JPH0321365A - Chemical spraying device - Google Patents

Abstract

PURPOSE:To well sprinkle a chemical solution by providing a throttle mechanism reducing the sprinkling amount of the chemical solution as boom is revolved from a horizontal support posture crossing an advance direction at an almost right angle in a direction allowing the leading end of the boom to approach the center of a machine body. CONSTITUTION:Booms 11 equipped with chemical solution jet orifices 12 provided at a predetermined interval are provided so as to extend in left and right lateral directions and supported so as to be made controllable in the revolution around a vertical shaft in an up and down direction. Further, a throttle mechanism 20 reducing the sprinkling amount of a chemical solution as the booms 11 are revolved from a horizontal support posture crossing an advance direction at an almost right angle in a direction allowing the leading ends of the booms to approach the center of a machine body is provided. That is, when the booms 11 are revolved so as to approach the machine body in a place where a chemical solution coating width is narrow, the jet amount of the chemical solution is reduced automatically and, therefore, the sprinkling of the chemical solution can be well performed.

Description

[Detailed description of the invention] [Industry 1-. This invention relates to a chemical spraying device suitable for field management work. [Prior art] Conventionally, this type of chemical spraying device has a chemical tank mounted on the rear of the white vehicle body, and a boom for spouting chemical liquid at the front of the machine. Chemical liquid was sprayed onto crops etc. from a chemical liquid jet 11 installed on the boom, which was supported by a large extension. [Ill M when the invention is about to be decided] However, drunkenness,
With such a conventional spraying width, when spraying mulberry liquid in a fixed width while moving the machine back and forth in a field, the spraying width may become narrower than the conventional spraying width. If you try to apply a chemical solution to this narrow area, the chemical solution will also be applied to the same area where it was sprayed before, and this will cause chemical damage. There was fear.

[Means for Solving the Problems] The present invention was developed in view of the problems mentioned above, and the following technical measures were taken.

That is, the chemical solution ++ (S71
In a chemical spraying device in which booms 11, 11 equipped with '+ + +l2... are installed extending one line laterally on the left stone 11', the front booms 1l, 11 are adjusted to rotate around the vertical axis in the vertical direction. When the booms 1l and 1l are supported as much as possible, the chemical solution dispersion force decreases as the booms 1l and 1l are rotated from a horizontal support position that intersects approximately 11°L with the direction of travel in a direction in which the tip approaches the center of the aircraft. The present invention has a structure of a chemical liquid suffocation test device characterized by being provided with a diaphragm mechanism 20 that [Example] Hereinafter, an example of the present invention will be described based on the drawings.

