Spreading device

Abstract

A spreading device for spreading a liquid on crops arranged in a row in a direction has at least one tubular member extending in the direction, the tubular member having a plurality of through-holes for spreading the liquid flowing therethrough, the spreading device has a moving mechanism that moves the tubular member in the vertical direction.

Description

[0001] Priority information This application claims priority to Japanese Patent Application No. 2023-052920, which is incorporated herein by reference. Technical Field

[0002] This invention relates to a dispensing device, and more particularly to a dispensing device for dispensing liquids such as pesticides to crops. Background Technology

[0003] In the past, based on the viewpoint of reducing agricultural labor, schemes were proposed to make the dispensing of liquids such as pesticides more efficient.

[0004] For example, Patent Document 1 discloses an agricultural greenhouse equipped with irrigation pipes. Typically, the irrigation pipes have through holes for distributing water flowing inside. Furthermore, multiple through holes are formed at predetermined intervals along the length of the irrigation pipe. The irrigation pipes are arranged adjacent to rows of crops. In the agricultural greenhouse of Patent Document 1, the irrigation pipes are located near the roof (i.e., above the crops). This allows for efficient watering over a large area of ​​the agricultural greenhouse.

[0005] In addition, as another method of using irrigation pipes, a distributing device is proposed, which has a moving mechanism that moves the irrigation pipe disposed above the crops in the horizontal direction.

[0006] Moreover, recently, as a method other than using irrigation pipes, a method of using drones such as multi-rotor drones to disperse pesticides from above crops has been proposed (e.g., Patent Document 2).

[0007] Prior art literature Patent documents Patent Document 1: International Publication No. 2016 / 136988; Patent Document 2: Japanese Patent Application Publication No. 2020-199481. Summary of the Invention

[0008] (The technical problem that the invention aims to solve) However, when applying liquids to crops, there are situations where it is necessary to apply the liquid to the entire crop. For example, when applying pesticides, it is necessary to apply the pesticide not only to the surface of the leaves but also to the undersides. Similarly, when applying water, there are situations where it is necessary to apply water to the entire leaf surface, known as foliar spraying, during the hot summer months.

[0009] Furthermore, the purpose of distributing water in agricultural greenhouses is to cool the greenhouse environment. Moreover, for efficient cooling, it is preferable to distribute water over a larger area within the agricultural greenhouse.

[0010] However, existing technologies struggle to fully meet these requirements. For instance, as with the device in Patent Document 1, there's a possibility that the irrigation pipes positioned above crops may not adequately supply liquid to the underside of the leaves. Furthermore, the method in Patent Document 2, which uses multi-rotor drones, is inefficient as it's difficult to simultaneously deploy them over a large area of ​​farmland.

[0011] In view of the above problems, the objective of the present invention is to provide an excellent dispersing device that can efficiently disperse liquids such as pesticides over a large area of ​​farmland, and can disperse liquids on the entire crop, including the surface and underside of the leaves.

[0012] (Technical solutions used to solve technical problems) The dispersing device of the present invention is used to disperse liquid onto crops arranged in a row along one direction. The distributing device has at least one tubular component extending along said one direction. The tubular component has multiple through holes for distributing the liquid flowing inside. The distributing device has a moving mechanism that allows the tubular component to move in the vertical direction. Attached Figure Description

[0013] Figure 1 This is a diagram showing a distribution device according to one embodiment, viewed from one end of the tubular component.

[0014] Figure 2 Viewed from a direction orthogonal to the length of the tubular component Figure 1 A diagram of the distribution device.

[0015] Figure 3 yes Figure 2 An enlarged view of the electric actuator in the distribution device.

[0016] Figure 4 It means Figure 1 The diagram shows the liquid supply and drainage mechanism of the distribution device.

[0017] Figure 5 This is a cross-sectional view of a tubular component, namely an irrigation pipe, and is an example of the shape of the through hole.

[0018] Figure 6 This is a diagram showing a variation of the shape of the through hole in an irrigation pipe.

