JPH0450934Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a chemical spraying vehicle that is used for spraying chemical solutions onto crops while traveling through the furrows of fields using radio control.

Conventional technology In places where large pest control machines can be used, such as in orchards, unmanned pest control methods are carried out by radio-controlled chemical spray vehicles equipped with chemical tanks. Currently, this is still done manually. This kind of manual spraying is dangerous because the chemical solution may adhere to the worker or the worker may inhale the sprayed chemical solution.
In addition, spraying while handling a heavy hose filled with chemical solution is cumbersome, reduces work efficiency, and is tiring.

Purpose of the Invention In order to address these circumstances, the present invention provides a chemical solution that is small and maneuverable enough to be used in the furrows of a field, and that can be remotely controlled by a worker using a wireless transmitter. The purpose is to provide a scattering vehicle at a low cost.

Structure of the Invention The present invention provides a self-propelled vehicle equipped with an obstacle (including a detecting obstacle such as a stake indicating the boundary of a chemical spray area) detection unit at the front of the vehicle in the forward direction of the vehicle. It has a hose winding unit that winds up a hose connected to a chemical liquid pressure feeding device, and a chemical liquid spraying unit that has a spray nozzle installed in a duct equipped with an air blower. and a signal from this receiver that allows the self-propelled vehicle to move forward, backward, turn left or right, stop, wind up the hose at the hose winding section, let out the hose, and spray the chemical liquid at the chemical spray section as necessary. The device includes a control unit that controls operations such as changing the direction and starting and stopping spraying, so that an operator can spray the chemical solution at a position away from the chemical spraying vehicle. Hereinafter, a detailed explanation will be given based on examples.

FIG. 1 shows the appearance of an embodiment of a chemical spraying vehicle according to the present invention, and its configuration includes a bumper 2 that also serves as an obstacle detection section on the front of a chassis 10 having a caterpillar 1; Near the center, there is a chemical spray part 3.
However, at the rear of the chassis 10, a hose winding section 5 is installed.
An antenna 6a for a radio receiver 6 is provided through the bonnet cover 4.

As shown in FIG. 2, the bumper 2 is supported by support arms 2a attached to the vehicle body through a buffer member (not shown), so that when the bumper 2 comes into contact with an obstacle, the bumper 2 is A pressure-sensitive switch 2 is installed along the longitudinal direction of the front surface of the switch to absorb the shock.
b detects contact with the obstacle, stops power transmission to the caterpillar 1 side, and lights 2c
flashes to warn the operator. The pressure-sensitive switch 2b consists of a pressurized conductive rubber band 2c, such as silicone rubber with fine metal particles dispersed therein, sandwiched from both sides by conductors 2d serving as switch terminals in a sandwich-like manner, and an elastic body 2e made of rubber or the like.
The bumper 2 is a band-shaped material covered with a rubber band, and is fitted and bonded into a groove provided along the longitudinal direction of the bumper 2.

As shown in FIG. 3, the chemical spraying section 3 includes a fan engine 3a, a blower fan 3b driven by the engine 3a, and a built-in fan on one side, which is bent into a substantially L shape. The other side has a duct 3d (Fig. 4) forming a spray window 3c with a flattened opening, and is rotatable via bearings 3f, 3f on the rotating shaft 3e of the blower fan passing through the duct. A duct rotating pulley 3 is supported by the duct and is concentric with the rotating shaft 3e and rotatable about the shaft 3e at a portion where the rotating shaft 3e passes through the duct 3d.
g is fixed to the duct 3d. A motor 3h that rotationally drives the pulley 3g serves as an actuator of a radio control operation control section to be described later, and changes the direction of the spray window 3c. A large number of spray nozzles 3j, 3j, . The chemical solution is sprayed in the direction of the spray window opening by riding on the air directed by 3d.

