An auxiliary positioning device for assembling prefabricated sections of a bridge

Abstract

This utility model relates to the field of bridge assembly positioning technology, specifically disclosing an auxiliary positioning device for assembling precast bridge sections. The device includes a fixed frame, with a snap-fit ​​column rotatably mounted on the outer surface of one end of the fixed frame, and a laser instrument fixedly mounted on the outer surface of one end of the mounting pole. During assembly, the device simply requires inserting the fixed frame into the outer surfaces of both the fixed and movable ends of the precast beam and securing it. Then, the bolts can be loosened to adjust the height of the mounting poles on both sides, ensuring the laser instrument and the laser reflection observation plate are at the same height. The precast beam at the movable end can then be lifted by a machine, and the laser instrument activated. Accurate positioning is achieved by comparing the laser beam's illumination with the positioning marks on the laser reflection observation plate. This allows for accurate positioning of the precast beam during assembly without the need for measurement, reducing the complexity of the positioning process.

Description

Technical Field

[0001] This utility model relates to the field of bridge assembly and positioning technology, specifically an auxiliary positioning device for assembling precast bridge sections. Background Technology

[0002] With the development of bridge construction technology, prefabricated bridges have been widely used in the bridge construction field due to their advantages such as standardized component production, rapid and convenient on-site installation, and energy-saving and environmentally friendly construction. In the construction process of prefabricated bridges, the assembly accuracy of prefabricated sections is crucial, as it directly affects the overall structural safety and performance of the bridge. However, due to the large size and weight of prefabricated bridge components, traditional manual positioning methods are insufficient to achieve the required high-precision alignment. For example, when splicing prefabricated columns and cap beams of pile-column piers, workers need to manually confirm and measure data such as the spacing, angle, and height between prefabricated bridge sections. Since the bridge is suspended and constantly swaying during splicing, data collection is extremely difficult and unsuitable for use in the continuous hoisting of multiple cap beams in multi-span long bridges. Furthermore, some devices struggle to achieve accurate positioning when facing complex and variable environmental factors such as wind, water flow, and temperature. To improve the accuracy and efficiency of prefabricated bridge section assembly and reduce construction difficulty and safety risks, it is necessary to develop a more efficient and precise auxiliary positioning device. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary positioning device for assembling precast bridge sections, so as to solve the problem of inconvenience and low accuracy in measuring and confirming the installation position mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary positioning device for assembling precast bridge sections, comprising a fixing frame, a snap-fit ​​column rotatably mounted on the outer surface of one end of the fixing frame, and an mounting pole slidably mounted on the outer surface of the snap-fit ​​column, the mounting pole being square in design, the fixing frame being H-shaped in design, and the end of the fixing frame away from the mounting pole being inserted into the outer surface of the precast beam, a laser instrument fixedly mounted on the outer surface of one end of the mounting pole, and a laser reflection observation plate fixedly mounted on the outer surface of the other mounting pole, the outer surface of the laser reflection observation plate being provided with positioning marks, the laser instrument being located on one side of the hoisted precast beam, and the laser reflection observation plate being located on one side of the fixedly installed precast beam.

[0005] Preferably, the outer surface of the mounting pole is uniformly provided with scale lines, and a screw bolt is threaded onto one side of the outer surface of the snap-fit ​​column, with one end of the screw bolt fitting against the outer surface of the mounting pole.

[0006] By adopting the above technical solution, the height of the installation pole can be adjusted at will by tightening the jack bolts and checking the scale lines, so that the laser instrument and the laser reflection observation plate can be installed at the same height at the moving end and the fixed end of the precast beam.

[0007] Preferably, a spring is provided between the snap-fit ​​post and the fixing frame, and the spring is located at the end away from the spur bolt. A ratchet ring is fixedly installed on the outer surface of the end of the snap-fit ​​post near the spur bolt, and a pointing mechanism is provided between the ratchet ring and the fixing frame.

