JP2002034423A - Chemical liquid-spraying vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical liquid-spraying vehicle having good user- friendliness. SOLUTION: This chemical fluid-spraying vehicle comprising a vehicle body 2 having a chemical fluid tank 8 disposed therein, a chemical fluid sprayer loaded on the vehicle body 2, a hand handle 5 attached to the vehicle body 2, and running wheels attached to the vehicle body is characterized by adjacently and rotatably attaching two pneumatic tires 3 (3A, 3B) to an axle pivotally spun in the vehicle body without forming a space between the two tires 3 (3A, 3B), whereby the tires can independently freely be rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a chemical spraying vehicle,
More specifically, the wheel mechanism, the structure of the chemical liquid tank, the spray mechanism, etc. were improved, mainly for a chemical liquid spraying vehicle that sprays liquid chemicals onto crops by power running means mounted on the car body, mainly by running manually in the valleys of furrows such as vegetable fields. To improve usability.

[0002]

2. Description of the Related Art Conventionally, a hand-operated type chemical spraying machine having traveling wheels has been proposed for a backpack type sprayer in order to impose a great deal of heavy labor on an operator. This kind of chemical spray vehicle
If you use a two-wheeled or four-wheeled vehicle with a wide width, it is easy to move, but if the valley of the field is narrow, it can not be put inside. It is necessary to work with long hoses with nozzles, in each case not only high power is required, but also the inability to spray on the back of the leaves of the crop and the hose may cause crop damage. Was.

For this reason, conventionally, a one-wheeled type chemical spraying vehicle is disclosed in Japanese Patent Application Laid-Open No. Hei 3-296458 and Japanese Utility Model Publication No. 63-2.
No. 7804, Japanese Utility Model Publication 3-1084, Japanese Utility Model Publication 4
Many proposals have been made in, for example, JP-A-41960 and JP-A-7-55909.

[0004]

However, these unicycle type sprayers also have the following problems. First of all, it is a unicycle because it runs in a narrow valley between the ridges of the field, but with a unicycle it is difficult to balance the left and right, very large force is required for transportation, The burden increases.

[0005] The chemical spraying vehicle described in Japanese Patent Application Laid-Open No. 3-296458 and Japanese Utility Model Publication No. 7-55909 has a structure in which wheels are put on an outer peripheral surface of a substantially circular chemical tank in a side view. However, there is a problem that not only is the production cost high, but also because it is difficult to maintain a balance when moving due to its height and stability. 63-2780
No. 4, Japanese Utility Model Publication 3-1084, Japanese Utility Model Publication 4-41
In the case of the sprayer described in Japanese Patent No. 960, the center of gravity is high and unstable because the chemical solution tank and the like are placed on the wheels, the work is difficult, and the structure is complicated, and the manufacturing cost is low. Get higher. In the case of a structure in which a pair of stationary legs are provided at the rear portion as in the sprayer described in Japanese Utility Model Publication No. 4-41960, the sprayer is stopped in a narrow place such as a ridge because it is wider than the wheels. There is also the problem that you cannot do that.

In addition to the above-mentioned problems, in a chemical spraying vehicle, it is necessary to use up the chemical supplied in a chemical tank provided on the vehicle body without leaving it. Was difficult. That is, the suction pipe is hung down in the chemical liquid tank, and the water suction port at the tip of the suction pipe is placed sideways on the bottom of the tank, or the tip is cut obliquely and placed on the bottom of the tank, and the chemical is sucked by the pump. With this structure, when the remaining liquid is low, it is difficult to suck up to the end, and air may enter the suction pipe due to the inclination of the tank or the liquid shakes, and the suction force of the pump may be lost. Battery is running high. In this way, when the remaining amount of the chemical solution increases, not only does it take time to clean the tank, but also
There is a problem that the remaining pesticide is mixed with another pesticide to be used next time and harms the crop. Furthermore, since the suction tube is placed on the bottom surface of the tank in the tank, the tip of the suction tube may stick to the bottom surface or the side surface of the tank due to the inclination of the tank, the vibration of the pump, and the suction pressure of the suction tube, and the water may not be absorbed.

