JP2004016030A - Stretch device for exterior covering film for greenhouse and stretch method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stretch device for an exterior covering film for a greenhouse enabling securely and easily stretching the exterior covering film to be set in an openable and closable manner so as to be imparted with a desired tension without damage, and to provide a stretch method for the exterior covering film for the greenhouse using the stretch device. <P>SOLUTION: The stretch method comprises connecting the base edge of a first belt member 11 to a rolling pipe 40 fixed with the edge of the exterior covering film 30 and setting a loop part 11c as a part to-be-engaged on a free edge. The hook member 12d of a second belt member 12 constituting a tension-imparting member is engaged with the loop part 11c so as to adjust the length of the second belt member 12. As a result, the exterior covering film 30 can be securely and easily stretched without damage. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a greenhouse covering film stretching apparatus using a plastic film such as a vinyl film, a polyolefin-based film, or a fluorine-based film as a covering, and a method for stretching the greenhouse covering film.
[0002]
[Prior art]
A greenhouse structure is known in which the above-mentioned various plastic films are used as a jacket, and can be opened from the vicinity of the upper side of the greenhouse to the vicinity of the center of the ceiling to function as a ventilation member. In such a structure, in order to serve both as a function as a jacket and a function as a ventilation member, in a fully closed state or in a state where a predetermined amount is opened and fixed, fluttering or the like caused by strong wind or the like is minimized. In order to reduce the size, it is necessary to apply a predetermined tension to stretch the cable. When the opening operation is performed, it is necessary to release the tension to enable winding.
[0003]
For this reason, for example, Japanese Unexamined Patent Publication (Kokai) No. 62-264279 discloses that a winding pipe is provided at an end of a plastic film functioning as a ventilation member, and a cross member having a groove is provided near an upper side of a greenhouse. There is known a structure in which the groove is provided downward along the longitudinal direction of the greenhouse. The plastic film functioning as a ventilation member can be opened by being wound up in the ceiling direction by the winding pipe, and when the plastic film is rewound, that is, when the plastic film is closed, the winding pipe is engaged with the groove of the bar member. A predetermined tension is applied to the plastic film in combination.
[0004]
Japanese Patent Application Laid-Open No. 61-38077 discloses that one end is connected to an immovable portion such as a pipe material erected on the ground, and a hook-shaped engaging portion provided at the other end is engaged with a winding pipe. A means for applying tension by pulling downward is disclosed.
[0005]
[Problems to be solved by the invention]
However, in the case of the structure disclosed in Japanese Patent Application Laid-Open No. Sho 62-264279, a winding pipe having a predetermined length is attached to a bar member having a predetermined length provided along the longitudinal direction of the greenhouse. Due to the structure to be engaged, deformation of the cross section member due to deformation of the greenhouse, elongation or the like of the plastic film constituting the ventilation member causes portions where a desired tension can be applied and portions where the desired tension cannot be applied. . For this reason, if the plastic film is closed for a long time, a gap may be formed even when the plastic film is closed, and it may not be possible to prevent fluttering due to wind or the like.
[0006]
Japanese Patent Application Laid-Open No. 61-38077 discloses a method in which a hook-shaped engaging portion is engaged with a winding pipe via the plastic film while the plastic film is wound around the winding pipe. Due to the structure, the engagement state is likely to be unstable due to the elasticity of the wrapped plastic film, and may be disengaged by strong wind or the like. Further, since the plastic film directly contacts the hook-shaped engaging portion, the plastic film is easily damaged by friction between the two.
[0007]
In addition, a means for preventing flapping by wrapping a synthetic resin band member (my car wire) having a width of about 1 cm on the upper surface of the plastic film functioning as a ventilation member can be considered. In this case, the band member is stretched. If the condition is too strong, it is difficult to open the plastic film, and if it is too weak, it is difficult to suppress the fluttering of the plastic film. For this reason, the adjustment of the tension of the band member is troublesome, and the band member is difficult to dispose because it is wrapped around the ceiling of the greenhouse so as to get over the ceiling.
