JP2000002022A - Method and device for stretching long-sized membrane material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stretch a long-sized membrane material in a membrane roof, etc., efficiently on a foundation. SOLUTION: The membrane material N is unwound from a roll R supported by saddles 11a, 11b travelling on rails installed to foundations 1a, 1b, on which the membrane material N must be stretched. The edge sections of the membrane material N are gripped by grippers 22 being mounted on the saddles 11a, 11b and capable of being moved in three dimensions and the grippers 22 are removed and the membrane material N is pushed and spread up to the places of installation and the membrane material N is clamped by clamps.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stretching a long film material such as a long film roof using a film material and an apparatus for carrying out the method.

[0002]

2. Description of the Related Art Conventionally, a membrane roof has been stretched mainly on a steel truss or a lattice frame. One example is shown in FIG.
This will be described with reference to FIG.

In FIG. 10, a film material N is wound around a roll R, and the roll R is suspended by a hook H of a crane (not shown).

On the other hand, a roof on which the film material N is to be stretched has a pair of steel frames 1a and 1b having substantially the same width as the film material N.
The steel frame 1a, 1b, outside the steel frame 1
a, a reaction force receiving rod 3 through a plurality of stays 2 in parallel with 1b.
a, 3b are fixed. A plurality of temporary clamps 4 are attached to both edges of the film material N, and a tensioning device 5 such as a lever block is stretched between the temporary clamps 4 and the reaction force receiving rods 3a and 3b. I have. In the figure, reference numeral 10 denotes a net provided so that the film material N does not drop or scatter. At the time of work, the film material N is unwound from the roll R suspended by the hook H, the temporary clamps 4 are attached to both edges thereof, and the film material N is Pull to spread. If necessary, the temporary clamp 4 is further attached as shown in FIG. When the film material N is pulled in this way and both edges are positioned at the steel frames 1a and 1b, the main clamp 6 is attached to both edges and the steel frame 1a,
Temporarily fix to 1b with bolts. Then the reaction force receiving rods 3a, 3
Temporary materials and curing materials such as b, net 10 and tensioner 5 are removed.

Such a work requires a large number of workers for manual work for mounting the temporary clamp 4 and the main clamp 6, and also requires a large number of temporary members for the tensioning machine 5 and the reaction force receiving rods 3a and 3b. Therefore, it took much time and efficiency was poor.

[0006] Japanese Patent Application Laid-Open No. 10-2132 discloses a technique for stretching a double membrane, but also requires a large amount of labor.

[0007]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a work for unwinding a film material and performing primary fixing work with a small number of people, thereby improving work efficiency. A method and an apparatus therefor are provided.

[0008]

According to the present invention, there is provided a method for stretching a long film material for stretching a long film material on a base by stretching the long film material. The rolls on which the film material is wound are rotatably mounted. The saddles provided on both sides of the main body are run on the rails to unwind the film material and move in the three-dimensional directions provided on the saddles. Grab the edge of the membrane with the gripper that can be made, expand the grasped membrane and expand it to the mounting position, then pull the membrane in the longitudinal direction, attach it to the base with a clamp, release the gripper and run the saddle Then, the above operation is repeated.

Further, according to the present invention, there is provided a long film material stretching apparatus for stretching a long film material to stretch it on a base.
A rail provided on the base on which the film material is stretched, a saddle provided on the rail so as to be able to travel by a traveling cylinder, a main body portion rotatably provided on the saddle and provided with a roll of film material, and a saddle A gripper is provided which can be moved three-dimensionally by the provided first, second and third cylinders and which grips the edge of the film material.

Therefore, it is sufficient to grip the edge of the film material with the gripper while unwinding the film material from the roll, move the film material to the mounting position, pull the film material, and fix the film material to the base with a clamp. Therefore, as temporary equipment, only the welding of rails is required, and a small number of workers can perform efficient filming work.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an apparatus embodying the present invention. Pipe-shaped steel frames 1a and 1b, which are the bases on which the film material N is to be stretched, are connected in the longitudinal direction by flanges F. The steel frames 1a and 1b are connected to each other by another steel frame 1c extending at right angles to the steel frames 1a and 1b to form a rigid structure. The other steel frame 1c is provided with a framework 1d for laying the film material N. The roll R around which the film material N is wound is rotatably supported by a main body 12 having a pair of saddles 11a and 11b on both sides. FIG.
It is a figure showing an example of a traveling device of saddles 11a and 11b. Since this traveling device is the same on both sides of the main body 11, only one of them will be described.