Further, in a chemical spraying vehicle which travels in a valley of a ridge of a field of this kind, soil and mud tend to adhere to wheels, and it is necessary to scrape off the adhered soil and mud. Conventionally, as a scraper for scraping these soils and mud, FIG.
(A) As shown in (B), a long iron plate A and a round bar B are arranged in parallel with the rotation axis Wa of the wheel W. However, in the scraper made of an iron plate or a round bar arranged in parallel with the rotation axis, when the soil or mud attached to the wheel increases, a large force is applied to the scraper, and there is a problem that the scraper is damaged.

Further, in a chemical spraying vehicle, an operator generally grips a hose communicating with a chemical tank and sprays a chemical from a nozzle attached to the end of the hose. Therefore, it is necessary for the worker to spray the chemical solution with the hose while running the chemical spray vehicle by hand,
When the tank capacity is large and the vehicle body is heavy due to the chemical solution stored in the tank, the burden on the operator increases. In addition, when it is necessary to spray the chemical solution on the crops on both ridges, the chemical solution must be sprayed on the crops on one ridge, and then the chemical solution must be sprayed on the crops on the other ridge. There is a problem of burden.

It is an object of the present invention to solve the above-mentioned problems and to provide a convenient chemical spraying vehicle.

[0010]

In order to solve the above-mentioned problems, the present invention firstly provides a vehicle body provided with a chemical solution tank, power spraying means mounted on the vehicle body, a handle attached to the vehicle body, A traveling wheel attached to the vehicle body; two traveling tires are mounted on a single axle which is mounted between both side plates of the vehicle body so as to be adjacent to each other without leaving a gap; A chemical spraying vehicle is provided, wherein wheel tires are rotatably mounted on the axle, and each tire is configured to be able to rotate independently and freely.

More specifically, a pair of left and right wheel support portions is provided at the front of the vehicle body, and an axle is fixedly mounted between the wheel support portions. Two pneumatic tires are rotatably mounted via bearings. With this configuration, the two traveling wheels are arranged at the center in the width direction of the vehicle body.

The above-mentioned vehicle body is integrally formed by blow molding, and the vehicle width of the vehicle body is set so as to be able to travel in a valley between ridges of a field. The wheel support for fixing the axle of the traveling wheel does not protrude from the left and right outer surfaces of the substantially straight vehicle body. With this configuration, it is possible to freely travel in the narrow valleys with two traveling wheels. Also, a chemical solution tank is provided on the vehicle body by integral molding.

In the present invention, as described above, the two tires are arranged adjacent to each other at the center of the vehicle width, so that the vehicle can travel in the narrow valley between the ridges without increasing the vehicle width. it can. In addition, since the vehicle is a two-wheeled vehicle, the problem of the left and right balance, which has been a problem in unicycles, can be solved, and stable running can be realized while maintaining the right and left balance. In addition, since the two wheels can be rotated independently, a very small rotation can be performed, and a directional turn between valleys of narrow ridges can be easily performed.

The two-wheel tire is mounted on a front part and / or a rear part of the vehicle body. That is, two wheels may be attached to the front and rear of the vehicle body, but either one may be attached,
In that case, it is preferable to attach a single wheel caster to the other. However, without attaching one wheel caster,
The bottom of the vehicle body may be formed in a circular arc shape and grounded.

The present invention secondly provides a vehicle body provided with a chemical solution tank having the same basic configuration as the first invention, a power spray means mounted on the vehicle body, a handle attached to the vehicle body, In a chemical spraying vehicle equipped with traveling wheels attached to the vehicle body, in order to scrape off dirt and mud adhering to the outer peripheral surface of the traveling wheels, a plurality of pins are spaced from a bottom surface of the vehicle body corresponding to an upper portion of the traveling wheels. There is provided a chemical spraying vehicle characterized by being opened and protruded to be a scraper.

