JP2006296310A - Irrigation tube and structure for installing the irrigation tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for installing an irrigation tube, capable of easily conducting installation work of the irrigation tube and capable of preventing the irrigation tube from slacking. <P>SOLUTION: In this structure 1 for installing the irrigation tube, the irrigation tube 10 is supported by two or more support members 11. Further, each of the support members 11 has a pair of concavities 45, 47 of which the opening sides face each other, the concavities 45, 47 of the support member 11 are positioned in such a manner as to face each other in a vertical direction, and both edges 41, 42 of the irrigation tube 10 are kept by the concavities 45, 47 of the support member 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an installation structure of an irrigation tube used for irrigation work for plant cultivation.

In plant cultivation, watering work is indispensable to prevent soil drying. Traditionally, irrigation has been performed manually by using a hose or the like, but in recent years, an increasing number of farmers adopt a configuration that automatically performs irrigation.
As a method of automatically performing irrigation work, a method is known in which a tube having a water spray hole is previously installed on the ground surface, and water is passed through the tube and water is discharged from the water spray hole to the soil.

An irrigation tube used for the irrigation work as described above is disclosed in Patent Documents 1 and 2 and the like.
A conventional irrigation tube disclosed in Patent Document 1 and the like is obtained by superposing two deformable long sheets and bringing both end portions into close contact along the longitudinal direction. In this irrigation tube, the inner portion of the close contact portion forms a long gap, and water is passed through the gap. In addition, water spray holes that communicate the above-described gap and the outside are formed at predetermined intervals in the sheet. Therefore, the water passed through the gap is discharged to the outside through the water spray holes.

That is, when the water is passed through the irrigation tube as described above, the gap formed between the close contact portions expands, and the inside of the close contact portion of the two sheets becomes cylindrical. Then, the water pressure in the gap gradually increases, and the internal water is discharged from the water spray holes.
As described above, in the irrigation tube, the gap portion swells when water is passed, and the center portion is in a state where the outer side protrudes from the close contact portions on both ends.
On the other hand, when the water is not passed through the irrigation tube, the two long sheets are in close contact with each other, and a long sheet shape is exhibited as a whole. Therefore, it is easy to wind the irrigation tube, and the volume per length can be reduced during storage or sales. In particular, since a long irrigation tube is often used, a tube having a structure in which the above-described two long sheets are overlapped is convenient.
JP 2000-176319 A JP 2004-147564 A

The irrigation tube has a planar sheet shape as a whole when there is no water flow inside. Therefore, for example, when installing the irrigation tube on the ground or the like, the irrigation tube is arranged in a so-called “flat” state. More specifically, the two sheets are arranged so that one of them is in close contact with the ground. Therefore, when water is passed through the irrigation tube, the close contact portions at both ends are positioned in the lateral direction.
Thus, in the prior art, it is normal to install the irrigation tube in a “flat position” state.

  Therefore, even when the irrigation tube is installed in a hollow position away from the ground, it has been installed in a “flat position” in the prior art. For example, in a greenhouse, in order to reduce the difference in irrigation amount depending on the distance and position from the irrigation tube, the irrigation tube is often installed at a predetermined height. It is installed so that the part is located in the horizontal direction (horizontal state).

By the way, when the irrigation tube is installed in a hollow position, it is necessary to hold the irrigation tube with some kind of support member, but the position of the support member is preferably a position that does not interfere with irrigation.
That is, when the water discharged from the irrigation tube hits the support member, irrigation to the soil becomes sparse. Moreover, when the water discharge from the irrigation tube hits the support member, water droplets drip from the support member and cause the surface of the soil to become rough.
Therefore, the irrigation tube is intermittently held by the support member. More specifically, the support member is installed at a constant interval such as 1 m, and the irrigation tube is held by the support member installed at a constant interval in this way.

  However, as described above, the irrigation tube is made by stacking sheets and is easily bent. In particular, the irrigation tube bends because it has a flat sheet shape as a whole when there is no water flow inside. Further, when the water supply to the irrigation tube is stopped in order to end the irrigation work, the irrigation tube is bent by the weight of the water remaining in the irrigation tube. More specifically, as described above, since the irrigation tube is supported by the support member at a predetermined interval, the portion between the support members (the unsupported portion) remains in the irrigation tube. The irrigation tube bends and sags downwards due to the weight of the water to be turned. And by repeated use, the irrigation tube partially moves in the longitudinal direction, and the distribution and opening direction of the watering holes are deviated from the initial positions, and there is a possibility that watering as planned cannot be performed.

  If the irrigation tube is fixed to the support member, the position of the sprinkling holes will not be shifted, but it is not easy to fix the irrigation tube to the support member.

  Accordingly, a first problem of the present invention is to provide an irrigation tube installation structure that facilitates installation of the irrigation tube and can prevent slack in the irrigation tube. .

  Moreover, when performing watering using the above irrigation tubes, water is supplied into the irrigation tubes using a pump or the like. Further, when watering is stopped, the supply of water is stopped by stopping the pump being operated. Immediately after the supply of water is stopped, water remains in the cavity, and the water is sprinkled by the residual pressure. And residual pressure falls gradually by watering.

  While the remaining pressure is large, the watering distance is long, but when the residual pressure is small, the watering distance is gradually shortened. When the residual pressure is further reduced, the water is not fountained, but the water dripping along the surface of the irrigation tube, so that a so-called lid drop occurs.

If this dripping water falls and comes into contact with a crop seedling or the like, the impact may affect the growth, which is particularly likely to occur immediately after sowing or when the seedling is small.
And when there are many such drippings, water will be supplied locally more than the amount which infiltrate into the soil, and it will be in the state where a puddle occurs on the ground surface. Furthermore, the water evaporates and the humidity increases, and mold may be generated, and crops may become ill.

  Then, the 2nd subject of this invention makes it a subject to provide the tube for irrigation which can prevent the drop | overdrop which generate | occur | produces at the time of watering stop.

The invention according to claim 1 for achieving the above-described object is the irrigation tube in which the irrigation tube is supported in a hollow position by a plurality of support members, and the irrigation tube is laid so as to extend in the lateral direction. In the installation structure, the irrigation tube is provided with two or more rows of close contact portions extending in the longitudinal direction, and water is passed through a gap formed between the close contact portions. A watering hole for communicating the gap and the outside is provided so that water flowing in the gap can be discharged to the outside, and one close-contact portion of the irrigation tube is positioned on the support member in the upward direction. And a ground-side support portion that supports the other contact portion so that the other contact portion is positioned in the ground direction, and the irrigation tube has a posture in which the contact portion is in the top-and-bottom direction by the support member. Support A installation structure irrigation tube, characterized in that it is laid to extend in the lateral direction while being.
Here, “laying so as to extend in the horizontal direction” may be a case where it is installed so as to extend in a direction slightly inclined from the horizontal direction.

According to the first aspect of the present invention, the irrigation tube is installed in a “vertically placed” state. The irrigation tube has two or more rows of close contact portions extending in the longitudinal direction, and these close contact portions are arranged in the height direction. Therefore, according to the first aspect of the present invention, the section coefficient of the irrigation tube in the installed posture is large. Therefore, the bending of the irrigation tube is small.
That is, when water is not passed through the irrigation tube, the cross-sectional shape is elongated in the vertical direction, and the deflection due to its own weight or residual water can be reduced.

  The invention according to claim 2 is the irrigation tube installation structure in which the irrigation tube is supported in a hollow position by a plurality of support members, and the irrigation tube is laid so as to extend in the lateral direction. Is provided with two or more rows of close contact portions extending in the longitudinal direction, and water is passed through a gap formed between the close contact portions, and the irrigation tube communicates the gap and the outside. The irrigation tube is provided so that water flowing in the gap can be discharged to the outside, and one close contact portion of the irrigation tube is positioned on the support member in the top direction. There is provided a top side support part that supports one width direction end part and a ground side support part that supports the other width direction end part of the irrigation tube so that the other close contact part is positioned in the ground direction. The irrigation chew The adhesion portion by the support member is a installation structure irrigation tube, characterized in that it is laid to extend in the horizontal direction while being supported in position to be vertical direction.

  In the invention according to claim 2 as well, the irrigation tube is installed in a “vertical position” state. Further, since the close contact portions are arranged in the height direction, the section coefficient of the irrigation tube in the installed posture is large, the bending of the irrigation tube can be reduced, and the irrigation tube can be installed without twisting.

  Further, in the invention according to claim 3, the top side support portion and the ground side support portion are configured by a pair of recesses whose open sides face each other, and the support member is installed such that the recesses face each other in the vertical direction. 3. The irrigation tube installation structure according to claim 1, wherein the irrigation tube is supported by holding the close contact portion of the irrigation tube in the concave portion of the support member.

  In the present invention, the top-side support portion and the ground-side support portion are configured by a pair of recesses facing the open side. In the present invention, the support member is installed so that the concave portion faces in the vertical direction, and the close contact portion of the irrigation tube is held in the concave portion of the support member, so that the bending of the irrigation tube can be reduced.

  The invention according to claim 4 is characterized in that the support member has a ring-shaped portion, and the top-side support portion and the ground-side support portion are provided at positions facing the inner surface of the ring-shaped portion. The irrigation tube installation structure according to any one of claims 1 to 3.

  In the irrigation tube installation structure of the present invention, since the support member has the ring-shaped portion, the rigidity in the vertical direction is high. Therefore, according to the installation structure of the irrigation tube of the present invention, the deflection of the irrigation tube can be further reduced.

