Detachable swivel spherical hinge structure

Abstract

The utility model discloses a detachable swivel spherical hinge structure which comprises an upper connecting cover plate and a supporting truss, the lower portion of the upper connecting cover plate pre-buried in a bridge is fixedly connected with a lower connecting cover plate through a connecting bolt, and an upper spherical hinge is fixedly welded to the lower portion of the lower connecting cover plate through a radial stiffening plate; a lower sleeve is arranged in the center of the supporting truss, a groove is fixedly formed between the middle of each edge of the upper surface of the supporting truss and the lower sleeve, the end, away from the supporting truss, of the lower sleeve is sleeved with a lower spherical hinge, an upper sleeve is arranged in the center of the bottom of the upper spherical hinge, and the fixing device is dismantled after rotation is finished. All parts of the lower spherical hinge are symmetrically pulled away, the whole bridge settles to the design position under the action of self weight, system conversion is completed, the whole bridge falls to the positions above supports on the two sides of the pier top, the disadvantage that system conversion is difficult to complete through a conventional spherical hinge is effectively overcome through the detachable spherical hinge, and the scene application range of swivel construction is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge rotation technology, and particularly relates to a detachable rotation ball hinge structure. Background Technique

[0002] The ball hinge rotation technology is widely used in projects that cross existing lines, valleys, rivers and other inconvenient construction areas, and is commonly used in the rotation projects of bridges such as cable-stayed bridges, steel truss bridges, arch bridges, and T-frame bridges. With the research and development of China's bridge rotation technology and the continuous coverage of various types of rotation projects, the bridge rotation ball hinge technology has become increasingly mature, with the characteristics of saving hoisting costs, being safe, reliable, and having good integrity.

[0003] Existing rotations basically only have the rotation function and do not have the function of reducing the bridge elevation to land on the bearing after rotation, with poor applicability and unable to change the state of the beam body to be supported by the bearing after rotation.

[0004] The pier-top rotation is a more widely used construction scheme in modern bridge construction. It can not only reduce the rotation weight in the same project but also act together with the bearing in the construction of the hinge bearing bridge. When the beam body needs to change the structural state and complete the system conversion after being built, the detachable rotation ball hinge can effectively solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a detachable rotation ball hinge structure to solve the problems that existing rotations basically only have the rotation function, do not have the function of reducing the bridge elevation to land on the bearing after rotation, have poor applicability, and are unable to change the state of the beam body to be supported by the bearing after rotation.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A detachable rotation ball hinge structure includes an upper connection cover plate and a support truss. The lower part of the upper connection cover plate embedded in the bridge is fixedly connected to the lower connection cover plate through connection bolts, and an upper ball hinge is fixedly welded below the lower connection cover plate.

[0008] The support truss is integrally cast in concrete. A lower sleeve is provided at the central position of the support truss. The cross-section of the support truss is octagonal. Grooves are fixedly arranged between the middle position of each side of the upper surface of the support truss and the lower sleeve. A lower ball hinge is sleeved at one end of the lower sleeve away from the support truss. An upper sleeve is provided at the bottom center of the upper ball hinge, and the upper sleeve and the lower sleeve are rotated through a pin shaft.

[0009] As a further solution of the utility model: the lower spherical hinge is evenly divided into several fan-shaped parts, and sliding plates are fixedly arranged on the bottom surfaces of the parts of the lower spherical hinge, and the sliding plates can slide in the grooves.

[0010] As a further solution of the utility model: the parts of the lower spherical hinge are fixed into a whole through a fixing device, the fixing device includes a fastening plate and a fastening bolt, bolt holes are preset on the outer edges of the parts of the lower spherical hinge, and adjacent parts of the lower spherical hinge are fixed through the fastening plate and the fastening bolt.

[0011] As a further solution of the utility model: the upper spherical hinge is divided into two halves and fixed through a fastening plate and a fastening bolt.

[0012] As a further solution of the utility model: butter tetrafluoro powder is coated on the surface of the sliding plate and the inner side wall of the groove.

[0013] As a further solution of the utility model: the upper spherical hinge is in fit with the lower spherical hinge.