[0019] Figure 7 This is a diagram showing a variation of the shape of the through hole in an irrigation pipe.

[0020] Figure 8 This is a diagram showing a variation of the shape of the through hole in an irrigation pipe. Detailed Implementation

[0021] Hereinafter, a distribution device according to one embodiment of the present invention will be described with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the distribution device 1 of this embodiment is installed in an agricultural greenhouse H. Multiple ridges R extending in one direction are formed in the agricultural greenhouse H. Crops are planted in each ridge R. That is, crops are planted in the agricultural greenhouse H in a manner forming multiple rows extending in one direction. The length of the ridge R is typically 10m or more, and can also be 100m or more. Furthermore, multiple pathways A are formed adjacent to the ridges R. In addition, regarding each direction in the agricultural greenhouse H, the first horizontal direction extending from the rows formed by the crops is called the depth direction D1, the second horizontal direction orthogonal to the depth direction D1 is called the width direction D2, and the direction orthogonal to both the depth direction D1 and the width direction D2 is called the vertical direction D3. Furthermore, a pathway A formed at any position in the width direction D2 of the agricultural greenhouse H is called the first pathway A1, and a pathway adjacent to the first pathway A1 is called the second pathway A2.

[0023] The distributing device 1 of this embodiment includes: at least one irrigation pipe 10 as a tubular component, which is arranged above the passage A in a manner extending along the depth direction D1; a moving mechanism 20, which moves the irrigation pipe 10 in the vertical direction D3; and a liquid supply and drainage mechanism 30, which supplies liquid such as pesticide to the irrigation pipe 10 and drains the liquid from the irrigation pipe 10 after distributing.

[0024] The moving mechanism 20 of this embodiment includes: a plurality of rope members 21 with one end connected to the irrigation pipe 10; a rod-shaped support member 22 disposed above the irrigation pipe 10 and connected to the other end of the plurality of rope members 21; and an electric device 23 for rotating the support member 22 about its axis. The moving mechanism 20 of this embodiment is configured such that the electric device 23 rotates the support member 22 about its axis, thereby winding the rope members 21 around the support member 22 or feeding the rope members 21 out from the support member 22. Thus, the irrigation pipe 10 can move bidirectionally in the vertical direction D3.

[0025] Furthermore, in this embodiment, the moving mechanism 20 is configured to move the irrigation pipe 10 from at least the lower end of the crop to a position above the height of the crop. More specifically, in this embodiment, considering the maximum height of the crop, which changes as it grows, the moving mechanism 20 is configured to move the irrigation pipe 10 to a position above this maximum height. This eliminates the need to adjust the height of the support member 22 according to the growth of the crop. Alternatively, the moving mechanism 20 can also be configured to move the irrigation pipe 10 to at least the lower end of the crop, and further to a position in contact with the ground.

[0026] The irrigation pipe 10 in this embodiment is made of resin. Examples of resins include polyolefin resins such as polyethylene and polypropylene, and polyester resins such as polycarbonate and polyethylene terephthalate. Polyethylene is preferred, and low-density polyethylene is more preferred. Using resin for the irrigation pipe 10 reduces the load on the agricultural greenhouse H compared to heavier metal irrigation pipes.

[0027] The irrigation pipe 10 of this embodiment includes a pair of flexible, elongated resin sheets, which are bonded together at their ends in the width direction while the resin sheets are overlapping. Thus, the irrigation pipe 10 of this embodiment is flexible. Furthermore, the irrigation pipe 10 of this embodiment has a cylindrical water passage 11 that serves as a flow path for liquids such as water or pesticides. Due to the flexibility of the resin sheets, the water passage 11 is configured such that after liquid is supplied to the flow path, it changes from a flat state to an expanded cylindrical state. Figure 5 (The state of expansion). Furthermore, the water passage 11 is configured to change from an expanded state to a flat state after the supply of liquid to the flow path is stopped. (As shown in the image). Figure 5 As shown, the irrigation pipe 10 of this embodiment has a pair of adhesive portions 12 extending radially outward from the water passage portion 11. Furthermore, the irrigation pipe can also be constructed by bonding the ends of a resin sheet together in the width direction. In this case, the irrigation pipe has a structure with one adhesive portion.

