JPH09314008A - Speed sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to uniformly spray a medicinal liquid by controlling a spraying rate regulating means in such a manner that the spraying rate of the medicinal liquid per unit area on a swiveling side is decreased and the spraying rate of the medicinal liquid per unit area on the side opposite to the swiveling side is increased according to the swiveling direction and cut angle of a handwheel detected by a swiveling and cut angle detecting means. SOLUTION: The medicinal liquid is fed into stationary and movable main pipe nozzles 3, 4 and the air sucked from an air tunnel 7 is blown toward the nozzles, by which the medicinal liquid is atomized and ejected in a radial form in the case the medicinal liquid spraying is executed in a field. When such speed sprayer executes the medicinal liquid spraying while swiveling, the amt. of the medicinal liquid per unit area sprayed to the swiveling side increases and the amt. of the medicinal liquid on the opposite side decreases. If the medicinal liquid spraying is, thereupon, executed while the sprayer is swiveled, for example, leftward, electrically driven actuators 14, 15 are operated according to the cut angle of the handwheel to turn the left side movable nozzle 4a (swiveling side) in an erecting direction and the right side movable nozzle 4b (the side opposite to the swiveling side) in a horizontal direction, by which the medicinal liquid to be sprayed is controlled to the state of the amts. unequal on the right and the left.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed sprayer, and more specifically, to an air sucked from a wind tunnel while sending a chemical solution to a nozzle having a plurality of openings provided in a circumferential direction of a main body of the apparatus to eject the chemical solution. The present invention relates to a speed sprayer capable of spraying in the direction of spraying a chemical solution to atomize the chemical solution and spray it radially.

[0002]

2. Description of the Related Art Conventionally, in a field such as an orchard, a speed sprayer used for spraying a chemical solution stores the chemical solution in a tank and uses it as a nozzle having a plurality of openings provided in the circumferential direction of the apparatus main body. The chemical liquid is fed and jetted from each opening, and the air sucked from the wind tunnel is jetted in the chemical liquid jetting direction to atomize the chemical liquid and spray it radially.

The spraying direction of the chemical liquid of the speed sprayer is performed by the operator by adjusting the open / closed states of the switching valves corresponding to the respective nozzles on the left side, the upper side, and the right side, which are provided in the operating portion of the driver's seat. For example, when the speed sprayer passes between the fruit trees, all the valves are opened and the chemical solution is sprayed radially, but when it is desired to spray the chemical solution partially around the orchard, it corresponds to each nozzle described above. Among the valves, the switching valve corresponding to the left nozzle was closed, and the switching valve corresponding to the right nozzle was closed.

[0004]

In the above-mentioned conventional speed sprayer, when the chemical solution is sprayed while traveling in the orchard, not only straight running but also S-curve, right-angled turn, U-turn, etc. are used depending on the situation. It is necessary to spray chemicals while driving. However, when the speed sprayer sprays the chemical solution while curving, the chemical solution per unit area sprayed on the turning side becomes thicker and the chemical solution on the opposite side becomes thinner. Therefore, unevenness occurs in the amount of the liquid medicine applied to the entire orchard. This results in insufficient disinfection for fruit trees, waste of agricultural chemicals for workers, and increased production costs.

On the other hand, it is also possible to increase the number of openings provided in the nozzle so as to partially open and close the nozzle or intermittently open and close the nozzle. However, in order to open and close each nozzle, it is necessary to provide a large number of switching valves to open and close them, and the operability is poor.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a speed sprayer with good operability, which is capable of uniformly spraying a chemical solution regardless of the running condition in the field.

