JP2013179853A - Chemical spraying vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate taking water into a chemical tank, and to facilitate draining a chemical remaining in the chemical tank.SOLUTION: A second pipe (20b) for pest control is provided which supplies air or liquid, sent from a pest control pump (21), into a chemical tank (18). The rear end of the second pipe (20b) for pest control is provided with a connection part (29) which connects a water-intake device (40) for supplying water from an external water source (G) into the chemical tank (18), and a switching valve (28) which switches between supply or non-supply of the air or liquid from the pest control pump (21) to the water-intake device (40). A liquid level gauge (45) is provided which indicates the amount of a chemical in the chemical tank (18). The switching valve (28), the connection part (29), and the liquid level gauge (45) are arranged at a side or back position of the chemical tank (18) so as to be close to each other.

Description

  The present invention relates to a chemical solution spraying vehicle for spraying a chemical solution to a field.

  Patent Document 1 describes an apparatus for taking water for diluting a stock solution of a chemical solution. Patent Document 2 describes a configuration for visually recognizing a liquid level gauge that detects the amount of liquid in a chemical tank from the driver's seat.

JP 2006-239475 A JP 2010-200652 A

  An object of the present invention is to make it easy to take water into a chemical tank. It is another object of the present invention to make it easier to drain the remaining chemical solution in the chemical solution tank.

In order to solve this technical problem, the present invention takes the following technical means.
The invention according to claim 1 is equipped with a chemical solution tank (18) for storing a chemical solution in a vehicle body and a control pump (21) for sucking the chemical solution in the chemical solution tank (18) from the first control pipe (20a). The tank (18) is provided with a second control pipe (20b) for supplying air or liquid sent from the control pump (21), and an external water source is provided at the rear end of the second control pipe (20b). (G) Supplying water or water from the control pump (21) to the connecting device (29) for connecting the water intake device (40) for supplying water into the chemical liquid tank (18), and supplying the water or the liquid to the water device (40) A switching valve (28) for switching whether to supply or not is provided, a liquid level gauge (45) indicating the amount of the chemical liquid in the chemical liquid tank (18) is provided, and the switching valve (28), the connecting portion (29), and the liquid The face meter (45) is placed on the side or back of the chemical tank (18). And chemical spraying vehicle, characterized in that provided at a position close to have.

In the invention according to claim 2, the chemical tank (18) is configured in the left-right direction from the center in the left-right direction of the vehicle body in a rear view, and the first opening (18c) is formed on the bottom surface of the chemical tank (18). A first pipe for control (20a) is detachably attached to the first opening (18c), and a second opening (18d) is formed on the bottom surface of the chemical tank (18) to open and close the drain cover (27). Is detachably attached to the second opening (18d),
The chemical solution spraying vehicle according to claim 1, wherein the first opening (18c) and the second opening (18d) are respectively formed on the left and right sides of the chemical solution tank (18) from the left and right center positions in a rear view. To do.

According to the first aspect of the present invention, the operator can take in water while visually checking the liquid level gauge, so that it is easy to take in water.
According to the second aspect of the present invention, the chemical liquid remaining in the chemical liquid tank can be smoothly drained even when the vehicle body is tilted to either the left or right.

Rear view of chemical spray vehicle Right side view of chemical spray vehicle Top view of chemical spray vehicle Front view of chemical spray vehicle Diagram showing chemical spraying work as seen from the front Operation panel Diagram showing the route of chemicals Front view of chemical tank Top view of chemical tank Right side view of chemical tank Rear view of chemical tank

A work vehicle according to an embodiment of the present invention will be described below. In the present embodiment, the traveling direction side of the traveling vehicle is referred to as the front side.
A front wheel 1 and a rear wheel 2 are provided, a bonnet 3 is provided at the front of the traveling vehicle body, and the engine 9 is covered. A steering handle 4 is provided behind the bonnet 3, and a driver seat 5 is provided behind the steering handle 4. The driver's seat 5 is provided above the step floor 6, and a fuel tank 7 and a step 8 for getting on and off are provided between the front wheel 1 and the rear wheel 2.