[0008] By adopting the above technical solution, the angle and position of the snap-fit ​​post on the fixing frame can be easily adjusted and fixed by using the elasticity of the spring and the use of the ratchet ring.

[0009] Preferably, the pointing mechanism includes: a pointer, which is fixedly mounted on the outer surface of one end of a ratchet ring, and the ratchet ring engages with a locking post; the outer surface of the pointer is in contact with the outer surface of the fixing frame; and the outer surface of the fixing frame is provided with an angle line.

[0010] By adopting the above technical solution, the rotation angle of the laser instrument and the laser reflection observation plate can be clearly determined by the angle line set on the outer surface of the pointer and the fixed frame. This allows the fixed frame to be installed on the precast beam, and adjustments can be made when the laser instrument and the laser reflection observation plate are not parallel, further improving the accuracy of the assembly of the precast bridge sections.

[0011] Preferably, a pivot pin is installed through one side of the outer surface of the fixing frame, and the pivot pin is in contact with the outer surface of the fixing frame. A hand-tightening screw is threaded on the outer surface of the fixing frame, and a fastening nut is threaded on the outer surface of the hand-tightening screw. A rotating shaft block is rotatably installed at one end of the hand-tightening screw, and a top-tightening plate is rotatably installed on the outer surface of the rotating shaft block. The other end of the top-tightening plate is passed through by the pivot pin, and the pivot pin and the top-tightening plate are in a sliding connection.

[0012] By adopting the above technical solution, the rotating block can be moved and the top plate can be rotated by inserting the shaft pin and the top plate, rotating the hand screw and fixing the fastening nut. The angle of the top plate can be tilted and adjusted to suit precast beams with different tilt angles. This allows the auxiliary positioning device to be more firmly fixed on the outer surfaces of both sides of the precast beam and can be applied to precast beams of different specifications and sizes, greatly improving the practicality and firmness of the auxiliary positioning device when fixing.

[0013] Preferably, an anti-slip pad is fixedly installed on the outer surface of the top clamping plate, and the outer surface of the anti-slip pad is in contact with the outer surface of the precast beam.

[0014] By adopting the above technical solution, the probability of the positioning device slipping on the precast beam can be effectively reduced, and the stability of the positioning device after installation can be improved.

[0015] Preferably, a tightening screw is threaded onto the outer surface of the fixing frame, and a clamping block is rotatably mounted on the outer surface of one end of the tightening screw, with the outer surface of the clamping block fitting against the outer surface of the precast beam. A level is fixedly mounted on the outer surface of one end of the fixing frame.

[0016] By adopting the above technical solution, a spirit level can be used to determine whether the installation pole of the auxiliary positioning device is parallel to the surface of the precast beam after it is installed on the precast beam, thereby improving the accuracy of the precast beam splicing after installation. By tightening the top screw, the clamping block can be moved, allowing the clamping block to cooperate with the top plate to fix the auxiliary positioning device, which greatly improves the convenience of fixing.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the auxiliary positioning device used for assembling precast bridge sections: 1. During the process, simply insert the fixing frame into the outer surfaces of both the fixed end and the moving end of the precast beam and fix the fixing frame. Then, loosen the spur bolts and adjust the height of the mounting poles on both sides so that the height between the laser instrument and the laser reflection observation plate is the same. After that, the precast beam at the moving end can be lifted by the machine and the laser instrument can be started. The laser instrument illuminates the light spot on the laser reflection observation plate and the positioning mark for accurate positioning. This allows the precast beam to be accurately positioned without measurement during assembly, reducing the cumbersome positioning process. 2. By rotating the hand screw, the rotating shaft block can be moved up and down. In conjunction with the pin, the position of the top plate is restricted, and the angle of the top plate can be adjusted so that the tilt angle of the top plate is the same as the angle on both sides of the precast beam. Then, the position of the hand screw is fixed by tightening the nut, so that precast beams with different tilt angles on both sides can be installed, and the stability of the auxiliary positioning device installed on both sides of the precast beam is improved. 3. After the installation pole is fixed to the outer surface of the clamping column with screw bolts, the clamping column can be slightly lifted and rotated according to the installation position of the fixing frame and the angle of both sides of the precast beam. At the same time, the rotation angle of the clamping column can be confirmed by the pointer and the angle line on the outer surface of the fixing frame. The orientation of the laser instrument and the laser reflection observation plate can be adjusted and fixed by the push of the spring and the engagement of the ratchet ring and the fixing frame. This ensures the convenience of adjustment and further improves the alignment accuracy between the precast beams during installation and splicing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the laser instrument and laser reflection observation plate of this utility model; Figure 2 This is a three-dimensional structural diagram of the fixing frame and anti-slip pad of this utility model; Figure 3This is a three-dimensional structural diagram of the mounting pole and scale lines of this utility model; Figure 4 This is a three-dimensional structural diagram of the shaft pin and rotating shaft block of this utility model; Figure 5 This is a cross-sectional three-dimensional structural diagram of the snap-fit ​​post and spring of this utility model; Figure 6 This is a cross-sectional exploded three-dimensional structural diagram of the fixing frame and the snap-fit ​​column of this utility model.

