JP2582676Y2 - Jig for installation of intersection clamp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention is used when an intersection clamp for connecting each intersection of a suspension cable and a holding cable as a base on which a membrane material of a two-way curvature membrane roof is stretched is installed at the intersection. Related to a work jig.

[0002]

2. Description of the Related Art As a large-area membrane roof, a membrane roof having a smooth positive and negative two-way curvature made of a Teflon membrane or the like, or a membrane roof made of a frame having a small divided membrane surface is generally used. In addition, a cable net membrane structure has been proposed in which a cable net is arranged on the indoor side of the membrane roof to resist an external force so that a large and smooth curved roof, which has been impossible so far, can be freely created. As shown in FIG. 3, the cable net membrane structure is such that the suspension cable 1 is arranged symmetrically on both sides of the arched keel beam 19 as a center, and the cable is pressed upward in a direction orthogonal to the suspension cable 1. By arranging the cable 2 and applying an appropriate tension to each cable, a cable net having a two-way curvature is formed. A film material is stretched on the cable net. In the cable net structure shown in FIG. 3, each intersection 6 between the suspension cable 1 and the holding cable 2 is firmly connected by the intersection clamp 20 shown in FIGS. 4A and 4B, and a strong cable net is formed. The intersection clamp 20 has three steel plates 20a, 20b, 20c as shown in FIG. 4B.
In this configuration, the intersections of the suspension cable 1 and the holding cable 2 are sequentially sandwiched, and the bolts 21 are commonly passed and fastened.

[0003]

[Problem to be solved by the present invention] A diameter of 30 to 40 mm
Since a tension of several tons is introduced into the thick suspension cable 1 and the holding cable 2 which have a certain thickness, an operation of sandwiching the intermediate steel plate 20b between the suspension cable 1 and the holding cable 2 when installing the intersection clamp 20 is performed. Is very difficult with human power. Therefore, there is a problem that the workability and safety of the installation work of the intersection clamp 20 are insufficient.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a jig for installing an intersection clamp which can easily and safely install an intersection clamp at an intersection between a suspension cable having a cable net film structure and a holding cable.

[0005]

As a means for solving the above-mentioned problem, a jig for installing an intersection clamp according to the present invention is a film having a two-way curvature film roof as shown in FIGS. A jig used to install an intersection clamp 20 that joins the intersections 6 of the suspension cable 1 and the holding cable 2 of the cable net on which the material is stretched.
Jack position on a vertical line B-B that is horizontally bridged through the intersection 6 between the intersection 6 with a plurality of hooks 8 to be hooked on to that symmetrical positions centered on the plurality of hooks 8 in Jack support 3 provided with the intersection 5 and the intersection 6
A plurality of cables receiving 10 receiving the presser cable 2 at the center and to that symmetrical position, said at a position on a vertical line B-B that is horizontally bridged through the intersection 6 between the cable receiving portion 10 A holding cable supporting member for receiving the jack; the extension of the jack pushes and opens the space between the suspension cable and the holding cable at the intersection.

According to the present invention, a height adjusting plate 7 is connected below the plurality of hooks 8 hooked to the suspension cable 1, and a plurality of adjusting holes 7a are formed below the height adjusting plate 7 in a height direction. The height adjustment plate 7 and both ends of the jack support 3 can be adjusted in vertical length (height) by tightening bolts 21 into the adjustment holes 7a. I do.

[0007]

The hooks (8, 8) of the jack support (3) are hooked on the suspension cable (1) at a position centered on the position passing through the vertical line (BB) at the intersection (6) of the suspension cable (1) and the holding cable (2). Hold the cable receiving part 10 of the cable 2
When the jack 5 positioned in the vertical line BB is extended from below, the jack support 3 pulls down the suspension cable 1 via the hook 8 as a reaction, and The cable receiving portion 10 of the support 4 pushes the presser cable 2 upward, and a necessary and sufficient space for sandwiching the steel plate 20b in the middle of the intersection clamp 20 between the cables 1 and 2 is secured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a suspension cable 1 and a holding cable 2
FIG. 2 is a front view of a jig for setting an intersection clamp used in FIG. 1, and FIG. 2 is a cross-sectional view taken along line AA of FIG. In joining the intersection 6 of the suspension cable 1 and the holding cable 2 by the intersection clamp 20 of FIGS. 4A and 4B, this jig includes a jack support 3 for lowering the suspension cable 1 and a holding cable support 4 for pushing up the holding cable 2. And jack 5
It is composed and used.

