the holding position of the operating lever, the operator has to move the line of sight to the operating lever, and further distract the driver's posture to operate, which causes fatigue of the operator. Therefore, an attempt has been made to enable the steering in the left-right direction and the vertical movement of the pretreatment unit by the crosswise operation in the left-right direction and the front-back direction with a single lever.

(C) Problems to be solved by the invention.

However, according to the above-mentioned cross-direction operating lever,
Since the up and down movement of the pretreatment unit and the operation direction of the left and right movement are different, the alignment and the raising and lowering of the pretreatment unit when turning and entering the next process after one cutting process become a two-stage motion, Compared with the conventional one that uses both hands, it has the drawback that both operations cannot be performed at the same time and the alignment timing is lost.

(D) Means for Solving the Problem Accordingly, the present invention has an object to solve the above-mentioned problems, and is provided with an operation lever position detecting means capable of detecting the operation position in the left-right and front-back directions of the operation lever. Control the left and right side clutch drive means based on a signal from the left and right position detecting means, and control the elevating and lowering drive means of the preprocessing section based on a signal from the position detecting means based on an operation of the operating lever in the front-rear direction. Simultaneous operation means operated by a push button is provided on the handshake portion of the operation lever, and the left and right side clutch drive means is combined with the left and right side clutch drive means based on a signal from the left and right position detection means when the simultaneous operation means is turned on. Both driving means of the pretreatment section elevating and lowering drive means are configured to be controlled at the same time, and in that case, the grain culm detection sensor provided in the grain culm transfer path of the pretreatment section is provided with It is characterized in that the pretreatment section is driven upward when it is sensed, and the pretreatment section is driven downward when the grain culm is not sensed.

(E) Action By using the above-mentioned means, when the operating lever is in the neutral position, both the left and right side clutches are engaged and the vehicle is in a straight traveling state, and when the operating lever is operated in the left-right direction, the operation is detected by the left-right position detecting means. Further, the left and right side clutch drive means is controlled based on the detection, and the left or right side clutch is disengaged to correct the direction of the machine body. When the operating lever is further operated in the front-rear direction, the front-rear position detecting means detects the operation, and based on the detection, the pre-processing portion elevating drive means is controlled to move the pre-processing portion up and down. Further, when the operation lever is operated in the left-right direction while the push button is being pressed, the simultaneous operation drive means is switched, and both the drive means of the pre-processing section elevating drive means are controlled simultaneously in accordance with the left and right side clutch drive means. , The left or right side clutch is disengaged, the direction of the aircraft is corrected, and the pre-processing unit moves up and down.

(F) Example Hereinafter, an example according to the present invention will be described with reference to the drawings.

As shown in FIG. 2, the combine 1 has a machine body 3 supported by a crawler 2, and the machine body 3 is equipped with an engine, an automatic threshing machine 5 and a Glen tank 6 having a discharge cylinder 6a. In addition, a driver's seat 7 is provided, and a pretreatment section 9 is supported in front of the machine body 3 by a hydraulic cylinder so as to be able to move up and down.

Further, a grain culm detection sensor SK for detecting the presence or absence of a harvested grain culm is arranged in the grain culm transfer path of the pretreatment unit 9, and the lower part of the pretreatment unit 9 comes into contact with a field scene to move forward. Processing unit 9
A cutting height sensor SH is provided to detect the above ground height.

Further, a cross-direction operation lever 10 is arranged on the operation panel 7a of the driver's seat 7 so that it can be operated forward and backward and left and right. As shown in FIGS. 1 (a) and 1 (b), the operating lever 10 has a pre-processing portion descending position at its forward operating position D and a pre-processing portion ascending position at its rearward operating position U. There is also a right side clutch disengagement position CR in the right operation position R, and there is a right brake operation position BR that operates the right brake with a strength according to the operation amount based on a larger operation. , Also to its left operation position L,
First, there is a left side clutch disengagement position CL, and a left brake actuation position BL for actuating the left brake with a strength corresponding to the operation amount based on further operation, and the lever 10
There is a neutral position N in the upright position, and the lever 10 is biased by a spring so as to always return to the neutral position N. Further, a switch Sp operated by the push button 10a is arranged at the handshake portion of the operation lever 10. Switches SD and SU are provided at the front-rear operation positions D and U of the operation lever 10, and a switch S is provided at the left-right operation positions L and R, respectively.
L and SR are provided and are turned on by operating the operation lever 10 to the position.

