Bridge swivel spherical hinge structure

Abstract

The utility model discloses a bridge swivel spherical hinge structure, and relates to the technical field of bridge swivel. The device comprises a steel framework, a lower support is fixedly connected to the top of the steel framework, a lower spherical hinge is fixedly connected to the top of the lower support, a rotating groove is formed in the top of the lower spherical hinge, a center shaft is fixedly connected to the interior of the rotating groove, an upper support is arranged above the lower support, and an upper spherical hinge is fixedly connected to the bottom of the upper support; a rotating block is fixedly connected to the bottom of the upper spherical hinge, a center hole is formed in the bottom end of the rotating block and rotationally connected with the center shaft, a sealing mechanism is arranged above the lower support, and when the upper spherical hinge and the lower spherical hinge are sealed, the electric push rod is started to drive the abutting plate to be close to or away from the upper spherical hinge and the lower spherical hinge; the upper spherical hinge body and the lower spherical hinge body abut against each other through the abutting plate, so that external particles, silt and other impurities entering the spherical hinge can be reduced, abrasion and damage to spherical hinge parts are reduced, and the service life of the spherical hinge is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of bridge swivels, and in particular to a bridge swivel ball joint structure. Background Art

[0002] Bridge rotation technology is a relatively advanced technology in bridge construction that is worthy of promotion. Rotation construction is suitable for construction-restricted sites such as special river channels that are difficult to lift across deep valleys and rapids, and trunk roads with heavy traffic that cannot be diverted. It has the characteristics of saving lifting costs, being safe, reliable, having good integrity, and not affecting traffic.

[0003] After the construction of the main pier foundation and the lower cap is completed, the positioning steel frame of the lower ball joint needs to be installed on the main pier foundation, and it needs to be leveled and welded to the cap steel bar. Then use a crane to lift the lower ball joint into the position installed on the positioning steel frame. In order to ensure the flatness of the top surface, the difference between any two points should be within the specified numerical range. After the lower ball joint is installed, it is necessary to install a circular slideway on the top of the main pier foundation, and the entire slideway surface is required to be on the same horizontal line. Then, a steel center axis steel bar is set inside the lower ball joint, and a gap of more than two millimeters is left between the center axis and the lower ball joint to facilitate the rotation of the center axis. Then, the upper ball joint is welded to the upper support as a whole, and then hoisted and placed on the top of the lower ball joint. Combined with checking the relative rotation of the ball joint and locking the limit, the upper and lower matching surfaces of the ball joint are sealed with tape. It is strictly forbidden for mud or debris to enter the friction part of the ball joint. Then, the swivel traction system is installed on the top of the upper ball joint and the slideway, and finally the upper cap concrete is poured. At this point, the ball joint installation is completed.

[0004] After the ball joint is installed, most of the existing ones need to use tape or sealant to wrap the mating surfaces of the upper ball joint and the lower ball joint to prevent mud and debris from entering the friction part of the ball joint. However, after long-term use, the tape or sealant may age or be affected by external conditions, such as high temperature, chemicals, etc., resulting in a decrease in the sealing performance of the tape, causing mud, debris and moisture to enter the friction part of the ball joint, increasing wear and friction coefficient, thereby reducing the service life of the ball joint. Utility Model Content

[0005] The purpose of this application is to solve the problem that the tape may age or be affected by external conditions, such as high temperature, chemicals, etc., which may lead to a decrease in the sealing performance of the tape. This application provides a bridge swivel ball joint structure.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A bridge swivel ball joint structure comprises a steel frame, wherein the top of the steel frame is fixedly connected to a lower support, the top of the lower support is fixedly connected to a lower ball joint, a rotation groove is provided at the top of the lower ball joint, a center axis is fixedly connected inside the rotation groove, an upper support is arranged above the lower support, the bottom of the upper support is fixedly connected to an upper ball joint, the bottom of the upper ball joint is fixedly connected to a rotating block, a center hole is provided at the bottom end of the rotating block, the center hole is rotatably connected to the center axis, and a sealing mechanism is arranged above the lower support.

[0008] By adopting the above technical solution, the steel frame is leveled and welded to the base steel bars, and then the lower support is placed and welded to the steel frame by a crane, and then the lower ball joint is welded to the lower support. After the installation of the lower ball joint is completed, the center shaft is then installed in the rotating groove. Similarly, the upper support, upper ball joint and rotating block are fixed together, and a crane is used to align the upper ball joint with the lower ball joint so that the center shaft enters the center hole, thereby completing the ball joint installation process. The sealing mechanism can be used to seal the upper ball joint and the lower ball joint, reducing the risk of mud or debris entering the ball joint.

