A modular multi-directional displacement expansion joint for bridges

Abstract

This utility model discloses a modular multi-directional displacement telescopic device for bridges, including a movable toothed plate and displacementrs. Multiple displacementrs are fixed to the top of the movable toothed plate, and multiple first frame rods are fixedly connected to the top of each displacementr. A first connecting rod is fixedly installed inside each first frame rod, and the first connecting rods fix and connect the first frame rods at multiple positions. A screw is fixedly installed inside the fixed toothed plate, and a second frame rod is fixed to one side of the screw. A second connecting rod is installed inside the second frame rod, and the second connecting rod fixes and connects the second frame rods. Triangular fixing components are installed on the first and second connecting rods. The two modules are manufactured with a fixed spacing and are integrated, avoiding the need for on-site machining of holes in steel plates and rubber sheets, thus shortening the installation time and improving the construction period.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge displacement expansion joints, specifically a modular multidirectional displacement expansion joint for bridges. Background Technology

[0002] Existing bridge expansion joints mostly employ on-site welding and assembly, with no pre-set spacing between modules, requiring individual support positioning, resulting in low installation efficiency. The positioning of holes in the steel and rubber plates relies on on-site drilling, which can easily lead to component misalignment due to insufficient precision. Furthermore, traditional designs lack multi-directional displacement compensation structures, making them prone to jamming and separation during lateral and longitudinal expansion and contraction of the bridge, affecting traffic safety and bridge durability. Therefore, there is an urgent need for a modular prefabricated bridge expansion joint that allows for pre-assembly of supports and plates, rapid on-site assembly, and multi-directional displacement support, to solve the problems of cumbersome installation, reliance on on-site processing for precision, and poor displacement adaptability of existing technologies. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a modular multi-directional displacement expansion joint for bridges, which can solve the problems in the prior art.

[0004] This utility model is achieved through the following technical solution: A modular multi-directional displacement telescopic device for bridges according to this utility model includes a movable toothed plate and a displacement device. Multiple displacement devices are fixed on the top of the movable toothed plate. Multiple first frame rods are fixedly connected to the top of the displacement devices. A first connecting rod is fixedly installed inside the first frame rod. The first connecting rod fixes the first frame rods at multiple positions. A screw is fixedly installed inside the fixed toothed plate. A second frame rod is fixed on one side of the screw. A second connecting rod is installed inside the second frame rod. The second connecting rod fixes the second frame rod. Triangular fixing components are installed on the first connecting rod and the second connecting rod.

[0005] In a further technical solution, a steel plate is fixedly installed on the upper side of the fixed toothed plate, and a rubber plate is fixedly installed on the upper side of the steel plate.

[0006] In a further technical solution, the movable toothed plate and the positioner are connected and fixed.

[0007] In a further technical solution, the first frame rod is connected and fixed to the positioner.

[0008] In a further technical solution, the first connecting rod is fixed at the middle position of the first frame rod, and the second connecting rod is disposed at the junction of the screw and the second frame rod.

[0009] In a further technical solution, the steel plate, rubber plate, and fixed toothed plate are connected and fixed together, and the screw, steel plate, rubber plate, and fixed toothed plate are also connected and fixed together.

[0010] In a further technical solution, the first frame rod has a U-shaped structure, and threaded lines are provided at both ends of the first frame rod.

[0011] A further technical solution includes a triangular fixing assembly comprising multiple uprights fixed to the outer surfaces of the first connecting rod and the second connecting rod, an inner hole seat fixed to the top of each upright, a threaded hole provided in the inner hole seat, and a bracket abutting against the upper end face of the inner hole seat. Multiple second anti-loosening bolts are provided in the bracket, and the second anti-loosening bolts pass through the bracket and are threadedly connected to the inner hole seat.

[0012] In a further technical solution, a third connecting rod and a fourth connecting rod are passed through and fixedly installed inside the second frame rod, and a fifth connecting rod is passed through and fixedly installed inside the first frame rod.