[0008]
The present invention has been made in view of the above points, and provides an outer film for a greenhouse in which a cover film that can be opened and closed can be reliably and easily applied with a desired tension without damaging the film. An object of the present invention is to provide a film stretching apparatus and a method for stretching a greenhouse jacket film using the film stretching apparatus.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention according to claim 1 is a stretching device for a greenhouse jacket film which constitutes a greenhouse jacket and is opened and closed by a winding pipe to function as a ventilation member. hand,
A belt member having a predetermined length connected to the winding pipe at a base end thereof and having an engaged portion at a free end thereof;
A length-adjustable tension applying member having an engaging portion that engages with the engaged portion of the belt member,
By adjusting the length in a state where the engaging portion of the tension applying member is engaged with the engaged portion of the belt member, it is possible to stretch the greenhouse jacket film, A covering film stretching device is provided.
According to the second aspect of the present invention, the length of the tension applying member is such that a base end side is connected to an arbitrary immovable portion, and a free end side is provided with an engaging portion which engages with an engaged portion of the belt member. 2. The greenhouse jacket film stretching device according to claim 1, wherein the device is constituted by another adjustable belt member.
According to the third aspect of the present invention, the winding pipe is formed in a substantially semi-tubular shape that can be fitted to the winding pipe from the outer periphery thereof, and both the end of the greenhouse jacket film and the base end of the belt member. 3. A tool for stretching a greenhouse jacket film according to claim 1 or 2, further comprising a belt fixing member fitted in a state wound around the belt. In the present invention according to claim 4, the outer casing for a greenhouse according to any one of claims 1 to 3, further comprising a detent means for preventing the winding pipe from rotating when the greenhouse jacket film is stretched. An apparatus for stretching a film is provided.
According to the present invention as set forth in claim 5, the detent means includes an outer rectangular prismatic tube member fixed around a winding pipe,
A joint pipe that has an inner surface shape that can be fitted to the square pipe member and is provided to be slidable in the axial direction of the winding pipe,
A fixing means for sliding along the axial direction of the winding pipe so as to non-rotatably fix the joint pipe fitted to the rectangular pipe member, and providing the tension when the greenhouse jacket film is stretched. 5. A device for stretching a greenhouse jacket film according to claim 1, further comprising a rotation prevention member whose length can be adjusted to follow the length of the member. 6.
In the present invention according to claim 6, a method for stretching a greenhouse jacket film, which constitutes a greenhouse jacket and is opened and closed by a winding pipe and functions as a ventilation member,
The engaged portion provided on the free end side of the belt member of a predetermined length whose base end side is connected to the winding pipe,
Engage the engagement portion of the tension applying member with adjustable length,
A method for stretching a greenhouse jacket film, wherein the length of the tension applying member is adjusted to stretch the greenhouse jacket film.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is an external perspective view of a greenhouse 1 showing a state in which a jacket film 30 is stretched using a greenhouse jacket film stretching apparatus 10 according to one embodiment of the present invention. In this embodiment, the covering film 30 covers the vicinity of the ceiling 1a of the greenhouse 1, and the end of the covering film 30 overlaps the upper part of the side film 31 forming the side surface 1b of the greenhouse 1. It is provided in. A winding pipe 40 is fixed to an end portion of the jacket film 30. By rotating the winding pipe 40 in one direction, the jacket film 30 is sequentially wound, and the ceiling 1a is opened. By rotating in the opposite direction, the jacket film 30 is rewound and overlaps with the upper portion of the side film 31, so that the ceiling 1a can be completely closed. The means for rotating the take-up pipe 40 is optional, but in FIG. 1, a shaft portion connected to one end of the take-up pipe 40 is provided, and the shaft is provided via a plurality of gears housed in the box body 51. A driving mechanism 50 having a manual handle 52 is used. Of course, instead of such a manual drive mechanism 50, a motor drive type can be adopted.
[0011]
As shown in FIG. 1, the tensioning device 10 includes a first belt member 11 and a second belt member 12 that is a tension applying member. The first belt member 11 has a predetermined length, and its base end 11a is wound around a winding pipe 40 around which the end of the jacket film 30 is wound, as shown in FIG. ing. The base end 11a side wound around the winding pipe 40 is fixed together with the end of the jacket film 30 by fitting a belt fixing member 13 formed in a substantially semi-tubular shape from the outer periphery of the winding pipe 40. You. Therefore, the first belt member 11 is wound around the peripheral surface of the substantially semi-tubular belt fixing member 13 together with the jacket film 30 by rotating in the direction of the arrow in FIG.