  According to a fifth aspect of the present invention, the support member has an arm part that connects the top support part and the ground support part, and a part of the arm part is missing, and the irrigation tube is inserted from the lack part. The irrigation tube installation structure according to any one of claims 1 to 3, wherein the irrigation tube installation structure is possible.

  In the irrigation tube installation structure of the present invention, the operation of attaching the irrigation tube to the support member is easy.

  The invention according to claim 6 is characterized in that long sheets are stacked, and two or more close contact portions extending in the longitudinal direction are provided on the sheet, and water is passed through a gap formed between the close contact portions. In the irrigation tube provided with watering holes for communicating the gap and the outside, and capable of discharging the water in the gap from the watering hole to the outside, any contact portion with the edge of the sheet The irrigation tube is characterized in that a non-contact portion is provided between the two.

  According to the invention described in claim 6, since the non-contact portion is provided between the edge of the sheet and any of the contact portions, the non-contact portion is used to travel from the water spray hole to the sheet surface. Can prevent dripping water from falling.

The invention according to claim 7 is an installation structure of the irrigation tube in which the irrigation tube according to claim 6 is laid so as to extend in the lateral direction, and the non-contact portion is below the gap portion. The irrigation tube installation structure is characterized in that the collar portion is formed by deforming the non-contact portion so as to form a space where the upper portion is open.
Here, “laying so as to extend in the horizontal direction” may be a case where it is installed so as to extend in a direction slightly inclined from the horizontal direction.

  According to the seventh aspect of the invention, since the non-contact portion is deformed so as to form a space where the upper portion is open, the collar portion is formed, so that the water dripping down the sheet surface from the water spray hole Can be prevented by the buttocks.

  The invention according to claim 8 is the irrigation tube installation structure according to claim 7, wherein a holding member capable of holding the deformed state of the non-contact portion is provided.

  According to the eighth aspect of the present invention, it is possible to reliably hold the deformed state of the non-contact portion.

  The invention described in claim 9 is characterized in that the holding member has a ring-shaped portion, and the ring-shaped portion is provided with a non-contact portion storage portion for storing the non-contact portion. It is the installation structure of the irrigation tube.

  According to the ninth aspect of the present invention, since the holding member has the ring-shaped portion provided with the non-contact portion storage portion for storing the non-contact portion, the non-contact portion is held in the deformed state. Can be performed more reliably.

  The invention according to claim 10 is to hold the non-contact portion by sandwiching the non-contact portion storage portion in the vertical direction so that the upper portion of the non-contact portion storage portion avoids the trough portion of the collar portion. The irrigation tube installation structure according to claim 9, wherein the irrigation tube installation structure is provided.

  According to the tenth aspect of the present invention, the upper part of the non-contact portion storage portion is provided so as to avoid the trough portion of the heel portion, so that the water that has flowed into the heel portion of the non-contact portion storage portion. It is possible to prevent clogging at the upper part.

  The invention according to claim 11 is the irrigation tube installation structure according to any one of claims 7 to 10, wherein the vicinity of the edge of the sheet on the side where the non-contact portion is provided is supported. .

  According to the eleventh aspect of the invention, since the vicinity of the edge of the sheet on the side where the non-contact portion is provided is supported, the shape of the non-contact portion can be more reliably maintained.

  It is also possible to provide a wire rod stretched and fixed in the lateral direction so that the vicinity of the edge of the sheet is supported by the wire rod.

The installation structure of the above-mentioned irrigation tube can be adopted by inverting the installation state of the irrigation tube and the holding member so as to replace the top and bottom.
That is, in the invention according to claim 13, in the irrigation tube installation structure according to any one of claims 7 to 12, the installation state of the irrigation tube and the holding member is reversed so that the vertical positions are opposite to each other. The non-contact portion is located above the gap portion, and is held in a state where the non-contact portion is deformed so as to form a space where the lower portion is opened. It is the installation structure of the irrigation tube.

Moreover, the installation structure of the tube for irrigation which located the non-contact | adherence part above the space | gap part is also employable.
That is, the invention according to claim 14 is an irrigation tube installation structure in which the irrigation tube according to claim 1 is laid so that the irrigation tube extends in the lateral direction, and the non-contact portion is a gap portion. It is the installation structure of the tube for irrigation characterized by being hold | maintained in the state located more upwards.

  The invention according to claim 15 is the irrigation tube installation structure according to claim 13 or 14, wherein a sheet is provided above the irrigation tube.

  According to the invention described in claim 15, since the sheet is provided above the irrigation tube, it is difficult to spray water from the upper side of the sheet to the lower side of the sheet, but by using the irrigation tube, Can be easily sprinkled on the underside of the sheet.

  According to a sixteenth aspect of the present invention, the support member or the holding member is provided with a hook, and the support member or the holding member engages the hook with the wire. It is installed by carrying out, It is the installation structure of the tube for irrigation in any one of Claims 1-5, 8-15 characterized by the above-mentioned.

  According to the invention described in claim 16, the support member or the holding member is provided with the hook, and the support member or the holding member is installed by engaging the hook with the wire that is stretched and fixed in the lateral direction. Therefore, it is possible to easily install the irrigation tube.

  The invention according to claim 17 includes a support member, and the support member is provided with a support attachment portion, and the support member is installed by engaging the support member with the support member. The irrigation tube installation structure according to any one of claims 1 to 5 and 8 to 15.

  According to the seventeenth aspect of the present invention, the support member is provided with the column attaching portion, and the column attaching portion is attached and fixed to the column so that the irrigation tube can be easily installed.

Moreover, the irrigation tube can also be laid at the place where the plant is vegetated.
That is, a irrigation tube provided with two or more rows of close contact portions extending in the longitudinal direction is used, with one close contact portion of the irrigation tube positioned in the celestial direction and the other close contact portion positioned in the ground direction. The irrigation tube is laid so as to extend in the horizontal direction in the hollow position, and the irrigation tube is laid so as to extend in the horizontal direction in a state where the close contact portion is supported in a vertical orientation (claimed). Item 18).

  According to the irrigation tube installation structure of the present invention, sagging of the irrigation tube can be prevented. Therefore, the watering pattern is constant and the crop can be irrigated without excess or deficiency.

In addition, by using the non-contact portion of the irrigation tube of the present invention, it is possible to prevent water falling from the water spray hole along the sheet surface. Furthermore, dripping water can be discharged to other places by the non-contact portion so as not to generate a puddle on the surface of the earth, thereby preventing fungi and diseases such as crops.
And when a sheet | seat is provided on the non-contact | adherence part of the irrigation tube, welding with this sheet | seat and the irrigation tube can be prevented, and obstruction | occlusion of a water spray hole can be prevented.

Hereinafter, specific examples of the present invention will be described.
FIG. 1 is an overall view showing an installation structure of an irrigation tube according to a first embodiment of the present invention. 2A and 2B are diagrams showing the irrigation tube, where FIG. 2A is a cross-sectional view in a state where water is not passed through, and FIG. 2B is a cross-sectional view in a state where water is passed through. FIG. 3A is an enlarged perspective view of the main part showing the installation structure of the irrigation tube in a state where water does not flow, and FIG. 3B is an enlarged view of the detachable part. 4A and 4B are diagrams showing the support member, where FIG. 4A is a front view and FIG. 4B is a side view. FIG. 5 is a front view showing a modification of the usage method of the support member. FIG. 6 is an enlarged perspective view of the main part showing the installation structure of the irrigation tube in a state of passing water. FIG. 7 is a perspective view showing a modification of the support member.

  The irrigation tube installation structure 1 of the first embodiment of the present invention is shown in FIG. 1 and includes an irrigation tube 10 and a support member 11. In FIG. 1, the irrigation tube 10 is separated from the piping 92 and joint 94 described later, but these are of course connected during actual use.

  As shown in FIG. 1, in the irrigation tube installation structure 1, the irrigation tube 10 is installed so as to extend in the lateral direction (horizontal direction). The irrigation tube 10 is formed by a plurality of support members 11. It is supported.

As shown in FIGS. 2 (a) and 3 (a), the irrigation tube 10 is made of two long sheets 20, 21 having substantially constant thickness and width, and the sheets 20, 21 The contact portions 22 and 23 are provided in two rows in the longitudinal direction in a state where the two are overlapped. The close contact portions 22 and 23 are provided near the edges 41 and 42 of the sheets 20 and 21. The contact portions 22 and 23 are not interrupted continuously. That is, the close contact portions 22 and 23 are provided at both end portions in the width direction of the sheets 20 and 21 and extend in the longitudinal direction.
The irrigation tube 10 is passed through a gap 25 formed between the contact portions 22 and 23 provided in two rows.

  The width of the sheets 20 and 21 of this embodiment is about 40 mm and the thickness is about 0.5 mm. However, the width and thickness are arbitrary, and an appropriate one should be selected depending on the application. The thickness can be reduced to about 0.1 to 3.0 mm.

  The sheets 20 and 21 are made of a synthetic resin that can be deformed. In this embodiment, polyethylene is used, but other resins and other materials can be used. For example, polyvinyl chloride, Examples thereof include thermoplastic resins such as polyvinylidene chloride, polyamide, and polyester, natural rubber, synthetic rubber, and elastomer. These materials are appropriately selected alone or in combination. If necessary, these materials can contain an ultraviolet ray inhibitor, an antioxidant, a colorant, and other additives.

  Further, as shown in FIG. 2 (b), when water is passed through the irrigation tube 10, the sheets 20, 21 are deformed and swollen in a state where the close contact portions 22, 23 are maintained due to the water pressure at the time of water passing, A cavity 26 having a circular cross section is formed.

  The close contact portions 22 and 23 are formed by so-called heat sealing in which both ends of the sheets 20 and 21 are partially heated and melted. However, the method is not limited to this method. May be.

