JP2955462B2 - Wetland sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work posture in which a spraying device having a horizontally long spray arm is attached to the rear of a traveling vehicle body so as to be able to move up and down, and the spray arm is extended to the left and right of the traveling vehicle body. A spraying machine provided with a folding device that can be driven to a storage position in which the left and right arms are bent upward with the intermediate portion as a fulcrum, for example, a chemical spraying machine that sprays a herbicide, a pest control agent, and the like. Etc.

[0002]

2. Description of the Related Art Conventionally, a folding device in such a spraying machine is configured to switch a spray arm only between a working posture and a storage posture.
In the working posture, the spraying device and the spray arm are both inclined according to the left and right inclination of the traveling vehicle body due to unevenness of the field or sinking of the wheels.

[0003]

In order to spray a herbicide or a pesticide efficiently, it is preferable to spray the spray arm close to the ground or a crop. However, in the above-mentioned conventional spraying machine, the long spray arm also tilts in accordance with the tilt of the spraying device. Therefore, even if the vehicle body is slightly tilted, the tip of the spray arm may move up and down greatly and come into contact with the ground or crops. There is.
Therefore, conventionally, the setting height of the spray arm is increased so that the spray arm does not come into contact with the ground or the crop even if it is slightly inclined. However, if the height is set high, the medicine is scattered too much, and there is a problem that the spraying efficiency is reduced, and it has been difficult to adjust the height of the spray arm.

[0004] It is an object of the present invention to provide a sprayer which can lower the set height of a spray arm and increase the efficiency of spraying a medicine or the like, regardless of the lateral inclination of the spraying device.

[0005]

In order to achieve the above-mentioned object, the present invention provides a spraying apparatus provided with a laterally long spray arm extending to the left and right of a traveling vehicle body at the rear of the traveling vehicle body traveling on a plow. The device is mounted so as to be able to move up and down freely, and as the spray arm, the center arm part, the working posture protruding left and right outward and the storage posture bent upward can swing freely around the longitudinal axis. Providing a device having left and right arm portions attached to both ends respectively, and attaching a grounding float which is grounded to the spraying surface and detects vertical displacement with respect to the spraying surface of the spraying device, at the left and right center of the spraying device,
By raising and lowering the spraying device based on the detection of the vertical displacement of the grounding float, the height of the spraying device with respect to the ground is kept substantially constant, and an inclination sensor for detecting the left-right inclination angle of the spraying device is provided. A folding device for swinging the right and left arm portions up and down a predetermined amount reciprocally based on a detection result of the sensor and changing the left and right arm portions to a working posture and a storage posture is provided. I do.

[0006]

In other words, according to the left and right inclination of the spraying device, spraying is performed by bending one arm portion on the lower side of the inclination upward by a predetermined amount and bending the other arm portion on the upper side of the inclination downward by a predetermined amount. The arm can be prevented from contacting the ground and crops, and the arm can always be kept close to a predetermined height.

[0007]

As described above, since the attitude of the spray arm can be kept substantially constant regardless of the lateral inclination of the spraying device, the set height of the arm can be reduced and efficient spraying can be performed. Moreover, according to the present invention, a new mechanism is not added, but the folding device provided in the spraying device is originally used, so that the present invention can be provided at a low cost.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a medicine sprayer which is an example of a sprayer. A hydraulic cylinder 4 is provided at the rear of a riding type traveling body 3 having a pair of left and right front wheels 1, 1 and a pair of left and right rear wheels 2, 2. A link mechanism 5 that can be driven up and down is provided. A medicine spraying device 6 is attached to a working device connecting hitch 5a at the rear end of the link mechanism 5.
Are connected.

[0009] As shown also in FIG.
A machine frame 7 connected to the hitch 5a has a tank 8 for storing a chemical solution such as a herbicide or a pesticide, and a long spray arm 10 having a large number of chemical solution spray nozzles 9 arranged side by side.
And a pump 11 for pumping the chemical solution in the tank 8 to the spray arm 10, and a ground float 12. The hydraulic cylinder 4 in the lifting link mechanism 5 is operated based on the detection of the vertical displacement of the ground float 12. The height of the medicine spraying device 6 is controlled to be substantially constant.

The spray arm 10 is divided into three parts in the left-right direction, and has a width substantially equal to the width of the running vehicle body.
And an arm portion 10M provided on the left and right sides thereof. The left and right arm portions 10L and 10R are attached to both ends of a central arm portion 10M so as to be swingable around a front-rear axis X, and the both arm portions 10L and 10R are moved by a folding device 13 using a hydraulic cylinder. 3
The working posture (shown by the solid line in FIG. 2)
The retracted posture (shown by a two-dot chain line in FIG. 2) in which the two arm portions 10L and 10R are bent upward around the longitudinal axis X, and one of the two arm portions 10L and 10R in the working posture and the other approximately 30 ° upward It is provided so that it can be driven in three states, that is, the working posture at the time of the folded ridge.

