Bridge damping device
By introducing buffer springs and elastic materials into the bridge vibration-absorbing device, using the friction between the fixed rod and the bumps and the absorption effect of the elastic rod, the problem of large impact force of the vibration-absorbing ball in the prior art is solved, and the vibration-absorbing is significantly reduced The damage of the box improves the vibration reduction effect of the bridge.
Patent Information
- Application Number
- CN202420837228.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-22
AI Technical Summary
In existing bridge vibration damping devices, when the vibration damping ball swings back and forth at the upper end of the support rod, if the impact force is strong, the cushion pad will be difficult to effectively cushion, which can easily cause damage to the vibration damping box.
A bridge vibration damping device is designed, including a buffering spring and a first buffer pad in the connecting sleeve of the vibration damping box, which drives the fixed rod and the bump to generate friction and reduces the impact force by collision of the vibration damping ball, and uses elastic rod and high energy. The spring absorbs collision energy and reduces the impact on the vibration damping box.
It effectively reduces the impact force when the vibration damping ball and steel ball collide, reduces damage to the vibration damping box, improves the buffering effect, and protects the integrity of the vibration damping box.
Smart Images
Figure CN222206004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge vibration reduction, in particular to a bridge vibration reduction device. Background Art
[0002] Adding reinforced concrete cantilever beams is the simplest method of bridge widening and reconstruction, and can be used together with other bridge reinforcement methods. When the piers, abutments and foundations of the old bridge are intact and can meet the requirements of widening or even loading, the upper structure of the main load-bearing structure can be reasonably reinforced and loaded, and then the railings and sidewalk slabs on both sides can be removed, the original bridge deck pavement layer can be chiseled off, and the reinforced reinforced concrete bridge deck pavement layer can be re-poured. The sidewalk cantilever beams and roadway cantilever slabs can be added accordingly, and the sidewalk slabs and railings can be reinstalled, so as to achieve the purpose of widening the bridge.
[0003] The Chinese utility model with publication number CN212128819U proposes a vibration reduction device for bridge widening construction: the force generated by the vibration will eventually be transmitted to the vibration reduction box, so that the vibration reduction ball can swing back and forth at the upper end of the support rod. The vibration reduction ball can use the force to soften the rigidity, thereby offsetting or reducing the vibration generated by the bridge body. At the same time, it will also drive the steel ball to roll in the arc-shaped cavity, reduce the vibration force, and reduce the deflection difference between the new bridge body and the old bridge body.
[0004] However, the prior art still has shortcomings: the vibration-damping ball swings back and forth at the upper end of the support rod. Although a buffer pad is provided to prevent the vibration-damping ball and the steel ball from hitting the vibration-damping box, if the vibration-damping ball hits the vibration-damping box with great force, the buffer pad will not be able to achieve a good buffering effect and will cause damage to the vibration-damping box. Utility Model Content
[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a bridge vibration reduction device, which solves the problem that in the prior art, the vibration reduction ball swings back and forth at the upper end of the support rod. Although a buffer pad is provided to prevent the vibration reduction ball and the steel ball from hitting the vibration reduction box, if the vibration reduction ball hits the vibration reduction box with a strong force, the buffer pad is difficult to achieve a good buffering effect, which will cause damage to the vibration reduction box.
[0006] To achieve the above-mentioned purpose, the utility model proposes a bridge vibration reduction device, comprising: an old bridge body and a new bridge body, the two ends of the old bridge body and the new bridge body are close to each other, a vibration reduction box is arranged between the old bridge body and the new bridge body, a support rod is hingedly connected to the inner wall of the upper end of the vibration reduction box, a vibration reduction ball is hingedly connected to the lower end of the support rod, both sides of the inner wall of the vibration reduction box are fixedly connected to a connecting sleeve, a fixing rod is slidingly arranged inside the connecting sleeve, one end of the fixing rod is fixedly connected to a buffer spring, the other end of the buffer spring is fixedly connected to the inner wall of the connecting sleeve, and the other end of the fixing rod passes through one side of the connecting sleeve and is fixedly connected A first buffer pad is connected, and the upper and lower inner walls of the connecting sleeve are fixedly connected with a plurality of first protrusions, and the side surfaces of the fixing rod corresponding to the first protrusions are fixedly connected with a plurality of second protrusions, and the second protrusions abut against the first protrusions. An arc block is fixedly arranged inside the shock absorbing box and near the lower end, and an arc cavity is opened inside the arc block, and a plurality of groups of steel balls are arranged in the arc cavity. The inner walls on both sides of the connecting sleeve are fixedly connected with elastic rods, and the elastic rods are located in the arc cavity. The elastic rods are made of elastic material, and the other end of the elastic rods is fixedly connected with a second buffer pad.
