JPH08107745A - Agrochemical spraying machine - Google Patents

Abstract

PURPOSE: To provide an agrochemical spraying machine improved in traveling stability through lowering the center of gravity of an agrochemical tank and reducing the variation in the center of gravity due to agrochemical quantity by setting up the agrochemical tank mounted on the self-propelled spraying machine equipped with a prime mover section, agrochemical injection section, driving section, etc., at an intermediate position relative to left and right and front and rear wheels. CONSTITUTION: A prime mover section, an agrochemical injection section 8, and a reel section 9 are mounted in the rear of an agrochemical tank 5 and a driving section 6 on a self-propelled traveling machine body B, and an agrochemical injection port is closed with an openable lid 13. The agrochemical tank is set up at an intermediate lower position relative to left and right and front and rear wheels 2, 2', 3, 3' to lower its center of gravity and reduce the variation in the position of the center of gravity of the vehicle body due to the change in the quantity of the agrochemical filled in the tank.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a chemical sprayer.

[0002]

2. Description of the Related Art Conventionally, when spraying chemicals such as fertilizers and pesticides on a lawn at a golf course, a chemical spray tank filled with a low-concentration chemical diluted to be suitable for spraying is mounted on the chemical sprayer. , The same chemical is sprayed while running on the lawn.

[0003]

However, since the above chemical spraying machine uses a vehicle body such as a golf cart, the position of the chemical liquid tank avoids interference with other equipment mounted on the vehicle body. To the front or rear of the car body for
Since it is arranged at a high position and the center of gravity is high when the chemical liquid tank is full, there is a problem that running stability deteriorates.

[0004]

According to the present invention, there is provided a chemical spraying machine comprising a self-propelled machine frame having left and right front and rear wheels, a prime mover section, a chemical tank, a chemical injection section, and a driving section. Is provided at an intermediate position between the left, right, front and rear wheels.

[0005]

Embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a chemical spraying machine A according to the present invention.
In the medicine spraying machine A, the left and right front wheels 2, 2 ′ are pivotally rotatably pivoted on the front left and right sides of the machine frame 1, and the left and right rear wheels 3, 2 ′ are respectively supported on the left and right rear portions. 3'is rotatably supported to form a traveling body B.

A front cover 4 is attached to the front part of the upper surface of the machine body frame 1, and a drug tank 5 is mounted on the right side and a driving part 6 is mounted on the left side of the center part. It is located in the middle of 2 ', 3,3'.

Behind the medicine tank 5 and the driving section 6, a prime mover section 7, a medicine injection section 8 and a reel section 9 are arranged in this order from the front.
It is equipped with and.

A steering handle 10, which is erected on the rear surface of the motor unit 7, a pedal 11, and a seat 12 are arranged in the driving unit 6.

As described above, the medicine tank 5 is arranged at the intermediate position between the left, right, front and rear wheels 2, 2 ', 3, 3', and on the right side of the driving section 6, and the front side surface is at the front high rear. It is inclined low, and the rear side surface is formed by connecting the vertically formed upper part and the slightly rearward inclined lower part with a curved surface that bulges obliquely forward and upward, and the right side surface and the upper surface are before and after forming the vehicle body. It is formed on a smooth curved surface continuous with the fender, and a drug injection hole is formed on the upper surface,
The medicine injection hole is closed by a lid 13 that can be opened and closed.

As shown in FIG. 4, the medicine injecting section 8 communicates with the medicine tank 5 through a first valve 14 and a medicine pump 15, and connects the medicine pump 15 with a branch pipe 16.
One side of 16 is connected to a medicine discharge port 19 for discharging a medicine 18 to the outside through a second valve 17, and the other end of the branch pipe 16 is connected to a compression bag 21 provided in a compression tank 20. .

A gap 22 between the compression tank 20 and the compression bag 21 communicates with a pressurized water inlet 24 via a water pipe 23.

In FIG. 4, 25 and 26 are air bleeding valves, 27 is a drain valve, and 28 is a coupler.

In the reel portion 9, a hollow shaft 29 is horizontally mounted, and a medicine hose reel 31 in which a medicine hose 30 is wound around the hollow shaft 29 and pressure water is introduced from a pipe 33 of a sprinkler 32 described later. A water hose reel 35 around which a water hose 34 for winding is wound is pivotally supported.

Then, a coupler 28 for connecting the winding base end of the drug hose 30 to the drug discharge port 19 and a free end to the drug injection port 37 of the pipe 33 is attached, and a water hose 34. The base end of the winding is communicated with the pressure water introduction port 24, and the free end is provided with a coupler 28 for communication connection with the medicine injection port 37 of the pipe 33.

FIG. 5 shows the usage state of the chemical spraying machine A in the golf course G. In the golf course G, a pipe 33 for supplying water to the sprinkler 32 is buried.
A main valve 39, a solenoid valve 40, a venturi portion 41 and a branch valve 42 are provided from the upstream side on the upstream side of the pipe 33, and the venturi portion 41 gradually contracts in the middle of the pipe 33 as shown in FIG. A small diameter portion 43 is formed that has a diameter and then gradually increases in diameter.

