JP4879624B2 - Liquid spraying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid spraying apparatus capable of improving crop yield by performing the weed controlling work while minimizing the influence on the farm crop. <P>SOLUTION: The liquid spraying apparatus to spray a liquid such as agrochemicals and fertilizers to the base of a farm crop and the ground between ridges while moving along the ridge growing the farm crop is provided with an apparatus body 10, wheels 20A, 20B attached to the apparatus body 10 and rolling along the ridge, a handle 30 attached to the apparatus body 10 and operated by an operator, and spraying nozzles 40A, 40B attached to the apparatus body 10 and spraying the liquid to the base of the farm crop and the ground between ridges. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a liquid spraying device for spraying liquids such as agricultural chemicals and fertilizers on the grounds of agricultural crops and furrows.

A major problem in cultivating and harvesting crops such as soybeans, onions, and corn is the control of weeds from the sowing to the 40th to 45th days. If weed control is neglected during this time, the crop yield will decrease due to the growth competition between the crop and weed. However, if weeds are controlled during the period from the sowing to the 40th to 45th days, the leaves of the crops grow thick, the ground is shaded, and the weeds are difficult to grow.
As a general method for removing weeds, first, after sowing, before the weeds start to grow, a herbicide for preventing the generation of weeds, a so-called soil treatment agent is sprayed. Subsequently, when the effect of the soil treatment agent disappears and weeds begin to grow again, middle plowing by machines and ho weeding by human power are performed. By the way, it is said that the time required for the weeding work as described above occupies 30% of the working time in soybean cultivation. Therefore, for the purpose of shortening the working time, an increasing number of cases use a so-called foliar treatment agent, a herbicide that kills weeds generated in the growing season of crops (see Non-Patent Document 1 below).

  Most of the foliage treatment agents are diluted with water and sprayed using a sprayer or the like so as to adhere to the foliage of the weeds. For foliar treatment agents, there are agents that do not affect the crops even if they adhere to the crops during spraying, so-called selective foliar treatment agents, and agents that act on plants in general including crops, so-called non-selective foliar treatment agents. There is. Most of the prevalent selective foliar treatment agents do not act on broad-leaved plants such as soybeans, but only act on gramineous plants such as barnyard grass. Has no herbicidal effect. Therefore, a method of applying a non-selective foliar treatment agent to weeds without adhering to crops has been attempted. However, it is necessary to carefully carry out the application work, and it is desired that an efficient application method be established. ing.

When plowing, for example, the soil between the furrows is cultivated using a cultivator, and the excavated soil is accumulated in the crop stock. The interweed weeds are extracted by digging up the soil, and the stock weeds are buried in the soil and then controlled.
Middle tillage needs to be performed about 3 times in the period from sowing to 40-45 days. This is because the growth rate of weeds is very fast. However, be careful because the crops grow and grow a lot in the ground when it is the third time, and the roots may be cut when plowing the soil. This is because cutting the roots weakens the growth of the crops and reduces the harvest rate.
Weed Research Vol. 49, No. 4, 2004 Reprint "Changes in Herbicide Use in Japan"

As described above, it is well known that weeding operations such as spraying herbicides and plowing not only require great care but also impose a physical burden on the operator.
On the other hand, with the decline in the population engaged in agriculture and the aging of farmers, and the screaming labor-saving of farm work, it is inefficient to perform such delicate and sensitive work as described above. Needless to say. Therefore, at present, there are many cases in which only the effect of the soil treatment agent is relied on, and the herbicidal work such as spraying of the herbicide or middle cultivation is not performed after accepting the decrease in the harvest rate.

  An object of the present invention is made in view of the above circumstances, and a liquid spraying device capable of maintaining a stable yield by performing a herbicide treatment while minimizing the influence on agricultural products. Is to provide.

  The present invention is a liquid spraying device for spraying a liquid such as agrochemicals and fertilizers on the ground between the plant stock and the paddle while moving along the paddle of the crop, and is provided in the device body; A wheel that rolls along the ridge; a handle that is provided in the apparatus main body and is operated by an operator to roll the wheel to move the apparatus main body; provided in the apparatus main body, There is provided a liquid spraying device comprising: a spray nozzle for spraying the liquid onto the ground of a crop stock and a furrow.

According to the liquid spraying apparatus of the present invention, the operator holds the handle and moves the apparatus main body along the heel while the wheels are grounded and rolled. Then, while moving the apparatus main body, the liquid is sprayed from the spray nozzle toward the crop stock and the ground between the furrows.
Thereby, the operator can spray liquids such as herbicides toward the plant stock and the ground between the ridges simply by holding the handle and moving the apparatus body along the ridge. Therefore, the working efficiency can be greatly improved as compared with the work using the conventional herbicide.

  In the liquid spraying apparatus according to the present invention, it is preferable that the apparatus main body is provided with a scattering restriction unit that limits a range in which the liquid ejected from the spraying nozzle is scattered.

  According to the liquid spraying device of the present invention, the splashing restriction unit limits the range in which the liquid ejected from the spraying nozzle scatters. Can prevent liquid from splashing.

  In the liquid spraying apparatus of the present invention, it is preferable that the scattering restriction part is displaceable with respect to the apparatus main body.

  According to the liquid spraying apparatus of the present invention, the range in which the liquid is sprayed varies depending on the type of crop and the time of growth. Therefore, by displacing the splash limiter according to these conditions and setting the range to be sprayed appropriately, the liquid is sprayed accurately only in the range to be sprayed as described above, and in the range that should not be sprayed. The liquid can be prevented from splashing.

  In the liquid spraying apparatus of the present invention, it is preferable that the apparatus main body is provided with a stock inclined portion that abuts against the crop stock and tilts the stock when moving along the basket.