As described above, a rod or a plate extending parallel to the axle is conventionally used as a scraper. However, since a plurality of pins are used in the present invention, the scraper is used when scraping soil and mud. Load can be reduced. In addition, since the scraper pins are formed integrally with the vehicle body or fixed to the vehicle body, the strength of the pins can be increased. As a result, even if a large amount of soil or mud adheres to the outer peripheral surface of the wheel, the scraper can be used. Can be scraped off with a pin.

In particular, it is preferable that the pin of the scraper has an elliptical cross section that is long in the circumferential direction of the wheel. As described above, when the shape of the ellipse is long in the circumferential direction, the load applied to the pin can be reduced, and
By increasing the length in the circumferential direction, the scraping effect can be enhanced. Further, if the pins of the scraper are arranged in a staggered manner (ie, spaced in the axle direction and spaced in the circumferential direction), the time for the pins to hit the soil or mud is shifted, and the load on the pins can be further reduced. The ratio of the scraper pins to the wheel width occupied by the pins is preferably about 20%.
Soil and mud adhering to the entire outer peripheral surface of the wheel can be reliably scraped off.

Thirdly, the present invention provides a vehicle body provided with a chemical liquid tank having the same basic structure as the first and second inventions, a power spraying means mounted on the vehicle body, and a power supply means attached to the vehicle body. In a chemical spraying vehicle having a handle and a traveling wheel attached to the vehicle body, a pair of ribs protrude from the bottom surface of the chemical solution tank, and a concave portion serving as a lowermost point substantially at the center of the bottom surface sandwiched between the ribs. And a suction tube holding groove that opens at a part of the periphery of the recessed portion.The tip of the drug solution suction tube is fitted into the suction tube holding groove, and the water suction port at the tip of the drug solution suction tube is directed toward the inside of the recessed portion. There is provided a chemical spray vehicle characterized by being opened.

There is an opening between the pair of ribs, and the entire bottom surface of the chemical solution tank is inclined downward toward the opening, and the chemical solution in the chemical solution tank flows down into the space sandwiched by the ribs. It is sandwiched between ribs and accumulates in the above-mentioned depression in the space,
The liquid medicine in the liquid medicine tank is sucked by the suction pipe without remaining liquid.

As described above, since the bottom surface of the tank is provided with an inclination, the chemical solution eventually accumulates in the depression. Since the suction tube sandwiched by the suction tube holding groove is opened with respect to this depression, the suction tube can be almost completely sucked into the suction tube without remaining liquid in the tank. In particular, the water suction port at the end of the suction pipe is floated in the recess, and the bottom of the tank does not touch the side surface. In addition, the pump can be prevented from being damaged. Further, since the residual liquid can be eliminated, the tank can be easily washed, and it is possible to prevent the chemical spray from being mixed with the agricultural chemical to be used next time and causing chemical damage to the crops to which the chemical liquid is applied.

Further, the present invention provides, in a fourth aspect, a vehicle body provided with a chemical liquid tank having the same basic structure as the first, second and third inventions, and a power spray means mounted on the vehicle body;
In a chemical spraying vehicle having a handle attached to the vehicle body and a traveling wheel mounted on the vehicle body, the power spraying means includes a pump driven by a drive source such as an engine or a motor mounted on the vehicle body, and the pump A chemical suction tube which is connected to the suction port and has a tip drooping to the chemical solution tank,
Two hoses communicating with the discharge ports of the pump, a nozzle-attached pipe connected to the tip of each hose, and a chemical spray nozzle attached to each nozzle-attached pipe at intervals. The pipe is attached to an elevating / opening / closing mechanism installed on the vehicle body, and is provided on both sides of the vehicle body at a required angle and the height position can be adjusted.