Then, as shown in FIG. 3, the rotation of the engine E is transmitted to the automatic threshing machine PTO 12 via the gear device 11, and the drive side split pulley 13, the driven side split pulley 15 and the belt 16 are also provided.
Is transmitted to the continuously variable transmission 17. Further, the rotation of the continuously variable transmission 17 is transmitted to the preprocessing unit PTO 19, and the second speed clutch 20, the first speed clutch 21, and the reverse clutch are also transmitted.
22 via the left side clutch 23L and the right side clutch 23R, and further via the left wet type disc brake 26L operated by the hydraulic cylinder 25L and the right wet type disc brake 26R operated by the hydraulic cylinder 25R.
Is transmitted to the sprocket 27 that drives the.

In addition, as shown in FIG.
Is connected to a hydraulic cylinder 30 that operates the continuously variable transmission 17 to increase or decrease speed. In addition, the pre-treatment section lifting valve 31
Is connected via a check valve 32 to a hydraulic cylinder 33 that moves up and down the pretreatment unit 9. Further, the handling depth control valve 35 is provided so that the harvested grain culms are conveyed at an appropriate position.
It is communicated with a hydraulic cylinder 36 for rotating the carrier to the deep handling side or the shallow handling side. Also, a valve for tilting the grain discharge cylinder
37a is connected to a hydraulic cylinder 39a that tilts the discharge cylinder 6a of the Glen tank 6. Furthermore, the valve for erecting the discharge cylinder 3
7b is communicated with a hydraulic cylinder 39b for operating the discharge cylinder 6a of the Glen tank 6 upright. In addition, 40 is a hydraulic pump, 41
Is an oil tank, and 42a and 42b are filters.

Further, as shown in FIG. 5, the left side clutch / brake operating valve 43L is connected to a hydraulic cylinder 45L for operating the left side clutch 23L and a hydraulic cylinder 25L for operating the left brake 26L, and also on the right side. The clutch operating valve 43R is a hydraulic cylinder 45R that operates the right side clutch 23R, and a hydraulic cylinder that operates the right brake 26R.
The cylinder and valve constitute a steering clutch / brake circuit 46 which is communicated with the 25R. Further, the forward clutch operating valve 47 is the first speed clutch 21.
Is connected to a hydraulic cylinder 49 for operating the second speed clutch 20, and a reverse clutch operating valve 51 is connected to a hydraulic cylinder 52 for operating the reverse clutch 22. The main shift clutch circuit 53 is constituted by the valve and the valve. A relatively high pressure hydraulic pump 55 is used, and an electromagnetic proportional control valve 56 is interposed in a relief circuit communicating with the discharge side of the pump 55.
As shown in FIG. 6, the drainage flow rate is adjusted according to the change in the current acting on the solenoid 56a based on the operating angle of the operating lever 10 to adjust the pressure acting on the left and right brake hydraulic cylinders 25L, 25R. In the figure, numeral 57 is an accumulator.

Then, as shown in FIG. 7, the main switch SW and the respective switches SL, SR, SU, SD, SP, and the grain stem detecting switch S
K, the main switch 64 of the cutting height automatic control circuit 63, are connected. That is, the left switch SL arranged at the leftward operating position L of the operating lever 10 is connected to the relays R5 and R7 via the normally open contacts R11 and R12 operated by the relays R11 and R12, and in parallel with the relay R6. It is connected to the. When the relay R6 is energized, the normally closed contact R6 of the side clutch is turned off, and the left solenoid 43Ll of the left side clutch / brake operating valve 43L is de-energized, so that the left side clutch
23L is cut.

Further, the right switch SR arranged at the right operation position R of the operation lever 10 is connected to the relays R8 and R10 via normally open contacts R11 and R12 operated by the relays R11 and R12, and at the same time, the relay R9. It is connected to the. When the relay R9 is energized, the normally-closed contact R9 of the side clutch is turned off, the right solenoid 43Rl of the right side clutch / brake operating valve 43R is de-energized, and the side clutch 23R is disengaged.