  According to the liquid spraying device of the present invention, since the stock inclined part tilts the stock in contact with the crop stock, the stock source of the crop that is the range in which the liquid is to be sprayed is exposed from the device body. . Therefore, the liquid can be accurately sprayed on the stock without being disturbed by the leaves of the crops.

  In the liquid spraying apparatus of the present invention, it is preferable that the scattering restriction portion also serves as a stock inclination portion that abuts against the crop stock and tilts the stock when moving along the ridge.

  According to the liquid spraying apparatus of the present invention, since the scattering restriction part also serves as the stock inclined part, the structure of the apparatus is simplified. Therefore, it is possible to reduce the size of the apparatus and reduce the manufacturing cost.

  The liquid spraying device of the present invention is provided in the device main body, and includes a warp-shaped portion that touches the ground when moving and moves up and down along the undulation of the ground, and the spray nozzle is provided in the warp-shaped portion, It is preferable to move up and down following the shape portion.

  According to the liquid spraying apparatus of the present invention, the height of the spray nozzle from the ground is substantially increased by raising and lowering the warped portion along the undulations of the ground and moving the spray nozzle up and down following the raised and lower warped portion. Therefore, even if the ground is undulating, the liquid is not sprayed from the spray nozzle wider than the originally intended range, and conversely, the liquid is not sprayed narrower than the originally intended range. Accordingly, the liquid can be accurately sprayed.

  In the liquid spraying apparatus of the present invention, it is preferable that the warped portions are respectively provided on both sides of the apparatus main body.

  According to the liquid spraying device of the present invention, each warp-like portion is raised and lowered separately along the undulations of the two ridges in which the crop stock is buried, and the spraying nozzle is raised and lowered separately following that, Even if the undulations are intense, the liquid is sprayed over an appropriate range including the plant stock of the crop, so the liquid will not be sprayed beyond the necessary range.

  The liquid spraying device of the present invention preferably includes a container for storing the liquid supplied to the spraying nozzle, and the container is preferably carried by the operator.

  According to the liquid spraying apparatus of the present invention, the operator main body that travels on the farmland is reduced in weight and size when the operator holds the container for storing the liquid, so that the liquid spraying work can be easily performed.

  According to the liquid spraying apparatus of the present invention, it is possible to perform herbicidal work using a herbicide while minimizing the influence on the crops to be originally protected.

A first embodiment of the liquid spraying apparatus of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the liquid spraying device of this embodiment includes a device main body 10, two wheels 20A and 20B, a handle 30, and two spraying nozzles 40A and 40B.
The apparatus main body 10 has a frame structure in which metal or resin pipes are combined. The two wheels 20A and 20B are supported on both sides of the apparatus main body 10 so as to be able to roll in the same direction. Spikes 21 are fixed to the outer peripheral surfaces of the wheels 20A and 20B at almost equal intervals. The wheels 20 </ b> A and 20 </ b> B are grounded on the ground and roll along the fence when the apparatus main body 10 is moved along the fence on which the crop is planted.

A proximal end of the handle 30 is fixed to the center of the rear portion of the apparatus main body 10. The handle 30 extends in a direction orthogonal to the direction in which the two wheels 20A and 20B are separated from each other, and the operator moves the apparatus main body 10 by holding the tip of the handle 30 and operating it to push the liquid spraying device. Let The two spraying nozzles 40A and 40B are connected to a herbicide supply mechanism described later, and jet a liquid herbicide toward the plant stock and the ground between the furrows.
Hereinafter, the direction in which the two wheels 20A and 20B are separated from each other is defined as the width direction of the liquid spraying apparatus (or the apparatus body 10), and the direction in which the handle 30 extends is defined as the longitudinal direction of the apparatus.

  As shown in FIG. 2, of the two spray nozzles 40A and 40B, the spray nozzle 40A on the right side in the traveling direction of the liquid spray apparatus is closer to the wheel 20A than the center in the width direction of the apparatus body 10 and the wheel 20A. It is arrange | positioned behind the rotating shaft of this, and is fixed to the fixed position. The spray nozzle 40 </ b> A sprays the herbicide in a droplet shape larger than the mist shape toward the lower side of the apparatus main body 10. The herbicide ejected from the spray nozzle 40 </ b> A spreads in a fan shape and is ejected in the width direction of the apparatus main body 10. In addition, as for the angle of the splash which spreads in fan shape, about 140 degrees is desirable.

  The apparatus body 10 is provided with anti-scattering plates 11A, 12A, 13A, and 14A that prevent the herbicide from being excessively scattered so as to cover the periphery of the spray nozzle 40A. The scattering prevention plate 11A is arranged on the front side in the longitudinal direction of the liquid spraying device from the spray nozzle 40A so as to extend in the width direction of the liquid spraying device. The anti-scattering plate 12A is arranged behind the spray nozzle 40A in the longitudinal direction of the liquid spray device so as to extend in the width direction of the liquid spray device. The scattering prevention plate 13A is arranged outside the spray nozzle 40A in the width direction of the liquid spray device so as to extend in the longitudinal direction of the liquid spray device. The anti-scattering plate 14A is arranged so as to extend in the longitudinal direction of the liquid spraying device on the inner side in the width direction of the liquid spraying device than the spray nozzle 40A.