[0013] The beneficial effects of this utility model are as follows: First, the first frame rod and the screw are connected and fixed by the bracket, and the first frame rod is connected and fixed to the positioner and the moving toothed plate. The screw is connected and fixed to the steel plate, the rubber plate and the fixed toothed plate, so that the two modules are set with a fixed spacing and integrated at the factory. They can be placed in a packaging box for packaging and transportation. On-site, the third connecting rod, the fourth connecting rod and the fifth connecting rod are fixed by welding, so that the devices are connected and fixed side by side. The modular factory setting avoids the need for on-site welding and processing of the bracket, and the pre-installation of the steel plate and rubber plate avoids the need for on-site processing of holes in the steel plate and rubber plate, thus shortening the installation time of the device and improving the construction period.

[0014] Second, by using a modular design, the first connecting rod connects and fixes the first frame rod, and the second connecting rod connects and fixes the second frame rod, making the structure of the first frame rod and the screw more stable. Attached Figure Description

[0015] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of a modular multi-directional displacement telescopic device for bridges according to the present invention. Figure 2 for Figure 1 A schematic diagram of the structure of the device from below; Figure 3 for Figure 1 A schematic diagram of the structure of the device at the time of manufacture; Figure 4 for Figure 1 A schematic diagram of the structure after the components are installed side by side and welded together; Figure 5 for Figure 4A schematic diagram of the structure of the device from below; Figure 6 for Figure 1 Schematic diagram of the structure after the middle unit is cast and installed; In the figure, the components are: first connecting rod 11, first frame rod 13, first anti-loosening bolt 14, moving toothed plate 15, positioner 16, second frame rod 17, steel plate 18, rubber plate 19, fixed toothed plate 21, first anti-loosening nut 22, screw 23, third anti-loosening bolt 24, second connecting rod 25, stand 26, inner hole seat 27, second anti-loosening bolt 28, bracket 29, first stepped hole 31, second stepped hole 32, second anti-loosening nut 33, third connecting rod 51, fourth connecting rod 52, fifth connecting rod 53, casting body 62, trough 63, and V-shaped water guide channel 64. Detailed Implementation

[0017] like Figures 1-6 As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of the projection relationship are consistent in all directions: up, down, left, right, front, and back.

[0018] Embodiment 1: A modular multi-directional displacement telescopic device for bridges according to the present invention includes a movable toothed plate 15 and a displacement device 16. Multiple displacement devices 16 are fixedly mounted on the top of the movable toothed plate 15. Multiple first frame rods 13 are fixedly connected to the top of the displacement devices 16. A first connecting rod 11 is fixedly mounted inside the first frame rod 13. The first connecting rod 11 fixes the first frame rods 13 at multiple positions. A screw 23 is fixedly mounted inside the fixed toothed plate 21. A second frame rod 17 is fixed to one side of the screw 23. A second connecting rod 25 is mounted inside the second frame rod 17. The second connecting rod 25 fixes the second frame rod 17. Triangular fixing components are provided on the first connecting rod 11 and the second connecting rod 25.

[0019] Advantageously, a steel plate 18 is fixedly provided on the upper side of the fixed tooth plate 21, and a rubber plate 19 is fixedly provided on the upper side of the steel plate 18.

[0020] Advantageously, the movable toothed plate 15 and the positioner 16 are connected and fixed by fasteners. Specifically, multiple first stepped holes 31 are provided at the bottom of the movable toothed plate 15, and a first anti-loosening bolt 14 is provided in the positioner 16. The first anti-loosening bolt 14 passes through the positioner 16 and the movable toothed plate 15 and extends into the first stepped hole 31. Then, the positioner 16 is fixed to the movable toothed plate 15 by threaded connection between the anti-loosening nut and the first anti-loosening bolt 14.

[0021] Advantageously, the first frame rod 13 and the positioner 16 are connected and fixed by fasteners, and an anti-loosening nut is provided on the threaded connection of the first frame rod 13 to fix the first frame rod 13 and the positioner 16.

[0022] Advantageously, the first connecting rod 11 is fixed at the middle position of the first frame rod 13, and the second connecting rod 25 is disposed at the junction of the screw 23 and the second frame rod 17.

