Auxiliary equipment for dismounting and replacing stay cable

Abstract

The utility model discloses a stay cable dismounting and replacing auxiliary device which comprises a steel bottom plate, the steel bottom plate is placed on a bridge, an exposed embedded pipe is arranged on the bridge, the upper surface of the steel bottom plate is rotatably connected with a supporting frame, the face, close to the embedded pipe, of the supporting frame is fixedly connected with an arc-shaped baffle, and the arc-shaped baffle is fixedly connected with the bridge. A stay cable in the embedded pipe can be attached to the arc-shaped baffle, a through hole is formed in the lower half section of the arc-shaped baffle, a Haff clamp is fixed to the upper portion of the stay cable, a winch is fixedly connected to the side, away from the supporting frame, of the steel bottom plate, and a steel wire rope wound on the winch penetrates through the through hole to be fixed to the Haff clamp. By means of tight fit with the exposed embedded pipe of the bridge and supporting and stopping pull-down of the stay cable, the function of assisting stay cable dismounting and replacing is achieved, overall operation is simple, construction operation cost is reduced, and overall construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable replacement construction of cable-stayed bridges, and particularly relates to an auxiliary device for cable removal and replacement of cable-stayed cables. Background Art

[0002] Cable-stayed cables are an important structural form in modern long-span bridges. Especially when erecting extra-large long-span bridges in places where it is not easy to build bridge piers, such as across canyons, bays, large rivers, etc., the bridge types of suspension bridges and cable-stayed bridges are often selected. A cable-stayed bridge consists of stay cables, cable towers, main girders, and bridge decks. The bridge deck load is transmitted to the stay cables through the main girder, and then to the cable towers by the stay cables. The multi-point elastic support of the stay cables on the main girder enables the main girder to be stressed as a continuous beam with multi-span elastic supports under the support of each point of the stay cables, greatly reducing the bending moment in the beam, significantly reducing the size of the main girder, reducing the structural self-weight, and greatly increasing the spanning ability of the bridge;

[0003] Over time, the cable-stayed cables will be damaged to a certain extent. To protect the safety of the bridge, it is necessary to replace the cable-stayed cables. In the common cable replacement process in engineering, due to the long length and heavy weight of the cable-stayed cables, a large amount of human and material resources will be consumed during the construction process, and there are also certain potential safety hazards. Moreover, the overall construction efficiency is low, and the construction may not be completed within the specified construction period. Therefore, an auxiliary device needs to be proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary device for cable removal and replacement of cable-stayed cables, which solves the problems such as the long length and heavy weight of the cable-stayed cables, and the laborious and time-consuming work.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] An auxiliary device for cable removal and replacement of cable-stayed cables includes a steel bottom plate, the steel bottom plate is placed on the bridge, an exposed embedded pipe is arranged on the bridge, a support frame is rotatably connected to the upper surface of the steel bottom plate, an arc-shaped baffle is fixedly connected to one side of the support frame close to the embedded pipe, the cable-stayed cable in the embedded pipe can be attached to the arc-shaped baffle, through holes are arranged in the lower half of the arc-shaped baffle, a Hough clamp is fixed to the upper part of the cable-stayed cable, and a winch is fixedly connected to one side of the steel bottom plate far from the support frame, and the steel wire rope wound on the winch passes through the through hole and is fixed to the Hough clamp.

[0007] As a further scheme of the utility model: Anchor holes are arranged at the two side edges of the steel bottom plate, and the steel bottom plate is fixed on the bridge through the anchor holes.

[0008] As a further scheme of the utility model: The support frame is rotatably connected to the steel bottom plate through a bearing.

[0009] As a further solution of the utility model: the winch, the through hole and the stay cable are located on the same transverse axis plane.

[0010] As a further solution of the utility model: a pulley is installed in the through hole.

[0011] As a further solution of the utility model: on both sides of the side of the support frame away from the arc-shaped baffle, uniformly distributed stress holes are provided. On both sides of the steel bottom plate, support legs are rotatably connected. The support legs cooperate with the stress holes to support the support frame.

[0012] As a further solution of the utility model: one end of the steel bottom plate close to the embedded pipe is arc-shaped. The beneficial effects of the utility model are:

[0013] (1) By rotating the support frame through the bearing and adjusting the angle according to the slope of the stay cable, the arc-shaped baffle is made to fit the stay cable. By blocking and pulling down the stay cable, the function of assisting in the replacement of the stay cable of the stay cable is achieved. Moreover, the overall operation is simple, the cost of construction operations is reduced, and the overall construction efficiency is improved. Description of the Drawings

[0014] The following further describes the present utility model with reference to the drawings.