[0007]

The present invention has the following constitution in order to achieve the above object. That is, the speed at which a chemical solution is sent to a nozzle provided with a plurality of openings in the circumferential direction of the apparatus main body and ejected from each opening, and the air sucked from a wind tunnel is ejected in the chemical agent ejection direction to atomize the chemical solution and can be sprayed radially. In a sprayer, a turning angle detection means capable of detecting a turning direction and a turning angle of a handle of the speed sprayer, and a spray amount of a chemical liquid sprayed from the nozzle are adjusted from a left and right equal amount spray state to a left and right unequal amount spray state. And a spray amount adjusting means for reducing the spray amount of the chemical liquid per unit area on the turning side of the main body of the apparatus according to the turning direction and turning angle of the handle detected by the turning turning angle detection means, and a unit on the opposite side to the turning side. Control means for controlling the operation of the spray amount adjusting means so as to increase the spray amount of the chemical liquid per area.

The spray amount adjusting means includes a fixed nozzle provided in the circumferential direction of the apparatus body, a plurality of movable nozzles supported by a rotatable arm and arranged in parallel with the fixed nozzle, and the movable nozzle. An actuator that rotates an arm that supports the actuator, the control means actuating the actuator according to a turning direction or a turning angle of the handle detected by the turning angle detecting means, The turning side may be rotated in the standing direction, and the side opposite to the turning side may be horizontally rotated.
Further, the spray amount adjusting means controls a fixed nozzle provided in a circumferential direction of the apparatus main body, an increasing nozzle arranged in parallel on both left and right sides of the fixed nozzle, and a main opening / closing state of the fixed nozzle and the increasing nozzle. A switch and a plurality of actuators for opening and closing the fixed nozzle and adjusting the opening of the increasing nozzle, the control means detects the turning angle detection means with the main switch turned on. According to the turning direction and the turning angle of the handle, the actuator may be operated to control the opening of the increasing nozzle on the turning side and increase the opening on the side opposite to the turning side. Further, the spray amount adjusting means adjusts an opening degree of a fixed nozzle provided in a circumferential direction of the apparatus main body, a main switch for controlling an open / closed state of the fixed nozzle, and fixed nozzles provided on both left and right sides of the apparatus main body. And a plurality of actuators for controlling the turning off angle detecting means, in which the fixed nozzles provided on both the left and right sides of the main body are in a half-open state when the apparatus main body is in a straight state with the main switch turned on. According to the turning direction and the turning angle of the handle detected by, the actuator may be operated to control the opening degree of the fixed nozzle so as to expand from the half-open state only on the side opposite to the turning side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a chemical spray amount adjusting means and a control device of a speed sprayer.

(First Embodiment) First, a schematic structure of a speed sprayer will be described with reference to FIG. 1. The speed sprayer is configured to be capable of traveling by four-wheel steering or two-wheel steering by operating a steering wheel. The device body 1 of the speed sprayer is equipped with a chemical liquid tank 2 for storing a chemical liquid (disinfectant liquid), and the chemical liquid tank 2
Nozzles connected to are provided in the circumferential direction of the apparatus main body 1. A plurality of openings are formed in the nozzle in the circumferential direction, and a chemical solution is fed into the nozzle and ejected from each opening.

The apparatus body 1 is equipped with a power sprayer (not shown). By operating the power sprayer, the chemical solution stored in the chemical solution tank 2 is sent to the nozzle at a predetermined pressure, It circulates between the chemical liquid tank 2. In this embodiment, in addition to the fixed main pipe nozzle 3, a movable main pipe nozzle 4 as a spray amount adjusting means is arranged in parallel. The fixed main pipe nozzle 3 is divided into three parts such as a left fixed nozzle 3a, an upper fixed nozzle 3b, and a right fixed nozzle 3c in the circumferential direction of the apparatus body 1. The movable main pipe nozzle 4 has arcuate movable nozzles 4a and 4b attached to the tips of rotatable arms 5a and 5b.
The movable nozzles 4a and 4b are connected to the left fixed nozzle 3a and the right fixed nozzle 3c, respectively, and the chemical solution is fed from the fixed main pipe nozzle 3 side to the movable main pipe nozzle 4 side.
The arms 5a and 5b are connected to the tip ends of cylinder rods of rotary cylinders (hydraulic cylinders) 6a and 6b provided on the left and right, and rotate by operating the rotary cylinders 6a and 6b. The turning range of the arms 5a and 5b is interlocked with the steering wheel turning angle (steering angle) as described later. By changing the positions of the movable nozzles 4a and 4b, the left fixed nozzle 3 on the fixed main nozzle 3 side
a, The spray amount of the chemical liquid sprayed from the right fixed nozzle 3c is adjusted to be increased or decreased. That is, the movable nozzles 4a,
By rotating 4b, adjustment is made such that the normal left / right equal amount spraying state becomes a left / right unequal amount spraying state.