[0028] The irrigation pipe 10 has a plurality of through holes 13 for distributing liquid supplied to the water passage 11 to the outside. The plurality of through holes 13 are formed at predetermined positions along the length of the irrigation pipe 10. Furthermore, the formation positions of the through holes 13 can be determined based on the formation position of the adhesive portion 12. In the distributing device 1 of this embodiment, the irrigation pipe 10 is suspended from the support member 22 via the rope member 21 in the vertical direction D3 along the extending direction of the adhesive portion 12.

[0029] like Figure 4As shown, one end of the irrigation pipe 10 is connected to the supply and drainage mechanism 30 via a supply pipe 40. On the other hand, the other end of the irrigation pipe 10 is closed. The supply pipe 40 of this embodiment has flexibility that allows it to change from a vortex shape to a spiral shape or a straight shape as the irrigation pipe 10 moves from bottom to top.

[0030] The irrigation pipe 10 in this embodiment is configured to distribute liquid in a mist form. For example... Figure 5 as well as Figure 6 As shown, in the cross-section of the irrigation pipe 10 when cut in a direction orthogonal to the length direction, at least a portion of the plurality of through holes 13 are inclined through holes 13a, which are formed such that their center line CL intersects the thickness direction of the water passage portion 11 (i.e., the radial direction when expanded into a cylindrical shape). Furthermore, the plurality of through holes 13 may also include non-inclined through holes, which are formed such that their center line CL is parallel to the thickness direction of the water passage portion 11. Moreover, the plurality of through holes 13 in this embodiment include a first through hole 131 and a second through hole 132 configured to cause the distributed liquid to collide with the outside of the irrigation pipe 10. The combination of the first through hole 131 and the second through hole 132 is sometimes referred to as an X-hole. The X-hole is configured such that the center lines CL of the first through hole 131 and the second through hole 132 intersect outside the thickness direction of the water passage portion 11. More specifically, as... Figures 5-7 As shown, when the water passage section 11 is flat, and the thickness of the water passage section 11 is J (mm), and the distance from the inner surface of the water passage section 11 to the intersection point P of each center line CL is h (the shortest distance), the relationship 0.5 × J (mm) < h (mm) < J + 50 (mm) is satisfied. This allows for the dispersion of a mist-like liquid. Furthermore, the plurality of through holes can be formed solely by the inclined through holes, solely by the non-inclined through holes, or both. Additionally, the plurality of through holes can be formed solely by the X-holes, or solely by non-collision through holes having a center line in the cross-section that does not intersect the center line of any through hole on the outer side of the thickness direction of the water passage section. Moreover, the plurality of through holes can be formed by both the X-holes and the non-collision through holes.

[0031] The diameter of the through hole 13 can be as follows Figure 6 As shown, the diameter can be expanded from the inside to the outside in the thickness direction of the water passage 11, and it can also be like... Figure 7 As shown, the diameter narrows from the inside to the outside in the thickness direction of the water passage 11, and it can also be like... Figure 8Therefore, the value is fixed within the thickness direction. The diameter of the through hole 13 is preferably 0.01 to 3 mm. Furthermore, when the through hole 13 is enlarged or reduced in diameter, its diameter refers to the average of the minimum diameter and the maximum diameter.

[0032] The distribution device 1 of this embodiment has a plurality of irrigation pipes 10. More specifically, the distribution device 1 of this embodiment has a plurality of irrigation pipes 10, including a first irrigation pipe 10a that moves vertically above the first passage A1 and a second irrigation pipe 10b that moves vertically above the second passage A2. That is, the first irrigation pipe 10a and the second irrigation pipe 10b are arranged parallel to each other, separated by rows of crops. In this embodiment, irrigation pipes 10 are arranged between each row of crops, and irrigation pipes 10 are also arranged outside the outermost row of crops in the width direction D2 of the agricultural greenhouse H.

