JPH064674Y2 - Travel control device for work vehicle - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention relates to a traveling control device for a working vehicle such as a combine harvester and a harvester. More specifically, it is used in a manual operation or the like. The present invention relates to a travel control device having travel operation means provided in the vehicle.

2. Description of the Related Art Conventionally, a work vehicle such as a combine harvests grain culms that have been planted in a field by operating a cutting blade and traveling while appropriately raising and lowering a pretreatment section. Further, even after the mowing work is finished, the pillow culms that have been mowed are left unthrushed in the headland part at the corner of the field, and the mowing part also falls or falls off the cutting blade. Grains may be left behind little by little due to reasons such as the above. Then, in order to process these unthreshed grain culms and uncut grain culms, the operator temporarily stops the operation of the combine while driving the automatic threshing device, gets out of the driver's seat, and leaves the uncut grain remaining in the field. The culms are collected by hand cutting and manually put into the opening of the threshing device with the feed chain for threshing work.

However, the above-mentioned conventional combine, when threshing the grain culm collected from the field in the state of being stopped at the same place, the straw by the work is discharged to the same place by the cutter or knotter, so it is as it is. If the work is continued, the straw is raised and the straw outlet of the cutter or the notter is clogged. Furthermore, if straw piles are made in several places in the field by this method, not only the appearance is bad but also the composting of straw is bad. Further, in order to carry the grain culms in the distant headland portion to the combine portion, the operator is forced to carry out a heavy labor and the efficiency is lowered. For this reason, the operator occasionally interrupts the manual handling work to remove the straw that has accumulated under the cutter or knotter, or returns to the driver's seat to move the aircraft to another location to continue the manual handling work. In particular, when there is only one operator or a small number of operators, manual operation and operation must be repeated, resulting in heavy labor, increasing the burden on the operator, and increasing alertness. There is a risk of being blunt and getting caught in the feed chain.

Therefore, by installing the operating means at a position other than the driver's seat and operating the operating means from the outside of the machine, the combine can be moved forward or backward at a preset speed without returning to the driver's seat each time. The applicant of the present invention has proposed a travel control device configured so that the aircraft can be moved while in the field.

(C) Problems to be Solved by the Invention However, the above-described traveling control device proposed by the applicant of the present invention has the operation means provided at a position different from the driver's seat of the machine from the continuously variable gear side. Since the operation means does not have a changeover switch for changing the mode, even if the operator is sitting in the driver's seat, if the operation means is accidentally operated from the outside of the machine body, the machine body is unintentionally operated by the operator. May start running, leading to danger such as an accident.

(D) Means for Solving the Problems The present invention is intended to solve the above-mentioned problems, and for example, as shown in FIGS. 1 (a), (b) and FIG. The continuously variable transmission 31 and the continuously variable transmission lever 13 are attached to the machine body 3.
And an actuator 32 for operating the continuously variable transmission 31 and a shift position detecting means 37 for detecting the shift position of the continuously variable transmission 31, the operator vehicle 1 is used when the machine body 3 is handled manually. The traveling operation means 19 and the work mode changeover switch 16 are installed, and the operation by the traveling operation means 19 is operated only when the work mode changeover switch 16 is turned on. Is.

(E) Action Based on the above-described configuration, when performing manual handling work such as collecting and threshing the grain culms left uncut in the field by hand cutting, the operator stops the work vehicle 1 at an appropriate work position, and continuously The speed change lever 13 is moved to the forward range F at its neutral position N.
(Or, it is set in the reverse drive range R) and is separated from the driver's seat 10, and the work mode changeover switch 16 is turned on. In this state, the operator starts the manual work, and when the work is completed, or the straw opening 18 of the automatic threshing device 6 is completed.
When a large amount of straw is piled up below (see FIG. 1 (a)), the traveling operation means 19 is operated to move the work vehicle 1 to another work position. Then, the operation amount of the actuator 32 is appropriately adjusted based on the operation of the traveling operation means 19, and the continuously variable transmission 31 is driven at the set speed. As a result, the work vehicle 1 is moved forward or backward at a predetermined set speed to move to the next work position, and is stopped when the operator stops the operation of the operation means 19. Then, the manual handling work is started again at the work position.

On the other hand, if the work mode selector switch 16 is not turned on and the mode remains switched to the driver's seat 10 side, the continuously variable transmission 31 and the like are operated even if the traveling operation means 19 is operated from outside the machine body 3. Therefore, it is possible to prevent erroneous operation of the traveling operation means 19.