A wind tunnel 7 is provided on the rear end side of the apparatus with respect to the nozzle position, and a propeller 8 is rotatably attached to the rear end of the wind tunnel 7. The propeller 8 is rotationally driven by transmitting power from the power sprayer side, sucks air from the rear end of the wind tunnel 7 and blows it radially toward the nozzle along the tapered guide surface, and blows out from the opening of the nozzle. The chemical solution is atomized and can be sprayed radially. Further, in the operating portion on the driver's seat side, a main nozzle 9 connected to the power sprayer is equipped with a pressure gauge 10, and the main nozzle 9 has a left fixed nozzle 3a of the fixed main pipe nozzle 3 and an upper fixed nozzle. Pipe lines corresponding to the nozzle 3b and the right fixed nozzle 3c are connected, and the left fixed nozzle 3a, the upper fixed nozzle 3b, and the right fixed nozzle 3c are connected.
A valve 11a, a valve 11b, and a valve 11c are provided for selectively feeding the chemical solution to the valve.

Further, the speed sprayer is equipped with a stroke sensor 12 as a turning angle detecting means for detecting the turning direction and turning angle of the steering wheel.
The stroke sensor 12 detects, for example, the amount of protrusion of the cylinder rod of the hydraulic cylinder that steers the front wheels.
An opposed type cylinder is used as this hydraulic cylinder, and when one of the cylinder rods projects, the other is pulled in, so that the steering amount of the steering wheel can be linearly detected. According to this detection method, even in the case of a speed sprayer traveling by a crawler system,
The steering angle can be detected. In addition, the stroke sensor 1
Instead of 2, the steering unit may be provided with a sensor for detecting the steering angle.

Reference numeral 13 denotes a control device, which reduces the amount of chemical liquid sprayed per unit area on the turning side of the apparatus main body 1 according to the turning direction and the turning angle of the handle detected by the stroke sensor 12 so as to reduce the amount of chemical solution sprayed on the opposite side. The operation of the movable main pipe nozzle 4 is controlled so as to increase the amount of chemical sprayed per unit area.

Information on the turning direction and turning angle of the steering wheel detected by the stroke sensor 12 is input to the control device 13. Further, the control device 13 controls the left and right electric actuators 14, 1 according to the steering angle.
The rotary cylinders 6a and 6b are operated via 5 to rotate the arms 5a and 5b to change the positions of the movable nozzles 4a and 4b. The amount of chemical liquid sprayed per unit area by the right fixed nozzle 3c to the left and right sides is increased or decreased.

When spraying a chemical solution in the field using the speed sprayer constructed as described above, the operator actuates the power sprayer to cause the chemical solution stored in the chemical solution tank 2 to the main nozzle 9. And feed it at a predetermined pressure for circulation. Further, the valves 11a, 11b, 11c of the nozzles for spraying the chemical liquid are opened according to the arrangement of the fruit trees, and the chemical liquid is sent to the fixed main pipe nozzle 3 and further the movable main pipe nozzle 4. Further, the rotation speed of the propeller 8 which is transmitted from the power sprayer is increased to suck air from the wind tunnel 7 and blow it toward the nozzle. As a result, the chemical liquid ejected from the openings of the fixed main pipe nozzle 3 and the movable main pipe nozzle 4 is atomized and radially ejected to spray the chemical liquid on the surrounding fruit trees. At this time, the liquid chemicals sprayed from the left and right nozzles are sprayed in an equal amount on the left and right.

