JPH0322449Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention relates to a mechanism for introducing tension at the end of a membrane in a steel pipe frame in a suspension membrane structure.

``Prior Art'' In a suspension membrane structure, as a means to adjust the tension of the ends of the membrane material, generally the ends of the membrane material 1 are folded back as shown in FIGS. 2a and b. Then, weld 2 to form a bag 3, pass a pipe 4 etc. into the bag 3 to form a reinforcing edge frame, and attach a retracting tool 5 to the notch 6 provided at an appropriate pitch. This is achieved by a tension adjustment function using the screw 5a.

When the stop portion at the end of the membrane material is a steel pipe frame, this is accomplished by configuring the fitting portion of the screw 5a on the steel pipe.

``Problems that the invention attempts to solve'' However, the narrative structure has the following difficulties.

The stronger the degree to which the pipe 4 is pulled in (the greater the membrane tension), the more force is generated that tries to separate the welded membrane material 1 at the portion A. In this case, the welded part 2 exhibits destructive properties due to peeling, but in the case of polytetrofluoroethylene coated glass fiber cloth, the peeling strength of the welded part is extremely low, so this method poses a problem when the membrane tension is large.

Due to the presence of the notch 6, it has the disadvantage that it is difficult to shut it off from the rain.

``Means for solving problems'' and ``effects'' This proposal was made in view of the above circumstances, and its gist is that a loose hole is installed on the steel pipe frame in the direction of introducing tension, and a presser plate is installed. Cover the formed membrane end fixing plate to match the outer diameter curvature of the steel pipe that has the assembled stud bolt and retracting hook part, and connect the plate to the steel pipe through the fastening stud bolt provided on the steel pipe. The end of the membrane is folded back and welded to form a bag, a rope is sealed in the bag to form a rope edge, and the end of the membrane is held together with the stud bolt. This eliminates the problem of the membrane end welding part being destroyed by peeling when it is sandwiched between plates, and also eliminates the problem of having to worry about rain protection.

"Example" This will be explained in detail below based on the drawings.

FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 7 indicates a steel pipe frame such as an eaves pipe, which serves as a membrane end attachment part, and the membrane material 1 is attached at its end here.

A fastening stud bolt 8 is provided on the lower surface of the steel pipe frame 7. 9 in the figure is a membrane end fixing plate as a base for fixing the end of the membrane material 1, which includes:
A loose hole 9a, a stud bolt 9b, and a retracting hook part 9c are provided, which are shown by the extended width in the figure, extending along the tension introduction direction, and the fastening stud bolt 8 is loosely fitted into the loose hole 9a. do.

Therefore, the fastening and fixing position of the membrane end fixing plate 9 can be arbitrarily set within the range of the loose hole 9a.

On the other hand, the end of the membrane material 1 is folded back to form a bag portion and welded, and a rope is enclosed in this bag portion to form a rope edge 1a without a notch.

A through hole for the stud bolt 9b is drilled and fitted into the welded portion of the rope edge 1a, and a curved presser plate 1 also having a hole is provided.
It is held down by tightening the nut 11 at 0, the welded part is sandwiched, and the rope edge 1a is locked, creating a stopping structure.

With the above configuration, there is no peeling effect on the welded part, so there is no fear of damage caused by this, and since there is no notch at the edge of the membrane and it is crimped and sealed, it can be sealed in the rain. There is no need to worry about this.

Also, the membrane end fixing plate 9 has a loose hole 9a.
The fixed position can be moved using the guide as shown in FIG.

The membrane end fixing plate 9 is moved using a small jack, chain block, etc. via a retraction hook 9c provided on the plate.

In the figure, reference numeral 12 denotes a chloroprene rubber seal cover for the membrane end fixing portion, one end of which is fixed by a holding plate 10, and the other end is bent and brought into contact with plate 9.

Further, 13 is a cushion made of chloroprene rubber that is preferably inserted in the contact portion between the membrane material 1 and the steel pipe frame 7, and 14 is a cushion with a curved contact pressure surface that is inserted in the cap nut stop of the fastening stud bolt 8. It is a plate.

``Effects of the invention'' As described above, according to the present invention, when the ends of the membrane material are fixed in a tension-adjustable manner, there is no destruction of the ends, the rain closure is perfect, and furthermore, the end of the membrane material is Since the parts are arranged along the outer surface of the steel pipe frame 7, it is very suitable from a design point of view.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the proposed mechanism, and FIGS. 2a and 2b are plan and side views of the conventional stop structure. 7... Steel pipe frame, 8... Stud bolt for fastening,
9... Membrane end fixing plate, 10... Holding plate, 11... Nut, 12... Chloroprene rubber seal cover, 13... Cushion, 14... Plate with curved contact surface.

Claims (1)

[Scope of utility model registration request] The steel pipe has a loose hole extending in the tension introduction direction on the steel pipe frame, a stud bolt assembled with a holding plate, and a retracting latch part, and a plate for fixing the membrane end formed to match the outer diameter curvature of the steel pipe is covered. The plate is fastened and fixed in a position-adjustable manner via fastening stud bolts provided on the steel pipe, while the membrane end is folded back and welded to form a bag portion.
A membrane end tension introduction mechanism in a suspension membrane structure, characterized in that a rope is enclosed in the bag portion to form a rope edge, and the membrane end is sandwiched between the stud bolt and the holding plate.