JP3056370B2 - Chemical 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 chemical sprayer suitable for spraying a herbicide between furrows.

[0002]

2. Description of the Related Art As a chemical spraying vehicle of this kind, Japanese Utility Model 3
One described in Japanese Patent Publication No. 199559 is known. In this method, a chemical solution tank and a spray device are mounted on a cart with a push handle, and the spray device is attached to a wheel of the push cart, and engages with a star-shaped cam that rotates integrally with the wheel, and moves up and down. A chemical liquid pressure pump is reciprocally driven by a shaft reciprocating in a direction, and a plate-shaped or banner-shaped shield for defining a chemical liquid spray area is provided on both sides of a spray nozzle for spraying a chemical liquid downward.

[0003] This device is mainly used for spraying herbicides. However, it is difficult to slide the ground on which the vehicle is to run, or the amount of the chemical in the tank is reduced.
Alternatively, in the case of spraying a small amount of a chemical from the beginning, the wheels to drive the spray device may slip in the ridges, and may not be able to obtain a sufficient spray pressure, and the chemical sprayed from the spray nozzle. Has one spray nozzle,
The herbicide is mainly sprayed from one side of the weeds to be sprayed because the advancing progresses in the furrows while maintaining a predetermined angle downward, and the shaded portion on the opposite side to the spraying direction is used. Does not reach the medicinal solution, so that weeds may remain, and the herbicide is not sufficiently effective.

[0004] Further, in the conventional device, the weight of the chemical solution tank is sufficiently applied to the driving wheels for driving the spraying device, and a monocycle is used in order to prevent slipping. In order to move a unicycle with a high center of gravity in a stable state, a certain amount of power is required,
Furthermore, since the resistance caused by driving the pump is added, it takes a skill to uniformly spray the herbicide with this device, and it is difficult for an unfamiliar person to perform the operation and he / she tends to be tired.

[0005]

An object of the present invention is to disclose a chemical spraying vehicle that can stably run between furrows and that can surely spray a chemical solution to objects to be sprayed in a certain area separated by a shield. It is intended to be.

[0006]

A first gist of the present invention is to provide a chemical tank on a hand truck, a chemical pump for connecting the chemical tank to the chemical tank via a chemical conduit, an electric motor for driving the pump,
A battery for supplying electric power to the electric motor, and a pair of chemical injection nozzles connected to a discharge port of the chemical pump via a chemical conduit at predetermined intervals in the front-rear direction of the vehicle. A shield that defines a chemical solution injection area is vertically provided on both left and right sides of the pair of chemical solution injection nozzles, and the front chemical solution nozzle of the pair or more chemical solution injection nozzles is rearward. And the liquid chemical injection nozzle on the rear side is configured to be mounted forward and to inject the chemical liquid diagonally downward. In the chemical sprayer.

In the present application, the reference in the front-rear and left-right directions is based on the traveling direction of the hand cart. The chemical spraying vehicle defined in the first gist is provided with a pair of chemical spray nozzles in the front-rear direction and configured to inject diagonally downward, so that weeds and the like are sprayed on the front nozzle. The chemicals are sprayed from one side and sprayed from the other side by the nozzle on the rear side, so it is shaded by large weeds. In addition, the medicine can reliably reach and the effect of the herbicide can be ensured. Also, since the pumping mechanism for the chemical solution uses a motor driven pump driven by a battery, unlike the conventional pump driving mechanism using a cam mechanism, there is no unevenness in the spray amount, and even when working in a greenhouse, the internal combustion engine can be used. There is no danger associated with such exhaust gas.

According to a second aspect of the present invention, there is provided a chemical sprayer as defined in the first aspect, wherein the control rod extends horizontally by a predetermined length at a lower end of an adjusting rod provided vertically through the bogie frame. One end of the nozzle support arm is slidably fixed, one or more chemical liquid spray nozzles are fixed at or near both ends of the nozzle support arm, and the adjustment rod is fixed to the bogie frame so as to be vertically movable. And a chemical sprayer.

The reaching area of one or more chemical liquid spray nozzles is expanded downward. In particular, if an injection nozzle having a fan-shaped injection pattern is used as the chemical injection nozzle, the reach of the chemical in the left-right width direction can be freely set by adjusting the vertical position of the nozzle. The adjustment rod is
The spray area of the plurality of nozzles can be easily adjusted. In particular,
The effect is great when a plurality of pairs of injection nozzles are used to secure a wide left-right scatter area. Furthermore, if the base end of the support arm is slidably and fixedly mounted near the lower end of the adjustment rod,
The distance between the injection nozzles in the front-rear direction can be freely adjusted, and the state of spraying the chemical solution can be more easily adjusted, thereby enabling finer spraying.

