Quick closure device for cable-stayed bridge

Abstract

The utility model relates to cable -stayed bridge connecting technical field provides a kind of cable -stayed bridge quick closure device, including fixed wall being fixedly installed on closure section A and closure section B, the fixed wall inside both ends are embedded with core barrel, installation platform is provided between closure section A and closure section B, the installation platform is installed with pull cable device, steel strand is arranged between the core barrel, the both ends of steel strand are installed at the pull line end of pull cable device, the both sides core barrel end face are respectively fixedly connected with first connecting block and second connecting block, two symmetrical distribution laser emitters are fixedly installed on the second connecting block, and the first connecting block is equipped with positioning acceptance point corresponding laser emitter installation place.The utility model, by the laser emitter on the second connecting block, laser plummet can be emitted, cooperate the positioning acceptance point on the first connecting block, so that the first connecting block and the second connecting block are on the same axis, determine its installation position.

Description

Technical Field

[0001] This utility model relates to the field of cable-stayed bridge connection technology, and in particular to a rapid closure device for cable-stayed bridges. Background Technology

[0002] Bridge closure segment closure refers to the assembly of individual bridge segments (usually prefabricated bridge components) one by one after the BIM design and calculations are completed during bridge construction, ultimately forming the entire bridge span. During the closure segment closure process, cranes and other equipment are typically used to lift each bridge segment to its designated position and precisely position it to ensure a perfect fit with the connection points of adjacent segments. Once lifted into place and accurately positioned, it needs to be secured promptly, usually using methods such as welding to firmly connect the bridge segments together.

[0003] An existing authorized announcement number CN221919009U discloses a rapid closure device for cable-stayed bridges, which includes a fixed structure comprising a first mounting plate and a second mounting plate arranged relatively vertically, both of which are provided with reinforcing components on their inner sides; a steel strand, the fixed end of which is movably fixed to the first mounting plate through a first anchor located on the outer side of the first mounting plate; and a tensioning machine, the free end of which is connected to the hydraulic jack of the tensioning machine.

[0004] Although this device, through the use of steel strands and a tensioning machine, gradually reduces the distance between the closure section and adjacent sections until the required closure dimensions are achieved, thus enabling rapid adjustment of the closure dimensions, saving closure time and shortening the construction period, the device requires the fixed structures at both ends to be on the same axis during use. However, the device lacks a positioning mechanism, making it difficult to align during installation. Misalignment can easily lead to tension differences, which may cause construction errors. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology where this device, through steel strands and a tensioning machine, gradually reduces the distance between the closure segment and adjacent segments until the required closure size is achieved, thus realizing rapid adjustment of the closure size, saving closure time and shortening the construction period. However, this device needs to be accurately installed at the BIM design location, but it lacks a positioning mechanism, making it difficult to align during installation. Misalignment can easily lead to tension differences, which may cause construction errors.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a rapid closure device for a cable-stayed bridge, comprising closure segment A and closure segment B, including fixed walls fixedly installed on closure segment A and closure segment B, with core cylinders embedded in both ends of the fixed walls, an installation platform provided between closure segment A and closure segment B, a cable puller installed on the installation platform, steel strands threaded between the core cylinders, with both ends of the steel strands installed at the pull ends of the cable puller, a first connecting block and a second connecting block fixedly connected to the end faces of the core cylinders on both sides, two symmetrically distributed laser emitters fixedly installed on the second connecting block, and positioning receiving points provided at the laser emitter installation locations on the first connecting block, allowing the laser emitter on the second connecting block to emit a vertical laser line, which, in conjunction with the positioning receiving points on the first connecting block, ensures that the first connecting block and the second connecting block are on the same axis, thus determining their installation positions.

[0007] In a preferred embodiment, the fixed wall is fixedly connected to its lower closure section A or closure section B by a plurality of evenly distributed reinforcing ribs, which improve the overall integrity and stability during closure.

[0008] In a preferred embodiment, multiple limiting guide frames are provided on both the closure section A and the closure section B. The limiting guide frames are located at the corners of the steel strands and serve to guide the movement of the steel strands.

