JPH07213213A - Spraying machine - Google Patents

Abstract

PURPOSE:To obtain a spraying machine capable of increasing the spraying efficiency of agrochemicals, etc., by lowering the preset height of a spraying arm independent of the lateral inclination of a spraying apparatus. CONSTITUTION:This spraying machine is provided with a folding apparatus 13 to drive the right and left arms 10R, 10L of a spraying arm 10 between a working posture and a housing posture. Each of the right and left arm has a separate folding apparatus 13. The lateral inclination angle of the spraying apparatus 6 is detected by an inclination sensor 17. The inclination sensor 17 is interlocked with the folding apparatus 13 in such a manner as to reciprocatively move the right and left arms 10R, 10L in vertical directions at prescribed height based on the detection result of the inclination sensor 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear part of a traveling vehicle body to which a spraying device having a horizontally elongated spraying arm is mounted so as to be able to move up and down, and the spraying arm is extended to the left and right of the traveling vehicle body. A spreader provided with a folding device that can be driven in a retracted posture in which the left and right arm parts are bent upward with the middle part side as a fulcrum, for example, a chemical sprayer for spraying a herbicide or a pest control agent. Etc.

[0002]

2. Description of the Related Art Conventionally, a folding device in such a spreader has been constructed so that the spraying arm is switched only between two working postures and a retracted posture.
In the working posture, both the spraying device and the spraying arm are tilted in accordance with the lateral inclination of the traveling vehicle body due to the unevenness of the field or the sinking of the wheels.

[0003]

In order to spray herbicides, pest control agents and the like efficiently, it is preferable to spray the spray arms close to the ground and crops. However, in the above-mentioned conventional spraying machine, since the long spraying arm is also tilted according to the tilting of the spraying device, even if the vehicle body is tilted a little, the tip of the spraying arm may move up and down and contact the ground or crops. There is.
Therefore, conventionally, the height of the spray arm is set high so that the spray arm does not come into contact with the ground or crops even if the spray arm is slightly inclined. However, if set high, there is a problem that the medicine is scattered too much, and the spraying efficiency is lowered, and it is difficult to adjust the height of the spray arm.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spraying machine capable of lowering the set height of the spraying arm and increasing the spraying efficiency of medicines or the like, regardless of the lateral inclination of the spraying apparatus.

[0005]

In order to achieve the above object, the present invention is configured such that the folding device is configured for each of right and left sides, and an inclination sensor for detecting a left and right inclination angle of the spraying device is provided. Based on the detection result, the tilt sensor and the folding device are linked so that the left and right arm portions move up and down by a predetermined amount in a contradictory manner.

[0006]

That is, in accordance with the left and right inclination of the spraying device, one arm portion on the lower side of the inclination is bent upward by a predetermined amount, and the other arm portion on the upper side of the inclination is bent downward by a predetermined amount, thereby spraying. The arm can be prevented from coming into contact with the ground or crops, and the arm can always be maintained near a predetermined height.

[0007]

As described above, since the posture of the spraying arm can be kept substantially constant regardless of the inclination of the spraying device to the left and right, the set height of the arm can be lowered and efficient spraying can be performed. Moreover, according to the present invention, since the folding device originally provided in the spraying device is used instead of adding a new mechanism, it can be provided at low cost.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a chemical spraying machine which is an example of a spraying machine, in which a hydraulic cylinder 4 is provided at the rear part of a riding type vehicle 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 lifted and lowered is provided, and a drug spraying device 6 is provided on a work device connecting hitch 5a at the rear end of the link mechanism 5.
It is configured by connecting.

The chemical spraying device 6 is, as shown in FIG.
A machine frame 7 connected to the hitch 5a has a tank 8 for storing a chemical liquid such as a herbicide or a pest control agent, and a laterally long spray arm 10 in which a large number of chemical liquid spray nozzles 9 are arranged in parallel.
And a pump 11 for pumping the chemical solution in the tank 8 to the spray arm 10, a grounding float 12, and the like. Based on the vertical displacement detection of the grounding float 12, the hydraulic cylinder 4 in the lifting link mechanism 5 is operated. The height of the chemical spraying device 6 is controlled to be substantially constant.

The spray arm 10 is divided into three parts in the left-right direction, and is approximately equal to the lateral width of the traveling vehicle body.
It is composed of a central arm portion 10M that is fixed to and arm portions 10L and 10R provided on the left and right sides of the central arm portion 10M. The left and right arm portions 10L, 10R are swingably attached to both ends of the central arm portion 10M about the front-rear axis X, and both arm portions 10L, 10R are moved by a folding device 13 using a hydraulic cylinder. Three
A work posture that extends further to the left and right (shown by the solid line in FIG. 2),
A storage posture in which both arm portions 10L and 10R are bent upward around the front-rear axis X (shown by a chain double-dashed line in FIG. 2), and one of the arm portions 10L and 10R is in a working posture, and the other is about 30 ° upward. It is provided so that it can be driven in three states, including the folded work position and the work position.

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

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

Further, when the operation lever 14a is operated to the A position and the switch 16 provided on the guide plate 15 is operated to the ON side, the detection from the tilt sensor 17 provided on the machine frame 7 of the medicine spraying device 6 is performed. The left and right folding devices 13, 13 are operated based on the result, and the left and right arm portions 10L, 10R
It is designed to move 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 inclined due to the unevenness of the cultivator and the difference in the sinking of the left and right wheels, one of them is on the lower side of the inclination according to this inclination. The arm portion 10L is bent upward by a predetermined amount according to the inclination angle, and the other arm portion 10R which is the lower slope upper side is bent downward by the predetermined amount, so that the arm portions 10M, 10L, 10R have substantially the same height. By controlling so, the posture of the spraying arm 10 can be kept substantially constant.

[Other Embodiments] As the spraying machine, in addition to the chemical spraying machine shown in the above-mentioned embodiment, one spraying only water may be used. The folding device 13 is not limited to a hydraulic cylinder, but may be an air cylinder or an electric motor. As the spray arm 10, the left and right arm portions 10
It may have a two-division structure composed of only L and 10R.
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.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the spreader

[Figure 2] Rear view of the spreader

[Figure 3] Rear view of the spreader

FIG. 4 is a plan view of the main part

[Explanation of symbols]

 3 Travel Car Body 6 Spraying Device 10 Spraying Arm 10L Arm Part 10R Arm Part 13 Folding Device 17 Tilt Sensor

Claims (1)

[Claims] 1. A spraying device (6) equipped with a horizontally long spray arm (10) is attached to a rear portion of the traveling vehicle body (3) so as to be movable up and down, and the spraying arm (10) is attached to the traveling vehicle body (3). Of the left and right arm portions (10L), (10L) with the intermediate position side as a fulcrum.
R) is a spreader provided with a folding device (13) that can be driven in a stored posture in which the folding device (13) is separately configured on the left and right sides, and An inclination sensor (17) for detecting a left and right inclination angle is provided, and based on the detection result of the inclination sensor (17), the left and right arm portions (10L), (1
A spreader in which the inclination sensor (17) and the folding device (13) are linked so that the 0R) moves up and down by a predetermined amount.