[0007] As a further solution of the utility model: fixing frames are provided at the upper and lower ends of the old bridge body and the new bridge body, fixing bolts are provided at both ends of the fixing frames, the fixing frames are fixedly connected to the old bridge body and the new bridge body through the fixing bolts, two vibration damping plates are fixedly connected between the two fixing frames, the old bridge body and the new bridge body are tightly attached to the corresponding vibration damping plates, and a number of elastic steel plates are fixedly connected to the side where the two vibration damping plates are close to each other.
[0008] As a further solution of the utility model: a vibration-damping spring is fixedly arranged inside the elastic steel plate, one end of the elastic steel plate is fixedly connected to an energy-absorbing damper, a vibration-damping box is fixedly connected between the multiple energy-absorbing dampers, a connecting rod is fixedly arranged between the upper and lower ends of the two vibration-damping plates, both ends of the connecting rod are fixedly connected to high-energy springs, and one end of the high-energy spring away from the connecting rod is fixedly connected to the vibration-damping plate.
[0009] As a further solution of the utility model: a cavity is arranged inside the vibration damping box, a hinge is arranged on the inner wall of the upper end of the vibration damping box, and a support rod is hinged on the hinge.
[0010] As a further solution of the utility model: the interior of the connecting sleeve is hollow.
[0011] As a further solution of the utility model: a limiting rod is arranged on the inner side of the buffer spring, and one end of the limiting rod is fixedly connected to the inner wall of the connecting sleeve.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. When the vibration-damping ball swings back and forth, it will collide with the first buffer pad, and the first buffer pad will drive the fixing rod to move toward the inner direction of the connecting sleeve. The second protrusion and the first protrusion will move relative to each other and generate friction, which will reduce the transmission of the collision force, and then the buffer spring will buffer and reduce the impact force, thereby reducing the damage to the vibration-damping box.
[0014] 2. When the steel ball rolls, it will collide with the second buffer pad, which will buffer the collision force and then transmit the collision force to the elastic rod. The elastic rod can absorb the impact energy of the collision force and reduce the impact degree of the collision force, thereby reducing the impact on the shock absorber box. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a structural schematic diagram of the vibration damping box of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the connecting sleeve of the utility model.
[0018] In the figure: 1. old bridge body; 2. new bridge body; 3. fixing frame; 4. vibration-damping plate; 5. elastic steel plate; 6. energy-absorbing damper; 7. vibration-damping box; 8. hinge; 9. support rod; 10. vibration-damping ball; 11. arc block; 12. arc cavity; 13. steel ball; 14. fixing bolt; 15. connecting sleeve; 16. vibration-damping spring; 17. first buffer pad; 18. high-energy spring; 19. connecting rod; 20. fixing rod; 21. first protrusion; 22. second protrusion; 23. buffer spring; 24. limit rod; 25. second buffer pad; 26. elastic rod. DETAILED DESCRIPTION
[0019] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.
[0020] like Figure 1-3 As shown, the bridge vibration reduction device includes: an old bridge body 1 and a new bridge body 2. The two ends of the old bridge body 1 and the new bridge body 2 are close to each other. The upper and lower ends of the old bridge body 1 and the new bridge body 2 are both provided with fixing frames 3. Both ends of the fixing frames 3 are both provided with fixing bolts 14. The fixing frames 3 are fixedly connected to the old bridge body 1 and the new bridge body 2 through the fixing bolts 14.
[0021] Two vibration-damping plates 4 are fixedly connected between the two fixing frames 3. The old bridge body 1 and the new bridge body 2 are closely attached to the corresponding vibration-damping plates 4. A plurality of elastic steel plates 5 are fixedly connected to the sides of the two vibration-damping plates 4 that are close to each other.
[0022] A damping spring 16 is fixedly arranged inside the elastic steel plate 5, and the damping spring 16 can buffer the vibration of the bridge body. An energy-absorbing damper 6 is fixedly connected to one end of the elastic steel plate 5, and a damping box 7 is fixedly connected between multiple energy-absorbing dampers 6.
