JPH08280314A - Sprayer for agrochemical solution - Google Patents

Abstract

PURPOSE: To provide a self-propelled sprayer for spraying agrochemical solutions having no anxiety about a damage to the spraying tube by obstacles in the crop field. CONSTITUTION: In this sprayer equipped with an agrochemical solution tank 104, a solution-feeding pump and a solution-spraying tube 2, the spraying tube 2 is pirvotally supported (3) by a spraying tube supporting part 1 at its base end rotatably in the horizontal direction. A plate cum 26 having a circular periphery concentric to the rotation center (3) of the spraying tube 2 is set to the base end and a coil spring 5 is fitted between the vertical edges of a positioning rod 4 inserted into a long hole bored in the tube supporting part 1 and the vertical edges of a vertical shaft 3 to press contact the positioning rod 4 to the plate cum 26 by making the positioning rod 4 come into a depression 27 formed on the plate cum 26. Where by the spraying tube 2 is fixed to the prescribed position and, when the tube 2 hits on an obstacle, the positioning rod 4 is detached front he depression to ratate the tube 2 and create a buffered state of the tube 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying vehicle for spraying a spray with a spray rod laterally to the traveling direction, and more particularly to a support structure for the spray rod.

[0002]

2. Description of the Related Art For example, as shown in FIG. 4, a chemical liquid spraying vehicle has a chemical liquid tank 104 mounted on a self-propelled vehicle 101 such as a crawler belt vehicle, and a chemical liquid pressure pump 106 driven by a vehicle engine drives the tank. The chemical liquid in 104 is pressure-fed to the spray rod 70, and the chemical liquid is sprayed on the crop from a large number of spray nozzles 71, 71, ... Provided on the spray rod. The spray rod 70 uses a square pipe made of light metal such as aluminum as a support rod 75, and a chemical liquid conduit 72 is attached along the support rod 75, and the chemical liquid conduit 72 is connected to a chemical liquid pressure pump 106 via a hose 78.

On the other hand, the support rod 75 is supported by inserting the base end portion of the support rod 75 from both sides into a spray rod holding pipe 112 which is horizontally attached to a spray rod attachment plate 110 provided on the front surface of the chemical spraying vehicle 100. It is fixed by the retaining screw 114 and is provided so as to project in the left-right direction with respect to the traveling direction of the chemical liquid spraying vehicle 100. 116 is a mounting plate 11
0 is a mounting column having a substantially C-shaped cross section, and a fitting piece 118 fixed to the center of the spray rod holding pipe 112 is movably and fixedly fitted into the groove of the mounting column. The height of the spray rod 70 can be adjusted.

[0004]

[Problem] A conventional chemical spraying vehicle having such a configuration sprays a chemical solution on a crop while operating it by holding a handle part 102 and moving it forward or backward through uneven ridges. Is used to drive the chemical sprayer so that it does not come out of the furrows, and it is normal that the spray rod that projects a considerable length to the left and right does not pay attention. Therefore, if there are protrusions such as trees or piles or tall crops in the field, if the spray rod collides with these, it will easily bend or break, and it will be possible to perform spraying work. It had the drawback of disappearing. Further, after the work is completed, it is necessary to remove the spray rod from the holding pipe 112 and make the spray rod vertical or parallel to the traveling direction of the vehicle and re-fix the spray rod, and then move it, which is troublesome.

[0005]

SUMMARY OF THE INVENTION A first object of the present invention is to disclose a chemical spraying vehicle in which there is no risk of damage to the spray rod even if the spray rod hits an obstacle. A second object of the present invention is to disclose a chemical spraying vehicle that can easily store a spraying rod during traveling.

[0006]

A first aspect of the present invention is a vehicle (101).
Chemical liquid tank (104) and chemical liquid pressure pump (106) on top
In a drug spraying vehicle equipped with and a drug spray rod (70),
The base end of the spray rod (2) is rotatably supported by a spray rod support portion (1) provided on the chemical spraying vehicle in a horizontally rotatable manner.
A plate cam (2 having a circumferential portion concentric with the center of rotation of the spray rod
6) is fixed, and a positioning rod (4) supported by the spray rod support portion and biased toward the plate cam by spring pressure is movably pressed against the plate cam. The spray rod is positioned and fixed at a predetermined position by fitting the positioning rod into a recess (27) provided in the circumferential portion.

In the above chemical spraying vehicle, the spray rod is laterally positioned and projected by the concave portion provided in the plate cam,
When the spray rod hits an obstacle during the spraying work, the impact rod causes the positioning rod to be pushed out of the concave portion of the plate cam, so that the spray rod can be rotated. Thus, the impact force of the collision is mitigated and damage to the spray rod is prevented. Further, the storage of the spray rod may be performed by providing the plate cam with a recess into which the positioning rod is to be fitted, at a position where the spray rod contacts the side surface of the vehicle.

