JPH0515971Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention relates to a boom sprayer that sprays pesticides, etc. on crops in fields, and more specifically, it applies to parts hidden under the upper end of the material to be sprayed. The present invention relates to a boom sprayer that can appropriately spray chemical solutions.

PRIOR ART

A boom sprayer is used to spray pesticides, etc. on crops planted in vast fields, and consists of a boom that extends horizontally at right angles to the direction of travel, and a boom that extends along the direction of extension of the boom. It has a plurality of nozzles arranged in a row. Agrochemicals are then sprayed onto crops from a nozzle to control pests, pathogens, and the like.

Conventional boom sprayers spray pesticides from above the crops in their natural state, without lifting off the top of the crop in order to apply the pesticide to the area below the top of the crop.

Further, Japanese Utility Model Application Publication No. 59-77378 discloses that a one-wheel type pest control machine is equipped with a grass divider in order to make the machine run smoothly.

[The problem that the idea aims to solve]

With conventional boom sprayers, the spray from the nozzle adheres well to the upper part of the object to be sprayed, but it does not reach the parts hidden under the upper part, resulting in insufficient control of the lower parts. It's summery.

The pest control machine disclosed in Japanese Utility Model Application Publication No. 95-77378 has a nozzle that
Rather than placing it above the object to be sprayed, it is placed near the root of the object to spray pesticides to the root of the object. Therefore, it is insufficient to use as a basis for improving pesticide spraying when the nozzle is arranged above the object to be sprayed, as in a boom sprayer.

The purpose of this invention is to provide a boom sprayer that can appropriately spray a chemical solution to a portion hidden below the upper end of an object to be sprayed.

[Means to solve the problem]

This invention will be explained using reference numerals in the drawings that correspond to the embodiments.

In the boom sprayer 10 of claim 1, the boom 1
8 and 20 extend horizontally at right angles to the traveling direction, and a plurality of nozzles 22 are directed downward and are arranged along the booms 18 and 20 to eject a chemical solution. The contact portions 30, 44 are connected to the boom 18,
The upper end portion 42 of the bendable object 40 is bent by contact, and the portion below the upper end portion 42 is exposed to the spray from the nozzle 22.

In the boom sprayer 10 according to the second aspect of the present invention, the abutting portions 30, 44 extend substantially parallel to the booms 18, 20 and have a circular cross section.

In the boom sprayer 10 according to the third aspect, the contact portions 30, 44 are pyramids 44 with their apexes directed forward and downward.

In the boom sprayer 10 according to the fourth aspect, the contact portions 30, 44 are rotatably supported by the roller 5.
It is 4.

In the boom sprayer 10 according to the fifth aspect, the roller 54 is elastic and deforms elastically when it comes into contact with the material to be sprayed 40 .

In the boom sprayer 10 of the present invention, the booms 18 and 20 extend horizontally at right angles to the traveling direction, and bend the upper end portion 42 of the bendable object 40 by contact. multiple nozzles 22
are directed downward and are arranged substantially parallel to the booms 18, 20 obliquely upward behind the booms 18, 20, and the upper end portions 4 by the booms 18, 20
The chemical solution is squirted onto the part exposed by the bending of step 2.

In the boom sprayer 10 of claim 7, the booms 18, 20 have a circular cross section.

[Effect]

In the device of claim 1, the contact portions 30, 44
is located diagonally below the front of the booms 18 and 20,
As the boom sprayer 10 moves forward, it comes into contact with the upper end portion 42 of the material to be sprayed 40 and bends the upper end portion 42 . As a result, the portion of the material to be sprayed 40 hidden under the upper end portion 42 is exposed toward the nozzle 22 and is sprayed by the nozzle 22 .

In the second aspect of the invention, the upper end portion 42 of the object 40 to be spread comes into contact with the circular circumferential surfaces of the contact portions 30 and 44 and is bent forward in the traveling direction of the boom sprayer 10.

In claim 3, as the pyramid 44 moves forward,
The upper end portion 42 of the object 40 to be sprayed is bent forward and left and right, and the upper end portion 42 is exposed to the spray from the nozzle 22.

According to the invention of claim 4, as the roller 54 collides with and comes into contact with the upper end portion 42 of the material to be spread 40,
Forces that would rotate and drag the upper end portion 42 of the material to be spread 40 are prevented from being applied to the upper end portion 4 .

In the invention of claim 5, the roller 54 is rotated and elastically deformed due to contact with the upper end portion 42 of the object 40 to be spread, and the impact force of the roller 54 on the upper end portion 42 of the object 40 to be spread is reduced. decreases.

In the invention of claim 6, booms 18, 20
As the boom sprayer 10 moves forward, it comes into contact with the upper end portion 42 of the material to be sprayed 40, and the upper end portion 42
bend. Since the nozzle 22 is located diagonally above the rear of the booms 18 and 20, the upper end portion 42
The part of the material to be sprayed 40 hidden under is exposed toward the nozzle 22 due to the bending of the upper end part 42,
The spray from the nozzle 22 is applied.

In the invention of claim 7, the upper end portion 42 of the material to be spread 40 contacts the circular circumferential surface of the booms 18, 20,
It is bent forward in the direction of movement of the boom sprayer 10.

