Positioning structure for embedded sleeve of cable-stayed bridge

Abstract

The utility model relates to the technical field of bridge construction, in particular to a cable-stayed bridge embedded sleeve positioning structure which comprises a base and an embedded pipe, a mounting groove is formed in the upper surface of the base, and one end of the embedded pipe is rotationally connected into the mounting groove; an adjusting arc plate is arranged in the mounting groove, and an arc-shaped sliding groove opening is formed in the middle of the adjusting arc plate. The embedded pipe is arranged between the two adjusting arc plates; side plates are arranged on the two sides of the embedded pipe, and inserting rollers used for being clamped into the arc-shaped sliding groove openings in a matched mode are arranged on the surfaces of the side plates. The embedded pipe is provided with an abutting assembly, the abutting assembly comprises a top plate and a screw rod, and the screw rod is driven to enable the top plate to be close to the side end face of the adjusting arc plate to abut against and be fixed. According to the utility model, the pre-embedded sleeve can be adjusted more conveniently according to the installation position, and the inclination angle is accurately adjusted while the pre-embedded sleeve is not easy to loosen.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a positioning structure for a pre-embedded sleeve of a cable-stayed bridge. Background Technology

[0002] Pre-embedded sleeves for cable-stayed bridges are sleeves pre-installed in the piers or beams above the piers during the construction of cable-stayed bridges to fix the stay cables. Pre-embedded sleeves are usually set at the joints between the main beams and the towers of the bridge. Through these sleeves, the stay cables can be inserted into the interior of the bridge structure to ensure a firm connection between the stay cables and the bridge structure.

[0003] In existing cable-stayed bridges, the inclination angle of the stay cables varies depending on the location of the embedded sleeves during construction. This necessitates manual adjustment of the sleeve angle to achieve the design requirements. Currently, most methods rely on slings and ropes for adjustment, which is time-consuming, labor-intensive, inefficient, and inconvenient for workers. Therefore, designing a convenient, accurate, and stable positioning structure for the embedded sleeves of cable-stayed bridges is essential. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning structure for the pre-embedded sleeve of a cable-stayed bridge that is easier to adjust and can accurately adjust the tilt angle without easily becoming loose.

[0005] This utility model is achieved through the following technical solution: a positioning structure for a pre-embedded sleeve of a cable-stayed bridge, including a base and a pre-embedded tube. The upper surface of the base is provided with an installation groove, and one end of the pre-embedded tube is rotatably connected to the installation groove. An adjusting arc plate is provided in the installation groove, and an arc-shaped sliding groove is provided in the middle of the adjusting arc plate. The pre-embedded tube is located between two adjusting arc plates. Side plates are provided on both sides of the pre-embedded tube, and the surface of the side plates is provided with insert rollers for fitting into the arc-shaped sliding groove. A clamping component is provided on the pre-embedded tube, and the clamping component includes a top plate and a screw. By driving the screw, the top plate is brought close to the side end face of the adjusting arc plate and clamped and fixed.

[0006] Furthermore, one end of the screw is threaded to the top of the pre-embedded pipe, and a sliding ring is provided on the screw; a connecting plate is hinged between the sliding ring and the top plate, and a pressure plate is also provided on the screw. By rotating the screw, the pressure plate is moved down, and the pressure plate presses down on the sliding ring, and the two top plates abut against the adjusting arc plate.

[0007] Furthermore, a braking grinding plate is provided on the side of the adjusting arc plate facing the top plate.

[0008] Furthermore, the side of the adjusting arc plate is provided with engaging locking teeth arranged along its length.

[0009] Furthermore, a torque handle is provided at the top of the screw.

[0010] Furthermore, the mounting groove is filled with a shaped filler material.

[0011] Furthermore, the shaping filler material is concrete.

[0012] Furthermore, the mounting groove is a square recessed groove structure.

