T-type rigid frame bridge swivel traction cable pre-tightening positioning device

Abstract

The utility model relates to bridge engineering technical field, concretely is a kind of T type rigid frame bridge swivel traction cable pre-tightening positioning device, it includes: mounting plate;Winding component, including guide module, rotating plate, winding column, clamping plate and adjusting module, guide module is fixedly connected in one side of mounting plate, rotating plate is rotatably connected with mounting plate, winding column is fixedly connected with rotating plate, clamping plate is sleeved in the outside of winding column, adjusting module is fixedly connected with clamping plate;Pre-tightening component, including ratchet wheel and pawl, ratchet wheel is fixedly connected with rotating plate, pawl is slidably connected with mounting plate, the tooth of pawl side and ratchet wheel contact, the traction cable is guided to go to by guide structure, cooperate winding part and realize the stable winding pre-tightening of traction cable, different diameter's traction cable and different winding number are accurately adapted by adjusting mechanism, ensure that traction cable does not deviate, does not move in pre-tightening process, realizes reliable limit fixing.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically a pre-tensioning and positioning device for the traction cable of a T-shaped rigid frame bridge. Background Technology

[0002] With the advancement of transportation infrastructure construction, T-shaped rigid frame bridges, due to their advantages such as strong spanning capacity and clear force distribution, are widely used in engineering scenarios spanning rivers, valleys, and existing transportation routes. Rotation construction technology, as a key construction method for such bridges, allows the main body of the bridge to be prefabricated in a safe area and then rotated around its axis to a predetermined position, significantly reducing interference with the surrounding environment and existing traffic, making it a preferred solution under complex terrain and traffic conditions. As the core load-bearing component in rotation construction, the reliability of the pre-tensioning and positioning of the traction cable directly determines the stability and construction safety of the rotation process; therefore, a dedicated pre-tensioning and positioning device is a crucial requirement for improving construction quality.

[0003] A search revealed existing technology (application number: CN206768628U), which describes "a positioning device for a bridge rotation traction cable". This utility model uses a fixing device composed of specific brackets arranged circumferentially on the upper turntable journal to form a groove adapted to the traction cable, thereby limiting the traction cable and achieving positioning.

[0004] However, this device only provides basic positioning of the traction cable through a fixed groove, and lacks traction cable pre-tensioning function, adjustment structure to adapt to traction cables of different diameters, and anti-loosening mechanism. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pre-tensioning and positioning device for the traction cable of a T-shaped rigid frame bridge rotation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pre-tensioning positioning device for the rotating traction cable of a T-shaped rigid frame bridge, comprising: a mounting plate; a winding assembly, comprising a guide module, a rotating plate, a winding column, a clamping plate, and an adjusting module, wherein the guide module is fixedly connected to one side of the mounting plate, the rotating plate is rotatably connected to the mounting plate, the winding column is fixedly connected to the rotating plate, the clamping plate is sleeved on the outside of the winding column, and the adjusting module is fixedly connected to the clamping plate; and a pre-tensioning assembly, comprising a ratchet and a pawl, wherein the ratchet is fixedly connected to the rotating plate, the pawl is slidably connected to the mounting plate, and one side of the pawl contacts the teeth of the ratchet.

[0007] As a further description of the above technical solution:

[0008] A fixing sleeve is fixedly connected to the mounting plate, and a connecting post is threaded inside the fixing sleeve.

[0009] As a further description of the above technical solution:

[0010] A guide plate is welded above the connecting column, and a guide hole is provided inside the guide plate.

[0011] As a further description of the above technical solution:

[0012] Two clamping plates are provided, which are distributed along the axial direction of the winding column. A traction cable is wound between the clamping plates. A connecting column is welded to the rotating plate, and the top of the connecting column is welded to the clamping plate below.

[0013] As a further description of the above technical solution:

[0014] A fixing plate is welded to the side wall of the clamping plate, and an adjusting plate is slidably connected to the fixing plate. The adjusting plate is provided with a positioning hole, and a locking pin is threaded into the positioning hole. The locking pin is slidably connected to the fixing plate.

[0015] As a further description of the above technical solution:

[0016] A telescopic plate is provided between the adjusting plates. The two ends of the telescopic plate are welded to the upper and lower adjusting plates respectively. A threaded rod is provided inside the telescopic plate. The threaded rod is rotatably connected to the fixed end of the telescopic plate and threadedly connected to the movable end of the telescopic plate.

[0017] As a further description of the above technical solution:

[0018] A torsion spring is fitted under the pawl, and a spring is welded to the bottom of the pawl. Both ends of the torsion spring and the spring are fixedly connected to the mounting plate and the pawl.

[0019] This utility model has the following beneficial effects:

[0020] Firstly, the guide structure guides the direction of the traction cable, and the winding component achieves stable winding and pre-tightening of the traction cable. The adjustment mechanism precisely adapts to traction cables of different diameters and different winding turns, ensuring that the traction cable does not deviate or move during the pre-tightening process, thus achieving reliable limiting and fixing.

