JP5575587B2 - Sheet tensioning tool for sheet feeding and sheet pulling - Google Patents

Description

  The present invention relates to a sheet tensioning tool for sheet feeding and sheet pulling for placing a vinyl sheet on a roof portion of a greenhouse.

  Conventionally, a greenhouse that functions as a simple greenhouse has been used in the agricultural field and the like. Such a greenhouse usually has an arch-shaped frame material composed of many iron pipes standing at a predetermined interval (500 to 600 mm) in the ridge direction, and a ridge-direction composed of a large number of iron pipes connecting the arch-shaped frame materials to each other. A framework that forms an arch shape when viewed from the wife's side is assembled with the skeleton material, and a vinyl sheet is stretched on this framework. The stretched vinyl sheet is pressed into a skeleton by fixing it with an elastic synthetic resin fixing tool called a bunker with a round cross-section and pressing tape (or string) stretched between arched skeleton materials. It was fixed.

  The operation of hanging a vinyl sheet on such a greenhouse, particularly the operation of hanging the vinyl sheet on the roof portion, has been performed manually by many workers. Specifically, hold one end of the vinyl sheet with a couple of people, place two workers on both sides of the greenhouse, and one worker on the roof of the frame, and put the other end of the vinyl sheet While pulling, we were working on hanging a vinyl sheet that would be the roof.

  Therefore, techniques for assisting the operation of hanging a vinyl sheet when assembling a greenhouse have been proposed.

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-49029), a vinyl sheet 6 shrunk into a bundle to quickly perform mounting and removal of a vinyl sheet on a house skeleton by an efficient and simple operation. The hollow cylindrical body with a predetermined length that can pass through, at least the opening part on the drawing side of the vinyl sheet in the opening part at both ends, so that it is smoothly expanded outward In addition, there has been proposed a plastic seat setting tool that forms a rebound edge and has the outside of the appropriate place as a detachable mounting portion to the portal-type house skeleton.

  Moreover, in patent document 2 (Unexamined-Japanese-Patent No. 2004-121076), in order to implement | achieve and enable the sheet | seat mounting | wearing to a greenhouse quickly by an efficient and simple operation | work, with respect to a pair of adjacent portal frame | skeleton bodies, It consists of a horizontal main rod combined so as to be rotatable around an axis, and a sheet support rod formed in a shape that can be used to place a bundle of sheets, and the horizontal main rod is a portal skeleton. There has been proposed a sheet tensioning tool for sheet feeding in which a rotation restricting portion is formed at a location close to at least one of the connecting portions.

  Further, in Patent Document 3 (Japanese Patent Application Laid-Open No. 2006-115722), as a sheet tensioning tool for feeding a sheet that is small and lightweight, has a simple structure, and is easy to manufacture, a leading frame for traction, tracking The connecting frame having the frame and the connecting mechanism is connected to each other by a hinge mechanism so as to be foldable with each other, and the submersible rod is projected at a predetermined angle from the front pulling frame toward the rear. A sheet tensioning tool for sheet feeding in a greenhouse has been proposed.

JP 2004-49029 A JP 2004-121076 A JP 2006-115722 A

  As described above, in Patent Document 1, a sheet setting tool for a greenhouse is proposed, and in Patent Document 2, a sheet setting tool for feeding sheets in a greenhouse, a sheet setting tool for changing sheet direction, and A sheet tensioning tool for guiding sheet pulling has been proposed, and in Patent Document 3, a sheet tensioning tool for sheet feeding is proposed. However, there is still room for improvement in terms of making the structure simpler and reducing the effort during installation.

  In other words, those that change the direction of a vinyl sheet bundle lifted from the ground in the direction of the ridge of the vinyl sheet are proposed in Patent Documents 1 and 2, and the bundle of vinyl sheets stretched in the direction of the ridge is removed. Those to be suppressed are proposed in Patent Document 2, but these conventionally proposed ones have a large overall structure, and it is considered to be dangerous when working at a high place.

  Further, since the sheet extending tool for sheet feeding and the sheet extending tool for changing the sheet direction proposed in Patent Document 2 are both installed between a pair of adjacent portal frame bodies, The space between the skeleton bodies has to be matched with the width of the sheet tensioning tool, and there is a problem that it must be taken into account in the installation work of these sheet tensioning tools and, in turn, the assembly work of the greenhouse.

