CN219280481U

CN219280481U - Sealing wrapping belt for end slope chamfer joint bridge main cable

Info

Publication number: CN219280481U
Application number: CN202320000706.2U
Authority: CN
Inventors: 高瑞雪; 于俊; 吴焕亮
Original assignee: Beijing Xiangyan Technology Co ltd; Beijing Research and Design Institute of Rubber Industry
Current assignee: Beijing Xiangyan Technology Co ltd; Beijing Research and Design Institute of Rubber Industry
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-06-30
Anticipated expiration: 2033-01-03

Abstract

The utility model discloses a main cable sealing wrapping belt of a slope surface chamfer joint bridge at the end part, which mainly comprises an upper covering film, a reinforcing framework layer and a flexible adhesive layer film, wherein the two end parts of the wrapping belt are specially cut in a beveling manner in the cutting process of the wrapping belt, so that the end parts form a slope surface, and a lap joint gap formed by the thickness of the wrapping belt is changed into a slope surface smooth transition, thereby solving the problem of air leakage caused by lap joint dead angles of the wrapping belt. The utility model has simple structure, convenient and quick site construction and good corrosion resistance, air tightness and tightness of the main cable.

Description

Sealing wrapping belt for end slope chamfer joint bridge main cable

Technical Field

The utility model relates to a bridge main cable wrapping belt, in particular to an optimization and improvement of an end structure of the bridge main cable wrapping belt, and belongs to the technical field of rubber products.

Technical Field

After the bridge main cable sealing wrapping belt is installed on the suspension bridge main cable, the air tightness is a key for ensuring the normal operation of a main cable dehumidifying system. One of the two key parts affecting the air tightness of the main cable is a locking clamp, and the other is a wrapping belt. The winding belt is used as a rubber-plastic composite product, has excellent sealing performance, but because the winding belt is limited by the length of each winding belt, the winding sealing work of a single-span main cable cannot be completed by a single winding belt when the main cable is wound, the winding belt needs to be subjected to lap joint in a lap joint mode, a T-shaped joint can be formed at the lap joint part when the winding belt is subjected to lap joint, meanwhile, the thickness of the winding belt influences the winding belt, a dead angle similar to a triangle gap can be formed at the T-shaped joint position, the existence of the gap seriously influences the air tightness of a main cable dehumidification system, and the winding belt is an important cause of failure of the main cable dehumidification system of an oversized suspension bridge. The utility model provides a solution to the problem of leakage at the joint of the wrapping belt of the bridge main cable.

Disclosure of Invention

According to the utility model, the end face structure of the wrapping belt of the bridge main cable is optimized, so that a T-shaped joint is prevented from being formed when the wrapping belt is lapped in a lap-changing manner, the tight lap joint of the joint position is realized, and the problem of leakage at the lap joint position of the wrapping belt is effectively solved.

The utility model is developed and implemented by the following modes:

the utility model provides a sealed tape of twining of end slope chamfer joint bridge main rope mainly comprises upper cover layer film, reinforcing skeleton layer and flexible adhesive layer film, and wherein reinforcing skeleton layer is netted fabric, and the mesh diameter is 0.4mm-0.6mm, twines the tape and need cut into standard specification size product after the vulcanization molding, in the cutting process, carries out the chamfer cutting especially to two ends of twining the tape, makes the end form domatic, and the angle of domatic inclination should be less than the curved cambered surface angle of twining the tape.

According to the sealing wrapping belt for the bridge main cable of the end slope chamfer joint, the sizes of the upper cover layer film and the flexible adhesive layer film are larger than those of the reinforced framework layer, and in the vulcanization process, the rubber material can pass through meshes of the reinforced framework layer and wrap the reinforced framework layer, so that the tight bonding of the two layers of films is realized.

The utility model relates to a sealing wrapping belt for a bridge main cable with a bevel joint at the end part, which is characterized in that in the using process, after a wrapping belt is wrapped on the main cable, a bevel joint at one end of a newly-uncoiled wrapping belt is pressed below the wrapping belt bevel joint after the wrapping is completed, temporary fixation is carried out, and the newly-uncoiled wrapping belt is tensioned and continuously wrapped and heated for fixation. In the lapping process, the bevel face of the end part of the wrapping tape is utilized, the smooth transition of lapping of the two rolls of wrapping tape is realized, the lapping gap formed by the thickness of the wrapping tape is avoided, the new and old rolls of wrapping tape can be tightly jointed at the joint, and the lapping gap is eliminated, so that the anti-corrosion sealing effect of the main cable is effectively improved.