The steel frame 1a is provided with a rail 15 comprising a web portion 14 and a flange portion 13 whose lower ends are welded to the steel frame 1a. The stays 16a and 16 are provided on the saddle 11a.
The wheel 17 is rotatably provided via the b, and runs on the flange portion 13.

On the other hand, other stays 18a, 18b fixed to the saddle 11a have side rollers 19a, 19b, respectively.
b is rotatably provided and sandwiches the web portion 14. Further, a guide 20 for preventing lifting fixed to the saddle 11 a is located below the flange portion 13.
In the figure, reference numeral 21 denotes a part of a film retraction device 30 described later,
Reference numeral 22 denotes a gripper for the film material N. The saddle 11a,
11b, if one of them is slidable to the position shown by the dotted line 11c with respect to the main body 12, the side rollers 19a,
In conjunction with 19b, it can follow a change in span. When the heights of the left and right rails 15 are different, it is preferable to support a saddle having a fixed force to slide down.

As shown in FIGS. 1 and 4, each saddle 11a, 11b is provided with a traveling cylinder 21a, 21b, respectively.
have. As shown in FIG. 4, the traveling cylinder 21a includes a first bracket 23a and a second bracket 23b that can be pin-coupled to a pin hole (not shown) formed in the web portion 14 of the rail 15, and the first bracket 23
a, a main body 24 is attached to the second bracket 23.
A rod 25 operated by the main body 24 is attached to b. Therefore, both brackets 23a, 23b are alternately replaced with pins, and both saddles 11a, 11a,
1b can be driven. In addition, both saddles 11
In order to run a and 11b in synchronization with each other, a known mode can be used using an inverter or the like. In FIG. 3, reference numeral 40 denotes a film delivery brake, and 41 denotes a cylinder for adjusting the position of the roll R, all of which are attached to the main body 12. Further, in FIG. 4, R1 is connected by an auxiliary rail with bolts.

FIG. 6 shows another example of the traveling apparatus. In this example, the flange portion 13 of the rail 15 shown in FIG. 5 is eliminated, and a projecting portion 28 is provided in the middle. Therefore, the floating prevention guide 20 is adapted to engage with the lower side of the protrusion 28. Since other points are substantially the same as those in FIG. 5, they are denoted by the same reference numerals.

Next, referring to FIGS. 1 to 4, a description will be given of a film retraction device indicated generally by reference numeral 30. FIG.

A gripper 22 for gripping the film material N is movably mounted on a rod-like member 21 extending in the running direction, that is, in the front-back direction, and is moved by a first cylinder (that is, a front-back direction cylinder) 31 pin-connected 33 to a saddle. It has become so. A pair of second cylinders (left-right cylinders) 34, 34 for moving the bar-shaped member 21 in a direction perpendicular to the traveling direction, that is, in the left-right direction, are connected to a bracket 32 attached to the saddles 11a, 11b by pins. A third cylinder (vertical cylinder) 36 for vertically moving a rod 35 connecting the pair of second cylinders 34, 34 to each other is also pin-pivoted.

Therefore, the gripper 22 can be moved up and down, left and right, and back and forth with respect to the saddles 11a and 11b by operating the first to third cylinders 31, 34 and 36.

Next, the operation will be described mainly with reference to FIGS. In the embodiment shown in FIG. 3, end ropes E are fixed to both edges of the film material N. As shown in FIG. 7, the membrane retraction device 30 is operated to grip the end rope E with the gripper 22. In this case, the position of the end rope E of the film material N is located on the inner side of the mounting position, that is, the upper part A of the steel frame 1a.

When the gripper 22 grips the end rope E, the second and third cylinders 3 are moved as shown in FIG.
4 and 36 are operated to move the gripper 22 to the mounting position on the steel frame 1a. Then, the end rope E between the gripper 22 and the previously attached clamp C is positioned on the steel frame 1a to be clamped.

