JPH08243451A - Self-propelled spray vehicle - Google Patents

Abstract

PURPOSE: To make it possible to spray a spray liquid equally to a crop regarding a self-propelled vehicle which travels back and forth on a path between fields and sprays a spray liquid such as an insecticide to the crop in a green house. CONSTITUTION: In this self-propelled spray vehicle which travels back and forth on a path between fields and sprays a spray liquid to a crop planted in the ridge from an atomization nozzle, an atomization pipe 11 consisting of atomization nozzles 13a, 13b, 13c, 13d arranged in a multistage, a means 39 for vertical activation 39 which moves the atomization pipe 1-1 arranged almost vertically in a longitudinal direction, and a control means 66 which switches the atomization pipe 11 from an asending position to a descending position or vice versa when the self-propelled spray vehicle travels back and forth, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled spraying vehicle that reciprocates (forwards and backwards) through a furrow passage in a house or the like and sprays a spray liquid such as a chemical liquid on a crop. The present invention relates to a self-propelled spraying vehicle that enables even spraying of.

[0002]

2. Description of the Related Art In a self-propelled spraying vehicle that sprays a spraying liquid such as a chemical liquid on a crop by reciprocating in a furrow passage in a house or the like, a plurality of nozzles are arranged at appropriate intervals on a nozzle pipe extending substantially vertically. It is attached to the left and right. A conventional spreading vehicle of this type is described, for example, in Japanese Utility Model Laid-Open No. 4-22062. The configuration will be described below with reference to FIGS.

6 and 7 are a side view and a plan view showing the self-propelled spreading vehicle 10 together with the main internal structure, and FIG. 8 is a VI of FIG.
FIG. 6 is a view showing the nozzle pipe 74 from the II direction. The self-propelled spraying vehicle 10 includes a front tire 14 and a rear tire 16 at the bottom of the main body 12.
It is possible to move forward (forward) and reverse (reverse) by driving them. The motor 18 that can rotate forward and backward is the main body 12
It is arranged at the center of the lower part of the
It is transmitted to the intermediate shaft 26 via the sprocket wheel 20, the chain 22, and the sprocket wheel 24.
Is transmitted to the front axle 34 through the sprocket wheel 28, the chain 30 and the sprocket wheel 32, and is transmitted to the rear axle 42 through the sprocket wheel 36, the chain 38 and the sprocket wheel 40. It

A front tire 14 and a rear tire 16 are integrally rotatably attached to the left and right ends of the front axle 34 and the left and right ends of the rear axle 42, respectively, and a sprocket wheel is also provided.
There is a one-way clutch between 32 and the front axle 34, and between the sprocket wheel 40 and the rear axle 42, and when the motor 18 is in the normal rotation, only the front tire 14 serves as the driving wheel, and When the traveling type spray vehicle 10 travels forward and the motor 18 rotates in the reverse direction, only the rear tire 16 serves as a driving wheel, and the self-propelling spray vehicle 10 moves backward.

The rotary power of the intermediate shaft 26 is transmitted to the rotary shaft of the hose reel 50 in the main body 12 through the sprocket wheel 44, the chain 46 and the sprocket wheel 48.
The torque limiter 52 disconnects the sprocket wheel 48 and the rotating shaft of the hose reel 50 when an excessive driving torque is applied to the hose reel 50 due to the restraint of the rotation of the hose reel 50. The rotational power of the rotary shaft of the hose reel 50 is transmitted to a pressure contact roller (not shown) at the lower end of the rear end of the main body 12 via a sprocket wheel 54, a chain 56 and a sprocket wheel 58. The pressure contact roller can rotate the synchronous hose 50 in synchronization with the hose reel 50, so that the spray hose 60 can be fed into the main body 12 and unwound from the main body 12.The spray hose 60 is wound around the hose reel 50 at one end. It is free and is connected at the other end to the outlet of a power sprayer arranged at the end of the furrow passage. The battery 62 is installed in the front part of the main body 12 and
18, a motorized valve 64 described later, a control device 66, and a motor 68
It supplies electric power to various electric devices of the self-propelled spraying vehicle 10.