Compared with the bridge main cable wrapping belt used in the current market, the utility model has the following gain effects:

according to the utility model, the end parts of the wrapping tapes are specially treated in a factory, and proper slope chamfers are formed at the end surfaces of the wrapping tapes, so that the new and old wrapping tapes can be tightly attached together when overlapped, a gap generated at the T-shaped joint position due to the thickness of the wrapping tapes is avoided, and the leakage problem of a main cable sealing system is avoided.

Drawings

FIG. 1 is a schematic view of a sealing wrapping belt for a main cable of a bridge with an end slope chamfer joint.

Fig. 2 is a schematic diagram of an end face of a sealing wrapping belt of a main cable of a bridge with an end slope chamfer joint.

Fig. 3 is a schematic view of an end slope chamfer joint bridge main cable sealing wrapping belt field construction application.

Wherein:

and (3) coating the film 1, reinforcing the framework layer 2 and adhering the film 3 flexibly.

Description of the embodiments

Referring to fig. 1-3, the utility model relates to a sealing wrapping belt for a main cable of an end slope chamfer joint bridge, which mainly comprises an upper covering layer film, a reinforcing framework layer and a flexible bonding layer film. Wherein the reinforced skeleton layer is a reticular fiber fabric, and the diameter of the mesh is 0.5mm.

In the formula design, the hardness of the upper covering layer film is slightly higher, and a weather-resistant, ageing-resistant and wear-resistant rubber plastic material is adopted as a main material, so that the upper covering adhesive layer can provide sufficient rigidity for the sealing wrapping belt of the main cable of the bridge of the end slope chamfer joint; the flexible adhesive layer film adjusts the hardness of the material, so that the flexible adhesive layer film has more flexibility, can be fully extended and deformed after being extruded, and is beneficial to compensating gaps generated during lap joint.

When the semi-finished product is prepared, the sizes of the upper cover layer film and the flexible adhesive layer film are slightly larger than those of the reinforced framework layer, and in the vulcanization process, the adhesive material can penetrate through meshes of the reinforced framework layer and wrap the reinforced framework layer after being heated and softened, so that the tight adhesion of the two layers of films is realized.

After the vulcanization is completed, cutting the coiled wrapping tape to prepare a product with standard size specification. In the cutting process, according to the diameter of the main cable of the applied bridge being phi 660mm, the length of the lap-joint wrapping belt is 70mm, and the angle of the formed bending cambered surface is about 6 degrees, so that the slope chamfer at the end face of the wrapping belt is designed to be 5 degrees. After the end slope chamfer cutting is completed, the wrapping belt is cut into standard specification dimensions with the width of 300mm and the length of 30m, and is wound into a roll for standby.

When the main cable is subjected to corrosion-resistant on-site construction, after a coil of wrapping tape is wound on the main cable, the slope surface joint at one end of the newly unwound wrapping tape is pressed below the winding tape slope surface joint, the lap joint width is 70mm, temporary fixation is performed, and the newly unwound wrapping tape is tensioned to continue winding and heating fixation. In the lapping process, the bevel face of the end part of the wrapping tape is utilized, the smooth transition of lapping of the two rolls of wrapping tape is realized, the lapping gap formed by the thickness of the wrapping tape is avoided, the new and old rolls of wrapping tape can be tightly jointed at the joint, and the lapping gap is eliminated, so that the anti-corrosion sealing effect of the main cable is effectively improved.

Claims

1. The utility model provides a sealed package belt of end slope chamfer joint bridge main rope, its characterized in that, package belt mainly by upper cover layer film (1), reinforcing skeleton layer (2), flexible adhesive layer film (3) are constituteed, reinforcing skeleton layer (2) be netted fiber fabric, the mesh diameter is 0.4mm-0.6mm, package belt need cut into standard specification size product after the vulcanization shaping, cut out the cutting process to two ends of package belt special miter, make the end form domatic, the angle of domatic inclination should be less than the cambered surface angle of package belt bending.

2. The sealing wrapping belt for the end slope chamfer joint bridge main cable according to claim 1, wherein the size of the covering layer film (1) and the size of the flexible adhesive layer film (3) are larger than those of the reinforced framework layer (2), and the rubber material can pass through meshes of the reinforced framework layer (2) and wrap the reinforced framework layer (2) in the vulcanization process, so that the two layers of films are tightly adhered.