JPH0125652Y2 - - Google Patents

Description

[Detailed description of the invention] As shown in FIG. 1, the boom sprayer has a boom body 2 attached to a vehicle body 1 that can travel, and a spray pipe 4 having a large number of nozzles 3 is fixed to the boom body 2. . In addition, the boom body 2 may be housed within the boom body 2 or may be stored in the boom body 2.
A slide boom 5 is provided which is slidably held so as to be extendable to the outside of the vehicle. A spray pipe 7 having a large number of nozzles 6 is also fixed to this slide boom 5. In other words, although not shown,
A chemical solution supplied from a chemical tank provided in the vehicle body 1 is sprayed from nozzles 3 and 6 through spray pipes 4 and 7, and the spray range can be adjusted by extending and contracting the slide boom. be.

In the case of such a boom sprayer, the conventional method for fixing the spray pipe 4 to the boom body 2 is to press the spray pipe 4 against the boom body 2 using a holding plate 8, screws 9, etc., as shown in FIG. Methods such as fixing were used. However, in such conventional methods, the principle of fixing is to press the pipe with a presser plate and hold it by the strong force between the pipe and the presser plate. For this reason, in order to securely fix the nozzle so that the direction of the nozzle does not change when the pipe rotates, it is necessary to press the pipe strongly with a presser plate, but there is a limit to this as pressing too hard can deform the pipe. . For this reason, it was extremely difficult to adjust the pressure during installation, and a large number of man-hours were required. Moreover, during use, the nozzle loosens and the direction of the nozzle changes, making spraying difficult. For this reason, inspection before spraying is required, which is complicated. Furthermore, in addition to the spray pipe, parts such as a presser plate are required, and the number of parts is large, which is disadvantageous in terms of manufacturing cost and assembly cost.

This invention provides a spray tube which eliminates the above-mentioned drawbacks by providing a hollow cylindrical tube with an integral mounting arm.

FIG. 3 is a perspective view showing an embodiment of this invention, and FIG. 4 is a sectional view taken along line A-A. In the figure, a columnar tube section 11 having a chemical solution passage hole 10 is provided with a large number of nozzle attachment holes 13 for attaching nozzles 12, and a part of the tube section 11 is made to protrude horizontally along the longitudinal direction. This is bent vertically and fixed to the boom body 2 with screws 16 through screw holes 15.
The spray tube can be fixed to the side of the boom.

Figures 5a and 5b show other embodiments of this invention. In figure a, the mounting arm 14 is projected from the tube in a substantially vertical direction, and then bent horizontally so that the arm 14 is horizontal. Attach the boom body 2 with screw 16.
By fixing it to the lower part of the boom body 2, it is possible to fix it to the lower part of the boom body 2. Figure b shows screw 16
This is an example in which the tube can be fixed without using a tube, and is made to protrude horizontally from the tube and then extend vertically up and down to form a horizontal T-shape. This arm is boom 2
It is fixed by inserting it into a groove 17 provided in the. Note that the shape of the attachment arm is not limited to the above-mentioned embodiment, and various modifications can be considered depending on the shape of the boom body, the desired attachment position of the spray pipe, etc.

As explained in detail above, this idea uses a part of the hollow columnar tube part to protrude as an attachment arm.
The spray pipe can be firmly fixed to the boom body, and there is no fear that the direction of the nozzle will change during work, so the number of inspection and maintenance points before work can be reduced. Furthermore, the number of man-hours required for assembly can be reduced because the installation can be completed by only general screw-fastening work or insertion work. Furthermore, since the pipe part and the mounting arm are integrally formed, parts such as the presser plate are unnecessary, and the number of parts can be reduced, which reduces manufacturing costs.The spray pipe can be extruded as a single unit including the mounting arm. Since it is possible, it has excellent effects such as easy mass production.

[Brief explanation of the drawing]

Fig. 1 is an overall view of the boom sprayer, Fig. 2 is a view showing a conventional example, Fig. 3 is a perspective view showing an embodiment of this invention, and Fig. 4 is a sectional view taken along line A-A in Fig. 3.
Figures 5a and 5b are views showing another embodiment of this invention. In the figure, 1... Vehicle main body, 2... Boom main body, 3, 6... Nozzle, 4, 7... Spray pipe,
5...Slide boom, 8...Press plate, 9...
Screw, 10... Chemical solution passage hole, 11... Columnar tube part,
12... Nozzle, 13... Nozzle mounting hole, 1
4...Mounting arm, 15...screw hole, 16...screw.

Claims (1)

[Scope of utility model registration request] A hollow columnar tube portion having a chemical liquid passage hole in the center and a number of nozzle mounting holes for attaching nozzles for dispersing a part of the chemical liquid passing through the chemical liquid passage hole to the outside, and the hollow columnar tube portion. A spray pipe for a boom sprayer, comprising an attachment arm part formed by partially protruding outside along the longitudinal direction of the pipe part so as to be fixed to the boom.