  SUMMARY OF THE INVENTION Accordingly, it is a first object of the present invention to provide a sheet tensioning tool for sheet feeding and sheet direction change that can be safely and easily installed at a high place. It is a second object to provide a sheet tensioning tool for sheet feeding and sheet direction change that can be installed without depending on the distance between the mold skeletons.

  Further, in the sheet tensioning tool, the one that pulls the bundled vinyl sheets is proposed in Patent Documents 2 and 3, but there is still room for improvement in preventing the vinyl sheet from coming off during towing. Further, there is also a concern that the heel projecting further upward (the diving heel) may damage the towed vinyl sheet due to the vertical movement during traction.

  Therefore, the present invention has a third object to provide a sheet tensioning tool for guiding the pulling of a sheet, which is provided with a connecting structure that can hold the vinyl sheet more securely, and further when the bundled vinyl sheets are pulled. The fourth problem is to provide a sheet tensioning tool for guiding the pulling of the sheet so as not to damage the vinyl sheet.

  The present invention provides an improved sheet tensioning tool that has been conventionally provided, and provides a sheet tensioning tool that has a new effect that cannot be enjoyed by conventional sheet tensioning tools.

  That is, the present invention provides a sheet-feeding sheet that is installed in a portal skeleton that forms a skeleton of a greenhouse and can hold the stretched vinyl sheet as a sheet-stretching tool that solves at least one of the above problems. A tensioning tool comprising: a hook member capable of rotating a virtual space parallel to a virtual vertical plane to which the portal skeleton belongs, and a connecting member for holding the hook member on any one of the portal skeletons. The connecting member includes a gate-type skeleton holding part that holds any one of the gate-type skeletons, and a saddle member pivoting part that pivotally attaches one end in the length direction of the saddle member. A sheet tensioning tool is provided.

  Such a sheet feeding device for sheet feeding is formed of the collar member and the connecting member for assembling the same to the portal skeleton, and thus is lightweight, small and not bulky. Therefore, it is possible to perform the attachment work safely even in work at a high place such as a roof portion of a greenhouse. Further, since the sheet tensioning tool for sheet feeding is provided in one portal skeleton body, it can be installed regardless of the interval between the portal skeleton bodies. Can be set freely. That is, the sheet feeding tool for sheet feeding can be used even when the gaps between the portal skeletons are not regularly provided. Further, by using the sheet stretching tool for sheet feeding, It becomes possible to build a greenhouse with the body spacing set freely.

  Further, the saddle member is pivotally attached at the pivot member pivoting portion of the connecting member, and a virtual space parallel to the virtual vertical plane to which the portal skeleton belongs is rotatably provided. Is used by projecting to the outside of the portal skeleton, and when it is not necessary to hold the vinyl sheet, it can be rotated so that the portal skeleton does not project.

  In addition, the sheet extending tool for sheet feeding is used to prevent the vinyl sheet of the roof portion from falling off when pulling up the vinyl sheet constituting the roof portion of the greenhouse. When the hem side of the vinyl sheet constituting the wall portion is lifted for ventilation in the house, it can be used to hold the lifted hem side. That is, the sheet feeding tool for sheet feeding can be attached to a skeleton portion rising from the ground so as to constitute a wall portion in the greenhouse, in addition to being attached to the skeleton portion constituting the roof portion in the greenhouse.

  Furthermore, the sheet feeding tool for sheet feeding may be provided with a rotation restricting means for restricting the rotation of the collar member on the connecting member. Such a rotation restricting means is formed as a protruding portion that supports the flange member that protrudes and rotates on the flange member, and is also screwed to the pivot member pivoting portion of the connecting member to the extent that the rotation of the flange member is prevented. It can be configured in a screwed structure.

  In the present invention, in order to solve at least one of the above problems, the vinyl sheet can be smoothly transferred when the vinyl sheet lifted on the roof portion of the portal skeleton is pulled up in the ridge direction. A sheet tensioning tool for sheet feeding is provided.

  That is, a sheet extending tool that is installed on a portal skeleton constituting a skeleton of a greenhouse and is capable of holding a stretched vinyl sheet and is used for sheet feeding. A sheet tension for sheet feeding comprising a bent hook member having a part and a second part bent from the first part and extending, and a connecting member pivotally attaching the hook member to any one of the portal skeletons It is a tool.

