JPH0678657A - Paddy working car - Google Patents

Abstract

PURPOSE:To enable lightening of a working car by equipping the working car with a suction unit for sucking water in a paddy field where the working car is running, utilizing the sucked water for the work and accurately spraying an agricultural chemical or a liquid fertilizer. CONSTITUTION:This paddy working car 1 is equipped with a suction pump (P1) for sucking water in a paddy field 5 where the working car is running. Water sucked up through the suction unit (S1) is mixed with an agricultural chemical or a fertilizer in a mixer (M) an the resultant mixture is sprayed through a sprayer 8. There is no requirement for a work for water replenishment, preparation, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a farming machine that uses water, for example, a sprayer that sprays pesticides (emulsions, wettable powders, water solvents, etc. diluted with water) and travels through paddy fields. The present invention relates to a paddy field work vehicle for performing work, and particularly to a paddy field work vehicle in which water to be used is sucked up from a paddy field where the work vehicle travels.

[0002]

2. Description of the Related Art Conventionally, in a liquid sprayer, a stock solution is diluted with water so that a pesticide is diluted to a predetermined concentration from the viewpoints of chemical damage to crops and safety of workers. And in paddy fields (paddy rice), it is usually about 100 per 10 ares.
~ 150 liters of pesticides are sprayed. As the spraying method, a power sprayer is placed at one place on the farm road, a hose is pulled from this, and the worker enters the paddy field and sprays it with a horizontal nozzle, or a method from the farm road to the paddy field using a gun nozzle. There are a method of spraying, a method of spraying while walking in the field using a backpack type sprayer, and a method of spraying from a farm road to paddy fields by a sprayer using a large blower.

However, both of the above methods are labor-saving and
It does not meet the desirable requirements for pesticide spraying, which have high spraying accuracy and low pesticide drift (scattering outside the intended purpose). Therefore, recently, research and development has been conducted on a work vehicle that uses a passenger car body such as a passenger rice transplanter as a trolley, and is equipped with a power sprayer and a wide spraying device to carry out control work while traveling in the field. It is carried out in all directions. Although this work vehicle can meet the above three desirable requirements, it needs about 3 pesticides to spread a large amount of pesticide (for example, 30 ares) to spread a certain area.
A pesticide tank containing 100 to 450 liters is required.

[0004]

The above-mentioned work vehicle requires a pesticide tank for storing a large amount of pesticide, and even if a pesticide tank having a large capacity could be installed, the vehicle body would be very heavy and the vehicle would run. You will not be able to drive smoothly through paddy fields where the ground is soft. Conversely, if the pesticide tank has a small capacity that does not hinder the running of the work vehicle,
The spraying work must be interrupted many times for water replenishment and pesticide preparation, resulting in reduced work efficiency. Therefore, if a small amount of high-concentration pesticide can be applied, the above problems can be solved to some extent, but at this stage, new registration of the pesticide is required, and even in the case of large-scale fields, even if a small amount of pesticide is applied, a large amount of A pesticide tank is required.

On the other hand, with respect to fertilizer application to paddy fields, not only granular fertilizer application but also liquid fertilizer application is performed. As an application method, there is a fertilization method in which liquid fertilizer is dripped at the water mouth and gradually poured into the paddy field. However, this method has a problem that it is difficult to apply it uniformly and it takes a long time to spread it over the entire field. As mentioned above,
Since there are many problems in the current application methods of pesticides and liquid fertilizers, in the present invention, by using a working machine that can travel in the paddy field, a paddy field work vehicle that can efficiently spray pesticides and liquid fertilizers. It is intended to be provided.

[0006]

In order to achieve the above object, the present invention is a paddy field vehicle equipped with a working machine that uses water and performing work while traveling in paddy fields. A feature is that a water absorbing device for sucking up the water of the paddy field on which the work vehicle travels is provided, and the work sucked by the water absorbing device is used to perform the work.