[0023] Advantageously, the steel plate 18, rubber plate 19, and fixed toothed plate 21 are connected and fixed using fasteners. The screw 23, steel plate 18, rubber plate 19, and fixed toothed plate 21 are also connected and fixed using fasteners. The bottom of the fixed toothed plate 21 is provided with multiple second-step holes 32. The upper surface of the rubber plate 19 is provided with multiple third anti-loosening bolts 24. The third anti-loosening bolts 24 pass through the rubber plate 19 and steel plate 18 and extend into the second-step holes 32. The outer surface of the third anti-loosening bolts 24 is threaded with corresponding anti-loosening nuts to ensure the steel plate 18 is securely fastened. Plate 18, rubber plate 19, and fixed toothed plate 21 are connected and fixed. The outer surface of screw 23 is threadedly fitted with a first anti-loosening nut 22 and a second anti-loosening nut 33. Screw 23 passes through steel plate 18 and rubber plate 19 and extends into the second stepped hole 32. The second anti-loosening nut 33 is located within the second stepped hole 32. After tightening the second anti-loosening nut 33 and the first anti-loosening nut 22, steel plate 18, rubber plate 19, and fixed toothed plate 21 are connected and fixed. The second anti-loosening nut 33 is threadedly connected and fixed to screw 23 and a third anti-loosening bolt 24. The first anti-loosening nut 22 is threadedly connected and fixed to screw 23.

[0024] Advantageously, the first frame rod 13 has a U-shaped structure, and threaded lines are provided at both ends of the first frame rod 13.

[0025] Advantageously, the triangular fixing assembly includes multiple supports 26 fixed to the outer surfaces of the first connecting rod 11 and the second connecting rod 25. An inner hole seat 27 is fixed to the top of the support 26, and a threaded hole is provided in the inner hole seat 27. It also includes a bracket 29, which is abutted against the upper end face of the inner hole seat 27. Multiple second anti-loosening bolts 28 are provided in the bracket 29. The second anti-loosening bolts 28 pass through the bracket 29 and are threadedly connected to the inner hole seat 27. When the bracket 29 is triangular, the number of supports 26 is three.

[0026] In Embodiment 2, advantageously, after the devices are placed side by side on site, they need to be welded to form an integrated structure. A third connecting rod 51 and a fourth connecting rod 52 pass through and are installed inside the second frame rod 17. The third connecting rod 51 and the fourth connecting rod 52 fix all the second frame rods 17 together by welding. The second connecting rod 25 is also welded to the second frame rod 17. A fifth connecting rod 53 passes through and is installed inside the first frame rod 13. The fifth connecting rod 53 fixes all the first frame rods 13 together by welding. The first frame rod 13 is also welded to the first connecting rod 11.

[0027] In Example 3, advantageously, a groove 63 is cut out at the bridge junction using a cutting machine. Then, the movable toothed plate 15, fixed toothed plate 21, steel plate 18, and rubber plate 19 of the welded device are disassembled. The remaining frame is then placed upside down in the groove 63. The bracket 29 is then disassembled and removed from the groove 63, or the bracket 29 is directly cut to detach it from the inner hole seat 27 and the upright seat 26. A reinforcing cage is then placed between the frame and the two end walls of the groove 63 and fixed thereto. Finally, a V-shaped water guide trough 64 is placed in the middle of the frame. Before the first pour, rubber sleeves are fitted onto the screw sections of the first anti-loosening bolt 14 and the screw rod 23. After the first pour is completed, the first anti-loosening bolt 14 and the screw rod 23 are exposed in the concrete, and the rubber sleeves are removed. Then, the moving toothed plate 15 and the positioner 16 are installed and fixed using the first anti-loosening bolt 14 and the anti-loosening nut. Then, the steel plate 18, the rubber plate 19, and the fixed toothed plate 21 are reconnected and fixed to the screw rod 23 using the first anti-loosening nut 22 and the second anti-loosening nut 33. Then, the second pour is performed to complete the pouring of the V-shaped water guide channel 64 and fill the gaps. For tightening the anti-loosening nuts, a torque wrench is used, and the anti-loosening nuts are tightened sequentially by tightening the diagonally opposite anti-loosening nuts.

[0028] After removing the anti-loosening nut in the first stepped hole 31, the movable toothed plate 15 can be separated from the positioner 16.

[0029] Similarly, by rotating the first anti-loosening nut 22 and the second anti-loosening nut 33, the first anti-loosening nut 22 and the second anti-loosening nut 33 move up and down at the threaded part of the screw 23, so that the steel plate 18, the rubber plate 19 and the fixed tooth plate 21 are connected and fixed. The distance between them relative to the bottom of the screw 23 can be adjusted so that the fixed tooth plate 21 is flush with the movable tooth plate 15.