The pipe line 70 is connected to the hose reel 50 at one end side through a universal joint 72, is supplied with spray liquid from the end part of the spray hose 60, and projects to the front of the main body 12 at the other end side. The motor-operated valve 64 is arranged in the middle of the pipeline 70 to open and close the pipeline 70. The nozzle pipe 74 is arranged in the front part of the main body 12, extends in the vertical direction, and is connected at its lower end to the universal joint 72 at the other end of the conduit 70. The nozzles 76a and 76b are
The nozzle pipes 74 are attached to the nozzle pipe 74 so as to be paired, directed leftward and rightward in the figure, and equidistant in the vertical direction. As shown in FIG. 6, the nozzles 76a, 76b
The vertical direction, that is, the spray angle is different, and the nozzle 76a is slightly upward, whereas the nozzle 76b is oriented substantially horizontally.

A nozzle pipe rotating device 78 is attached to the upper part of the front end of the main body 12 and controls the rotation of the nozzle pipe 74 around the axis. The bumper 80 is located at the lower front end of the self-propelled spraying vehicle 10, and the touch sensor 82 is fixed to the front side of the bumper 80. A pile is buried at a predetermined height on the terminal side of the furrow passage, and the self-propelled spreading vehicle 10 advances through the furrow passage to reach the position of the pile, and the touch sensor 82 collides with the pile. ,
Detects that the position of the pile has been reached. Control device 66
Is provided at the upper rear end of the main body 12, and the handle 86 projects rearward from the vicinity of the control device 66.

In the above structure, the self-propelled spraying vehicle 10 drives the front tire 14 by the forward rotation of the motor 18 to move forward in the furrow passage. On the outward route of the self-propelled spraying vehicle 10 in the furrow passage, the crop planted in the furrow on the left side of the furrow passage can be sprayed with spray liquid from a diagonally lower position by the nozzle 76a, while The crops planted in the ridges are sprayed with the spray liquid in a substantially horizontal direction by the nozzle 76b.

When the self-propelled spreading vehicle 10 reaches the end side of the furrow passage and the bumper 80 collides with the pile, the motor 18 stops rotating, the self-propelling spreading vehicle 10 stops, and the electric valve 64 is connected to the pipeline. By closing 70, the spraying of the spray liquid from the nozzles 76a and 76b is temporarily stopped. The motor 68 then rotates, and the rotation of the motor 68 is transmitted to the nozzle pipe 74 via the gears 88, 86 and the collar 90, and the nozzle pipe 74 rotates about its axis. When the nozzle pipe 74 rotates 180 °, the cam 92 contacts the limit switch 94 and the rotation of the motor 68 stops. As a result, the nozzles 76a and 76b are reversed in the left-right relationship with respect to the main body 12, and the nozzles 76a and 76b are oriented obliquely in the direction opposite to the forward direction.

After this, the motor 18 reversely rotates, and the self-propelled sprayer
10 moves back in the furrow passage, and the motor-operated valve 64 opens the pipe 70. As a result, spraying of the spray liquid from the nozzles 76a and 76b is restarted, and on the return path of the self-propelled spray vehicle 10, the crops on the left and right sides of the self-propelled spray vehicle 10 in the traveling direction (the self-propelled spray vehicle 10 When moving forward, the crops on the right and left sides in the advancing direction are sprayed with spray liquid from the nozzles 76b and 76a, respectively.
Unlike the outward path of No. 1, the direction is diagonally downward and almost horizontal. In this way, the crop is sprayed with the chemical solution from different angles on the outward path and the return path of the self-propelled spraying vehicle 10, and the chemical solution is evenly attached to the entire crop. Further, since the nozzles 76a, 76b are oriented obliquely in the backward direction of the self-propelled spraying vehicle 10, the chemical solution is ejected from the nozzles 76a, 76b in the obliquely forward direction of the traveling direction of the self-propelled spraying vehicle 10.

[0011]

In the conventional self-propelled spraying vehicle having the above-mentioned structure, the nozzle pipe 74 is rotated so that the nozzles can be moved forward and backward in the self-propelled spraying vehicle.
By spraying spraying liquid to crops from different spray angles from 76a and 76b, uneven spraying can be suppressed, spraying effect can be enhanced, and spraying liquid can be partially concentrated or unsatisfactory. Although a certain effect is given to prevent the resulting harmful effects, the present invention intends to further enhance such an effect by another technical means.

[0012]

In the self-propelled spraying vehicle according to claim 1 of the present invention, the self-propelled sprayer is configured to reciprocate in the furrow passage and spray the spraying liquid from the spray nozzle onto the crop planted in the furrow. In the spray car, the spray nozzle (13a, 13b, 13c, 13
d) Multi-stage spray pipe (11), vertically moving this spray pipe (11) vertically arranged vertically moving means (39), the self-propelled type It comprises a control means (66) for switching the spray pipe (11) between an ascending position and a descending position when the spraying vehicle goes forward and backward.

