JP2851375B2 - Membrane repair method and apparatus for membrane structure building - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for repairing a membrane of a membrane structure building, and particularly to a method and an apparatus suitable for a membrane material to be welded at a high temperature.

[Conventional technology]

It is known to form roofs and the like of buildings with membranes. In this case, paste the individual membrane materials into a panel format,
A structure in which the roof of a building is formed by attaching the membrane panel (membrane panel method), and a structure in which the roof of the building is formed by a single wide membrane itself in which the edges of the individual membranes are bonded to each other. (Membrane connection method).

As a film material of the membrane structure building, generally, a PVC coated glass fiber cloth, a PVC coated polyester fiber cloth, an ethylene tetrafluoride resin coated glass fiber cloth and the like are used. PVC coated glass fiber cloth or PVC coated polyester fiber cloth can be heated to a relatively low temperature (200 ° C) using a high frequency welder, hot air welding machine or hot iron.
Below). A glass fiber cloth coated with an ethylene tetrafluoride resin is welded at a relatively high temperature (for example, 370 ° C.). As a welding apparatus, a hot plate is used in which a film material is sandwiched and pressed to apply heat.

[Problems to be solved by the invention]

After building the above membrane structure building, the membrane may be partially torn or perforated for some reason, and in this case, repair is required.

In the case of the membrane panel type building, the repair is performed by removing the membrane panel at the place to be repaired, lowering it on the ground, repairing it on the ground, and then attaching it again, regardless of the type of membrane material. It can be done easily.

Furthermore, even in the case of a membrane connection type building made of PVC-coated glass fiber cloth or PVC-coated polyester fiber cloth, approach the repair location with a crane etc. and attach a new membrane with a hot iron, etc. Can be easily repaired.

However, in the case of a membrane connection type building made of glass fiber cloth coated with ethylene tetrafluoride resin, it is necessary to apply a hot plate from the top and bottom of the membrane. Have difficulty. For this reason, it is necessary to remove the entire membrane connected to each other and to lower it once on the ground, repair it, and then stretch the entire membrane again. The work of removing and re-stretching the entire membrane is very tedious and time-consuming.

Therefore, an object of the present invention is to provide a repair method and a device capable of repairing a film welded by a hot plate, such as a glass fiber cloth coated with an ethylene tetrafluoride resin, while keeping the film stretched. is there.

[Means for solving the problem]

The purpose of this purpose is to repair membrane structures
The repair device upper half and lower half each having a hot plate,
The upper half and the lower half of this repair device are fixed by suction so as not to move with each other with an electromagnet, and at least one of the hot plates is moved toward the other hot plate. This is achieved by sandwiching the film between both hot plates and heat-welding.

Further, in a membrane repair device for a membrane structure building, the repair device upper half and the lower half each having a hot plate, and the two halves for suction-fixing the repair device upper half and the lower half to each other. This is achieved by providing an electromagnet provided on one of the parts and a magnetic body provided on the other, and a hot plate drive for moving at least one of the two hot plates toward the other hot plate.

[Action]

In the case of the method and apparatus for repairing a membrane of a membrane structure according to the present invention, the upper half and the lower half of the repair device arranged on the upper side and the lower side of the membrane to be repaired are fixed and held together by an electromagnet. Then, the film is welded with a hot plate.

〔Example〕

Next, the present invention will be described in detail based on the embodiment shown in the drawings.

FIG. 1 shows a state in which the upper half 1 and the lower half 2 of the repairing apparatus according to the present embodiment are attracted and fixed to each other by the electromagnet 3 (when not attracted and fixed by the electromagnet 3, the upper half 1 and the lower half 1 are connected). The lower half 2 is separated from the dash-dot line A). FIG. 2 is a plan view of the repair device of FIG.

The repair device upper half 1 has an upper plate 4 as a frame. At the center of the lower surface of the upper plate 4, a piston cylinder device (hot plate driving device) 5 is attached. The piston cylinder device 5 is connected to an external compressor or pump via a hose (not shown). A holding plate 7 is fixed to a lower end of the piston rod 6 of the piston cylinder device 5, and a hot plate 8 is held on the holding plate 7. Film holding plates 9 are fixed to both sides of the hot plate 8.

The heating plate 8 has a heating coil and a cooling water passage (not shown) therein. The heating coil and the cooling water passage are connected to an external power supply or a water supply device via a conductor and a hose. The cooling water may always flow in the cooling water passage, or may flow only during film cooling. The hot plate 8 itself is known and will not be described in further detail here.

Rods 10 are further attached to the four corners of the upper plate 4, and the electromagnet 3 is fixed to the lower end of the rod 10. Power is supplied to the electromagnet 3 via a conductor (not shown).

The repair device lower half 2 includes a lower plate 11 as a frame. In the center of the upper surface of the lower plate 11, a heating plate 12 and a film holding plate
13 is fixed. Further, rods 14 are provided at the four corners of the lower plate 11.
A magnetic body (for example, an iron plate) 15 is attached via the.
This magnetic body 15 is attracted by the magnet 3.

