Steel bridge anchor pulling plate positioning device

Abstract

The utility model relates to the technical field of bridge engineering construction, in particular to a steel bridge anchor pulling plate positioning device which comprises a rotating rod, a sleeve is sleeved on the upper middle section of the rotating rod, external threads are carved on the surface of the rotating rod and located in the area below the sleeve, and internal thread sliding sleeves are rotatably connected to the upper section and the lower section of the rotating rod through threads. Three sets of hinge seats are fixedly arranged on the annular face of the sleeve and the annular face of the internal thread sliding sleeve at equal angles, the hinge seats on the sleeve are connected with first fixing arms through fixing pins, the hinge seats on the internal thread sliding sleeve are connected with second fixing arms through fixing pins, and the outer ends of the first fixing arms and the outer ends of the second fixing arms are connected with hinge heads through fixing pins. The outer side of the hinge joint is connected with a fixing chuck through a fixing pin. The positioning device is used for directly positioning the axis of the anchor pipe of the anchor pulling plate, accumulated errors caused by indirect positioning are reduced, the positioning precision is improved, meanwhile, the adjusting range of the fixing arm in the circumferential direction is large, and the positioning device is suitable for anchor pipes of anchor pulling plates of various diameter specifications.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering construction technology, and more specifically, to a positioning device for anchor plates of steel bridges. Background Technology

[0002] In bridge engineering, steel bridges are increasingly used. When fixing cables in cable-stayed or suspension bridges, anchor plates need to be welded onto the bridge. Because the anchor pipes of the anchor plates have multiple spatial angles, it is difficult to position them along their axes. Currently, there are no specialized auxiliary devices, and the installation of the anchor plates mainly relies on measuring the relative positions of multiple points on the anchor plates with respect to the steel bridge.

[0003] The current construction methods have the following drawbacks:

[0004] 1. The axis of the anchor pipe cannot be directly determined, making precise positioning impossible;

[0005] 2. Indirect positioning is subject to numerous interfering factors, resulting in large cumulative errors and making positioning difficult.

[0006] 3. The construction process is complex and inefficient;

[0007] Therefore, in order to address the problems existing in the positioning of bridge anchor plates, improve positioning accuracy and construction efficiency, shorten the construction period, and reduce the input of manpower and materials, this utility model proposes a steel bridge anchor plate positioning device. Utility Model Content

[0008] In view of the shortcomings of the existing ones, the present invention aims to provide a positioning device for anchor plates of steel bridges, so as to improve positioning accuracy and construction efficiency, shorten the construction period, and reduce the input of manpower and material resources.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A positioning device for anchor plates of steel bridges includes a sleeve and a rotatable and adjustable rotating rod. The sleeve is fitted onto the middle section of the rotating rod, and the upper end of the sleeve is rotatably connected to the rotating rod via a fixing ring. A detachable observation prism assembly is installed on the upper end of the rotating rod. External threads are engraved on the surface of the rotating rod below the sleeve. Internal threaded sleeves are rotatably connected to the upper and lower sections of the rotating rod via threads. Three sets of hinge seats are fixed at equal angles on the sleeve and the inner threaded sleeve ring surfaces. A first fixed arm is connected to the hinge seat on the sleeve via a fixing pin, and a second fixed arm is connected to the hinge seat on the inner threaded sleeve via a fixing pin. The outer ends of the first and second fixed arms are connected to hinge joints via fixing pins, and a fixing clip is connected to the outer side of the hinge joint via a fixing pin.

[0011] Furthermore, the fixing head has a columnar structure and its surface is coated with a layer of adhesive.

[0012] Furthermore, a boss is fixedly provided at the upper end of the sleeve, and a groove adapted to the boss is provided on the inner wall of the fixing ring. The sleeve is inserted into the groove through the boss and rotatedly connected thereto. The fixing ring is fixedly connected to the rotating rod by screws. A limiting baffle is fixedly provided on the rotating part of the bottom of the sleeve, and the diameter of the limiting baffle is the same as the diameter of the sleeve.

[0013] Furthermore, the observation prism assembly consists of two sets of prisms, which are fixedly connected by a connecting rod. The bottom of the observation prism assembly is detachably connected to the threaded countersunk hole at the upper end of the rotating rod via a connecting screw.

[0014] Furthermore, the surface of the rotating rod is engraved with anti-slip texture.

[0015] Furthermore, the length of the externally threaded section on the rotating rod is greater than the total length when the first fixed arm and the second fixed arm are aligned.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model can be used for the direct positioning of the anchor plate and anchor pipe axis, reducing the cumulative error caused by indirect positioning and improving positioning accuracy.

[0018] 2. The first fixed arm and the second fixed arm in this utility model have a large adjustment range along the circumference, which can adapt to anchor plates and anchor pipes of various diameters, thus improving the versatility of the device.

[0019] 3. This utility model has a simple structure, is convenient to use, and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a top view of the present invention.

