JP3637620B2 - Passenger control machine - Google Patents

Description

[0001]
[Industrial application fields]
In this invention, a spray boom having a spray nozzle on a tractor vehicle body is deployed to the side of the vehicle body to be in a spraying work posture, or is stored in the vehicle body side upward to be switched to a non-working posture. The present invention relates to a passenger control machine that easily switches such spray booms in conjunction with the steering angle of a steering wheel of a passenger car body.
[0002]
[Background Art and Problems to be Solved by the Invention]
At the time of steering turning such as dredging, in addition to the steering handle operation, the spray valve must be closed to store the spray boom, and the reverse operation must be performed upon completion of steering turning. The operation is troublesome.
[0003]
[Means for Solving the Problems]
The present invention is a riding control machine in which spray booms 3 and 3 are configured to be able to be moved in and out by electric cylinders 21 and 21 on both the left and right sides of a passenger car body, and steering for detecting steering angles of front wheels 6 and rear wheels 7. Sensors 23, 23 are provided, and the left and right spray booms 3, 3 are independently provided with electromagnetic spray valves 4, 4. When the steering detection angle by the steering sensors 23, 23 increases, Interlocking control is performed so that the spray boom 3 is deployed as it is, and the spray valve 4 is kept open so that only the spray boom 3 on the outside of the turn is raised and retracted and the spray valve 4 on the retracting side is closed. It is set as the structure of the riding control machine characterized by providing the spray boom control apparatus 5 which performs.
[0004]
[Operation and effect of the invention]
When the vehicle is traveling straight by operating the steering handle 1, the spray boom 3 is projected horizontally in the lateral direction, and the spray solution 4 is sent to the spray boom 3 by opening the spray valve 4. It sprays from each nozzle of the spray boom 3. When the steering turn is performed after reaching the edge of the field, the steering turn is performed by the steering handle 1, and the spray boom control device 5 stores and deploys the spray boom 3. Done. That is, when the steering angle increases, the spray boom 3 outside the turning is gradually stored, and the spray valve 4 for feeding the liquid to the spray boom 3 is closed. On the inside of the turning, the spray boom 3 is deployed horizontally, and the spray valve 4 is kept open . Further, in the latter half of the steering turning, when the steering angle is decreased, the spray boom 3 on the outside of the turning is gradually developed, the spray valve 4 is opened, and the chemical spray is performed.
[0005]
Thus, the storage and deployment of the spray boom 3 outside the turning and the opening and closing of the spray valve 4 of the spray boom 3 are electrically controlled in conjunction with the steering turning by the steering handle 1. Therefore, the steering operability can be improved.
[0006]
【Example】
The tractor has four WDs that can drive the front wheels 6 and the rear wheels 7, and the steering mode is four WSs that steer the front wheels 6 and the rear wheels 7 in the opposite directions. Then, the FWS that steers only the front wheel 6 and the RWS that steers only the rear wheel 7 can be selected and set by the pushbutton switches 8, 9, and 10. The operation panel 11 has an automatic switch 12 in addition to the switches 8, 9, and 10. The operation of the spray boom control device 5 is automatically performed by detecting the steering angle of the steering handle 1. The ON operation is performed when it is performed. Reference numeral 13 is a cockpit, 14 is a bonnet that covers the engine, 15 is a front hitch to which the spray boom 3 is mounted, 16 is a rear hitch, 17 is a front axle housing, and 18 is a rear axle housing.
[0007]
A mounting frame 19 is attached to the front hitch 15 of the vehicle body 2. The mounting frame 19 is pivotally supported by a spray boom 3 that swings up and down in a posture that horizontally expands outward on both the left and right sides and a posture that stands up and retracts upward. The spray boom 3 is raised and lowered by the expansion and contraction of the electric cylinder 21 with respect to the mounting frame 19. A boom angle sensor 22 detects the angle of the spray boom 3 and is composed of a potentiometer.
[0008]
The left and right spray booms 3 are constituted by pipes through which a chemical solution flows, and nozzles capable of spraying downward are arranged along the pipes. A pump, a liquid tank, and the like for feeding the spray boom 3 are attached to the rear portion of the vehicle body 2. The spray valve 4 is electromagnetically opened and closed, and is provided in the middle of the liquid feed circuit extending from the pump to the spray boom 3, and can be opened and closed separately for each of the left and right spray booms 3. It is said.
[0009]
A steering sensor 23 composed of a potentiometer for detecting the steering angle of the front wheel 6 or the rear wheel 7 by the steering handle 1 is provided at one side end of the axle housings 17 and 18. Reference numeral 24 denotes a final case, which has a steering case 26 that has wheels 6 and 7 that pivot about the kingpin shaft 25 at its lower end, and is integrated with the steering case 26. A steering arm 27 is interlocked by steering cylinders 28 and 29 that are expanded and contracted by hydraulic pressure. The actuator 30 of the steering sensor 23 is engaged so as to rotate integrally with the steering arm 27, and the angle of the steering arm 27 can be detected by the steering sensor 23.
[0010]
The spray boom control device 5 is input to the controller CPU having a microcomputer while detecting the steering angle of the wheels 6 and 7 when the steering is turned by the operation of the steering handle 1 by the steering sensor 23. The left and right transmission cylinders 21 and the spray valve 4 are output-controlled. On the input side of this controller CPU, in addition to the steering sensor 23, there are a four WS switch 8 and left and right boom angle sensors 22 (left 2L, right 22R). The electric cylinder 21 on the output side of the controller CPU includes a pair of left and right electric cylinders 21L and 21R, and the spray valve 4 includes a pair of left and right electromagnetic spray valves 4L and 4R.
[0011]
The action at the time of steering is performed according to the flow chart as shown in FIG. At this time, according to the left and right steering turning, for example, the left spray boom 3 in FIG. 6 is in the spray position of the spray boom 3 inside the left turn, and the spray valve 4L is also opened. The spraying action is performed, and only the outer spray boom 3R is accommodated upward.
[0012]
The relationship between the steering angle θ of the wheels 6 and 7 and the boom folding angle α by the boom angle sensors 22L and 22R can be expressed by a function of the steering folding angle θ (FIG. 8). Is stored in the controller CPU, the boom folding angle α and the opening and closing of the spray valve 4 can be controlled by the steering angle θ of the steering handle 1.
[Brief description of the drawings]
FIG. 1 is a front view of a spray boom mounting portion.
FIG. 2 is a block diagram of a spray boom control device.
FIG. 3 is a plan view of a steering sensor unit.
FIG. 4 is a plan view of an operation panel unit.
FIG. 5 is a plan view of the tractor.
FIG. 6 is a plan view showing an action during steering turning.
FIG. 7 is a control flow chart of the spray boom control device.
FIG. 8 is a graph showing the relationship between the wheel steering angle and the boom folding angle.
[Explanation of symbols]
1 Steering handle 2 Car body 3 Spray boom 4 Spray valve 5 Spray boom control device

Claims (1)

Steering sensors 23 and 23 for detecting the steering angle of the front wheel 6 and the rear wheel 7 in a passenger control machine in which the spray booms 3 and 3 are configured to be movable in and out by electric cylinders 21 and 21 on both the left and right sides of the passenger car body. Further, the left and right spray booms 3 and 3 are provided with electromagnetic spray valves 4 and 4 independently of each other, and when the steering detection angle by the steering sensors 23 and 23 increases, The spray boom control is performed in such a manner that the spray valve 4 is maintained in an open state and the spray valve 4 is kept open, and the spray boom 4 on the outer side of the turn is lifted and retracted and the spray valve 4 on the retracting side is closed. A passenger control machine provided with a device 5 .

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