Rotary connection assembly for bridge hoisting

Abstract

This utility model relates to the field of bridge hoisting technology and discloses a rotating connection assembly for bridge hoisting, including a support column. A crossbeam is fixedly connected to the top of the support column, and a guide rail is fixedly connected to the front side of the outer wall of the crossbeam. A boom is slidably connected to the outer wall of the guide rail, and a fixing mechanism is installed at the bottom of the boom. The fixing mechanism is used to improve the structural rigidity. In this utility model, rotating the turntable causes the bidirectional lead screw to rotate on the inner wall of the fixing block. When the bidirectional lead screw rotates, it drives the pivot on its outer wall to move. The movement of the pivot causes the clamping block to rotate on the inner wall of the limiting plate, thereby allowing the clamping block to perform opening and closing actions and fixing the limiting block on its inner wall. The operation is convenient and can form a stable connection, preventing fatigue cracks that are prone to occur when the structure is subjected to alternating loads for a long time. This is especially true during the hoisting start and braking stages, which can easily lead to breakage, loosening of the connecting parts, disintegration of the rotating assembly, and hoisting accidents.

Description

Technical Field

[0001] This utility model relates to the field of bridge hoisting technology, and in particular to a rotary connection assembly for bridge hoisting. Background Technology

[0002] Bridge hoisting is a systematic engineering project that integrates mechanics, structure, and control technology. It is a key link in bridge construction and refers to the process of accurately hoisting prefabricated components, such as beams and bridge decks, to the designed position and completing the installation using specialized equipment. It is technically complex and has strict safety requirements, so detailed plans need to be developed based on the characteristics of the project.

[0003] Rotary connection assemblies for bridge hoisting are key components for enabling multi-angle rotation and attitude adjustment of hoisted components. They are mainly used to connect lifting tools and prefabricated components, and to transmit and change the direction of force under complex hoisting conditions. They bear the self-weight of the components and the dynamic load of hoisting, while ensuring the reliability of the connection during rotation.

[0004] In the existing technology, this structure uses high-strength alloy structural steel, which is surface carburized and quenched. It allows the components to rotate horizontally and swing in pitch during hoisting, adapting to complex positioning requirements, bearing the self-weight of the load-bearing components and the dynamic load of hoisting, while ensuring the reliability of the connection during rotation. The flexible structure alleviates the impact load during hoisting start-up and braking, such as the inertial force caused by the swing of the wire rope. In low-temperature environments, the solidification of bearing grease leads to an increase in rotational resistance. Silicon-based low-temperature resistant grease is used in conjunction with an electrically heated insulation sleeve to ensure normal rotation in low-temperature environments. However, the structure is prone to fatigue cracks when subjected to alternating loads for a long time, especially during the hoisting start-up and braking stages, which can easily lead to fracture, loosening of the connecting parts, disintegration of the rotating components, and hoisting accidents. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a rotating connection assembly for bridge hoisting, which aims to improve the problem that the existing technology is prone to fatigue cracks when the structure is subjected to alternating loads for a long time, especially during the hoisting start and braking stages, which can easily lead to breakage, loosening of the connecting parts, disintegration of the rotating assembly, and hoisting accidents.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotating connection assembly for bridge hoisting, comprising a support column, a crossbeam fixedly connected to the top of the support column, a guide rail fixedly connected to the front side of the outer wall of the crossbeam, a boom slidably connected to the outer wall of the guide rail, a fixing mechanism installed at the bottom of the boom to improve structural rigidity, and a rotating mechanism installed at the bottom of the fixing mechanism to facilitate rotation; the fixing mechanism comprises a fixing block fixedly connected to the bottom wall of the boom, limit plates fixedly connected to the left and right sides of the bottom wall of the fixing block, a clamping block rotatably connected to the inner side of the limit plate, and a driving assembly installed on the inner wall of the fixing block.

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

[0008] The drive assembly includes a bidirectional lead screw, which is rotatably connected to the bottom wall of the fixed block, and a turntable is fixedly connected to the rear end of the bidirectional lead screw.

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

[0010] The outer wall of the bidirectional lead screw is threaded with a rotating shaft on both the front and rear sides, and the rotating shaft is rotatably connected to the inner wall of the clamping block.