[0012]
Further, as a result of the base end 11a side of the first belt member 11 being fixed to the winding pipe 40 as described above, the other end from the boundary between the belt fixing member 13 and the winding pipe 40 is free. The end 11b side is pulled out. On the side of the free end 11b, an annular portion 11c is formed as an engaged portion which is formed into an annular shape by folding.
[0013]
As shown in FIG. 3, the second belt member 12 has a predetermined length, and the base end 12 a side has a fixed pin 14, which is partially embedded in and fixed to an arbitrary immovable part, for example, the ground. The hook-shaped pin head is engaged and connected. The base end 12a is folded back, and portions before and after the folded portion are inserted through the buckle member 12c. On the free end 12b side of the second belt member 12, a hook member 12d serving as an engaging portion is provided. Accordingly, the hook member 12d as the engaging portion is engaged with the annular portion 11c as the engaged portion of the first belt member 11, and the folded end portion on the base end 12a side of the second belt member 12. By pulling 12e, the length of the second belt member 12 is adjusted, and the jacket film 30 can be stretched with a desired tension. Note that it is possible to provide a hook member as an engaged portion of the first belt member 11 and provide an annular portion as an engagement portion of the second belt member 12, but the first belt member 11 is When the film 30 is released, the film 30 is wound around the belt fixing member 13 together with the film 30 as described later, so that the material and shape of the hook member 30 are not damaged by the hook member. And so on. Therefore, as in the present embodiment, it is preferable that the engaged portion of the first belt member 11 be formed of the annular portion 11c formed by folding the belt material, and the second belt member 12 be provided with the hook member 12d. .
[0014]
Further, in the present embodiment, the second belt member 12 made of a belt material is used as the tension applying member, but the first belt member 11 is provided with an engaging portion that engages with the engaged portion of the first belt member 11. As long as a predetermined tension can be applied to the envelope film 30 by pulling the belt member 11 downward, a telescopic piston member or a rod member can be used. However, it is preferable to use a material made of a flexible belt-like cloth material or the like as in the present embodiment, so that it can be easily removed when not in use, and it does not hinder even if it is placed on the ground. .
In the present specification, the “belt member” is not limited to a belt-shaped belt material, but also includes a string-shaped member having a substantially circular cross section.
[0015]
As shown in FIG. 1, a plurality of tensioning devices 10 each including the first belt member 11 and the second belt member 12 are provided at predetermined intervals along the axial direction of the winding pipe 40, In this configuration, the winding pipe 40 can be partially pulled downward. Therefore, even if the frame material or the like constituting the greenhouse 1 is deformed, it is possible to individually operate the plurality of the tensioning devices 10 to apply the necessary tension, and Therefore, the covering film 30 can be securely stretched.
[0016]
On the other hand, since the tensioning device 10 of the present embodiment is configured to pull the winding pipe 40 via the first belt member 11, the first belt member 11 is rotated when the winding pipe 40 is freely rotatable. Even if it is pulled, the envelope film 30 is only rewound, but no tension can be applied. Accordingly, in applying tension to the jacket film 30, in order to pull the first belt member 11, it is necessary to provide a detent means for preventing rotation of the winding pipe 40 at a desired position.
[0017]
As shown in FIGS. 1 and 4, the detent means of the present embodiment is provided near one end of the winding pipe 40, in this embodiment, near the end connected to the drive mechanism 50. A tubular pipe member 15 having a square outer surface fixed to the periphery of the pipe, a joint pipe 16 provided near the one end of the take-up pipe 40 so as to be slidable in the axial direction of the take-up pipe 40, and preventing the joint pipe 16 from rotating. The rotation preventing member 17 is provided. The inner surface of the joint pipe 16 is formed in a shape having a corner portion that can be fitted to the rectangular pipe member 15, and is slid along the winding pipe 40 to be fitted to the outer periphery of the rectangular pipe member 15. Can be.
