CN206438402U - A kind of suspension bridge sling replacing system - Google Patents

Abstract

The utility model discloses a cable replacement system for a suspension bridge, which is used for replacing the cable of a suspension bridge, and relates to the technical field of cable replacement for a suspension bridge. a plurality of rollers, the rollers are installed on the base, and a plurality of the rollers are arranged side by side along an arc-shaped path to form an arc-shaped traction path; a sling above the cable clamp is used for lifting the sling The cable is converted between the cable clip and the traction path; two hoisting machines, the hoisting machines are connected to the anchor heads respectively arranged at the two ends of the sling through steel wire ropes. The utility model can quickly and conveniently replace the sling at a lower lifting height.

Description

A Suspension Bridge Cable Replacement System

technical field

The utility model relates to the technical field of suspension bridge suspension cable replacement, in particular to a suspension bridge suspension cable replacement system.

Background technique

Suspension bridge refers to a bridge in which cables (or steel chains) are suspended by towers and anchored to both banks (or both ends of the bridge) as the main load-bearing members of the superstructure. Its cable geometry is determined by the balance of forces and is generally close to a parabola. Many slings hang from the cables to hang the bridge deck. During the long-term use, various diseases will appear in the suspension bridge suspension cables, mainly including: (1) corrosion of the upper and lower anchor heads; (2) anchor loosening, failure, slipping wire; (3) inner wire Corrosion or fatigue broken wires; (4) damage, aging, cracking, and damage to the sling protective sleeve; (5) the axis of the sling is deviated, and the short sling is sheared; (6) the force on the sling steel strand or steel wire is uneven. Due to these defects in the suspension bridge suspension cables, there are serious safety hazards in the safety of the bridge. It is necessary to replace the suspension bridge suspension cables.

In the prior art, the method for removing the sling from the suspension bridge is to lift the steel wire rope sling from the top of the cable clamp directly to the height of the main cable by using the lifting device after releasing the constraint of the lower anchor head. The lifting height of the lifting device needs to be More than twice the height of the main cable clamp. Due to the high height of the main tower of the long-span suspension bridge and the length of the wire rope sling near the tower column is long, the lifting height requirements written by general bridge deck hoisting machines cannot meet such high construction requirements.

Utility model content

Aiming at the defects existing in the prior art, the purpose of this utility model is to provide a suspension bridge suspension cable replacement system, which can quickly and conveniently replace suspension cables at a relatively low lifting height.

For achieving above object, the technical scheme that the utility model takes is:

A suspension bridge cable replacement system for replacing suspension bridge cables, comprising:

cable clip;

A tug wheel installed on the cable clip, the tug wheel includes a base and a plurality of rollers, the rollers are installed on the base, and a plurality of the rollers are arranged side by side along an arc-shaped path to form an arc-shaped traction path;

a sling disposed above the cable clip, the sling is used to hoist the sling to switch between the cable clip and the traction path;

Two hoisting machines, the hoisting machines are connected to the anchor heads respectively arranged at the two ends of the sling through steel wire ropes.

On the basis of the above technical solution, the base includes two semicircular side plates, the two side plates are arranged parallel and opposite each other, a number of rollers are arranged between the two side plates, and some of the rollers are arranged along the sides of the side plates. The arc edges are set at intervals in sequence.

On the basis of the above technical solution, the rollers include rollers and rollers, the two ends of the rollers are respectively installed on the two side plates, the rollers are sheathed on the rollers, and the rollers The subsurface is provided with an arc-shaped concave surface, and several of the roller concave surfaces form the traction path.

On the basis of the above technical solution, ear plates are provided at both ends of the bottom of the side plate, and positioning holes are provided on the ear plates.

On the basis of the above technical solution, a first reinforcing plate connecting the two side plates is provided between the two side plates.

On the basis of the above technical solution, two second reinforcing plates are arranged on one side of the side plate, and the two second reinforcing plates are perpendicular to the bottom of the side plate and are oppositely arranged.

On the basis of the above technical solution, the sling is provided with a centering mark corresponding to the midpoint mark on the sling.

Compared with the prior art, the utility model has the advantages of:

The suspension bridge sling replacement system of the utility model is suitable for replacing the sling when the length of the sling is relatively long and the lifting height of the lifting equipment does not meet the construction requirements. The winch is used to drag the sling to move on the tugboat. The installation and removal of the sling is relatively convenient, and it can solve the problem of insufficient lifting height of the hoisting equipment. It has the advantages of convenient installation, convenient transportation, low cost and high efficiency.

