A method of positioning and assembling a bridge precast structure and use thereof

Abstract

This invention provides a method for positioning and assembling a precast bridge structure and its application. The method includes a fixed frame mechanism positioned on the left side of the joint between two precast bridge components. A sliding plate, L-shaped, is located on the left side of the fixed frame mechanism. Two telescopic rods are spaced apart vertically on the right end of the sliding plate. A side plate extending vertically is fixed to the left side of the sliding plate, and a pressure sensor is located on the front side plate. The pressure sensor signal is connected to a controller. After the precast bridge component is hoisted, it can be suspended using a hoisting device. A clamping block is then used to clamp the corresponding precast bridge component. The distance between the two precast bridge components is measured using a second distance sensor and a reflector, allowing for adjustment of the precast bridge component. This eliminates the need for a single tool, making the operation convenient and significantly improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of prefabricated structure assembly technology, specifically a method for positioning and assembling a prefabricated bridge structure and its application. Background Technology

[0002] Prefabricated bridges are bridges constructed primarily from precast components through assembly and connection processes. These precast components are designed in advance in factories, allowing for quality control and easy assembly of individual parts according to their respective positions. While prefabricated construction has a long history in my country, its practical application is limited. Prefabricated construction methods offer advantages in terms of ease of quality management and schedule control. Currently, bridges are typically suspended and then assembled, a process that is cumbersome for precise positioning, impacting construction efficiency. Furthermore, existing bridge assembly methods require waiting for worker feedback before proceeding to the next step, which is not only unsafe and prone to injury but also has a low safety factor. Summary of the Invention

[0003] The purpose of this invention is to provide a method for positioning and assembling prefabricated bridge structures and its application, aiming to solve the problems of cumbersome precise positioning and assembly, low safety factor, and low construction efficiency in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a bridge prefabricated structure positioning and assembly method and its usage method, including a fixing frame mechanism, which is used to be located on the left side of the joint of two bridge prefabricated components;

[0005] The left side of the fixed frame mechanism is equipped with a pull-out plate that can slide back and forth. The pull-out plate is an L-shaped plate structure. The right end of the pull-out plate is equipped with two telescopic rod structures that are spaced apart vertically. The two telescopic rod structures are clamped on the upper and lower sides of the bridge precast component.

[0006] A fixed block extending in the left-right direction is fixedly provided on the pull-out plate. Two telescopic rods are provided on the upper and lower sides of the fixed block, which are spaced apart vertically. The telescopic rods extend in the vertical direction and are fixedly connected to each other.

[0007] The left side of the pull-out panel is fixedly equipped with a side plate extending vertically. A pressure sensor is installed on the front side plate. The pressure sensor signal is connected to a controller, which controls a warning light and a buzzer. The controller, warning light, and buzzer are all located in the control room of the suspended equipment.

[0008] Preferably, the right end of the fixed frame mechanism is provided with a fixed plate that can slide back and forth. The fixed plate is used to abut against the left side of the bridge precast component. The front and rear fixed plates are respectively provided with a second ranging sensor and a reflective block, and the second ranging sensor and the reflective block are corresponding to each other.

[0009] Preferably, the fixed frame mechanism includes a U-shaped frame and crossbars fixed to the front and rear sides of the U-shaped frame and extending in the front-rear direction;

[0010] The pull-out panel includes a horizontal panel extending in the front-to-back direction and a vertical panel extending in the up-down direction, with a fixing block fixedly connected to the right side of the vertical panel.

[0011] A rack is fixedly installed on the lower side of the upper horizontal plate. A gear is meshed at the lower end of the rack. A rotating shaft extending in the left-right direction is fixedly installed at the right end of the gear. A connecting plate is fixedly installed on the rotating shaft. The connecting plate has two rotating holes spaced vertically. The rotating holes are symmetrically distributed vertically on the connecting plate with the rotating shaft as the center. The rotating holes are open from left to right. A first rotating shaft is rotatably installed in the rotating hole. A rotating rod is fixedly installed on the first rotating shaft. A through hole is opened at the end of the rotating rod away from the first rotating shaft. A second rotating shaft is rotatably installed in the through hole. The right end of the second rotating shaft is fixedly connected to the fixed plate.

[0012] Preferably, the pull-out plate has a sliding groove extending along the front and back, and a limit plate is fixedly installed on the U-shaped frame. The pull-out plate is movably inserted through the space formed by the limit plate and the U-shaped frame.