The scattering prevention plates 11A, 12A, and 13A are all fixed to the apparatus main body 10.
As shown in FIG. 3, the scattering prevention plate 13 </ b> A is provided with a scattering restriction portion 15 </ b> A that restricts the range in which the herbicide sprayed from the spray nozzle 40 </ b> A toward the outside in the width direction of the apparatus body 10 is scattered. . The scattering restriction part 15A includes a semi-cylindrical part 17a and a partition part 17b attached so as to partition the inner side of the semi-cylindrical part 17a. A part of the lower edge of the anti-scattering plate 13A is notched, and the anti-scattering part 15A covers the notched part, and the longitudinal axis of the semi-cylindrical part 17a is set on the apparatus main body 10. It is attached to the anti-scattering plate 13A so as to coincide with the vertical direction. The scattering restricting portion 15A can change the height-attached position with respect to the scattering preventing plate 13A in a stepwise manner, thereby changing the height of the scattering restricting portion 15A with respect to the spray nozzle 40A.

The scattering prevention plate 14 </ b> A can change the attachment position in the height direction with respect to the apparatus main body 10 in a stepwise manner.
As shown in FIG. 4, the scattering prevention plate 14 </ b> A is provided with a scattering restriction portion 16 </ b> A that restricts the range in which the herbicide sprayed from the spray nozzle 40 </ b> A toward the inner side in the width direction of the apparatus main body 10 is scattered. . The scattering restriction part 16A includes a semi-cylindrical part 18a and a partition part 18b attached so as to partition the inner side of the semi-cylindrical part 18a. The lower edge of the anti-scattering plate 14A is notched part, scattered limiting portion 16A is such to cover the cut-out portion, and the semi-cylindrical portion 18a of the longitudinal axis of the apparatus body 10 It is fixed to the anti-scattering plate 13A so as to coincide with the vertical direction. The scattering restriction part 16A can change the mounting position with respect to the apparatus main body 10 together with the scattering prevention plate 14A, thereby changing the height of the scattering restriction part 16A with respect to the spray nozzle 40A.

  The scattering restriction portions 15A and 16A have a function as a stock inclination portion that abuts against a crop stock and tilts the stock when moving the liquid spraying device along the ridge.

  As shown in FIG. 2, the spray nozzle 40B on the left side in the traveling direction of the liquid spraying device is disposed closer to the wheel 20B than the center in the width direction of the device body 10 and behind the rotating shaft of the wheel 20B. Fixed in position. Similarly to the spray nozzle 40 </ b> A, the spray nozzle 40 </ b> B is sprayed toward the lower side of the apparatus main body 10 in the form of a herbicide having a larger particle size than the mist. The herbicide ejected from the spray nozzle 40B is also ejected in a fan shape in the width direction of the apparatus main body 10. In addition, as for the angle of the splash which spreads in fan shape, about 140 degrees is desirable.

  Similarly to the above, scattering prevention plates 11B, 12B, 13B, and 14B for preventing excessive scattering of the herbicide are attached to the apparatus main body 10 so as to cover the periphery of the spray nozzle 40B. The anti-scattering plate 11B is disposed on the front side in the longitudinal direction of the liquid spraying device from the spray nozzle 40B so as to extend in the width direction of the liquid spraying device. The anti-scattering plate 12B is arranged behind the spray nozzle 40B in the longitudinal direction of the liquid spray device so as to extend in the width direction of the liquid spray device. The anti-scattering plate 13B is disposed outside the spray nozzle 40B in the width direction of the liquid spray device so as to extend in the longitudinal direction of the liquid spray device. The anti-scattering plate 14B is disposed so as to extend in the longitudinal direction of the liquid spraying device on the inner side in the width direction of the liquid spraying device than the spray nozzle 40B.

The scattering prevention plates 11B, 12B, and 13B are all fixed to the apparatus main body 10.
The scattering prevention plate 13B is provided with a scattering restricting portion 15B that restricts a range in which the herbicide sprayed from the spray nozzle 40B toward the outside in the width direction of the apparatus main body 10 is scattered. Since the structure of the scattering restriction unit 15B is the same as that of the scattering restriction unit 15A already described, detailed description thereof is omitted. The scattering restricting portion 15B can change the height-attached position with respect to the scattering preventing plate 13B in a stepwise manner, thereby changing the height of the scattering restricting portion 15B with respect to the spray nozzle 40B.

The scattering prevention plate 14B can change the attachment position of the height direction with respect to the apparatus main body 10 in steps.
The scattering prevention plate 14 </ b> B is provided with a scattering restriction unit 16 </ b> B that restricts the range in which the herbicide sprayed from the spray nozzle 40 </ b> B toward the inside of the apparatus main body 10 in the width direction is scattered. Since the structure of the scattering restriction unit 16B is the same as that of the scattering prevention unit 16A already described, detailed description thereof is omitted. The scattering restriction part 16B can change the mounting position with respect to the apparatus main body 10 together with the scattering prevention plate 14B, and thereby the height of the scattering restriction part 16B with respect to the spray nozzle 40B can be changed.

  The scattering restricting portions 15B and 16B have a function as a stock inclined portion that abuts against a crop stock and tilts the stock when the liquid spraying device is moved along the ridge.

  As shown in FIG. 1, the handle 30 is made of a metal pipe like the apparatus main body 10. A stiffening plate 30 a is attached to the proximal end of the handle 30 in order to increase the rigidity of the apparatus main body 10. A flexible hose 31 is inserted inside the handle 30. One end of the flexible hose 31 protruding from the base end of the handle 30 is bifurcated, one branch hose 31A is connected to the spray nozzle 40A, and the other branch hose 31B is connected to the spray nozzle 40B.

  The other end of the vinyl pipe 31 is connected to the herbicide supply mechanism 50 via a connection portion provided at the tip of the handle 30. The herbicide supply mechanism 50 includes a container 51 that contains the herbicide, a pump 52 that pushes out the herbicide from the container 51, and a flexible hose 53 that guides the herbicide pushed out by the pump 52 to the liquid spraying device. The container 51 and the pump 52 are packaged and can be carried on the shoulder by an operator using a shoulder belt (not shown). When the pump 52 is driven, the herbicide is pushed out of the container 51 and supplied to the two spray nozzles 40A and 40B through the flexible hoses 53 and 31.