[0023] A connecting rod 19 is fixedly arranged between the upper and lower ends of the two vibration damping plates 4, and high-energy springs 18 are fixedly connected to both ends of the connecting rod 19. One end of the high-energy spring 18 away from the connecting rod 19 is fixedly connected to the vibration damping plate 4. The high-energy spring 18 is used to perform certain vibration damping and buffering, thereby enhancing the vibration damping function of the bridge.
[0024] The damping box 7 has a cavity inside, a hinge 8 is provided on the inner wall at the upper end of the damping box 7, a support rod 9 is hinged on the hinge 8, a damping ball 10 is hinged on the lower end of the support rod 9, and connecting sleeves 15 are fixedly connected to the inner walls on both sides of the damping box 7.
[0025] In order to prevent the damping ball 10 from hitting the inner wall of the damping box 7 during the back and forth swinging process, the interior of the connecting sleeve 15 is hollow, and a fixing rod 20 is slidably arranged inside the connecting sleeve 15, one end of the fixing rod 20 is fixedly connected to a buffer spring 23, the other end of the buffer spring 23 is fixedly connected to the inner wall of the connecting sleeve 15, and the other end of the fixing rod 20 passes through one side of the connecting sleeve 15 and is fixedly connected to a first buffer pad 17.
[0026] The upper and lower inner walls of the connecting sleeve 15 are fixedly connected with a plurality of first protrusions 21, and the sides of the fixing rod 20 corresponding to the first protrusions 21 are fixedly connected with a plurality of second protrusions 22, the second protrusions 22 abut against the first protrusions 21, and the second protrusions 22 and the first protrusions 21 can move relative to each other and generate friction.
[0027] When continuous vibration is generated after multiple vehicles pass over the old bridge body 1 and the new bridge body 2, the bridge body vibrates, and the shock-absorbing spring 16 can buffer the vibration of the bridge body, and then transfer the reduced force to the energy-absorbing damper 6 for reduction. The force generated by the vibration will eventually be transmitted to the shock-absorbing box 7, causing the shock-absorbing ball 10 to swing back and forth at the upper end of the support rod 9. The shock-absorbing ball 10 will collide with the first buffer pad 17 when swinging back and forth. The first buffer pad 17 drives the fixing rod 20 to move toward the inner direction of the connecting sleeve 15, and the second protrusion 22 moves relative to the first protrusion 21 and generates friction, thereby reducing the conduction of the collision force, and then buffered by the buffer spring 23 to reduce the impact force, thereby reducing the damage to the shock-absorbing box 7. Afterwards, the fixing rod 20 can return to its original position under the restoring force of the buffer spring 23.
[0028] A limit rod 24 is arranged inside the buffer spring 23 , one end of which is fixedly connected to the inner wall of the connecting sleeve 15 . The function of the limit rod 24 is to prevent the buffer spring 23 from twisting during movement and thus deviating from the set motion trajectory.
[0029] An arc block 11 is fixedly provided inside the vibration damping box 7 and near the lower end. Both ends of the arc block 11 are open. An arc cavity 12 is provided inside the arc block 11. A plurality of groups of steel balls 13 are provided in the arc cavity 12. Elastic rods 26 are fixedly connected to the inner walls on both sides of the connecting sleeve 15. The elastic rods 26 are located in the arc cavity 12. The elastic rods 26 are made of elastic material. The other end of the elastic rods 26 is fixedly connected to a second buffer pad 25.
[0030] When the force generated by the vibration is finally transmitted to the shock absorber box 7, it will drive the steel ball 13 to roll in the arc-shaped cavity 12. When the steel ball 13 rolls, it will collide with the second buffer pad 25. The second buffer pad 25 buffers the collision force and then transmits the collision force to the elastic rod 26. The elastic rod 26 can absorb the impact energy of the collision force and reduce the impact degree of the collision force, thereby reducing the impact on the shock absorber box 7.
[0031] Working principle:
[0032] When continuous vibration is generated after multiple vehicles pass over the old bridge body 1 and the new bridge body 2, the bridge body vibrates, and the shock-absorbing spring 16 can buffer the vibration of the bridge body, and then transfer the reduced force to the energy-absorbing damper 6 for reduction. The force generated by the vibration will eventually be transmitted to the shock-absorbing box 7, causing the shock-absorbing ball 10 to swing back and forth at the upper end of the support rod 9. The shock-absorbing ball 10 will collide with the first buffer pad 17 when swinging back and forth. The first buffer pad 17 drives the fixing rod 20 to move toward the inner direction of the connecting sleeve 15, and the second protrusion 22 moves relative to the first protrusion 21 and generates friction, thereby reducing the conduction of the collision force, and then buffered by the buffer spring 23 to reduce the impact force, thereby reducing the damage to the shock-absorbing box 7. Afterwards, the fixing rod 20 can return to its original position under the restoring force of the buffer spring 23.