  A resin chemical tank 18 for storing a chemical solution is mounted behind the driver seat 5, a boom 10 for spraying the chemical solution is provided in front of the bonnet 3, and the boom 10 is attached to the lifting link attachment body 11. The lifting link attachment body 11 is connected to the pair of left and right lifting links 12 so that it can be lifted and lowered together with the lifting link 12. The lifting link 12 and the boom attachment body 11 are lifted and lowered at the center of the left and right of the traveling vehicle body. This is performed by the expansion and contraction operation of the cylinder 13. By attaching one end of the elevating cylinder 13 to a connecting shaft 14 that connects the left and right elevating links 12, when the elevating cylinder 13 expands and contracts, the connecting shaft 14 and the elevating link 12 are fixed to the main body vehicle side on the bonnet 3 side. It is the structure which goes up and down by using as a fulcrum.

  The posture of the boom 10 shown in FIGS. 1 to 3 indicates a non-sprayed storage posture, and the boom 10 is received by the boom receivers 15 provided on the left and right sides of the traveling vehicle body so as to be inclined obliquely upward. FIG. 5 shows a state in which the boom 10 is extended horizontally on the left and right sides of the traveling vehicle, and sprayed chemicals from a number of nozzles 16 (the nozzle 16a of the left boom 10a, the nozzle 16b of the right boom 10b, and the nozzle 16c of the central boom 10c). The chemical solution spraying state is shown. Boom spraying and storage switching cylinders 17 (the left boom cylinder 17a and the right boom cylinder 17b) are provided for individually extending the left and right booms 10 to the left and right sides and setting them to the storage positions.

The path | route of chemical | medical solution dispersion | distribution and a power transmission mechanism are demonstrated based on FIG.
A control pump 21 for supplying the chemical solution in the chemical solution tank 18 to the boom 10 is provided, the chemical solution tank 18 and the input side of the control pump 21 are connected by a first control pipe 20a, and the output side of the control pump and the chemical solution tank 18 are connected to each other. The second pipe 20b for controlling is connected. The first control tube 20a is a tube through which the chemical solution passes when the chemical solution in the chemical solution tank 21 is sucked by the control pump 21, and the second control tube 20b is a chemical solution in the chemical solution tank 18 from the control pump 21. Is a tube through which air or water supplied to the water intake device 40 described later passes.

  The control pump 21 and the boom 10 are connected by a control third pipe 20c. In the middle of the third control pipe 20c, a flow control valve 36 for adjusting the flow rate, and a manual spray cock 22 (selecting whether or not to supply the chemical to each of the left boom 10a, the right boom 10b, and the central boom 10c) A left-boom spray cock 22a, a right-boom spray cock 22b, and a central-boom spray cock 22c are provided.The power of the engine 9 is transmitted from the input shaft 23 through the transmission mechanism 24 to the traveling system output shaft 25 and the control pump output. It is output to the shaft 26.

  One end of the second pipe for control 20b is connected to the lower part of the outer surface of the chemical liquid tank 18, and a connection for connecting the switching valve 28 and a water intake device 40, which will be described later, to the end of the second pipe for control 20b. A portion 29 is provided.

The operation panel 30 will be described with reference to FIG.
The operation panel 30 is provided so as to protrude forward from one side of the driver seat 5, and various operation tools for spraying the chemical solution and operating the boom 10 are provided on the panel surface. A boom operation lever 31 (a left boom operation lever 31a and a right boom operation lever 31b) for operating the left and right movements and the vertical movement of the boom 10 is provided. Further, a left boom posture changing lever 32a for switching the storage posture and the spraying posture of the left boom 10a, similarly a right boom posture changing lever 32b, and a boom posture changing lever 32c for switching the postures of the left boom 10 and the right boom 10 together are provided. . Inside the operation panel 30 is provided a control unit 35 for controlling the spraying amount of the chemical solution, the operation of the boom 10 and the like.

  Further, a spray cock 22 (left boom spray cock 22a, central boom spray cock 22b, and right boom spray cock 22c) for operating whether the chemical solution is sprayed from the boom 10 or stopped is provided. In addition, a display meter 53 for displaying the spray amount and a spray amount setting switch 54 for setting increase / decrease of the spray amount are provided. Further, a pump switch 33 for turning on / off the control pump 21 is provided. Further, an operation panel side elevating lever 34 for extending and retracting the elevating cylinder 13 is provided. The operation panel side elevating lever 34 adjusts the spraying height position of the boom 10 so that the chemical solution can be sprayed according to the height of the crop.