  Moreover, although the said irrigation tube 10 was manufactured using the two sheets 20 and 21, what has the adhesion parts 22 and 23 can be manufactured by one sheet. For example, it is possible to obtain a structure similar to the structure shown in FIG. 2 by crushing a cylindrical shape formed by inflation molding and closely contacting the bent portions at both ends with a heat seal or the like. As another method, one sheet may be folded, and the bent portion and the vicinity where the edges on both sides overlap may be adhered by heat sealing or the like.

  Further, water spray holes 27 are formed in one sheet 20 of the irrigation tube 10. The water spray hole 27 is a hole that communicates the inside and the outside of the sheet 20, and is provided between the contact portions 22 and 23, and can discharge the water in the cavity 26 (gap portion 25) to the outside.

  The method for forming the water spray holes 27 can be performed by laser light irradiation or the like. Since a specific method is disclosed in Patent Document 1, it will be omitted.

As shown in FIG. 1, a plurality of support members 11 are provided at predetermined intervals (for example, 1 m intervals), and support the irrigation tube 10. The support member 11 is suspended from a suspension line (wire) 13 provided on the upper portion.
A rope, a metal wire, or the like is used as the hanging line 13, and both ends of the hanging line 13 are fixed to a structure having a strength enough to withstand the hanging of the irrigation tube 10.

The support member 11 is a cross-shaped plate member as shown in FIGS. 3 and 4, and includes a ring-shaped portion 49, and four projecting portions 35, 36, 37 and 38 are provided. The four protrusions 35, 36, 37, and 38 described above are provided every 90 ° and protrude in four directions.
Of the four protrusions 35, 36, 37, and 38, the specific protrusion 35 is longer than the other protrusions 36, 37, and 38. Further, the hook 31 is provided on the projecting portion 35, and the hook 30 is also provided on the projecting portion 37 facing the projecting portion 35.

In the irrigation tube installation structure 1 of the present embodiment, as shown in FIG. 3, the hook 30 is engaged with a suspension line (wire) 13, and the support member 11 is suspended on the suspension line 13. When the irrigation tube 10 is installed at a position lower than the suspending line 13, it is suspended using the other hook 31.
Further, as shown in FIG. 5, the two suspension lines 13 can be used for suspension in a state rotated 90 ° from the state shown in FIG. 3.

The support member 11 is provided with a tube storage portion 32. The tube storage portion 32 is a substantially circular space disposed near the center of the support member 11. That is, the support member 11 has a ring-shaped portion 49, and a tube storage portion 32 is provided at the center thereof.
The support member 11 is formed with recesses 45, 46, 47 and 48 extending from the tube storage portion 32 toward the protrusions 35, 36, 37 and 38.
The recessed portion 45 and the recessed portion 47, and the recessed portion 46 and the recessed portion 48 are in positions facing each other.

  Opening portions 45 a, 46 a, 47 a, 48 a on the tube storage portion 32 side of the recesses 45, 46, 47, 48 face the center of the tube storage portion 32. Therefore, using the recess 45 and the recess 47 or the recess 46 and the recess 48, the close contact portions 22 and 23 of the irrigation tube 10 in a state of not allowing water to flow can be held. In addition, the entire irrigation tube 10 that has been swollen by passing water can be held by the tube storage portion 32 of the ring-shaped portion 49.

  The shape and size of the tube storage portion 32 and the recesses 45, 46, 47, 48 match the irrigation tube 10. Specifically, the size of the tube storage portion 32 is somewhat larger than that of the irrigation tube 10 when water is passed, and the distance between the bottom 45b of the recess 45 and the bottom 47b of the recess 47, or the recess The distance between the bottom 46b of 46 and the bottom 48b of the recess 48 is somewhat longer than the width of the irrigation tube 10 when not passing water.

In addition, the ring-shaped portion 49 of the support member 11 is provided with a detachable portion 40 that can open the tube storage portion 32 and facilitate the insertion of the irrigation tube 10 into the tube storage portion 32.
As shown in FIG. 3B, the detachable portion 40 is configured by a locking portion 40a and a locking portion 40b. Here, the locking portion 40 a is provided with a linear rod-like portion 40 c in a circular hole, and is formed on one side 49 a of the ring-like portion 49.
On the other hand, the locking portion 40 b is provided with a linear groove portion 40 d in a circular protrusion, and is formed on the other side 49 b of the ring-shaped portion 49.
The engaging part 40a and the engaging part 40b described above engage with each other to connect the two 49a and 49b, and connect the ring-shaped part 49 in an annular shape.
On the other hand, when the engaging portion 40a and the engaging portion 40b are disengaged and the detachable portion 40 is opened as shown by a two-dot chain line in FIG. 4B, an open portion is formed in a part of the ring-shaped portion 49. Is done. Therefore, by opening the detachable part 40, the irrigation tube 10 can be put into the tube storage part 32 from the middle part of the irrigation tube 10, and the support member 11 can be added later or the support member 11 can be removed after installation. Can be removed.

  The support member 11 is generally made of resin, but other materials such as metal can also be used.

  When the irrigation tube 10 is supported by the support member 11, the entire irrigation tube 10 is placed in the tube storage portion 32. At this time, as shown in FIG. 3, the irrigation tube 10 is in a state where the sheets 20 and 21 are both in a vertical posture, one contact portion 22 is positioned in the top direction, and the other contact portion 23 is disposed in a local area. Position it in the direction. That is, the irrigation tube 10 is placed in a vertical posture and attached to the tube storage portion 32 of the support member 11.

Then, the close contact portions 22 and 23 provided on the edges 41 and 42 of the irrigation tube 10 are placed and held in the recessed portions 45 and 47 provided in the vertical direction in the installed state. That is, one close contact portion 22 is attached to a concave portion (top support portion) 47 positioned above in the installed state, and the other close contact portion 23 is mounted to a recess portion (ground support portion) 45 positioned below.
The irrigation tube 10 and the support member 11 are not fixed.

  When the irrigation tube 10 is put into the tube storage portion 32, the above-described detachable portion 40 is removed. When the insertion of the irrigation tube 10 is completed, the detachable portion 40 is engaged again. In the present embodiment, since the engagement between the locking portion 40a and the locking portion 40b can be removed and an open portion can be formed in a part of the ring-shaped portion 49, the irrigation tube 10 can be easily inserted. Moreover, since the ring-shaped part 49 is connected annularly by engaging the detachable part 40, considerable rigidity can be expected.

In addition, when two suspension lines 13 are used as shown in FIG. 5 and the support member 11 is used in a state rotated by 90 ° from the state shown in FIG. 46 and 48 are used.
As shown in FIG. 5, when the support member 11 is used in a horizontal posture, the concave portion 46 functions as a top side support portion, and the concave portion 48 functions as a ground side support portion.

  In the irrigation tube installation structure 1 according to the present embodiment, the posture of the irrigation tube 10 is set vertically, and the sheet width of the irrigation tube 10 is in the vertical direction (height direction). Therefore, the irrigation tube 10 does not move due to uneven deflection. Further, since the support member 11 and the irrigation tube 10 are not fixed, the installation operation of the irrigation tube 10 can be easily performed.

  Then, as shown in FIG. 1, a pump 90 for feeding water, a pipe 92 having a filter 91 for removing dust mixed in water to be fed to the irrigation tube 10, and one of the irrigation tubes 10. Connect and watering takes place. In addition, if necessary, a valve 93 can be provided on the other side of the irrigation tube 10 to remove dust and the like, and a joint 94 that connects the two irrigation tubes 10 can be provided.

When the pump 90 is operated and water is passed through the irrigation tube 10 through the pipe 92, the irrigation tube 10 is filled with water in the gap 25 as shown in FIG. 2B and FIG. 25 swells and the cross-sectional shape becomes circular.
Then, the water pressure in the gap 25 rises, and the water flowing inside is released from the sprinkling holes 27. Moreover, the wall surface 27a of the water sprinkling hole 27 reduces the momentum of the discharged water, so that water can be sprinkled in the vicinity of the irrigation tube 10 or in a low height space.
In addition, since the contact portions 22 and 23 are continuous without interruption, water does not leak from this portion, and the supplied water is discharged from the sprinkling holes 27.

Further, instead of the support member 11 described above, a support member 24 as shown in FIG. 7 can be used. Compared with the support member 11, the support member 24 is not provided with the protrusions 36 and 38 and has protrusions 35 and 37 extending in the vertical direction. The protrusion 37 is provided with a hook 30. The protrusions 35 and 37 have recesses 45 and 47, respectively.
The support member 24 has a ring-shaped portion 49, and a tube storage portion 32 is provided at the center thereof.

When the irrigation tube 10 is supported by the support member 24, it is the same as the case where the support member 11 is used. Specifically, the entire irrigation tube 10 is placed in the tube storage portion 32, and the irrigation tube 10 One contact portion 22 is positioned in the top direction, and the other contact portion 23 is positioned in the ground direction. That is, the irrigation tube 10 is installed in the tube storage portion 32 of the support member 24 in a vertical posture. Then, the hook 30 is engaged with the suspension line 13, and the support member 11 is suspended on the suspension line 13.
The point that the irrigation tube 10 and the support member 24 are not fixed is similar to the case where the support member 11 is used.

  When inserting the irrigation tube 10 into the tube storage portion 32, the insertion portion 29 is used. The insertion part 29 is a part in which a part of the ring-shaped part 49 is cut, and the irrigation tube 10 can be inserted into the tube storage part 32 from the outside.