When the speed sprayer travels straight ahead and sprays the chemical solution, the left and right valves 11a and 11c can be evenly sprayed even when the valves are fully opened. The amount of chemical liquid per unit area sprayed on one side increases and the other side becomes thinner. Therefore, for example, when spraying the chemical liquid while turning left,
As shown in FIG. 1, the control device 13 controls the electric actuators 14 and 1 within the set rotation range according to the steering angle.
5, the left movable nozzle 4a (the turning side) is rotated in a standing direction, and the right movable nozzle 4b (the opposite side to the turning side) is horizontally rotated to spray the chemical liquid from both left and right nozzles. Is controlled so as to be in a state of spraying unequal amounts on the left and right. This makes it possible to reduce the amount of chemical liquid sprayed per unit area on the turning side and increase the amount of chemical liquid sprayed per unit area on the side opposite to the turning side.

According to the above construction, the speed sprayer traveling in the field sprays the chemical liquid per unit area on the fruit trees on both the left and right sides regardless of the traveling state such as the S-shaped curve, the left / right turn, or the U-turn. It is possible to make the spray amount uniform. Therefore, it is possible to effectively disinfect fruit trees and to eliminate wasteful use of chemicals, thereby contributing to reduction in production cost. Further, there is no need to perform an operation such as control of the amount of the chemical liquid ejected by opening and closing a plurality of valves, and the left and right movable nozzles 4a and 4b linearly rotate according to the turning angle of the handle, so the operability is good.

(Second Embodiment) Next, another embodiment of the speed sprayer will be described with reference to FIG. still,
The same members as those in the first embodiment will be designated by the same reference numerals and the description will be incorporated. In the first embodiment, the rotatable main pipe nozzle 4 is provided as the spray amount adjusting means. Instead of the movable main pipe nozzle 4, the left fixed nozzle 3a and the right fixed nozzle 3c of the fixed main pipe nozzle 3 are provided. On the other hand, the increasing main pipe nozzles 16a and 16b may be arranged in parallel.

Of the fixed main pipe nozzles 3, left and right fixed nozzles 3a and 3c and the increased main pipe nozzles 16a and 16 are provided.
The opening and closing of b is performed by the left and right electric actuators 17a and 17b and electric actuators 18a and 18b which are operated by the control device 13, respectively. Further, the upper nozzle 3b is opened and closed by the lever 11b because it is not necessary to adjust the amount of the chemical liquid sprayed according to the traveling state of the speed sprayer. Above left and right fixed nozzle 3
a, 3c and the left and right increasing main pipe nozzles 16a, 16b
The opening and closing of is controlled by the left and right main switches 19a and 19b. When the left and right main switches are OFF, the control device 13 causes the electric actuators 17a, 1
7b and the electric actuators 18a and 18b are not operated. Further, the control device 13 is configured such that the valve opening degree can be arbitrarily adjusted by, for example, a dial setting to adjust the amount of the chemical liquid ejected from the openings of the left and right increasing main pipe nozzles 16a and 16b. When both or either of the left and right main switches 19a and 19b are turned off, the valve for opening and closing the corresponding increase main pipe nozzle 16a and 16b is closed. The valve opening is set to a left-right half-open state (a left-right equal amount spraying state) when the apparatus body 1 is traveling straight ahead.

When the left and right main switches 19a and 19b are turned on, the control device 13 operates the electric actuators 17a and 17b to open the valve and send the chemical liquid to the fixed main pipe nozzle 3 so that the chemical liquid can be ejected. In addition, the electric actuators 18a, 18a,
b is actuated to control the increasing main pipe nozzles 16a and 16b from the half-opened state to narrow the swirling side and expand the side opposite to the swirling side so that the chemical liquid is sprayed to the left and right unequal amounts. This makes it possible to reduce the amount of chemical liquid sprayed per unit area on the turning side and increase the amount of chemical liquid sprayed per unit area on the side opposite to the turning side. In addition, the left and right main switches 19a,
When one-side spraying is stopped by 19b, either the left or right corresponding fixed nozzles 3a, 3c and the increased main nozzle 16a,
The chemical solution is not sprayed from 16b.