The configuration of the chemical liquid tank 18 will be described.
The chemical liquid tank is configured from the center in the left-right direction of the vehicle body in the left-right direction in the rear view or the front view, and the chemical tank 18 is configured in a substantially bilaterally symmetric shape. The front portion of the chemical liquid tank 18 forms projecting portions 18 a and 18 b that project to the left and right sides of the driver seat 5. On the upper surface of the rear part of the chemical liquid tank 18, an opening / closing lid 19 for supplying water and chemical liquid is provided. A first opening 18c and a second opening 18d are formed on the bottom surface of the rear part of the chemical liquid tank 18, and the first opening 18c and the second opening 18d are respectively left and right from the left and right center position of the chemical liquid tank 18 in a rear view. It is formed on both sides. A third opening 18e is formed in the lower part of the outer surface of the chemical tank 18 on the operation panel side, and one end of the second pipe 20b for control is attached.

  One end of the first control tube 20a is attached to the first opening 18c, and is configured to be detachable. A filter 37 for filtering impurities from the chemical solution is provided in the middle of the first control tube 20a. The second opening 18d is a drain for draining the chemical liquid in the chemical liquid tank 18, and a drain opening / closing lid 27 is provided.

  A first liquid level gauge 44 for detecting the amount of liquid in the chemical liquid tank 18 is provided along the front surface of the protruding portion 18c of the chemical liquid tank 18 on the side opposite to the operation panel 30. The first liquid level gauge 44 has a shape of a pipe extending in the vertical direction, and the liquid level in the chemical liquid tank 18 can be visually recognized by the operator from the outside of the vehicle body as the chemical liquid rises in the pipe to the same water level as the liquid level in the chemical liquid tank 18. it can.

  A second liquid level gauge 45 is provided on one side of the back of the chemical liquid tank 18 on the operation panel 30 side, and the second liquid level gauge 45, the drain opening / closing lid 27, the switching valve 28, and the connecting portion 29 are provided at positions close to each other. ing.

  The water intake device 40 includes a water intake part 41 that contains a turbine that takes water from a water source, a water intake first pipe 42 that is connected to the connection part 29 of the second control pipe 20b, and a water intake part through which water taken from the water intake part 41 passes. A second pipe 43 is used.

  When spraying the chemical, when the engine 9 is driven and the boom posture changing lever 32c is operated to the spray position side, the control unit 35 first extends the lifting cylinder 13 to separate the left and right booms 10 from the boom receiver 15, Next, the boom spraying / accommodating switching cylinder 17 is extended, and the left and right booms 10 are controlled to extend horizontally to the outer side of the traveling vehicle body so as to have a spraying posture. By operating the pump switch 33 to spray the spray cock 22 and moving forward while adjusting the height of the boom 10 with the operation panel side elevating lever 34, the sprayed chemical solution from the nozzle 16 to the crops Is sprayed. When the spraying of the chemical liquid is finished and the boom 10 is returned to the storage position, when the boom posture changing lever 32c is operated to the storage position side, the control unit 35 reverses the order from the control from the storage position to the spraying posture. Then, the boom 10 is controlled to the storage position.

The water intake operation for drawing up the chemical liquid from the water source G by the water intake device 40 in the chemical liquid tank 18 will be described.
The water intake first pipe 42 is connected to the connection part 29, the water intake part 41 is put into the water source G, and the water intake second pipe 43 is inserted into the chemical liquid tank 18 by opening the opening / closing lid 19 of the chemical liquid tank 18. Then, when the control pump 21 is driven and the switching valve 28 is opened, the air of the control pump 21 is supplied to the water intake section 41 through the control second pipe 20 b and the water intake first pipe 42, and the turbine of the water intake section 41. Drive. Then, the water pumped up from the water source G passes through the second water intake pipe 43 and is supplied into the chemical liquid tank 18. When the second liquid level gauge 45 confirms that the amount of water required by the operator is supplied into the chemical liquid tank 18, the switching valve 28 is closed and the water intake operation is terminated. And an operator produces | generates in the chemical | medical solution spread | dispersed in a farm field by throwing the stock solution of chemical | medical solution into the water accommodated in the chemical | medical solution tank 18, and diluting it. At the time of water intake operation, the operator can supply water into the chemical tank 18 while visually checking the second liquid level gauge 45, and can stop the supply of water by closing the switching valve 28.