[0013] A circular block is fixedly installed on the limiting plate. The circular block slides in the sliding groove. The limiting plate has an L-shaped structure and is located at the left end of the pull-out plate.

[0014] Preferably, the telescopic rod structure includes a sleeve and a clamping block rod slidably disposed in the sleeve, the clamping block rod extending in the left and right direction to clamp the upper and lower sides of the bridge precast component;

[0015] The sleeve has a threaded hole, and the inside of the threaded hole has an extrusion stud that matches the thread pattern. The outside of the clamping block has a slot that matches the extrusion stud, and the slots are evenly distributed on the clamping block.

[0016] Preferably, a slide rail extending in the front-back direction is fixedly provided on the right side of the crossbar, and a slider that can slide back and forth is provided on the slide rail, with the right end of the slider being fixedly connected to the fixed plate.

[0017] Both the front and rear sides of the slide rail are fixedly equipped with baffles, and the first distance measuring sensor is located on the lower side of the upper baffle.

[0018] Preferably, the front side plate is provided with a cylinder extending forward and backward, and the rear side plate is provided with a top block that can be inserted into the cylinder, with the top block pressing against the pressure sensor.

[0019] Preferably, in step S1, two adjacent precast bridge components are suspended above the pier using a suspension device;

[0020] S2, place the device on the gap between the two bridge precast components and turn on the second distance sensor. The second distance sensor emits a signal, which is transmitted to the reflector and then reflected back to the second distance sensor to measure the distance between the two bridge precast components.

[0021] S3, loosen the extrusion stud, pull the clamping block rod from the sleeve, and after the clamping block rod can clamp the bridge precast component, tighten the extrusion stud to lock the clamping block rod, and adjust the distance of the telescopic rod so that the clamping block rod clamps the front bridge precast component and the rear bridge precast component respectively.

[0022] S4, the suspension equipment moves the bridge precast component so that the two bridge precast components are level. During the movement of the bridge precast component, the pull plate moves in the opposite direction at the same time until the top block is inserted into the cylinder and presses against the pressure sensor. The pressure sensor sends a signal to the controller.

[0023] S5, the buzzer and flashing light in the control room of the suspended equipment indicate that the operator controls the suspended equipment to stop moving.

[0024] The beneficial effects are: 1. After the bridge precast components are suspended, they can be suspended by the suspension equipment, and then the clamping block rod can be clamped to the corresponding bridge precast components. The distance between the two bridge precast components can be measured by the second distance sensor and the reflector block, thereby adjusting the bridge precast components. No single tool is needed for adjustment, which is convenient to operate and greatly improves construction efficiency.

[0025] 2. The buzzer, controller, and warning lights are all located in the control room of the suspension equipment, so that during the suspension process, workers do not need to monitor in real time. The suspension workers can also understand the positioning and assembly status of the bridge prefabricated components and make adjustments. This eliminates the need to arrange workers to measure at close range after the bridge prefabricated components are connected, thus improving the safety factor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall left-side structure in a specific embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the overall right-side structure in a specific embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the pull-out plate operation structure in a specific embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the fixed plate operation structure in a specific embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the rotating rod rotation structure in a specific embodiment of the present invention.

[0031] Figure 6 This is a partial cross-sectional view of the side plate in a specific embodiment of the present invention.

[0032] Figure 7 This is a partial cross-sectional view of the slider structure in a specific embodiment of the present invention.

[0033] In the diagram: 1. Bridge precast component; 2. Telescopic rod; 3. Rotating shaft; 4. Clamping block rod; 5. Sleeve; 6. Top block; 7. Cylinder; 8. Pressure sensor; 11. Gear; 12. Fixing plate; 13. Slider; 14. Fixing frame mechanism; 1401. Crossbar; 1402. U-shaped frame; 15. Slide rail; 17. Rack; 18. Connecting plate; 19. Rotating rod; 20. Limiting plate; 21. Pull-out plate; 2101. Horizontal plate; 2102. Vertical plate; 22. Sliding groove; 23. Side plate; 24. Extrusion stud; 25. Blocking plate; 27. Second ranging sensor; 28. Reflector block. Detailed Implementation

[0034] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0035] like Figures 1-7 As shown, a bridge prefabricated structure positioning and assembly method and its use include a fixing frame mechanism 14, which is used to be located on the left side of the joint of two bridge prefabricated components 1.

