JPH1075700A - Spray nozzle supporting structure for self-propelled sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray nozzle supporting structure for spraying on the surface of the earth to be adopted to a self-propelled sprayer, causing no spray unevenness, no unsprayed part and no flying up of a chemical solution. SOLUTION: Wheel arms 15 are vertically installed from a horizontal supporting lever 14 to be held by a spray hole strut 2 of a self-propelled sprayer, guide wheels 17 are fixed to shafts at the bottoms of the wheel arms 15 and springs for energizing the guide wheels 17 downward are laid in the middle of the wheel arms to make the vertical length of the wheel arms 15 changeable. Auxiliary levers 18 are extended from the wheel arms 15 to the right rear of the guide wheels 17, the guide wheels are provided with chemical solution hoses 19 having spray nozzles at their tips and umbrella bodies 21 of approximately rectangular shape in a plane view are rotatably installed right above the spray nozzles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled sprayer, for example, a type in which a chemical tank is mounted on a crawler-type or wheel-type traveling device, or connected to a separately installed chemical tank. The present invention relates to a mounting structure for an injection hole adapted to a spraying operation on the ground surface, for example, in a type in which a hose is wound up and run while being pulled out.

[0002]

2. Description of the Related Art Conventionally, a self-propelled sprayer in which a chemical solution tank is mounted on a crawler type or wheel type traveling device and an injection hole is supported at a rear end of a vehicle body is known. 5
9-27854, Heikai 4-957, Heihei 6-416
66, Japanese Utility Model Laid-Open No. 7-28376, Japanese Patent Laid-Open No. 7-255347
And the like. Among these, as for the support structure of the injection hole, two vertical spray pipes having an injection hole at the rear end of the vehicle body are provided in a pair on the right and left, or the vertical support pipe is provided with the injection hole. It is a structure that supports a horizontal spray tube. Some have a structure in which a vertical spray pipe having an injection hole is rotatable left and right to avoid uneven spray. Also, there is a type in which a hose is connected to a separately installed chemical solution tank, and the hose is wound up or unwound, and travels in a remote automatic control type. The same is true.

[0003]

The self-propelled sprayer itself can be applied to various spraying operations. However, depending on the object to be sprayed, the spraying operation is actually performed unless the support structure of the injection hole is changed in accordance with the spraying operation. Abnormal on the above. When spraying near the ground surface (for example, undergrowth control work or extermination of nematodes in the ground), the chemical sprayed from the injection hole must be covered over the entire width of the target spray. The soaring of the bouncing is a problem. In addition, if the injection holes are arranged slightly on the ground, the injection holes will move up and down even with a small amount of unevenness on the surface of the ground, causing unevenness in spraying. Therefore, it is also important to guide the injection hole at a constant height.

[0004]

The present invention uses the following means in order to solve the above-mentioned problems in surface spraying by a self-propelled sprayer. First, in the self-propelled sprayer, the wheels which are urged downward by the left and right horizontal support rods attached to the rear end of the vehicle body and whose vertical height can be freely changed are vertically supported at appropriate positions. An injection hole will be installed immediately after. An umbrella body is provided so as to cover the upper part of each injection hole. Furthermore, the umbrella body is made rotatable horizontally, and its shape is
The horizontal rotation changes the width of the plane covered by the umbrella body.

[0005]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a self-propelled sprayer adopting an injection hole support structure for surface spraying, FIG.
FIG. 3 shows the guide wheel 1 in the narrow spray target strip.
FIG. 4 is a schematic plan view showing an arrangement relationship between the umbrella body 7 and the umbrella body 21. FIG.
5, FIG. 5 is a front view of a self-propelled sprayer mounted with a chemical tank, FIG. 6 is a rear view thereof, FIG. 7 is a side view thereof, FIG. 8 is a plan view thereof, and FIG. It is a perspective view which shows the mode of the spraying operation of the hose extension type self-propelled sprayer.