As shown in FIG. 5, the hose winding section 5 includes a winding reel 5 that is rotatably supported at the rear of the trolley 10.
a is driven by a drive wheel 5c consisting of a friction wheel that engages with the periphery of the frame ring 5b on one side of the reel 5a,
The drive pulley 5e is configured to be rotationally driven in the direction in which the chemical solution hose 8 is wound, and is provided to rotate integrally with the rotating shaft 5d of the drive wheel 5c, and the drive pulley 5e is provided to be integrally rotatable with the axle of the caterpillar vehicle. The belt 5g, which is slidably stretched between the output pulley 5f and the output pulley 5f, is pressed by the tension pulley 5h for driving the take-up reel, which is supported by the hydraulic cylinder 7a so as to be able to reciprocate. By tensioning, the chemical solution hose is wound up. 5j is a sprocket connected by a chain 5m to a sprocket 5k which rotates integrally with the take-up reel 5a, and a traverse cam screw shaft 5 forming the axis of the sprocket 5j.
n (see FIG. 1) rotates with the rotation of the take-up reel 5a, the hose guide roller 5p, which engages with the shaft 5n at its upper end, moves left and right along the guide shaft 5r installed astride the vehicle body side. The chemical hose is configured to reciprocate and wind up uniformly on the take-up reel.

Carapita cars as self-propelled vehicles have engine 1.
The output of a is transmitted via a belt 1e slidably stretched between an engine pulley 1d and a reduction pulley 1d of a transmission 1c, and is transmitted by a clutch hydraulic cylinder 7b. The engine output is transmitted to the transmission 1c by tensioning the belt 1e by a tension pulley 1f which faces the belt 1e so as to be able to reciprocate. 1g is a left/right switching lever, 1h is a forward/backward switching lever,
Switching operations are possible using manual and hydraulic cylinders 7c and 7d, respectively.

The above-mentioned hydraulic cylinders 7a to 7d, motor 3h, starting and stopping of chemical liquid spraying, etc. are remotely controlled by a wireless transmitter/receiver and a control unit as shown in FIG.

The multi-channel receiver 9 has a spray window start and stop button 9a, a vehicle stop button 9b, a forward/backward button 9c, a left/right turn button 9d, a spray window, and a left/right rotation button 9e, each button being pressed. In this way, low frequency signals of different frequencies are sent to the receiver 6 on the transmission wave. The receiver 6 selects each signal detected and extracted by the receiving circuit 6b using a reed selector 6d, etc., and selects a solenoid valve for switching a hydraulic circuit, a motor, a solenoid valve for opening/closing a chemical liquid flow path, etc. An actuator drive circuit 6e consisting of individual relay circuits for operating the actuators is activated, and a drive current is sent to each actuator.

FIG. 6 shows an example of a control section, in which electromagnetic directional control valves 11, 12, and 13 are provided in the hydraulic circuit of a hydraulic device 14 provided on the chassis, thereby controlling the clutch cylinders 7b, The cylinder 7c for left and right turns and the cylinder 7d for forward and backward movement are respectively operated. In the hydraulic cylinder 7a for driving the take-up reel, when the reverse button is pressed, the spring offset type switching valve 13 is energized, the gear of the transmission is switched to reverse, and the hydraulic cylinder 7a drives the take-up reel. and start winding the hose. Of course,
When the vehicle is moving forward, the take-up reel is able to freely rotate, and the hose is paid out as the vehicle moves forward. The electromagnetic directional switching valve 12 that operates the left/right turning cylinder 7c is a spring center type switching valve.
When the lever 1g is in the neutral position without being electrically biased, the lever 1g connected to the left/right turning cylinder is in the straight forward position. The motor 3h for rotating the spray window rotates to the left or right only while the left button 9e or the right button 9e is pressed, and by releasing the button at a desired angle, the spray window can be rotated at that position. The window stops. The spraying is started by energizing the normally closed solenoid valve 15 using the button 9a, and the spraying is stopped by releasing the self-holding of this energizing circuit. Further, the hydraulic cylinder 7b for the clutch reciprocates in synchronization with the left/right turn, forward, and reverse operation buttons, thereby intermittent engine output. When the pressure sensitive switch 2b is turned on or the stop button 9b is pressed, the solenoid valve 11 is energized, the pressure on the clutch pulley 1f is released, and the memory circuit is activated to maintain this state and spray the chemical solution. A car is configured to stop.