[0013] Furthermore, the base is provided with mounting holes at both the front and rear ends.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: This utility model adjusts the tilt angle of the pre-embedded pipe along the arc-shaped sliding groove, and in conjunction with the scale on the adjusting arc plate, it achieves high positioning accuracy. After the top plate is pressed down by the screw to lock the side end face of the adjusting arc plate for positioning, concrete is poured in to shape it. Batch operation is simple and convenient, and while ensuring the positioning effect, it also has high operation efficiency. Attached Figure Description

[0015] Figure 1 This is a top view of the pre-embedded sleeve positioning structure for cable-stayed bridges in this utility model;

[0016] Figure 2 for Figure 1 A cross-sectional view of point AA in the diagram;

[0017] Figure 3 This is a schematic diagram of the pre-embedded sleeve positioning structure of the cable-stayed bridge in this utility model when it is loosened.

[0018] Figure 4 This is a schematic diagram of the pre-embedded sleeve positioning structure of the cable-stayed bridge in this utility model when it is tightened.

[0019] Reference numerals: 1-base, 11-mounting groove, 2-embedded pipe, 3-adjusting arc plate, 31-arc-shaped sliding groove, 32-meshing locking tooth, 33-brake grinding plate, 4-side plate, 41-insertion roller, 5-clamping assembly, 51-top plate, 52-screw, 53-slip ring, 54-connecting plate, 55-pressure plate, 56-torque handle, 6-mounting waist hole, 7-shaping filling material. Detailed Implementation

[0020] The following description, in conjunction with specific embodiments, provides further details. Figures 1-4As shown, this embodiment is a positioning structure for a pre-embedded sleeve of a cable-stayed bridge, including a base 1 and a pre-embedded pipe 2. An installation groove 11 is formed on the upper surface of the base 1, and one end of the pre-embedded pipe 2 is rotatably connected to the installation groove 11. An adjusting arc plate 3 is provided in the installation groove 11, and an arc-shaped sliding groove 31 is provided in the middle of the adjusting arc plate 3. The pre-embedded pipe 2 is positioned between two adjusting arc plates 3. Side plates 4 are provided on both sides of the pre-embedded pipe 2, and rollers 41 for fitting into the arc-shaped sliding groove 31 are provided on the surface of the side plates 4. A clamping assembly 5 is provided on the pre-embedded pipe 2, which includes a top plate 51 and a screw 52. The top plate 51 is brought closer together by driving the screw 52. The side end face of the adjusting arc plate 3 is pressed and fixed; specifically, the position of the pre-embedded sleeve is arranged according to the cable spacing of the cable-stayed bridge. The pre-embedded pipe 2 is rotated to adjust the tilt angle. The tail end of the pre-embedded pipe 2 rotates around the rotating shaft, while the front end of the pre-embedded pipe 2 moves along the arc-shaped sliding groove 31 of the adjusting arc plate 3 through the insertion roller 41. After the tilt angle is adjusted, one end of the cable is connected to the pipe opening of the pre-embedded pipe 2. The screw 52 is rotated to make the top plate 51 move and press against the adjusting arc plate 3 to fix the position of the pre-embedded pipe 2 and the side plate 4 at this time. In bridge construction, multiple pre-embedded sleeves need to be positioned. This angle adjustment operation is simple and convenient, with high operation efficiency and stable positioning.

[0021] like Figure 3 As shown, in some embodiments, one end of the screw 52 is threadedly connected to the top of the pre-embedded pipe 2. The screw 52 is provided with a sliding ring 53. A connecting plate 54 is hinged between the sliding ring 53 and the top plate 51. A pressure plate 55 is also provided on the screw 52. By rotating the screw 52, ​​the pressure plate 55 is moved down, and the pressure plate 55 presses down on the sliding ring 53. The two top plates 51 abut against the adjusting arc plate 3. Specifically, after the angle position of the pre-embedded pipe 2 is adjusted, the pressure plate 55 is moved down by rotating the screw 52, ​​and the sliding ring 53 is sleeved on the screw 52. When the screw 52 rotates, the sliding ring 53 does not rotate. The pressure plate 55 contacts the sliding ring 53 and causes the sliding ring 53 to move down, thereby rotating the hinge points at both ends of the connecting plate 54, thereby pushing the two top plates 51 to move in opposite directions to contact the adjusting arc plate 3 and prevent it from moving, thus fixing the angle position.

