JPH0438045Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" This invention relates to cable intersection clamps in membrane structure buildings.

``Prior Art'' As shown in FIG. 3, the intersection of cables such as a cable net in a membrane structure building is between the upper cable 2 interposed between the cables 2 and 3 and the lower cable receiving part 4. A plate 1b that also includes the saddle seat 5 of the cable 3 (the seat side member and the saddle seat side member may be integrated or engaged as separate members);
A plate 1a having a saddle seat 6 against the cable 2 that presses the upper cable 2, and the cable 3 that presses the lower cable 3 from below.
The cables 2 and 3 are clamped by a clamp 1 which clamps the cables 2 and 3 between three types of plate materials including a plate 1c having a receiving seat 7 for the cable.

The clamp 1 is generally made of steel, and bolt holes 8 for passing through tightening bolts are provided between the stacked plates along both sides of the seat parts 4, 7 and the saddle seats 5, 6. A predetermined number of them are arranged.

``Problem to be solved by the invention'' The intersection of the cables 2 and 3 has a fixing effect due to the resistance force of the clamp 1 against each cable against slipping. When a force is applied to the cable 2 in the direction of the arrow 9, if the slip resistance of the clamp 1 is small, the clamp 1 will slide along the cable 3 in the direction of the arrow 10, and the intersection position will not be fixed.

The same holds true when a force is applied in a direction perpendicular to the cable 3, in which case the clamp 1 will slide along the cable 2.

Cables in membrane structure buildings serve as the base for fixing the membrane, so instability at the cable intersections will result in fluctuations in tension, so the cable intersections must be fixed stably.

In order to increase the fixing effect, that is, the slip resistance, it is possible to strengthen the tightening force of the tightening bolt, but there is a limit to the degree of tightening, and for the reasons described below, no matter how high the tightening force is initially set, the tightening force will not increase. Permanent retention is not possible.

That is, in the above-mentioned intersection clamp 1, the plates are integrated with each other via fastening bolts, but due to the clearance of the bolt holes 8 and the existence of a space between the plates, for example, the movement of the plate 1b causes the plate 1c to move. It is impossible for the force to follow in perfect agreement, and there is a difference in the degree of slip resistance of the upper and lower plates against the cable, which makes it impossible to act uniformly around the entire circumference of the cable, which is not effective, and this force acts repeatedly. As a result, play gradually occurs, and the initially set fastening force cannot be maintained permanently.

In addition, increasing the slip resistance of the plate against the cable can be achieved by increasing the length of the plate and the number of tightening bolts, thereby increasing the degree of tightness between the plate and the cable, but with a membrane structure, it is possible to reduce the self-weight. This is extremely important, and increasing the size of the clamp hardware will increase the weight of the roof itself and cannot be adopted.

The present invention was developed in view of the problems of the conventional technology, and its purpose is to solve the problem of insufficient tracking despite the clearance of the fastening bolt hole and the presence of a gap between the plates. The object of the present invention is to provide a cable intersection clamp that can increase the degree of integrity between the plates and permanently maintain the initial tightening force of the tightening bolt.

"Means for Solving the Problems" In order to achieve the above object, the cable intersection clamp of the present invention is designed to connect the receiving part 4 of the upper cable 2 and the lower cable 3 interposed between the cables 2 and 3. a plate 1b having a saddle seat portion 5;
A plate 1a having a saddle seat 6 against the cable 2 that presses the upper cable 2, and the cable 3 that presses the lower cable 3 from below.
The cable intersection clamp consists of three types of plates: a plate 1c having a seat part 7 for each plate, and tightening bolts are arranged along both sides of the seat parts 4, 7 and saddle seats 5, 6. Connectors are attached to both sides of the receiving seats 4, 7 and the saddle seats 5, 6 between the joints at symmetrical positions with respect to the cable center line.