In the above embodiment, the spray window is rotatable in the left and right directions in the traveling direction of the self-propelled vehicle, but it may be fixed in one direction.
Also, instead of the pressure-sensitive rubber switch of the obstacle detection section, a limit switch or the like may be used that faces a suitable position in the moving range of the bumper. Furthermore, it goes without saying that the clutch for the engine of the self-propelled vehicle may be of the disk clutch type.

Effects The chemical liquid spraying vehicle of the present application is installed at an appropriate location in the field using a chemical liquid pressure feeding device 20 (sixth unit) consisting of a chemical liquid tank and a pump.
(Fig.), connect the hose of the hose winding section to this, start the engine, and then use the transmitter 9 to move forward while letting out the hose between the furrows and spray the chemical solution on one side. Next, when it reaches the edge of the field, the bumper comes into contact with a pillow, etc. that has been placed at that location, which activates the pressure-sensitive switch, causing the sprayer to stop automatically and the lamp 2c to flash. do. Next, by reversing the direction of the spray window to the other side and pressing the retreat button 9c, the hose is moved backward while winding up the same furrow, and the other side of the furrow is sprayed. In this way, the same operation is repeated by moving from one ridge to the next ridge. Thus,
Workers can carry out pest control work efficiently without the risk of inhaling pesticides or getting them on their skin.
In addition, if it is made into a caterpillar vehicle as in the embodiment, it can be driven on uneven surfaces or slopes, and even if it falls over, it will not pose any danger to the operator. Also, there is no need to handle heavy hoses, so
It has advantages such as extremely low fatigue, is cheaper than conventional unmanned spraying vehicles, and can spray freely even in small fields. By configuring the direction of the spray window to be changeable as in the embodiment, the chemical liquid can be sprayed in a concentrated manner in the desired direction, resulting in greater effectiveness and less waste of the chemical liquid.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is a sectional view showing the obstacle detection section of the embodiment shown in FIG. FIG. 3 is an explanatory diagram showing the arrangement of main components of the embodiment of the present application. FIG. 4 is an explanatory diagram showing the structure of the chemical liquid spraying section of the embodiment of the present application.
FIG. 5 is an explanatory diagram showing the power transmission mechanism of the embodiment of the present application. FIG. 6 is an explanatory diagram showing a remote control wireless transceiver and a control section according to an embodiment of the present application. FIG. 7 is an explanatory diagram showing an example of a transceiver.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A self-propelled vehicle equipped with an obstacle detection unit at the front, a hose winding unit, and a chemical spraying unit comprising a spray nozzle in a duct equipped with an air blower. a receiver for receiving signals from a wireless transmitter for remote control; and a control unit for controlling operations of the self-propelled vehicle, the hose winding section, and the chemical spraying section based on the signals from the receiver. A chemical liquid spraying vehicle characterized by being equipped with. (2) The obstacle detection unit consists of a detection switch provided on a bumper that retreats to the rear of the vehicle when it comes into contact with an obstacle, or in a moving area of the bumper, and a lamp that lights up when the detection switch is turned on;
The chemical liquid according to claim 1, wherein the control unit is a solenoid valve for switching the operation of the self-propelled vehicle, the hose winding part, and the chemical liquid spraying part, and a hydraulic cylinder operated by switching the hydraulic flow path of the solenoid valve. Spraying vehicle. (3) The tension pulley supported by the clutch hydraulic cylinder faces the belt that is slidably stretched between the engine output pulley and the reduction gear pulley of the self-propelled vehicle, so that the engine output can be turned on and off. A chemical solution spraying vehicle according to claim 1 or 2, which is configured to perform the following operations. (4) The hose winding section has a winding reel that is rotatably supported at the rear of the vehicle, and an output pulley that extracts rotational force from the self-propelled vehicle, and the winding reel is rotationally driven through a drive wheel. The tension pulley for driving the take-up reel, which is supported by a hydraulic cylinder so as to be able to reciprocate, faces the belt that is slidably stretched between the drive pulley and the drive pulley. 4. A chemical liquid spraying vehicle according to claim 1, wherein the chemical solution dispersing vehicle is configured to switch between rotating rotations. (5) The chemical solution dispersing vehicle according to any one of claims 1 to 4, wherein the duct provided with the blower is rotatably provided.