[0009] Furthermore, the sealing mechanism includes a plurality of threaded blocks arranged above the lower support, the top of the threaded block is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to an electric push rod, the end of the electric push rod away from the fixed block is fixedly connected to a movable plate, the side of the movable plate away from the electric push rod is fixedly connected to a resistance plate, the resistance plates are respectively in resistance with the upper support and the lower support, and a lifting member is arranged on the top of the lower support.

[0010] By adopting the above technical solution, the movable plate is driven to move on the top of the threaded block by starting the electric push rod, and the contact plate is fixedly connected to the movable plate, so that the contact plate is close to or away from the upper ball joint and the lower ball joint, and the upper ball joint and the lower ball joint are sealed by the contact plate, thereby reducing the entry of external particles, mud and other debris into the ball joint, reducing the wear and damage to the ball joint parts, and extending the service life of the ball joint.

[0011] Furthermore, the abutment plate is configured to be in an arc shape, and the abutment plate is respectively adapted to the shapes of the upper support and the lower support.

[0012] By adopting the above technical solution, the shapes of the abutment plate, the upper ball joint and the lower ball joint are more compatible.

[0013] Furthermore, a rubber pad is fixedly connected to one side of the abutment plate close to the upper support and the lower support, and the rubber pad is adapted to the shape of the abutment plate.

[0014] By adopting the above technical solution, the resistance plate can be more closely fitted to the upper ball joint and the lower ball joint by the elasticity of the rubber pad itself.

[0015] Furthermore, a slide groove is provided at the bottom of the threaded block, a slider is fixedly connected to the bottom of the movable plate, the slider is adapted to the shape of the slide groove, and the slider is slidably connected to the slide groove.

[0016] By adopting the above technical solution, the slider and the slide groove provide a guiding function for the movable plate.

[0017] Furthermore, fasteners are arranged between a plurality of the abutment plates, and the fasteners are composed of bolts and transverse plates.

[0018] By adopting the above technical solution, the integrity between the plurality of abutment plates is improved.

[0019] Furthermore, the lifting member includes a driving box fixedly connected to the top of the lower support, the inner bottom wall of the driving box is fixedly connected to a mounting seat, the top of the mounting seat is fixedly connected to a rotating motor, the output shaft of the rotating motor is fixedly connected to bevel gear one, one side of the bevel gear one is meshingly connected to bevel gear two, the inner bottom wall of the driving box is fixedly connected to a rotating column, bevel gear two is rotatably connected to the top of the rotating column, the top of the bevel gear two is fixedly connected to a threaded rod, the top of the driving box is fixedly connected to a vertical plate, the top of the threaded rod penetrates the driving box and is rotatably connected to the bottom of the vertical plate, the threaded rod is rotatably connected to the driving box, and the outer surface of the threaded rod is threadedly connected to the threaded block.

[0020] By adopting the above technical solution, the resistance plate can be driven to rise and fall by rotating the motor, and flexible adjustments can be made without disassembling or replacing parts.

[0021] Furthermore, an auxiliary rod is fixedly connected to the top of the driving box, the top end of the auxiliary rod passes through the threaded block and is fixedly connected to the bottom of the vertical plate, and the auxiliary rod is slidably connected to the threaded block.

[0022] By adopting the above technical solution, the auxiliary rod provides an additional support point for the threaded block, so that the threaded block moves more smoothly.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. In the present application, when sealing between the upper ball joint and the lower ball joint, the electric push rod is started to drive the contact plate to move closer to or away from the upper ball joint and the lower ball joint. When sealing, the upper ball joint and the lower ball joint are contacted by the contact plate, thereby reducing the entry of external particles, mud and other debris into the ball joint, reducing the wear and damage to the ball joint parts, and extending the service life of the ball joint.

[0025] 2. In the present application, when the height of the contact plate needs to be adjusted, the height of the contact plate can be adjusted by rotating the motor, and can be flexibly adjusted without disassembling or replacing parts, so that the tightness of the seal can be changed at any time according to needs, adapting to different working conditions or material requirements, and improving the convenience and efficiency of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the lower ball joint in this application;

[0027] Figure 2 It is a schematic diagram of the explosion structure of the lower ball joint in this application;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper ball joint in this application;

[0029] Figure 4 This application Figure 2 The enlarged structural diagram at A in the middle;

[0030] Figure 5 This application Figure 2 Enlarged structural diagram at B in the middle.