[0014] The beneficial effects of the utility model:

[0015] 1. By changing the structure of the rotating spherical hinge itself, the system conversion of the bridge structure is realized by the cooperation of the rotation and the bearing. With the use of the bearing, the height adjustment of the beam body can be realized without adding an additional jacking mechanism.

[0016] 2. The rotating spherical hinge can be repeatedly used for the rotating engineering of the same weight or specification. The core equipment can be reused, reducing the cost expenditure.

[0017] 3. The use mode and scope of the spherical hinge in the bridge rotation process are changed, enabling the spherical hinge to play a greater role in future bridge or other engineering construction. Description of the drawings

[0018] The following further describes the present utility model with reference to the drawings.

[0019] Figure 1 is the structural schematic diagram of the present utility model;

[0020] Figure 2 is the top view of the support truss of the present utility model;

[0021] Figure 3 is the plane structure diagram of the upper spherical hinge of the present utility model;

[0022] Figure 4 is the plane structure diagram of the lower spherical hinge of the present utility model;

[0023] Figure 5 is the enlarged structural schematic diagram of A of the present utility model;

[0024] In the figure: 11 is the upper connecting cover plate; 12 is the lower connecting cover plate; 2 is the connecting bolt; 3 is the upper spherical hinge; 4 is the fixing device; 41 is the fastening plate; 42 is the fastening bolt; 5 is the lower spherical hinge; 6 is the sliding plate; 7 is the groove; 8 is the lower sleeve; 81 is the pin shaft; 9 is the support truss; 10 is the upper sleeve. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figure 1 - Figure 2 As shown, the present invention is a detachable rotating spherical hinge structure, including an upper connecting cover plate 11 and a support truss 9. The lower part of the upper connecting cover plate 11 poured inside the bridge pier is fixedly connected to the lower connecting cover plate 12 through a connecting bolt 2. The upper spherical hinge 3 is fixedly welded to the lower part of the lower connecting cover plate 12 through a radial stiffening plate.

[0027] The lower part of the support truss 9 is poured into the concrete of the bridge pier. There are bearings on both sides of the bridge pier. A lower sleeve 8 is provided at the central position of the support truss 9. The lower part of the lower sleeve 8 needs to be poured into the concrete and serves as the support chassis of the rotating system together with the support truss 9. The support truss (9) is set to be octagonal or polygonal according to requirements. Grooves 7 are fixedly provided between the middle positions of each side of the upper surface of the support truss 9 and the lower sleeve 8. The number of the grooves 7 is the same as the number of sides of the support truss 9, and the grooves 7 are at the same height as the bearings on both sides of the bridge pier. A lower spherical hinge 5 is sleeved at one end of the lower sleeve 8 away from the support truss 9. An upper sleeve 10 is provided at the bottom center of the upper spherical hinge 3. The upper sleeve 10 is opposite to the opening of the lower sleeve 8, and is simultaneously sleeved on the pin shaft 81 and rotates through the pin shaft 81. The heights of the upper sleeve 10, the lower sleeve 8 and the pin shaft 81 are appropriate to facilitate being used as the central axis of rotation and not affecting the disassembly of the spherical hinge. The upper and lower spherical hinges as a whole are not poured. After the rotation is completed, they are disassembled and sunk to the designed height to complete the system conversion.

[0028] Please refer to Figure 2 - Figure 5As shown in the figure, the lower spherical hinge 5 is evenly divided into several fan-shaped parts. The number of divided blocks of the lower spherical hinge 5 is the same as the number of grooves 7. A sliding plate 6 is fixedly arranged on the bottom surface of each part of the lower spherical hinge 5. The sliding plate 6 can slide in the groove 7, so as to achieve the purpose of system conversion by disassembling itself after the rotation is completed. And when installing, the elevation of the bottom surface of the groove 7 should be equal to or slightly lower than the elevation of the concrete surface, that is, it is necessary to reach a state where the force can be directly transmitted to the concrete without affecting the sliding of the sliding plate 6. The key of the detachable spherical hinge lies in the connection between the groove 7 and the sliding plate 6. Before installing the lower spherical hinge 5, the inner surface of the groove 7 needs to be cleaned. Butter tetrafluoro powder is smeared on the bottom surface, side wall of the groove 7 and the surface of the sliding plate 6. After smearing, each block of the lower spherical hinge 5 is symmetrically installed, so that the sliding plate 6 of the lower spherical hinge 5 is completely fitted in the groove 7.