  The folding saddle member in the sheet tensioning tool for sheet feeding has a first portion formed substantially straight so as to follow the portal skeleton, and a second portion bent and extended from the first portion. The overall shape can be formed in a substantially “L” shape, “shi” shape or “T” shape. That is, the first part has a shape along the portal skeleton, and the second part may have a shape that rises from the first part and protrudes, and the vinyl sheet pulled up by the second part can be suppressed. The connecting member is provided to hold the first portion on the portal skeleton, and at least the second portion is rotatable around the axis of the first portion, or a virtual vertical plane to which the portal skeleton belongs. It is desirable to be configured to hold the folding fold member so that the first portion can rotate in a parallel virtual space.

  Such a sheet feeding tool for sheet feeding may be installed on any of the portal skeleton bodies among a plurality of portal skeleton bodies arranged side by side in the ridge direction of the greenhouse. It is installed on the portal skeleton that is the starting point for pulling out the wing in the building direction. In other words, the sheet tensioning tool for sheet feeding functions as a device that changes the direction of the pulled up vinyl sheet, so that it can be installed on the opposite side of the portal frame from the pulling-out direction of the vinyl sheet. desirable.

  In addition, when used in such applications, the sheet feeding tool for sheet feeding is formed or coated with a material that reduces frictional resistance so that the vinyl sheet can be smoothly transported, It is desirable that a part of the cylindrical member that covers the first part and is rotatable in its circumferential direction is externally mounted (attached to the outside). In particular, when the cylindrical member is packaged, the lifted vinyl sheet is smoothly fed out without resistance by the rotation of the cylindrical member.

  According to the present invention, there is provided a sheet feeding tool for sheet feeding which is intended to change the direction of the pulled-up vinyl sheet exclusively as related to the sheet feeding tool for sheet feeding. That is, it is a sheet tensioning tool for sheet feeding that is installed on a portal skeleton body that constitutes the skeleton of a greenhouse and can hold a stretched vinyl sheet, and is an axis along any one of the portal skeleton bodies A sheet feed comprising a member, a tubular member that is externally mounted on the shaft rod member and is rotatable around the shaft member, and a connecting member that connects the shaft member to any one portal frame A sheet tensioning tool is provided.

  That is, the sheet feeding tool for sheet feeding is provided alongside the portal skeleton forming the skeleton of the greenhouse, and the shaft member can be formed of a pipe having a predetermined length. Further, the connecting member for connecting the shaft member to the portal skeleton body can be formed by fixing one or both ends of the shaft member to the portal skeleton body.

  When using such a sheet feeding tool for sheet feeding, the lifted vinyl sheet is not dropped from the area of the cylindrical member in the sheet feeding tool for sheet feeding. In order to regulate the width, a hook member that can rotate in a virtual space parallel to the virtual vertical plane to which the portal skeleton belongs, and a connecting member that holds the hook member on any one of the portal skeletons; A sheet tensioning tool consisting of can be used.

  Furthermore, in order to solve at least one of the above-described problems, the present invention provides a sheet tensioning tool for pulling a sheet, which is used for pulling a bundled vinyl sheet and pulling it up on the skeleton of the greenhouse. That is, it comprises a frame main body that is bent and protrudes at least on the front end side, and a rising member that rises toward the rear end with the front end or intermediate portion of the frame main body as a base point. It is a sheet | seat tensioning tool for sheet | seat pulling provided with the wide part which follows.

  In such a sheet pulling tool for pulling the seat, the rising member functions to lift a holding string for holding the vinyl sheet when pulling the vinyl sheet, but the width direction of the frame body on the rear end side. Since the wide portion along the line is provided, even if it hits the towed vinyl sheet, the vinyl sheet is not damaged, such as opening a hole. Such a rising member can be formed in a frame shape using a metal wire or the like in addition to being formed in a plate shape. Especially when using a metal wire, it can be formed in a substantially “U” shape or “U” shape with the rear end side closed, and the “T” shape with the rear end side widened. It can be formed in a shape or an annular portion can be formed on the rear end side.

Such a sheet pulling tool for towing a sheet can be accompanied by a configuration for securely holding the towed vinyl sheet. That is, the frame body has a parallel region made of steel wire in parallel to face during therein, to the parallel regions, the integrated in the frame body by Lenka in the width direction of the frame body One horizontal member, and a second horizontal member that is provided such that the tip side of the first horizontal member is movable in the length direction of the frame body, and a vinyl sheet is sandwiched between the first horizontal member and the first horizontal member And a seat tensioning tool for pulling the seat.