Description of drawings

Fig. 1 is the use state chart of the embodiment of the present invention;

Fig. 2 is the structural representation of tugboat in the embodiment of the present invention;

Fig. 3 is the side view of tugboat in the embodiment of the present invention;

Fig. 4 is the structural representation of roller in the embodiment of the present invention;

Fig. 5 is the schematic diagram of the structure after the transfer of the old sling in the embodiment of the present invention;

Fig. 6 is the structural representation in the moving process of old sling in the embodiment of the present invention;

Fig. 7 is the schematic diagram of the structure after the old sling moves in the embodiment of the present invention;

Fig. 8 is a structural schematic diagram of the start of the movement of the new sling in the embodiment of the present invention;

Fig. 9 is a schematic diagram of the structure of the new sling in the embodiment of the present invention when it is in the conversion position;

Fig. 10 is a schematic diagram of the structure of the new sling in the embodiment of the present invention after switching positions;

Fig. 11 is a schematic diagram of the structure of the new sling in the embodiment of the present invention after it has been installed in place and fixed.

In the figure: 1-cable clamp, 2-tug wheel, 20-base, 21-roller, 22-side plate, 23-roller, 24-roller, 25-traction path, 26-lug plate, 27-first reinforcement Plate, 28-second reinforcing plate, 3-sling, 30-centering mark, 4-anchor head, 5-sling, 50-midpoint mark.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Referring to Fig. 1 to Fig. 4, the embodiment of the present invention provides a suspension bridge suspension cable replacement system, which is used to replace the suspension bridge suspension cable 5, including:

There are several slings 5 straddled on the cable clip 1 and the lock clip 1, and if any of the slings 5 is damaged, it needs to be replaced;

The tugboat 2 installed on the cable clamp 1, the tugboat 2 includes a base 20 and a number of rollers 21, the rollers 21 are installed on the base, a number of rollers 21 are arranged side by side along an arc-shaped path to form an arc-shaped traction path 25, the old sling before replacement needs Move out from the traction path 25, and the new sling after replacement needs to be moved into the lock clip 1 from the traction path; It is arc-shaped, so that there will be no jamming during the movement of the sling, and the traction force required for the movement of the sling is small.

The base 20 includes two semicircular side plates 22 , the two side plates are arranged parallel to each other, a plurality of rollers 21 are arranged between the two side plates 22 , and the plurality of rollers 21 are arranged at intervals along the arc edges of the side plates 22 . Both ends of the bottom of the side plate 22 are provided with ear plates 26, and the ear plates 26 are provided with positioning holes. The bottom of the side plate 22 is fixed on the cable clamp 1 by bolts. During the installation process, the ear plates 26 at both ends of the bottom of the side plate 22 can define the installation position of the base 20, and the base 20 can be installed quickly and conveniently. Roller 21 comprises roller 23 and roller 24, and the two ends of roller 24 are installed on the two side boards 22 respectively, and roller 23 is sleeved on the roller 24, and roller 23 surface is provided with arc-shaped concave surface, and several roller concave surfaces The traction path 25 is formed to ensure that the sling will not deviate from the tugboat 2 during the sliding process and slip out from the tugboat 2. A first reinforcement board 27 connecting the two side boards 22 is disposed between the two side boards 22 . Two second reinforcement boards 28 are disposed on one side of the side board 22 , and two second reinforcement boards 289 are perpendicular to the bottom of the side board 22 and opposite to each other. During the sliding process of the sling 5, the friction between the tugboat 2 and the sling can be reduced by the rotation of the rollers. Since the weight of the sling is relatively large, the setting of the reinforcement plate can increase the structural strength of the tugboat 2 and reduce the friction force between the tugboat 2 and the sling. The volume of the tugboat 2 is increased.

Referring to Fig. 9 and Fig. 10, the sling 3 arranged above the cable clamp 1 is used for hoisting the sling 5, and the sling 3 is provided with a centering mark corresponding to the midpoint mark 50 on the sling 30; when the new sling moves in, the midpoint mark 50 of the new sling corresponds to the centering mark 30, and the movement of the new sling is stopped. It effectively avoids blindly moving the sling, so that the sling can be quickly and accurately installed in place, and the construction effect is accelerated.

Two winches, winches link to each other by wire rope and are respectively located at the anchor head 4 that is located at sling 5 two ends, and a winch is done traction, and another winch is used as insurance.