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

The combine 1 has a crawler 2 as shown in FIG.
An automatic threshing device 6 having a feed chain 5 on one side thereof.
Are arranged. Further, in front of the machine body 3, a pretreatment section 7 is arranged so as to be able to move up and down, and a narrow guide 9 is installed on the side of the pretreatment section 7 so as to be able to rise and fall. Also,
A driver's seat 10 is arranged on the other side of the machine body 3,
An operation console 11 is arranged in front of the driver's seat 10, and a crank-shaped lever groove 12a (see FIG. 2) is formed on an operation panel 12 provided on the side thereof.
A continuously variable transmission lever 13 is swingably installed at 2a. In addition, the feed chain 5 in the automatic threshing device 6
A feed chain rail 15 is installed in the upper part of the frame, facing the chain 5 on the frame 14 via a spring s. And the feed chain rail 15
As shown in FIG. 1 (b), the front end portion 15a thereof is configured to be rotatable in the vertical direction about the fulcrum pin p, and the front end portion of the frame 14 is provided with a hand operation mode changeover switch 16. When the front end 15a of the feed chain rail 15 is rotated upward, the changeover switch 16 is pressed by the upper surface of the front end 15a to be turned on. The front end portion 15a is configured to be locked to one end of the frame 14 by a stopper 17 so as to hold the manual operation mode switch 16 in an ON state. In addition, the cover 6a of the automatic threshing device 6
An operation switch system 1 including a hand-operated traveling switch 19a, and in some cases, a leftward correction switch 19b and a rightward correction chain 19c (see FIG. 2) on the front side of the
9 are installed. In addition, what is shown by 18 in the figure is a straw mouth.

On the other hand, as shown in FIG. 2, the shift position by the continuously variable transmission lever 13 is detected by the potentiometer 20, and the detected value is input to the microcomputer 21 (hereinafter referred to as a microcomputer). Further, in the mission case 22 installed in the machine body 3, side clutch solenoids 26 and 27 for switching the left and right side clutches 23 and 25 are output from the microcomputer 21 to turn on and off, respectively, and the left and right side clutches 23 are output. , 25 are connected and disconnected as appropriate. In addition, the drive side split pulley 29
The driven side split pulley 30 constitutes a continuously variable transmission 31, and the hydraulic actuator 32 including a double-acting cylinder that changes the width of the drive side split pulley 29 is installed. Further, when the manual handling mode changeover switch 16 is turned on, the mode of the steering operation performed in the driver's seat 10 is changed over to the operation switch system 19. Therefore, in this state, the hand-operated traveling switch 1 of the operation switch system 19 is
9a (left-direction correction switch 19b and right-direction correction switch 19c) is configured to send an operation signal to the microcomputer 21 at the time of its operation, and a signal from the hand-operated traveling switch 19a is provided to the microcomputer 21. The data is input to the set means 33 and sent to the comparison means 35 also provided in the microcomputer 21. Further, the piston rod 36 of the hydraulic actuator 32 is connected to a potentiometer 37 for detecting the expansion / contraction position of the piston rod 36, and the detection value of the potentiometer 37 is input to the comparison means 35. . Then, the setting means 33 transmits a setting signal for causing the machine body 3 to travel at a low set speed to the comparison means 35, and when the solenoid valve 39 is operated by this, the expansion and contraction of the piston rod 36 is potentiated. It is detected by the meter 37 and input to the comparison means 35. Then, the detected value and the setting signal from the setting means 33 are compared by the comparing means 35, and as a result, the actuator 32 is further extended, contracted, or stopped so that the continuously variable transmission 31 responds to the set signal. It is configured so as to be in the gear shift position. In addition, the crank-shaped lever groove 12a formed in the steering panel 12 has a forward region F on one side and a reverse region R on the other side, and an intermediate region where the forward region F and the reverse region R are communicated with each other. The portion is in the neutral position N, and when the lever 13 is swung in the lateral direction of the body at the neutral position N to switch to the forward travel region F side or the reverse travel region R side, the hand-operated traveling switch 19a is operated. Then, the continuously variable transmission 31 is operated at a preset low speed while the main clutch 40 is connected by the above-described operation, and the combine 1 is moved forward or backward at the low speed. In addition, what is shown by 41 and 42 in the figure is an engine and a counter case, respectively.

In addition, V of the continuously variable transmission lever 13 in the reverse range R
9 to V9 in the forward drive range F, the entire process from the neutral position N to the V in the forward drive range F or the reverse drive range R is performed.
The potentiometer 20 is configured to detect the positive and negative values of the respective values. Further, the cylinder stroke of the hydraulic actuator 32 is detected by the potentiometer 37. However, by setting a set value at the position for operating the continuously variable transmission 31 at a low speed of the cylinder stroke, the continuously variable transmission lever can be set. The cylinder stroke rises straight when operated by 13, but when operated by the hand running switch 15,
The actuator 32 is configured so as to stop rising at the position where the set value is set and stop the actuator 32 in order to maintain the state.