  As described above, the support member 24 can support the irrigation tube 10 in the same manner as the support member 11 described above. Further, since the support member 24 has a simpler structure than the support member 11, the support member 24 can be easily manufactured.

Next, the installation structure 2 of the irrigation tube of the 2nd Embodiment of this invention is demonstrated.
FIG. 8 is an overall view showing the installation structure of the irrigation tube according to the second embodiment of the present invention. FIG. 9 is an enlarged perspective view of the main part and an enlarged perspective view of the connecting part showing the installation structure of the irrigation tube in a state where water does not flow. FIG. 10 is an enlarged perspective view of the main part showing the installation structure of the irrigation tube in a state of passing water. 11A and 11B are diagrams showing the support member, where FIG. 11A is a front view and FIG. 11B is a top view.

  The irrigation tube installation structure 2 is shown in FIG. 8 and includes an irrigation tube 10 and a support member 51.

  The irrigation tube 10 used in the irrigation tube installation structure 2 is the same as that used in the first embodiment.

  The supporting member 51 is shown in FIGS. 9 to 11 and has a fixing portion 53 and a column attaching portion 54. The support member 11 is made of resin, but other materials such as metal can also be used.

The column attachment part 54 is a member that can be attached to the column 52, and includes a column insertion part 54a and a connection part 54b. As shown in FIG. 11, the support post insertion portion 54 a has a shape like an end portion of a semi-cylinder, and is provided with a slit 54 c extending in the vertical direction on the back side. Further, the inner diameter of the semi-cylindrical portion is slightly smaller than the outer diameter of the column 52, and the column attachment portion 54 is attached to the column 52 by press-fitting into the column 52 through the slit 54c.
Further, in the present embodiment, a C ring 70 formed of a metal wire is attached to the middle portion of the column attachment portion 54 in the longitudinal direction, and the opening / closing elasticity of the slit 54 c is reinforced by the C ring 70.

The connecting portion 54b is a portion protruding to the opposite side (left side with reference to FIG. 10 (a)) of the column attachment portion 54 and provided at a position off the longitudinal center of the column attachment portion 54. It has been.
A recess 55 is provided inside the connecting portion 54b. The shape of the recess 55 is as shown in FIG. 9B, and is a groove shape that opens on the side surface and the front surface with reference to FIG. 9A, and extends from the front side to the inside of the column attachment portion 54. A portion of the concave portion 55 on the column attachment portion 54 side is slightly enlarged in diameter, and a step portion 55a is formed.

The fixing portion 53 is a member provided with a protruding portion 53a and a tube support portion 53b. The protrusion 53 a is a portion that is inserted into the concave portion 55 of the coupling portion 54 b of the column attachment portion 54, and can connect the fixing portion 53 and the column attachment portion 54. That is, the protrusion 53a is provided with a square tip flange 53c at the end and a root flange 53d at the root. The front end flange 53c and the root flange 53d are connected by a connecting portion 53e.
And the protrusion part 53a of the fixing | fixed part 53 is inserted in the recessed part 55 provided in the connection part 54b by the above-mentioned support | pillar attachment part 54 side. That is, as shown in FIG. 9A, the front portion 54d and the stepped portion 55a of the connecting portion 54b are sandwiched by the tip flange 53c and the root flange 53d of the protruding portion 53a, and the protruding portion 53a of the fixing portion 53 and the column mounting portion 54 The connecting portion 54 b is engaged, and the fixing portion 53 is attached to the column attaching portion 54.

Further, the tube support portion 53 b is provided with a semicircular tube storage portion 56, and concave portions 57 and 58 are provided on the upper side and the lower side of the tube storage portion 56. In the present embodiment, the upper concave portion 57 functions as a top support portion, and the lower concave portion 58 functions as a ground side support portion.
Moreover, the tube storage part 56 functions as an arm part. In other words, the support member 51 of the present embodiment has an upper concave portion 57 that is a top support portion and a lower concave portion 58 that is a ground side support portion. The upper concave portion 57 as the top support portion and the lower concave portion 58 as the ground side support portion are connected by the tube storage portion 56 as the arm portion.
Moreover, the tube storage part 56 which is an arm part is a substantially "C" shape, a part is missing, and the irrigation tube 10 can be inserted from the said missing part.

Moreover, in this embodiment, the recessed part 57 and the recessed part 58 exist in the position which opposes.
Opening portions 57 a and 58 a formed on the tube storage portion 56 side of the recesses 57 and 58 face the center of the tube storage portion 56. Therefore, the close contact portions 22 and 23 of the irrigation tube 10 can be held by the recessed portion 57 and the recessed portion 58. In addition, the entire irrigation tube 10 inflated by passing water can be held by the tube storage portion 56.

  The shapes and sizes of the tube storage portion 56 and the recesses 57 and 58 are matched to the irrigation tube 10. Specifically, the radius of the tube storage portion 56 is slightly longer than the radius of the irrigation tube 10 when water is passed, and the distance between the bottom portion 57b of the concave portion 57 and the bottom portion 58b of the concave portion 58 is when water does not pass. It is slightly longer than the width of the irrigation tube 10.

And the installation structure 2 of the irrigation tube of the 2nd Embodiment of this invention has the supporting member 51 attached to the support | pillar 52 provided in the predetermined space | interval, as shown in FIG. The tube 10 is supported.
In the present embodiment, the tube storage portion 56 is located at a position off the longitudinal center of the column attachment portion 54, and the support member 51 is configured such that the tube storage portion 56 is located on the upper side of the column attachment portion 54 as shown in FIG. Although it is attached to the support column 52 in a posture close to the support member 51, the support member 51 may be attached in the upside down direction.

  When the irrigation tube 10 is supported by the support member 51, the irrigation tube 10 is placed in the tube storage portion 56. The posture of the irrigation tube 10 at this time is a vertical posture as in the previous embodiment, and as shown in FIG. 9, one contact portion 22 of the sheets 20 and 21 is positioned in the top direction, and the other The contact portion 22 is positioned in the ground direction.

  Then, the close contact portions 22 and 23 provided on the edges 41 and 42 of the irrigation tube 10 are inserted into the recessed portions 57 and 58 extending in the vertical direction to hold them. At this time, the irrigation tube 10 and the support member 51 are not fixed.

  Also in the irrigation tube installation structure 2 of the present embodiment, since the posture of the irrigation tube 10 is vertically placed and the sheet width of the irrigation tube 10 is in the vertical direction (height direction), it remains in its own weight or inside. Deflection due to the weight of water is unlikely to occur and the irrigation tube 10 does not move due to uneven sagging. Further, since the support member 51 and the irrigation tube 10 are not fixed, the installation operation of the irrigation tube 10 can be easily performed.

  Then, similarly to the irrigation tube installation structure 1 of the first embodiment described above, a pump 90 for feeding water and a filter 91 for removing dust mixed in the water fed to the irrigation tube 10 are provided. Sprinkling is performed by connecting the pipe 92 and one of the irrigation tubes 10. In addition, if necessary, a valve 93 can be provided on the other side of the irrigation tube 10 to remove dust and the like, and a joint 94 that connects the two irrigation tubes 10 can be provided.

  When the pump 90 is operated and water is passed through the irrigation tube 10 through the pipe 92, the irrigation tube 10, as shown in FIG. The Moreover, the wall surface 27a of the water sprinkling hole 27 reduces the momentum of the discharged water, so that water can be sprinkled in the vicinity of the irrigation tube 10 or in a low height space.

The irrigation tube 10 used in the irrigation tube installation structures 1 and 2 is recommended to have the two sheets 20 and 21 overlapped as described above, but may be one sheet folded. .
In the embodiment described above, the contact portions 22 and 23 are provided in the vicinity of the edges 41 and 42 of the sheets 20 and 21, but they may be formed at positions closer to the inside from the edges of the sheets 20 and 21. In such a case, the portions held by the recesses 45, 46, 47, 48, 57, 58 are outside the contact portions 22, 23.

Next, the irrigation tube installation structures 3, 4 and 5 of the third, fourth, and fifth embodiments of the present invention in which the irrigation tube 10 is installed in a place where a plant is planted (field, farm, etc.) 5 will be described.
FIG. 12 is a perspective view showing the installation structure of the irrigation tube according to the third embodiment of the present invention. FIG. 13: is a perspective view which shows the installation structure of the irrigation tube of the 4th Embodiment of this invention. FIG. 14 is a schematic diagram showing the positional relationship between the branches and the irrigation tube. FIG. 14A is a diagram showing a state where water does not flow in the irrigation tube of the third embodiment, and FIG. It is the figure which showed the state which flowed through the irrigation tube of a), (c) is the figure which showed the comparative example. FIG. 15: is a perspective view which shows the installation structure of the irrigation tube of the 5th Embodiment of this invention. FIG. 16: is a side view which shows the installation structure of the irrigation tube of the 5th Embodiment of this invention.
In the irrigation tube installation structures 3, 4, and 5, the irrigation tube 10 is the same as that described in the above embodiment.

  FIG. 12 shows the irrigation tube installation structure 3 of the third embodiment, in which the irrigation tube 10 is laid in a place where the tea tree 100 is planted. 12 (b), 14 (a), and 14 (b), the irrigation tube 10 of the irrigation tube installation structure 3 is supported by a tea tree branch 101, and The irrigation tube 10 is supported in such a manner that one contact portion 22 is positioned in the top direction, the other contact portion 23 is positioned in the ground direction, and the contact portions 22 and 23 are in the top and bottom direction. .

  In the irrigation tube installation structure 3, as shown in FIG. 12A, a sheet 102 is provided so as to cover the irrigation tube 10 and the tea tree 100. Then, water can be sprayed using the irrigation tube 10 while preventing the sheet 102 from drying inside.