[0018]
The rotation preventing member 17 has a pipe member 18 which can be extended and contracted. The pipe member 18 includes a fixed pipe 18a erected on the ground, and a movable pipe 18b of which one end is inserted near the fixed pipe 18a and whose projected length from the fixed pipe 18a changes by adjusting the insertion amount. It becomes. Then, the upper end of the movable pipe 18b is inserted into a projecting pipe 16a projecting from the joint pipe 16, and a pin member 19 as a fixing means is inserted from a direction orthogonal to the axial direction to connect the two. Has become. This makes it impossible to rotate at a predetermined position while the winding pipe 40 is unwound by a predetermined amount. Therefore, if the length of the second belt member 12 is adjusted in such a state, the winding pipe 40 does not rotate, and the pipe member 18 can expand and contract. It is possible to follow the length, and no excessive force is applied to the winding pipe 40, and the entire pipe can be pulled on average. The rotation preventing member 17 only needs to be adjustable in length so as to follow the length of the second belt member 12, and is limited to the extensible pipe member 18 as in the present embodiment. Not something. For example, a belt member provided with a buckle member whose length can be adjusted can be used. In this embodiment, the rectangular pipe member 15 and the joint pipe 16 fitted thereto are used as the detent means. However, the structure is limited as long as the rotation of the winding pipe 40 can be prevented. is not. For example, in place of the square tube member 15 and the joint tube 16 of the present embodiment, a tube member having a protrusion protruding from the outer periphery and a joint member having a groove engaged with the protrusion may be used. Also, without using the rectangular pipe member 15 or the joint pipe 16, for example, a through-hole that penetrates in the diameter direction is formed in the winding pipe 40 or in the shaft of the drive mechanism 50 to which the winding pipe 40 is connected. Alternatively, a structure in which a pin member or the like is inserted into the through hole and fixed to the rotation preventing member 17 may be adopted.
[0019]
The stretching device 10 of the present embodiment is used as follows. First, it is assumed that the jacket film 30 is wound by the winding pipe 40 and the ceiling 1a is open. In this state, when the handle 52 of the drive mechanism 50 is operated to rotate the winding pipe 40 in a predetermined direction, the jacket film 30 is rewound. When the film is rewound by a predetermined amount, for example, when it partially overlaps the side film 31, the operation of the handle 52 is stopped. Of course, it is also possible to stop in a state where it does not overlap the side film 31, that is, in a state where it is partially opened. In any case, at the position where the operation of the handle 52 is stopped, the base end 11a side of the first belt member 11 constituting the tensioning device 10 together with the jacket film 30 around the belt fixing member 13 by one or more turns. Operate as if it were wound, preferably more than two turns.
[0020]
In this state, the joint pipe 16 provided near one end of the winding pipe 40 is slid in the axial direction, and fitted to the rectangular pipe member 15. Next, the upper end of the movable pipe 18b of the rotation preventing member 17 is inserted into the protruding pipe 16a of the joint pipe 16, and the pin member 19 is inserted from a direction perpendicular to the axial direction to make the winding pipe 40 unrotatable. Set.
[0021]
Next, the hook member 12d provided on the free end 12b side of the second belt member 12 is engaged with the annular portion 11c provided on the free end 11b side of the first belt member 11. As described above, a plurality of tensioning devices 10 of the present embodiment, which are formed by combining the first belt member 11 and the second belt member 12, are provided at predetermined intervals along the axial direction of the winding pipe 40. Therefore, the operation of engaging the hook member 12d of the second belt member 12 with the annular portion 11c of the first belt member 11 is performed at a plurality of locations.
[0022]
In this manner, when the hook member 12d is engaged with the annular portion 11c, the folded end portion 12e is pulled via the buckle member 12c of the second belt member 12, and the length of the second belt member 12 is reduced. adjust. As a result, the take-up pipe 40 is pulled in the ground direction, and the jacket film 30 can be stretched with a predetermined tension. According to the present embodiment, the hook member 12d of the second belt member 12 is thus attached to the annular portion 11c of the first belt member 11 drawn out from between the belt fixing member 13 and the winding pipe 40. This is a structure in which the hook member is brought into contact with the peripheral surface of the jacket film and then directly engaged with the winding pipe as in the related art. Therefore, the jacket film 30 is not damaged by the hook member 12d. In addition, since the first belt member 11 made of a flexible belt-like cloth material or the like is used as a member to be wound around the winding pipe 40, when the first belt member 11 is wound around the winding pipe 40, the outside belt is wound around the winding pipe 40 together. The film 30 is not damaged. Further, since the hook member 12d as the engaging portion is engaged with the annular portion 11c as the engaged portion provided so as to be easily engaged, the engaging operation is also easy.