According to the above construction, the amount of the chemical liquid sprayed from the nozzle on the turning side is reduced and the amount of the chemical liquid sprayed from the nozzle on the opposite side to the turning side is increased according to the turning angle of the handle of the speed sprayer. Regardless of the running state, it is possible to make uniform the amount of chemical liquid sprayed per unit area on both left and right fruit trees.

(Third Embodiment) Next, another embodiment of the speed sprayer will be described with reference to FIG. still,
The same members as those in the first embodiment will be designated by the same reference numerals and the description will be incorporated. In this embodiment, the left and right fixed nozzles 3a and 3c of the fixed main pipe nozzle 3 as the spray amount adjusting means are used.
In addition, the increase nozzles 20a, 20b are integrally formed, and the valves of the left and right fixed nozzles 3a, 3c are opened and closed by the electric actuators 17a, 17b. The open / closed states of the left and right fixed nozzles 3a, 3c and the increasing nozzles 20a, 20b are controlled by the left and right main switches 19a, 19b.

Specifically, the left and right nozzles 3a, 3c are
The valve openings of the increasing nozzles 20a and 20b are arbitrarily adjusted by, for example, dial setting. In this embodiment, the left and right main switches 19a and 19b are in a half-opened state and are closed in a closed state. Further, the upper nozzle 3b is opened and closed by the lever 11b because it is not necessary to adjust the amount of the chemical liquid sprayed according to the traveling state of the speed sprayer.

Further, the controller 13 turns the main switches 19a and 19b on, and the fixed nozzles 3a and 3c on both the left and right sides of the fixed main pipe nozzle 3 are in a semi-open state (right and left etc.) when the apparatus main body 1 is in a straight-ahead state. Amount of sprayed). Further, when the device body 1 turns to the left or right, the electric actuators 17a, 17a,
17b is operated to fix the left and right fixed nozzles 3a, 3c.
And the valve opening degree of the increasing nozzles 20a, 20b is controlled so that only the side opposite to the turning side is changed from the half open state to the full open state (left and right unequal amount spraying state). The fixed main nozzle 3 is
When the speed sprayer travels straight and sprays the chemicals, the left and right fixed nozzles 3a and 3c have valves that are half open, so there is always spillage in the chemicals sent to each nozzle. Spray the chemical by fully opening only the nozzle on the side.

According to the above configuration, the amount of the chemical liquid sprayed from the nozzle on the opposite side to the turning side is increased in accordance with the steering angle of the handle of the speed sprayer. It is possible to make uniform the amount of chemical liquid sprayed per unit area to be sprayed. Further, in the case of this embodiment, the increase nozzle 2 is added to the existing fixed-side main pipe nozzle 3.
Since it is sufficient to add 0a and 20b, the manufacturing cost can be reduced.

The present invention is not limited to the above-described embodiment, but can be applied to a crawler type speed sprayer, and many more modifications can be made without departing from the spirit of the invention. Of course.

[0028]

As described above, the present invention is a unit in which a speed sprayer traveling in a field sprays on fruit trees on both left and right sides regardless of a traveling state such as an S-shaped curve, a left / right turn, or a U-turn. It is possible to make the amount of chemical liquid sprayed per area uniform. Therefore, it is possible to effectively disinfect fruit trees and to eliminate wasteful use of chemicals, thereby contributing to reduction in production cost. In addition, it is not necessary to open and close multiple valves to control the amount of chemical spray.
The amount of chemical sprayed from the left and right nozzles can be increased or decreased linearly according to the steering wheel turning angle, resulting in good operability.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a chemical spray amount adjusting means and a control device of a speed sprayer according to a first embodiment.