[0033] In this embodiment, one of the plurality of irrigation pipes 10 is adjacent to the ridge R (i.e., the crop) on both sides of the width direction D2 (e.g., Figure 1 The first irrigation pipe 10a is configured to distribute liquid to both sides. That is, the irrigation pipe 10 (first irrigation pipe 10a) has a through hole 13 formed in such a way that the water passage 11 can distribute liquid to both sides. On the other hand, among the plurality of irrigation pipes 10, the irrigation pipe 10 that is adjacent to the ridge R (i.e., the crop) only on one side of the width direction D2 (e.g.) Figure 1 The second irrigation pipe 10b is configured to distribute liquid only to said one side. That is, the irrigation pipe 10 (the second irrigation pipe 10b) has a through hole 13 formed in such a way that the water passage 11 can only distribute liquid to said one side.

[0034] The moving mechanism 20 of this embodiment includes: a plurality of first rope members 21a for suspending the first irrigation pipe 10a to the support member 22; and a plurality of second rope members 21b for suspending the second irrigation pipe 10b to the support member 22. In the distributing device 1 of this embodiment, the first irrigation pipe 10a is arranged in a straight line with the first rope members 21a and the support member 22 on the first passage A1. Furthermore, as... Figure 1As shown, the moving mechanism 20 of this embodiment has a guide member 27 that guides each of the second rope members 21b connected to the support member 22 onto the second passage A2. The guide member 27 of this embodiment is a rod member with a cylindrical side surface 271, and is arranged to extend along the depth direction D1 above the second passage A2. Furthermore, the guide member 27 is positioned above the height of the crop (specifically, the maximum height). Moreover, the guide member 27 is positioned separately from the support member 22 in the width direction D2. By guiding the second rope members 21b through the guide member 27, the second irrigation pipe 10b is positioned above the second passage A2. Thus, because the moving mechanism 20 of this embodiment connects each rope member 21 to a rod-shaped support member 22, it is easy to link the winding and delivery actions of each rope member 21, thereby facilitating the synchronous movement of each irrigation pipe 10 in the vertical direction D3. In addition, compared with the case where support components and guide components are set separately on each rope component, the number of parts can be reduced, thereby reducing the load on the agricultural greenhouse H.

[0035] The support member 22 of this embodiment has a circumferential surface 221, which is wound around each rope member 21 by rotating the support member 22 about an axis. The function of the support member 22 is to move each irrigation pipe 10 upward by winding each rope member 21 around the circumferential surface 221, and to move each irrigation pipe 10 downward by unwinding each rope member 21 from the circumferential surface 221. The circumferential surface 221 of this embodiment is formed in a cylindrical shape and has a substantially constant circumference along the length of the support member 22. Thus, with one rotation of the support member 22, each rope member is wound around the circumferential surface 221 by approximately the same length, or is unwinding from the circumferential surface 221 by approximately the same length. The support member 22 has a length at least corresponding to the irrigation pipe 10. Furthermore, the support member may also be a structure that supports each rope member separately.

[0036] The rope component 21 can also be made of metal wire. For example... Figure 2 As shown, one end, i.e., the upper end, of the rope component 21 can also be fixed to the support component 22 by a fixing component 26 such as a riveting fitting or a wire clamp. The diameter of the rope component 21 is, for example, 0.5 mm or more and 5 mm or less. Because the rope component 21 is relatively thin, vibrations when the rope component 21 is wound onto or sent out of the support component 22 can be suppressed, thereby reducing the load on the agricultural greenhouse H. In addition, the rope component 21 can also be a fiber thread.

[0037] The support member 22 may also have a metal peripheral surface 221. In addition, the guide member 27 may also have a metal side surface 271.