[0023]
As shown in FIG. 1, when the cover film 30 is opened from the state where the cover film 30 is stretched, the hook member 12 d of the second belt member 12 is connected to the annular shape of the first belt member 11. The joint tube 16 is slid in the axial direction so as to be detached from the rectangular tube member 15 while removing the pin member 19 from the portion 11c. Then, by operating the handle 52 of the drive mechanism 50, the winding pipe 40 is rotated in a predetermined direction. As a result, the first belt member 11 is wound around the belt fixing member 13 together with the jacket film 30, and the jacket film 30 is further wound by operating the handle 52, and the ceiling 1a is opened.
[0024]
【The invention's effect】
The present invention has a belt member connected to the winding pipe, and a tension applying member capable of pulling the belt member. This is a configuration for applying tension. Therefore, unlike the related art, the structure is not directly engaged with the outer cover film, and thus the outer cover film can be stretched without damaging the outer cover film. Further, the tensioning member can be easily engaged by engaging the engaging portion of the tension applying member with the engaged portion of the belt member and adjusting the length of the tension applying member. For this reason, even if a plurality of tensioning devices are provided along the longitudinal direction of the greenhouse, there is no great burden on the work, and since tension can be partially applied, the beam member having a predetermined length In comparison with conventional means for engaging a take-up pipe having a predetermined length, even if deformation of a greenhouse or the like occurs, tension following the deformation can be applied, and the envelope film can be easily and reliably tensioned. Can be set up.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a greenhouse in which a tool for stretching a greenhouse jacket film according to an embodiment of the present invention is arranged.
FIG. 2 is a diagram showing a detailed structure of a first belt member constituting the stretching device according to the embodiment.
FIG. 3 is a diagram showing a detailed structure of a second belt member as a tension applying member constituting the tensioning device according to the embodiment.
FIG. 4 is a diagram showing a detailed structure of a detent means constituting the tensioning device according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Greenhouse 10 Stretching tool 11 First belt member 11c Annular part 12 Second belt member 12d Hook member 15 Square tube member 16 Joint member 17 Rotation preventing member 30 Outer film 40 Winding pipe 50 Drive mechanism

Claims (6)

A greenhouse jacket film stretching device that constitutes a greenhouse jacket and is opened and closed by a winding pipe to function as a ventilation member,
A belt member having a predetermined length connected to the winding pipe at a base end thereof and having an engaged portion at a free end thereof;
A length-adjustable tension applying member having an engaging portion that engages with the engaged portion of the belt member,
By adjusting the length in a state where the engaging portion of the tension applying member is engaged with the engaged portion of the belt member, it is possible to stretch the greenhouse jacket film, Stretching device for jacket film. The tension applying member is composed of another belt member whose length can be adjusted, the base end side of which is connected to any immovable portion, and the free end side of which has an engaging portion which engages with the engaged portion of the belt member. 2. The device for stretching a greenhouse jacket film according to claim 1, wherein: It is formed in a substantially semi-tubular shape that can be fitted to the winding pipe from the outer periphery, and is fitted in a state where both the end of the greenhouse jacket film and the base end side of the belt member are wound around the winding pipe. 3. The device for stretching a greenhouse jacket film according to claim 1, further comprising a belt fixing member. The device for stretching a greenhouse jacket film according to any one of claims 1 to 3, further comprising means for preventing the winding pipe from rotating when the greenhouse jacket film is stretched. Said detent means, an outer square prismatic tube member fixed around the winding pipe,
A joint pipe that has an inner surface shape that can be fitted to the square pipe member and is provided to be slidable in the axial direction of the winding pipe,
A fixing means for sliding along the axial direction of the winding pipe so as to non-rotatably fix the joint pipe fitted to the rectangular pipe member, and providing the tension when the greenhouse jacket film is stretched. The stretching device for a greenhouse jacket film according to any one of claims 1 to 4, further comprising a rotation preventing member whose length can be adjusted to follow the length of the member. A method for stretching a greenhouse jacket film that constitutes a greenhouse jacket and is opened and closed by a winding pipe and functions as a ventilation member,
The engaged portion provided on the free end side of the belt member of a predetermined length whose base end side is connected to the winding pipe,
Engage the engaging portion of the tension applying member whose length is adjustable,
A method for stretching a greenhouse jacket film, comprising adjusting the length of the tension applying member to stretch the greenhouse jacket film.

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