  In the irrigation tube installation structure 3, the close contact portions 22 and 23 are installed in a vertical orientation, so that the irrigation tube 10 is installed in a state where the close contact portions 22 and 23 are in the horizontal direction. The irrigation tube 10 can be easily installed.

  That is, since the branches 101 of the tea tree 100 often extend upward while branching, the branches 101 are densely packed and the space between the branches 101 is narrowed. And when installing the installation structure 3 of the irrigation tube of this embodiment (state which is not water-flowing), since the contact parts 22 and 23 are the attitude | positions which become a top-and-bottom direction, as shown to Fig.14 (a). Even when the horizontal width is narrow, the irrigation tube 10 can be installed without difficulty. Further, when watering is performed after installation (when water is passed through the irrigation tube 10), as shown in FIG. 14B, the irrigation tube 10 pushes the branch 101 in accordance with its width. Watering is possible.

  However, as shown in FIG. 14 (c), when the irrigation tube 10 is disposed on the branch 101 of the tea tree 100, it is installed in a posture in which the contact portions 22 and 23 are in the horizontal direction (lateral direction). Hateful. This is because the branch 101 of the tea tree 100 has a narrow horizontal width, and it is difficult to install the irrigation tube 10 in a posture in which the contact portions 22 and 23 are in the horizontal direction (lateral direction). This is because if the irrigation tube 10 is forcibly installed in a state, the irrigation tube 10 is deformed or bent.

  In the irrigation tube installation structure 3, as in the case of the irrigation tube installation structures 1 and 2, when the water does not pass through the irrigation tube, the contact portions 22 and 23 are in the vertical orientation. The bending due to its own weight can be reduced.

  In addition, the irrigation tube installation structure 3 is provided with one irrigation tube 10. Like the irrigation tube installation structure 4 of the fourth embodiment shown in FIG. 13, the irrigation tube 10 is provided. Can be provided in parallel.

Furthermore, the installation structure 5 of the irrigation tube of 5th Embodiment shown by FIG. 15, FIG. 16 is demonstrated. The place where the irrigation tube installation structure 5 is provided is a pear garden where a pear tree 108 is planted, and the irrigation tube 10 is installed in this pear garden.
The irrigation tube installation structure 5 is provided with a suspending line 113, and the suspending line 113 is in a horizontal direction (parallel to the ground) and substantially perpendicular to each other as shown in FIG. It is stretched all over in two directions.

  And this suspension line 113 is supported by the support | pillar 115, and forms what is called the shelf 114. FIG. The branch 117 of the pear tree 108 is extended along the shelf 114 formed by the hanging line 113 by an operation called attraction, and the branch part 110 of the plant is determined by the weight of the fruit 111 that grows on the branch 117 of the pear tree 108. Can be prevented from breaking. Moreover, since the position where the fruit 111 grows can be made into the substantially constant height by doing in this way, the harvesting operation | work of the fruit 111 can be made easy.

In the irrigation tube installation structure 5, the irrigation tube 10 is installed by using the support member 11 having the hook 30 described above and engaging the hook 30 with the suspension line 113. Accordingly, the irrigation tube 10 is positioned below the shelf 114.
In the irrigation tube installation structure 5, a shelf 114 for attracting the branch 117 by the hanging line 113 is formed. Therefore, the suspension line 113 can be used to both attract the branch 117 and suspend the support member 11. And in the pear garden etc., the shelf 114 is normally provided, The installation structure 5 of the irrigation tube can be manufactured using the hanging line 113 used for this shelf 114.

  In addition, when watering the pear garden, there is a possibility that the quality of the fruit 111 may be lowered if the fruit 111 is splashed with water. In this embodiment, as shown in FIG. It will be arranged on the lower side. And it installs so that the water sprinkled from the tube 10 for irrigation may be sprayed downward, and the water sprinkled can prevent the fruit 111 from splashing.

Next, the installation structure of the irrigation tube using the irrigation tube provided with the non-contact part 60 will be described.
FIG. 17 is an overall view showing the installation structure of the irrigation tube according to the sixth embodiment of the present invention.
18A and 18B are diagrams showing an irrigation tube, where FIG. 18A is a cross-sectional view in a state where water is not passed through, and FIG. 18B is a cross-sectional view in a state where water is passed through. FIG. 19A is an enlarged perspective view of the main part showing the installation structure of the irrigation tube in a state where water does not flow, and FIG. 19B is an enlarged view of the detachable part. FIG. 20 is an enlarged perspective view of a main part of the installation structure of the irrigation tube in a state of passing water. FIG. 21 is a view showing the holding member, in which (a) is a front view and (b) is a side view.

  FIG. 17 shows an irrigation tube installation structure 6 according to a sixth embodiment of the present invention. The irrigation tube installation structure 6 includes an irrigation tube 10 and a holding member 14. In FIG. 17, the irrigation tube 10 is separated from the pipe 92 and joint 94 described later, but these are of course connected in actual use.

  As shown in FIG. 17, in the irrigation tube installation structure 6, the irrigation tube 10 is installed so as to extend in the lateral direction (horizontal direction). The irrigation tube 10 is supported in a hollow state by a plurality of holding members 14 so as to be positioned at a predetermined height from the ground.

  As shown in FIGS. 18 (a) and 19 (a), the irrigation tube 10 is made of two long sheets 20, 21 having a substantially constant thickness and width, and the sheets 20, 21 The contact portions 22 and 23 are provided in two rows in the longitudinal direction in a state where the two are overlapped.

One contact portion 22 is provided in the vicinity of one edge 39 of the sheets 20 and 21. The other contact portion 23 is provided on the inner side of the other edge 41 of the sheets 20 and 21, and the contact portion 23 and the other edge 41 are not in close contact with each other, and the non-contact portion 60 is provided. is doing. Moreover, the contact portions 22 and 23 are not interrupted in the longitudinal direction. That is, the close contact portions 22 and 23 are provided at both end portions in the width direction of the sheets 20 and 21 and extend in the longitudinal direction.
The irrigation tube 10 is passed through a gap 25 formed between the contact portions 22 and 23 provided in two rows.

The width | variety and thickness of the sheet | seats 20 and 21 of this embodiment are arbitrary, A suitable thing can be selected according to a use. And the width | variety of the non-contact part 60 can be made into about 2/3 of the whole width, and the length of the non-contact part 60 can be made the same as the circumference length of the space | gap part 25 of the irrigation tube 10. FIG.
For example, the sheets 20 and 21 having a width of about 120 mm and a thickness of about 0.5 mm can be used, and the thickness can be about 0.1 to 3.0 mm.

The sheets 20 and 21 are made of a synthetic resin that can be deformed. In this embodiment, polyethylene is used, but other resins and other materials can be used. For example, polyvinyl chloride, Examples thereof include thermoplastic resins such as polyvinylidene chloride, polyamide, and polyester, natural rubber, synthetic rubber, and elastomer. These materials are appropriately selected alone or in combination. If necessary, these materials can contain an ultraviolet ray inhibitor, an antioxidant, a colorant, and other additives.
Further, as shown in FIG. 18B, when water is passed through the irrigation tube 10, the sheets 20 and 21 are deformed in a state where the contact portions 22 and 23 are maintained by the water pressure at the time of water flow, and the inside is circular in cross section. The gap portion 25 is formed.

  The close contact portions 22 and 23 are formed by so-called heat sealing, which is performed by partially heating and melting the sheets 20 and 21, but is not limited to this method, and may be formed by other methods. good.

  Moreover, although the said irrigation tube 10 was manufactured using the two sheets 20 and 21, you may manufacture it by one sheet. For example, one sheet is bent, and the contact portions 22 and 23 and the non-contact portion 60 are formed by closely contacting the bent portion and a portion other than the edge of the sheet by heat sealing or the like. May be.

  Further, water spray holes 27 are formed in the sheet 20 of the irrigation tube 10. The water sprinkling hole 27 is a hole penetrating the inside and outside of the sheet 20, and is provided between the close contact portions 22 and 23, and can discharge water in the gap portion 25 to the outside.

  The method for forming the water spray holes 27 can be performed by laser light irradiation or the like. Since a specific method is disclosed in Patent Document 1, it will be omitted.

As shown in FIG. 17, a plurality of holding members 14 are provided at a predetermined interval (for example, 1 m), and support the irrigation tube 10. The holding member 14 is suspended from a suspension line (wire) 13 provided on the upper portion.
A rope or a metal wire is used as the suspension line 13, and both ends of the suspension line 13 are fixed to a structure having a strength enough to withstand the suspension of the irrigation tube 10.

The holding member 14 is a plate-like member as shown in FIGS. 19 to 21, and includes a ring-shaped portion 149, and four projecting portions 35, 36, 37, 38 on the outer peripheral portion of the ring-shaped portion 149. Further, the protruding portion 37 provided below is branched in two directions. The four projecting portions 35, 36, 37, and 38 are provided every 90 °, and project in four directions.
The projecting portion 37 provided below extends downward, branches in the middle, extends toward the upper left side and upper right side, and has a shape like an arrow pointing downward. The left branch portion 37b and the right branch portion 37c And are provided.

The holding member 14 is provided with a tube storage portion 32. The tube storage portion 32 is a substantially circular space arranged near the center of the holding member 14. That is, the holding member 14 has a ring-shaped portion 149, and a tube storage portion 32 is provided at the center thereof.
Then, slits 145, 146, 147, 148 extending from the tube storage portion 32 toward the projecting portions 35, 36, 37, 38 are formed. The slit 145 and the slit 147, and the slit 146 and the slit 148 are provided at opposing positions.

