Bridge expansion device with adjusting function

Abstract

The utility model relates to the technical field of bridge expansion devices, in particular to a bridge expansion device with an adjusting function, an external mounting rod is arranged between a first adjusting rod and a second adjusting rod, the first adjusting rod and the second adjusting rod are both movably inserted into the inner wall of the external mounting rod, and the outer wall of the first adjusting rod is in threaded connection with a first movable part; the outer wall of the second adjusting rod is in threaded connection with a second movable part, an elastic element is fixedly connected between the first movable part and the second movable part, the first movable part and the second movable part can be drawn close to each other by rotating the first adjusting rod and the second adjusting rod, and elastic potential energy of the elastic element can be enhanced along with drawing close of the first movable part and the second movable part. The problems that the rigidity and the bearing capacity of a bridge expansion device are limited, abrasion and fatigue damage are prone to occurring in long-term use, the pre-tightening force of the bridge expansion device is reduced, and therefore displacement changes of a bridge structure cannot be effectively coped with are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion and contraction devices, in particular to a bridge expansion and contraction device with an adjustment function. Background Art

[0002] During the use of bridges, the bridge deck will deform due to the force. In order to meet the requirements of bridge deck deformation, expansion joints are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge, and relevant devices for achieving bridge expansion and contraction are installed in the expansion joints. The bridge expansion device is an important part of the bridge structure, mainly used to adjust the displacement changes of the bridge structure. These displacement changes may cause distortion or cracks in the bridge structure, affecting the normal use and safety performance of the bridge.

[0003] Traditional bridge expansion devices usually use materials with large sliding modulus or shear modulus, such as rubber, polyester fabric, etc. These materials can provide a certain displacement adjustment capability. However, the stiffness and bearing capacity of bridge expansion devices are limited. They are prone to wear and fatigue damage after long-term use, resulting in a reduction in their own preload, making it impossible to effectively cope with the displacement changes of the bridge structure.

[0004] In view of the above problems, the utility model proposes a bridge expansion and contraction device with an adjustment function. Utility Model Content

[0005] The utility model aims to provide a bridge expansion device with an adjustment function, thereby solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge telescopic device with an adjustment function, comprising a connecting block A and a connecting block B, a telescopic reset body is fixedly connected between the connecting block A and the connecting block B, the outer walls of the connecting block A and the connecting block B are fixedly connected with a mounting ring, and the inner wall of the mounting ring is rotatably connected with a side column assembly;

[0007] The side connecting column assembly includes a first adjusting rod and a second adjusting rod rotatably connected to the inner wall of the mounting ring, an external mounting rod is arranged between the first adjusting rod and the second adjusting rod, the first adjusting rod and the second adjusting rod are both movably inserted into the inner wall of the external mounting rod, a first movable part is threadedly connected to the outer wall of the first adjusting rod, a second movable part is threadedly connected to the outer wall of the second adjusting rod, and an elastic element is fixedly connected between the first movable part and the second movable part.

[0008] Furthermore, the first adjusting rod and the second adjusting rod, as well as the first movable member and the second movable member are symmetrically distributed about the center of the elastic element.

[0009] Furthermore, the center of the elastic element is through-hole, and the diameters of the first adjustment rod and the second adjustment rod are both smaller than the inner diameter of the central through hole of the elastic element.

[0010] Furthermore, the diameters of the first movable member and the second movable member are larger than the inner diameter of the central through hole of the elastic element.

[0011] Furthermore, the outer walls of the first movable member and the second movable member are both fixedly connected with a slider body, and the first movable member and the second movable member are slidably connected to the inner wall of the outer mounting rod via the slider body.

[0012] Furthermore, installation grooves are provided at upper and lower ends of the first movable member and the second movable member, and blocking blocks are fixedly connected to inner walls of the installation grooves.

[0013] Furthermore, the barrier block is a component made of rubber material, and the interior of the barrier block is a hollow structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model proposes a bridge expansion and contraction device with an adjustment function. By rotating the first adjusting rod and the second adjusting rod, the first movable member and the second movable member are driven to move, so that the first movable member and the second movable member are brought closer to each other. The elastic potential energy of the elastic element will be enhanced as the first movable member and the second movable member are brought closer to each other, thereby avoiding wear and fatigue damage caused by long-term use, thereby reducing its own preload force. This solves the problem that the stiffness and bearing capacity of the bridge expansion and contraction device are limited, and wear and fatigue damage are prone to occur in long-term use, resulting in a reduction in its own preload force, thereby failing to effectively cope with the displacement changes of the bridge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall planar structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation structure of the side column assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the side column assembly of the utility model;

[0020] Figure 5 This is a schematic structural diagram of the first movable part of the utility model.

[0021] In the figure: 1. connecting block A; 2. connecting block B; 3. telescopic reset body; 4. mounting ring; 5. side column assembly; 51. first adjusting rod; 52. second adjusting rod; 53. external rod; 54. elastic element; 55. first movable part; 56. second movable part; 57. slider body; mounting groove; 59. blocking block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5 In order to solve the problem that the rigidity and bearing capacity of the bridge expansion device are limited, and it is easy to wear and fatigue damage in long-term use, resulting in a reduction in its own preload, and thus unable to effectively cope with the displacement change of the bridge structure, the following preferred technical solutions are provided:

[0024] A bridge telescopic device with an adjustment function comprises a connecting block A1 and a connecting block B2, a telescopic reset body 3 is fixedly connected between the connecting block A1 and the connecting block B2, the outer walls of the connecting block A1 and the connecting block B2 are fixedly connected with a mounting ring 4, the inner wall of the mounting ring 4 is rotatably connected with a side column assembly 5, the side column assembly 5 comprises a first adjusting rod 51 and a second adjusting rod 52 rotatably connected to the inner wall of the mounting ring 4, an outer mounting rod 53 is arranged between the first adjusting rod 51 and the second adjusting rod 52, the first adjusting rod 51 and the second adjusting rod 52 are both movably inserted into the inner wall of the outer mounting rod 53, the outer wall of the first adjusting rod 51 is threadedly connected with a first movable part 55, the outer wall of the second adjusting rod 52 is threadedly connected with a second movable part 56, and an elastic element 54 is fixedly connected between the first movable part 55 and the second movable part 56.