According to a third aspect of the present invention, there is provided a chemical sprayer as defined in the first or second aspect, wherein the front wheel of the hand truck is one wheel and the rear wheels are three wheels which are arranged in the left-right direction. The supporting frame for supporting the left and right rear wheels of the rear wheels is fixed to the bogie frame so as to be movable and detachable in the left-right direction, and the central rear wheel is attached to the bogie frame. There is provided a chemical sprayer which is fixed vertically and detachably.

By lifting the center rear wheel upward, it is possible to run with only the front wheel and the left and right rear wheels, or to run with the front wheel and the center rear wheel with the left and right rear wheels removed. At the same time, since the width of the left and right rear wheels can be adjusted to fit the ridges by widening or narrowing, it is possible to cope with the wide ridge widths by stably transporting the heavy chemical liquid tank while traveling.

[0012]

FIG. 1 shows an embodiment of a chemical sprayer according to the present invention. A hand cart having a chemical solution tank 2 and a chemical solution pumping mechanism 3 mounted on a bogie frame 1 and having front wheels 4 and rear wheels 5 at both ends of the frame moves forward and backward by operating a hand push handle 6. . The chemical liquid pumping mechanism 3 includes a battery 31, a motor 32 driven by the battery 31, and a gear pump 33,
The suction port 34 of the gear pump 33 is connected to the bottom of the chemical tank 2 by a hose. One end of a hose is fitted to the discharge port 35 of the gear pump, and the other end of the hose 37 is connected to an opening / closing valve 36 provided near the grip on one side 6 a of the hand-push handle 6. Below, it is connected to a T-shaped distribution pipe 38. The battery 31 is located near the grip 6b on the other side of the push handle.
A switch 8 provided on an electric wire connecting the motor and the motor 32 is fixed.

A pair of hoses 39 connected to the distribution pipe 38
a and 39b are respectively connected to the chemical liquid injection nozzles 7a and 7b. As shown in FIG. 3, the chemical injection nozzles 7a and 7b have the same configuration, and a union nut 72 is provided at one end of a pipe 70 in which a chemical inlet 71 is opened.
3 is attached in a gas- and liquid-tight manner, and the closed end 74 of the nozzle tube 73 is
A substantially V-shaped cutout portion 75 is provided in the nozzle wall 73 to form a collision wall 76 having a slope of approximately 45 degrees with respect to the axial direction of the nozzle tube 73. A nozzle opening 77 communicating with the inside of the nozzle tube 73 is provided at the base of the collision wall 76. 78
Is a mounting hole drilled in a direction orthogonal to the nozzle tube, and 79 is a fixing screw. This chemical injection nozzle has a nozzle opening 77.
The chemical solution ejected from the nozzle is turned obliquely downward by the collision wall 74 and is sprayed in a fan-shaped ejection pattern.

The bogie frame 1 is provided with a spray control rod 20 made of a round bar and vertically penetrated therethrough. A fixing ring (not shown) is loosely fitted to the adjusting rod 20 in a bogie frame formed of a square pipe, and the other end of a bolt fixed to the fixing ring at one end protrudes from the side surface of the bogie frame. The wing nut 21 is screwed into this. Therefore, if the wing nut 21 is loosened, the spray adjusting rod 20 can move up and down and rotate freely.
It is fixed in that position. One end of the nozzle support arm 22 penetrates a portion where the spray adjusting rod 20 protrudes downward from the bogie frame, in a direction orthogonal to the adjusting rod 20, and a fixing screw 2
It is fixed at 3. At the free end 22a of the arm 22, a nozzle mounting rod 24 is suspended from the lower end position 20a of the adjusting rod 20 with its lower end 24a aligned. The vicinity of the lower end of the nozzle mounting rod and the vicinity of the lower end of the nozzle adjustment rod are respectively
Front chemical injection nozzle 7a and rear chemical injection nozzle 7b
Are fixed to the mounting holes 78 by fixing them with fixing screws 79. Reference numeral 25 denotes a fixing screw for fixing the mounting rod 24 to the arm 22.

A pair of shields 40, 40 are arranged so as to surround the pair of front and rear injection nozzles 7a, b from the left and right. The shielding body 40 has a shape in which an upper edge and left and right edges of a vertically arranged rectangular plate are bent in a right angle direction so as to surround the injection nozzle, and a winding shaft 41 is supported on the left and right edges, The shielding sheet 42 is wound and held on this. Reference numeral 43 denotes a weight piece serving also as a reinforcement attached to the lower end of the shielding sheet 42. The length of the shielding sheet 42 is adjusted by turning the take-up shaft 41 and turning the ring 44. 45 is a pressing spring for preventing free rotation of the winding shaft,
Reference numeral 46 denotes a holding bar for the shielding sheet. The shield 40 is
A pair of horizontal support arms 4 provided in the front-rear direction near the inner upper edge thereof
7 and 47 are held between the holding frame 48 and the bogie frame 1 which are fitted to the bogie frame from below,
Fixed. Reference numeral 48a denotes a threaded rod which engages with the holding piece, which penetrates the bogie frame and protrudes to the upper surface.
Is a tightening screw screwed into the protruding end.