[0019] In the diagram: 1. Fixing frame; 2. Clip-on post; 3. Mounting pole; 4. Claw bolt; 5. Spring; 6. Ratchet; 7. Scale line; 8. Shaft pin; 9. Tightening plate; 10. Hand screw; 11. Rotating shaft block; 12. Fastening nut; 13. Anti-slip pad; 14. Tightening screw; 15. Pressure block; 16. Level; 17. Pointer; 18. Laser instrument; 19. Laser reflection observation plate. 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 1-6 This utility model provides a technical solution: an auxiliary positioning device for assembling precast bridge sections, including a fixed frame 1. A snap-fit ​​column 2 is rotatably installed on the outer surface of one end of the fixed frame 1, and an mounting pole 3 is slidably installed on the outer surface of the snap-fit ​​column 2. The mounting pole 3 is square in design, and scale lines 7 are evenly opened on the outer surface of the mounting pole 3. A screed bolt 4 is threaded on one side of the outer surface of the snap-fit ​​column 2, and one end of the screed bolt 4 is in contact with the outer surface of the mounting pole 3. The fixed frame 1 is H-shaped, and the end of the fixed frame 1 away from the mounting pole 3 is inserted into the outer surface of the precast beam. A laser instrument 18 is fixedly installed on the outer surface of one end of the mounting pole 3, and a laser reflection observation plate 19 is fixedly installed on the outer surface of the other mounting pole 3. Positioning marks are set on the outer surface of the laser reflection observation plate 19. The laser instrument 18 is located on one side of the hoisted precast beam, and the laser reflection observation plate 19 is located on one side of the fixedly installed precast beam.

[0022] First, during installation, simply adjust the angle of the top clamping plate 9. Then, insert the fixing bracket 1 into both ends of the precast beam and fix it. Next, adjust the height of the mounting pole 3 on the clamping column 2 according to the scale line 7. Then, fix the mounting pole 3 with the screw bolts 4 so that the laser reflection observation plates 19 set on both sides of the precast beam at the moving end are at the same height as the laser instrument 18 set on both sides of the precast beam at the fixed end. Then, the precast beam at the moving end can be lifted by the device and moved to the precast beam at the fixed end. The operator can use the light spot and positioning mark on the laser reflection observation plate 19 illuminated by the laser instrument 18 for auxiliary positioning. This allows the precast beams at the moving end and the fixed end to be accurately spliced ​​and fixed together, greatly reducing the cumbersomeness of splicing precast beams and improving the positioning accuracy.

[0023] A spring 5 is provided between the snap-fit ​​post 2 and the fixing frame 1, and the spring 5 is located at the end away from the spur bolt 4. A ratchet ring 6 is fixedly installed on the outer surface of the end of the snap-fit ​​post 2 near the spur bolt 4. A pointing mechanism is provided between the ratchet ring 6 and the fixing frame 1. The pointing mechanism includes a pointer 17, which is fixedly installed on the outer surface of one end of the ratchet ring 6. The ratchet ring 6 engages with the snap-fit ​​post 2. The outer surface of the pointer 17 is in contact with the outer surface of the fixing frame 1. An angle line is provided on the outer surface of the fixing frame 1.