[0038] The electric actuator 23 of this embodiment has a shaft portion 231 connected to one end of a support member 22. The electric actuator 23 is fixed to the agricultural greenhouse H with its shaft portion 231 coaxial with the support member 22. The electric actuator 23 of this embodiment is a parallel shaft type in which the axial direction of the shaft portion 231 is parallel to the output shaft of the reducer.

[0039] like Figure 4 As shown, the supply and drainage mechanism 30 of this embodiment has a first pipe 31 directly connected to a water or pesticide supply source. The first pipe 31 has a first valve 311 serving as a main valve for switching its open and closed states. Furthermore, the supply and drainage mechanism 30 of this embodiment has multiple branch pipes 32 branching off from the first pipe 31 downstream of the first valve 311. Each branch pipe 32 consists of a first branch pipe 321 connected to the irrigation pipe 10 via a supply pipe 40 and a second branch pipe 322 connected to the drainage pipe 50. The number of first branch pipes 321 corresponds to the number of irrigation pipes 10. The supply and drainage mechanism 30 of this embodiment includes: a supply valve 33 for switching the connection state of the fluid between the first branch pipe 321 and the irrigation pipe 10; and a drainage valve 34 for switching the connection state of the fluid between the second branch pipe 322 and the drainage pipe 50. At the start of dispersal, the first valve 311 and the supply valve 33 are open, and the drain valve 34 is closed, thereby supplying liquid to the irrigation pipe 10 and draining the liquid from each through hole 13. After dispersal ends, the first valve 311 is closed, and the supply valve 33 and the drain valve 34 are open, thereby draining the liquid in the irrigation pipe 10 to the outside of the dispersal device 1 via the supply pipe 40 and the drain pipe 50. To facilitate this drainage, the second branch pipe 322 is preferably configured to be positioned below the irrigation pipe 10.

[0040] Liquids distributed in the irrigation pipe 10 can include, for example, water, pesticides, fertilizers, biostimulants, and microbial inoculants.

[0041] According to the distributing device 1 of this embodiment, the multiple irrigation pipes 10 are moved in the vertical direction D3 by the moving mechanism 20 while distributing liquid. Therefore, liquid can be efficiently distributed over a large area of ​​farmland within the agricultural greenhouse H, and liquid can be distributed to the entire crop, including the surface and back of the leaves. More specifically, in this embodiment, the multiple irrigation pipes 10 form a large distribution area along the depth direction D1 and the width direction D2. Moreover, the moving mechanism 20 moves the multiple irrigation pipes 10 in the vertical direction D3 while they are in the distribution state, thereby moving the large distribution area in the vertical direction D3. Therefore, liquid can be efficiently distributed to the entire crop.

[0042] Especially when the liquid is a pesticide, the large area of ​​dispersion moves vertically (D3), thereby effectively controlling pests. More specifically, because the large area of ​​dispersion moves from top to bottom or from bottom to top, pests are driven to the area below or above the crop, thus achieving effective control.

[0043] In addition, when the liquid is water, multiple irrigation pipes 10 can move in the vertical direction D3 while distributing water, that is, a large area of ​​the distribution area moves in the vertical direction D3. Therefore, the mist-like water can more easily cover a large area of ​​the space inside the agricultural greenhouse H, and can efficiently cool the agricultural greenhouse H.

[0044] In addition, when the liquid is fertilizer, biostimulant, or microbial inoculant, multiple irrigation pipes 10 can move in the vertical direction D3 while distributing fertilizer, biostimulant, and microbial inoculant. Thus, fertilizer, biostimulant, and microbial inoculant can be distributed to the entire crop, and foliar distribution can be carried out effectively and efficiently.

[0045] In addition, when it is not necessary to spread the rope, the rope component 21 can be wound around the support component 22 so that the irrigation pipe 10 is moved above the height of the crops so that the irrigation pipe 10 will not become an obstacle to the passage A (and will not hinder other operations such as harvesting).