  When the two spray nozzles 40A and 40B are viewed in plan view from above, as shown in FIG. 2, the right spray nozzle 40A is disposed before the left spray nozzle 40B. That is, the spray nozzles 40 </ b> A and 40 </ b> B are fixed to the apparatus main body 10 by being offset forward and backward. As the spray nozzles 40A and 40B are offset back and forth, the scattering restriction portion 15A attached to the scattering prevention plate 13A is disposed before the scattering restriction portion 15B attached to the scattering prevention plate 13B. Further, the scattering restricting portion 16A attached to the scattering preventing plate 14A is disposed before the scattering restricting portion 16B attached to the scattering preventing plate 14B.

  The scattering prevention plate 14 </ b> A and the scattering prevention plate 14 </ b> B are arranged in parallel at substantially the center in the width direction of the apparatus main body 10. The scattering restriction portions 16A and 16B are offset forward and backward as described above, and are provided so as to protrude into the space between the scattering prevention plate 14A and the scattering prevention plate 14B.

  The front end portion of the anti-scattering plate 14A and the front end portion of the anti-scattering plate 14B are bent outward in the width direction of the apparatus main body 10 so that the distance between both plates increases toward the front. Further, at the center of the apparatus main body 10 in the width direction, one indicator bar 19 that points forward in the traveling direction of the liquid spraying apparatus is fixed. The indicator bar 19 serves as a guide for the direction of travel when the operator pushes using the liquid spraying device.

  The operation | work which spreads a herbicide on the ground of the stock base of a crop and a cage | basket along the 3 row | line | stands using the liquid spraying apparatus comprised as mentioned above is demonstrated. The liquid spraying device of the present embodiment sprays herbicides from both sides to the crop stock of the central cocoon among the three cocoons, and from the inside to the crop stock of the cocoon crops on both sides of the two cocoons. Sprinkle herbicides toward In addition, spray the herbicide on the ground between each fence.

  First, as shown in FIG. 5, the worker arranges the liquid spraying device at the end of the three ridges on which the herbicide is to be sprayed so that the direction of the cocoon matches the traveling direction. At this time, the center ridge is arranged between the scattering prevention plate 14A and the scattering prevention plate 14B. In addition, the length of the apparatus main body 10 in the width direction of the liquid spraying apparatus is twice as long as the interval between adjacent ridges, that is, the interval between the ridges corresponding to three strips. In other words, the crops are planted so that the distance between the three ridges is longer than the length in the width direction of the device main body 10 of the liquid spraying device. Accordingly, when the liquid spraying device is arranged such that the central bag is arranged between the scattering prevention plate 14A and the scattering prevention plate 14B, the apparatus main body 10 is accommodated between the both sides. The right wheel 20A is in contact with the ground between the center rod and the right rod, and the left wheel 20B is grounded on the ground between the central rod and the left rod.

  The operator drives the pump 51 of the herbicide supply mechanism 50, holds the handle 30, and pushes the liquid spraying device along the direction of the heel. When pushed through the handle 30, the apparatus main body 10 rolls the wheels 20A and 20B and starts moving along the heel. Almost simultaneously, the herbicide begins to be ejected from the two spray nozzles 40A and 40B.

  The herbicide ejected from the spray nozzle 40A is sprayed on the ground surface between the center kite and the right kite as the apparatus main body 10 is pushed forward. Furthermore, the crop of the right straw comes into contact with the scattering restriction portion 15A. And it is made to incline outside by the function as a stock inclination part of 15 A of scattering restrictions, and a stock origin is exposed. Specifically, while the crop hits the front surface in the traveling direction of the semi-cylindrical portion 17a constituting the scattering restriction portion 15A and moves along the curved side surface of the semi-cylindrical portion 17a, the outer side in the width direction of the apparatus main body 10 That is, it is inclined so as to bend to the right side in the traveling direction of the apparatus main body 10. The angle of inclination is not so large and the stem does not break. Then, the herbicide sprayed from the spray nozzle 40A is sprayed on the tilted crop stocks.

As shown in FIG. 6, the range of the herbicide ejected from the spray nozzle 40 </ b> A is limited by the original action of the scattering restriction unit 15 </ b> A. That is, the herbicide sprayed obliquely downward from the spray nozzle 40A is sprayed only in a semi-elliptical region protruding outward in the width direction of the apparatus main body 10 in accordance with the semicircular spread at the lower end of the semi-cylindrical portion 17a. Is done. Since the spray of the herbicide whose scattering is restricted by the scattering restriction unit 15A is sprayed from the low position toward the plant stock of the crop, it does not start on the leaf grown near the stock source. If the herbicide is applied to the leaf that grows close to the stock, the height of the scattering limiter 15A relative to the spray nozzle 40A is lowered to adjust the scattering range. On the other hand, if the herbicide does not reach the strain, the scattering range is adjusted by increasing the height of the scattering restriction portion 15A relative to the spray nozzle 40A.
In addition, since the range to which the herbicide should be sprayed varies depending on the type of crop and the time of growth, it is necessary to change the height of the scattering restriction portion 15A according to these conditions and set the range to be sprayed appropriately. preferable.