[0036] The left side of the fixed frame mechanism 14 is provided with a pull-out plate 21 that can slide back and forth. The pull-out plate 21 is an L-shaped plate structure. The right end of the pull-out plate 21 is provided with two telescopic rod structures that are spaced apart vertically. The two telescopic rod structures are clamped on the upper and lower sides of the bridge precast component 1.

[0037] A fixed block extending in the left and right direction is fixedly provided on the pull-out plate 21. When the suspension equipment is in operation, it can drive the side plate 23 and the pull-out plate 21 to move together to avoid tilting and falling. Two telescopic rods 2 are provided on the upper and lower sides of the fixed block. The telescopic rods 2 extend in the up and down direction and are fixedly connected to the telescopic rod structure.

[0038] A side plate 23 extending vertically is fixedly provided on the left side of the pull-out plate 21. A pressure sensor 8 is provided on the front side plate 23. The pressure sensor 8 is connected to a controller. When the warning light flashes green, it is considered that the two bridge prefabricated components 1 are assembled successfully. When the warning light shows red, it is considered that the two bridge prefabricated components 1 are unqualified and need fine-tuning. If the warning light is yellow, it is considered to be in standby and not in use. In this way, workers do not need to stand nearby to observe, thus ensuring the safety of workers. Moreover, the operator of the suspended equipment can also react according to the warning light and buzzer in the room. The controller controls the warning light and buzzer respectively. The controller, warning light and buzzer are all located in the control room of the suspended equipment.

[0039] The right end of the fixed frame mechanism 14 is provided with a fixed plate 12 that can slide back and forth. The fixed plate 12 is used to abut against the left side of the bridge precast component 1. The front and rear fixed plates 12 are respectively provided with a second distance sensor 27 and a reflector block 28. The second distance sensor 27 and the reflector block 28 are corresponding to each other. The bridge precast component 1 is made to fit together by the second distance sensor 27 and the reflector block 28, thereby adjusting the bridge precast component 1 horizontally.

[0040] The fixed frame mechanism 14 includes a U-shaped frame 1402 and a crossbar 1401 fixed on the front and rear sides of the U-shaped frame 1402 and extending in the front and rear direction;

[0041] The pull-out plate 21 includes a horizontal plate 2101 extending in the front-to-back direction and a vertical plate 2102 extending in the up-down direction, and the fixing block is fixedly connected to the right side of the vertical plate 2102.

[0042] A rack 17 is fixedly mounted on the lower side of the upper horizontal plate 2101. A gear 11 meshes with the lower end of the rack 17. A rotating shaft 3 extending in the left-right direction is fixedly mounted on the right end of the gear 11. When the pull-out plate 21 moves, the meshing of the gear 11 drives the rotating shaft 3 to rotate, thereby causing the connecting plate 18 to rotate. The connecting plate 18 is fixedly mounted on the rotating shaft 3. The connecting plate 18 has two rotating holes spaced vertically. The rotating holes are symmetrically distributed vertically on the connecting plate 18 with the rotating shaft 3 as the center. During the rotation, the connecting plate 18 rotates in both forward and reverse directions, rather than rotating in a single direction continuously. When rotating forward, the rotating rod 19 can drive the fixed plate 12 to retract inward. When the rotation is reversed, the fixed plate 12 can be expanded outward by rotating the rod 19. The rotation angles for both forward and reverse rotations are no greater than 180°. The rotating hole is a through-hole structure. A first rotating shaft is installed inside the rotating hole, and a rotating rod 19 is fixed on the first rotating shaft. A through-hole is opened at the end of the rotating rod 19 away from the first rotating shaft. When the suspension equipment moves the bridge precast component 1, the fixed plate 12 can be contracted inward by rotating the rod 19, so that the two bridge precast components 1 fit together. A second rotating shaft is installed inside the through-hole. The right end of the second rotating shaft is fixedly connected to the fixed plate 12. After use, the worker manually expands the fixed plate 12 outward for the next use.

[0043] The pull-out plate 21 has a sliding groove 22 extending along the front and back. A limit plate 20 is fixedly installed on the U-shaped frame 1402. The pull-out plate 21 is movably inserted through the space formed by the limit plate 20 and the U-shaped frame 1402. The arrangement of the round block and the sliding groove 22 ensures that the pull-out plate 21 will not shake when it moves.

[0044] A circular block is fixedly installed on the limiting plate 20. The circular block is slidably installed in the sliding groove 22. The limiting plate 20 has an L-shaped structure and is located at the left end of the pull-out plate 21.

