CN111335164A - A durable sling anchor structure - Google Patents

Abstract

The invention relates to a durable sling anchoring structure, comprising an anchor cup and an annular waterproof sleeve, the front end of the anchoring cavity of the anchor cup is integrally formed into an extension cylinder, and the cable body passes through the extension cylinder and is then anchored in the anchoring cavity , the gap between the cable body and the extension cylinder is filled with sealing packing; the end of the extension cylinder is sealed with the annular waterproof cover, and the mating surface of the annular waterproof cover and the cable body is provided with a sealing ring or the annular The waterproof cover is directly welded on the cable body, a sealing ring is provided on the mating surface of the annular waterproof cover and the extension cylinder, and a sealing ring is provided on the mating surface of the extension cylinder and the cable body. The sling anchoring structure designed by the invention has less components, less connecting structure of the components, more stable overall structure, strong anti-deformation ability, and more reliable sealing effect.

Description

A durable sling anchor structure

technical field

The present invention relates to an anchoring structure for wire harness slings.

Background technique

Suspension bridge slings, especially short slings, are limited by the structural system, the stress of the slings is very complex, and the mid-span position is subject to the beam swing in the transverse and along the bridge direction, which is easy to cause the lower end of the mid-span short sling. The joint position of the anchor cup causes bending damage, which leads to the failure of the sealing structure and causes corrosion fatigue damage. The existing sling anchorage structural system needs to be redesigned and optimized to find a solution that can fully meet the current suspension bridge mid-span short sling usage requirements Structure.

In the sling cable body structure disclosed by the publication number CN108316145A, the anchoring structure of the cable body is mainly composed of a connecting cylinder and an anchor cup. The sling structure disclosed in Publication No. CN110130221A also uses a connecting cylinder and an anchor cup to anchor the end of the cable body. The joint position of the cable body at the lower end of the sling and the anchor cup is threaded connection, and the sealing is made by welding the flange plate on the connecting cylinder and then forming the seal by extruding the O-ring.

The connecting cylinder and the anchor cup are connected by thread, and the sealing of the connection between the connecting cylinder and the anchor cup adopts the welding of the flange plate on the connecting cylinder and then forming the seal by extruding the O-ring. The connecting structure of the connecting cylinder and the anchor cup is easily damaged by bending, which will lead to the failure of the sealing structure and cause corrosion fatigue damage.

At present, the cable end sealing structure of most slings is a half-bolt riveted sealing cover. According to the actual situation, the sealing effect of the sealing cover is greatly affected by construction and bridge vibration, especially in the service conditions where the short sling at the mid-span of the suspension bridge has high-frequency vibration and large deflection of the beam end, and the bolts of the sealing cover are affected by vibration and vibration. The deflection effect is easy to loosen and lead to sealing effectiveness.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a sling anchoring structure. By modifying the anchor cup structure, the connecting cylinder is omitted, and the sling cable body is directly connected with the anchor cup, thereby improving the bending deformation resistance of the anchoring end of the sling.

The technical solution adopted by the present invention to solve the above problems is as follows: a durable sling anchoring structure, comprising an anchor cup and an annular waterproof sleeve, the front end of the anchoring cavity of the anchor cup is integrally formed into an extension cylinder, and the cable body passes through the The extension cylinder is then anchored in the anchoring cavity, and the gap between the cable body and the extension cylinder is filled with sealing packing; the end of the extension cylinder is sealed with the annular waterproof cover, and the annular waterproof cover and the cable body are sealed. The mating surface is provided with a sealing ring or the annular waterproof cover is directly welded to the cable body, the mating surface of the annular waterproof cover and the extension cylinder is provided with a sealing ring, and the mating surface of the extension cylinder and the cable body is provided with a sealing ring.

Preferably, the length of the extension barrel is 50-250mm.

Preferably, the gap between the cable body and the inner wall of the extension cylinder is 5-30 mm, which is convenient for filling the sealing packing.

Preferably, the sealing ring is an extruded special-shaped rubber ring, and the assembly compression rate is 5%-20% to ensure the sealing effect.

Generally, the wire bundles of the cable body are spread out into a cone and anchored in the anchoring cavity of the anchor cup.