The rear switch SU provided at the rearward operating position U of the operating lever 10 is connected to the timer relay TR3. When the timer relay TR3 is energized, the normally open contact TR3 for raising the pretreatment section is turned on, the left solenoid 31 of the pretreatment section lifting valve 31 is energized, the pretreatment section 9 is raised, and the cutting height is increased. The timed operation contact b TR3 interposed in the automatic control circuit 63 is turned off, and the automatic control of the cutting height is released.

Further, the front switch SD arranged at the front operation position D of the operation lever 10 is connected to the relay R4. When the relay R4 is energized, the normally open contact R4 for lowering the pretreatment section is turned on, the solenoid 31r of the pretreatment section lifting valve 31 is energized, and the pretreatment section 9 is lowered.

Further, the switch Sp operated by the push button 10a is connected to the relays R11, R12 via the a, b contacts 67, 68 operated by the relay R13 connected to the grain culm detection sensor Sk, and the switch Sp is When turned on, the relay R11 or R12 is energized and the normally open contact R11 or R1 of the left and right switches SL, SR
2 is turned on so that relays R5, R8 or R7, R10 can be energized.

And normally open contacts R5, R8 operated by relays R5, R8
Is connected to a monostable multivibrator 62, and the relay R15 is activated by the output from the monostable multivibrator 62.The relay R15 operates to open the normally open contact R15 for descending the pretreatment section. When turned on, the right solenoid 31r of the pretreatment section lifting valve 31 is energized,
The pretreatment section is lowered.

The relay R13 is connected to the switch Sk of the grain culm detection sensor, and the automatic relation control unit 60 such as the automatic direction control and the automatic depth control is connected to the switch Sk. When the grain culm detection sensor Sk detects the transported grain culm and it is switched on, automatic control works and the relay R13 operates, and its contacts 67 and 68 are turned on and off in reverse, and the relay R12 operates when the contact 68 turns on. Then, the normally open contacts R12, R12 of the left and right switches SL, SR are turned on, and the relay R7 or R10 can be energized. And the relay
The monostable multivibrator 61 is also connected to the normally open contacts R7 and R10 operated by R7 and R10, and the relay R14 is activated by the output from the monostable multivibrator 61. By this operation, the normally open contact R14 for raising the pretreatment section is turned on, the left solenoid 31 of the pretreatment section lifting valve 31 is energized, and the pretreatment section rises.

The relays R14 and R15 are operated by interposing a monostable multivibrator, and the pushbutton switch SP is turned on once to operate for a predetermined time. With this setting, the pretreatment unit can be automatically lowered or raised to a predetermined position without being pressed continuously.

In addition, the cutting height automatic control circuit 63 is activated by the operation of relay R14.
By turning off the normally-closed contact R14 provided at, the automatic cutting height is released when the pretreatment section is raised. Then, the cutting height automatic control circuit 63 uses the relay R
4, R8, R5 etc. Normally open contact R that operates in connection with the lowering of the pretreatment section
Relay R16 which has 4, R8, R5 and is activated by turning them on
A contact that energizes the self-holding contact 65 and the automatic cutting height control circuit 63 by the operation of this relay R16.
66 is turned on.

Further, left and right potentiometers 79L, 79R are connected in parallel with the main switch Sw, and the potentiometers 79L, 79R are connected.
The voltage value of 9R is output to the control unit 80. Furthermore,
Output signals are output from the control unit 80 to the relays R1 and R2 and the electromagnetic proportional pressure valve 56. The left potentiometer 79L is actuated when the operating lever 10 is largely rotated to the left brake actuating position BL, and the relay R1 is energized in accordance with the actuation to turn on the normally-open contact R1 of the brake, and the left potentiometer 79L is turned on. The right solenoid 43Lr of the side clutch / brake operating valve 43L is energized, and the left wet disc brake is applied.
26L is activated.