[0029] Each part of the lower spherical hinge 5 is fixed into a whole by a fixing device 4. The fixing device 4 includes a fastening plate 41 and fastening bolts 42. Bolt holes are preset on the outer edge of each part of the lower spherical hinge 5. Adjacent parts of the lower spherical hinge 5 are fixed by the fastening plate 41 and the fastening bolts 42 to ensure that the spherical hinge does not have relative displacement or deformation during rotation.

[0030] Both the upper and lower spherical hinges are detachable. The upper spherical hinge 3 is divided into two halves, and each half is provided with bolt holes. The corresponding lower connection cover plate 12 of the upper spherical hinge 3 is also divided into two parts. After the connection bolts 2 are removed, the upper spherical hinge 3 can be removed; after the lower spherical hinge 5 is installed, the two upper spherical hinges 3 are installed in sequence, and the two upper spherical hinges 3 are connected and fixed along the gap between every two upper spherical hinges 3 with the fastening plate 41 and the fastening bolts 42 to form a whole for the upper spherical hinge 3. When the lower spherical hinge 5 is pulled out, after the connection bolts 2 are removed, the upper spherical hinge 3 slides down along the lower sleeve 8 to the designed position.

[0031] The working principle of the present utility model: After the rotating spherical hinge rotates the bridge to the predetermined position, the horizontal movement of the beam body is locked. The fixing devices 4 on both sides of the lower spherical hinge 5 are symmetrically opened. After all the fixing devices 4 are unlocked, the sliding plates 6 below the lower spherical hinge 5 are simultaneously pulled out smoothly from the grooves 7. During the pulling-out process, the beam body slowly descends. After the whole beam body falls onto the bearings at both ends of the bridge, each lower spherical hinge 5 is completely pulled out. All the bolts are disassembled and removed one by one from the outside to the inside from the bottom of the lower connection cover plate 12 with a special tool. The upper spherical hinge 3 falls onto the pier, the fixing device 4 of the upper spherical hinge 3 is removed, and the upper spherical hinge 3 is removed piece by piece. Thus, the beam body falls onto the bearings and the system conversion is completed.

[0032] The above has described a detailed description of an embodiment of the present utility model, but the described content is only a preferred embodiment of the present utility model and cannot be considered as used to limit the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A detachable swivel ball joint structure, characterized in that: It comprises an upper connecting cover plate (11) and a supporting truss (9), wherein the lower part of the upper connecting cover plate (11) pre-buried in the bridge is fixedly connected to the lower connecting cover plate (12) via connecting bolts (2), and an upper ball joint (3) is welded and fixed to the lower part of the lower connecting cover plate (12); The support truss (9) is integrally cast in concrete, a lower sleeve (8) is provided at the center of the upper part of the support truss (9), the cross section of the support truss (9) is polygonal, a groove (7) is fixedly provided between the middle position of each side of the upper surface of the support truss (9) and the lower sleeve (8), a lower ball joint (5) is provided at one end of the lower sleeve (8) away from the support truss (9), an upper sleeve (10) is provided at the bottom center of the upper ball joint (3), and the upper sleeve (10) and the lower sleeve (8) are rotatable via a pin shaft (81); The lower ball joint (5) is evenly divided into a plurality of fan-shaped parts, and a slide plate (6) is fixedly provided on the bottom surface of each part of the lower ball joint (5), and the slide plate (6) can slide in the groove (7); The various parts of the lower ball joint (5) are fixed as a whole by a fixing device (4), the fixing device (4) comprising a fastening plate (41) and a fastening bolt (42), bolt holes are preset on the outer edges of the various parts of the lower ball joint (5), and adjacent parts of the lower ball joint (5) are fixed by the fastening plate (41) and the fastening bolt (42); The upper ball joint (3) is divided into two halves, which are fixed by a fastening plate (41) and a fastening bolt (42).

2. The detachable swivel ball joint structure according to claim 1, characterized in that: The surface of the slide plate (6) and the inner wall of the groove (7) are coated with butter polytetrafluoroethylene powder.

3. The detachable swivel ball joint structure according to claim 1, characterized in that: The upper ball joint (3) fits in with the lower ball joint (5).

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