[0045] The telescopic rod structure includes a sleeve 5 and a clamping block rod 4 slidably disposed in the sleeve 5. The clamping block rod 4 extends in the left and right direction to clamp the upper and lower sides of the bridge precast component 1. When it is necessary to pull out the clamping block rod 4, the compression stud 24 is manually loosened so that the compression stud 24 is not engaged with the clamping block rod 4, and then it can be pulled out. When the compression stud 24 is tightened, the clamping block rod 4 will not fall out of the sleeve 5.

[0046] The sleeve 5 has a threaded hole, and the inside of the threaded hole is provided with an extrusion stud 24 that matches the thread pattern. The outside of the clamping block 4 has a slot that matches the extrusion stud 24, and the slots are evenly distributed on the clamping block 4.

[0047] A slide rail 15 extending in the front-back direction is fixedly provided on the right side of the crossbar 1401. A slider 13 that can slide back and forth is provided on the slide rail 15. The right end of the slider 13 is fixedly connected to the fixed plate 12.

[0048] Baffles 25 are fixedly installed on both the front and rear sides of the slide rail 15.

[0049] The front side plate 23 is provided with a cylinder 7 extending from front to back, and the rear side plate 23 is provided with a top block 6 that can be inserted into the cylinder 7, and the top block 6 rests on the pressure sensor 8.

[0050] The method of using a positioning and assembly device for prefabricated bridge structures is as follows:

[0051] S1, suspend two adjacent precast bridge components 1 above the pier using a suspension device;

[0052] S2, place the device on the gap between the two bridge precast components 1, and turn on the second distance sensor 27. The second distance sensor 27 emits a signal, which is transmitted to the reflector block 28 and then reflected back to the second distance sensor 27 to measure the distance between the two bridge precast components 1.

[0053] S3, loosen the extrusion stud 24, pull the clamping block rod 4 out of the sleeve 5, and after the clamping block rod 4 can clamp the bridge precast component 1, tighten the extrusion stud 24 to lock the clamping block rod 4, adjust the distance of the telescopic rod 2 so that the clamping block rod 4 clamps the front bridge precast component 1 and the rear bridge precast component 1 respectively. When the extrusion stud 24 is tightened, the clamping block rod 4 will not fall out of the sleeve 5.

[0054] S4, the suspension equipment moves the bridge precast component 1 so that the two bridge precast components 1 are level. During the movement of the bridge precast component 1, the pull plate 21 moves in the opposite direction at the same time until the top block 6 is inserted into the cylinder 7 and presses against the pressure sensor 8. The pressure sensor 8 sends a signal to the controller. When the top block 6 presses against the pressure sensor 8, the warning light in the suspension equipment flashes green. When the top block 6 does not press against the pressure sensor 8, the corresponding warning light will not light up.

[0055] S5, the buzzer and flashing light in the control room of the suspended equipment indicate that the operator controls the suspended equipment to stop moving.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positioning and assembly device for prefabricated bridge structures, characterized in that, Includes a fixed frame mechanism (14), which is located on the left side of the joint of the two bridge precast components (1); The left side of the fixed frame mechanism (14) is provided with a pull plate (21) that can slide back and forth. The pull plate (21) is an L-shaped plate structure. The right end of the pull plate (21) is provided with two telescopic rod structures that are spaced apart vertically. The two telescopic rod structures are clamped on the upper and lower sides of the bridge precast component (1). A fixed block extending in the left and right direction is fixedly provided on the pull-out plate (21). Two telescopic rods (2) are provided on the upper and lower sides of the fixed block, which are spaced apart. The telescopic rods (2) extend in the up and down direction and are fixedly connected to the telescopic rod structure. The right end of the fixed frame mechanism (14) is provided with a fixed plate (12) that can slide back and forth. The fixed plate (12) is used to abut against the left side of the bridge precast component (1). The front and rear fixed plates (12) are respectively provided with a second distance sensor (27) and a reflector (28). The second distance sensor (27) and the reflector (28) are corresponding to each other. A side plate (23) extending vertically is fixedly provided on the left side of the pull-out plate (21). A pressure sensor (8) is provided on the front side plate (23). The pressure sensor (8) is connected to a controller. The controller controls the warning light and the buzzer respectively. The controller, the warning light and the buzzer are all located in the control room of the suspended equipment.