Further, the right potentiometer 79R is operated when the operation lever 10 is largely rotated to the right brake operation position BR,
With the operation, the relay R2 is energized to turn on the normally open contact R2 of the brake, and the right solenoid 43Rr of the right side clutch / brake operating valve 43R is energized.
The right wet disc brake 26R is activated. Further, the left and right potentiometers 79L, 79R output a voltage value according to the operation angle of the operating lever 10 to the control unit 80, and an output signal corresponding to the voltage value is output from the control unit 80 to the solenoid 56a of the solenoid proportional control valve 56. Has been output to.

Further, the contacts 70 and 71 are operated by a signal from a direction sensor (not shown) via the automatic-related control unit 60, and the left and right side clutches are intermittently connected to perform automatic direction control. Further, the contacts 72, 73 are operated by the signal from the cutting height sensor SH via the cutting height automatic control circuit 63 to automatically control the elevation of the pretreatment section. The automatic relation control unit 60 is turned on when the grain culm is detected by the grain culm detection switch SK, and is not activated when the grain culm is not conveyed such as when the grain culm is not sensed, that is, when turning.
The cutting height automatic control circuit 63 is in the operating state because the contacts 65 and 66 are turned on by the relay R16 by turning on the lowering switch SD once, and are kept in the operating state.
Alternatively, the contact TR3 or the contact R3 is turned off when the contact R14 is turned off so that the pretreatment section can be raised to a predetermined height regardless of the detection of the cutting height sensor.

Since the present embodiment is configured as described above, when the cross-direction operation lever 10 is rotated to the backward operation position U, the switch SU is turned on and the timer relay TR3 is energized. When the relay TR3 is energized, the normally open contact TR3 for raising the pretreatment section is turned on, the left solenoid 31 of the pretreatment section lifting valve 31 is excited, the valve 31 is switched, and the pressure oil of the pump 40 is checked by the check valve. Hydraulic cylinder through 32
It is sent by pressure to 33, the cylinder 33 extends, and the pretreatment unit 9 is raised. When the operation lever 10 is rotated to the forward operation position D, the switch SD is turned on and the relay R4 is energized. When the relay R4 is energized, the normally open contact R4 for descending the pretreatment section is turned on, the right solenoid 31r of the pretreatment section lifting valve 31 is excited, and the check valve 3
2 open. Then, the oil in the hydraulic cylinder 33 is communicated with the tank 41 via the check valve 32 and the lifting valve 31.
The hydraulic cylinder 33 contracts and the pretreatment unit 9 is lowered. Further, when the operating lever 10 is in the neutral position N, both switches SU and SD are in the off state, so that the solenoids 3 are
All 1,31r are in the non-excited state, the pretreatment section lifting valve 31 is in the closed state, and the pretreatment section 9 is held in the stopped state. Further, at the neutral position N of the operating lever 10 and the longitudinal operating positions D and U, the left and right side clutches 23
Although L and 23R are turned on and the combine 1 is in the straight traveling state, when the operation lever 10 is rotated to the left side clutch disengaged position CL of the left operation position L, the switch SL is turned on and the relay R6 is energized. It When the relay R6 is energized, the normally closed contact R6 of the left side clutch is turned off, and the left solenoid 43Ll of the left side clutch / brake operating valve 43L is switched off. Therefore, the left side clutch / brake operating valve 43R is left. Only the solenoid 43Rl is on,
The hydraulic cylinder 45L for the left side clutch is drained, the left side clutch 23L is disengaged, and the combine 1 is corrected in the left direction. Further, when the operation lever 10 is largely rotated to the left brake operating position BL, the left potentiometer 79L is operated, and the normally open contact R1 of the left brake is turned on by energizing the relay R1 to operate the left side clutch / brake. The right solenoid 43Lr of the valve 43L is excited, and hydraulic oil of a certain pressure P shown in FIG. 6 is sent to the hydraulic cylinder 25L for operating the left brake, and the left wet type disc brake 26
L is activated. At this time, the current acting on the solenoid 56a of the solenoid proportional valve 56 is changed in accordance with the operation angle of the operation lever 10, and the flow rate for draining the relief circuit communicating with the discharge side of the hydraulic pump 55 is adjusted to adjust the left brake. The pressure acting on the hydraulic cylinder 25L that operates 26L is adjusted.
Then, as shown in FIG. 6, a hydraulic cylinder for operating the left brake is produced according to the operation amount of operating the operation lever 10 to the left.
Pressure oil is applied to 25L, and the left wet type disc brake 26L is operated with a brake pressure according to the operation amount of the operation lever 10.
When the operation lever 10 is rotated to the right side clutch disengagement position CR in the rightward operation position R, the switch SR is turned on and the relay R9 is energized. The normally closed contact R9 of the side clutch is turned off by energizing the relay R9, and the left solenoid 4 of the right side clutch / brake operating valve 43R is turned on.
3Rl is switched off, so that the right side clutch 23R is disengaged and the combine 1 is corrected to the right. Further, when the operation lever 10 is largely rotated to the right brake operating position BR, the right potentiometer 79R is operated and the relay R2 is energized, and the relay R2 is energized to normally-open contact R2.
Is turned on. Then, through the normally open contact R2, the right solenoid 43Rr of the right side clutch / brake operating valve 43R.
Is excited and the right disc brake 26R is activated. At this time, pressure oil is sent to the hydraulic cylinder 25R for operating the right brake according to the operation amount of operating the operation lever 10 to the right,
The right wet type disc brake 26R is operated with a brake pressure according to the operation amount of the operation lever 10.