[0024] Secondly, after the fixing bracket 1 is fixed on both sides of the precast beam and the height of the mounting pole 3 is fixed, the locking column 2 can be slightly pulled up. According to the angle line between the pointer 17 and the outer surface of the fixing bracket 1, the angle between the locking column 2 and the laser instrument 18 and the laser reflection observation plate 19 can be accurately adjusted. This allows adjustment when the laser instrument 18 and the laser reflection observation plate 19 are not parallel to the two sides of the precast beam. Furthermore, the orientation and angle of the laser instrument 18 and the laser reflection observation plate 19 can be easily adjusted by the counter-push of the spring 5 and the engagement of the ratchet ring 6 with the fixing bracket 1. This ensures the accuracy of splicing between precast beams and greatly improves the convenience and flexibility of the auxiliary positioning device during adjustment.

[0025] A pivot pin 8 is installed through one side of the outer surface of the fixing frame 1, and the pivot pin 8 is in contact with the outer surface of the fixing frame 1. A hand-tightening screw 10 is threaded on the outer surface of the fixing frame 1, and a fastening nut 12 is threaded on the outer surface of the hand-tightening screw 10. A rotating shaft block 11 is rotatably installed at one end of the hand-tightening screw 10, and a top-tightening plate 9 is rotatably installed on the outer surface of the rotating shaft block 11. The other end of the top-tightening plate 9 is passed through by the pivot pin 8, and the pivot pin 8 and the top-tightening plate 9 are slidably connected. An anti-slip pad 13 is fixedly installed on the outer surface of the top-tightening plate 9, and the outer surface of the anti-slip pad 13 is in contact with the outer surface of the precast beam. A top-tightening screw 14 is threaded on the outer surface of the fixing frame 1, and a clamping block 15 is rotatably installed on the outer surface of one end of the top-tightening screw 14, and the outer surface of the clamping block 15 is in contact with the outer surface of the precast beam. A level 16 is fixedly installed on the outer surface of one end of the fixing frame 1.

[0026] Before installing the mounting bracket 1, the rotating block 11 can be moved by hand-tightening the screw 10, so that the top plate 9 can be pushed and rotated around the shaft pin 8, and the top plate 9 can slide on the shaft pin 8, allowing the top plate 9 to change its angle. The mounting bracket 1 can be checked for levelness and standard by using the level 16. When the top plate 9 and the surface of the precast beam have the same inclination angle, the top plate 9 can be locked by tightening the nut 12 to fix the angle of the top plate 9. Then, the clamping block 15 can be pushed against the precast beam by tightening the top screw 14. With the use of the anti-slip pad 13, the anti-slip performance of the auxiliary positioning device is further improved, so that the auxiliary positioning device can be firmly fixed on the outer surface of both ends of the precast beams of different specifications and sizes, which greatly improves the firmness and flexibility of the auxiliary positioning device during installation.

