JP3596183B2 - Chemical spraying boom - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chemical spraying boom that is attached to a tractor and sprays a chemical solution. Try to do it.
[0002]
[Problems to be solved by the invention]
The spray amount of the chemical spray depends on the size of the nozzle and often depends on the purpose of spraying.When trying to change the spray amount using the same nozzle, change the liquid pressure in the chemical circuit or use a larger or smaller nozzle. There are methods such as replacement, but these methods have drawbacks such as a large change in the spray pressure sprayed from the nozzle and a complicated operation.
[0003]
[Means for Solving the Problems]
According to the present invention, a pipe 4 in which a large nozzle 3 having a large amount of chemical liquid is arranged and a pipe 6 in which a small nozzle 5 having a small amount are arranged are integrally formed on a chemical spraying boom 2 supported on a tractor body 1. The chemical liquid spraying boom is configured to spray the liquid chemical by switching the chemical liquid supply between the pipes 4 and 6.
[0004]
【The invention's effect】
The chemical spraying boom 2 is supported on the tractor vehicle body 1 and supplied to the pipe 4 or the pipe 6 of the spraying boom 2 by driving a chemical pump. When the liquid is supplied to the pipe 4, the chemical liquid is sprayed more from the large nozzle 3 disposed on the pipe 4. When the liquid is switched to the pipe 6 and supplied, the liquid chemical is supplied from the small nozzle 5 disposed on the pipe 6. Is sprayed a little.
[0005]
In this way, the chemical spraying boom 2 is provided with the large nozzles 3 having a large or small amount of the chemical spray and the pipes 4 and 6 in which the small nozzles 6 are separately arranged so that the chemical can be switched and supplied. Therefore, an operation of adjusting the chemical spray pressure every time the nozzles 4 and 6 are switched is unnecessary, and an efficient spray operation can be performed by a simple operation by switching the supply of the chemical to the pipes 4 and 6.
[0006]
In addition, since the spraying boom 2 has two pipes 4 and 6 for each of the nozzles 3 and 5, which are integrally formed, the rigidity can be increased even when the spraying boom is long and stable spraying is performed. Can be made.
[0007]
【Example】
The tractor body 1 has an engine mounted under a front hood 7, and can drive and drive a front wheel 9 and a rear wheel 10 that can be steered by a steering handle 8. On the rear part of the vehicle body 1, a tank 12 formed to extend from both left and right sides of the cockpit 11 to the rear side is mounted. The spraying boom 2 is attached to a front portion of the vehicle body 1 by a lift link mechanism 13, and can be folded and stored in a posture along the lateral side of the vehicle body 1 when not in use.
[0008]
The lift link mechanism 13 pivotally connects the parallel link 14 to the bracket 15 so as to be vertically rotatable, and is extended and contracted between the front link 17 and the lower link of the parallel link 14 by driving the geared motor M1. The telescopic cylinder 18 is provided, and the parallel link 14 can be moved up and down by expansion and contraction of the telescopic cylinder 18.
The distributing boom 2 is attached to the front link 17 and includes a senta boom 2A to which the distributing boom is attached, and side booms 2B which are foldable on both right and left sides and are connected by hinges 19. Each of these booms 2A and 2B has a hollow section 20 and has a hook-shaped cross section. The pipe 4 is arranged along the lower end of the hook and the pipe 6 is arranged along the upper end. are doing. A large nozzle 3 having a large spray nozzle diameter is screwed and attached to each pipe 4, and a small nozzle 5 having a small spray nozzle diameter is screwed and attached to the pipe 6. They are set at almost the same position.
[0009]
The supply of the chemical liquid to the pipes 4 and 6 is performed by driving a pump P mounted on the rear end of the vehicle body 1. When the pump P is driven, the chemical solution in the chemical solution tank 12 is supplied between the pipes 4 and 6 of the centaboom 2A and the side boom 2B via the connecting hose 21 via the pressure chamber manifold 23. An operating tool 22 for operating a valve is provided on the side of the cockpit 11, and a boom cock 30 for opening and closing liquid supply to the centaboom 2A or each side boom 2B, and pipes 4 and 6 in each boom 2A, 2B. The switching valve 33 and the like for switching the liquid supply can be operated. The boom cock 30, the switching valve 33, and the like are provided near the manifold 23. 31 is a main cock for switching the flow from the pump P to the manifold 23 and the tank 12, and 32 is a pressure regulating valve for adjusting the fluid pressure in the manifold 23.
[0010]
By operating the operating tool 22, the boom cock 30, the switching valve 33, and the like are operated to select the centa boom 2A, the side boom 2B, and the like, and select the large nozzle 3, the small nozzle 5, and the like. To spray the chemical solution. In each centaboom 2A and side boom 2B, the supply of the chemical is performed to the pipe 4 or 6, and when the chemical is supplied to the pipe 4, it is not supplied to the pipe 6, and when it is supplied to the pipe 6, It is not supplied to the pipe 4. For this reason, spraying is performed only from the large nozzle 3 or the small nozzle 5 of the selected pipe.
[0011]
The side boom 2B at the time of spraying the chemical solution is turned outward around the hinge 19 to be in the state B along the extension line to the outside of the centric boom 2A. This operation is performed between the side boom 2A and the centric boom 2A. The rotation is performed by a cylinder 25 which is expanded and contracted by a geared motor M2. When the side boom 2B is stored after the chemical solution is sprayed, the side boom 2B is rotated around the hinge 19 toward the vehicle body 1 by the telescopic cylinder 25, and the arms 26 provided at both ends of the centaboom 2A are provided. The boom holder 24 of FIG.
[0012]
In FIG. 5, the point different from the above example is that the sectional shape of the spraying boom 2 is T-shaped, and pipes 4 and 6 are integrally formed on the upper side of the T-shaped form. The hollow portion 20 is formed, and is divided into a central hollow portion 20C and left and right hollow portions 20S. A blow hole 27 is provided below these hollow portions 20C, and a lower portion of the hollow portion 20S is formed. Blow holes 28 and 29 are provided, and the wind pressure from the blower on the vehicle body 1 side is sent to these hollow portions 20C and 20S, and together with the spray from the large nozzle 3 or the small nozzle 5, the air is blown from these distribution holes 27 to 29. It is configured to enhance the effect of spraying the chemical by the blast of.
[Brief description of the drawings]
FIG. 1 is a perspective view of a chemical solution spraying boom section.
FIG. 2 is an overall plan view.
FIG. 3 is a side view thereof.
FIG. 4 is a block circuit diagram of spraying a chemical solution.
FIG. 5 is a perspective view of a drug solution spraying boom part showing another embodiment.
[Explanation of symbols]
1 body 2 spraying boom 3 large nozzle 4 pipe 5 small nozzle 6 pipe

Claims (1)

On a chemical spraying boom 2 supported on a tractor body 1, a pipe 4 in which a large nozzle 3 with a large amount of chemical spray is arranged and a pipe 6 in which a small nozzle 5 with a small amount are arranged are integrally formed. A chemical spraying boom for spraying by switching the chemical supply between both pipes 4 and 6.

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