[0046] Furthermore, when the liquid pesticide is used, at the end of the dispensing process, water is supplied at low pressure while the irrigation pipe 10 is moved downwards as close to the ground as possible by the moving mechanism 20. This allows any pesticide residue remaining in the water passage 11 to flow away through the through hole 13. Moreover, this operation prevents the amount of pesticide needed from being dispensed onto the crops.

[0047] In addition, especially when the liquid is water, after the distribution is completed, with the irrigation pipe 10 in the uppermost position (at least above the second branch pipe 322) by the moving mechanism 20, the drain valve 34 is opened, thereby making it easier to drain the liquid remaining in the irrigation pipe 10 through the drain pipe 50.

[0048] The preferred embodiment of the distributing device will now be described. Furthermore, for structures identical to those described in the above embodiments, the same reference numerals will be used, and detailed descriptions will be omitted.

[0049] like Figure 2As shown, the moving mechanism 20 of this embodiment has a plurality of first connecting members 24 that connect the irrigation pipe 10 and a plurality of rope components 21. Each first connecting member 24 has: an annular or notched annular support portion 241 that supports the irrigation pipe 10 from below; and a hook-shaped or annular fastening portion 242 that extends upward from the support portion 241 and is used to fasten one end (lower end) of the rope component 21. The number of first connecting members 24 corresponds to the number of rope components 21.

[0050] In a more preferred embodiment, the moving mechanism 20 is supported on the agricultural greenhouse H. Specifically, the moving mechanism 20 has at least one second connecting member (not shown) that connects a support column and a support member 22, the support column constituting the agricultural greenhouse H extending in the depth direction D1 and positioned above the support member 22. The moving mechanism 20 preferably has multiple second connecting members to support the support member 22 at multiple locations in the length direction. Each second connecting member may also be a hook-shaped or ring-shaped support portion that supports the support member 22 from below. The portion of this support portion that contacts the circumferential surface 221 of the support member 22 is preferably curved along the circumferential surface 221. Thus, since the support member 22 can rotate smoothly within this support portion, vibration of the irrigation pipe 10 moving in the vertical direction D3 can be suppressed.

[0051] Next, the distribution device of other preferred embodiments will be described.

[0052] like Figure 2 As shown, in this embodiment, each first connecting member 24 has a fixing portion 243, which fixes a tension member 25 for stabilizing the posture of the irrigation pipe 10, the tension member 25 extending along the irrigation pipe 10. In this embodiment, the fixing portion 243 is formed as a hook or ring extending downward from the support portion 241 (opposite to the fastening portion 242).

[0053] Tensioner 25 is fixed to the fixing portion 243 of each of the adjacent first connecting members 24 in the depth direction D1. The function of tensioner 25 is to prevent the support portion 241 of each of the adjacent first connecting members 24 from misaligning in the width direction D2. In addition, tensioner 25 also functions to maintain the parallel state of the adjacent first connecting members 24. Here, when supplying liquid, the irrigation pipe may twist due to the water pressure difference between the side near the liquid supply source, i.e., the supply and drainage mechanism 30, and the side away from the liquid supply source, i.e., the supply and drainage mechanism 30, or the difference in the radial formation position between the through holes arranged along the length direction. In this respect, the distributing device 1 of this embodiment, having tensioner 25, can suppress the twisting of the irrigation pipe 10. That is, it can stabilize the posture of the irrigation pipe 10. Moreover, with this structure, it is easy to maintain the discharge direction of the liquid discharged from each through hole 13 in a predetermined direction.

[0054] The tension member 25 can also be made of fiber-reinforced materials such as fiber-reinforced plastic (FRP). The outer diameter of the tension member 25 can be smaller than the outer diameter of the irrigation pipe 10, for example, 5 to 10 mm. Furthermore, the tension member 25 can achieve the desired effect even if it is a rope-like component.

[0055] Furthermore, the distributing device of the present invention is not limited to the structure of the above-described embodiments. Additionally, the distributing device of the present invention is not limited to the effects described above. Various modifications can be made to the distributing device of the present invention without departing from the spirit of the invention.