  In such a sheet pulling tool for towing a sheet, when the resistance is increased by pulling the vinyl sheet, the second horizontal member is pulled toward the first horizontal member, and as a result, the first horizontal member is pulled. By the member and the second horizontal member, a force for sandwiching the vinyl sheet is increased, and the vinyl sheet can be held more reliably.

  The seat tensioning tool according to the present invention configured as described above is realized as a lightweight and compact seat tensioning tool by adopting a novel structure and the like, and as a result, when constructing a greenhouse. For example, installation work at high altitudes can be performed safely and easily. Also, the sheet tensioning tool for sheet feeding (for changing the direction of the sheet depending on how it is used) can be installed on one portal skeleton body, so that it can be installed without depending on the distance between the portal skeleton bodies. Yes, if it is a greenhouse using a skeleton body, it can be used without depending on the interval between the portal skeleton bodies, and a greenhouse can be constructed with the portal skeleton bodies set at arbitrary intervals. .

Furthermore, according to the sheet tensioning tool for sheet pulling provided by the present invention, a sheet tensioning tool for guiding sheet pulling that can hold the vinyl sheet more reliably as the pulling resistance of the vinyl sheet to be pulled increases is provided. Further, since the wide portion along the width direction of the frame body is formed on the rear end side of the rising member, the sheet tensioning tool for pulling the seat swings up and down when the vinyl sheet is pulled. However, the vinyl sheet to which the rear end side of the rising member is pulled is not damaged, and the vinyl sheet can be safely stretched.

It is the front view which abbreviate | omitted one part which shows the sheet | seat tensioning tool for sheet feeding which concerns on 1st embodiment, (B) It is a right view. (A) The front view which abbreviate | omitted one part which shows the sheet | seat tensioning tool for sheet feeding which concerns on 2nd embodiment, (B) It is a right view. (A) The front view which abbreviate | omitted one part which shows the sheet | seat tensioning tool for sheet feeding which concerns on 3rd embodiment, (B) It is a b-b 'cross-sectional view. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a perspective view showing a seat tensioning tool for pulling a seat according to an embodiment, and FIG. It is the assembly state schematic of the greenhouse using each sheet | seat tension tool. It is the assembly state schematic of the other greenhouse using each sheet | seat tension tool.

  Hereinafter, the sheet stretching tool according to the present embodiment will be described in detail with reference to the drawings. 1-3 show several sheet tensioning tools 10 for feeding sheets according to the present embodiment, and FIG. 4 shows a sheet tensioning tool 40 for pulling sheets according to the present embodiment. FIGS. 5 and 6 are schematic views showing a working state when the vinyl sheet S is stretched using the sheet stretching tool according to the present embodiment.

  First, a typical embodiment of a sheet feeding tool 10 for feeding a sheet according to the present embodiment will be described with reference to FIG. In FIG. 1, FIG. 1 (A) is a front view with a part omitted, and FIG. 2 (B) is a right side view. A sheet tensioning tool 10 for feeding a sheet shown in FIG. 1 includes a collar member 12 that is rotatable in the extending direction of the portal skeleton P, and a connection that pivotally attaches the collar member 12 to the portal skeleton P. It consists of the member 14. In FIG. 1, the eaves member 12 shows only the base portion coupled to the connecting member 14, and the distal end thereof is omitted, but the eaves member 12 is usually 10 cm to 30 cm, preferably about 15 cm to 20 cm. Formed in length. Further, the saddle member 12 can be formed using the same iron pipe as that constituting the portal skeleton P, that is, can be formed using an iron pipe having an outer diameter of about 22 mm.

  In this embodiment, the eaves member 12 is formed flat by crushing the base side pivotally attached to the connecting member 14, but it is not always necessary to crush the base and may remain in a pipe shape. . However, as shown in the present embodiment, when the base side is crushed, the narrowed and stepped portion hits the portal skeleton P, and the hook member 12 is rotated by the engagement of the two. Can be prevented.

  The saddle member 12 is pivotally attached to the connecting member 14 integrated so as to surround and hold the portal skeleton P. The connecting member 14 is connected to the portal skeleton body sandwiching portion 11 that circulates and sandwiches one portal skeleton body P, and is connected to the portal skeleton body sandwiching portion 11, and one end portion in the length direction of the eaves member 12. It is comprised with the heel member pivoting part 13 pivoting (base side). Specifically, the hole 16 provided in the base portion of the saddle member 12 and the hole provided in the pivot member joint portion are matched, and the connecting member 14 and the saddle member 12 are integrated with bolts and nuts. Yes.

