JPH0650406U - Automatic storage device for direction sensor in work vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] It is not necessary to bother to store the direction sensor when moving backwards, improving operability, and forgetting to store the direction sensor may damage the direction sensor.
It surely eliminates the inconvenience of pushing down crops. [Structure] The direction sensor 5 is automatically stored based on the detection of a reverse shift detection switch 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic storage device for a direction sensor in a work vehicle such as a passenger management machine.

[0002]

[Problems to be Solved by Prior Art and Invention]

 Recently, it has been proposed that this type of work vehicle be provided with a direction sensor for detecting the traveling direction of the machine body and perform automatic control such as straight-ahead automatic control based on the detection of the direction sensor. However, if the direction sensor is configured to detect the traveling direction of the aircraft by contacting the rows of crops already planted, the direction sensor may touch the ridges or the like when the aircraft moves backward and damage the crop. There is a fear of pushing it down. Therefore, it is conceivable to configure the direction sensor so that it can be moved up and down between the detection posture and the retracted posture based on the switch operation.In this case, it is necessary to perform the switch operation each time the aircraft is moved backward. In reality, it is not possible to reduce the operability, and there is still the possibility of forgetting the switch operation and damaging the directional sensor or pushing down the crops.

[0003]

[Means for Solving the Problems]

 The present invention was devised in view of the above circumstances to provide an automatic storage device for a direction sensor in a work vehicle that can eliminate these drawbacks. A work vehicle equipped with a directional sensor that touches the rows and detects the traveling direction of the aircraft so that it can be moved up and down freely between a detection posture located near the field scene and a stored posture located at the bottom of the aircraft. The work vehicle is provided with a reverse shift detecting means for detecting a reverse shift operation of the traveling shift operating mechanism, and an automatic storing means for automatically storing a direction sensor based on the reverse shift detection of the means. It is characterized by. With this configuration, the present invention makes it possible to improve the operability by eliminating the need to carry out the storing operation of the direction sensor when moving backward, and to forget the storing operation of the direction sensor and damage the direction sensor. However, the inconvenience of pushing down crops is surely eliminated.

[0004]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of a passenger management machine. The traveling machine body 1 is a sprayer (boom sprayer) for spraying liquid on the rear part of the traveling machine body 1 for carrying out control work in a field where crops have already been planted. ) 2 are connected via a lifting link mechanism 3, but each of the steering mechanism, clutch mechanism, brake mechanism, slot mechanism, traveling speed change mechanism, etc. provided on the traveling machine body 1 operates on behalf of the operator. There is an unmanned operating mechanism for performing operations.

Reference numeral 4 denotes a pair of left and right sensor arms provided in the front part of the machine body. The sensor arms 4 project from the front end part of the machine body in a slanted shape so as to be positioned between the planted crop rows. A detection bar protruding toward the inner side and a change in the angle of the detection bar (a swinging angle due to contact with the crop) are detected at the protruding tip of the control unit 6 which will be described later. The sensor arm 4 is provided with a direction sensor 5 composed of an analog angle sensor for inputting to the sensor. An electric cylinder 7 is linked to move and move up and down to a retracted posture along the bottom of the traveling body 1. The electric cylinder 7 is of a so-called limiter type, which expands and contracts based on forward and reverse driving of the electric motor and automatically stops at upper and lower limit positions based on detection of each limit switch.

The control unit 6 is configured by using a so-called micro computer (including CPU, ROM, RAM, etc.), which is remotely operated from the direction sensor 5 and the transmitter 8. A receiver 9 for receiving a signal, a straight-ahead automatic switch 10 for turning ON / OFF the straight-ahead automatic control, a sensor elevating switch 11 for elevating and lowering the direction sensor 5, and a backward operation of the traveling speed change lever 12 are provided. The reverse shift detection is made by inputting a signal from the switch 13 or the like, and an operation signal is output to the unmanned operation mechanism or the electric cylinder 7 based on a determination based on these input signals. That is, the control unit 6 compares the signal input control that controls the input of various signals, the remote operation control that controls each unmanned operation mechanism based on the remote operation signal from the transmitter 8, and the detection values of the left and right sensor 5. However, various controls such as straight-ahead automatic control that controls the unmanned operation mechanism of the steering mechanism to match both detection values, sensor up-and-down control that controls the elevation of the direction sensor 5, and signal output control that controls the output of various signals are performed. Among these controls, the sensor ascending / descending control, which is the gist of the present invention, will be described below based on the flow chart.