Since the nozzle is attached to the nozzle-equipped pipe at an interval corresponding to the interval between the ridges, the chemical solution can be simultaneously sprayed on a plurality of ridge crops on the left and right sides centering on the chemical spraying vehicle. Further, by adjusting the inclination angle (opening angle to the left and right) of the nozzle-equipped pipe, the height of the nozzle-equipped pipe can be adjusted according to the height of the crop. Needless to say, a configuration in which the nozzle provided with a nozzle at the tip of the hose gripped by the operator is selectively replaced, and the operator holds the hose and sprays the chemical solution from the nozzle.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the whole of a chemical spray vehicle 1 of the present invention, 2 is a vehicle body integrally formed by blow molding,
(3A, 3B) are two pneumatic tires serving as front wheels, 4
Is a single traveling wheel serving as a rear wheel, 5 is a handle attached to the rear of the vehicle body 2, 6 is a chemical spray nozzle device attached to the front of the vehicle 2, and 7 (7A, 7B) is a chemical supply hose. A chemical solution tank 8 is formed at the center of the vehicle body 2, and a pump 10 for sucking and discharging the chemical solution 9 in the chemical solution tank 8 and a motor 11 for driving the pump are mounted on a rear portion of the vehicle body 2. The chemical solution tank 8 is configured such that the lid 12 on the upper surface is removed and pesticides and water are charged.

As shown in FIGS. 2 and 3, the two pneumatic tires 3A and 3B have a narrow width and the same diameter. A pair of left and right arm-shaped wheel support portions 2a protruding from a front portion of the vehicle body 2,
One axle 13 is fixed between 2b, and on this axle 13,
The tires 3A and 3B are mounted adjacent to each other without a gap, and are independently rotatably mounted via bearings.
The vehicle width W of the vehicle body 2 is set so as to be able to travel in the valley between the ridges of the field, and the wheel support portions 2a and 2b are provided on both side plate portions 2 of the vehicle body 2.
The two tires 3A and 3B serving as front wheels are accommodated in the vehicle width W of the vehicle body 2 without projecting outward from c and 2d.

As shown in FIG. 3, the rear wheel 4 is formed of a single wheel caster, and has a smaller diameter than the front wheel so that it can turn more easily. The rear wheel 4 has a structure in which rubber is attached to the outer peripheral surface of a resin drum or a metal drum. is there. Support shaft 4 of this rear wheel 4
a is rotatably supported by a bearing provided below the rear end of the vehicle body 2. The lower ends of the left and right vertical frame portions of the vertically long U-shaped handle 5 are fixed to the left and right bearing portions, and the directional operation of the handle 5 is transmitted to the rear wheel 4.

As shown in FIGS. 5A, 5B and 5C, the tires 3A and 3B are used as scrapers for scraping off earth and sand and mud attached to the front wheels of the two tires 3A and 3B.
A plurality of pins 14 project from the vehicle body 2 at intervals on the bottom surface 2e of the vehicle body 2 (the bottom surface on the front end side of the chemical solution tank 8) facing the outer peripheral surface of the vehicle body 2.

The pins 14 of the scraper have an elliptical cross section that is long in the circumferential direction of the wheel, and are arranged alternately at intervals in the axle direction and the circumferential direction, that is, in a staggered arrangement. In this embodiment, one tire has 2
A total of four pins are arranged so that the pins 14 are phased in the circumferential direction and hit mud or the like adhering to the outer peripheral surface of the wheel. The ratio of these pins 14 to the wheel width is approximately 20
%.

Chemical liquid tank 8 provided integrally with vehicle body 2
Is provided in the central region of the vehicle body excluding the power source mounting portion at the rear of the vehicle body from the front end side where the axle support portions 2a and 2b protrude, and the capacity of the chemical liquid tank 8 is increased while the vehicle body 2 is downsized. And When the chemical solution 9 is filled in the chemical solution tank 8, the chemical solution enters below the axle from the wheels 3 and 4,
The center of gravity of the vehicle body can be set at a very low position, thereby enabling stable running.

As shown in FIGS. 6 (A), 6 (B) and 6 (C), a pair of ribs 8b and 8 for preventing residual liquid are provided near the center of the bottom surface 8a.
b protruding in opposition to each other, and a spherical concave portion 8d serving as a lowermost point is provided substantially at the center of the bottom surface 8a-1 sandwiched between the ribs 8b.
Is formed. In the present embodiment, the recess 8d has a diameter of 30 mm to 80 mm, preferably 50 mm to 60 m.
m, depth is 10 mm to 30 mm, preferably 20 to 25
mm so that a required amount of the chemical solution can be stored.