  In particular, in the connection member 14 according to the present embodiment, it is located at a position lower than the portal skeleton P and protrudes into the rotation region of the collar member 12 to restrict the rotation of the collar member 12. A movement restricting means 18 is provided. The presence of the rotation restricting means 18 restricts the rotation of the flange member 12 within a certain range. And, as shown in FIGS. 5 and 6, the vinyl sheet S pulled up to the roof part region of the greenhouse can be suppressed by the saddle member 12 whose rotation is restricted, and the vinyl sheet S is removed from the roof part region. It can prevent the gap from falling.

  2 shows a sheet tensioning tool 20 for sheet feeding according to another embodiment, FIG. 2 (A) is a front view with a part omitted, and FIG. 2 (B) is a right side view. Yes. The sheet feeding tool 20 for feeding a sheet shown in this figure is bent from the first part 21 and a first part 21 extending in the direction along the portal skeleton P indicated by a chain line in FIG. The bent hook member 23 is composed of a second portion 22 extending upward, and the bent hook member 23 is pivotable around the axis of the first portion 21 by a connecting member 24 on the base side. In this state, it is fixed to the portal skeleton P. The first portion 21 is covered with a cylindrical member 25 that is rotatable around the axis of the first member. Since the cylindrical member 25 is externally mounted on the first portion 21, when the vinyl sheet S is pulled up as shown in FIG. 6, the cylindrical member 25 rotates, and the pulled up vinyl sheet S and the bent fold member The frictional resistance of the wrinkles generated between the two and 23 can be reduced. Thereby, the vinyl sheet S can be pulled up extremely smoothly.

  In the sheet tensioning tool 20 for sheet feeding shown in FIG. 2, the connecting member 24 includes a first connecting member 24 b that holds the portal skeleton P and a second connecting member 24 a that holds the bent saddle member 23. Both are integrated by screwing with bolts and nuts. The bent fold member 23 integrated with the portal skeleton P in this manner is free to rotate around the axis of the first portion 21 by loosening the engagement between the bolt and the nut, and when not in use, FIG. As indicated by a chain line in B), the second portion 22 can be rotated and stored in a direction in which the second portion 22 does not protrude outside the portal skeleton P (that is, a direction inside the greenhouse).

  3 shows a sheet tensioning tool 30 for feeding a sheet according to still another embodiment. FIG. 3 (A) is a partially omitted front view, and FIG. 3 (B) is a cross-sectional view taken along the line bb ′. The figure is shown. The sheet feeding tool 30 for feeding a sheet shown in this figure comprises the shaft member 21 only by the first portion 21 of the bent hook member 23 in the sheet feeding tool 20 for feeding the sheet shown in FIG. A cylindrical member 25 is rotatably provided on the member 21. The shaft member 21 has both ends in the axial direction fixed to the portal skeleton P by the connecting member 24, whereby the shaft of the portal skeleton P of the sheet tensioning tool 10 for sheet feeding. It is possible to reliably prevent movement around.

  In the embodiment shown in FIG. 3, the first connector 24a and the second connector 24b that constitute the connecting member 24 so that the cylindrical member 25 can be rotated without interfering with the portal skeleton P. Between the two, a plate-like spacer 27 is interposed. Due to the presence of the spacer 27, the cylindrical member 25 can freely rotate without interfering with the portal skeleton P.

  As shown in FIG. 5, the sheet tensioning tool 30 for feeding a sheet shown in FIG. As a result, the lifted vinyl sheet S can be pulled up smoothly. Note that the width direction can be regulated by the sheet feeding tool 10 shown in FIG. 1 so that the plastic sheet S to be lifted does not protrude from the region where the cylindrical member 25 exists. As a result, all the raised vinyl sheets S are smoothly pulled up by the rotation of the tubular member 25.

  2 and 3, the sheet tensioning tools 20 and 30 for sheet feeding use the same bent iron member 23 and the shaft member 21 using the same iron pipe as that constituting the portal skeleton P. Can be formed. The lengths of the first portion 21 and the shaft member 21 of the bent fold member 23 can be set as appropriate, but generally can be formed to a length of about 30 cm to 100 cm, and preferably about 40 cm to 60 cm. . Further, the length of the second portion 22 of the folding fold member 23 can be set to the same length as the sheet tensioning tool 10 for sheet feeding shown in FIG.

  FIG. 4 shows a seat tensioning tool 40 for seat pulling according to the present embodiment, and FIG. 4 (A) is a perspective view of the seat tensioning tool 40 for seat pulling, and FIG. 4 (B). These are the schematic diagrams which show the use condition of the said sheet pulling tool 40 for said sheet | seat pulling.