First, to explain the configuration, 1 is a self-powered Ilt vehicle, which has an engine 2 at the front of the fuselage and a mission case 3 that accommodates a transmission head that decelerates the transferred power of this engine 2. The structure is such that the same rotation is transmitted to the front wheels 5 and 5 and the rear wheels 6 and 6 so that the vehicle can run in four-wheel drive. A tank 8 containing a chemical solution is provided at the rear of the aircraft, and a seat 9 is fixed to this second part. The chemical liquid in the chemical liquid tank 8 is sent out by a pump 10 to the spout 12 side of a boom 11, which will be described later. The pump 10 is driven by a PTO shaft 15 that projects rearward from the mission case 3, and is arranged so that the chemical solution is spouted from the spout 12 while the pump 10 is cutting. Further, a frame 16.16 that protrudes horizontally and laterally is fixed to the intermediate portion of the fuselage in the longitudinal direction, and the rear ends of a pair of link members 17, 18 are pivoted to the frames 16, 16 by fulcrum pins 19, 19. It has been done. The outer link member 18 is divided into two parts, front and rear, and the divided parts are supported by an overlapping structure, and the link members 18a.
18b are slidably connected to each other by a pressure cylinder 24, and when hydraulic oil is fed into the hydraulic cylinder 24 and the hydraulic cylinder 24 is extended by hk, the outer link member 18 becomes the same length as the inner link member 17. It is configured as follows. Further, booms 11, 11 are rotatably pivotally attached to the distal ends of the link members 17, 18. When viewed from the side, the link members 17 and 18 are deviated in position in the roaring direction, and are configured so that the link members 17.18 do not contact and interfere with each other even if the boom 11.11 moves 1-J1. ．． Furthermore, a throttle mechanism 20 is provided at the tip of the inner link member 17, and when the boom 11 is rotated in a direction approaching the center of the aircraft in the left-right direction, the throttle mechanism 20 is operated and the boom 11, The chemical liquid ejected from the plurality of chemical liquid jet ports 12 provided along the longitudinal direction of the chemical liquid jet 11 is reduced. 4 and 5 show the detailed structure of the aperture mechanism 20. Reference numeral 21 denotes a cylindrical body with a U-shaped cross section constituting the aperture mechanism 20. Holes 22 and 23 are bored in the rear and lateral outer parts of the cylinder, while inside the diaphragm 21;
; A solid i? which connects the pine bending passage 25 that can communicate with the recitation holes 22 and 23; The parts 27 are integrated so that they can move relative to each other. The cylindrical body 21 is fixedly attached to a bottle 30 provided at the front part of the link member 17 via a leg piece 28 recessed in the lower part thereof. The well body 27 is integrally fixed to the boom 11 having a circular section FRJ via a threaded portion 3l. and boom l
1 is substantially orthogonal to the traveling direction of the aircraft body, the through holes 22 and 23 of the cylinder body 21 are connected to the A'+1 curved passage 25 of the valve body 27.
When the boom 1l is rotated in a direction approaching the center of the aircraft, the opening section of the bending passage 25 is gradually narrowed. When the boom 11 is supported by substantially perpendicular grooves, the amount of chemical spray is maximum, and as the boom 11 moves inward, the number of spray drops decreases. , numeral 39 in the figure indicates the chemical tank 8 and the guard: 1
Hose that communicates with 112. 40 is a control handle.

1-. In the example, when performing chemical liquid dispersion/It work, the boom 11 is kept horizontally parallel to the ground and substantially perpendicular to the backward direction 1i'+1 of the aircraft. Then, the pump 10 is driven to suck up the chemical liquid from the tank 8, and the machine is caused to reciprocate within the field while spouting the chemical liquid from the spout l2... Then, when you get to the edge of the field and the spreading width becomes narrower than the spreading width when traveling back and forth, the extraction cylinder 24, 24 is operated to control the left boom 11, right boom 11, or both left and right booms 11. , rotate the lug toward the center of the aircraft. Then, the valve body 27 moves in the opposite direction II. ?
The inflow 112 of the bending passage 25 is simultaneously rotated in the two directions.
5a and outflow r. 1 2 5 b is narrowed and the pump 10
Squirt from! ” 12 is reduced.
For this reason, when the spraying width is narrow, there are fewer sprayers.
The amount of chemical solution sprayed in the area of ¥100,000 is reduced by narrowing the spray width11;
The state will be close to I.

Effects of the Invention C] Since this invention is configured as described in 11; Therefore, even if the boom 11 is rotated to adjust the width of the market loss, the spray concentration of the chemical solution does not become too high as in the conventional method, making it possible to perform the spraying work successfully without causing chemical damage. becomes.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view, FIG. 3 is a perspective view of essential parts, and FIGS. 4 and 5 are sectional views. Explanation of symbols 1 Power vehicle 5, 5 Front wheel 6 Rear wheel chemical tank Boom spout throttle mechanism Name of license applicant Name of Iseki Agricultural Machinery Co., Ltd. Representative Eihisa Mizuta Figure 4 Figure 5 Figure 2l

Claims (1)

[Claims] 1) Chemical liquid spouts 12 provided at predetermined intervals...
In this chemical spraying device, the booms 11, 11 are provided with booms 11, 11 extending in the left-right and lateral directions. The aperture mechanism 20 reduces the amount of chemical spray as it rotates from a horizontal support position substantially perpendicular to the direction in a direction in which its tip approaches the center of the aircraft body.
A chemical liquid spraying device characterized by being provided with.