[0021] Secondly, the ratchet and elastic components work together to form an anti-reverse mechanism, which prevents the traction cable from loosening under normal conditions and ensures the stability of the pre-tensioning positioning. When the traction cable needs to be disassembled, the anti-reverse restriction can be easily released, allowing the traction cable to be quickly removed, thus balancing the reliability of pre-tensioning and the ease of operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the guide module of this utility model;

[0024] Figure 3This is a partial structural schematic diagram of the winding assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the telescopic column and threaded rod of this utility model;

[0026] Figure 5 This is a schematic diagram of the pre-tightening component of this utility model.

[0027] Legend:

[0028] 1. Mounting plate; 2. Winding assembly; 21. Guide module; 211. Fixing sleeve; 212. Connecting post; 213. Guide plate; 22. Rotating plate; 23. Winding post; 24. Connecting post; 25. Clamping plate; 26. Adjustment module; 261. Fixing plate; 262. Adjusting plate; 263. Locking pin; 264. Telescopic plate; 265. Threaded rod; 3. Pre-tightening assembly; 31. Ratchet; 32. Pawl; 33. Torsion spring; 34. Spring. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1:

[0033] like Figures 1 to 5 As shown, this embodiment provides a T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device, including: a mounting plate 1; a winding assembly 2, including a guide module 21, a rotating plate 22, a winding column 23, a clamping plate 25, and an adjustment module 26. The guide module 21 is fixedly connected to one side of the mounting plate 1, the rotating plate 22 is rotatably connected to the mounting plate 1, the winding column 23 is fixedly connected to the rotating plate 22, the clamping plate 25 is sleeved on the outside of the winding column 23, and the adjustment module 26 is fixedly connected to the clamping plate 25; and a pre-tensioning assembly 3, including a ratchet 31 and a pawl 32. The ratchet 31 is fixedly connected to the rotating plate 22, the pawl 32 is slidably connected to the mounting plate 1, and one side of the pawl 32 contacts the teeth of the ratchet 31.

[0034] In addition, bolt holes are provided on mounting plate 1.

[0035] In this embodiment, the mounting plate 1, the winding assembly 2, and the pretensioning assembly 3 constitute a pretensioning and positioning device for the traction cable of a T-shaped rigid frame bridge according to this application.

[0036] Understandable Figure 1 The diagram only schematically illustrates some of the components of the traction cable pretensioning and positioning device; the actual shape, size, position, and construction of these components are not subject to change. Figure 1 Due to limitations, the traction cable pretensioning positioning device can also include, compared to... Figure 1 More or fewer parts.

[0037] Example 2:

[0038] Specifically, a fixing sleeve 211 is fixedly connected to the mounting plate 1, and a connecting post 24 is threaded inside the fixing sleeve 211.

[0039] Specifically, a guide plate 213 is welded above the connecting column 24, and a guide hole is provided inside the guide plate 213.

[0040] Specifically, there are two clamping plates 25, which are distributed along the axial direction of the winding column 23. A traction cable is wound between the clamping plates 25. A connecting column 24 is welded on the rotating plate 22, and the top of the connecting column 24 is welded to the clamping plate 25 below.

[0041] Specifically, a fixing plate 261 is welded to the side wall of the clamping plate 25, and an adjusting plate 262 is slidably connected to the fixing plate 261. The adjusting plate 262 is provided with a positioning hole, and a locking pin 263 is threadedly connected to the positioning hole. The locking pin 263 is slidably connected to the fixing plate 261.

[0042] Specifically, a telescopic plate 264 is provided between the adjusting plates 262. The two ends of the telescopic plate 264 are welded to the adjusting plates 262 on the upper and lower sides respectively. A threaded rod 265 is provided inside the telescopic plate 264. The threaded rod 265 is rotatably connected to the fixed end of the telescopic plate 264, and the threaded rod 265 is threadedly connected to the movable end of the telescopic plate 264.

[0043] In this embodiment, rotating the connecting column 24 allows it to rise and fall within the fixed sleeve 211 using a threaded connection, adjusting the height of the top of the connecting column 24. This adjustment provides a suitable height for the subsequent installation of the guide plate 213, meeting different guiding requirements. The traction cable passes through the guide hole, which limits and guides the cable, ensuring it follows a fixed path to the winding column 23, preventing deviation and ensuring accuracy during winding. This also reduces friction between the cable and other components. The lower clamping plate 25 is fixed to the rotating plate 22 via the connecting column 24 and rotates synchronously with the rotating plate 22. The space between the two clamping plates 25 restricts the vertical movement of the traction cable, ensuring it is stably wound around the winding column 23, further fixing the cable position and preventing it from slipping during winding. The downward movement improves the winding stability. The sliding adjustment plate 262 changes its position on the fixed plate 261, adjusting the relative distance between the two adjustment plates 262. After aligning with the positioning hole, the locking pin 263 is screwed in to fix the position of the adjustment plate 262, thereby adjusting the limiting range of the clamping plate 25 on the traction cable. By adjusting the position of the adjustment plate 262, it can adapt to traction cables with different winding turns. The locking pin 263 fixes the adjustment plate 262 to ensure stable limiting effect. Rotating the threaded rod 265, the threaded engagement pushes the movable end of the telescopic plate 264 to extend and retract along the fixed end, driving the upper and lower adjustment plates 262 to move synchronously, thereby changing the distance between the two clamping plates 25. The distance between the two clamping plates 25 is precisely adjusted to adapt to traction cables of different diameters, ensuring the limiting effect of the clamping plate 25 on the traction cable.