In the sensor raising / lowering control, it is determined whether or not the sensor raising / lowering switch 11 has been lowered or raised, and when it is determined that the sensor raising / lowering switch 11 has been lowered, the electric cylinder 7 When the sensor elevating switch 11 is determined to have been operated to ascend while the direction sensor 5 is lowered to the detection posture near the field surface based on the extension operation of the electric sensor 7, the direction sensor 5 is reduced based on the contraction operation of the electric cylinder 7. In the sensor ascending / descending control of the present invention, the reverse operation of the traveling variable speed operation lever 12 is constantly monitored based on the detection of the reverse speed change detection switch 13. ing. When it is determined that the traveling gear shift operation lever 12 has been operated in reverse, the execution of the straight-ahead automatic control is prohibited, and the direction sensor 5 is automatically moved to the retracted posture along the bottom of the machine body based on the reduction operation of the electric cylinder 7. It has become possible to raise it.

In the embodiment of the present invention configured as described above, the left and right direction sensors 5 contact the planted crops in the vicinity of the field surface to detect the traveling direction of the airframe. When the shift operation lever 12 is operated in the reverse direction, the electric cylinder 7 is automatically reduced based on the detection of the reverse shift detection switch 13, and the direction sensor 5 is retracted along the bottom of the machine body along with the reduction operation. Will rise to. Therefore, the directional sensor 5 is automatically stored without moving the special sensor lift switch 11 when the vehicle is moving backward, and as a result, the switch operation is reduced and the operability is significantly improved. You can

Moreover, since the operator does not forget to operate the sensor up / down switch 11 to move the vehicle backward while the direction sensor 5 is being lowered, the inconvenience of damaging the direction sensor 5 or pushing down the crop as in the conventional case is surely ensured. It can be resolved.

Further, in the above-described embodiment, since the execution of the straight-ahead automatic control is prohibited based on the backward operation of the traveling speed change operation lever 12, the inconvenience that the steering mechanism is unnecessarily operated during the reverse operation is eliminated. can do.

[0011]

[Operation effect]

 In short, since the present invention is configured as described above, the direction sensor that detects the traveling direction of the machine is changed up and down between the detection attitude located near the field scene and the storage attitude located at the bottom of the machine. Although provided freely, the direction sensor is automatically stored in the bottom of the machine body based on the backward shift operation of the traveling shift operation mechanism. Therefore, there is no need to perform a special switch operation when moving the aircraft backward, as in the case of raising and lowering the direction sensor based on the switch operation, and forgetting the switch operation and moving the aircraft backward with the direction sensor lowered. As a result, it is possible to reduce the switch operation and improve the operability.As a result, the direction sensor that was forgotten to be stored may push down the crop or damage the direction sensor itself. It is possible to eliminate all the imperfections.

[Brief description of drawings]

FIG. 1 is a side view of a traveling body.

FIG. 2 is a block circuit diagram showing an outline of a control mechanism.

FIG. 3 is a flowchart showing a main routine.

FIG. 4 is a flow chart showing sensor elevation control.

[Explanation of symbols]

 1 traveling machine body 4 sensor arm 5 direction sensor 6 control unit 7 electric cylinder 12 traveling speed change lever 13 reverse speed change detection switch

Claims (1)

[Scope of utility model registration request] 1. A direction sensor for detecting the traveling direction of an aircraft by contacting a row of crops already planted can be freely moved up and down depending on a detection posture located near a field scene and a storage posture located at the bottom of the aircraft. A work traveling vehicle provided, wherein the work traveling vehicle includes a reverse shift detecting means for detecting a reverse shift operation of a traveling shift operating mechanism, and a direction sensor automatically stored based on the reverse shift detection of the means. An automatic storage device for a direction sensor in a work vehicle, characterized in that the automatic storage means is provided.