According to a second aspect of the present invention, there is provided a self-propelled spreading vehicle according to the first aspect.
Spray nozzles (13a, 1) of the spray pipe (11) formed in multiple stages
The mounting pitch (P) of 3b, 13c, 13d) is fixed, and the stroke amount between the ascending position and the descending position of the spray pipe is approximately half of the mounting pitch (P).

According to a third aspect of the present invention, in the self-propelled spreading vehicle, the self-propelled spreading vehicle according to the first aspect is provided.
The control means (66) includes a reciprocating motion switching sensor (82) that senses a trailing end position of the self-propelled spraying vehicle to instruct a backward movement of the self-propelled spraying vehicle.

According to a fourth aspect of the present invention, there is provided the self-propelled spreading vehicle according to the first aspect,
A control means (6) for operating the reciprocating motion switching sensor (82) and switching the spray pipe (11) between a raised position and a lowered position.
It is related to the operation of 6).

[0016]

In the self-propelled spraying vehicle according to claim 1, when spraying the spraying liquid from the spray nozzles (13a, 13b, 13c, 13d) on the crops planted in the ridges while reciprocating in the ridge passage, The spray nozzle (13a, 1a
The spray pipe (11) having multiple stages (3b, 13c, 13d) is switched between the ascending position and the descending position to eliminate uneven spraying on the crop.

In the self-propelled spreading vehicle according to claim 2,
The pitch of the spray nozzle (13a, 13b, 13c, 13d) on the spray pipe (11) is fixed, and the stroke amount between the ascending position and the descending position of the spray pipe (11) is adjusted. Approximately half of the mounting pitch (P) ensures more even application to the crop.

In the self-propelled spreading vehicle according to claim 3,
A reciprocating motion switching sensor (82) for detecting the trailing end position of the self-propelled spraying vehicle is provided, and the operation of the sensor (82) switches the self-propelled spraying vehicle from forward to backward.

In the self-propelled spreading vehicle according to claim 4,
The operation of the control means (66) for switching the spray pipe (11) between the raised position and the lowered position is operated by the reciprocating motion switching sensor (8
In association with the operation of 2), when the self-propelled spraying vehicle reaches the end of its travel, the spray tube (11) is moved up and down.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in FIGS. 1 to 5. In the drawings, the conventional examples shown in FIGS. The same or equivalent parts as those described above are designated by the same reference numerals, and the description of the structure and operation thereof will be omitted (hereinafter, the portions unique to the present invention will be denoted by odd reference numerals).

The spray pipe 11 shown in the left end portion of FIGS. 1 and 2 and FIG. 3 has a plurality of (4 in the illustrated example) spray nozzles 13a, 13b, 13c in a multi-stage manner in the length direction thereof. 13d is provided, and the attachment pitch p of these spray nozzles 13a to 13d is constant.

The details of the vertically moving part 17 for vertically moving the spray pipe 11 arranged in a substantially vertical shape will be described with reference to FIGS. 4 and 5, and it is fixed to the main body 12 with the bolt 19. A guide rail 23 having a substantially C-shaped cross section is formed on the guide member 21, and the flange 29 at the end of the protruding portion 27 of the sliding member 25 that slides up and down in the guide rail 23 is described above. The spray pipe 11 is fastened and fixed with the bolt 33 via the step 31.

On the other hand, a reciprocating member 41 of an electric cylinder 39, which is fixed to the main body 12 by a bolt 37 via a step 35 and serves as a vertical moving means, is connected to the sliding member 25 by a pin 43. The electric cylinder 39 is operatively connected to the control device 66.

The vertically moving portion 17 of the spray pipe 11 having the above-mentioned configuration
In the self-propelled spreading vehicle 10 equipped with
Is placed at the start point of the furrow, the end of the hose 60 is appropriately fixed to a water source (pump discharge port), and a start switch (not shown) of the spraying vehicle 10 is thrown in to serve as a control means. The motor 18 is started via the control circuit of the control device 66, the self-propelled spraying vehicle 10 starts moving forward (forward), and at the same time, the electric valve 64 is opened, and the spraying liquid passes through the pipe 70. The spray nozzles 13a to 13d of the spray pipe 11 are guided to these spray nozzles 13a to 1d.
It is sprayed on the crop from the 3d nozzles 15a and 15b.