Referring to Figures 5 to 11, a method for replacing suspension bridge suspension cables is provided, and the specific steps are as follows:

Referring to Fig. 5, use the spreader 3 to hang the old sling from the lock clip 4 to the traction path 25 of the tugboat 2, and make the old sling straddle the tugboat 2;

Referring to Fig. 6, one of the winches winds up the old sling from one end of the old sling, and the winding direction of the hoist is to wind up the inner side of the bridge. See Fig. 7, with the winding of the hoist, the old sling is Move on the traction path 25 until the anchor head at the other end of the old sling moves out of the tugboat 2, and wrap rubber pads on the anchor head before the anchor head moves out of the tugboat 2 to prevent the anchor head from colliding with the traction path 25 of the tugboat 2; when the anchor After the head is completely removed from the tugboat 2, the steel wire rope at the other end of the old sling is straddled on the traction path 25 of the tugboat 2, and the sling is lowered to the bridge deck through the steel wire rope at the other end of the old sling to complete the winding of the old sling;

Referring to Fig. 8, the anchor head at one end of the new sling is towed to the replacement position of the new sling, a hoist is connected to the anchor head through a wire rope, and the wire rope is straddled on the traction path 25 of the tugboat 2, and the hoist winds the wire rope to drive the new sling. The cable moves, and the winding direction of the hoist is toward the outside of the bridge. The new sling is lifted up to the traction path 25 of the tugboat 2. The hoist continues to wind the wire rope, and the anchor head at one end of the new sling moves to the front of the tugboat 2. Wrap the rubber pad on the anchor head until the new sling reaches the installation position, as shown in Figure 9, the midpoint mark of the wire rope at the installation position is opposite to the centering mark position of the sling;

Referring to Fig. 10 and Fig. 11, use a sling to lift the new sling from the traction path 25 of the tugboat 2 to the lock clip 4, and make the new sling straddle the lock clip 4, and install the new sling to fix. In the installation process, the above steps can be repeated, and the new sling is hoisted to the traction path 25 of the tugboat 2 for fine-tuning, and then lowered to the lock clip 4.

Use the sling to hoist the old sling to the tugboat 2, and wind the old sling through the winch. Compared with the lifting height of the sling when the old sling is replaced, the lifting height of the sling in the utility model only needs to be slightly higher than the tugboat 2 That is, the lifting height is low and the requirements for the spreader are not high. The winch winds up the old sling and slides on the tugboat. The friction between the old sling and the tugboat is small, which has the advantages of saving time and effort.

First use the hoist to lift the new sling onto the tugboat 2, and then slide the tugboat 2 into place, and then transfer the tugboat to the lock clip 4 through the spreader. During this process, the lifting height of the spreader is still very low, relatively Compared with the hoisting tool in the prior art, which is directly hoisted on the lock clip, the construction efficiency of the utility model is higher.

The utility model is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. within the scope of the new protection. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (7)

1. A suspension bridge sling replacement system, used to replace the suspension bridge sling (5), is characterized in that, comprising: cable clip (1); The tug (2) installed on the cable clamp (1), the tug (2) includes a base (20) and some rollers (21), the rollers (21) are installed on the base, several of the The rollers (21) are juxtaposed along the arc path to form an arc traction path (25); The sling (3) arranged above the cable clamp (1), the sling (3) is used to hoist the sling (5) between the cable clamp (1) and the traction path (25) Convert between; Two hoisting machines, the hoisting machines are connected to the anchor heads (4) respectively arranged at the two ends of the sling (5) through steel wire ropes. 2. The suspension bridge suspension cable replacement system as claimed in claim 1, characterized in that: said base (20) comprises two semicircular side plates (22), the two side plates are parallel and oppositely arranged, and several rollers (21) are arranged Between the two side plates (22), several of the rollers (21) are sequentially arranged at intervals along the arc edge of the side plates (22). 3. The suspension bridge suspension cable replacement system according to claim 2, characterized in that: the roller (21) comprises a roller (23) and a roller (24), and the two ends of the roller (24) are respectively installed On the two side plates (22), the rollers (23) are sheathed on the roller shafts (24), and the surfaces of the rollers (23) are provided with arc-shaped concave surfaces, and several of the roller concave surfaces form The traction path (25). 4. The suspension bridge suspension cable replacement system according to claim 2, characterized in that: ear plates (26) are provided at both ends of the bottom of the side plate (22), and positioning holes are provided on the ear plates (26) . 5. The suspension bridge suspension cable replacement system according to claim 2, characterized in that: a first reinforcing plate (27) connecting the two side plates (22) is provided between the two side plates (22). 6. The suspension bridge suspension cable replacement system according to claim 2, characterized in that: two second reinforcing plates (28) are arranged on one side of the side plate (22), and the two second reinforcing plates (28) are perpendicular to each other. It is oppositely arranged on the bottom of the side plate (22). 7. The suspension bridge sling replacement system according to claim 1, characterized in that: said spreader (3) is provided with a corresponding pair for use with the midpoint mark (50) on said sling (5) Middle mark (30).