Since the present embodiment is configured as described above, in the field where the harvesting work by the combine 1 has been completed, the operator does not perform the manual handling work for manually threshing the uncut uncut grain culms. The machine 3 is stopped in a state where the automatic threshing device 6 is operated in the vicinity of the cut stalks being planted, and the continuously variable transmission lever 13 is moved to the forward range F in the neutral position N.
Set to the side (or the reverse range R side) and move away from the driver's seat 10 (S1). Then, the front end portion 15a of the feed chain rail 15 is pushed up and fixed to the front end of the frame 14 via the stopper 17. Then, the hand-handling mode changeover switch 16 is pressed by the front end portion 15a and held in the on-operation state (S2). As a result, the mode of the steering operation performed in the driver's seat 10 can be switched to the operation switch system 19 side. In this state, the operator cuts and collects the uncut grain culm around the machine body 3, and further sequentially inserts the grain culm from the opening 6b of the automatic threshing device 6 to perform the threshing work, and the uncut grain culm around the machine body disappears. Alternatively, when the straw is excessively swollen below the straw outlet 18, the operator interrupts the manual handling work, and the manual handling switch 1 of the operation switch system 19 is stopped.
9a is operated (S3). Then, the signal sent from the switch 19a is input to the setting means 33 (S4), and thereby the setting means 33 outputs the setting signal for causing the airframe 3 to travel at the set low speed to the comparing means 35. . Then, a signal is output from the comparison means 35 to the solenoid valve 39 based on the setting signal, the valve 39 is operated, and the hydraulic actuator 32 is operated. As a result, the expansion and contraction of the piston rod 36 is controlled by the potentiometer 3
When the detection value is detected by 7 and is input to the comparison unit 35, the setting signal and the detection value are compared by the comparison unit 35 (S5). When the detected value is larger than the set value of the set signal, the hydraulic actuator 32 is contracted and decelerated so as to approach the set speed (S6), and when the detected value is smaller than the set value of the set signal, the actuator 32 is set.
Is extended and accelerated to approach the set speed (S
7). Further, when the detected value and the set value are equal, the actuator 32 is immediately stopped and its speed is maintained. Therefore, the combine 1 travels at the set low speed, and when the operator reaches the next work position, the combine 1 is stopped by turning off the hand operation traveling switch 19a, and the hand operation is restarted at that position. To be done. Then, when the manual handling work is completed, the operator removes the stopper 17, and the front end portion 1 of the feed chain rail 15 is removed.
5a is rotated downward, and the manual handling mode switch 16 is cut off. As a result, the steering operation mode is returned to the driver seat 10 side again. Note that, while traveling at the set speed of the combine, the direction of the machine body 3 can be corrected by operating the leftward correction switch 19b and the rightward correction switch 19c arranged in the operation switch system 19.

Further, in this embodiment, by pushing up the front end portion 15a of the feed chain rail 15, the hand operation mode changeover switch 16 is turned on, and the combine switch 1 is operated by the operation switch system 19 provided on the front side portion of the automatic threshing device 6. Although it was configured to be operated from outside the driver's seat 10, FIG. 4 (a),
As shown in (b), the couplers 43 and 45 are installed on one side of the operation panel 11 and at a position different from the driver's seat 10 on the machine body 3, and the couplers 43 and 45 can be inserted and mounted. The operation switch system 44 is usually attached to the coupler 43 on the operation panel 11 side,
The terminal 46 is inserted into the connector 47 and connected to the microcomputer 21, and when the manual operation is performed, the terminal 46 is detached from the coupler 43 and inserted into and attached to the coupler 45. Hand operation mode switch 4
9 is turned on, the terminal 51 is inserted into the connector 50 and connected to the microcomputer 21, and the operation switch system 4
4 may be operated to operate the machine body 3 from outside the machine body 3 by operating the manual traveling switch 52 and the direction correction switch 53. At this time, when the operation switch system 44 is attached to the operation panel 11, the continuously variable transmission 31 normally operates, and when it is attached to the coupler 45 outside the operation panel 11, the continuously variable transmission 31 operates. It is configured to be operated at a set speed based on the control of the microcomputer 21.

Further, as shown in FIGS. 5 (a), (b) and FIG. 6, the operation switch system 56 connected to the microcomputer 21 side by the curl cord 55 is usually provided on the operation panel 11 through the insertion opening 1
It is inserted and stored in the la 1a and the operator operates the operation switch system 56 from the insertion port 11a when carrying out a manual operation or the like.
It is set on a bracket 59 provided on one side of the raising case 57 of the pretreatment unit 7, and the hand-operated traveling switch 60 and the direction correction switch 61 of the operation switch system 56 are set from outside the machine body 3.
May be operated to cause the machine body 3 to travel at a set speed, and the machine body 3 may be appropriately corrected in direction. At this time, the mode may be switched to the operation switch system 56 side in association with the operation of pulling out the operation switch system 56 from the insertion port 11a. It may be performed by a mode changeover switch provided. Further, a bracket 59 for setting the operation switch system 56 on the hand side is provided in front of one side of the automatic threshing device 6 to set the operation switch system 56, as shown by a dashed line in FIG. It may be configured to.