[0031] Description of reference numerals:

[0032] 1. Steel frame; 2. Lower support; 3. Lower ball joint; 4. Rotating groove; 5. Center axis; 6. Upper ball joint; 7. Rotating block; 8. Center hole; 10. Drive box; 11. Mounting seat; 12. Rotating motor; 13. Bevel gear one; 14. Bevel gear two; 15. Rotating column; 16. Threaded rod; 17. Vertical plate; 18. Auxiliary rod; 19. Threaded block; 20. Fixed block; 21. Electric push rod; 22. Moving plate; 23. Resistance plate; 24. Rubber pad; 25. Slide groove; 26. Fastener; 27. Upper support. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a bridge swivel ball joint structure.

[0035] Reference Figure 1 , Figure 2 and Figure 3A bridge swivel ball joint structure comprises a steel frame 1, a lower support 2 is fixedly connected to the top of the steel frame 1, a lower ball joint 3 is fixedly connected to the top of the lower support 2, a rotation groove 4 is provided at the top of the lower ball joint 3, a center axis 5 is fixedly connected to the inside of the rotation groove 4, an upper support 27 is arranged above the lower support 2, an upper ball joint 6 is fixedly connected to the bottom of the upper support 27, a rotating block 7 is fixedly connected to the bottom of the upper ball joint 6, a center hole 8 is provided at the bottom end of the rotating block 7, the center hole 8 is rotatably connected to the center axis 5, and a sealing mechanism is arranged above the lower support 2.

[0036] When installing the ball joint, first level the steel frame 1 and weld it to the base steel bars, then use a crane to place and weld the lower support 2 to the steel frame 1. After the installation is completed, it is necessary to measure whether the lower support 2 is level. After the adjustment is completed, weld the lower ball joint 3 to the lower support 2. After the lower ball joint 3 is installed, then install the center axis 5 into the rotating groove 4. Similarly, fix the upper support 27, the upper ball joint 6 and the rotating block 7 together, and use a crane to align the upper ball joint 6 with the lower ball joint 3 so that the center axis 5 enters the center hole 8. The center axis 5 connects the upper ball joint 6 and the lower ball joint 3. The rotation and bearing force between the upper ball joint 6 and the lower ball joint 3 are transmitted through the center axis 5 to ensure the normal rotation requirements of the ball joint device, thereby completing the ball joint installation process. The upper ball joint 6 and the lower ball joint 3 can be quickly sealed through the sealing mechanism, reducing the risk of mud or debris entering the friction part of the ball joint.

[0037] Reference Figure 2 and Figure 4 The sealing mechanism includes a plurality of threaded blocks 19 arranged above the lower support 2, the top of the threaded block 19 is fixedly connected to a fixed block 20, one side of the fixed block 20 is fixedly connected to an electric push rod 21, one end of the electric push rod 21 away from the fixed block 20 is fixedly connected to a moving plate 22, and a side of the moving plate 22 away from the electric push rod 21 is fixedly connected to a resistance plate 23, the resistance plate 23 is respectively in resistance with the upper support 27 and the lower support 2, and a lifting member is arranged on the top of the lower support 2.

[0038] The abutment plate 23 is configured to be in an arc shape, and the abutment plate 23 is adapted to the shapes of the upper support 27 and the lower support 2 respectively.

[0039] In addition, a rubber pad 24 is fixedly connected to one side of the abutment plate 23 close to the upper support 27 and the lower support 2 , and the shape of the rubber pad 24 matches that of the abutment plate 23 .

[0040] In addition, a slide groove 25 is provided at the bottom of the threaded block 19 , and a slider is fixedly connected to the bottom of the movable plate 22 . The slider is adapted to the shape of the slide groove 25 , and the slider is slidably connected to the slide groove 25 .

[0041] In addition, fasteners 26 are disposed between the plurality of abutment plates 23 , and the fasteners 26 are composed of bolts and transverse plates.

