JPH0225882Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a clamping jig for pulling in a membrane body used when constructing a membrane surface structure. This invention relates to a clamping jig for pulling a membrane body that can be pulled.

(Prior art) A membrane structure is formed by constructing the roof of the membrane structure using a membrane body. The membrane must be unfolded without wrinkles.

However, in recent years, this type of membrane structure has come to be formed in huge sizes, and along with this, the size of the membrane itself that makes up this membrane structure has also increased. It's getting better. Therefore, not only the shape of the membrane itself has become large, but also its weight has become considerable.

As described above, when the shape of the membrane becomes large, it becomes impossible to efficiently and safely perform the installation work for constructing the membrane as a roof. Particularly, as has been the case in recent years, when the specific vertical and horizontal lengths of a large membrane are 12 m and 40 m, respectively, it becomes difficult to spread the membrane evenly. In order to spread a large membrane evenly, a large number of workers had to pull and stretch the membrane at multiple locations at the same time.
(This work is called retracting work among those skilled in the art.) In this case, not only is it time-consuming and costly to install the membrane, but also This makes it difficult to carry out the installation work in a safe manner.

(Problems to be solved by the invention) This invention has been made in view of the above-mentioned actual situation, and the problem to be solved is that even if the membrane is large in shape and heavy, its retraction is difficult. It is an object of the present invention to provide a clamping jig for a membrane body, which can perform the work reliably and also makes the work easy to install.

(Means for Solving the Problems) The means taken by the present invention to solve the above problems are as follows with the reference numerals used in the embodiments: A clamping jig 20 used when expanding a bolt/nut 22 by clamping the edge of the membrane 13.
a pair of clamp plates 21 fixed to each other by
and a tensioning tool 23 fixed to at least one side of the pair of clamp plates 21 and extending in a direction parallel to the edge of the membrane body 13, and a rope 25 connected to this tensioning tool 23. A clamp jig 20 for drawing in a membrane body 13.

It is.

This means will be explained below with reference to a specific example shown in the drawings. FIGS. 1 and 2 show a membrane body clamping jig 20 according to the present invention. This clamping jig 20 for a membrane body is used for pulling work before connecting and fixing the membrane body 13 constituting the membrane structure 10 shown in FIGS. 3 and 4 to the support frame 12 of the membrane structure 10. It is used when doing.

The membrane surface structure 10 has a plurality of support ropes 11 stretched around the upper end of a support frame 12 formed to surround a predetermined space, a part of the membrane body 13 is connected to these support ropes 11, and each membrane It is constructed by connecting and fixing the end edge of the body 13 located on the support frame 12 side to the support frame 12. At the edge of each membrane body 13 located on the support frame 12 side, as shown in FIG.
A reinforcing rope 14 is inserted, and the edge of each membrane 13 is reinforced by this reinforcing rope 14. Then, on the edge of this membrane body 13, a plurality of retraction clamps are provided at predetermined intervals (in this example, intervals of 1 m) when the membrane body 13 is unfolded from the rolled state. The jig 20 is attached.

Each membrane body clamp jig 20 is shown in FIGS. 1 and 2.
As shown in the figure, mainly a pair of clamp plates 2
1, a pair of tensioning tools 23 and pulling tools 24 fixed to this clamp plate 21, and a rope 25 connected to these tensioning tools 23 or pulling tools 24. Each clamp plate 21 has a reinforcing rope 1
The end edge of the membrane body 13 located inside the membrane body 4 is clamped and fixed to this part with a plurality of bolts and nuts 22. Further, each clamp plate 21 has a predetermined length (approximately 30 cm in this embodiment) in a direction parallel to the edge of the membrane body 13.

A pair of tensioning tools 23 and one retracting tool 24 are fixed to the upper surface of each clamp plate 21 located on the inner upper side. Each tensioning tool 23 allows the membrane 13 to be pulled in a direction parallel to the edge of the membrane 13 using a rope 25 or the like when expanding the membrane 13.
Further, the pulling tool 24 is used when pulling the edge of the membrane 13 in a direction perpendicular to the edge with a rope 25.