  The herbicide ejected from the spray nozzle 40B is sprayed on the ground surface between the center kite and the left kite as the apparatus main body 10 is pushed forward. Furthermore, the crop of the left side abuts against the scattering restriction part 15B. And it is made to incline to the outer side of the width direction of the apparatus main body 10, ie, the left side toward the advancing direction of the apparatus main body 10, by the function as a stock inclination part of the scattering restriction | limiting part 15B, and a stock origin is exposed. Then, the herbicide sprayed from the spray nozzle 40 </ b> B is sprayed on the crop stock tilted as described above. The herbicide ejected from the spray nozzle 40B is limited in the range of scattering by the original function of the scattering restriction unit 15B, and is sprayed from the low position toward the crop stock. It doesn't touch the leaves. In addition, the change of the height with respect to the spray nozzle 40B of the scattering restriction | limiting part 15B shall be suitably performed in the same way as said scattering restriction | limiting part 15A.

  As the main body 10 is pushed forward, the crop of the middle basket enters between the scattering prevention plate 14A and the scattering prevention plate 14B. The crop that has entered between the two plates first comes into contact with the scattering restricting portion 16A provided on the scattering preventing plate 14A. And by the function as a stock inclination part of 16 A of scattering restrictions, it is made to incline to the inner side of the width direction of the apparatus main body 10, ie, the left side toward the advancing direction of the apparatus main body 10, and exposes the stock. Then, the herbicide sprayed from the spray nozzle 40 </ b> A is sprayed on the stock of the agricultural product tilted as described above. The herbicide ejected from the spray nozzle 40A has its scattering range limited by the original function of the scattering restriction unit 16A, and is sprayed from a low position toward the crop stock. It doesn't touch the leaves. In addition, the change of the height with respect to the dispersion | spray nozzle 40A of the scattering restriction | limiting part 16A shall be suitably performed in the same way as said scattering restriction | limiting part 15A.

The crops sprayed with the herbicide sprayed from the spray nozzle 40A abuts against the scattering restricting portion 16B provided on the scattering prevention plate 14B in a row. Then, due to the function of the scattering restricting portion 16B as the stock tilting portion, the stock tilting unit 16 is now tilted to the inner side in the width direction of the apparatus body 10, that is, to the right side in the traveling direction of the device body 10. Then, the herbicide sprayed from the spray nozzle 40 </ b> B is sprayed on the crop stock tilted as described above. The herbicide ejected from the spray nozzle 40B is limited in the range of scattering by the original function of the scattering limiter 16B and sprayed from the low position toward the plant stock of the crop, so it grew in a position close to the stock source. It doesn't touch the leaves. In addition, the change of the height with respect to the spray nozzle 40B of the scattering restriction | limiting part 16B shall be suitably performed in the same way as said scattering restriction | limiting part 15A.
In this way, the crops that enter between the scattering prevention plate 14A and the scattering prevention plate 14B are tilted to the left and right, and the herbicide is sprayed from the direction in which the stock is exposed.

  When the operator pushes the liquid spraying device along the direction of the cocoon, the herbicide is sprayed from both sides of the crop stock of the central cocoon among the three cocoons and A herbicide is sprayed from the inside to the outside of the crop stock. In addition, herbicides are also sprayed on the ground between each ridge.

  When the spraying of the herbicide is completed as described above along the ridge of Article 3, it is folded at the opposite end of the cocoon that has been sprayed, and the cocoon that was on the right side of the device body 10 in the forward path is again A liquid spraying device is arranged at the end of the adjacent three ridges so as to be located on the right side. Then, when the liquid spraying device is pushed along the direction of the straw, the herbicide is sprayed on the adjacent three crops of straw as described above. At this time, the herbicide is sprayed on the right side crops from the opposite side of the forward route.

  According to the liquid spraying apparatus configured as described above, the operator holds the handle 30 and simply moves the apparatus main body 10 along the fence, and the herbicide is directed toward the plant stock and the ground between the fences. Can be sprayed. Therefore, the working efficiency can be greatly improved as compared with the work using the conventional herbicide.

  According to the above liquid spraying device, the scattering restriction parts 15A and 16A restrict the range in which the herbicide sprayed from the spray nozzle 40A is scattered, and the scattering restriction parts 15B and 16B are the weeds sprayed from the spray nozzle 40B. Since the range in which the agent is scattered is limited, the herbicide can be accurately sprayed only in the range to be sprayed, and the herbicide can be prevented from scattering in the range not to be sprayed.

  The area to which the herbicide should be applied varies depending on the type of crop and the time of growth. Therefore, according to the above-described liquid spraying device, the heights of the scattering restriction units 15A and 16A and the scattering restriction units 15B and 16B are changed according to these conditions, and the range to be sprayed is set appropriately. As described above, the herbicide can be sprayed in an appropriate range.

  According to the above-mentioned liquid spraying device, the strain is tilted in contact with the crop stock by the function of the stock tilting portion of the scattering restricting portions 15A and 16A and the scattering restricting portions 15B and 16B. The stock sources of the crops included in the range are exposed when viewed from the apparatus main body 10. Therefore, the herbicide can be accurately sprayed on the plant stock without being disturbed by the leaves of the crops.

  According to the above-described liquid spraying device, the scattering restriction portions 15A and 16A and the scattering restriction portions 15B and 16B also serve as stock inclination portions, so that the structure of the device is simplified. Therefore, it is possible to reduce the size of the apparatus and reduce the manufacturing cost.