  The sheet tensioning tool 40 shown in this figure is for pulling and pulling the bundled vinyl sheets S to the roof region in the greenhouse, and is formed using a steel wire in this embodiment. . The sheet pulling tool 40 for pulling the seat has a front end region 42 protruding in a mountain shape, a rear end region 41 formed in a rectangular shape, and a frame main body 43 formed in a rectangular shape. And a rising member 45 rising toward. As shown in FIG. 4B, a string 47 for towing is tied to the tip region 42 with a sharp tip, and the bundled vinyl sheets S to be towed can be held in the rectangular region 41. .

  A portion that is formed in a rectangular shape and holds the vinyl sheet S has a first horizontal member 44a installed in the width direction, and a distal end side of the first horizontal member 44a is moved in the length direction of the frame body. A freely provided second horizontal member 44b is provided. In the rectangular part 41 formed in this way, when the vinyl sheet S is pulled by winding the second horizontal member 44b back as shown by the arrow in FIG. The second horizontal member 44b is also pressed against the first horizontal member 44a, and as a result, the vinyl sheet S is more firmly held between the first horizontal member 44a and the second horizontal member 44b. Will be able to.

  The rising member 45 rising upward from the rectangular portion 41 toward the rear end side has a substantially “U” shape with the rear end side closed, and has a wide width along the width direction of the frame body on the rear end side. A portion 46 is formed. By forming the rising member 45 in this way, even if the sheet tensioning tool 40 for pulling the sheet is pulled and the sheet tensioning tool swings up and down by the portal skeleton P, the vinyl sheet is pulled. Since the rear end of the rising member 45 corresponding to S is formed wide in the width direction of the frame main body 43, the problem of making a hole in the pulled vinyl sheet S can be eliminated.

  In the seat pulling tool 40 for pulling the seat configured in this way, as shown in FIGS. 4B, 5 and 6, a string member is connected to the front end portion, and the rear end is pulled by pulling it. The vinyl sheet S can be pulled by the side, and the holding string provided between the portal skeletons P can be lifted by the rising member 45 to smoothly pull the vinyl sheet S. In order to pull in this way, as a matter of course, the string body 47 for pulling the seat tensioning tool 40 is stretched in advance so as to pass over the portal frame P and under the presser string w. Need to be.

  And the usage method at the time of the greenhouse assembly of each above-mentioned sheet | seat tensioning tool is as above-mentioned, Furthermore, the whole arrangement | positioning condition is shown in FIG. Since FIG. 5 has been described with various references in the above, detailed description thereof will be omitted. However, as shown in FIG. 6, the sheet tensioning tool 10 for feeding a sheet shown in FIG. 1 is intended to hold a vinyl sheet S in a horizontal portion in a greenhouse, that is, a vinyl sheet S constituting a wall portion. Can also be used. Specifically, when the temperature in the greenhouse increases excessively in summer, the vinyl sheet S is turned up for ventilation for a certain period of time. Conventionally, the rolled up vinyl sheet S was tied with a string or the like, but by installing the sheet tensioning tool 10 for sheet feeding shown in FIG. 1 at the rising part of the skeleton constituting the greenhouse, It can also be used to hold the turned up vinyl sheet S.

10, 20, 30 Seat tensioning tool 11 Gate-type skeleton body sandwiching portion 12 杆 member 13 杆 member pivoting portion 14 linking member 18 rotation restricting means 23 bending fold member 24 linking member 25 cylindrical member 27 spacer 43 frame main body 47 String body w Presser string P Portal skeleton S Vinyl sheet

Claims (2)

A sheet tensioning tool for towing a sheet that pulls the bundled vinyl sheet and pulls it up on the skeleton of the greenhouse.
It consists of a frame main body that bends and protrudes at least at the front end side, and a rising member that rises toward the rear end with the front end or middle part of the frame main body as a base point
The rising member has a wide portion on the rear end side along the width direction of the frame main body.
The frame body has a parallel region consisting parallel opposed steel wire material between therein,
In the parallel region, a first horizontal member that is connected to the frame main body and integrated in the width direction of the frame main body, and a distal end side of the first horizontal member moves in the length direction of the frame main body. The seat tensioning tool for seat pulling according to claim 1 , further comprising a second horizontal member that is freely provided and sandwiches the vinyl sheet with the first horizontal member.