In addition, the slit 147 provided below is provided along the protruding direction of the protruding portion 37, branches in the middle, and extends toward the upper left side and the upper right side (based on FIG. 21A). The slit 147 is connected to the slit portion 147a extending downward and reaching the branch portion 33a, the slit portion 147a and the branch portion 33a being connected to each other and the slit portion 147b extending to the upper left side, and the slit portion 147a and the branch portion 33a being connected to each other. And the slit part 147c extended to the upper right side is provided.
The vertical position of the end point 33b of the slit part 147b and the end point 33c of the slit part 147c are substantially the same, and are provided above the position of the branch part 33a.

Further, the hook 30 of the holding member 14 is provided in the vicinity of the tip of the protruding portion 35 provided on the upper side.
In the irrigation tube installation structure 6 of the present embodiment, as shown in FIG. 19, the holding member 14 is suspended from the suspension line 13 using a hook 30.

  The open portions 145 a and 147 d on the tube storage portion 32 side of the slits 145 and 147 face the center of the tube storage portion 32. Therefore, using the slit 145 and the slit 147, the close contact portions 22 and 23 of the irrigation tube 10 in a state where water does not flow can be held. In addition, the entire irrigation tube 10 inflated by passing water can be held by the tube storage portion 32 of the ring-shaped portion 149.

The shapes and sizes of the tube storage portion 32 and the slits 145 and 147 are matched to the size of the irrigation tube 10. Specifically, the size of the tube storage portion 32 is larger than the vicinity of the gap portion 25 of the irrigation tube 10 during water flow.
Further, the size of the slit 145 is larger than that of the contact portion 22. The length from the opening portion 147d to the end points 33b and 33c via the branch portion 33a is longer than the length of the non-contact portion 60, and the two non-contact portions 60 can be accommodated in the slit 147. The slit 147 serves as a non-contact portion storage portion 79.

In addition, the ring-shaped portion 149 of the holding member 14 is provided with an attachment / detachment portion 40 that can be easily opened when the tube storage portion 32 is opened and put into the tube storage portion 32 of the irrigation tube 10.
As shown in FIG. 19B, the detachable portion 40 is constituted by a locking portion 40a and a locking portion 40b. Here, the locking portion 40 a is provided with a linear rod-shaped portion 40 c in a circular hole, and is formed on one side 149 a of the ring-shaped portion 149.
On the other hand, the locking portion 40b is provided with a linear groove portion 40d in a circular protrusion, and is formed on the other side 149b of the ring-shaped portion 149.
The engaging part 40a and the engaging part 40b described above engage with each other to connect the two sides 149a and 149b, and connect the ring-shaped part 149 in an annular shape.
21B, when the engaging portion 40a and the engaging portion 40b are disengaged to open the detachable portion 40, an open portion is formed in a part of the ring-shaped portion 149. Is done. Therefore, by opening the detachable part 40, the irrigation tube 10 can be put into the tube storage part 32 from the middle part of the irrigation tube 10, and the support member 11 can be added later or the support member 11 can be removed after installation. Can be removed.

  The holding member 14 is generally made of resin, but other materials such as metal can also be used.

  When the irrigation tube 10 is held by the holding member 14, the entire irrigation tube 10 is put into the tube storage portion 32. The posture of the irrigation tube 10 at this time is such that the sheets 20 and 21 are both in a vertical posture as shown in FIG. 19 (a), one contact portion 22 is positioned upward, and the other contact portion. 23 is positioned downward. That is, the irrigation tube 10 is placed in a vertical posture and attached to the tube storage portion 32 of the support member 11.

  Further, the non-contact part 60 is positioned in the slit 147 which is the non-contact part storage part 79. Therefore, the non-contact portion 60 is deformed into a shape that matches the shape of the slit 147, and the non-contact portion 60 is held in this state. Then, one sheet 20 is disposed in the slit portion 147c, and the non-contact portion 60 of the other sheet 21 is disposed in the slit portion 147b so that the edges 41 of the respective sheets 20, 21 project in the lateral direction.

Since the non-contact portion 60 is held by the slit 147, the non-contact portion 60 is held in such a shape that the edge 41 side of the irrigation tube 10 faces upward. Therefore, the non-contact portion 60 forms a space where the upper portion is opened, and the flange portion 65 is formed. The flange portion 65 has a shape like a flange, extends in the longitudinal direction, and is disposed below the gap portion 25. Therefore, the water that has been dripped without being ejected from the water sprinkling hole 27 travels along the surface of the sheet 20 to reach the collar portion 65 and prevents the water from dropping.
Furthermore, by installing the irrigation tube 10 so as to be inclined in any direction with respect to the longitudinal direction, the water that has flowed into the collar portion 65 is guided toward the longitudinal end of the irrigation tube 10. be able to.
The irrigation tube 10 and the support member 11 are not fixed.

  In the irrigation tube installation structure 6 of the present embodiment, the posture of the irrigation tube 10 is set vertically, and the sheet width of the irrigation tube 10 is in the vertical direction (height direction). Therefore, the irrigation tube 10 does not move due to uneven deflection. Further, since the holding member 14 and the irrigation tube 10 are not fixed, the installation operation of the irrigation tube 10 can be easily performed.

  Then, as shown in FIG. 17, a pump 90 for feeding water, a pipe 92 having a filter 91 for removing dust mixed in the water fed to the irrigation tube 10, and one of the irrigation tubes 10 And watering is done. In addition, if necessary, a valve 93 can be provided on the other side of the irrigation tube 10 to remove dust and the like, and a joint 94 that connects the two irrigation tubes 10 can be provided.

When the pump 90 is operated and water is passed through the irrigation tube 10 through the pipe 92, the irrigation tube 10 is filled with water in the cavity 25 as shown in FIG. 18B and FIG. 25 swells and the cross-sectional shape becomes circular.
Then, the water pressure in the gap 25 rises, and the water flowing inside is released from the sprinkling holes 27. Moreover, the wall surface 27a of the water sprinkling hole 27 reduces the momentum of the discharged water, so that water can be sprinkled in the vicinity of the irrigation tube 10 or in a low height space.
In addition, since the contact portions 22 and 23 are continuous without interruption, water does not leak from this portion, and the supplied water is discharged from the sprinkling holes 27.

Further, when the pump 90 is stopped, the water pressure gradually decreases, the momentum of the water ejected from the sprinkling hole 27 gradually decreases, and dripping from the surfaces 20a and 21a of the sheets 20 and 21 of the irrigation tube 10 occurs. drop down.
Then, the dripped water reaches the collar portion 65 formed by the non-contact portion 60 along the surface of the irrigation tube 10 and can prevent so-called dripping. Further, by providing the irrigation tube 10 with an inclination, the irrigation tube 10 can be guided toward the end in the longitudinal direction.

Next, the installation structure 7 of the irrigation tube of the 7th Embodiment of this invention is demonstrated.
FIG. 22 is a front view showing an installation structure of the irrigation tube according to the seventh embodiment of the present invention in a state where water is passed. FIG. 23 is a perspective view showing the installation structure of the irrigation tube. 24 and 25 (a) are perspective views showing a modification of the installation structure of the irrigation tube. FIG. 25B is a partially enlarged cross-sectional view showing a modification of the installation structure of the irrigation tube.

  The irrigation tube installation structure 7 is shown in FIG. 22 and includes an irrigation tube 10 and a holding member 151.

  The irrigation tube 10 used in the irrigation tube installation structure 7 is the same as that used in the sixth embodiment shown in FIG.

As shown in FIGS. 22 and 23, the holding member 151 is a frame-like member, is shaped like a bent plate having substantially the same width and thickness, and includes a ring-shaped portion 149. The ring-shaped portion 149 is provided with a tube storage portion 32 in the vicinity of the center thereof, and further, two non-contact portion storage portions 79 are provided below the tube storage portion 32.
The tube storage portion 32 is an inner space formed by semicircular portions 154a and 154b that are two semicircular frames on the left and right sides, and is larger than the size near the gap portion 25 of the irrigation tube 10 when water is passed. It has a slightly larger circle. Moreover, the semicircle parts 154a and 154b have a gap between the upper side and the lower side of the tube storage part 32, an open part 155 is provided on the upper side, and an open part 156 is provided on the lower side.

The non-contact portion storage portion 79 is a space provided on the lower side of the tube storage portion 32 and protrudes in the lateral direction. Further, the non-contact portion storage portion 79 is connected to the open portion 156 on the lower side of the tube storage portion 32. One non-contact portion storage portion 152 is provided between the lower plate portion 152a and the upper plate portion 152b, and the other non-contact portion storage portion 153 is provided between the lower plate portion 153a and the upper plate portion 153b. It has been.
The shapes of the lower plate portions 152a and 153a are arcs, and the upper side is concave. Further, the upper plate portions 152b and 153b are arranged above the lower plate portions 152a and 153a. The vicinity of the center of the upper plate portions 152b and 153b is raised, and the other portions are shaped along the lower plate portions 152a and 153a. Therefore, the non-contact portion storage portions 152 and 153 formed by the lower plate portions 152a and 153a and the upper plate portions 152b and 153b are wider in the vertical direction near the center than the others.

The non-contact portion 60 is inserted and held between the upper plate portions 152b and 153b and the lower plate portions 152a and 153a of the non-contact portion storage portion 79, but the non-contact portion 60 is along the lower plate portions 152a and 153a. It is deformed into a shape. Since the vicinity of the center of the upper plate portions 152b and 153b is raised, the vicinity of the valley portion 65a on the upper side of the flange portion 65 formed by the non-contact portion 60 is separated from the upper plate portions 152b and 153b.
In other words, the upper plate portions 152 b and 153 b are arranged so as to avoid the valley portion 65 a of the flange portion 65 formed by the non-contact portion 60. The valley portion 65a is a lower portion of the space formed by the flange portion 65 and is near the bottom.