Next, a case will be described in which the operation lever 10 is operated in the left-right direction in the same manner as above while the push button Sp of the operation lever 10 is being pressed to turn on the push switch Sp.

When the operation lever 10 is turned to the left operation position L with the push switch Sp turned on, the switch Sp
The normally open contact R11 is turned on by energizing the relay R11 by the ON operation of. Then, the left operation position L of the operation lever 10
When the switch SL is turned on, the switch SL is turned on, the relay R6 is operated as described above, the left side clutch 23L is disengaged, and the relay R5 is energized via the contact R11.
When the relay R5 is energized, the normally open contact R5 is turned on and input to the monostable multivibrator 62, the output of which operates the relay R15 for a predetermined time. Due to the operation of the relay R15, the normally-open contact R15 for pretreatment lowering is turned on, the right solenoid 31r is excited, and the check valve 32 opens and the pretreatment section descends.

Also, with the push switch Sp turned on,
When the operation lever 10 is rotated to the right operation position R, the relay R11 is energized to turn on the normally open contact R11. When the switch SR is turned on, the normally closed contact R9 of the side clutch is turned off via the relay R9, the right side clutch 23R is disengaged, and the relay is connected via the contact R11.
The normally open contact R8 is turned on by energizing R8, and the right solenoid is activated by the operation of the monostable multivibrator 62 as described above.
31r is excited and the pretreatment section descends.

In any of the above cases, the grain culm detection switch SK does not detect the grain culm, but when the grain culm is being conveyed and the grain culm detection switch SK is on, the contact is made by energizing the relay R13. Since the on / off of 67 and 68 are reversed and energization by the push switch SP activates the relay R12,
Operation lever with push switch Sp turned on
When 10 is rotated to the left operation position L, the normally open contact R12 is turned on by energizing the relay R12 by turning on the switch Sp. Then, the switch SL is also turned on, the relay R6 is operated as described above, the left side clutch 23L is disengaged, and the relay R7 is energized via the contact R12. When the relay R7 is energized, the normally open contact R7 is turned on and input to the monostable multivibrator 61, the output of which operates the relay R14 for a predetermined time. By the operation of this relay R14, the normally open contact R14 for raising the pretreatment is turned on, the left solenoid 31 is excited, and the elevating valve 31 is switched to raise the pretreatment section. Further, when the operation lever 10 is rotated to the right operation position R, the relay R12 is energized, and the switch SR is also turned on, so that the normally closed contact R9 of the side clutch is connected via the relay R9. When turned off and the right side clutch 23R is disengaged, the contact R
The normally open contact R10 is turned on by the energization of the relay R10 via 12, and the right solenoid 31 is excited by the operation of the monostable multivibrator 61 in the same manner as described above, and the pretreatment section rises.