According to a second aspect of the present invention, in the chemical spraying vehicle defined in the first aspect, the positioning rod vertically penetrates a long hole provided in the spray rod supporting portion, and the positioning rod is provided. A coil spring is provided between the upper and lower ends of the vertical shaft and the upper and lower ends of a vertical shaft that rotatably supports the spray rod, and the positioning rod is movable in the elongated hole.
There is a chemical liquid spraying vehicle characterized by being pressed against a plate cam.

In the spray rod mounting mechanism according to the present invention, since the positioning rods are in pressure contact with each other by the pair of upper and lower coil springs, the pressure contact force acts evenly and strongly. Therefore, if the shape of the recess is formed in a mountain shape that draws a smooth bending line, the positioning rod that is about to deviate from the recess of the plate cam will be pushed by the pressing force when the impact force applied to the spray rod is small. The plate cam (and therefore the spray rod) can be returned to its original position.

[0010]

1 to 3 show an attachment structure of a spray rod which is a main part of a chemical spraying vehicle according to the present invention. The chemical spraying vehicle is similar to that shown in FIG. 4, and has a configuration in which a chemical pressure pump and a chemical tank are mounted on a self-propelled vehicle, but of course, this may be of a hand truck type. It should be noted that parts having the same functions as those of the conventional chemical spraying vehicle shown in FIG. A spray rod attachment plate 110, which is bent and extended in an L shape from the body frame of the crawler belt vehicle, is provided on the front surface of the chemical spraying vehicle so as to stand up like the conventional chemical spraying vehicle 100 of FIG. .
Similarly, a mounting column 116 having a substantially C-shaped cross section is fixed to the mounting plate 110 near the lower end thereof.

A slide plate 118a slidably fitted in the column and an abutment plate 118b abutting against the column from the opening side thereof are attached to the attachment column 116 by a tightening screw 118c. By pinching the edge of the column, it can be fixed at any height along the mounting column. The spray rod support 1 made of a square pipe is fixed to the contact plate 118b.

On the other hand, the spray rod 2 is provided with a support rod 20 made of a light weight square pipe made of aluminum alloy, and a chemical liquid conduit 22 held along the support rod 20 by a holding ring 21 suspended from the support rod 20. And a spray nozzle 23 provided in the chemical liquid conduit 22 at an appropriate pitch. Connection plates 24, 24 are provided at the base end 20a of the support rod 20 so as to sandwich the base end 20a from above and below, and a fixing bolt that penetrates both the connection plates 24, 24 and the base end of the support rod. They are connected and fixed by 25 and 25. Substantially circular plate cams 26, 26 are integrally extended from one end of the connecting plates 24, 24 so as to extend toward the spray rod support portion 1 side and contact one end of the support portion 1 from above and below.

The vertical axes 3 and 3 are inserted through the through holes 26b and 26b provided at the centers of the substantially circular plate cams 26 and 26, and the insertion ends of the vertical axes 3 and 3 are spray rods. By being screwed and fixed to the support portion 1, the shafts 3 and 3 serve as the center of rotation of the plate cam 26, and thus also serve as the center of rotation of the spray rod 2, which pivots the spray rod 2. I support you. Reference numeral 31 is a plate cam holding nut. The plate cam 26 includes a circumferential portion 2
The recesses 27, 27 formed by cutting out 6a in a substantially semicircular shape are provided so that the central angle about the vertical axis 3 is about 90 degrees.

The spray rod support portion 1 is provided with an elongated hole 11 which penetrates the support portion 1 in the vertical direction and is parallel to the longitudinal direction of the support portion 1. One end of the long hole 11 has the recess 27
It faces the turning range of. A positioning rod 4 penetrates the elongated hole in the vertical direction, and the positioning rod 4 penetrates the upper and lower ends of the vertical axes 3 and 3, and the upper and lower projecting ends 4a and 4b, and Coil springs 5 and 5 are provided between the vertical axes 3 and 3 and the projecting ends 3a and 3b. Thus, the positioning rod 4 has the recesses 27 of the plate cam at the ends on one side of the elongated holes 11, 11 provided on the upper and lower surfaces of the support portion 1.
It can be fitted into the concave portion 27 and pressed into the concave portion 27.

In the above description, the structure of the spray rod supported on the right side of the support portion 1 was described in FIG. 1, but the structure is exactly the same as this support structure, and the same spray is applied to the left side of the chemical spraying vehicle. The pole is supported. In the plate cam 26,
The notch 28 formed by linearly cutting the circumferential portion 26a is a free zone for making the plate rod free of the positioning rod 4 to facilitate maintenance and the like.