First, there are two types of self-propelled sprayers that employ the injection hole support structure of the present invention. One is a type equipped with a chemical liquid tank shown in FIGS. 5 to 8, and the other is a hose extension type shown in FIG. The former is applied to spraying work with a person in front of the vehicle body as the vehicle travels, and the vehicle body is equipped with a chemical solution tank, and the chemical solution or water in the mounted chemical solution tank is injected from the injection hole. Spray it. The latter is in the house
The unmanned operation is promoted in the entire process, and the sprayer is provided with a drive device on the vehicle body itself or is driven by remote control. For example, in FIG. 9, when the sprayer A is moved in the front-rear direction, it is driven by its own driving device, and when moved in the lateral direction, the sprayer A is placed on a carriage B that can move on the rail R. The sprayer A is mounted, a wire is connected to a truck B from a winch, and the truck B is pulled. The chemical solution tank is separately installed, connects the chemical solution tank and the sprayer A via a hose, and moves the sprayer A (or the trolley B) to the hose H.
And take it out.

The injection hole support structure according to the present invention shown in FIGS. 1 to 4 is employed in the self-propelled sprayer mounted on a chemical liquid tank shown in FIGS. 5 to 8 in FIG. The hose extension type shown in the figure may be adopted.

The structure of a self-propelled sprayer mounted on a chemical liquid tank will be described with reference to FIGS. First, as a traveling device, rolling wheels 7 and 8 and an idler 9 are suspended on the left and right sides of the traveling frame 1, and the driving sprockets 6 are disposed on the left and right sides of a traveling mission case M disposed immediately before the traveling frame 1.
And a crawler 10 is wound around a drive sprocket 6, rolling wheels 7, 8 and an idler 9 disposed on the same side.

A power section support frame 11 is provided above and in front of the traveling frame 1 to extend therefrom.
An engine E and a dynamic injection P are mounted on 1. A handle 12 is erected from the power support frame 11 to an upper portion of the engine and the dynamic jet P, and an operation panel 13 having several levers is disposed above the handle 12. A chemical solution tank 1 is mounted on the traveling frame 1 behind the power unit formed in this manner, and an injection hole support 2 is erected from the rear end of the traveling frame 1 behind the chemical solution tank T, A chemical solution outlet 5 from the chemical solution tank T is provided near the base end of the nozzle hole support 2, and connects the end of a chemical solution hose 19 (shown in FIGS. 1 and 2) to this. is there. A stay 3 for attaching a support rod 14 and a spray pipe, which will be described later, is externally slidably attached to the injection hole support 2 and can be fixed in position by a fixing screw 4.

In the spraying operation, the operator operates the steering wheel 12 and operates levers while standing in front of the running vehicle body and watching the spraying state of the injection holes supported by the rear spraying column 2. To carry out the spraying operation. Of course, with the remote control type, the operator can control the traveling and spraying without being near the vehicle body.

An injection hole support structure for surface spray according to the present invention will be described with reference to FIGS. This is used for spraying on the ground just above the ground to remove nematodes in the ground and for removing undergrowth. It is important to prevent the sprayed chemical solution from rising. As shown in FIGS. 1 and 2, a horizontal support rod 14 is attached to the injection hole support 2. The support rod 14 is attached to the stay 3 so that the height can be adjusted by a sliding operation of the stay 3 on the injection hole support 2. At the appropriate position of the support rod 14, the upper end of the wheel arm 15 is attached (one in the left and right directions via the vehicle body in FIG. 1). A guide wheel 17 is provided at the lower end of the wheel arm 15.
, But an intermediate portion of the wheel arm 15 urges the guide wheel 17 downward (that is, applies a ground pressure).
A spring 16 is provided, and by the expansion and contraction of the spring 16,
The upper and lower ends of the wheel arm 15 can be extended.

An auxiliary rod 18 extends from the position below the lower end of the spring 16 of the wheel arm 15 toward the rear of the guide wheel 17, and the auxiliary rod 18 extends from the chemical solution outlet. A chemical solution hose 19 to be provided is attached, and an injection hole 20 at the tip of the chemical solution hose 19 is arranged behind the guide wheel 17. In addition, an umbrella body 21 is disposed at a position directly above the injection hole 20 so as to loosely fit the auxiliary rod 18 and the chemical solution hose 19 so as to cover the injection hole 20. To
It is rotatable as shown in FIGS. At the time of the spraying operation, the guide wheel 17 guides the nozzle hole 20 so that the nozzle hole 20 moves on the spray target line correctly.