[0007]

With the above structure, the paddy field vehicle of the present invention is
A water absorption unit equipped with a device to prevent the ingestion of soil and contaminants in the paddy field is provided, and the water in the paddy field is sucked up by a pump from this water absorption unit. A water tank with a filter screen for removal is always filled to the specified height. The water in the water tank is pressure-fed by a spraying pump, mixed with a chemical solution in the middle of the pressure-feeding conduit to have a predetermined concentration, and then sprayed from a spraying section (may be dripped in liquid fertilizer).

[0008]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 and 2 are a side view and a rear view showing a first system according to the present invention. Reference numeral 1 is a paddy field working vehicle using a passenger car body such as a riding type rice transplanter as a bogie. Drive two front wheels 2 and two rear wheels 3 to perform work while traveling on a paddy field (field surface) 5 that is flooded 4.

A water absorption pump P1 is provided at the front of the paddy field vehicle 1.
And a water absorption part S1 are provided, and the submerged water 4 is sucked up from the water absorption part S1 by the operation of the water absorption pump P1. Water absorption part S1
A strainer is attached to the water inlet of the device to prevent the intake of impurities in the submerged water 4. The water sucked up from the water absorption part S1 is sent by the pump P1 to the water tank T2 mounted on the rear part of the paddy work vehicle 1 via the elevating link 6. A filter net 7 is provided above the water tank T2, and a pump P1
Soil particles and foreign substances are removed from the water sent from the water, and the cleaned water is stored temporarily in the water tank T2 to the extent that it does not hinder the spraying work.

The water stored in the water tank T2 is sucked up by the spraying pump P2 through the strainer S2,
It is sent to the spray unit 8 including the boom 8a and a large number of spray nozzles 8b, 8b .... When the amount of water stored in the water tank T2 becomes a certain amount or more, the excess water 9 is returned to the paddy field. A chemical liquid tank T1 is mounted on the rear part of the paddy work vehicle 1, a certain amount of the chemical liquid in the chemical liquid tank T1 is pressure-fed by a chemical liquid pump P3 provided in the vicinity thereof, and is being sent to the spraying unit 8 by the spraying pump P2. Is mixed with water in the pipeline. The chemical liquid mixed in the water is uniformly mixed by the mixer M and sprayed from the spray unit 8. Liquid fertilizer may be stored in the chemical liquid tank T1 in place of the chemical liquid and used for fertilization work. However, in the case of liquid fertilizer, it may be dropped from a dedicated nozzle. Reference numeral 10 is a spillway return path.

In the system as described above, water absorption and spraying are usually performed simultaneously. However, due to the unevenness of the field and the like, the water inlet of the water absorbing portion S1 may sometimes be exposed on the water surface 4a. In this case, it may take time until the water is sucked up even if the air is sucked from the water intake port and the water intake port returns below the water surface 4a. In order to deal with such a case, when the water inlet of the water absorbing portion S1 is exposed on the water surface 4a, as shown in FIG. 3, the level sensor 11 attached to the water absorbing portion S1 detects the water level and switches the switching valve. Switch V,
Until then, only the water absorption path A (the path from the water absorption section S1 to the water absorption pump P1 via the switching valve V) will submerge the paddy field 4
Was temporarily sucking up the emergency route B (water tank T
The water in the water tank T2 is circulated by switching from 2 to the path through the switching valve V to the water absorption pump P1). Then, when the water inlet is submerged below the water surface 4a, the level sensor 11 detects the water level again and returns to the water absorption path A for sucking up the flooded water 4 in the paddy field.

By performing the above control, the water absorbing portion S1
Even when the water suction port of is exposed on the water surface 4a, the water suction pump P
Since the water continues to pass through the inside of 1, the flooded water 4 in the paddy field can be swiftly sucked up when the water intake port returns below the water surface 4a. In this case, whether or not the submerged water 4 in the paddy field is being absorbed is not limited to using the level sensor 11 described above, but a sensor for detecting the flow of water is provided in the path near the water absorbing portion S1 (not shown). It is also possible to control. Of course, depending on the type of the water absorption pump, there is a case where the emergency route B as described above is not necessarily provided in practical use.