[0016]

In the above chemical spraying vehicle having such a structure, the tightening screw 118c is loosened to adjust the heights of the spray rods 2 and 2, and then the screw rods are fixed again by being tightened. The spray rod is positioned by providing the positions of the recesses 27, 27 on the plate cam so as to extend in the left-right direction, and inserting the positioning rods 3, 3 into and pressingly contacting them. When the spray rod hits the obstacle during the spraying of the chemical liquid, the impact force causes the plate cam 26 to push the positioning rod 4 against the spring pressure and move it, and swiftly rotate in the direction to alleviate the impact force. So the spray rod
Not damaged.

Also, as shown in FIG. 3, if the transition portion 27a in which the concave portion 27 transitions to the circumferential portion 26a is formed by a smooth arc, the pressure contact force applied from the positioning rod to the transition portion will be a plate. It acts as a force that turns the cam in the opposite direction. When the spraying work is completed, the spraying rods 2 are rotated to the side surface side of the chemical spraying vehicle, and the positioning rod is fitted into the other recess, whereby the spraying rod is fixed to the side surface of the chemical spraying vehicle. Therefore, it does not interfere with running.

As shown in FIG. 5, instead of the tension spring, the positioning rod has a cylindrical body 31 fixed to each of the upper surface and the lower surface of the spray rod support portion 1, in which the compression coil spring 3 is fixed.
2 is accommodated, and one end of the positioning rod 33 slidably fitted into the cylindrical body is biased by the spring 32 to move the positioning rod 33.
It is also possible to have the tip of the press contacting the cam 26.
Further, in the embodiment, the plate cams are used as a pair of upper and lower two, but as shown in FIG. 6, one side of the connecting plates 24, 24 is fixed to the spray rod supporting portion 1 and the connecting is performed. A structure in which one plate cam 36 integrally extended from the spray rod support rod 20 is rotatably supported by the vertical axis 3d between the plates may be used. 4d is a positioning rod, 11a is a long hole, and 37 is a recess.

Although the spray rod is composed of the support rod and the chemical liquid conduit as an example, the chemical liquid conduit itself may also serve as the support rod. Further, as the vertical movement mechanism of the spray rod, as shown in FIG. 7, the lower ends of a pair of parallel bars 160, 160 which are upright at a slight interval are fixed to a spray rod attachment plate 110 fixed to the chemical spraying vehicle. Then, from the front and back of this parallel bar, two fixing plates 161 having a substantially U-shaped cross section are formed.
The fixing plate 161 can be moved and fixed along the parallel bars 160 by passing it between the parallel bars, and tightening with the tightening screws 163 and 163 that engage with both fixing plates. The spray rod holding pipe 112 may be horizontally fixed to the plate.

[0020]

[Effect] According to the present invention, in the boom type chemical liquid spraying vehicle, it is possible to prevent the accident of damage to the spray rod, which could not be prevented, even if great care is taken. Also, opening and storing operations of the spray rod can be done easily, and moreover,
Since the state is maintained by the spring pressure, the spray rod can be stored on the side surface of the vehicle for easy traveling and movement, and the usability is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a main part of an embodiment of the present invention as seen from a plane direction.

FIG. 2 is a partial cross-sectional explanatory view of FIG. 1 viewed from the AA direction.

FIG. 3 is an explanatory view of FIG. 2 viewed from a plane direction.

FIG. 4 is an explanatory view showing an example of a conventional chemical liquid spraying vehicle.

FIG. 5 is an explanatory diagram showing a main part of another embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a main part of still another embodiment of the present invention.

FIG. 7 is an explanatory view showing another example of a support structure for vertically movable spray rods.

[Explanation of symbols]

 1 Spraying Rod Support 2 Spraying Rod 3 Vertical Axis 4 Positioning Rod 5 Coil Spring 11 Long Hole 24 Connecting Plate 25 Fixing Bolt 26 Plate Cam 27 Recess 100 Chemical Sprayer 104 Chemical Liquid Tank 110 Mounting Plate

Claims (2)

[Claims] 1. A chemical spraying vehicle comprising a chemical liquid tank, a chemical liquid pressure pump, and a chemical spraying rod on a vehicle, and a spraying rod support portion provided on the chemical spraying vehicle so as to be horizontally rotatable about the base of the spraying rod. A plate cam having a circumferential portion concentric with the center of rotation of the spray rod is fixed to the base end, and the spring is supported by the spray rod support portion. The positioning rod urged toward the plate cam by pressure is movably pressed, and the positioning rod is fitted into the recess provided in the circumferential portion, whereby the spray rod is moved to a predetermined position. A chemical liquid spraying vehicle characterized by being positioned and fixed to. 2. A positioning rod is provided so as to vertically pass through a long hole provided in a spray rod supporting portion, and has upper and lower ends of the positioning rod and a vertical shaft for rotatably supporting the spray rod. 2. The chemical spraying vehicle according to claim 1, wherein a coil spring is provided between the upper and lower ends, and a positioning rod is movably moved in the elongated hole and pressed against a plate cam.