[0033] When the force generated by the vibration is finally transmitted to the shock absorber box 7, it will drive the steel ball 13 to roll in the arc-shaped cavity 12. When the steel ball 13 rolls, it will collide with the second buffer pad 25. The second buffer pad 25 buffers the collision force and then transmits the collision force to the elastic rod 26. The elastic rod 26 can absorb the impact energy of the collision force and reduce the impact degree of the collision force, thereby reducing the impact on the shock absorber box 7.
[0034] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. A bridge vibration reduction device, characterized in that: include: An old bridge body (1) and a new bridge body (2), the two ends of the old bridge body (1) and the new bridge body (2) are close to each other, a vibration damping box (7) is arranged between the old bridge body (1) and the new bridge body (2), the inner wall of the upper end of the vibration damping box (7) is hinged with a support rod (9), the lower end of the support rod (9) is hinged with a vibration damping ball (10), the inner walls of both sides of the vibration damping box (7) are fixedly connected with a connecting sleeve (15), a fixing rod (20) is slidably arranged inside the connecting sleeve (15), one end of the fixing rod (20) is fixedly connected with a buffer spring (23), the other end of the buffer spring (23) is fixedly connected to the inner wall of the connecting sleeve (15), the other end of the fixing rod (20) passes through one side of the connecting sleeve (15) and is fixedly connected with a first buffer pad (17), the connecting sleeve (15) ) are fixedly connected to the upper and lower inner walls of the connecting sleeve (15), and the side surfaces of the fixing rod (20) corresponding to the first protrusions (21) are fixedly connected to the second protrusions (22), and the second protrusions (22) abut against the first protrusions (21). An arc block (11) is fixedly arranged inside the vibration damping box (7) and near the lower end. An arc cavity (12) is provided inside the arc block (11), and a plurality of groups of steel balls (13) are arranged in the arc cavity (12). The inner walls on both sides of the connecting sleeve (15) are fixedly connected to elastic rods (26), and the elastic rods (26) are located in the arc cavity (12). The elastic rods (26) are made of elastic material, and the other end of the elastic rods (26) is fixedly connected to a second buffer pad (25).
2. The bridge vibration reduction device according to claim 1, characterized in that: The upper and lower ends of the old bridge body (1) and the new bridge body (2) are both provided with fixing frames (3), both ends of the fixing frames (3) are provided with fixing bolts (14), the fixing frames (3) are fixedly connected to the old bridge body (1) and the new bridge body (2) via the fixing bolts (14), two vibration damping plates (4) are fixedly connected between the two fixing frames (3), the old bridge body (1) and the new bridge body (2) are closely attached to the corresponding vibration damping plates (4), and a plurality of elastic steel plates (5) are fixedly connected to the sides of the two vibration damping plates (4) close to each other.
3. The bridge vibration reduction device according to claim 2, characterized in that: A vibration-damping spring (16) is fixedly arranged inside the elastic steel plate (5), one end of the elastic steel plate (5) is fixedly connected to an energy-absorbing damper (6), a plurality of energy-absorbing dampers (6) are fixedly connected to a vibration-damping box (7), a connecting rod (19) is fixedly arranged between the upper and lower ends of the two vibration-damping plates (4), both ends of the connecting rod (19) are fixedly connected to a high-energy spring (18), and one end of the high-energy spring (18) away from the connecting rod (19) is fixedly connected to the vibration-damping plate (4).
4. The bridge vibration reduction device according to claim 1, characterized in that: A cavity is arranged inside the vibration damping box (7), a hinge (8) is arranged on the inner wall of the upper end of the vibration damping box (7), and a support rod (9) is hingedly connected to the hinge (8).
5. The bridge vibration reduction device according to claim 1, characterized in that: The interior of the connecting sleeve (15) is hollow.
6. The bridge vibration reduction device according to claim 1, characterized in that: A limiting rod (24) is arranged on the inner side of the buffer spring (23), and one end of the limiting rod (24) is fixedly connected to the inner wall of the connecting sleeve (15).