A suction tube holding groove 8e having a U-shaped section is formed in a part of the periphery of the lowermost recess 8d. The vicinity of the distal end of the chemical suction tube 15 is fitted into the suction tube holding groove 8e, and the water suction port 15a at the distal end of the chemical suction tube 15 is opened toward the inside of the recess 8d. In this state, the water inlet 1
5a is held in a floating state in the recessed portion 8d to prevent the tip of the chemical solution suction tube from sticking to the bottom surface. This chemical suction pipe 15 is connected to the suction port of the pump 10 and
The operation is set so that the chemical liquid in the depression 8d is sucked up to the last drop by the operation of 0.

As shown in FIG. 6 (D), the pair of ribs 8b protrude with a gap therebetween to provide an opening 8f which is not shielded by the rib, and the bottom 8a of the chemical solution tank 8 is directed toward the opening 8f. The whole is inclined downward. With this configuration, the chemical solution 9 in the chemical solution tank 8 is caused to flow down into the space sandwiched between the ribs 8b, and finally stored in the recessed portion 8d, and the chemical solution 9 in the chemical solution tank 8 is removed by the chemical solution suction pipe 15 without remaining liquid. It is configured to be sucked.

As the power spraying means mounted on the vehicle body 2, the pump 10 and the engine 1
1 is installed. As shown in FIGS. 1 and 2, the suction port of the pump 10 is connected to the chemical suction pipe 15 as described above, and two hoses 7A and 7B are branched and connected to a discharge pipe 19 connected to the discharge port. These two hoses 7A, 7B are piped to the rear on the upper surface side of the vehicle body 2, and the nozzle attachment pipe 16 (1) of the chemical spray nozzle device 6 attached to the front upper surface of the vehicle body 2
6A, 16B).

Each of the nozzle-equipped pipes 16A and 16B is long enough to spray a chemical solution on a crop having a plurality of ridges U (three ridges in this embodiment, three ridges with one nozzle-equipped pipe). A plurality of nozzles 17 (three in this embodiment) are attached at intervals. These nozzles 17 are those which can stop the injection by rotating the nozzles and can adjust the injection direction.

The chemical spray nozzle device 6 also allows the height and opening angle of the pair of left and right nozzle attachment pipes 16A and 16B to be adjusted by a link type lifting / lowering mechanism 20 fixed to the upper surface of the vehicle body 2. I have. That is, the elevating and opening / closing mechanism 20 includes a column 21, a horizontal shaft 22 having a central portion externally fitted to the column 21 so as to be vertically movable, links 24A and 24B rotatably mounted on both ends of the horizontal shaft 22, and these links 24A. ,
It comprises links 25A and 25B connected to the other end of 24B and the column 21 by pins 26. The above links 24A, 24B
Are connected to the nozzle attachment pipes 16A and 16B.

By the operation of the four links 24A to 25B, the nozzle attachment pipes 16A and 16B are opened and closed at 90 degrees from a vertical solid line position shown in FIG. 2 to a horizontal position shown by a dotted line. That is, when the horizontal axis 22 is at the lowest point position with respect to the support column 21, the nozzle-attached pipe is in the vertical direction.

The position of the pin 26 connecting the support 21 and the links 25A and 25B can be moved up and down, so that the height of the nozzle attachment pipes 16A and 16B can be adjusted.

As described above, since the nozzle-attached pipes 16A and 16B to which the nozzles 17 for spraying the chemical solution are attached can be opened and closed and their height can be adjusted, they can be adjusted to a position corresponding to the height of the crop and the crop can be moved from the optimum position. The medicine can be sprayed.

In the chemical spray vehicle having the above-described configuration, first, the front wheels are connected to the two pneumatic tires 3A, 3B during running.
Since the vehicle is arranged adjacent to the center position in the width direction of the vehicle body 2, the vehicle can travel freely in narrow valleys between ridges without increasing the vehicle width while using two traveling wheels. In addition, since the vehicle is a two-wheeled vehicle, the problem of the left and right balance, which has been a problem with unicycles, can be solved. Further, since the two wheels can be independently rotated, a very small curvature can be obtained, and the direction can be easily turned between the narrow ridge valleys.