[0027] Working principle: When splicing precast beams, the angle of the top tightening plate 9 on the fixing frame 1 can be adjusted first by hand-tightening screw 10. Then, the hand-tightening screw 10 is locked by tightening nut 12. Subsequently, the fixing frame 1 can be inserted into the outer surfaces of both the fixed end and the moving end of the precast beam. Then, by tightening the top tightening screw 14, the pressing block 15 moves towards the precast beam, and together with the top tightening plate 9, the fixing frame 1 is firmly fixed to the outer surfaces of both sides of the precast beam. After that, the height of the installation pole 3 on the clamping column 2 can be adjusted, and the installation pole 3 can be fixed by the claw bolt 4. Then, the upper... The lifting post 2 is used, and the orientation of the laser instrument 18 and the laser reflection observation plate 19 is adjusted by the angle line between the pointer 17 and the fixing frame 1. The angle of the laser instrument 18 and the laser reflection observation plate 19 is fixed by the counter push of the spring 5 and the engagement of the ratchet ring 6 with the fixing frame 1. Then, the precast beam at the moving end can be lifted by tools and brought closer to the fixed precast beam. The light spot and positioning mark on the outer surface of the laser reflection observation plate 19 illuminated by the laser instrument 18 are used to assist in the positioning of the moving end and the fixed end of the precast beam, which greatly reduces the cumbersome alignment during splicing and improves the convenience of use.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning device for assembling precast bridge sections, comprising a fixing frame (1), wherein a snap-fit ​​column (2) is rotatably mounted on the outer surface of one end of the fixing frame (1), and an mounting pole (3) is slidably mounted on the outer surface of the snap-fit ​​column (2), wherein the mounting pole (3) is square, the fixing frame (1) is h-shaped, and the end of the fixing frame (1) away from the mounting pole (3) is inserted into the outer surface of the precast beam, characterized in that: A laser instrument (18) is fixedly installed on the outer surface of one end of the mounting pole (3), and a laser reflection observation plate (19) is fixedly installed on the outer surface of the other mounting pole (3). The outer surface of the laser reflection observation plate (19) is provided with positioning marks. The laser instrument (18) is located on one side of the hoisted precast beam, and the laser reflection observation plate (19) is located on one side of the fixedly installed precast beam.

2. The auxiliary positioning device for assembling precast segments of a bridge according to claim 1, characterized in that: The outer surface of the mounting pole (3) is uniformly marked with scale lines (7), and one side of the outer surface of the snap-fit ​​column (2) is threaded with a screw bolt (4), and one end of the screw bolt (4) is in contact with the outer surface of the mounting pole (3).

3. The auxiliary positioning device for assembling precast segments of a bridge according to claim 1, characterized in that: A spring (5) is provided between the snap-fit ​​post (2) and the fixing frame (1), and the spring (5) is located at the end away from the spur bolt (4). A ratchet ring (6) is fixedly installed on the outer surface of the snap-fit ​​post (2) near the spur bolt (4), and a pointing mechanism is provided between the ratchet ring (6) and the fixing frame (1).

4. The auxiliary positioning device for assembling precast segments of a bridge according to claim 3, characterized in that: The pointing mechanism includes: a pointer (17), which is fixedly installed on the outer surface of one end of a ratchet ring (6), and the ratchet ring (6) engages with a snap-fit ​​post (2). The outer surface of the pointer (17) is in contact with the outer surface of the fixing frame (1), and the outer surface of the fixing frame (1) is provided with an angle line.

5. The auxiliary positioning device for assembling precast segments of a bridge according to claim 1, characterized in that: A shaft pin (8) is installed through one side of the outer surface of the fixing frame (1), and the shaft pin (8) is in contact with the outer surface of the fixing frame (1). A hand screw (10) is threaded on the outer surface of the fixing frame (1), and a fastening nut (12) is threaded on the outer surface of the hand screw (10). A rotating shaft block (11) is rotatably installed at one end of the hand screw (10), and a top plate (9) is rotatably installed on the outer surface of the rotating shaft block (11). The other end of the top plate (9) is passed through by the shaft pin (8), and the shaft pin (8) and the top plate (9) are slidably connected.

6. An auxiliary positioning device for assembling precast bridge sections according to claim 5, characterized in that: The outer surface of the top plate (9) is fixedly installed with an anti-slip pad (13), and the outer surface of the anti-slip pad (13) is in contact with the outer surface of the precast beam.

7. The auxiliary positioning device for assembling precast segments of a bridge according to claim 1, characterized in that: The outer surface of the fixing frame (1) is threaded with a tightening screw (14), and a clamping block (15) is rotatably installed on the outer surface of one end of the tightening screw (14), and the outer surface of the clamping block (15) is in contact with the outer surface of the precast beam. A level (16) is fixedly installed on the outer surface of one end of the fixing frame (1).

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