FIG. 2 is a block diagram showing a configuration of a chemical spray amount adjusting means and a control device of a speed sprayer according to a second embodiment.

FIG. 3 is a block diagram showing a configuration of a chemical spray amount adjusting means and a control device of a speed sprayer according to a third embodiment.

[Explanation of symbols]

1 Device Main Body 2 Chemical Liquid Tank 3 Fixed Main Pipe Nozzle 3a Left Fixed Nozzle 3b Upper Fixed Nozzle 3c Right Fixed Nozzle 4 Movable Main Pipe Nozzle 4a, 4b Movable Nozzle 5a, 5b Arm 6a, 6b Rotating Cylinder 7 Wind Tunnel 8 Propeller 9 Main Nozzle 10 Pressure Total 11a, 11b, 11c Valve 12 Stroke sensor 13 Control device 14, 15, 17a, 17b, 18a, 18b Electric actuator 16a, 16b Increase main pipe nozzle 19a, 19b Main switch 20a, 20b Increase nozzle

Claims (4)

[Claims] 1. A chemical solution is sent to a nozzle provided with a plurality of openings in a circumferential direction of an apparatus main body to be ejected from each opening, and air sucked from a wind tunnel is ejected in the chemical solution ejection direction to atomize the chemical solution and spray it radially. In a possible speed sprayer, a turning angle detection means capable of detecting a turning direction and a turning angle of a handle of the speed sprayer, and a spray amount of a chemical liquid sprayed from the nozzle from a left and right equal amount spray state to a left and right unequal amount spray state And a spray amount adjusting means for adjusting the turning angle and the turning angle of the steering wheel detected by the turning angle detecting means and the turning angle of the device main body to reduce the amount of chemical spray per unit area on the turning side, which is opposite to the turning side. Control unit for controlling the operation of the spray amount adjusting unit so as to increase the amount of the chemical liquid sprayed per unit area on the side. Ya. 2. The spray amount adjusting means includes a fixed nozzle provided in a circumferential direction of the apparatus main body, a plurality of movable nozzles supported by a rotatable arm and arranged in parallel with the fixed nozzle, and the movable nozzle. An actuator that rotates an arm that supports the rotating nozzle, the control means actuating the actuator according to the turning direction or turning angle of the handle detected by the turning turning angle detection means 2. The speed sprayer according to claim 1, wherein the turning side is rotated in the upright direction, and the side opposite to the turning side is horizontally rotated. 3. The spray amount adjusting means includes a fixed nozzle provided in a circumferential direction of the apparatus main body, an increasing nozzle arranged in parallel on both left and right sides of the fixed nozzle, and an open / closed state of the fixed nozzle and the increasing nozzle. And a plurality of actuators for opening and closing the fixed nozzle and for adjusting the opening of the increasing nozzle, the control means detecting the turning angle when the main switch is turned on. Depending on the turning direction and turning angle of the handle detected by the means, the actuator is operated to control the opening of the increasing nozzle on the turning side and to control the opening on the opposite side to the turning side to be widened. The speed sprayer according to claim 1, which is characterized in that. 4. The spray amount adjusting means includes a fixed nozzle provided in a circumferential direction of the apparatus main body, a main switch for controlling an open / closed state of the fixed nozzle, and opening of fixed nozzles provided on both left and right sides of the apparatus main body. A plurality of actuators for adjusting the degree of rotation, and the control means keeps the main switch turned on and keeps the fixed nozzles provided on both the left and right sides in a half-opened state when the apparatus main body is in a straight-ahead state, and turns off the swing. According to the turning direction and the turning angle of the handle detected by the angle detecting means, the actuator is operated to control the opening degree of the fixed nozzle so that only the side opposite to the turning side is wider than the half-open state. The speed sprayer according to claim 1.