The jack support 3 is formed by cutting a grooved steel into an appropriate length (for example, about 54 cm), and is directed vertically upward at a position where the vertical line BB at the intersection 6 of the suspension cable 1 and the holding cable 2 passes. Jack 5 is provided. Height adjusting plates 7 are connected to both ends of the jack support 3 by bolts 21 and provided in a vertical direction. A plurality of adjustment holes 7a are provided in the lower part of the height adjustment plate 7 in the vertical direction. The height adjusting plate 7 has a mounting hole 7b at the upper end, and a hook 8 to be hooked on the hanging cable 1 is mounted to the mounting hole 7b with a bolt 21. The height adjusting hole 7a is provided with the jack 5
It is used when adjusting the height of the jack support 3 in the vertical direction according to the height of the jack support 3. The hook 8 is formed in an inverted U-shape (FIG. 2), suspended one that confers a lowered acting on the cable 1, hanging the intersection 6 of the cable 1 centered hanging symmetrical positions in FIG. 1 Can be stopped. The hook 8 may be a cantilever type (the shape of a normal hanging hook) in which one end is open and wide enough to allow a cable to pass therethrough, in addition to the both-end supporting type shown in the figure.

[0010] The holding cable support 4 is also formed by cutting a grooved steel into an appropriate length (for example, about 50 cm).
Vertical line B at the intersection 6 of the suspension cable 1 and the holding cable 2
The configuration is such that the upper end of the jack 5 abuts on the position where −B passes. Vertical members 9 are provided at both ends of the holding cable support 4.
Are joined upward, and a semicircular groove-shaped cable receiving portion 10 is joined to the upper end of the vertical member 9 so as to abut against the holding cable 2 from below to give a pushing-up action. The cable receiving portion 10 is centered on the intersection 6 of the holding cable 2.
It is arranged so as receive a presser cable 2 in symmetrical positions in FIG. 2 and.

Therefore, when the jack 5 is extended, the suspension cable 1 is pulled down by the hooks 8 at both ends of the height adjusting plate 7 as a reaction. On the other hand, the holding cable 2 is pushed upward by the cable support 4 and the cable receiving portion 10, and a considerable space is generated between the two cables around the intersection 6. Therefore,
Using this interval, the intersection clamp 2 shown in FIGS.
It is easily possible to sandwich the intermediate steel plate 20b at zero. Therefore, installation of the intersection clamp 20 is easy and can be performed safely. After use, the jack 5 is contracted and loosened, and the jig is moved to the position of the intersection 6 of the next work target.

[0012]

According to the jig for installing the intersection clamp according to the present invention, the joining work by the intersection clamp 20 at the intersection 6 of the suspension cable 1 and the holding cable 2 having the cable net structure can be performed easily and safely. You.

[Brief description of the drawings]

FIG. 1 is a front view of a jig for installing an intersection clamp attached to a suspension cable and a holding cable.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a perspective view illustrating a cable net structure.

4A is a top view of the intersection clamp, and FIG. 4B is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension cable 2 Holding cable 6 Intersection of suspension cable and holding cable 20 Intersection clamp 3 Jack support 8 Hook 4 Holding cable support 5 Jack 7 Height adjustment plate 10 Cable receiving part 7a Adjustment hole 21 Bolt

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Niimura 10-10 Hashimotocho, Naka-ku, Hiroshima City, Hiroshima Prefecture Inside Hiroshima Branch of Takenaka Corporation (72) Eiji Matsui 10 Hashimotocho, Naka-ku, Hiroshima City, Hiroshima Prefecture No. 10 Inside Takenaka Corporation Hiroshima Branch (72) Inventor Yasuo Goehara 10-10 Hashimotocho, Naka-ku, Hiroshima City, Hiroshima Prefecture Inside Inside Takenaka Corporation Hiroshima Branch (72) Inventor Yuji Hamasaki Amagasaki City, Hyogo Prefecture 10-1 Nakahamacho Shinko Steel Wire Industry Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 15/00-15/64 E04G 21/18

Claims (2)

(57) [Scope of request for utility model registration] 1. A jig for installing an intersection clamp connecting an intersection of a suspension cable and a holding cable of a cable net for stretching a membrane material of a two-way curvature membrane roof, wherein the juncture is provided around the intersection of the suspension cable. center and the plurality of hooks are hooked to the symmetric positions you, the jack support which is provided with a jack in the position on the vertical line passing through the horizontally bridged to the intersection between the plurality of hooks, the intersection and pressing undergoing the jack at the position on the vertical line passing through a plurality of cables receiving portion receiving a pressing cable, horizontally bridged to the intersection between said cable receiving portion in to that symmetrical positions <br/> and A jig for setting an intersection clamp, comprising: a cable support, wherein the extension of the jack pushes the gap between the suspension cable and the holding cable at the intersection. 2. A height adjusting plate is connected below a plurality of hooks hooked on the suspension cable, and a plurality of adjusting holes are provided in a lower part of the height adjusting plate in a height direction. 2. The jig for mounting an intersection clamp according to claim 1, wherein both ends and the height adjustment plate are adjustable in length in a vertical direction by fastening a bolt through the adjustment hole. 3.