[0056] For example, the above embodiment illustrates an irrigation pipe 10 made of resin, but the tubular component of the present invention is not limited to this and may also be a metal pipe. In this case, it is preferable to install a nozzle capable of dispersing a mist of liquid in the through hole.

[0057] Furthermore, the distributing device of the present invention can also be installed in the field. Additionally, the multiple ridges can also include structures formed in an intersecting manner. Moreover, it can also include a structure in which multiple tubular components are arranged in an intersecting manner corresponding to the multiple ridges.

[0058] This disclosure includes the following. (1) A dispensing device for dispensing liquid onto crops arranged in a row along one direction. The distributing device has at least one tubular component extending along said one direction. The tubular component has multiple through holes for distributing the liquid flowing inside. The distributing device has a moving mechanism that allows the tubular component to move in the vertical direction.

[0060] According to this structure, the tubular component extends in one direction, thus enabling efficient liquid distribution over a large area of ​​farmland. Furthermore, since the tubular component is moved vertically while distributing liquid via a moving mechanism, it is particularly effective at distributing liquid over the entire crop, including the surface and underside of leaves. (2) According to the distributing device described in (1) above, the moving mechanism includes: a support member disposed above the tubular member, and a rope member for suspending the tubular member from the support member. The support member has a circumferential surface for the rope member to be wound around.

[0062] According to this structure, the rope component is wound or fed out by rotating the circumferential surface of the support component, thereby enabling the tubular component to move in the vertical direction. Therefore, the device structure is relatively simple and is especially suitable for installation in agricultural greenhouses. (3) According to the distributing device described in (1) or (2) above, it has a first tubular component and a second tubular component. The moving mechanism is configured to enable the first tubular component and the second tubular component to move synchronously in the vertical direction.

[0064] According to this structure, since each tubular component can move synchronously in the vertical direction, it is possible to distribute liquid more efficiently over a large area of ​​farmland. (4) According to the distributing device described in (3) above, the moving mechanism includes: a first rope member for suspending the first tubular member to the support member; a second rope member for suspending the second tubular member to the support member; and a guiding member for guiding the second rope member in a manner that separates the second tubular member from the first tubular member. Both the first rope component and the second rope component are fixed to the circumferential surface of the support component.

[0066] According to this structure, both the first rope component and the second rope component are wound around the same support component or delivered from its circumference, thus simplifying the process compared to having dedicated support components for each rope component. (5) A distributing device comprising: a first tubular member and a second tubular member extending along said direction; and a moving mechanism for moving each tubular member in a vertical direction. The first tubular component and the second tubular component have a plurality of through holes for distributing the liquid flowing inside. The moving mechanism includes: a rod-shaped support member disposed above the first tubular member and the second tubular member in a parallel manner with the first tubular member and the second tubular member; a plurality of first rope members suspending the first tubular member from the support member; a plurality of second rope members suspending the second tubular member from the support member; and a guide member for guiding the second rope members in a manner that separates the second tubular member from the first tubular member in the horizontal direction. The plurality of first rope components are fixed to the first tubular component at intervals along the length direction. The plurality of second rope components are fixed to the second tubular component at intervals along the length direction. The plurality of first rope components and the plurality of second rope components are all fixed to the circumferential surface of the support component. The moving mechanism is configured such that by rotating the support member about an axis, the first rope member and the second rope member are simultaneously wound around the circumference of the support member.

[0068] This type of distribution device allows all the rope components fixed to the tubular component to be directly wound around the support component by rotating the support component. This enables simultaneous variation in the amount of rope components wound around the support component and synchronizes the vertical movement of the first and second tubular components.

[0069] Furthermore, in order to uniformly distribute pesticides or other liquids to all crops arranged in a long row along the height direction, the tubular components moving in the vertical direction must be parallel to each other in a straight line along their length without any local lifting or sagging. That is, the rope components must be suspended from the tubular components in such a way that the resistance acting on each rope component is as equal as possible. To meet this requirement, in the dispensing device described above (5), the rod-shaped support component is arranged above the first and second tubular components in a parallel manner. As a result, the lengths of the rope components suspending the tubular components from the support component are approximately equal, thus making it easier to make the resistance acting on each rope component equal. Moreover, this makes it easier to maintain the straight line of the tubular components moving in the vertical direction, enabling more uniform liquid dispensing.