  The lower plate portion 152a and the upper plate portion 152b, and the lower plate portion 153a and the upper plate portion 153b are continuous. Further, the lower plate portion 152a and the lower plate portion 153a are continuous. Further, the semicircular portion 154a and the upper plate portion 152b, and the semicircular portion 154b and the upper plate portion 153b are continuous.

The structure on the upper side of the holding member 151 is shown in FIGS. 22 and 23, and plate portions 159 and 159 provided with through holes 158 are connected to the upper sides of the semicircular portions 154a and 154b, respectively. There is a gap between the plate portions 159 and they are slit-shaped. The direction of the through hole 158 of the plate portion 159 is perpendicular to the direction in which the irrigation tube 10 extends, and the through holes 158 of the two plate portions 159 are substantially at the same position. Then, as shown in FIGS. 22 and 23, the string-like member 157 can be inserted into the through holes 158 and 158 and suspended from the suspension line 13.
Moreover, the irrigation tube 10 can be inserted from between the plate portions 159 and 159.

  The holding member 151 is made of resin, but other materials such as metal can be used.

  In the irrigation tube installation structure 7 of this embodiment, when the irrigation tube 10 is held by the holding member 151, the entire irrigation tube 10 is placed in the tube storage portion 32. At this time, as shown in FIGS. 22 and 23, the irrigation tube 10 is in a vertical posture with the sheets 20 and 21 being in a vertical position, with one close contact portion 22 positioned upward, and the other close contact portion 23. (Downward). That is, the irrigation tube 10 is placed in a vertical posture and is placed in the tube storage portion 32 of the holding member 151.

  Further, the non-contact portion 60 is disposed in one and the other non-contact portion storage portions 152 and 153. Since the lower plate portions 152a and 153a of the non-contact portion storage portions 152 and 153 have a concave shape on the upper side, the non-contact portion 60 is held in a state of being deformed so as to have a concave shape on the upper side. Then, the non-contact portion 60 of one sheet 20 is positioned in the non-contact portion storage portion 153 and the non-contact portion 60 of the other sheet 21 is positioned in the non-contact portion storage portion 152, and the edges 41 of the respective sheets 20 and 21 are positioned. It will be in the state which protrudes toward the side of both sides. The irrigation tube 10 and the holding member 151 are not fixed.

  As shown in FIGS. 22 and 23, the non-contact part 60 is placed in one and the other non-contact part storage parts 152, 153, and forms a space where the upper part opens, and protrudes downward. A collar portion 65 is formed. The collar portion 65 is shaped like a collar and extends in the longitudinal direction. And the water which flowed into the collar part 65 can be guide | induced toward the end of the longitudinal direction of the irrigation tube 10 by installing the irrigation tube 10 so that it may incline with respect to a longitudinal direction.

  Similar to the irrigation tube installation structure 6 of the sixth embodiment described above, the irrigation tube installation structure 7 is less likely to bend due to its own weight when water is not passed, and the holding member 15 and the irrigation tube 10 Therefore, the installation work of the irrigation tube 10 can be easily performed.

  Further, the irrigation tube installation structure 7 is mixed with the pump 90 for feeding water and the water fed into the irrigation tube 10, similarly to the irrigation tube installation structure 6 of the sixth embodiment described above. A pipe 92 having a filter 91 that removes dirt and the like is connected to one of the irrigation tubes 10, and the pump 90 is operated so that water is passed through the irrigation tube 10 through the pipe 92. Can do.

Further, when the pump 90 is stopped, the water pressure gradually decreases, the momentum of the water ejected from the sprinkling holes 27 gradually decreases, and from the surface which is the outer side 20a, 21a of the sheets 20, 21 of the irrigation tube 10. Dripping down.
Then, the dripped water travels along the surface of the irrigation tube 10, reaches the collar portion 65 formed by the non-contact portion 60, and is guided toward the end of the irrigation tube 10 in the longitudinal direction. It is possible to prevent so-called lid dropping, which drops around just below 27.

  And also in the installation structure 7 of the irrigation tube of this embodiment, by installing the irrigation tube 10 so that it may incline with respect to a longitudinal direction, the water which flowed into the collar part 65 is made to flow in the irrigation tube 10. It can be directed towards the longitudinal edge. Further, the non-contact portion storage portions 152 and 153 of the one and the other holding members 151 are wider in the vertical direction near the center than the other, and the upper plate portions 152b and 153b are the valley portions 65a of the flange portion 65. Therefore, the water that has flowed into the flange portion 65 is not blocked by the upper plate portions 152b and 1153b of the holding member 151, and can be reliably guided.

  In the irrigation tube installation structures 6 and 7 according to the sixth and seventh embodiments described above, the shape of the non-contact part 60 is held by the non-contact part storage part 79 provided in the holding members 14 and 151, and the heel part In addition to this, as shown in FIGS. 24 and 25, auxiliary support portions 66 and 67 can be provided between the holding members 14 and 151.

  The auxiliary support portions 66 and 67 shown in FIGS. 24 and 25 are edges 41 on the non-contact portion 60 side of the irrigation tube installation structures 6 and 7 of the irrigation tube of the sixth and seventh embodiments described above. It supports the vicinity.

The auxiliary support portions 66 and 67 can prevent the edge 41 on the non-contact portion 60 side from sagging, and can reliably guide the water flowing to the flange portion 65.
That is, since the holding members 14 and 151 are arranged at predetermined intervals to support the irrigation tube 10, there is a possibility that the irrigation tube 10 may sag. And when this slack is large, the maintenance of the shape of the collar part 65 becomes incomplete, and there exists a possibility that the position of the edge 41 of the irrigation tube 10 may become low. However, it is possible to maintain the shape of the collar portion 65 by the auxiliary support portions 66 and 67, and it is possible to reliably guide the water flowing to the collar portion 65 without overflowing from the edge 41 of the irrigation tube 10.

The auxiliary support 66 is shown in FIG. The auxiliary support portion 66 is provided with a string-like member 170 and a support wire 69 that is a wire, and a through hole 68 is provided in the vicinity of the edge 41 on the non-contact portion 60 side of the irrigation tube 10.
The string-like member 170 has an annular shape while being inserted through the through hole 68. Further, a support line 69 is disposed above the through hole 68, and the support line 69 passes through the inside of the string-like member 170 in an annular shape. Note that the support wire 69 is stretched and fixed in the lateral direction, and the same wire as the hanging wire 13 described above can be used.
The weight of the non-contact portion 60 and the weight of the water flowing through the collar portion 65 can be supported by the support line 69.

  Further, the auxiliary support portion 67 is shown in FIGS. 25 (a) and 25 (b). The auxiliary support portion 67 is provided with a support wire 72 that is a wire, and a deformable portion 71 is provided in the vicinity of the edge 41 on the non-contact portion 60 side of the irrigation tube 10. The deforming portion 71 is a portion that protrudes in a direction opposite to the protruding direction of the flange portion 65 and is bent so as to protrude upward, and the lower side is recessed. The support wire 72 is stretched and fixed in the lateral direction.

In the auxiliary support portion 67, a deformation maintaining member 89 is provided in order to maintain the deformation state of the deformation portion 71 in the vicinity of the edge 41. The deformation maintaining member 89 is provided with a concave portion 89a having a shape slightly larger than the outer shape of the support line 72, and as shown in FIGS. 25 (a) and 25 (b), the non-contact state is wound around the support line 72 around the concave portion 89a. The support line 72 and the edge 41 of the non-contact part 60 are fixed so as to embrace the edge 41 of the part 60.
When the deformation maintaining member 89 is fixed, the deformation maintaining member 89 is supported by the support line 72 so that the edge 41 of the non-contact portion 60 wound around the support line 72 enters from the opening 89 b of the deformation maintaining member 89. 72.

A support line 72 is disposed below the deformable portion 71, and the deformable portion 71 is supported by the support line 72.
Therefore, as with the auxiliary support portion 66, the auxiliary support portion 67 can prevent the edge 41 on the non-contact portion 60 side from sagging, and the weight of the non-contact portion 60 and the weight of the water flowing to the collar portion 65 can be supported. 72, and the water flowing to the flange 65 can be reliably guided.

In the irrigation tube installation structures 6 and 7 according to the above-described embodiment, the flange portion 65 formed by the non-contact portion 60 and the flange member 75 is provided below the gap portion 25 of the irrigation tube 10. However, it is possible to use it upside down (top and bottom).
FIG. 26 is a perspective view showing a modification of the installation structure of the irrigation tube.

  In the irrigation tube installation structure 8 shown in FIG. 26, the irrigation tube 10 having the non-contact part 60 is used and the irrigation tube 10 is installed with the non-contact part 60 facing upward. The two non-contact portions 60 protrude upward and are bent and held so that the edge 41 faces sideways. Although holding of the shape of the non-contact portion 60 is not illustrated, the holding members 14 and 151 described above can be used, and the irrigation tube installation structures 6 and 7 are formed with the top and bottom reversed. Can do.

As shown in FIG. 26, a sheet 82 may be provided in a field where seedlings 81 are planted. In such a case, since sufficient irrigation cannot be performed from above the sheet 82, the irrigation tube 10 may be installed under the sheet 82.
However, when the sheet 82 comes into contact with the water spray hole 27 of the irrigation tube 10 and the sheet 82 is melted by sunlight or the like, the water spray hole 27 may be blocked.