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

[0012] The rotating mechanism includes a limiting block, which is installed on the inner wall of the limiting plate. A fixing ring is rotatably connected to the middle of the bottom wall of the limiting block. Connecting plates are fixedly connected to the left and right sides of the outer wall of the fixing ring. A connecting block is fixedly connected to the bottom of the connecting plate. A vibration damping component is installed in the middle of the outer wall of the connecting block.

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

[0014] The vibration damping assembly includes a spring, which is installed in the middle of the outer wall of the connecting block, and a connecting rod is installed on the outer wall of the spring.

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

[0016] A damping rod is installed at the bottom of the fixed ring, and a second rotating shaft is rotatably connected to the lower middle part of the outer wall of the connecting block. The damping rod is connected to the second rotating shaft.

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

[0018] A positioning block is installed on the top of the crossbeam, and the positioning block is fixedly connected to the top wall of the crossbeam at equal intervals.

[0019] As a further description of the above technical solution:

[0020] A flange is fixedly connected to the inner side of the second rotating shaft, and a bearing is installed on the inner wall of the flange.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, rotating the turntable drives the bidirectional lead screw, causing the bidirectional lead screw to rotate on the inner wall of the fixed block. When the bidirectional lead screw rotates, it drives the rotating shaft on its outer wall to move. The movement of the rotating shaft causes the clamping block to rotate on the inner wall of the limiting plate, thereby allowing the clamping block to perform opening and closing actions and fix the limiting block on its inner wall. The operation is convenient and can form a stable connection, preventing fatigue cracks that are prone to occur when the structure is subjected to alternating loads for a long time. In particular, it is easy to cause fractures during the hoisting start and braking stages, which can cause the connecting parts to loosen, leading to the disintegration of the rotating components and causing hoisting accidents.

[0023] 2. In this utility model, the fixing ring rotates on the bottom wall of the limiting block, thereby enabling the connecting assembly to rotate in all directions. At the same time, connecting plates are installed on both sides of the outer wall of the fixing ring, and connecting blocks are fixedly connected to the bottom of the connecting plates. A second rotating shaft is rotatably connected to the inner side of the connecting block. The flange is connected to the second rotating shaft, enabling the connecting assembly to rotate at multiple angles. The damping rod can limit the rotation angle of the flange, preventing the flange from excessively deflecting and causing collisions and imbalances. Meanwhile, the spring can absorb the vibration generated when the flange rotates, preventing the structure from loosening and extending the service life of the structure. Attached Figure Description

[0024] Figure 1 This is a perspective view of the rotating connection assembly for bridge hoisting proposed in this utility model;

[0025] Figure 2 This is a front view of the rotating connection assembly for bridge hoisting proposed in this utility model;

[0026] Figure 3 This is a partial structural schematic diagram of the rotating connection assembly for bridge hoisting proposed in this utility model;

[0027] Figure 4 This is a partial structural detail of the rotating connection assembly for bridge hoisting proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the rotating mechanism of the rotating connection assembly for bridge hoisting proposed in this utility model.

[0029] Legend:

[0030] 1. Support column; 2. Crossbeam; 3. Guide rail; 4. Boom; 5. Fixing mechanism; 501. Drive assembly; 5011. Turntable; 5012. Double-acting lead screw; 502. Fixing block; 503. Limiting plate; 504. Clamping block; 505. Rotating shaft one; 6. Rotating mechanism; 601. Limiting block; 602. Fixing ring; 603. Connecting plate; 604. Vibration damping assembly; 6041. Spring; 6042. Connecting rod; 605. Connecting block; 606. Rotating shaft two; 607. Damping rod; 7. Positioning block; 8. Flange; 9. Bearing. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a rotating connection assembly for bridge hoisting, comprising a support column 1, a crossbeam 2 fixedly connected to the top of the support column 1, a guide rail 3 fixedly connected to the front side of the outer wall of the crossbeam 2, a boom 4 slidably connected to the outer wall of the guide rail 3, a fixing mechanism 5 installed at the bottom of the boom 4 to improve structural rigidity, and a rotating mechanism 6 installed at the bottom of the fixing mechanism 5 to facilitate rotation; the fixing mechanism 5 includes a fixing block 502, which is fixedly connected to the bottom wall of the boom 4 for fixing... Limiting plates 503 are fixedly connected to the left and right sides of the bottom wall of block 502. Clamping blocks 504 are rotatably connected to the inner side of the limiting plates 503. A driving assembly 501 is installed on the inner wall of the fixed block 502. The driving assembly 501 includes a bidirectional lead screw 5012. The bidirectional lead screw 5012 is rotatably connected to the bottom wall of the fixed block 502. A turntable 5011 is fixedly connected to the rear end of the bidirectional lead screw 5012. A rotating shaft 505 is threadedly connected to the front and rear sides of the outer wall of the bidirectional lead screw 5012. The rotating shaft 505 is rotatably connected to the inner wall of the clamping block 504.