Although the tensioning tools 23 are a pair in the embodiment shown in the drawings, they may be one. Further, the retracting tool 24 may be fixed to any one of the pair of clamp plates 21.

Further, FIGS. 5 and 6 show other examples of the membrane body clamping jig 20 according to the present invention. In this case, the pair of tensioning tools 23 are attached to both clamp plates 21
It is fixed to the nut 22a side that fixes the. Furthermore, clamping recesses 26 as shown in FIG. 6 are formed on the inner surface of each clamp plate 21 so as to face each other. Each clamping recess 26 is sized to be able to clamp the reinforcing rope 14 located at the edge of the membrane body 13. When fixed by the reinforcing rope 1 of the membrane body 13
It firmly holds the four parts together.

(Aspects of use and operation) A case will be described in which a retracting operation is performed using the membrane body clamping jig 20 according to the present invention configured as described above. Normally, each membrane body 13 is initially wound into a roll, and this is rolled out one after another. First, before unrolling this membrane body 13, each clamp plate 21 is attached to the edge of the membrane body 13 at a predetermined interval. Fix it in place. When expanding this membrane body 13, a rope 2 is attached to each tensioning tool 23 at a necessary portion.
5 etc., and by pulling the rope 25 in a direction parallel to the edge of the membrane body 13 as necessary, wrinkles or looseness that tend to occur in the membrane body 13 when the membrane body 13 is expanded can be removed. prevent. Since the membrane body 13 is long, it seems insufficient to correct the looseness only at its edges, but in reality, it is sufficient to expand only at the starting point of the membrane body 13. , the membrane body 13 can be expanded without loosening. Therefore, when each membrane body 13 is unfolded using this membrane body clamping jig 20, the work becomes very easy.
In addition, by pulling the rope 25 connected to the pulling tool 24 side toward the support frame 12 of the membrane surface structure 10, the membrane body 13 can be moved between the support ropes 11.
We will continue to develop this.

In the above case, each clamp plate 21 of each membrane body clamping jig 20 supports the edge of the membrane body 13 by a line rather than by a point as in the conventional case, so if this membrane body 13 Even if a force is applied due to strong wind or the like, this force is dispersed by each clamp plate 21, and no local force is applied to the supporting portion of the membrane 13 that could damage it.

As described above, when each membrane body 13 is completely expanded with respect to each support rope 11, each membrane body 13 is firmly connected and fixed to the support frame 12.

(Effect of the invention) Therefore, the membrane body clamping jig 20 according to the invention
By using this, it is possible to reliably pull in even a large and heavy membrane, and it also makes it easier to pull in the membrane.

[Brief explanation of the drawing]

Figure 1 is a partial perspective view showing a state in which a part of the membrane is clamped using the membrane retraction clamp jig according to the present invention, and Figure 2 is a view taken along the - line in Figure 1. Partially enlarged view, Figure 3 is a front view of the membrane structure,
Fig. 4 is a plan view of the same, Fig. 5 is a partial perspective view corresponding to Fig. 1 showing another embodiment of the present invention, and Fig. 6 is a partially enlarged view taken along the line of Fig. 5. . Explanation of symbols, 10... Membrane surface structure, 11... Support rope, 12... Support frame, 13... Membrane body, 14...
Reinforcing rope, 20... Clamping jig for membrane body, 21
...Clamp plate, 22...Bolt/nut, 23...Tensioning tool, 24...Retracting tool, 25...Connection rope.

Claims (1)

[Claims for Utility Model Registration] A clamping jig 20 used when unfolding a membrane body 13 wound into a roll, which clamps the edge of the membrane body 13 and tightens bolts and nuts 22.
a pair of clamp plates 21 fixed to each other by
and a tensioning tool 23 fixed to at least one side of the pair of clamp plates 21 and extending in a direction parallel to the edge of the membrane body 13, and a rope 25 connected to this tensioning tool 23. A clamp jig 20 for drawing in a membrane body 13.