A pressure water outlet 45 is provided on the upstream side of the small diameter portion 43 for communicating with the water hose 34 via the pressure water outlet valve 44, and a medicine injection valve 36 is provided in the small diameter portion 43. The drug injection port 37 is connected.

With this structure, the second portion of the chemical spraying machine A is
The valve 17 is closed, the first valve 14, the air bleeding valve 25 and the drain valve 27 of the compression tank 20 are opened, and the chemical pump 15
When the fuel tank is activated, the medicine 18 in the medicine tank 5 is compressed.
It is press-fitted into 21 and the compression bag 21 is in an expanded state in the compression tank 20.

Then, the chemical hose 30 is connected to the chemical injection port 37 of the pipe 33, and the water hose 34 is connected to the pressure water outlet 45.

Next, the first valve 14 on the side of the chemical sprayer A,
The air bleeding valve 25 and the drainage valve 27 of the compression tank 20 are closed, and the main valve 39, the solenoid valve 40 and the pressure water extraction valve 44 on the piping 33 side are closed.
When is opened, the pressure water in the pipe 33 flows into the gap 22 between the compression tank 20 and the compression bag 21, and the chemical 18 in the compression bag 21 is discharged.
Therefore, the same pressure as the pressure water in the pipe 33 acts.

Next, when the second valve and the medicine injection valve 36 are opened, the small-diameter portion 43 has a low pressure due to the Venturi effect, so that the medicine 18 in the compression bag 21 is injected into the pipe 33 and the inside of the pipe 33. Is mixed with flowing water to be diluted to a concentration suitable for spraying (for example, 40 to 50 times), and spouted from the sprinkler 32 in the form of mist.

The above-mentioned dilution of the drug 18 is performed by pumping the drug 18 into the drug pump.
Instead of injecting into the tubing 33 at a pressure of 15, the compression bag 21
By injecting the drug 18 into the pipe 33 with pressure water having the same pressure as the water in the pipe 33 acting on the pipe 33, the injection pressure of the drug 18 becomes equal to the negative pressure generated in the venturi section 41, and the negative pressure is the same. Becomes larger as the flow velocity of water in the pipe 33 becomes faster, so even if the flow velocity of the water in the pipe 33 changes, the drug 18 can be diluted at approximately the same rate, and the pipe 18 was connected to the pipe 33. Regardless of the number of sprinklers 32, it is possible to spray a drug solution having a substantially constant concentration.

In this way, the chemical 18 can be diluted with the water flowing in the pipe 33 and sprayed, so that the chemical sprayer A can be loaded with the high-concentration chemical 18, and the chemical tank 5 Even if the capacity is reduced, the chemical solution can be sprayed on a large area of the lawn T, and the amount of the drug 18 to be loaded can be reduced to reduce the weight of the vehicle body, so that the damage to the lawn T can be minimized. be able to.

Particularly, since the medicine tank 5 is arranged at the center of the vehicle body, that is, at the intermediate position between the left and right front and rear wheels 2,2 ', 3,3', the left and right front and rear wheels 2,2 ', 3,3'. The center of gravity of the medicine tank 5 can be lowered by arranging the medicine tank 5 at a low position without being interfered with by the vehicle. Moreover, even if the filling amount of the medicine 18 is changed, the center of gravity of the vehicle does not fluctuate much. It is possible to improve running stability.

When the chemical spraying machine A is not used,
The pressure water extraction valve 44 and the chemical injection valve 36 are closed, and the main plug 39 of the pipe 33 and the solenoid valve 40 are operated to spray the water sent to the pipe 33 from the sprinkler 32 to irrigate the lawn T. can do.

[0026]

According to the present invention, in a drug spraying machine in which a motor unit, a drug tank, a drug injection unit and a driving unit are mounted on a self-propelled traveling machine equipped with left and right front and rear wheels, the drug tank is left and right. By arranging the medicine tank at the middle position of the front and rear wheels, the medicine tank is arranged at the center part of the vehicle body, that is, at the middle position of the left and right front and rear wheels, so that the medicine tank can be placed at a low position without being interfered by the left and right front and rear wheels. Place it
The center of gravity of the drug tank can be lowered, and the vehicle center of gravity position does not fluctuate even when the drug filling amount changes, so that the running stability can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory side view of a medicine spraying machine according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is an explanatory plan view of the same.

FIG. 4 is a schematic explanatory view showing a configuration of a drug injection unit.

FIG. 5 is an explanatory view showing a usage state of the chemical spraying device of the present invention on a golf course.

[Explanation of symbols]

 A medicine sprayer B traveling machine body 2 left front wheel 2'right front wheel 3 left rear wheel 3'right rear wheel 5 medicine tank 6 driving section 7 prime mover section 8 medicine injection section

Claims (1)

[Claims] 1. A self-propelled traveling machine body (B) having left and right front and rear wheels (2), (2 '), (3), and (3'), a prime mover section (7), and a drug tank.
(5), in the drug sprayer (A) equipped with the drug injecting part (8) and the operating part (6), install the drug tank (5) into the front left and right wheels.
(2) A chemical sprayer characterized by being arranged at an intermediate position between (2 '), (3) and (3').