[0033] Specifically, rotating the turntable 5011 drives the bidirectional lead screw 5012, causing the bidirectional lead screw 5012 to rotate on the inner wall of the fixed block 502. When the bidirectional lead screw 5012 rotates, it drives the rotating shaft 505 on its outer wall to move. The movement of the rotating shaft 505 causes the clamping block 504 to rotate on the inner wall of the limiting plate 503, thereby allowing the clamping block 504 to perform opening and closing actions, fixing the limiting block 601 on its inner wall. The operation is convenient and can form a stable connection, preventing fatigue cracks that are prone to occur when the structure is subjected to alternating loads for a long time. In particular, it is easy to cause fractures during the hoisting start and braking stages, which can cause the connecting parts to loosen, leading to the disintegration of the rotating components and causing hoisting accidents.

[0034] Reference Figure 3 , Figure 4 and Figure 5 The rotating mechanism 6 includes a limiting block 601, which is installed on the inner wall of the limiting plate 503. A fixing ring 602 is rotatably connected to the middle of the bottom wall of the limiting block 601. A connecting plate 603 is fixedly connected to the left and right sides of the outer wall of the fixing ring 602. A connecting block 605 is fixedly connected to the bottom of the connecting plate 603. A vibration damping component 604 is installed in the middle of the outer wall of the connecting block 605. The vibration damping component 604 includes a spring 6041, which is installed in the middle of the outer wall of the connecting block 605. A connecting rod 6042 is installed on the outer wall of the spring 6041. A damping rod 607 is installed at the bottom end of the fixing ring 602. A rotating shaft 606 is rotatably connected to the lower middle part of the outer wall of the connecting block 605. The damping rod 607 is connected to the rotating shaft 606.

[0035] Specifically, the fixing ring 602 rotates on the bottom wall of the limiting block 601, allowing the connecting assembly to rotate in all directions. At the same time, connecting plates 603 are installed on both sides of the outer wall of the fixing ring 602. A connecting block 605 is fixedly connected to the bottom of the connecting plate 603. A rotating shaft 606 is rotatably connected to the inner side of the connecting block 605. The flange 8 is connected to the rotating shaft 606, allowing the connecting assembly to rotate at multiple angles. The damping rod 607 can limit the rotation angle of the flange 8, preventing the flange 8 from deflecting excessively and causing collisions and imbalances. Meanwhile, the spring 6041 can absorb the vibration generated when the flange 8 rotates, preventing the structure from loosening and extending the service life of the structure.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A positioning block 7 is installed on the top of the crossbeam 2. The positioning block 7 is fixedly connected to the top wall of the crossbeam 2 at equal intervals. A flange 8 is fixedly connected to the inner side of the rotating shaft 606. A bearing 9 is installed on the inner wall of the flange 8.

[0037] Specifically, the crossbeam 2 is made of high-strength low-alloy structural steel, and its toughness and strength are enhanced by forging and heat treatment. The top of the crossbeam 2 is precision milled to form a flat installation reference surface. The positioning blocks 7 are fixed at equal intervals on this reference surface by welding. The positioning blocks 7 are used to accurately position the bridge components being hoisted, ensuring the accuracy and stability of the component installation position. The inner wall of the flange 8 is finely turned and ground to install the bearing 9, ensuring no relative slippage during rotation. The bearing 9 fits tightly with the inner wall of the flange 8, playing an important role in reducing friction and supporting radial and axial loads.

[0038] Working principle: Rotating the turntable 5011 drives the transmission double-acting screw 5012, causing the double-acting screw 5012 to rotate on the inner wall of the fixed block 502. During the rotation of the double-acting screw 5012, the rotating shaft 505 on its outer wall moves accordingly. The movement of the rotating shaft 505 further drives the clamping block 504 to rotate on the inner wall of the limiting plate 503. The rotation of the clamping block 504 realizes its opening and closing action, thereby effectively fixing the limiting block 601 on its inner wall. This operation method is not only convenient and efficient, but also forms a stable connection structure, effectively preventing fatigue cracks that are prone to occur in the structure when subjected to alternating loads for a long time. Especially in the lifting start and braking stages, this design can avoid the loosening of the connecting parts due to structural fracture, thereby preventing the disintegration of the rotating components and effectively avoiding the occurrence of lifting accidents.