The folding device 13 includes left and right arm portions 1.
0L and 10R, respectively, for driving the left and right folding devices 13 and 13 and for each arm portion 1
The start and stop of the spraying of the chemicals in each of 0M, 10L, and 10R are operated by a single operation lever 14a provided in the control unit 14 of the traveling vehicle body 3.

That is, as shown in FIG.
When 4a is moved to the position A on the guide plate 15, both arm portions 10L, 10R are both in the working posture, and the medicine is sprayed from all the arm portions 10M, 10L, 10R.
Further, when the operation lever 14a is operated to the position B, the spraying of the medicine from all the arm portions 10M, 10L, 10R is stopped, while both the arm portions 10L, 10R remain in the working posture. Next, when the operation lever 14a is operated to the position C, the medicine spraying of all the arm portions 10M, 10L, 10R is stopped, so that both the arm portions 10L, 1R are stopped.
0R are both switched to the storage posture. Further, when the operating lever 14a is operated to the D position or the E position, the left or right arm portion 10L, 10R is bent upward by about 30 ° and the bent arm portion 1 is bent.
The spraying of the medicine on the 0L and 10R sides is stopped, and the state is switched to a state suitable for spraying the medicine on the ridge.

When the operation lever 14a is operated to the position A and the switch 16 provided on the guide plate 15 is operated to the ON side, detection by the inclination sensor 17 provided on the machine frame 7 of the medicine spraying device 6 is performed. The left and right folding devices 13 and 13 are operated based on the result, and the left and right arm portions 10L and 10R are operated.
Is reciprocally moved up and down by the same amount.

That is, as shown in FIG. 3, when the traveling vehicle body 3 and the chemical spraying device 6 are tilted due to the difference between the unevenness of the cultivator and the sinking of the left and right wheels, one of the inclined lower sides according to the tilt. The arm portion 10L is bent upward by a predetermined amount according to the tilt angle, and the other arm portion 10R, which is inclined downward and upward, is bent downward by the predetermined amount, so that the respective arm portions 10M, 10L, and 10R have substantially the same height. With such control, the attitude of the spray arm 10 can be kept substantially constant.

[Other Embodiment] As a spraying machine, in addition to the medicine spraying machine shown in the above embodiment, a machine which sprays only water may be used. Folding device 13
Is not limited to a hydraulic cylinder, but may be an air cylinder or an electric motor. The inclination sensor 17 for detecting the left-right inclination of the spraying device 6 may be provided on the link mechanism 5 or the traveling vehicle body 3 side.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a sprayer.

FIG. 2 is a rear view of the sprayer.

FIG. 3 is a rear view of the sprayer.

FIG. 4 is a plan view of a main part.

[Explanation of symbols]

 Reference Signs List 3 traveling vehicle body 6 spraying device 10 spraying arm 10L arm portion 10R arm portion 13 folding device 17 tilt sensor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-194764 (JP, A) JP-A-64-67104 (JP, A) JP-A-2-21959 (JP, A) JP-A-7-107 46902 (JP, A) Japanese Utility Model Showa 57-178469 (JP, U) Japanese Utility Model Showa 62-178821 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01M 7/00 B05B 17 / 00

Claims (1)

(57) [Claims] 1. A rear part of a traveling vehicle body (3) traveling on a plow.
In addition, a laterally long, overhanging vehicle body (3)
Spraying device (6) with spray arm (10) can be moved up and down freely
And the central arm as the spray arm (10).
Part (10M), and the working posture projecting left and right outward
Swinging around the longitudinal axis (X) with the storage position folded upward
The left and right ends of the central arm (10M) can be moved freely.
Left and right arm parts (10L), (10
R) and the left and right sides of the spraying device (6).
In the center, the spraying surface is grounded and the spraying device (6)
Installation of a ground float (12) for detecting vertical displacement
Based on the vertical displacement of the ground float (12)
Spraying device by raising and lowering the spraying device (6)
(6) is configured to keep the ground height substantially constant;
An inclination sensor (1) for detecting a left-right inclination angle of the spraying device (6).
7), and based on the detection result of the tilt sensor (17),
With the left and right arms (10L) and (10R)
On the contrary, it swings up and down a predetermined amount, and the left and right arms
(10L) and (10R) are swung between the working posture and the storage posture.
Wetland dispersion with folding device (13)
Cloth machine .