Further, since a plurality of pins 14 are used to scrape off dirt and mud adhering to the outer peripheral surface of the traveling wheel, the load on the scraper when scraping dirt and mud can be reduced. In particular, since the cross-sectional shape of the pin 14 is an elliptical shape that is long in the circumferential direction, the load applied to the pin 14 can be further reduced, and the effect of scraping off can be enhanced by being long in the circumferential direction. Further, the staggered arrangement shifts the position at which the pin 14 hits the soil or mud, thereby further reducing the load applied to the pin 14. When running in the valley between the ridges, a large amount of mud adheres to the outer peripheral surface of the wheel. However, as described above, the scraper is fixed to the vehicle body 2 by using the pin 14 and the strength is large. In a zigzag arrangement, a large amount of soil and mud adhering to the outer peripheral surface of the wheel can be reliably scraped off.

On the other hand, also with respect to the suction of the chemical solution 9 from the chemical solution tank 8, the chemical solution 9 will eventually accumulate in the recess 8d because the bottom surface 8a of the chemical solution tank 8 is inclined. Since the liquid suction tube 15 sandwiched by the suction tube holding groove 8e is opened to the recess 8d, the liquid suction tube 15 can be almost completely sucked into the liquid suction tube 15 without leaving any remaining liquid in the liquid medicine tank 8. . In particular, the chemical suction tube 15
The water-absorbing port 15a at the tip of the container is floated in the recess 8d and does not touch the bottom surface or side surface of the chemical liquid tank 8, so that it is possible to prevent the liquid from sticking to the bottom surface or side surface. Without interruption, and chemical pump 8
It can also prevent harm. Further, since the rib 8b is provided so as to surround the recess 8d, even if the vehicle body is tilted, the chemical solution in the rib 8b can be prevented from jumping out, and the remaining liquid is stored in the rib 8b, and finally the recess 8d is formed. Can be stored in
As described above, since the residual liquid can be eliminated, the cleaning of the chemical liquid tank 8 is simplified, and it is also possible to prevent the chemical spray from being mixed with the agricultural chemical to be used next time and causing chemical damage to the crops to which the chemical liquid is applied.

The chemical solution 9 sucked by the pump 10 from the chemical solution tank 8 and discharged at a required pressure is supplied to the hose 7.
It is guided to the nozzle injection device 6 in the front part of the vehicle body 2 through A and 7B, and is sprayed from the nozzle 17 to which the pair of left and right nozzle attachment pipes 16A and 16B is attached. Since each nozzle 17 is attached to the nozzle attachment pipes 16A and 16B at intervals corresponding to the interval between the ridges, the chemical liquid can be simultaneously sprayed on a plurality of ridge crops on the left and right sides centering on the chemical spraying vehicle. it can. In addition, since the inclination angle (opening angle to the left and right) can be adjusted by opening and closing the nozzle attachment pipe 16 in the left-right direction as described above, and the height can be adjusted, the height of the crop Y and the growing condition can be adjusted. Pipe with nozzle
By adjusting the height of 6 (16A, 16B), it is possible to spray the chemical solution on the crop from the optimum position.

The present invention is not limited to the above embodiment.
As shown in (2), a hose provided with a nozzle-attached pipe 16 'at the end of a hose 30 held by an operator may be selectively replaced with a pipe connected to a pump discharge port for use. In this case, instead of the automatic chemical spraying by the chemical spray nozzle device, the worker can hold the hose and spray the chemical only to the required crop.

As shown in FIG. 8, a pin 14 'of the scraper for scraping off the earth and sand attached to the wheel may be formed by a projection provided integrally with the vehicle body 2. Further, the pins 14 ′ composed of the projections may be formed into a round pin shape by projecting in a cylindrical shape, and may be arranged so as to be spaced apart in the axial direction of the wheel. You don't have to.