Another embodiment of the water intake operation will be described.
When some water is stored in the chemical liquid tank 18 in advance and the switching valve 28 is opened to start the water intake operation, the water in the chemical liquid tank 18 is sucked by the control pump 21 through the control first pipe 20a. Then, the water passes from the control pump 21 through the control second pipe 20b, passes through the first water intake pipe 42, is supplied to the water intake section 41, and the turbine starts to drive. Thereafter, the control pump 21 sucks water from the chemical liquid tank 18 and supplies water to the water intake section 41, while pumping water from the water intake section 41 and supplies water to the chemical liquid tank 18. That is, the amount of water in the chemical liquid tank 18 is increased by increasing the amount of water pumped from the intake portion 41 rather than the amount of water supplied from the control pump 21 to the intake portion 41.

Note that the spray cock 22 is closed during the water intake operation.
Next, an operation for draining the chemical solution in the chemical solution tank 18 will be described.
When draining the chemical tank 18, the chemical liquid in the chemical tank 18 is drained from the second opening 18 d by opening the drain opening / closing lid 27. However, when the vehicle body is inclined to the first liquid level gauge 44 side, the chemical liquid is inclined to the first opening side and may not be drained smoothly. In this case, the chemical solution in the chemical solution tank 18 can be smoothly drained by draining the chemical solution from the first opening 18c by removing the first control pipe 20a.

That is, by allowing the chemical liquid to be drained from either the first opening 18c or the second opening 18d, the chemical liquid can be smoothly drained.
Next, features in the present embodiment will be described.

A recess 55 serving as a handle for getting on and off is formed adjacent to the level gauge 44 on the front side of the chemical tank. The operator can get into the driver's seat 5 from step 8 while holding the recess.
As for the arrangement of the chemical liquid tank 18, the chemical liquid tank 18 is arranged so that the center of gravity is located on the front side of the machine body from the rear wheel when the chemical liquid is accommodated in the chemical liquid tank 18 to a substantially full amount. In this state, when the boom 10 is deployed and the chemical liquid tank 18 is sprayed, the front-rear balance of the airframe is substantially the same. Therefore, the vehicle body is unlikely to be in a rearward inclined posture, the steering performance in the wet field is improved, and the spraying accuracy of the chemical liquid from the boom 10 can be improved.

18 Chemical solution tank 18c First opening 18d Second opening 20a Control first pipe 20b Control second pipe 21 Control pump 27 Drain opening / closing lid 28 Switching valve 29 Connecting part 40 Water intake device 45 Liquid level gauge (second liquid Area meter)
G water source

Claims (2)

  A chemical tank that stores chemicals in the vehicle body and a control pump that sucks the chemicals in the chemical tank from the first control pipe are installed, and a second control pipe that supplies air or liquid sent from the control pump into the chemical tank. Provided at the rear end of the second pipe for control is a connecting part for connecting a water intake device for supplying water from an external water source into the chemical solution tank, and supplies air or liquid from the control pump to the water supply device A switching valve that switches whether to supply or not is provided, and a liquid level gauge that indicates the amount of the chemical liquid in the chemical tank is provided, and the switching valve, the connecting portion, and the liquid level gauge are close to each other on the side or back position of the chemical tank A chemical spray vehicle characterized by being provided at a position. The chemical tank is configured in the lateral direction from the center of the left and right direction of the vehicle body in a rear view, and the first opening is formed on the bottom surface of the chemical tank, and the first control pipe is detachably attached to the first opening, A second opening is formed on the bottom surface of the chemical tank, and a drain opening / closing lid is detachably attached to the second opening,
The chemical solution spraying vehicle according to claim 1, wherein the first opening portion and the second opening portion are respectively formed on the left and right sides from the left and right center position of the chemical solution tank in a rear view.

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