[0022] Figure 3 This is a schematic diagram of the observation prism assembly in this utility model.

[0023] Figure 4 This is a partial structural schematic diagram of the present invention.

[0024] Figure 5 This is a partial sectional view of the present invention.

[0025] Figure 6 This is a schematic diagram of the usage state of this utility model.

[0026] In the diagram: 1. Observation prism assembly; 2. Rotating rod; 3. Sleeve; 4. First fixed arm; 5. Fixed clamp; 6. Second fixed arm; 7. Connecting screw; 8. Threaded countersunk hole; 9. Anti-slip texture; 10. Fixed retaining ring; 11. Hinge seat; 12. Hinge joint; 13. External thread; 14. Internal threaded sleeve; 15. Screw; 16. Boss; 17. Slot; 18. Limiting stop. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] Example:

[0029] like Figures 1 to 6 As shown, a positioning device for a steel bridge anchor plate includes a sleeve 3 and a rotatable and adjustable rotating rod 2. The sleeve 3 is fitted onto the upper middle section of the rotating rod 2. The upper end of the sleeve 3 is rotatably connected to the rotating rod 2 via a fixing ring 10. A detachable observation prism group 1 is installed on the upper end of the rotating rod 2 to determine the axis of the rotating rod 2 and thus the axis of the anchor plate. An external thread 13 is engraved on the surface of the rotating rod 2 below the sleeve 3. An internal threaded sliding sleeve 14 is rotatably connected to the upper and lower sections of the rotating rod 2 via threads. When the rotating rod 2 rotates, it can drive the internal threaded sliding sleeve 14 to move up and down along the rotating rod 2. Three sets of hinge seats 11 are fixed at equal angles on the annular surfaces of the sleeve 3 and the internal threaded sliding sleeve 14. A first fixed arm 4 is connected to the hinge seat 11 on the sleeve 3 via a fixing pin. A second fixed arm 6 is connected to the hinge seat 11 on the threaded sleeve 14 by a fixed pin. The outer ends of the first fixed arm 4 and the second fixed arm 6 are both connected to the hinge joint 12 by fixed pins. A fixed clamp 5 is connected to the outside of the hinge joint 12 by a fixed pin. The hinge between the first fixed arm 4 and the second fixed arm 6 can move horizontally following the up and down sliding of the internal threaded sleeve 14, thereby driving the fixed clamp 5 to move horizontally. The device can be fixed in the anchor pipe of the anchor plate by the fixed clamp 5, and it can adapt to anchor pipes of different diameters. This design solves the problems of the existing anchor plate axis positioning method, which cannot directly determine the axis of the anchor pipe and achieve accurate positioning, as well as indirect positioning, which has many interference factors, large cumulative errors, and difficult positioning. In addition, the construction operation is complicated and inefficient.

[0030] In this embodiment, the fixing clip 5 has a columnar structure. This design allows the fixing clip 5 to provide a stable support point when it contacts the inner wall of the anchor tube on the anchor plate, ensuring the stability of the connection with the inner wall of the anchor tube. In addition, its surface is covered with a layer of rubber, which increases the friction between the clip and the anchor plate, making the clip more stable during the positioning process and less prone to slipping or loosening. At the same time, the rubber layer can prevent the fixing clip 5 from directly contacting the metal surface of the inner wall of the anchor tube on the anchor plate, reducing friction and wear, thereby protecting the quality of the inner wall of the anchor tube.

[0031] In this embodiment, a boss 16 is fixedly provided on the upper end of the sleeve 3. A groove 17 adapted to the boss 16 is provided on the inner wall of the retaining ring 10. The sleeve 3 is inserted into the groove 17 through the boss 16 and rotatedly connected thereto. The retaining ring 10 is fixedly connected to the rotating rod 2 by screws 15. A limiting baffle 18 is fixedly provided on the bottom of the sleeve 3. The diameter of the limiting baffle 18 is the same as the diameter of the sleeve 3. This design limits the rotating rod 2 by the retaining ring 10 in conjunction with the boss 16 on the sleeve 3, ensuring that the rotating rod 2 can only rotate around the sleeve 3 and will not produce relative movement in the axial direction. At the same time, the limiting baffle 18 can limit and fix the sleeve 3 from the bottom, preventing the sleeve 3 from moving excessively or falling off during the rotation of the rotating rod 2, and ensuring the stability of the connection between the sleeve 3 and the rotating rod 2.

[0032] In this embodiment, the observation prism assembly 1 consists of two sets of prisms, which are fixedly connected by a connecting rod. The bottom of the observation prism assembly 1 is detachably connected to the threaded countersunk hole 8 at the upper end of the rotating rod 2 via a connecting screw 7. The two sets of prisms are arranged on a straight line for precise measurement and positioning to determine the axis of the rotating rod 2. The threaded connection of the connecting screw 7 also allows the observation prism assembly 1 to be easily installed onto the rotating rod 2 and to be disassembled and replaced as needed.