[0042] When sealing between the upper ball joint 6 and the lower ball joint 3, firstly, the electric push rod 21 is started to drive the movable plate 22 to move on the top of the threaded block 19, and the contact plate 23 is fixedly connected to the movable plate 22, so that the contact plate 23 is close to or away from the upper ball joint 6 and the lower ball joint 3. When sealing, the upper ball joint 6 and the lower ball joint 3 are contacted by the contact plate 23, thereby reducing the entry of external particles, mud and sand and other debris into the ball joint, reducing the wear and damage to the ball joint parts, and extending the service life of the ball joint. The contact plate 23 is set in an arc shape, so that the contact plate 23 can fit the outer wall of the upper ball joint 6 and the lower ball joint 3 more closely, thereby further improving the sealing performance. When the upper ball joint 6 is sealed with the lower ball joint 3, the rubber pad 24 has good elastic properties, can actively fit the outer wall of the ball joint, and form a closed sealing structure under pressure, providing a reliable sealing effect. When the movable plate 22 drives the contact plate 23 to move, the slider and the slide groove 25 are slidably connected, and the slider and the slide groove 25 provide a guiding effect for the movable plate 22, so that the movable plate 22 maintains the correct moving trajectory when moving. When the rubber pad 24 contacts the lower ball joint 3 and the upper ball joint 6, the two adjacent contact plates 23 can be fixed by the fastener 26. The adjacent contact plates 23 are fixed by the fastener 26, thereby providing a stable sealing effect and facilitating disassembly and maintenance.

[0043] Reference Figure 2 and Figure 5 The lifting member includes a driving box 10 fixedly connected to the top of the lower support 2, the inner bottom wall of the driving box 10 is fixedly connected with a mounting seat 11, the top of the mounting seat 11 is fixedly connected with a rotating motor 12, the output shaft of the rotating motor 12 is fixedly connected with a bevel gear 13, one side of the bevel gear 13 is meshed with a bevel gear 2 14, the bottom of the bevel gear 2 14 is rotatably connected with a rotating column 15, the bottom end of the rotating column 15 is fixedly connected to the inner bottom wall of the driving box 10, the inner bottom wall of the driving box 10 is fixedly connected with a rotating column 15, the bevel gear 2 14 is rotatably connected to the top of the rotating column 15, the top of the threaded rod 16 passes through the driving box 10 and is rotatably connected to the bottom of the vertical plate 17, the threaded rod 16 is rotatably connected to the driving box 10, and the outer surface of the threaded rod 16 is threadedly connected to the threaded block 19.

[0044] The top of the driving box 10 is fixedly connected with an auxiliary rod 18 , the top of the auxiliary rod 18 passes through the threaded block 19 and is fixedly connected to the bottom of the vertical plate 17 , and the auxiliary rod 18 is slidably connected to the threaded block 19 .

[0045] When the height of the resistance plate 23 needs to be adjusted, the rotating motor 12 is started, and the rotating motor 12 drives the bevel gear 13 to rotate. After the bevel gear 13 rotates, the bevel gear 2 14 rotates. The bevel gear 2 14 is threadedly connected with the threaded block 19, so that the threaded block 19 is raised and lowered on the outer surface of the threaded rod 16 in a horizontal line, and the lifting of the threaded block 19 causes the resistance plate 23 to rise and fall accordingly. The height of the resistance plate 23 is adjusted by the rotating motor 12, and can be flexibly adjusted without disassembling or replacing parts, so that the tightness of the seal can be changed at any time according to needs, to adapt to different working conditions or material requirements, and to improve the convenience and efficiency of operation. When the threaded block 19 moves, the auxiliary rod 18 provides an additional support point for the threaded block 19, so that the threaded block 19 moves more smoothly.

[0046] Working principle: the steel frame 1 is leveled and welded to the steel bars of the foundation, and then the lower support 2 is placed and welded to the steel frame 1 by a crane, and then the lower ball joint 3 is welded to the lower support 2. After the lower ball joint 3 is installed, the center axis 5 is then installed in the rotating groove 4. Similarly, the upper support 27, the upper ball joint 6 and the rotating block 7 are fixed together, and the upper ball joint 6 is aligned with the lower ball joint 3 by a crane so that the center axis 5 enters the center hole 8, thereby completing the ball joint installation process, and the moving plate 22 is driven to move on the top of the threaded block 19 by starting the electric push rod 21, and is fixedly connected to the moving plate 22 by the contact plate 23, so that the contact plate 23 is close to or away from the upper ball joint 6 and the lower ball joint 3, and the upper ball joint 6 and the lower ball joint 3 are sealed by the contact plate 23;

[0047] By starting the rotating motor 12, the rotating motor 12 drives the bevel gear 13 to rotate, and the rotation of the bevel gear 13 causes the bevel gear 2 14 to rotate. The bevel gear 2 14 is threadedly connected with the threaded block 19, so that the threaded block 19 is raised and lowered on the outer surface of the threaded rod 16 in a horizontal line, and the lifting of the threaded block 19 causes the resistance plate 23 to rise and fall accordingly. The height of the resistance plate 23 is adjusted by the rotating motor 12, and flexible adjustment can be made without disassembling or replacing parts.