[0044] Example 3:

[0045] Specifically, a torsion spring 33 is fitted under the pawl 32, and a spring 34 is welded to the bottom of the pawl 32. Both ends of the torsion spring 33 and the spring 34 are fixedly connected to the mounting plate 1 and the pawl 32.

[0046] In this embodiment, under normal conditions, the elastic force of the torsion spring 33 and the spring 34 keeps the left end of the pawl 32 engaged with the teeth of the ratchet 31, preventing the ratchet 31 from rotating in the opposite direction. Pulling the right side of the pawl 32 compresses the spring 34 and torsional spring 33, causing the left end of the pawl 32 to separate from the teeth of the ratchet 31, releasing the anti-reverse restriction. Under normal conditions, reliable anti-reverse is achieved, preventing the traction cable from loosening. When it is necessary to remove the traction cable, the anti-reverse restriction can be easily released, making it easy to remove the traction cable by reversing the winding post 23.

[0047] In actual use, the user first fixes the mounting plate 1 in a suitable position with bolts, then rotates the threaded rod 265 to adjust the distance between the two clamping plates 25 according to the diameter of the traction cable, then rotates the guide plate 213 to make the hole of the guide plate 213 flush with the gap between the two clamping plates 25, then passes the traction cable through the guide plate 213 and winds it around the winding post 23. Rotating the winding post 23 will wind the traction cable around the winding post 23. By moving the locking pin 263, the number of turns of the winding traction cable can be adjusted. If it is necessary to remove the traction cable, pull the torsion spring 33 to reverse the winding post 23 to remove the traction cable.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-tensioning and positioning device for the traction cable of a T-shaped rigid frame bridge, characterized in that: include: Mounting plate (1); The winding assembly (2) includes a guide module (21), a rotating plate (22), a winding column (23), a clamping plate (25), and an adjustment module (26). The guide module (21) is fixedly connected to one side of the mounting plate (1), the rotating plate (22) is rotatably connected to the mounting plate (1), the winding column (23) is fixedly connected to the rotating plate (22), the clamping plate (25) is sleeved on the outside of the winding column (23), and the adjustment module (26) is fixedly connected to the clamping plate (25). The pre-tightening assembly (3) includes a ratchet (31) and a pawl (32). The ratchet (31) is fixedly connected to the rotating plate (22), and the pawl (32) is slidably connected to the mounting plate (1). One side of the pawl (32) is in contact with the teeth of the ratchet (31).

2. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 1, characterized in that: A fixing sleeve (211) is fixedly connected to the mounting plate (1), and a connecting post (24) is threaded inside the fixing sleeve (211).

3. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 2, characterized in that: A guide plate (213) is welded above the connecting column (24), and a guide hole is provided inside the guide plate (213).

4. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 1, characterized in that: Two clamping plates (25) are provided. The clamping plates (25) are distributed along the axial direction of the winding column (23). A traction cable is wound between the clamping plates (25). A connecting column (24) is welded on the rotating plate (22). The top of the connecting column (24) is welded to the clamping plate (25) below.

5. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 1, characterized in that: A fixing plate (261) is welded to the side wall of the clamping plate (25). An adjusting plate (262) is slidably connected to the fixing plate (261). A positioning hole is provided on the adjusting plate (262). A locking pin (263) is threadedly connected to the positioning hole. The locking pin (263) is slidably connected to the fixing plate (261).

6. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 5, characterized in that: A telescopic plate (264) is provided between the adjusting plates (262). The two ends of the telescopic plate (264) are welded to the adjusting plates (262) on the upper and lower sides respectively. A threaded rod (265) is provided inside the telescopic plate (264). The threaded rod (265) is rotatably connected to the fixed end of the telescopic plate (264), and the threaded rod (265) is threadedly connected to the movable end of the telescopic plate (264).

7. The T-shaped rigid frame bridge rotation traction cable pre-tensioning positioning device according to claim 1, characterized in that: A torsion spring (33) is fitted under the pawl (32), and a spring (34) is welded to the bottom of the pawl (32). Both ends of the torsion spring (33) and the spring (34) are fixedly connected to the mounting plate (1) and the pawl (32).

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