Next, an operation and a repair method of the repair device having the above structure will be described with reference to FIGS.

FIG. 3 shows a film 16 to be repaired between the upper half 1 and the lower half 2 of the repair device and a new film to be welded to the film 16.
FIG. 2 is a right side view of the repair device shown in FIG. In this case, the margin of overlap between the membranes 16 and 17 is, for example, about
80 mm.

The repair is performed while the film (tetrafluoroethylene resin coated glass fiber cloth etc.) 16 is stretched. For this purpose, first, the upper half portion 1 of the repairing apparatus is suspended and carried by a crane or the like above the portion of the membrane 16 to be repaired, and the lower half portion 2 is brought close to the lower side by lifting with a telescopic carriage or the like. Then, the electromagnet 3 is operated to attract and fix the electromagnet 3 and the magnetic body 15 as indicated by an arrow 18. Thereby, the repair device upper half 1 and the lower half 2 are fixedly held to each other. In this state, the piston cylinder device 5 is operated to lower the hot plate 8 as shown by an arrow 19, and the films 16, 17 are sandwiched and pressed between the hot plates 8 and 12. Then, an electric current is applied to the heat generating coils of the hot plates 8 and 12, and the films 16 and 17 are heated at a temperature of, for example, about 370 ° C. for 90 to 120 seconds to be welded. Thereafter, the power supply to the heating coils is stopped, and the films 16, 17 are cooled for 60 to 90 seconds by the cooling water flowing through the cooling water passages of the heating plates 8, 12. The repair is completed by repeating this at another place (another place where the membranes 16 and 17 overlap).

Thus, in the present invention, the films 16, 1 to be welded by a hot plate, such as a glass fiber cloth coated with an ethylene tetrafluoride resin.
7 can be easily repaired while stretched.

4 and 5 schematically show examples of repair. In the case of FIG. 4, a new membrane 17 is placed above the repaired portion of the stretched membrane 16, the edge of the membrane 17 is welded to the membrane 16, and then the membrane 16 is cut off from the cross mark.

In the case of FIG. 5, a new film 17 is welded to the welded portions of the stretched films 16a and 16b, and the film 16b is
Cut off.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments. For example, the electromagnet 3 can be attached to the lower half 2 of the repair device, and the magnetic body 15 can be attached to the upper half 1. Further, the hot plate driving device 5 may be attached to the hot plate 12 of the lower half 2, and the hot plate 8 of the upper half 1 may be directly fixed to the upper plate 4, or the hot plate 8 of the upper half 1 The hot plate drive 5 may be attached to both the hot plates 12 of the lower half 2. In addition to the pneumatic or hydraulic piston cylinder device, for example, an electromagnet, a screw-type tightening device, or the like can be used as the hot plate driving device 5. Further, a hanging tool or a handle can be attached to the upper plate 4 and the lower plate 11. Further, the upper plate 4 and the lower plate 11 as a frame and the rod 10
Can be formed by a shaped steel. Further, the repair method and apparatus according to the present invention can be applied not only to a glass fiber cloth coated with an ethylene tetrafluoride resin, but also to other film materials welded by a hot plate.

〔The invention's effect〕

The membrane repair method and apparatus of the membrane structure building according to the present invention, the upper half and the lower half of the repair device arranged on the upper side and the lower side of the membrane, in a state where they are fixed and held together by an electromagnet, the membrane with a hot plate Since it is made to be welded, a film which is welded by a hot plate, such as a glass fiber cloth coated with ethylene tetrafluoride resin,
It can be repaired while it is stretched.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which an upper half and a lower half of a membrane repair device according to an embodiment of the present invention are attracted and fixed to each other by an electromagnet. FIG. 2 is a plan view of the membrane repair device of FIG. FIG. 3 is a right side view of the repair device shown in FIG. 1 showing a state in which a film is sandwiched between an upper half portion and a lower half portion of the repair device. FIGS. 4 and 5 are schematic views showing repair examples. FIG. 1 ... upper half of the repair device, 2 ... lower half of the repair device, 3
... electromagnet, 5 ... hot plate drive, 8, 12 ... hot plate, 15 ...
… Magnetic material, 16,16a, 16b, 17 …… Film

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 15/00-15/64 E04G 23/02

Claims (2)

(57) [Claims] An upper half and a lower half of a repair device each having a hot plate are arranged above and below a film to be repaired, and the upper half and the lower half of the repair device are mutually connected by an electromagnet. A method for repairing a membrane having a membrane structure, comprising: suction-fixing the membrane so that it does not move, moving at least one of the hot plates toward the other hot plate, sandwiching the membrane between the two hot plates, and heat-welding. 2. An electromagnet provided on one of the two halves for attracting and fixing the upper half and the lower half of the repairing device to each other, and the upper half and the lower half of the repairing device each having a hot plate. And a magnetic body provided on the other side, and a hot plate driving device for moving at least one of the two hot plates toward the other hot plate.