Compared with the prior art, the advantages of the present invention are:

(1) The extension cylinder is used to replace the original connection cylinder device. The extension cylinder and the anchor cup are integrally formed without connection structure, which realizes the integrated connection of the sling body and the anchor cup, and improves the reliability of the connection position to the greatest extent.

(2) The waterproof cover adopts an integrally formed ring type instead of the half-Haval structure, which also improves the structural reliability of the waterproof cover and effectively ensures the sealing reliability between the waterproof cover and the cable body.

Description of drawings

Fig. 1 is the schematic diagram of the sling anchoring structure in the embodiment of the present invention;

In the figure, 1 anchor cup, 2 extension cylinder, 3 annular waterproof cover, 4 sealing packing, 5 cable body, 6 sealing ring.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.

As shown in Figure 1, the sling anchoring structure in this embodiment mainly includes an anchor cup 1 and an annular waterproof sleeve 2, the rear end of the anchor cup is a conical anchoring cavity, and the front end of the anchoring cavity is an extension tube 2 with a length of 50mm-250mm, The extension barrel 2 is integrally formed with the anchoring cavity as a part of the anchor cup 1 .

The cable body 6 passes through the extension cylinder 2 and is then anchored in the anchoring cavity. The cable body 5 in the anchoring cavity is anchored in the anchoring cavity in a conical shape after stripping the sheath. The part of the cable body located in the extension cylinder 2 is stripped of the sheath, and sealed in the extension cylinder 2 with the sealing packing 4, and the gap between the extension cylinder 2 and the cable body 5 is controlled at 5-30mm.

The end of the extension cylinder 2 is sealed with an annular waterproof cover 3, the annular waterproof cover 3 is sleeved on the end of the extension cylinder 2, the mating surface of the annular waterproof cover 3 and the extension cylinder 2 is provided with a special-shaped rubber sealing ring 6, and the compression rate is controlled at 5 %～20%, a special-shaped rubber sealing ring 6 is arranged on the mating surface of the extension cylinder 2 and the cable body 5, and the compression ratio is controlled at 5%～20%.

There are two forms of annular waterproof sleeve: one is metal type: it is made by one-time processing as a whole. Compared with the traditional half-riveted structure, the integral structure is more reliable. The mating surface of annular waterproof sleeve 3 and cable body 5 is made of special-shaped rubber. Sealing ring 6, the compression rate is controlled at 5% to 20%; the second is non-metallic type: the typical material is high-density polyethylene material, which can be directly welded outside the cable body 5 to directly realize the sealing of the annular waterproof cover 3 and the cable body 5. Requirements The welding strength is not less than 80% of the body strength.

The sling anchoring structure of the above structure has fewer parts, reduces the connection structure between the parts, the overall structure is more stable, the anti-deformation ability is strong, and the sealing effect is more reliable.

Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations of the present invention will occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A durable sling anchoring structure, characterized in that it comprises an anchor cup and a ring-shaped waterproof sleeve, the front end of the anchoring cavity of the anchor cup is integrally formed into an extension tube, and the cable body passes through the extension tube and is then anchored to the extension tube. In the anchoring cavity, the gap between the cable body and the extension cylinder is filled with sealing packing; the end of the extension cylinder is sealed with the annular waterproof cover, and the mating surface of the annular waterproof cover and the cable body is provided with a sealing ring or The annular waterproof cover is directly welded to the cable body, a sealing ring is provided on the mating surface of the annular waterproof cover and the extension cylinder, and a sealing ring is provided on the mating surface of the extension cylinder and the cable body. 2 . The durable sling anchoring structure according to claim 1 , wherein the length of the extension cylinder is 50-250 mm. 3 . 3 . The durable sling anchoring structure according to claim 1 , wherein the gap between the cable body and the inner wall of the extension cylinder is 5-30 mm. 4 . 4 . The durable sling anchoring structure according to claim 1 , wherein the sealing ring is an extruded special-shaped rubber ring, and the assembly compression rate is 5%-20%. 5 . 5 . The durable sling anchoring structure according to claim 1 , wherein the wire bundles of the cable body are spread out into a cone and anchored in the anchoring cavity of the anchor cup. 6 .

Images