[0070] Furthermore, when the tubular component is an irrigation pipe made of resin, since the irrigation pipe is flexible, more rope components are needed to suspend it in order to keep it in a straight position. In this case where more rope components are required, the distributing device described above (5) ensures that the resistance acting on each rope component is equal, thus the tubular component is easily kept in a straight position and the liquid is evenly distributed. Moreover, since the tubular component extends in a straight line along its length and moves horizontally in parallel in the vertical direction, the liquid can be distributed effectively and efficiently.

[0071] Furthermore, the distributing device described in (5) has fewer parts, a simpler structure, and higher construction efficiency. This is of great technical significance in the current situation of labor shortage. Moreover, it can also reduce the load on agricultural greenhouses. (6) According to any one of (1) to (5) above, the tubular component is configured to disperse the liquid in a mist.

[0073] According to this structure, since the tubular component can disperse the liquid in a mist, it can efficiently disperse the liquid over a wide area of ​​farmland, and is even more superior for dispersing the liquid to the entire crop. (7) According to any one of (1) to (6) above, the liquid is a pesticide.

[0075] According to this structure, the tubular component extending in one direction disperses pesticides while moving up and down, thereby effectively controlling pests.

[0076] (Explanation of reference numerals in the attached image) 1: Distributing device; 10: Tubular component (irrigation pipe); 10a: First irrigation pipe; 10b: Second irrigation pipe; 11: Water passage section; 12: Adhesive section; 13: Through hole; 13a: Inclined through hole; 131: First through hole; 132: Second through hole; 20: Moving mechanism; 21: Rope component; 21a: First rope component; 21b: Second rope component; 22: Support component; 221: Circumferential surface; 23: Electric actuator; 231: Shaft; 24: First connecting component; 241: Support section; 242: Fastening section. 243: Fixing part, 25: Tensioning element, 26: Fixing component, 27: Guiding component, 271: Side, 30: Liquid supply and drainage mechanism, 31: First piping, 311: First valve, 32: Sub-pipe, 321: First sub-pipe, 322: Second sub-pipe, 33: Liquid supply valve, 34: Liquid drainage valve, 40: Liquid supply piping, 50: Liquid drainage piping, H: Agricultural greenhouse, D1: Depth direction, D2: Width direction, D3: Up and down direction, A1: First passage, A2: Second passage, CL: Centerline, P: Intersection.

Claims

1. A distributing device, wherein, The dispensing device is used to dispense liquid onto crops arranged in a row along one direction. The distributing device has at least one tubular component extending along said one direction. The tubular component has multiple through holes for distributing the liquid flowing inside. The distributing device has a moving mechanism that allows the tubular component to move in the vertical direction.

2. The distributing device according to claim 1, wherein, The moving mechanism includes: a support member disposed above the tubular member, and a rope member for suspending the tubular member from the support member. The support member has a circumferential surface for the rope member to be wound around.

3. The distributing device according to claim 1 or 2, wherein, The distributing device has a first tubular component and a second tubular component. The moving mechanism is configured to enable the first tubular component and the second tubular component to move synchronously in the vertical direction.

4. The distributing device according to claim 3, wherein, The moving mechanism includes: a first rope member for suspending the first tubular member on the support member; a second rope member for suspending the second tubular member on the support member; and a guide member for guiding the second rope member in a manner that separates the second tubular member from the first tubular member. Both the first rope component and the second rope component are fixed to the circumferential surface of the support component.

5. The distributing device according to claim 1 or 2, wherein, The tubular component is configured to disperse the liquid in a mist-like manner.

6. The distributing device according to claim 1 or 2, wherein, The liquid is a pesticide.

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