The water absorbing portion S1 shown in FIG. 3 has a float 13 supported by a supporting rod 12, a paddle-following sled 14, and a water inlet 15.
The float sensor 13 supports the level sensor 11 with a strainer. On the lower side of the float 13, there is a water inlet with a net 16 that prevents the infiltration of foreign matters in the flooded water 4, and the water that has entered from this water inlet is supplied from the water inlet 15 (with a strainer). I try to suck it up. The bottom surface of the float 13 is airtightly covered with a plate in order to avoid sucking mud from the rice field 5, and the water inlet 15 is arranged above the plate.
Further, the rear surface of the float 13 is open so that water can pass through the inside thereof.

The water inlet C of the water absorbing portion S1 is a water tank T.
2 and the water absorbing portion S1 is connected to the water surface 4 as described above.
Emergency route B from the water tank T2 when exposed on a
Is working. In addition, in this embodiment, the water absorbing portion S1 is attached to the front side of the front wheel 2 of the paddy work vehicle 1 by the support rod 12, but the attaching position is not limited to this position and may be another position. Is.

As shown in FIG. 1, the water tank T2 is provided with a filter net 7 on its upper part to remove soil particles and foreign matters from the water sent from the pump P1. As shown in FIG. 4, the water sent from the pump P1 is sprayed from the sprinkler pipe 17 onto the filter net 18 which is inclined to one side, and the water from which the soil particles and the foreign matters are removed through the filter net 18 is sprayed. The water may be stored in the water tank T2, and the mud 19 remaining on the filter net 18 may be discharged from the inclined lower end of the filter net 18 to the field.

The second system (embodiment) of the present invention shown in FIG. 5 is a water absorption pump P1 of the first system of FIG.
Is not used, and a portion of the pressure water is guided from the discharge side path of the spray pump P2 to the jet pump 20 (see FIGS. 6 and 7) attached to the upper part of the water absorption section S1,
By injecting pressure water into the mixing chamber 24 from the injection nozzle 23 in the jet pump 20, water is absorbed from the water intake port 22 (with a strainer) of the water absorption part S1. A pressure water distributor 21 is provided in the path on the discharge side of the spray pump P2.

In the second system, when normal water is first added to the water tank T2 as priming water and then the spray pump P2 is operated, a part of the pressure water travels along the path to the spray section 8 to The mixture is mixed with the chemical solution sent from the tank T1 by the chemical solution pump P3 to have a prescribed concentration and then sprayed from the spraying section 8 (in the case of liquid fertilizer, it is dropped by a dedicated nozzle). On the other hand, a part of the pressure water is sent to the jet pump 20 from the pressure water distributor 21 located between the discharge port of the spray pump P2 and the mixer M. When the pressure water is jetted from the jet nozzle 23 in the jet pump 20, the water suction port 22
Water 4 is sucked up from the water tank T2 along with pressure water.
Sent to.

In the water tank T2, as in the case of the first system, soil particles, foreign substances, etc. are filtered by the filter net 7 or 18, and clean water is supplied to the water tank T2 to the extent that it does not hinder spraying or the like. It is temporarily stored. As a matter of course, the water in the water tank T2 is the spray pump P2 and the jet pump 20.
Sent to. In this system, the water tank T2,
Since water always circulates in the path connecting the spraying pump P2 and the jet pump 20, even if the water absorbing part S1 comes out of the water surface 4a due to the unevenness of the field or the like, there is no great trouble. In this system, the water tank T2 may be the same as that shown in FIG. 4 (however, the water suction pump P1 is unnecessary).

FIG. 6 shows the jet pump 2 of the second system.
0, and FIG. 7 shows the structure of the water absorption part S1. Water absorption part S1
Specifically, the structure is substantially the same as the structure shown in FIG. 3, but there is no great difference except that the jet pump 20 is attached instead of the switching valve V. The level sensor 11 is for controlling the height of the water absorbing portion S1 with respect to the liquid surface. The pressure water inlet D of the jet pump 20 is connected to the discharge side of the spray pump P2.