[0039] The fixed ring 602 rotates on the bottom wall of the limiting block 601. This design enables the connecting assembly to rotate in all directions. Meanwhile, connecting plates 603 are installed on both sides of the outer wall of the fixed ring 602. The bottom of the connecting plate 603 is connected to the connecting block 605 by a fixed connection. The inner side of the connecting block 605 is connected to the second rotating shaft 606 by a rotating connection. The flange 8 is connected to the second rotating shaft 606. This design enables the connecting assembly to rotate at multiple angles. The damping rod 607 limits the rotation angle of the flange 8 and prevents the flange 8 from deflecting excessively, thereby avoiding collisions and imbalances caused by excessive deflection. In addition, the spring 6041 can effectively absorb the vibration generated by the flange 8 during rotation, prevent the structure from loosening due to vibration, further extend the service life of the structure, and ensure the stability and reliability of the entire system.

[0040] 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 rotating connection assembly for bridge hoisting, comprising a support column (1), characterized in that: A crossbeam (2) is fixedly connected to the top of the support column (1). A guide rail (3) is fixedly connected to the front side of the outer wall of the crossbeam (2). A boom (4) is slidably connected to the outer wall of the guide rail (3). A fixing mechanism (5) is installed at the bottom of the boom (4). The fixing mechanism (5) is used to improve the structural rigidity. A rotating mechanism (6) is installed at the bottom of the fixing mechanism (5). The rotating mechanism (6) is used to facilitate rotation. The fixing mechanism (5) includes a fixing block (502), which is fixedly connected to the bottom wall of the boom (4). Limiting plates (503) are fixedly connected to the left and right sides of the bottom wall of the fixing block (502). A clamping block (504) is rotatably connected to the inner side of the limiting plate (503). A driving assembly (501) is installed on the inner wall of the fixing block (502).

2. The rotating connection assembly for bridge hoisting according to claim 1, characterized in that: The drive assembly (501) includes a bidirectional lead screw (5012), which is rotatably connected to the bottom wall of the fixed block (502), and a turntable (5011) is fixedly connected to the rear end of the bidirectional lead screw (5012).

3. The rotating connection assembly for bridge hoisting according to claim 2, characterized in that: The outer wall of the bidirectional lead screw (5012) is threaded with a rotating shaft (505) on both the front and rear sides, and the rotating shaft (505) is rotatably connected to the inner wall of the clamping block (504).

4. The rotating connection assembly for bridge hoisting according to claim 1, characterized in that: The rotating mechanism (6) includes a limiting block (601), which is installed on the inner wall of the limiting plate (503). A fixing ring (602) is rotatably connected to the middle of the bottom wall of the limiting block (601). A connecting plate (603) is fixedly connected to the left and right sides of the outer wall of the fixing ring (602). A connecting block (605) is fixedly connected to the bottom of the connecting plate (603). A vibration damping component (604) is installed in the middle of the outer wall of the connecting block (605).

5. The rotating connection assembly for bridge hoisting according to claim 4, characterized in that: The vibration damping assembly (604) includes a spring (6041), which is installed in the middle of the outer wall of the connecting block (605), and a connecting rod (6042) is installed on the outer wall of the spring (6041).

6. The rotating connection assembly for bridge hoisting according to claim 4, characterized in that: A damping rod (607) is installed at the bottom end of the fixed ring (602), and a rotating shaft (606) is rotatably connected to the lower part of the outer wall of the connecting block (605). The damping rod (607) is connected to the rotating shaft (606).

7. The rotating connection assembly for bridge hoisting according to claim 1, characterized in that: A positioning block (7) is installed on the top of the crossbeam (2), and the positioning block (7) is fixedly connected to the top wall of the crossbeam (2) at equal intervals.

8. The rotating connection assembly for bridge hoisting according to claim 6, characterized in that: A flange (8) is fixedly connected to the inner side of the second rotating shaft (606), and a bearing (9) is installed on the inner wall of the flange (8).

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