Claims

1. A bridge swivel ball joint structure, comprising a steel frame (1), characterized in that: The top of the steel frame (1) is fixedly connected to a lower support (2), the top of the lower support (2) is fixedly connected to a lower ball joint (3), a rotating groove (4) is provided at the top of the lower ball joint (3), a center axis (5) is fixedly connected inside the rotating groove (4), an upper support (27) is arranged above the lower support (2), the bottom of the upper support (27) is fixedly connected to an upper ball joint (6), the bottom of the upper ball joint (6) is fixedly connected to a rotating block (7), a center hole (8) is provided at the bottom end of the rotating block (7), the center hole (8) is rotatably connected to the center axis (5), and a sealing mechanism is arranged above the lower support (2).

2. A bridge swivel ball joint structure according to claim 1, characterized in that: The sealing mechanism comprises a plurality of threaded blocks (19) arranged above the lower support (2); the top of the threaded block (19) is fixedly connected to a fixed block (20); one side of the fixed block (20) is fixedly connected to an electric push rod (21); one end of the electric push rod (21) away from the fixed block (20) is fixedly connected to a moving plate (22); one side of the moving plate (22) away from the electric push rod (21) is fixedly connected to a contact plate (23); the contact plate (23) contacts the upper support (27) and the lower support (2) respectively; and a lifting member is arranged on the top of the lower support (2).

3. The bridge swivel ball joint structure according to claim 2, characterized in that: The abutment plate (23) is configured to be in an arc shape, and the abutment plate (23) is respectively adapted to the shapes of the upper support (27) and the lower support (2).

4. The bridge swivel ball joint structure according to claim 2, characterized in that: A rubber pad (24) is fixedly connected to one side of the abutment plate (23) close to the upper support (27) and the lower support (2); the rubber pad (24) is adapted in shape to the abutment plate (23).

5. The bridge swivel ball joint structure according to claim 2, characterized in that: The bottom of the threaded block (19) is provided with a sliding groove (25), and the bottom of the movable plate (22) is fixedly connected with a sliding block, the shape of the sliding block matches that of the sliding groove (25), and the sliding block is slidably connected to the sliding groove (25).

6. The bridge swivel ball joint structure according to claim 2, characterized in that: A fastener (26) is provided between the plurality of the abutment plates (23), and the fastener (26) is composed of a bolt and a transverse plate.

7. The bridge swivel ball joint structure according to claim 2, characterized in that: The lifting member comprises a driving box (10) fixedly connected to the top of the lower support (2); the inner bottom wall of the driving box (10) is fixedly connected to a mounting seat (11); the top of the mounting seat (11) is fixedly connected to a rotating motor (12); the output shaft of the rotating motor (12) is fixedly connected to a bevel gear 1 (13); one side of the bevel gear 1 (13) is meshingly connected to a bevel gear 2 (14); the inner bottom wall of the driving box (10) is fixedly connected to a rotating column (15); the bevel gear 2 (14) is rotatably connected to the top of the rotating column (15); the top of the bevel gear 2 (14) is fixedly connected to a threaded rod (16); the top of the driving box (10) is fixedly connected to a vertical plate (17); the top of the threaded rod (16) passes through the driving box (10) and is rotatably connected to the bottom of the vertical plate (17); the threaded rod (16) is rotatably connected to the driving box (10); and the outer surface of the threaded rod (16) is threadedly connected to a threaded block (19).

8. The bridge swivel ball joint structure according to claim 7, characterized in that: An auxiliary rod (18) is fixedly connected to the top of the driving box (10); the top of the auxiliary rod (18) passes through the threaded block (19) and is fixedly connected to the bottom of the vertical plate (17); the auxiliary rod (18) is slidably connected to the threaded block (19).

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