[0022] Alternatively, in order to improve the braking and tightening effect, a braking grinding plate 33 is provided on the side of the adjusting arc plate 3 facing the top plate 51. Both the end face of the adjusting arc plate 3 and the end face of the top plate 51 are provided with a rough friction surface of the braking grinding plate 33, which greatly improves the tightening and fixing effect.

[0023] Alternatively, in this embodiment, the side of the adjusting arc plate 3 is provided with engaging locking teeth 32 arranged along its length direction; specifically, a rack that cooperates with the engaging locking teeth 32 can be provided on one end face of the top plate 51. When the top plate 51 and the adjusting arc plate 3 are in tight contact, the rack and other protrusions can be inserted into the engaging locking teeth 32, resulting in better stability.

[0024] like Figure 3As shown, in order to facilitate the positioning and locking operation, a torque handle 56 is provided on the top of the screw 52. The pre-embedded pipe 2 can be moved and the angle adjusted by pulling the torque handle 56.

[0025] like Figure 2 As shown, in order to further fix the shape and position and avoid the swaying of the pre-embedded pipe 2 from affecting the cable, the installation groove 11 is filled with a shaping filler material 7. More preferably, the shaping filler material 7 is concrete. After the position and angle of the pre-embedded pipe 2 are adjusted, the concrete is poured into the installation groove 11 and solidifies.

[0026] Optionally, the mounting groove 11 is a square recessed groove structure, which has a large space to place the pre-embedded pipe 2 and the side plate 4, etc.

[0027] To increase the installation margin at the mounting position of base 1, such as Figure 1 As shown, mounting holes 6 are provided at both the front and rear ends of the base 1.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning structure for a pre-embedded sleeve of a cable-stayed bridge, comprising a base (1) and a pre-embedded pipe (2), characterized in that: The upper surface of the base (1) is provided with an installation groove (11), and one end of the pre-embedded pipe (2) is rotatably connected to the installation groove (11); The mounting groove (11) is provided with an adjusting arc plate (3), and the middle part of the adjusting arc plate (3) is provided with an arc-shaped sliding groove (31); The pre-embedded pipe (2) is located between the two adjusting arc plates (3); The pre-embedded pipe (2) is provided with side plates (4) on both sides, and the surface of the side plates (4) is provided with insert rollers (41) for fitting into the arc-shaped sliding groove (31); The pre-embedded pipe (2) is provided with a clamping component (5), which includes a top plate (51) and a screw (52). By driving the screw (52), the top plate (51) is brought close to the side end face of the adjusting arc plate (3) and clamped and fixed.

2. The pre-embedded sleeve positioning structure for cable-stayed bridges according to claim 1, characterized in that: One end of the screw (52) is threaded to the top of the pre-embedded pipe (2), and the screw (52) is provided with a sliding ring (53); A connecting plate (54) is hinged between the slip ring (53) and the top plate (51). A pressure plate (55) is also provided on the screw (52). By rotating the screw (52), the pressure plate (55) is driven to move down, and the pressure plate (55) presses down on the slip ring (53). The two top plates (51) abut against the adjusting arc plate (3).

3. The positioning structure for the pre-embedded sleeve of a cable-stayed bridge according to claim 2, characterized in that: The adjusting arc plate (3) and the top plate (51) are provided with a braking grinding plate (33) on the opposite side.

4. The positioning structure for the pre-embedded sleeve of a cable-stayed bridge according to claim 2, characterized in that: The side of the adjusting arc plate (3) is provided with engaging locking teeth (32) arranged along its length.

5. The positioning structure for the pre-embedded sleeve of a cable-stayed bridge according to claim 2, characterized in that: The screw (52) is provided with a torque handle (56) at its top.

6. The positioning structure for the pre-embedded sleeve of a cable-stayed bridge according to claim 1, characterized in that: The mounting groove (11) is filled with a shaping filler material (7).

7. The pre-embedded sleeve positioning structure for cable-stayed bridges according to claim 6, characterized in that: The shaping filler material (7) is concrete.

8. The positioning structure for the pre-embedded sleeve of a cable-stayed bridge according to claim 1, characterized in that: The mounting groove (11) is a square recessed groove structure.

9. The pre-embedded sleeve positioning structure for cable-stayed bridges according to claim 1, characterized in that: The base (1) is provided with mounting holes (6) at both the front and rear ends.

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