[0030] After rotating the second anti-loosening bolt 28, the second anti-loosening bolt 28 is disengaged from the inner hole seat 27, and the bracket 29 can be removed. After the device is connected to form a frame, due to its inverted setting, a pad needs to be placed in the groove 63 in advance to give the second anti-loosening bolt 28 enough space to be removed. The second anti-loosening bolt 28 is first rotated to separate from the inner hole seat 27, and then the bracket 29 is pulled out and removed as a whole. Then the pad is removed.

[0031] When installing the fixing toothed plate 21, steel plate 18 and rubber plate 19 on the frame, first put the rubber plate 19, steel plate 18 and fixing toothed plate 21 on the outer surface of the screw 23, then let the screw 23 enter the first anti-loosening nut 22 and then connect it to the screw 23 through the threaded engagement of the second anti-loosening nut 33, so that the rubber plate 19, steel plate 18 and fixing toothed plate 21 can be connected and fixed.

[0032] The function of the third anti-loosening bolt 24 in connecting and fixing the steel plate 18, rubber plate 19 and fixing toothed plate 21 is to ensure that the three are fixedly connected at the factory, so as to facilitate modularization and direct delivery.

[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without creative effort should be included within the protection scope of this utility model; therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A modular multi-directional displacement telescopic device for bridges, comprising a movable toothed plate (15) and displacementrs (16), wherein a plurality of displacementrs (16) are fixed to the top of the movable toothed plate (15), characterized in that, The positioner (16) is fixedly connected to a plurality of first frame rods (13) at the top. A first connecting rod (11) is fixedly installed inside the first frame rod (13). The first connecting rod (11) fixes the first frame rods (13) at multiple positions. A fixed toothed plate (21) is provided on one side of the movable toothed plate (15). A screw (23) is fixedly installed inside the fixed toothed plate (21). A second frame rod (17) is fixed on one side of the screw (23). A second connecting rod (25) is provided inside the second frame rod (17). The second connecting rod (25) fixes the second frame rod (17). A triangular fixing component is provided on the first connecting rod (11) and the second connecting rod (25).

2. A modular multi-directional displacement expansion joint for bridges according to claim 1, characterized in that: A steel plate (18) is fixedly installed on the upper side of the fixed toothed plate (21), and a rubber plate (19) is fixedly installed on the upper side of the steel plate (18).

3. A modular multi-directional displacement expansion joint for bridges according to claim 1, characterized in that: The first frame rod (13) is connected and fixed to the positioner (16).

4. A modular multi-directional displacement expansion joint for bridges according to claim 1, characterized in that: The first connecting rod (11) is fixed at the middle position of the first frame rod (13), and the second connecting rod (25) is disposed at the junction of the screw (23) and the second frame rod (17).

5. A modular multi-directional displacement expansion joint for bridges according to claim 2, characterized in that: The steel plate (18), rubber plate (19) and fixed toothed plate (21) are connected and fixed, and the screw (23), steel plate (18), rubber plate (19) and fixed toothed plate (21) are connected and fixed.

6. A modular multi-directional displacement expansion joint for bridges according to claim 1, characterized in that: The first frame rod (13) has a U-shaped structure, and threaded lines are provided at both ends of the first frame rod (13).

7. A modular multi-directional displacement expansion joint for bridges according to any one of claims 1-6, characterized in that: The triangular fixing assembly includes multiple stands (26) fixed to the outer surfaces of the first connecting rod (11) and the second connecting rod (25). An inner hole seat (27) is fixed to the top of each stand (26). A threaded hole is provided in the inner hole seat (27). The assembly also includes a bracket (29). The bracket (29) is abutted against the upper end face of the inner hole seat (27). Multiple second anti-loosening bolts (28) are provided in the bracket (29). The second anti-loosening bolts (28) pass through the bracket (29) and are threadedly connected to the inner hole seat (27).

8. A modular multi-directional displacement expansion joint for bridges according to claim 7, characterized in that: A third connecting rod (51) and a fourth connecting rod (52) are fixedly installed inside the second frame rod (17), and a fifth connecting rod (53) is fixedly installed inside the first frame rod (13).

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