[0015] Figure 1 is a schematic structural view of the steel bottom plate of the present utility model;

[0016] Figure 2 is a schematic structural view of the support frame of the present utility model;

[0017] Figure 3 is a schematic view of a partial structure of the present utility model;

[0018] Figure 4 is a schematic view of the overall structure of the present utility model;

[0019] In the figure: 1, steel bottom plate; 2, support frame; 3, arc-shaped baffle; 4, anchoring hole; 5, bearing; 6, winch; 7, steel wire rope; 8, through hole; 9, stress hole; 10, support leg; 11, half clamp; 12, stay cable; 13, embedded pipe; 14, bridge. Detailed Embodiment

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4As shown in the figure, the utility model relates to an auxiliary device for replacing stay cables of a cable-stayed bridge, which includes a steel base plate 1. The steel base plate 1 is customized according to the actual situation on site and is placed on the bridge 14 as a whole. One end close to the embedded pipe 13 is arc-shaped, so that the front end of the steel base plate 1 is closely attached to the exposed embedded pipe 13 of the bridge 14, facilitating subsequent construction operations; on the upper surface of the steel base plate 1, there is a support frame 2 rotatably connected through a bearing 5. It can adjust its own angle according to the inclination degree of the stay cable 12 and has a supporting effect on the stay cable 12; on the side of the support frame 2 close to the embedded pipe 13, there is an arc-shaped baffle 3 fixedly connected. The arc-shaped baffle 3 is customized according to the actual situation on site and the specifications of the support frame 2 and is welded to the support frame 2 as a whole. The arc-shaped surface can be attached to the stay cable 12 to prevent the stay cable 12 from rolling when being pulled and rolling out of the entire supporting structure, and when being squeezed by the stay cable 12, it can transmit the force to the support frame 2;

[0022] In the lower half of the arc-shaped baffle 3, there is a through hole 8. On the upper part of the stay cable 12, there is a split clamp 11 fixedly connected. On the side of the steel base plate 1 far from the support frame 2, there is a winch 6 fixedly connected. The steel wire rope 7 wound on the winch 6 passes through the through hole 8 and is connected and wound with the split clamp 11. The winch 6 is selected according to the actual situation on site and simulation calculation to select a suitable specification model for actual construction. It is placed and fixed on the steel base plate 1 as a whole or other favorable positions, corresponding to the through hole 8. The winch 6, the through hole 8 and the stay cable 12 are located on the same transverse axis plane. When working, the steel wire rope 7 generates a downward pulling force due to the winch 6, pulling the split clamp 11 to move downward, thereby driving the stay cable 12 to move downward.

[0023] On both sides of the edge of the steel base plate 1, there are anchor holes 4. Anchor bolts or other anchoring means can fix the steel base plate 1 as a whole on the beam surface of the bridge 14 through the anchor holes 4, preventing the steel base plate 1 from displacing during the construction process and at the same time transmitting the force acting on the steel base plate 1 during the construction process to the bridge 14.

[0024] The through hole 8 is located in the lower half of the arc-shaped baffle 3 and contains a pulley. When the steel wire rope 7 passes through, the pulley can rotate to reduce friction, thereby preventing the steel wire rope 7 from being worn and broken and improving the service life of the steel wire rope 7.

[0025] On both sides of the side of the support frame 2 far from the arc-shaped baffle 3, there are uniformly distributed force holes 9. On both sides of the steel base plate 1, there are support legs 10 rotatably connected. The support legs 10 support the support frame 2 by entering the force holes 9. In addition, when the support frame 2 needs to adjust the angle due to the different slopes of the stay cable 12, the lower ends of the support legs 10 can be disassembled or rotated, and they can change with the change of the angle of the support frame 2.

[0026] Working principle of the utility model: During the replacement process of the stay cable 12, first rotate the support frame 2 through the bearing 5, adjust the angle according to the slope of the stay cable 12, so that the arc-shaped baffle 3 fits the stay cable 12, and use the detachable support leg 10 to support and fix it, and add baffle supports around according to the actual situation on site; operate the winch 6 to move the steel wire rope 7 downward, so that the half clamp 11 drives the stay cable 12 to move towards the exposed embedded pipe 13 of the bridge 14. By closely fitting with the exposed embedded pipe 13 of the bridge 14 and supporting and pulling down the stay cable 12, the function of assisting in the replacement of the stay cable 12 is achieved, and the overall operation is simple, reducing the construction cost and improving the overall construction efficiency.

[0027] The above has described in detail an embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A cable-replacing auxiliary device for a stay cable, comprising a steel base plate (1), wherein the steel base plate (1) is placed on a bridge (14), wherein an exposed embedded pipe (13) is arranged on the bridge (14), and wherein: The upper surface of the steel bottom plate (1) is rotatably connected to a support frame (2); a side of the support frame (2) close to the embedded pipe (13) is fixedly connected to an arc-shaped baffle (3); the inclined cable (12) in the embedded pipe (13) can fit with the arc-shaped baffle (3); a through hole (8) is provided in the lower half of the arc-shaped baffle (3); a half clamp (11) is fixed to the upper part of the inclined cable (12); a winch (6) is fixedly connected to the side of the steel bottom plate (1) away from the support frame (2); a steel wire rope (7) wound on the winch (6) passes through the through hole (8) and is fixed to the half clamp (11).

2. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: Anchor holes (4) are provided at the edges of both sides of the steel bottom plate (1), and the steel bottom plate (1) is fixed to the bridge (14) through the anchor holes (4).

3. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: The support frame (2) is rotatably connected to the steel base plate (1) via a bearing (5).

4. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: The hoist (6), the through hole (8) and the inclined cable (12) are located on the same transverse axial plane.

5. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: A pulley is installed in the through hole (8).

6. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: The support frame (2) is provided with evenly distributed force-bearing holes (9) on both sides of a side away from the arc-shaped baffle (3), and the two sides of the steel bottom plate (1) are rotatably connected with support legs (10), and the support legs (10) cooperate with the force-bearing holes (9) to support the support frame (2).

7. The auxiliary equipment for removing and replacing a stay cable according to claim 1, characterized in that: One end of the steel bottom plate (1) close to the embedded pipe (13) is arc-shaped.

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