The umbrella body 21 covers the upper portion of the injection hole 20 so that the chemical liquid sprayed from the injection hole 20 does not soar into the air, and sprays all of the chemical liquid onto the ground surface. In addition,
In order to reliably spray the entire surface of the ground to be sprayed, the width of the umbrella body 21 must be changed in accordance with the width of the spray target strip. For this reason, the umbrella body 21 has a substantially rectangular shape in plan view, and in the case of a narrow spray target strip, the umbrella body 21 is arranged so that the short side has a horizontal width as shown in FIG. In the case of a wide spray target strip, as shown in FIG. 4, the umbrella body 21 is rotated to expand the lateral width (L1 <L2).

As shown in FIG. 1, when the wheel arms 15 are disposed on the left and right sides of the vehicle body, if the vertical length of the wheel arms 15 is not changed, the frequent occurrence of irregularities on the surface of the ground causes In this case, the guide wheel 17 is lifted up, the height difference h between the injection hole 20 and the ground surface shown in FIG. 2 fluctuates, and the spray becomes uneven. If it rises too high, the umbrella 21
Cannot cover the liquid medicine, and the liquid medicine leaks from the umbrella body 21. Therefore, as described above, the spring 16 is provided on the wheel arm 15 so that the length of the wheel arm 15 can be freely changed, and the guide wheel 17 is always in contact with the ground surface by the downward biasing force of the spring 16, The spraying operation can be performed with the height difference h between the injection hole 20 and the ground surface unchanged.

[0015]

According to the present invention, the injection hole support structure for the surface spray employed in the self-propelled sprayer is as described above.
The following effects are obtained. First, by configuring as in claim 1, the spring expands and responds even if there is unevenness on the ground surface, and the wheel is always lifted from the ground surface by the downward biasing force of the spring, and is always in contact with the ground, Immediately after that, the height of the orifice from the ground surface always remains constant. Therefore, the spray condition from the injection hole is always constant, and no spray unevenness occurs.

Furthermore, since the umbrella body covers the injection hole, the chemical liquid sprayed from the injection hole is surely applied to the ground surface without waste so that the chemical liquid does not soar into the air. be able to.

Further, according to a third aspect of the present invention, the umbrella body is rotated in accordance with a change in the lateral width of the ground surface (spray target strip) to be sprayed, so that the entire width of the spray target strip is adjusted. Can be covered with body. Therefore, regardless of the width of the spray target strip, the chemical spray can be applied over the entire width of the strip, leaving no spray undesired, and improving the effects of removing undergrowth on the ground and exterminating underground nematodes.

[Brief description of the drawings]

FIG. 1 is a perspective view of a self-propelled sprayer that employs an injection hole support structure for surface spray.

FIG. 2 is also a schematic side view.

FIG. 3 is a schematic plan view showing an arrangement relationship between a guide wheel 17 and an umbrella body 21 in the spray target strip having the same narrow width.

FIG. 4 is a schematic plan view showing an arrangement relationship between a guide wheel 17 and an umbrella body 21 in a spray target strip having the same wide width.

FIG. 5 is a front view of a self-propelled sprayer mounted on a chemical liquid tank.

FIG. 6 is a rear view of the same.

FIG. 7 is a side view of the same.

FIG. 8 is a plan view of the same.

FIG. 9 is a perspective view showing a spraying operation of a hose extension type self-propelled sprayer.

[Explanation of Symbols] T Chemical liquid tank 1 Running frame 2 Injection hole support 3 Stay 4 Fixing screw 14 Support rod 15 Wheel arm 16 Spring 17 Guide wheel 18 Auxiliary rod 19 Chemical liquid hose 20 Injection hole 21 Head body

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takashi Maruyama 1-32 Chayacho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] In a self-propelled sprayer, wheels that are urged downward from a left and right horizontal support rod that is supported by a vehicle body and whose vertical height can be varied are vertically supported at appropriate positions. An injection hole support structure for a self-propelled sprayer, wherein an injection hole is provided immediately behind wheels. 2. The injection hole support for a self-propelled sprayer according to claim 1, wherein an umbrella body is provided so as to cover above each injection hole. Construction. 3. The injection hole support structure for a self-propelled sprayer according to claim 2, wherein the umbrella body is horizontally rotatable, and the shape of the umbrella body is the width of a plane covered by the umbrella body. An injection hole support structure for a self-propelled sprayer characterized by having a shape that fluctuates.