FIG. 8 shows a third system in which one spraying pump P2 sucks up water and pumps it.
In this system, the water tank T3 has a closed structure, and the sucked water is temporarily stored in the water tank T3, then is pumped by the spray pump P2, mixed with the chemical liquid, and sprayed from the spray unit 8. It

The fourth system shown in FIG. 9 is of a type that performs intermittent water absorption. In this system, the water tank T
4 after absorbing water by the water absorption pump P1 until it becomes full, so that the pesticide tank T4 has a predetermined dilution ratio from the chemical liquid tank T1 through the chemical liquid amount control device 25 or directly from a commercially available chemical container or bag. A certain amount of the medicine is put into the mixture and mixed by the stirring device 26. The diluted and mixed agricultural chemicals are sent to the spray unit 8 by the spray pump P2 and sprayed. In this system, in order to enable continuous spraying work while absorbing water from the submerged water 4, the water tank T4 is
If you install one by one, or divide one tank into two and spray the pesticide in one tank with water while sucking water into the other tank, you can control this operation automatically. It will be possible.

In each of the above systems, the herbicide liquid can be used in addition to the pesticides and liquid fertilizers of the examples. In this case, the herbicide is sprayed on the surface of the paddy field or in the water, or a protective cover is attached to prevent it from adhering to the rice and then sprayed on the weeds between the rows. Also,
In the above embodiment, the chemical liquid is pumped by using the chemical liquid pump P3, but depending on the type of the spraying unit 8 used, the chemical liquid pump P3 is not used and the structure of the chemical liquid mixer M is
For example, a structure like the jet pump 20 may be used to contain the chemical liquid.

[0023]

As described above, according to the paddy field working vehicle of the present invention, the working vehicle is provided with the water absorbing device for sucking up the water of the paddy field on which the working vehicle is traveling, and the water sucked up by the water absorbing device is used. Since the work is performed, the following effects can be obtained. Since a large-capacity pesticide tank is not required, it is possible to reduce the weight of the work vehicle. From this, the paddy field running performance of the work vehicle is improved, and the work vehicle can be run stably. Since time for water supply and pesticide preparation is unnecessary, efficient spraying work becomes possible. Agricultural chemicals, liquid fertilizers, herbicides, etc. can be widely used, and work with high application accuracy can be performed.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment (system) of the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a side view of the water absorbing section.

FIG. 4 is an explanatory view of the water tank.

FIG. 5 is a side view of a second embodiment (system) of the present invention.

FIG. 6 is a side view of the jet pump.

FIG. 7 is a side view of the water absorbing section.

FIG. 8 is a partial explanatory diagram of a third embodiment (system) of the present invention.

FIG. 9 is a partial explanatory diagram of a fourth embodiment (system) of the present invention.

[Explanation of symbols]

 P1 Water absorption pump S1 Water absorption part T2 Water tank P2 Spraying pump T1 Chemical solution tank S2 Strainer P3 Chemical solution pump M Mixer V Switching valve A Water absorption path B Emergency path C Water inlet D Pressure water inlet T3 Sealed water tank T4 Pesticide tank 1 Paddy field vehicle 2 Front wheel 3 Rear wheel 4 Flooded water 4a Water surface 5 Paddy field (field surface) 6 Elevating link 7 Filtering net 8 Spray part 8a Boom 8b Spray nozzle 9 Spill water 10 Spill return path 11 Level sensor 12 Support rod 13 Float 14 Paddy field Following sled 15 Water inlet (with strainer) 16 Net 17 Water sprinkler 18 Filtration net 19 Mud 20 Jet pump 21 Pressure water distributor 22 Water inlet (with strainer) 23 Injection nozzle 24 Mixing chamber 25 Chemical quantity control device 26 Stirrer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiko Miyahara 1-40, Nisshin-cho, Omiya-shi, Saitama Prefecture 2 Biological specific industrial technology research promotion mechanism (72) Inventor Mitsuhiro Horio 1-40 Nisshin-cho, Omiya-shi, Saitama Address 2 Biological Specific Industrial Technology Research Promotion Organization

Claims (1)

[Claims] 1. A paddy field vehicle equipped with a working machine that uses water and performing work while traveling in the paddy field, wherein the working vehicle is provided with a water absorbing device for sucking up water from the paddy field on which the working vehicle runs. A paddy field vehicle characterized in that work is performed using water sucked up by a water absorbing device.