Therefore, as shown in FIG.
At 4, the end rope E, that is, the membrane material N is pulled, and the end rope E is clamped on the steel frame 1a by the new clamp C1.

Next, the gripper 22 is loosened to release the end rope E, the traveling cylinders 21a and 21b are operated to move the saddles 11a and 11b, and the film material N is unwound. Thereafter, this operation is repeated.

As described above, according to the present invention, the film material N can be gripped by the gripper 22 that can move in the three-dimensional direction and can be clamped at the predetermined mounting position A while being pulled.
The film material N can be efficiently stretched. When the saddle, for example, the saddle 1a slides, the roll R is preferably always located at the center between the two saddles. For this purpose, means for linking the roll R with the saddle by half the amount of movement of the saddle, for example, a cylinder, a rack and a pinion device, a chain device, or the like that moves half the amount of displacement of the saddle can be used.

The traveling cylinder and the first to third cylinders may be hydraulic or electric.

[0026]

As described above, according to the present invention, the membrane material is wound around the main body that can travel on the steel frame, the end of the membrane material is gripped, and the membrane material is three-dimensionally pulled and attached. Since it is moved to the position and clamped, the membrane material can be efficiently stretched on the steel frame. This eliminates the need for lever blocks and temporary materials that were conventionally required, minimizing the number of workers and improving construction speed. Also, it is sufficient to temporarily install the rails, and the removal work is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a long film material stretching apparatus embodying the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a side view of FIG. 1;

FIG. 5 is an explanatory view showing an example of a traveling support portion of the saddle.

FIG. 6 is an explanatory view showing another example of the traveling support portion of the saddle.

FIG. 7 is a perspective view showing where to grip the edge of the membrane material according to the present invention.

FIG. 8 is a perspective view showing a state where an edge of the gripped film material is pushed out and extended to an attachment position.

FIG. 9 is a perspective view showing a cross section in which the film material is further pulled in the longitudinal direction and clamped.

FIG. 10 is an explanatory view showing a conventional example of unwinding a film material.

FIG. 11 is a perspective view showing a conventional example in which a film material is pulled and clamped.

[Explanation of symbols]

 1a, 1b ... steel frame 11a, 11b ... saddle 12 ... main part R ... roll N ... film material 15 ... rail 21a, 21b ... traveling cylinder 22 ... gripper 30 ... Film retraction device 31 ... First cylinder 34 ... Second cylinder 36 ... Third cylinder

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mitsuru Yokoyama 1-7-7 Moto Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Takashi Takahashi 1-chome Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Kawaichiro Ichiro 1-7-2 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Naoya Sasaki Toyorou, Koto-ku, Tokyo Chome 3-2 Kashima Construction Co., Ltd.Kanto Branch (72) Inventor Mochi Tsukasa 4-4-2 Midori Yoshinaga Machinery Co., Ltd. Sumida-ku, Tokyo (72) Inventor Junichi Motohashi Sumida-ku, Tokyo Midori 4-chome 4-3 Yoshinaga Machinery Co., Ltd. F-term (reference) 2E141 AA01 AA07 EE04 EE24 HH01

Claims (2)

[Claims] 1. A method of stretching a long film material for stretching a long film material on a substrate, comprising: providing a rail on the substrate on which the film material is to be stretched; The saddles provided on both sides of the main body part rotatably mounted are run on the rail to unwind the film material, and the edges of the film material are gripped by grippers provided on the saddles and movable in three dimensions. Then, the gripping film material is expanded and extended to the mounting position, then the film material is pulled in the longitudinal direction, mounted on the substrate with a clamp, the gripper is released, the saddle is run, and the above operation is repeated. A method of stretching a long film material. 2. A long film material stretching apparatus for stretching a long film material and stretching the film material on a base, a rail provided on the ground on which the film material is stretched, and a traveling cylinder running on the rail. A three-dimensionally movable saddle, a main body part supported on the saddle and rotatably provided with a roll of film material, and first, second and third cylinders provided on the saddle; and A stretching device for a long film material, comprising: a gripper for gripping an edge of the film material.