Next, a second embodiment of the liquid spraying apparatus of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component already demonstrated in the said 1st Embodiment, and those description is abbreviate | omitted.
As shown in FIG. 7, the liquid spraying device of this embodiment includes a device main body 110, two wheels 120A and 120B, a handle 130, and three spraying nozzles 140A, 140B, and 140C.
The apparatus main body 110 is an integrally molded product made of resin. The two wheels 120A and 120B are supported on both sides of the apparatus main body 110 so as to be able to roll in the same direction. Spikes 121 are fixed to the outer peripheral surfaces of the wheels 120A and 120B at almost equal intervals. The wheels 120 </ b> A and 120 </ b> B are grounded on the ground and roll along the fence when the apparatus main body 110 is moved along the fence on which the crop is planted. In addition, the base end of the handle 130 is fixed substantially at the center of the apparatus main body 110. The handle 130 extends in a direction orthogonal to the direction in which the two wheels 120A and 120B are separated from each other. The operator holds the tip of the handle 130 and operates to push the liquid spraying device to move the apparatus main body 110. Let The three spray nozzles 140A, 140B, and 140C are connected to the herbicide supply mechanism 50, and spray the liquid herbicide toward the plant stock and the ground between the furrows.
Hereinafter, the direction in which the two wheels 120A and 120B are separated from each other is defined as the width direction of the liquid spraying device (or the device main body 110), and the direction in which the handle 130 extends is defined as the longitudinal direction of the device.

  As shown in FIG. 8, the apparatus main body 110 has a shape in which the bathtub is turned upside down, and the three spray nozzles 140A, 140B, 140C are attached to the back side of the apparatus main body 110, that is, the wheels 120A, 120B on the ground. It is attached on the side facing the ground when it is grounded.

  As shown in FIG. 9, the apparatus main body 110 is provided with two warped portions 150 </ b> A and 150 </ b> B that come into contact with the ground when moving and move up and down along the undulations of the ground. The apparatus main body 110 has a shaft 151A fixed to the outside of the right wheel 120A and behind the wheel 120A, at a position lower than the rotation shaft of the wheel 120A, in parallel with the rotation shafts of the wheels 120A and 120B. Has been. One warped portion 150A can swing so as to move the tip up and down by being pivotally supported by the shaft 151A. Further, between the device main body 110 and the warped portion 150A, the warped portion 150A is directed to the ground when the warped portion 150A is moved away from the device main body 110, that is, when the wheels 120A and 120B are grounded to the ground. A spring body 152A for biasing is provided.

Further, in the apparatus main body 110, a shaft 151B is fixed to the outside of the left wheel 120B and behind the wheel 120B, at a position lower than the rotation shaft of the wheel 120B, in parallel with the rotation shaft of the wheels 120A and 120B. Has been. The other warped portion 150B can swing so as to move the tip up and down by being pivotally supported by the shaft 151B. Further, between the device main body 110 and the warped portion 150B, the warped portion 150B is directed to the ground when the warped portion 150B is away from the device main body 110, that is, when the wheels 120A and 120B are grounded to the ground. A spring body 152B for biasing is provided.
The tip of the sled portion 150A is pressed against the ground during movement by being biased by the spring body 152A, and the sled portion 150A swings up and down according to the undulation of the ground. Further, the tip of the warped portion 150B is also pressed against the ground during movement by being biased by the spring body 152B, and the warped portion 150B also swings up and down according to the undulation of the ground.

Of the three spray nozzles 140A, 140B, 140C, the spray nozzle 140A is fixed at a position slightly spaced from the base end of the warped portion 150A toward the distal end side. The spray nozzle 140A is disposed on the wheel 120A side on the right side of the center of the apparatus body 110 in the width direction and behind the wheel 120A and at a position lower than the rotation axis of the wheel 120A, and the swinging portion 150A swings. Displaces up and down according to
The spray nozzle 140B is also fixed at a position slightly spaced from the proximal end of the warped portion 150B toward the distal end side. The spray nozzle 140B is disposed on the wheel 120B side on the left side of the center of the apparatus body 110 in the width direction and behind the wheel 120B and at a position lower than the rotation axis of the wheel 120B, and the swinging portion 150B swings. Displaces up and down according to

The spray nozzle 140C is fixed at the center of the apparatus main body 110 in the width direction and behind the wheels 120A and 120B and at a position lower than the rotation shafts of both wheels. The spray nozzle 140 </ b> C sprays the herbicide in a droplet shape larger than the mist shape toward the lower side of the apparatus main body 10.
The three spray nozzles 140 </ b> A, 140 </ b> B, 140 </ b> C spray the herbicide toward the lower side of the apparatus main body 110 in the form of droplets having larger grains than the mist. The herbicide ejected from each spray nozzle is ejected in a fan shape in the width direction of the apparatus main body 110.

  On both sides of the apparatus main body 110, cutout portions 110a cut out from the lower edge are formed in a range in which the spray nozzle 140A is displaced vertically when the apparatus main body 110 is viewed from the side. Further, partition plates 111 for partitioning the notch portions 110 a are attached to both sides of the apparatus main body 110. The lower edge of the partition plate 111 is substantially parallel to the lower edge of the apparatus main body 110, and the partition plate 111 can change the mounting position with respect to the apparatus main body 110, thereby stepwise increasing the height of the lower edge. Can be changed. That is, the partition plate 111 has a function as a scattering restriction part of the first embodiment.

  The operation | work which sprays a herbicide on the ground of the stock base of a crop and a cage | basket along 2 row | line | columns using the liquid spraying apparatus comprised as mentioned above is demonstrated. The liquid spraying device of this embodiment sprays the herbicide from the inside to the outside on the stocks of the crops of the two rows of straw and also sprays the herbicide on the ground between the straws.

  First, as shown in FIG. 10, the worker arranges the liquid spraying device at the ends of the two ridges to be sprayed with the herbicide so that the direction of the cocoon and the traveling direction coincide with each other. At this time, the apparatus main body 110 is arranged between the two ridges. In addition, the length in the width direction of the apparatus main body 110 of the liquid spraying apparatus is shorter than the interval between adjacent ridges. In other words, the crops are planted so that the distance between the two ridges is longer than the length in the width direction of the device main body 110 of the liquid spraying device. Accordingly, when the liquid spraying device is disposed between the two ridges, the apparatus main body 110 is accommodated between the ridges on both sides. The right wheel 120A touches the ground inside the right heel and the left wheel 120B touches the ground inside the left heel.