``Function'' Stress transmission between the plates is performed not only through the tightening bolts but also through the connectors. As a result, the following effect of the plates is enhanced and the degree of unity between the plates is increased, so that loosening of the fastening force due to backlash is eliminated and the durability of the fastening force is increased.

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

1A and 1B are plan and elevation views showing one embodiment of the present invention, and FIGS. 2A to 2D are front and side views of various other embodiments.

In Fig. 1, 11, ... in the figure are the seat parts 4, 7 and saddle seats 5, 6 between each plate joint in the present invention.
pin-shaped connectors attached along both sides of the plate, which are screwed into one of the plates and fitted into fitting holes drilled in the other plate.

In the illustrated example, the connector 11 is arranged between the tightening bolt 8 and the clamp, but it must be configured in a symmetrical arrangement to promote even plate tracking.
Moreover, its shape is free.

For example, FIGS. 2a to 2d show various arrangements and shapes.

That is, each figure omits the upper halves of plate 1a and plate 1b, but in figure a, protrusions 12 are formed on the left and right sides of the front and back of plate 1c, while the projections 12 are formed on plate 1b. It is formed by shaping the hole 17.

In Fig. b, the plate 1b is designed to be longer than the plate 1c, and the front and rear ends are connected to the hanging wall 13.
A fitting recess is formed.

In the case shown in Fig. c, block fitting recesses 14, etc. are formed on the front, rear, left and right sides of the plates 1b and 1c.
If we insert blocks 15, . . . into this, we get the result.

In the case shown in Fig. d, connecting plates 16 are bolted to the left and right sides of plates 1b and 1c with bolts 18, . . . .

Therefore, the stress transmission between the plates is not only done through the tightening bolts, but also through the connectors.

Moreover, since the connectors, like the tightening bolts, are arranged symmetrically with respect to the cable center line on both sides of the seat parts 4, 7 and the saddle seats 5, 6, the degree of unity of movement of the upper and lower plates is significantly increased. As a result, the anti-slip effect on the cable-to-cable contact surface acts uniformly over the entire circumference of the cable, making it more effective and significantly improving its durability.

"Effects of the invention" Since the present invention is constructed as described above,
This produces the following effects.

Since the sliding resistance of the upper and lower plates against the cable acts uniformly, it is effective and the durability of the tightening force of the tightening bolt is increased, thereby increasing the degree of fixation of the cable intersection of the membrane structure building.

[Brief explanation of the drawing]

FIGS. 1a and 1b are plan and elevation views showing an embodiment of the present invention, and FIGS. 2a to 2b show various other embodiments in which the upper halves of the plates 1a and 1b are omitted. It is shown in side view, and Figures 3a and 3b are plan and elevation views of a conventional cable intersection clamp. 1... Clamp, 1a... Plate, 1b...
Plate, 1c...Plate, 2...Cable,
3... Cable, 4... Seat part, 5... Saddle seat part,
6... Saddle seat part, 7... Seat part, 8... Bolt hole,
9...Arrow, 10...Arrow, 11...Connector, 12...Protrusion, 13...Suspension wall, 14...Block fitting recess, 15...Block, 16...
Connecting plate, 17...fitting hole, 18...bolt fastening.

Claims (1)

[Scope of utility model registration request] A plate 1b that includes a seat part 4 for the upper cable 2 and a saddle seat part 5 for the lower cable 3 interposed between the cables 2 and 3, and a saddle seat for the cable 2 that presses the upper cable 2. It consists of three types of plates: a plate 1a having a portion 6, and a plate 1c having a receiving portion 7 for pressing the lower cable 3 from below,
In a cable intersection clamp in which tightening bolts are arranged along both sides of the seat parts 4, 7 and the saddle seats 5, 6, the seat parts 4, 7 and the saddle seats 5, 6 between each plate joint. A cable intersection clamp for a membrane structure building, characterized in that connectors are attached on both sides in a symmetrical arrangement with respect to the cable centerline.