[0009] In a preferred embodiment, the limiting guide frame includes an installation column fixedly connected to the closure section A or the closure section B. A rotating ring is fixedly connected to the top of the installation column, and limiting plates are fixedly connected to both ends of the rotating ring. By setting the limiting plates, the steel strand is limited to prevent it from being thrown out when the steel strand is pulled, thus reducing safety hazards.

[0010] In a preferred embodiment, a fixing plate is provided at the rear end of the core cylinder. The fixing plate is fixedly connected to the core cylinder and the first connecting block by a steel pin, and the fixing plate serves to connect and fix the wall and the core cylinder.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] This invention utilizes a laser emitter on the second connecting block to emit a vertical laser line. This line, combined with a positioning receiver on the first connecting block, ensures that the first and second connecting blocks are aligned on the same axis, thus determining their installation positions. This prevents tension differences when the steel strand is pulled, reducing construction errors. Subsequently, a cable puller synchronously pulls both ends of the steel strand, and the tension is transferred to closure sections A and B in conjunction with the core cylinder and the fixed wall, bringing them closer together and achieving rapid closure. Attached Figure Description

[0013] Figure 1 A three-dimensional structural schematic diagram of a rapid closure device for cable-stayed bridges provided by this utility model;

[0014] Figure 2 A three-dimensional structural schematic diagram of a rapid closure device for cable-stayed bridges provided by this utility model;

[0015] Figure 3 A three-dimensional structural diagram of the first connecting block of a rapid closure device for a cable-stayed bridge provided by this utility model;

[0016] Figure 4 A three-dimensional structural diagram of the second connecting block of a rapid closure device for cable-stayed bridges provided by this utility model;

[0017] Figure 5 This utility model provides a rapid closure device for cable-stayed bridges. Figure 1 Enlarged view of a portion of point A in the middle.

[0018] Legend:

[0019] 1. Closure Section A; 2. Closure Section B; 3. Mounting Platform; 4. First Connecting Block; 5. Second Connecting Block; 6. Cable Puller; 7. Steel Strand; 8. Limiting Guide Frame; 801. Mounting Column; 802. Rotating Ring; 803. Limiting Plate; 9. Core Cylinder; 10. Fixing Plate; 11. Laser Emitter; 12. Positioning Receiving Point; 13. Fixing Wall; 14. Reinforcing Rib. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a rapid closure device for a cable-stayed bridge, including a closure segment A1 and a closure segment B2, including a fixed wall 13 fixedly installed on the closure segment A1 and the closure segment B2, with a core cylinder 9 embedded in both ends of the fixed wall 13, and an installation platform 3 provided between the closure segment A1 and the closure segment B2. The installation platform 3 can be temporarily constructed by a crane or truss and can be dismantled after use.

[0022] A cable puller 6 is installed on the mounting platform 3. Steel strands 7 are threaded between the core cylinders 9. Both ends of the steel strands 7 are installed at the pull ends of the cable puller 6. The end faces of the two core cylinders 9 are respectively fixedly connected to the first connecting block 4 and the second connecting block 5. Two symmetrically distributed laser emitters 11 are fixedly installed on the second connecting block 5. The first connecting block 4 is provided with positioning receiving points 12 at the installation positions of the laser emitters 11. The laser emitters 11 on the second connecting block 5 can emit laser vertical lines. With the help of the positioning receiving points 12 on the first connecting block 4, the first connecting block 4 and the second connecting block 5 can be placed on the same axis to determine their installation positions. Then, the cable puller 6 pulls the two ends of the steel strands 7 synchronously. With the help of the core cylinders 9 and the fixed wall 13, the tension is transmitted to the closure section A1 and the closure section B2, so that they are brought closer to each other, thereby realizing the function of rapid closure.

[0023] like Figure 1-5 As shown, a number of evenly distributed reinforcing ribs 14 are fixedly connected between the fixed wall 13 and its lower closure section A1 or closure section B2. The reinforcing ribs 14 improve the overall integrity and stability during closure.

[0024] like Figure 1-5 As shown, multiple limiting guide frames 8 are installed on both the closure section A1 and the closure section B2. The limiting guide frames 8 are located at the corners of the steel strands 7 and serve to guide the steel strands 7.