  The operator drives the pump 51 of the herbicide supply mechanism 50, holds the handle 30, and pushes the liquid spraying device along the direction of the heel. When pushed through the handle 130, the apparatus main body 110 rolls the wheels 120A and 120B and starts moving along the heel. Almost simultaneously, the herbicide begins to be ejected from the three spray nozzles 140A, 140B, 140c.

  The herbicide ejected from the spray nozzle 140 </ b> A is sprayed toward the plant stock of the right straw as the apparatus main body 110 is pushed forward. The herbicide ejected from the spray nozzle 140B is sprayed toward the plant stock of the left straw as the apparatus main body 110 is pushed forward. Further, the herbicide ejected from the spray nozzle 140C is ejected toward the ground between the furrows as the apparatus main body 110 is pushed forward.

Since the herbicide sprayed from the spray nozzle 140A is limited by the function of the partition plate 111, the spray range of the herbicide is sprayed from a low position toward the crop stock. It doesn't stick to the leaf that grows near. Similarly, the range of the herbicide sprayed from the spray nozzle 140B is limited by the function of the partition plate 111, so the spray of the herbicide is sprayed from a low position toward the crop stock. Also, it does not affect the leaves that grow close to the stock.
If the herbicide is applied to the leaves that grow close to the stock, the height of the partition plate 111 relative to the device main body 110 is lowered to adjust the scattering range. On the contrary, if the herbicide does not reach the stock, the height of the partition 111 with respect to the apparatus main body 110 is increased to adjust the scattering range.
In addition, since the range where the herbicide should be sprayed varies depending on the type of crop and the time of growth, it is preferable to change the height of the partition plate 111 according to these conditions and to set the range to be sprayed appropriately. .

  When the apparatus main body 110 is pushed along the heel, the warped portion 150A moves up and down on the undulation of the right heel ground. Then, the spray nozzle 140A moves up and down following the warped portion 150A. Thus, the spraying by the spray nozzle 140A is performed while the height from the ground to the spray nozzle 140A is kept substantially constant. Similarly, when the apparatus main body 110 is pushed along the heel, the warped portion 150B moves up and down on the undulation of the left heel ground. Then, the spray nozzle 140B moves up and down following the warped portion 150B that moves up and down. Thereby, the spraying by the spray nozzle 140B is performed while the height from the ground to the spray nozzle 140B is kept substantially constant. Therefore, the spraying range of the herbicide is limited to the stock base from the ground to a substantially constant height by any of the spraying nozzles 140A and 140B.

  When an operator pushes the liquid spraying device along the direction of the cocoon, the herbicide is sprayed from the inside to the outside of the stock of the two cocoon crops, and the herbicide is sprayed on the ground between each cocoon. Is done.

  When the spraying of the herbicide has been completed as described above along the two ridges, it is folded at the opposite end of the cocoon that has been sprayed, and the cocoon that was on the right side of the apparatus body 10 in the forward path is again A liquid spraying device is arranged at the end of two adjacent ridges so as to be located on the right side. Then, when the liquid spraying device is pushed along the direction of the straw, the herbicide is sprayed on the adjacent two crops of straw as described above. At this time, the herbicide is sprayed on the right side crops from the opposite side of the forward route.

  According to the liquid spraying apparatus configured as described above, an operator can hold the handle 130 and move the apparatus main body 110 along the fence to apply the herbicide toward the plant stock and the ground between the fences. Can be sprayed. Therefore, the working efficiency can be greatly improved as compared with the work using the conventional herbicide.

  According to the liquid spraying device, the warped portions 150A and 150B are moved up and down separately according to the undulation of the ground, and the spray nozzles 140A and 140B are moved up and down separately following the warped portions 150A and 150B. Since the height of the spray nozzle 140A from the ground and the height of the spray nozzle 140B from the ground are substantially constant, even if the ground is rough, weeding is wider than the originally intended range from the spray nozzles 140A and 140B. The herbicide is not sprayed on the contrary, and vice versa. That is, the spraying range of the herbicide is limited to a substantially constant height from the ground by any spraying nozzle 140A, 140B. Therefore, the herbicide can be accurately applied.

  Using the liquid spraying device described in the first embodiment, a test for confirming the effectiveness was performed. The area of the field where the test was carried out was 12 square meters (3 m × 4 m rectangular land), and rotary plowing was carried out during plowing and leveling. In addition, soybean was adopted as a prototype. As the herbicide, it was used as a soil treatment agent (300 ml), two kinds of drugs A and B (both 500 ml), sprayed according to the following patterns, and the situation of the subsequent fields was observed. Specifically, the dry weight of weeds grown in the field after another 30 days from the herbicide application was measured for each type. For comparison, the subsequent field situation was observed in the same manner as described above without using the above two drugs A and B. Furthermore, the situation of the subsequent fields was observed in the same manner as above without using even a soil treatment agent.

I. At the time of sowing, the soil treatment agent was not sprayed, and herbicide A was sprayed using the above liquid spraying device on the 30th day after sowing.
II. At the time of sowing, the soil treatment agent was not sprayed, and the herbicide B was sprayed using the liquid spray device on the 30th day after sowing.
III. At the same time as the sowing, the soil treatment agent was sprayed over the field, and the herbicide A was sprayed on the 30th day after sowing using the liquid spraying device.
IV. At the same time as the sowing, the soil treatment agent was sprayed over the field, and the herbicide B was sprayed using the above liquid spraying device 30 days after sowing. At the same time as sowing, the soil treatment agent was sprayed over the field, and no herbicide was sprayed on the 30th day after sowing.