In this way, the pre-processing section elevating and lowering means of the simultaneous driving means based on the signals from the left and right position detecting means SL and SR in the state where the simultaneous operation means Sp is turned on, the grain culm is being conveyed and the grain culm detection sensor is the grain culm. At the time of detection, the pre-processing unit is driven up, and when no grain is detected, it is controlled to move down, so that the command by the simultaneous operation means is automatically judged to be up and down according to the operating state of the grain detection sensor. The drive means is adapted to be driven.

Therefore, while pushing the push switch Sp,
The pre-treatment section can be moved up and down in accordance with the left and right movements by simply operating the left and right sides of the machine.However, at the time when there is still a transferred grain culm at the end of mowing, the pre-treatment section is raised to move the transported grain culm. Since the pre-processing section descends during the line adjustment when there is no longer a line, there is no erroneous operation with the operation of only one operating lever, and there is no loss of timing. It is possible to carry out a rounding operation.

In addition, since the pre-processing section elevating drive at that time is configured to elevate and lower the pre-processing section via the monostable multivibrator for a predetermined time, the operation lever 10 for left and right traveling and the operation of the push switch Sp simultaneously operated are operated. Regardless of the length of time, the pretreatment unit is moved up and down by a predetermined amount, so that the inconvenience caused by the excess and deficiency of the amount of lifting during traveling is eliminated, and the driver can perform a comfortable driving without worrying about the amount of lifting.

(G) Effect of the Invention As described above, according to the present invention, the push button 10a
You can raise and lower the pre-processing unit according to the left and right movements by simply operating the operating lever 10 while holding down, so you have to change the operating levers and perform the rotating operation of the aircraft and the raising and lowering operation of the pre-processing unit. This frees you from the hassle of having to do it, and allows you to perform reaping work smoothly.

Moreover, if the turning operation is performed after one cutting process, the grain culm detection sensor SK provided in the grain culm transfer path detects the grain culm, so that the pretreatment section rises at the same time, and when the next cutting process is started. If the turning operation of the line is performed, the grain culm detection sensor SK does not detect the grain culm, so the pretreatment section descends at the same time, without losing the timing at all times and without causing an erroneous operation. It is possible to carry out the traveling and the raising and lowering of the pretreatment section simultaneously at the same time.

[Brief description of drawings]

FIG. 1 is an operating lever according to the present invention, (a) is a front view thereof, (b) is a plan view thereof, FIG. 2 is a side view showing a combine to which the present invention can be applied, and FIG. 3 is a transmission system thereof. FIG. 4, FIG. 5 and FIG. 5 are hydraulic circuit diagrams of different parts, FIG. 6 is a diagram showing a relationship between an operating angle of an operating lever and a hydraulic pressure of a hydraulic cylinder for operating a brake, and FIG. 7 is an electric circuit according to the present invention. It is a circuit diagram. 1 ... Combine, 6a ... Discharge cylinder, 9 ... Pretreatment section, 10
...... (Cross direction) operation lever, 10a …… Push button, SD, S
U, SL, SR …… Front / rear / left / right position detection means (switch), 31,31r …… Up / down drive means (solenoid), 43
Ll, 43Rl …… Left and right side clutch drive means (solenoid), Sp …… Simultaneous operation means (switch), Sk …… Grain culm sensor.

Claims (1)

(57) [Claims] 1. A combine (1) having an operation lever (10) that can be operated in the left-right and front-rear directions from a neutral position (N) can detect the operation position in the left-right and front-rear directions of the operation lever (10). Operating lever position detecting means (SD), (SU), (SL), (SR) are provided, and left and right side clutch drive means (43L1) based on signals from the left and right position detecting means (SL), (SR). , (43R1) and also controls the elevation drive means (31), (31r) of the preprocessing section (9) based on the signals from the front and rear position detection means (SD), (SU), and the operation lever. Press the push button (10
a) is provided, and simultaneous operation means (Sp) that is turned on by pressing the push button is provided, and the left and right side clutches are based on a signal from the left and right position detection means when the simultaneous operation means is turned on. Both driving means of the pretreatment section lifting drive means are configured to be controlled simultaneously with the driving means, and at that time, a grain culm detection sensor (SK) provided in the grain culm transfer path of the pretreatment section, An operating lever device in a combine, wherein the pretreatment unit is driven upward when the grain culm is sensed, and the pretreatment unit is driven downward when the grain culm is not sensed.