[0033] In this embodiment, the surface of the rotating rod 2 is engraved with anti-slip texture 9. The anti-slip texture 9 significantly improves the friction of the rotating surface, making it more stable for the operator to hold or operate the rotating part, effectively preventing the slippage of the hand and improving the safety of operation.

[0034] In this embodiment, the length of the external thread 13 segment on the rotating rod 2 is greater than the total length of the first fixed arm 4 and the second fixed arm 6 when they are straight. This design ensures that when the first fixed arm 4 and the second fixed arm 6 are fully extended, the external thread 13 segment still has enough slack to prevent the internal threaded sleeve 14 from falling off the rotating rod 2.

[0035] The working principle of this steel bridge anchor plate positioning device:

[0036] Before using the device, retract the first fixing arm 4 and the second fixing arm 6 inward and adjust them to a state where they can be inserted into the anchor tube of the anchor plate.

[0037] When using the device, place the first fixing arm 4, the second fixing arm 6, and the fixing clamp 5 into the anchor tube of the anchor plate. Secure the sleeve by hand or other tools, and rotate the rotating rod 2 clockwise. The rotation of the rotating rod 2 causes the rotating nut to move upward along the rotating rod 2, which in turn causes the second fixing arm 6 to move upward. At the same time, the second fixing arm 6 rotates around the hinge seat 11 on the internal threaded sliding sleeve 14, causing the first fixing arm 4 and the second fixing arm 6 to move outward in a circumferential direction, which in turn causes the fixing clamp to move outward and clamp onto the inner wall of the anchor tube of the anchor plate. When all three sets of fixing clamps 5 are clamped onto the inner wall of the anchor tube, the axis of the rotating rod 2 is the axis of the anchor tube. The position of the anchor tube axis can be obtained by observing the observation prism group 1.

[0038] When dismantling the device, hold the sleeve in place by hand or other tools, rotate the rotating rod 2 counterclockwise, causing the internal threaded sleeve 14 to move downward along the rotating rod 2, which in turn causes the second fixed arm 6 to move downward. At the same time, the second fixed arm 6 rotates around the junction on the internal threaded sleeve 14, causing the first fixed arm 4 and the second fixed arm 6 to move inward in the circumferential direction, which in turn causes the fixed clamp 5 to move inward and separate from the inner wall of the anchor pipe. Then, the positioning device can be pulled out.

[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A positioning device for anchor plates of steel bridges, characterized in that: Includes a sleeve (3) and a rotatable adjustable rotating rod (2). The sleeve (3) is fitted onto the upper middle section of the rotating rod (2). The upper end of the sleeve (3) is rotatably connected to the rotating rod (2) via a retaining ring (10). A detachable observation prism assembly (1) is installed on the upper end of the rotating rod (2). The area of ​​the rotating rod (2) below the sleeve (3) is engraved with external threads (13). The upper and lower sections of the rotating rod (2) are rotatably connected to internally threaded sliding sleeves (14) via threads. 3) Three sets of hinge seats (11) are fixed at equal angles on the annular surface of the internal threaded sleeve (14). The hinge seat (11) on the sleeve (3) is connected to the first fixed arm (4) by a fixing pin. The hinge seat (11) on the internal threaded sleeve (14) is connected to the second fixed arm (6) by a fixing pin. The outer ends of the first fixed arm (4) and the second fixed arm (6) are connected to the hinge joint (12) by a fixing pin. The outer side of the hinge joint (12) is connected to the fixing clip (5) by a fixing pin.

2. The steel bridge anchor plate positioning device according to claim 1, characterized in that: The fixing head (5) is a columnar structure, and its surface is coated with a layer of adhesive.

3. The steel bridge anchor plate positioning device according to claim 1, characterized in that: A boss (16) is fixedly provided on the upper end of the sleeve (3). A groove (17) adapted to the boss (16) is provided on the inner wall of the fixing ring (10). The sleeve (3) is inserted into the groove (17) through the boss (16) and rotated to be connected with it. The fixing ring (10) is fixedly connected to the rotating rod (2) by screws (15). A limiting baffle (18) is fixedly provided on the rotating part of the bottom of the sleeve (3). The diameter of the limiting baffle (18) is the same as the diameter of the sleeve (3).

4. The steel bridge anchor plate positioning device according to claim 1, characterized in that: The observation prism group (1) consists of two sets of prisms, which are fixedly connected by a connecting rod. The bottom of the observation prism group (1) is detachably connected to the threaded countersunk hole (8) at the upper end of the rotating rod (2) by a connecting screw (7).

5. The steel bridge anchor plate positioning device according to claim 1, characterized in that: The surface of the rotating rod (2) is engraved with anti-slip texture (9).

6. The steel bridge anchor plate positioning device according to claim 1, characterized in that: The length of the external thread (13) section on the rotating rod (2) is greater than the total length of the first fixed arm (4) and the second fixed arm (6) when they are straight.

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