The rear wheel 5 comprises three wheels 5a, 5b, 5c, as shown in FIG. Left and right rear wheels 5a
And 5b, L-shaped rear wheel support frames 51, 52 supporting the horizontal portions of the frames 51, 52 are fixed to the rear end of the bogie frame 1 vertically adjacent to each other,
And, it is slidably fitted into the guide holding tubes 11 and 12 composed of a pair of square pipes extending in the left-right direction,
By being fixed to a desired position at 14, it is supported in a left and right side-by-side state. The center rear wheel 5c is provided between the left and right rear wheels. In the support frame of the rear wheel 5c, a vertical guide holding tube 15 composed of a square pipe that opens vertically is fixed near the center of the guide holding tubes 11, 12, and a support rod 16 is vertically inserted therein. The fork 17 is movably fitted and fixed to the lower end of the support rod 16 to support the rear wheel 5c.

[0017]

[Effect] The above-mentioned chemical spraying car can be spread according to the ridge width to be sprayed.
The width of the shield 40 is adjusted by loosening the tightening screw 49 and then tightening again to fix it. In addition, the length of the shielding sheet is determined, and the height of the nozzle is determined by loosening the wing nut 21 and moving the adjusting rod 20 up and down according to the plant height. In this state, by grasping the handle and opening the on-off valve 36 first and pressing the switch 8, the herbicide is discharged from the nozzle 7 as shown in FIG.
From a and b, the fuel is injected obliquely downward in a fan-shaped injection pattern. The weed is sprayed with a chemical solution from the front side by the front nozzle and from the rear side by the rear nozzle 7b, so that the weeds in the spray area are sprayed.
Herbicides can be applied reliably even if the plant height is large or small.

When the ridge width is small, the rear wheels 5
a, 5b are removed from the guide holding tubes 11, 12, and only the central rear wheel 5c is used. If the ridge width is wide, the center rear wheel 5c is lifted up and fixed without touching the ground, and the vehicle runs only with the left and right rear wheels. Of course, the width of the left and right rear wheels is also adjusted according to the ridge width. Thus, regardless of the width of the ridge, the ridge can be stably run, and therefore, the state of spraying the chemical is also stabilized.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the overall configuration of a chemical sprayer according to an embodiment of the present invention as viewed from a side.

FIG. 2 is an explanatory view schematically showing a chemical spraying mechanism of the chemical spraying vehicle of FIG. 1;

FIG. 3 is an explanatory sectional view showing details of a configuration of a chemical liquid ejecting nozzle shown in FIG. 2;

FIG. 4 is an explanatory view showing a mounting structure of the chemical liquid injection nozzle of FIG. 2;

FIG. 5 is an explanatory view showing a mounting structure of a shield of the chemical sprayer of FIG. 1;

FIG. 6 is an explanatory view showing a mounting structure of a rear wheel of the chemical sprayer of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cart frame 2 Chemical tank 7a, b Chemical injection nozzle 8 Switch 31 Battery 32 Motor 34 Gear pump 37 Hose 38 Minute piping 40 Shield

Claims (4)

(57) [Claims] 1. A hand truck includes a chemical tank, a chemical pump for connecting to the chemical tank via a chemical conduit, an electric motor for driving the pump, and a battery for supplying electric power to the electric motor. A pair of chemical injection nozzles connected to the discharge port of the chemical pump via a chemical conduit are disposed at a predetermined interval in the front-rear direction of the vehicle, and the left and right of the pair of chemical injection nozzles A shield that defines a chemical solution injection area is vertically provided on both sides, and of the pair of or more chemical solution spray nozzles, the front chemical solution spray nozzle is:
It is mounted rearward and injects a chemical liquid obliquely downward, and the rear chemical liquid injection nozzle is configured to be mounted forward and inject the chemical liquid diagonally downward. Chemical sprayer. 2. One end of a nozzle support arm extending a predetermined length in a horizontal direction is slidably fixed to a lower end of an adjustment rod provided vertically penetrating a bogie frame, and a pair of chemical liquids is provided. The chemical sprayer according to claim 1, wherein the injection nozzle is fixed to both ends of the nozzle support arm or in the vicinity thereof, and the adjustment rod is fixed to a bogie frame so as to be vertically movable. 3. A hand truck has one front wheel and three rear wheels arranged in parallel in the left-right direction, and a supporting frame for supporting rear wheels on both left and right ends of the rear wheels is provided. The chemical spraying vehicle according to claim 1 or 2, wherein the vehicle is fixed to the bogie frame so as to be movable and removably in the left-right direction, and the central rear wheel is vertically movable and removably fixed to the bogie frame. 4. A pair of rear wheel support frame guide holding tubes extending in the left-right direction are fixed adjacently to the rear end of the bogie frame, and guide and hold the rear wheel support frame in the up-down direction. 4. The chemical sprayer according to claim 3, wherein the guide holding tube is fixed.