Further, the mounting form of the traveling wheels is not limited to the above embodiment, and the rear wheel 4 'shown in FIG. 9A may be a two-wheeled vehicle having the same tire as the front wheel 3. in this case,
The rear wheel preferably has a small diameter. Further, FIG.
, The front wheel 3 'may be a single wheel and the rear wheel 4' may be a two wheel. Further, as shown in FIG.
The motorcycle is a two-wheeled vehicle.
May be provided with an arc-shaped portion 2g 'at the bottom of the base for grounding.

[0045]

As is apparent from the above description, according to the chemical spraying vehicle of the present invention, two pneumatic tires having the same diameter are rotated via bearings as front wheels and / or rear wheels as running wheels. Because it is mounted freely, it is possible to freely travel in narrow valleys between ridges without increasing the vehicle width while using two traveling wheels.
Because it is a two-wheeled vehicle, it is possible to achieve stable running while maintaining the right and left balance. Further, since the two wheels can be independently rotated, a very small rotation can be performed, and a directional turn between valleys of a narrow ridge can be easily performed.

Furthermore, a large amount of earth and sand adheres to the traveling wheels, but a plurality of pins are formed integrally with the vehicle body or fixed to the vehicle body from the bottom surface of the vehicle body at positions corresponding to the outer peripheral surfaces of the wheels, and are spaced apart from the vehicle body. Since the pins protrude and are used as scrapers, soil and mud adhering to the entire outer peripheral surface of the wheel can be reliably scraped off.

Further, a pair of ribs protrude from the bottom surface of the chemical solution tank, and a concave portion serving as a lowermost point is provided substantially at the center of the bottom surface sandwiched between the ribs, and a part of the peripheral edge of the concave portion is provided. Since the suction tube holding groove that opens is provided, and the tip of the chemical solution suction tube is fitted into the suction tube holding groove, and the water suction port at the tip of the drug solution suction tube is opened toward the inside of the recess, the remaining liquid in the solution tank is It can be almost completely sucked into the liquid suction tube without leaving. In addition, since it is possible to prevent sticking to the bottom and side surfaces and prevent water from being absorbed, there is no interruption of the chemical spraying operation, and it is also possible to prevent the chemical pump from being damaged.

Further, a chemical spray nozzle device is provided as a chemical spray mechanism, and the nozzle installation pipe can be opened and closed right and left and the height can be adjusted, so that the nozzle can be installed according to the height of the crop and the growing condition. The height of the tube becomes possible, and the chemical can be sprayed from the optimum position. In addition, a chemical solution can be automatically sprayed on a plurality of ridge crops, and the operator need only manually push the chemical spray vehicle, so that the burden on the operator can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a chemical spraying vehicle of the present invention.

FIG. 2 is a side view of the chemical spraying vehicle.

FIG. 3 is a bottom view of the chemical spraying vehicle.

FIG. 4 is a partially cutaway view showing a capacity of a chemical solution tank of the chemical spray vehicle.

FIG. 5 shows a structure of a scraper attached to the chemical spraying vehicle, (A) is a schematic sectional view, (B) is a perspective view,
(C) is the schematic which shows the shape and arrangement form of the pin of a scraper.

FIG. 6 shows a chemical liquid tank of the chemical liquid spraying vehicle, and (A)
Is a cross-sectional view, (B) is a perspective view of a main part, (C) is an enlarged cross-sectional view of a main part, and (D) is a perspective view of a main part.

FIG. 7 is a drawing showing a chemical spray vehicle according to a modification of the present invention.

FIGS. 8A and 8B are views showing a modification of the scraper.

FIGS. 9A, 9B, and 9C are diagrams showing modified examples of wheels.