  Therefore, an irrigation tube installation structure 8 as shown in FIG. 26 can be used. In the irrigation tube installation structure 8, a seedling 81 provided between the cocoon 80 and the sheet 82 and planted in the cocoon 80 extends outward from the sheet 82 provided with the opening 82a. As the sheet 82, a black vinyl sheet is usually used, and the lower side of the sheet 82 can be kept warm.

  Then, water can be sprayed on the ridge 80 using the irrigation tube installation structure 8. Further, since the sheet 82 can be prevented from coming into contact with the water spray hole 27 of the irrigation tube 10 by the non-contact portion 60, the sheet 82 is melted by sunlight or the like and the water spray hole 27 is blocked. Can be prevented.

  The sheets 20 and 21 used for the irrigation tube 10 of the irrigation tube installation structure 6, 7, and 8 may be a combination of two sheets or a single sheet folded.

It is a general view which shows the installation structure of the irrigation tube of the 1st Embodiment of this invention. It is a figure which shows the tube for irrigation, (a) is sectional drawing of the state which does not let water flow, (b) is sectional drawing of the state which let water flow. (A) is the expansion perspective view of the principal part which shows the installation structure of the tube for irrigation of the state which does not let water flow, (b) is the figure which expanded the attaching / detaching part. It is a figure which shows a supporting member, (a) is a front view, (b) is a side view. It is a front view which shows the modification of the usage method of a supporting member. It is an expansion perspective view of the principal part which shows the installation structure of the irrigation tube of the state which let water flow. It is the perspective view which showed the modification of the supporting member. It is a general view which shows the installation structure of the irrigation tube of the 2nd Embodiment of this invention. It is the expansion perspective view of the principal part which shows the installation structure of the tube for irrigation of the state which does not let water flow, and the expansion perspective view of a connection part. It is an expansion perspective view of the principal part which shows the installation structure of the irrigation tube of the state which let water flow. It is a figure which shows a supporting member, (a) is a front view, (b) is a top view. It is a perspective view which shows the installation structure of the irrigation tube of the 3rd Embodiment of this invention. It is a perspective view which shows the installation structure of the irrigation tube of the 4th Embodiment of this invention. It is the schematic diagram which showed the positional relationship of the branch and the irrigation tube, (a) is the figure which showed the state which does not let water flow in the irrigation tube of 3rd Embodiment, (b) is the irrigation of (a) It is the figure which showed the state which let water flow to the tube for works, (c) is the figure which showed the comparative example. It is a perspective view which shows the installation structure of the irrigation tube of the 5th Embodiment of this invention. It is a side view which shows the installation structure of the irrigation tube of the 5th Embodiment of this invention. It is a general view which shows the installation structure of the irrigation tube of the 6th Embodiment of this invention. It is a figure which shows the tube for irrigation, (a) is sectional drawing of the state which does not let water flow, (b) is sectional drawing of the state which let water flow. (A) is the expansion perspective view of the principal part which shows the installation structure of the tube for irrigation of the state which does not let water flow, (b) is the figure which expanded the attaching / detaching part. It is an expansion perspective view of the principal part of the installation structure of the irrigation tube of the state which let water flow. It is a figure which shows a holding member, (a) is a front view, (b) is a side view. It is a front view which shows the installation structure of the state through which the irrigation tube of the 7th Embodiment of this invention let water flow. It is a perspective view which shows the installation structure of the tube for irrigation. It is a perspective view which shows the modification of the installation structure of the irrigation tube. It is a figure which shows the modification of the installation structure of the irrigation tube, (a) is a perspective view, (b) is a partially expanded sectional view. It is a perspective view which shows the modification of the installation structure of the irrigation tube.

Explanation of symbols

1, 2, 3, 4, 5, 6, 7, 8 Irrigation tube installation structure 10 Irrigation tube 11, 51 Support member 20, 21 Sheet 22, 23 Adhering portion 25 Space portion 27 Sprinkling hole 27a Wall surface 28 In the hole Projection part 30, 31 Hook 32 Tube storage part 41, 42 Edge 45 Concavity (ground side support part)
46 Concave part 47 Concave part (top support part)
48 recess 57 recess (top support)
58 Concave part (ground side support part)
45a, 46a, 47a, 48a, 57a, 58a Opening portion 49 Ring-shaped portion 54 Strut mounting portion 14, 151 Holding member 13 Suspension wire 60 Non-adherent portion 65 Gutter

Claims (18)

  In the irrigation tube installation structure in which the irrigation tube is supported in a hollow position by a plurality of support members, and the irrigation tube is laid so as to extend in the lateral direction, the irrigation tube has two or more rows extending in the longitudinal direction. A close contact portion is provided, and water is passed through a gap formed between the close contact portions, and the irrigation tube is provided with a water spray hole that communicates the gap and the outside. Water that can flow to the outside, and the support member supports the one side of the irrigation tube so that it is positioned in the top direction, and the other side of the support member is positioned in the ground direction. The irrigation tube is laid so as to extend in a lateral direction in a state in which the close contact portion is supported in a vertical orientation by the support member. When Installation structure of the irrigation tube that.   In the irrigation tube installation structure in which the irrigation tube is supported in a hollow position by a plurality of support members, and the irrigation tube is laid so as to extend in the lateral direction, the irrigation tube has two or more rows extending in the longitudinal direction. A close contact portion is provided, and water is passed through a gap formed between the close contact portions. Water that can flow to the outside, and the support member supports a ceiling that supports one end in the width direction of the irrigation tube so that one contact portion of the irrigation tube is positioned in the ceiling. A ground-side support portion that supports the other widthwise end of the irrigation tube is provided so that the side support portion and the other contact portion are positioned in the ground direction, and the irrigation tube is the support member By dense Installation structure of watering tube which part is characterized in that it is laid to extend in the horizontal direction while being supported in position to be vertical direction.   The top side support portion and the ground side support portion are configured by a pair of recesses facing the open side, and the support member is installed so that the recesses face each other in the vertical direction, and the close contact portion of the irrigation tube is attached to the support member. The irrigation tube installation structure according to claim 1 or 2, wherein the irrigation tube is supported by being held in a recess.   The support member includes a ring-shaped portion, and a top-side support portion and a ground-side support portion are provided at positions facing the inner surface of the ring-shaped portion. The installation structure of the irrigation tube as described.   The support member has an arm part that connects the top support part and the ground support part, and the arm part is partially missing, and the irrigation tube can be inserted from the lack part. The installation structure of the irrigation tube in any one of claim | item 1 thru | or 3. Elongated sheets are stacked, the sheet is provided with two or more rows of close contact portions extending in the longitudinal direction, and water is passed through a gap formed between the close contact portions. In the irrigation tube that is provided with a watering hole that communicates with the outside, and can discharge the water in the gap from the watering hole to the outside,
A irrigation tube, wherein a non-contact portion is provided between an edge of the sheet and any of the contact portions. An irrigation tube installation structure for laying the irrigation tube according to claim 6 so that the irrigation tube extends laterally,
The irrigation tube installation structure, wherein the non-contact portion is located below the gap portion, and the non-contact portion is deformed so as to form a space where the upper portion is open.   The irrigation tube installation structure according to claim 7, wherein a holding member capable of holding the deformed state of the non-contact portion is provided.   9. The irrigation tube installation structure according to claim 8, wherein the holding member has a ring-shaped portion, and the ring-shaped portion is provided with a non-contact portion storage portion for storing the non-contact portion.   The non-contact portion storage portion holds the non-contact portion sandwiched in the vertical direction, and the upper portion of the non-contact portion storage portion is provided so as to avoid the trough portion of the buttocks. The installation structure of the irrigation tube of Claim 9.   The irrigation tube installation structure according to any one of claims 7 to 10, wherein the vicinity of the edge of the sheet on the side where the non-contact portion is provided is supported.   The irrigation tube installation structure according to claim 11, wherein a wire rod stretched and fixed in a lateral direction is provided, and the vicinity of the edge of the sheet is supported by the wire rod. In the installation structure of the irrigation tube according to any one of claims 7 to 12, the installation state of the irrigation tube and the holding member is reversed and changed so that the upper and lower positions are opposite,
The irrigation tube installation structure, wherein the non-contact portion is positioned above the gap and is held in a state where the non-contact portion is deformed so as to form a space where the lower portion is opened. An irrigation tube installation structure for laying the irrigation tube according to claim 1 so that the irrigation tube extends laterally,
The installation structure of the irrigation tube, wherein the non-contact portion is held in a state of being positioned above the gap portion.   The irrigation tube installation structure according to claim 13 or 14, wherein a sheet is provided above the irrigation tube.   A wire rod stretched in a lateral direction and fixed; a hook is provided on the support member or holding member; and the support member or holding member is installed by engaging the hook with the wire rod. The installation structure of the irrigation tube according to any one of claims 1 to 5 and 8 to 15.   The support member or the holding member is provided with a support column mounting portion, and the support member or the holding member is installed by engaging the support column mounting portion with the support column member. The installation structure of the irrigation tube in any one of claim | item 1 -5 and 8-15. In the laying structure of the irrigation tube that lays the irrigation tube so as to extend laterally in the hollow position at the place where the plant is vegetated,
The irrigation tube is provided with two or more rows of close contact portions extending in the longitudinal direction, and one close contact portion of the irrigation tube is positioned in the top direction, and the other close contact portion is supported by the plant in the ground direction. The irrigation tube installation structure is characterized in that the irrigation tube is laid so as to extend in the lateral direction in a state in which the close contact portion is supported in a posture in the vertical direction.

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