2. The bridge prefabricated structure positioning and assembly device according to claim 1, characterized in that: The fixed frame mechanism (14) includes a U-shaped frame (1402) and crossbars (1401) fixed on the front and rear sides of the U-shaped frame (1402) and extending in the front and rear direction. The pull-out panel (21) includes a horizontal panel (2101) extending in the front-to-back direction and a vertical panel (2102) extending in the up-down direction, and a fixing block is fixedly connected to the right side of the vertical panel (2102). A rack (17) is fixedly provided on the lower side of the upper horizontal plate (2101). A gear (11) meshes with the lower end of the rack (17). A rotating shaft (3) extending in the left and right direction is fixedly provided on the right end of the gear (11). A connecting plate (18) is fixedly provided on the rotating shaft (3). Two rotating holes are provided on the connecting plate (18) with a vertical spacing. The rotating holes are symmetrically distributed on the connecting plate (18) with the rotating shaft (3) as the center. The rotating holes are open in the left and right. A first rotating shaft is rotatably provided in the rotating hole. A rotating rod (19) is fixedly provided on the first rotating shaft. A round hole with a left and right open is opened at the end of the rotating rod (19) away from the first rotating shaft. A second rotating shaft is rotatably provided in the round hole. The right end of the second rotating shaft is fixedly connected to the fixed plate (12).

3. The bridge prefabricated structure positioning and assembly device according to claim 2, characterized in that: A sliding groove (22) extending along the front and back is provided on the pull-out plate (21), and a limiting plate (20) is fixedly provided on the U-shaped frame (1402). The pull-out plate (21) is movably inserted through the space formed by the limiting plate (20) and the U-shaped frame (1402). A circular block is fixedly installed on the limiting plate (20), and the circular block is slidably installed in the sliding groove (22). The limiting plate (20) has an L-shaped structure and is located at the left end of the pull plate (21).

4. The bridge prefabricated structure positioning and assembly device according to claim 3, characterized in that: The telescopic rod structure includes a sleeve (5) and a clamping block rod (4) that is slidably disposed in the sleeve (5). The clamping block rod (4) extends in the left and right direction to clamp the upper and lower sides of the bridge precast component (1). The sleeve (5) has a threaded hole, and the inside of the threaded hole is provided with an extrusion stud (24) that matches the thread pattern. The outside of the clamping block (4) is provided with a slot that matches the extrusion stud (24), and the slots are evenly distributed on the clamping block (4).

5. A bridge prefabricated structure positioning and assembly device according to claim 4, characterized in that: A slide rail (15) extending in the front-back direction is fixedly provided on the right side of the crossbar (1401). A slider (13) that can slide back and forth is provided on the slide rail (15). The right end of the slider (13) is fixedly connected to the fixed plate (12). Baffles (25) are fixedly installed on both the front and rear sides of the slide rail (15).

6. A bridge prefabricated structure positioning and assembly device according to claim 5, characterized in that: a cylindrical (7) extending forward and backward is provided on the front side plate (23), and a top block (6) that can be inserted into the cylindrical (7) is provided on the rear side plate (23), and the top block (6) rests on the pressure sensor (8).

7. The method of using the bridge prefabricated structure positioning and assembly device according to claim 6, characterized in that, The specific steps are as follows: S1, suspend two adjacent precast bridge components (1) above the pier using a suspension device; S2, place the device on the gap between the two bridge precast components (1) and turn on the second distance sensor (27). The second distance sensor (27) sends a signal, which is transmitted to the reflector block (28) and then reflected back to the second distance sensor (27) to measure the distance between the two bridge precast components (1). S3, loosen the extrusion stud (24), pull the clamping block rod (4) from the sleeve (5), and after the clamping block rod (4) can clamp the bridge precast component (1), tighten the extrusion stud (24) to clamp the clamping block rod (4), and adjust the distance of the telescopic rod (2) so that the clamping block rod (4) clamps the front bridge precast component (1) and the rear bridge precast component (1) respectively. S4, the suspension equipment moves the bridge precast component (1) so that the two bridge precast components (1) are level. During the movement of the bridge precast component (1), the pull plate (21) moves in the opposite direction at the same time until the top block (6) is inserted into the cylinder (7) and presses against the pressure sensor (8). The pressure sensor (8) sends a signal to the controller. S5, the buzzer and flashing light in the control room of the suspended equipment indicate that the operator controls the suspended equipment to stop moving.

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