FIGS. 10A and 10B are schematic diagrams showing the structure of a conventional scraper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chemical spray vehicle 2 Body 3 (3A, 3B) Front wheel tire 4 Rear wheel 5 Handle 6 Chemical spray nozzle device 7A, 7B Chemical supply hose 8 Chemical tank 8b Rib 8d Depressed part 9 Chemical liquid 10 Pump 11 Engine 15 Chemical liquid suction pipe 16 Nozzle installation pipe 17 Nozzle

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masao Kusumoto 447, Shimoichi, Sanyo-cho, Akaiwa-gun, Okayama Prefecture Inside (72) Inventor Kenichi Akamatsu 447, Shimoichi-shi, Sanyo-cho, Akaiwa-gun, Okayama F in Minoru Industrial Co., Ltd. Terms (reference) 2B121 CB01 CB24 CB29 CB42 CB47 CB51 CB56 CB61 CB66 EA26 FA02 4D074 AA05 BB06 CC07 CC60

Claims (10)

[Claims] 1. A vehicle body provided with a chemical tank, a power spraying means mounted on the vehicle body, a hand wheel attached to the vehicle body, and a traveling wheel attached to the vehicle body, wherein the traveling wheel 1 mounted between both side plates
A configuration in which two tires are mounted on a book axle so as to be adjacent to each other without leaving a gap, and these two tires are rotatably mounted on the axle, respectively, so that each tire can rotate independently and freely. A chemical spraying vehicle characterized in that: 2. The chemical spray vehicle according to claim 1, wherein the two tires are attached to a front part and / or a rear part of the vehicle body. 3. The chemical spray vehicle according to claim 1, wherein the two tires are mounted on one of a front part and a rear part of the vehicle body, and one of the two tires is mounted on a single wheel. 4. A vehicle body provided with a chemical tank, a power spraying means mounted on the vehicle body, a handle attached to the vehicle body, and a traveling wheel attached to the vehicle body, and attached to an outer peripheral surface of the traveling wheel. A chemical spraying vehicle characterized in that a plurality of pins project from the bottom surface of the vehicle body, which is the upper part of the running wheels, at intervals to scrape off soil and mud, thereby forming a scraper. 5. The chemical spraying vehicle according to claim 4, wherein the scraper comprises a pin, and the cross-sectional shape of the pin is an elliptical shape that is long in a circumferential direction of the wheel. 6. The chemical spraying vehicle according to claim 4, wherein the pins are fixed to the vehicle body in a staggered arrangement or provided integrally with the vehicle body. 7. A vehicle provided with a chemical tank, a power spraying means mounted on the vehicle, a handle attached to the vehicle, and running wheels mounted on the vehicle, wherein a pair of ribs are provided on a bottom surface of the chemical tank. And a concave portion serving as a lowermost point is provided substantially at the center of the bottom face sandwiched between the ribs, and a suction pipe holding groove that opens at a part of the peripheral edge of the recess is provided, and a chemical solution is provided in the suction pipe holding groove. Insert the end of the suction tube,
A chemical spraying vehicle characterized in that a water suction port at a tip of the chemical suction pipe is opened toward the inside of the recess. 8. An opening is provided between the pair of ribs, and the entire bottom surface of the chemical solution tank is inclined downward toward the opening, so that the chemical solution in the chemical solution tank flows down into the space sandwiched by the ribs. , Which are sandwiched between the ribs and accumulate in the recess in the space,
8. The chemical spraying vehicle according to claim 7, wherein the chemical in the chemical tank is sucked by the suction pipe without residual liquid. 9. A vehicle body provided with a chemical liquid tank, power spray means mounted on the vehicle body, a handle attached to the vehicle body, and running wheels mounted on the vehicle body, wherein the power spray means is provided on the vehicle body. A pump driven by an on-board drive source, a drug solution suction pipe communicating with the suction port of the pump and having a tip hanging down from the drug solution tank, two hoses communicating with the discharge port of the pump, and each of these hoses A nozzle-equipped pipe connected to the tip of the nozzle, and a chemical spray nozzle attached to each nozzle-equipped pipe at an interval. The two nozzle-equipped pipes are attached to an elevating and opening / closing mechanism installed on the vehicle body, and A chemical spray vehicle that can be opened at the required angle on both sides and the height can be adjusted. 10. The vehicle body according to claim 1, wherein the vehicle body is blow-molded, a vehicle width of the vehicle body is a width capable of traveling in a valley between ridges of a field, and the chemical liquid tank is integrally formed with the vehicle body. 2. The chemical spraying vehicle according to claim 1.