[0025] The first adjusting rod 51 and the second adjusting rod 52, as well as the first movable part 55 and the second movable part 56 are symmetrically distributed about the center of the elastic element 54. The center of the elastic element 54 is through-connected, and the diameters of the first adjusting rod 51 and the second adjusting rod 52 are smaller than the inner diameter of the central through hole of the elastic element 54. The diameters of the first movable part 55 and the second movable part 56 are larger than the inner diameter of the central through hole of the elastic element 54. The outer walls of the first movable part 55 and the second movable part 56 are fixedly connected with a slider body 57, and the first movable part 55 and the second movable part 56 are slidably connected to the inner wall of the outer rod 53 through the slider body 57.

[0026] The first movable member 55 and the second movable member 56 are provided with mounting grooves 58 at both upper and lower ends. The inner wall of the mounting groove 58 is fixedly connected with a blocking block 59 . The blocking block 59 is a component made of rubber material, and the interior of the blocking block 59 is a hollow structure.

[0027] Specifically, when the bridge is compressed and displacement changes occur, the telescopic reset body 3 is squeezed by the connecting block A1 and the connecting block B2, and the distortion of the bridge structure is reduced by using the telescopic reset ability of the telescopic reset body 3. At the same time, the first adjusting rod 51 and the second adjusting rod 52 are also compressed to drive the first movable member 55 and the second movable member 56 to squeeze the elastic element 54. The reaction force of the elastic element 54 assists the telescopic reset body 3 and improves its pressure-bearing ability.

[0028] The first adjusting rod 51 and the second adjusting rod 52 can be rotated to drive the first movable member 55 and the second movable member 56 to move, so that the first movable member 55 and the second movable member 56 can be brought closer to each other. The elastic potential energy of the elastic element 54 will be enhanced as the first movable member 55 and the second movable member 56 are brought closer to each other, thereby avoiding wear and fatigue damage caused by long-term use, thereby reducing its own preload force, and solving the problem that the rigidity and bearing capacity of the bridge expansion device are limited, and it is easy to wear and fatigue damage in long-term use, resulting in a reduction in its own preload force, thereby failing to effectively cope with the displacement change of the bridge structure;

[0029] When the first movable member 55 and the second movable member 56 squeeze the elastic element 54, the slider body 57 moves on the inner wall of the outer rod 53. At this time, the blocking block 59 will be squeezed by the inner wall of the outer rod 53, and its outer wall will be concave inward. The blocking block 59 will use its own elasticity to create a certain blocking force when the first movable member 55 and the second movable member 56 move. The blocking force can share the pressure on the elastic element 54, thereby increasing the service life of the device.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge expansion and contraction device with an adjustment function, comprising a connection block A (1) and a connection block B (2), wherein a expansion and contraction reset body (3) is fixedly connected between the connection block A (1) and the connection block B (2), and characterized in that: The outer walls of the connecting block A (1) and the connecting block B (2) are both fixedly connected with a mounting ring (4), and the inner wall of the mounting ring (4) is rotatably connected with a side column assembly (5); The side column assembly (5) comprises a first adjusting rod (51) and a second adjusting rod (52) which are rotatably connected to the inner wall of the mounting ring (4); an outer mounting rod (53) is arranged between the first adjusting rod (51) and the second adjusting rod (52); the first adjusting rod (51) and the second adjusting rod (52) are both movably inserted into the inner wall of the outer mounting rod (53); a first movable part (55) is threadedly connected to the outer wall of the first adjusting rod (51); a second movable part (56) is threadedly connected to the outer wall of the second adjusting rod (52); and an elastic element (54) is fixedly connected between the first movable part (55) and the second movable part (56).

2. The bridge expansion device with adjustment function according to claim 1, characterized in that: The first adjusting rod (51) and the second adjusting rod (52), as well as the first movable member (55) and the second movable member (56) are symmetrically distributed about the center of the elastic element (54).

3. The bridge expansion device with adjustment function according to claim 1, characterized in that: The center of the elastic element (54) is through-hole, and the diameters of the first adjustment rod (51) and the second adjustment rod (52) are both smaller than the inner diameter of the central through hole of the elastic element (54).

4. The bridge expansion device with adjustment function according to claim 3 is characterized in that: The diameters of the first movable member (55) and the second movable member (56) are larger than the inner diameter of the central through hole of the elastic element (54).

5. The bridge expansion device with adjustment function according to claim 1, characterized in that: The outer walls of the first movable member (55) and the second movable member (56) are both fixedly connected with a slider body (57), and the first movable member (55) and the second movable member (56) are slidably connected to the inner wall of the outer rod (53) via the slider body (57).

6. The bridge expansion device with adjustment function according to claim 5, characterized in that: The first movable member (55) and the second movable member (56) are both provided with mounting grooves (58) at the upper and lower ends, and the inner walls of the mounting grooves (58) are fixedly connected with blocking blocks (59).

7. The bridge expansion device with adjustment function according to claim 6, characterized in that: The barrier block (59) is a component made of rubber material, and the interior of the barrier block (59) is a hollow structure.

Images