At this time, the hose 60 is pulled out above the ridges in accordance with the progress of the self-propelled spreading vehicle 10, and when the self-propelling spreading vehicle 10 reaches a predetermined position between the ridges, the hose 60 is in advance. The bumper 80 hits the installed pile (not shown), the switch enters the touch sensor 82 as a reciprocating motion switching sensor, and a signal is sent to the control device 66. -The switch 18 is stopped and the electric valve 64 is closed.

Immediately thereafter, the electric cylinder 39 is operated to lower (or raise) the height of the spray pipe 11, so that the spray pipe 11 moves to the lowered position (or raised position) and at the same time, the control device is restarted. By the motor 66, the motor 18 starts to rotate in the reverse direction, and the self-propelled spreader vehicle 10 starts to move backward (reverse), and the hose 60 is wound around the hose reel 50 at the same time. During this time, the spray liquid sprayed from the spray nozzles 13a to 13d of the spray pipe 11 that has moved to the lowered position (or the raised position) has a height different from that when the self-propelled spray vehicle 10 travels. Due to the position of these spray nozzles 13a to 13d, and practically, the stroke amount of about half of the pitch between the spray nozzles 13a to 13d is between the rising position and the falling position of the spray pipe 11. By setting to, the spraying liquid is sprayed to the crops at different places, and duplicate spraying can be avoided.

When the self-propelled spraying vehicle 10 returns to the original starting point, the stop switch is turned on to stop the motor 18 by the control device 66, and the electric valve 64 is turned on. To be closed. Immediately thereafter, the electric cylinder 39 is activated, the spray pipe 11 returns to the initial state, that is, the raised position (or the lowered position), and the work of one stroke is completed.

[0028]

According to the self-propelled spraying vehicle having the vertically moving portion of the spray tube having the above-described structure of the present invention, the height of the spray nozzle is changed between forward and backward spraying in reciprocating spraying. This makes it possible to cover the spray target so that uneven spraying does not occur, and it is possible to minimize the blind spot where the spray liquid is not applied, and there is less chemical damage because it is not repeatedly sprayed at the same place. In addition to the high control effect due to the high degree of uniform spraying, the economical effect that the spray liquid drop amount can be reduced can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a configuration of a self-propelled spreading vehicle to which the present invention is applied.

FIG. 2 is a plan view of a portion shown in FIG.

FIG. 3 is a view of a part of FIG.

FIG. 4 is a perspective view of a main part of the present invention.

5 is a side view showing a partial cross section of the portion shown in FIG. 4. FIG.

FIG. 6 is a side view of a conventional example.

FIG. 7 is a plan view of the portion shown in FIG.

8 is an enlarged cross-sectional view of a part of the portion shown in FIG.

[Explanation of symbols]

 11 Spray pipes 13a, 13b, 13c, 13d Spray nozzle 39 Vertical movement means (electric cylinder) 66 Control means (control device) 82 Touch sensor (reciprocation switching sensor)

Claims (4)

[Claims] 1. A self-propelled spraying vehicle for spraying spray liquid from a spray nozzle onto a crop planted in a ridge by reciprocating through a ridge passage, and the spray nozzles (13a, 13b, 13c, 13d) are arranged in multiple stages. A spray pipe (11) provided with the vertical movement means (39) for vertically moving the spray pipe (11) arranged substantially vertically in the longitudinal direction thereof.
And a control means (66) for switching the spray pipe (11) between an ascending position and a descending position when the self-propelled spraying vehicle travels forward and backward. . 2. The spray nozzle (13a, 13b, 13c, 13d) of the spray pipe (11) formed in a multi-step manner has a fixed mounting pitch (P), and the spray pipe (11) is raised and lowered. The self-propelled spreading vehicle according to claim 1, wherein a stroke amount between the position and the position is approximately half of the mounting pitch (P). 3. The reciprocating motion switching sensor (82), wherein the control means (66) senses a trailing end position of the self-propelled spraying vehicle to instruct a backward movement of the self-propelled spraying vehicle. The self-propelled spreading vehicle according to claim 1. 4. The operation of the reciprocating motion switching sensor (82) is associated with the operation of a control means (66) for switching the spray pipe (11) between a raised position and a lowered position. Self-propelled spreading vehicle as described.