除草効果の評価の仕方としては、土壌処理剤すら使用せずに播種後６０日が経過した圃場に生育した雑草の乾燥重量を種類ごとに計測し、これらを評価の基準とした。そして、上記の各散布パターンに従って散布を行った圃場に生育した各雑草の乾燥重量の、評価の基準とした雑草の乾燥重量に対する割合を算出した。例えば、散布パターンＩに従って散布を行った圃場に生育したシロザの乾燥重量の、評価の基準としたシロザの乾燥重量（１６８．８グラム）に対する割合は、約１パーセントであった。また、散布パターンＡに従って散布を行った圃場に生育した雑草すべての乾燥重量の、評価の基準とした雑草すべての乾燥重量（５８４．６グラム）に対する割合は、約１パーセントであった。 The observation results of the above test are shown in the table below.

As a method for evaluating the herbicidal effect, the dry weight of weeds grown in a field where 60 days had elapsed after sowing without using even a soil treatment agent was measured for each type, and these were used as evaluation criteria. And the ratio with respect to the dry weight of the weeds used as the reference | standard of evaluation was computed for the dry weight of each weed grown in the field sprayed according to said each spraying pattern. For example, the ratio of the dry weight of Shiroza grown in a field sprayed according to spray pattern I to the dry weight of Shiroza (168.8 grams) as the evaluation standard was about 1 percent. Further, the ratio of the dry weight of all the weeds grown in the field sprayed according to the spray pattern A to the dry weight (584.6 grams) of all the weeds as the evaluation standard was about 1%.

  From the above test results, if the liquid spraying device described in the first embodiment is used, 99% of the weeds that grow in the case of no treatment can be obtained by spraying according to any of the patterns I to IV. The effect of removing was confirmed.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to said embodiment. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention. The present invention is not limited by the above description, and is limited only by the matters described in the claims.

  The present invention relates to a liquid spraying device that sprays liquids such as agricultural chemicals and fertilizers on the grounds of the crop stocks and the furrows while moving along the straws of the crops. The target crops include soybeans, onions, chili, corn, peppers, eggplants, flowering trees and the like.

FIG. 1 is a perspective view showing a liquid spraying apparatus according to a first embodiment of the present invention. FIG. 2 is a plan view showing the device main body of the liquid spraying device of the first embodiment. FIG. 3 is a perspective view showing a main part of the liquid spraying device of the first embodiment. FIG. 4 is a perspective view showing another main part of the liquid spraying device of the first embodiment. FIG. 5 is a plan view showing a state in which the liquid spraying device of the first embodiment is arranged on the farm field along the three ridges. FIG. 6 is a side view showing a state in which the liquid spraying device of the first embodiment sprays the herbicide while moving in the field. FIG. 7 is a perspective view showing a liquid spraying apparatus according to the second embodiment of the present invention. FIG. 8 is a side view showing a part of the apparatus main body of the liquid spraying apparatus of the second embodiment. FIG. 9 is a side view showing a main part of the liquid spraying device of the second embodiment. FIG. 10 is a plan view showing a state in which the liquid spraying device of the second embodiment is arranged on the farm field along the two ridges.

Explanation of symbols

10: apparatus main body, 11A, 12A, 13A, 14A: scattering prevention plate, 11B, 12B, 13B, 14B: scattering prevention plate, 15A, 16A: scattering restriction part, 15B, 16B: scattering restriction part (stock inclination part), 20A, 20B: Wheel, 30: Handle, 31A, 31B: Branch hose, 40A, 40B: Spray nozzle, 50: Herbicide supply mechanism, 110: Device main body, 111: Partition plate (scattering restricting portion), 120A, 120B: Wheel, 130: handle, 140A, 140B, 140C: spray nozzle, 150A, 150B: sled, 152A, 152B: spring body,

Claims (3)

A liquid spraying device for spraying liquids such as agricultural chemicals and fertilizers on the ground between the plant stock and the paddle while moving along the paddle of the crop,
The device body ;
A wheel provided in the apparatus main body and rolling along the flange ;
A handle provided in the apparatus body and operated by an operator ;
Two spray nozzles that are provided in the apparatus main body, and spray the liquid onto the ground between the crop stock and the furrow ;
The apparatus main body is provided with two scattering restriction portions for limiting the range of the liquid sprayed from the spray nozzles in correspondence with the two spray nozzles,
The two spray nozzles are provided apart from each other in the width direction of the apparatus body,
Between the two spray nozzles, two scattering prevention plates are provided separately in the width direction of the apparatus main body,
The two scattering restriction parts also serve as a stock inclination part for inclining the stock in contact with the crop stock when moving along the fence,
One of the two scattering prevention parts is attached to one of the two scattering prevention plates so as to protrude into the gap between the two scattering prevention plates,
The other of the two scattering prevention plates is attached so that the other of the two scattering restriction portions protrudes into the gap between the two scattering prevention plates,
And the two scattering restriction parts are arranged to be shifted from each other in the front-rear direction of the apparatus main body,
As the apparatus main body is pushed forward, the farm products guided between the two scattering prevention plates are inclined by the one scattering restriction portion arranged in front, and liquid is transferred from the one spray nozzle to the stock. Is sprayed,
Subsequently, when the apparatus main body is pushed forward, the farm product is reversely inclined by the other scattering restriction portion arranged behind, and the liquid is sprayed from the other spray nozzle to the stock . The liquid spraying device according to claim 1 ,
The scattering device is a liquid spraying device that is displaceable with respect to the scattering prevention plate . The liquid spraying device according to claim 1,
A liquid spraying apparatus comprising a container for storing the liquid supplied to the spraying nozzle, the container being carried by the operator.

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