〔Example〕

This invention will be described below with reference to embodiments shown in the drawings.

FIG. 3 is a view of the boom sprayer 10 from the rear. The boom sprayer 10 has tires 12
It is attached to the rear of a self-propelled pesticide work vehicle 14, and is equipped with a chemical solution tank 16 for storing pesticides. The center boom 18 extends horizontally from side to side at an appropriate height from the ground, and the two side booms 20 are rotatably connected to the left and right ends of the center boom 18, and are connected to the center boom 18 in the working position. It is considered to be a horizontal position in a straight line. The plurality of nozzles 22 are attached at equal intervals to nozzle pipes 34 (described below) that are suspended along the center boom 18 and side booms 20, with their nozzles directed downward, and in the extending direction of the center boom 18 and side booms 20. becomes an array. The pump 24 is driven by rotational power from the agricultural work vehicle 14, sucks in the agricultural chemicals in the chemical liquid tank 16 through a pipe line 26, and
It is pumped through the main line 28 to the nozzle 22 . The contact pipe 30 is provided corresponding to the center boom 18 and the side boom 20, and is
and the center boom 1 via the stay 32 so as to be in a diagonally downward position in front of the side boom 20.
8 and side boom 20.

FIGS. 1 and 2 are diagrams showing the positional relationship between the center boom 18, the side booms 20, and the contact pipe 30 from the side and from above. Nozzle pipe 34
are fixed to the lower surfaces of the center boom 18 and side booms 20, and the stay 32 is welded to an abutment pipe 30 having a circular cross section at its front end. The overhang part 36 is fixed to the front side of the center boom 18 and the side boom 20 so as to extend forward, and the bolt 37 is inserted through the rear end of the stay 32 and the overhang part 36, and then screwed onto the nut 38. The angle of the stay 32 can be freely adjusted.
2 is fixed to the overhang portion 36. The crop 40 has an upper end portion 42 consisting of leaves, stems, etc. that protrudes upward, and the upper end portion 42 normally hides the lower portion from above. The abutment pipe 30 is set at a height such that it is located approximately at the lower end of the upper end portion 42 .

The operation of this embodiment will be explained. The contact pipe 30 is connected to the center boom 18 and the side boom 2.
Boom sprayer 1 is located diagonally below the front of
0, it comes into contact with the upper end portion 42 of the crop 40 and bends the upper end portion 42. Thereby, the portion of the crop 40 hidden under the upper end portion 42 is exposed towards the nozzle 22 and is subjected to the spray from the nozzle 22 . Further, the abutment pipe 30 has a circular cross section, and the upper end portion 42 of the crop 40 is the abutment pipe 3
Since it collides with the periphery of 0, the pain caused by the collision is avoided.

FIG. 4 shows a triangular pyramid-shaped abutting body 44 on the abutting pipe 30.
Figure 5 shows the structure in which the
It is a V arrow view of a figure. The triangular pyramid-shaped abutment body 44 is fitted into the abutment pipe 30 with the bottom facing backward and one side facing upward, and has a front end apex 46 and a lower end apex 48.
A ridgeline 49 connecting the two extends diagonally. bolt 5
0 is inserted into the triangular pyramid-shaped contact body 44 from above and screwed onto the contact pipe 30 to form the triangular pyramid-shaped contact body 44.
is removably fixed to the contact pipe 30, and the lock nut 52 prevents the bolt 50 from loosening. In this embodiment, the triangular pyramid-shaped abutment body 44 abuts against the triangular pyramid-shaped abutment body 44 of the crop 40 with the front end apex 46 and the bottom end apex 48 directed forward and downward, respectively, so that the upper end portion 42 It is bent forward and to the left and right to expose the lower portion of the upper end portion 42 toward the nozzle 22, thereby allowing the spray from the nozzle 22 to better adhere to the portion below the upper end portion 42.

FIG. 6 is a diagram showing a structure in which the rollers 54 are attached to the contact pipe 30, and FIG. 7 is a view taken along the arrow in FIG. The roller 54 is made of an elastic material such as sponge, has a shape like the ball of an abacus, in which the bottom surfaces of two truncated cones are joined, and is rotatably fitted into the center boom 18 or the side boom 20. Two collars 56 are attached to the center boom 18 or side boom 20 on either side of the roller 54.
center boom 1 with the fixing bolt 58.
8 or fixed to the side boom 20, and the roller 54
This prevents axial displacement. As the roller 54 collides with and contacts the upper end portion 42 of the crop 40,
Forces are prevented from being applied to the crop 40 that would rotate and drag the upper end portion 42 of the crop 40. Also,
The roller 54 is elastically deformed upon collision with the upper end portion 42 of the crop 40 and
2 to reduce the impact force of the roller 54 on the roller 54.