(G) Effect of the Invention As described above, according to the present invention, the traveling operation means 1
9 and the work mode changeover switch 16 are installed on the machine body 3, and the operation by the traveling operation means 19 is activated only when the changeover switch 16 is turned on. In order to operate it, the work mode changeover switch 16 must be turned on without fail, so it is possible to reliably prevent malfunctions such as a risk of personal injury due to the vehicle 1 starting against the operator's will due to an erroneous operation of the operating means 19. As a result, the traveling control device with high safety can be obtained.

Further, when the work mode changeover switch 16 is configured to be turned on by raising the feed chain rail 15, it is possible to reliably prevent the work mode changeover switch 16 from being forgotten to switch during manual handling work, and to perform a traveling operation. Means 19
The operation of the machine can be performed smoothly.

Further, the traveling operation means is an operation panel 11 of the driver's seat 10 and the respective couplers 4 provided outside the operation panel 11.
A traveling operation means 4 configured to be attachable / detachable to / from 3, 45
4 and the work mode changeover switch is a work mode changeover switch 49 which is turned on when the operating means 44 is attached to the coupler 45 outside the operation panel 11.
The traveling performed in the driver's seat 10 by one traveling operation means 44,
By providing both functions of a switch for reaping work and a switch operated from the outside of the machine body 3 for manual handling work, the economy can be improved and the traveling operation means 44 is used except when necessary. By mounting it on the coupler 43 of the operation panel 11, erroneous operation of the operation means 44 from the outside of the machine can be reliably prevented.

Further, when the traveling operation means is connected to the operation panel 11 of the driver's seat 10 with the long cord 55 to form the traveling operation means 56 which can be moved to the outside of the operation panel 11, the bracket 59 for setting the operation means 56 is provided. The traveling operation means 56 brought from the operation panel 11 can be set at a desired position of the operator simply by installing the traveling operation means 19 at an arbitrary position of the machine body 3, whereby the traveling operation means 19 at the time of manual handling work or the like can be set. The operation of can be made easier.

[Brief description of drawings]

FIG. 1 (a) is an overall side view showing a combine equipped with a travel control device according to the present invention, FIG. 1 (b) is a side view showing its hand-holding mode changeover switch, and FIG. 2 is its system configuration. Fig. 3 and Fig. 3 are flow charts showing the operation, and Fig. 4
The figure is a side view showing the operation switch system configured so that one coupler can be attached to and removed from the other coupler. (A) is the coupler on the operation panel side, (b) is the side view showing the coupler outside the driver's seat It is a figure. FIG. 5 (a) is a side view showing another embodiment in which the operation panel and the operation switch system are connected by a long cord, and FIG. 5 (b) shows the operation switch system raised and set in a case. FIG. FIG. 6 is a plan view of the set state viewed from above the combine. 1 …… Work vehicle (combine), 3 …… Aircraft, 13 ……
Stepless speed change lever, 16 ... Working mode changeover switch (hand operation mode changeover switch), 19 ... Traveling operation means (operation switch system), 31 ... Continuously variable transmission, 32 ...
Actuator (hydraulic actuator), 37 ... Gear shift position detecting means (potentiometer).

Front page continuation (72) Inventor Hisawa Aoto 667 Isuya-cho, Hijizumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A continuously variable transmission lever installed in a driver's seat, a continuously variable transmission, and an actuator for operating the continuously variable transmission corresponding to an operating position of the continuously variable transmission lever. A work vehicle comprising: a traveling operation means capable of operating the actuator at a place other than the driver's seat; and a work mode changeover switch for changing to a state in which the actuator can be operated by the traveling operation means. A travel control device for a characteristic work vehicle. 2. The traveling control device for a working vehicle according to claim 1, wherein the work mode changeover switch is a switch that operates by raising a feed chain rail. 3. The traveling operation means is configured to be attachable / detachable to / from an operation panel of a driver's seat and respective couplers provided outside the operation panel, and the work mode changeover switch includes the traveling operation means. The traveling control device for a working vehicle according to claim 1, which is a switch that operates when the switch is attached to the coupler outside the operation panel. 4. The travel according to claim 1, wherein the travel operation means is connected to the operation panel of the driver's seat by a long cord and is configured to be movable to the outside of the operation panel. Control device.