[0025] like Figure 1-5 As shown, the limiting guide frame 8 includes a mounting column 801 fixedly connected to the closure section A1 or the closure section B2. A rotating ring 802 is fixedly connected to the top of the mounting column 801. Limiting plates 803 are fixedly connected to both ends of the rotating ring 802. The mounting column 801 is fixedly installed to provide installation space for the rotating ring 802. It should be noted that the limiting guide frames 8 of the closure section A1 and the closure section B2 are symmetrically distributed to improve the tensile stability. By setting the limiting plates 803, the steel strand 7 is limited to prevent it from being thrown out when the steel strand 7 is pulled, thus reducing safety hazards.

[0026] like Figure 1-5 As shown, a fixing plate 10 is provided at the rear end of the core cylinder 9. The fixing plate 10 is fixedly connected to the core cylinder 9 and the first connecting block 4 by steel pins. The fixing plate 10 serves to connect the fixing wall 13 and the core cylinder 9.

[0027] Working principle: During installation, the fixed wall 13 is a single block, which is then fixed to the closure section by means of reinforcing ribs 14 and fixing bolts. Before installation, the core cylinder 9 needs to be installed in the fixed wall 13 through the fixing plate 10, and the first connecting block 4 and the second connecting block 5 are installed on the end faces of the core cylinder 9 on both sides respectively. Then, the laser emitter 11 on the second connecting block 5 can emit a laser vertical line. With the positioning receiving point 12 on the first connecting block 4, when the two laser vertical lines are located in the two positioning receiving points 12 respectively, it can be determined that the first connecting block 4 and the second connecting block 5 are on the same axis, thereby determining the installation position of the fixed walls 13 on both sides. Finally, the steel strand 7 is installed, and the limiting guide frame 8 guides the two ends of the steel strand 7 so that both ends of the steel strand 7 are installed at the pulling end of the cable puller 6. Then, the cable puller 6 pulls the two ends of the steel strand 7 simultaneously, and with the core cylinder 9 and the fixed wall 13, the tension is transmitted to the closure section A1 and the closure section B2, so that they are brought closer to each other, thereby achieving the function of rapid closure.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rapid closure device for a cable-stayed bridge, comprising a closure segment A (1) and a closure segment B (2), characterized in that, The system includes fixed walls (13) that are fixedly installed on the closure sections A (1) and B (2), with core tubes (9) embedded in both ends of the fixed walls (13). An installation platform (3) is provided between the closure sections A (1) and B (2), and a cable puller (6) is installed on the installation platform (3). Steel strands (7) are threaded between the core tubes (9), and both ends of the steel strands (7) are installed at the pull ends of the cable puller (6). A first connecting block (4) and a second connecting block (5) are fixedly connected to the end faces of the core tubes (9) on both sides, and two symmetrically distributed laser emitters (11) are fixedly installed on the second connecting block (5). A positioning receiving point (12) is provided at the installation position of the first connecting block (4) corresponding to the laser emitter (11).

2. The rapid closure device for a cable-stayed bridge according to claim 1, characterized in that: The fixed wall (13) is fixedly connected to its lower closure section A (1) or closure section B (2) by a plurality of evenly distributed reinforcing ribs (14).

3. The rapid closure device for a cable-stayed bridge according to claim 1, characterized in that: Multiple limiting guide frames (8) are provided on both the closure section A (1) and the closure section B (2), and the limiting guide frames (8) are located at the corners of the steel strands (7).

4. The rapid closure device for a cable-stayed bridge according to claim 3, characterized in that: The limiting guide frame (8) includes a mounting column (801) fixedly connected to the closure section A (1) or the closure section B (2). A rotating ring (802) is fixedly connected to the top of the mounting column (801), and limiting plates (803) are fixedly connected to both ends of the rotating ring (802).

5. The rapid closure device for a cable-stayed bridge according to claim 1, characterized in that: The core cylinder (9) is provided with a fixing plate (10) at its rear end. The fixing plate (10) is fixedly connected to the core cylinder (9) and the first connecting block (4) by steel pins.

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