FIGS. 8 and 9 are views showing a structure in which the center boom 18, the side booms 20, and the nozzle 22 are in a different positional relationship from that shown in FIG. 1, etc., from the side and from above. In this embodiment, the center boom 18
The side boom 20 is set at the same height as the abutting pipe 30 in FIGS. 1 and 2, and has a circular cross section. The stay 60 is the center boom 18
It extends obliquely upward toward the rear of the side boom 20, and is welded to the center boom 18 and the side boom 20 at the front end. The nozzle pipe 34 is connected to the center boom 18 and the side boom 2.
0, and is fixed to the lower surface of the rear end of the stay 60. As a result, the plurality of nozzles 22 are connected to the center boom 18 and the side boom 20.
The center boom 18 and the side booms 20 are arranged parallel to each other.

In the embodiment of FIGS. 8 and 9, the center boom 18 and side booms 20 abut the upper end portion 42 of the crop 40 and bend the upper end portion 42 as the boom sprayer 10 moves forward. The nozzle 22 is
Since it is located obliquely above the rear of the center boom 18 and the side booms 20, the portion of the crop 40 hidden under the upper end portion 42 is exposed toward the nozzle 22 due to the bending of the upper end portion 42, and the nozzle 2
The spray from 2 is also deposited. The upper end portion 42 of the crop 40 includes a center boom 18 and a side boom 20.
Since it comes into contact with the circular circumferential surface of the center boom 18 and the side booms 20, the contact with the center boom 18 and the side booms 20 is alleviated and damage is prevented.

[Effect of idea]

In the devices of claims 1 and 6, the abutment portion or the boom advances diagonally downward in front of the nozzle ahead of the nozzle, bends the upper end of the object to be spread, and hides under the upper end of the object to be spread. expose the part facing the nozzle. Therefore, the spray from the nozzle properly adheres to the desired portion of the object to be sprayed, and it is possible to obtain good spraying of the chemical solution.

In the inventions of claims 2 and 7, the abutment portion or boom has a circular cross-section, so that the upper end portion of the object to be scattered does not abut against a corner, thereby avoiding damage to the object to be scattered.

In the invention of claim 3, since a pyramid whose apex points forward and downward is used as the abutting part, the upper end of the object to be sprayed is bent forward and to the left and right, and the lower part of the upper end is bent toward the nozzle. This allows the spray from the nozzle to more appropriately adhere to the portion below the upper end portion.

According to the fourth aspect of the present invention, since the roller rotates by coming into contact with the upper end portion of the object to be spread, it is possible to prevent the upper end portion of the object to be spread from being bent, which would damage the object.

In the fifth aspect of the present invention, since the roller is elastically deformed by contact with the object to be spread, the collision of the roller with the object to be spread is alleviated, and the object to be spread can be protected.

[Brief explanation of the drawing]

The drawings relate to an embodiment of this invention, and FIGS. 1 and 2 are views showing the positional relationship between the center boom, side booms, and contact pipes from the side and above, and FIG.
The figure is a view of the boom sprayer from the rear, Figure 4 is a diagram showing the structure in which a triangular pyramid-shaped contact body is attached to the contact pipe, Figure 5 is a view taken from the direction of the arrow in Figure 4, and Figure 6 is a diagram showing the structure in which the rollers are attached to the abutment pipe, Figure 7 is a view taken in the direction of the arrows in Figure 6, and Figures 8 and 9 show the structure in which the center boom, side boom, and nozzle are shown in Figure 1, etc. FIG. 4 is a view showing the structure in a different positional relationship from the side and from above. 10... Boom sprayer, 18... Center boom (boom), 20... Side boom (boom), 22... Nozzle, 30... Contact pipe (contact part), 40... Crop (spreading material) , 42... Upper end portion, 44... Triangular pyramidal contact body (contact portion, pyramid), 54... Roller (contact portion).

Claims (1)

[Claims for Utility Model Registration] (1) Booms 18, 20 that extend horizontally at right angles to the direction of travel, and a plurality of booms 18, 20 that are directed downward and are arranged along the booms 18, 20 and eject a chemical solution. a nozzle 22, and the boom 18,
The upper end portion 42 of the bendable object 40 disposed diagonally downward in front of the nozzle 20 is bent by contact, and the portion below the upper end portion 42 is connected to the nozzle 22 .
A boom sprayer characterized in that it has abutting portions 30, 44 exposed to spray from the sprayer. (2) The contact portions 30 and 44 are connected to the boom 1.
Boom sprayer according to claim 1, characterized in that it extends substantially parallel to 8, 20 and has a circular cross section. (3) The boom sprayer according to claim 1, wherein the contact portions 30, 44 are pyramids 44 whose apexes are directed forward and downward. (4) The boom sprayer according to claim 1, wherein the contact portions 30, 44 are rotatably supported rollers 54. (5) The boom sprayer according to claim 4, wherein the roller 54 is elastic and deforms elastically when it comes into contact with the object 40 to be spread. (6) Booms 18, 20 that extend horizontally at right angles to the direction of travel and bend the upper end portions 42 of the bendable objects 40 by contacting them; and The upper end portion 4 is arranged substantially parallel to the booms 18, 20 obliquely above the booms 18, 20.
2. A boom sprayer comprising a plurality of nozzles 22 for ejecting a chemical solution to a portion exposed above by bending the boom sprayer 2. 7. The boom sprayer according to claim 5, wherein the booms 18, 20 have a circular cross section.