Bridge cable damper

Abstract

The utility model discloses a bridge inhaul cable damper which comprises a bridge pier, upper beam bodies installed on the left side and the right side of the upper end of the bridge pier respectively, bridge supports installed between the bridge pier and the upper beam bodies respectively, and fixing assemblies arranged above the left side and the right side of the outer wall of the bridge pier and at the bottom of each upper beam body. The other side of the outer wall of each fixing assembly is detachably connected with a fixing base, a plurality of fixing holes are formed in the side penetrating through the outer wall of each fixing base, a plurality of fixing bolts are arranged on the other side of the outer wall of each fixing assembly, and the outer wall of each fixing bolt is in threaded connection with a fixing nut. A telescopic pull rod is rotationally connected between every two corresponding fixing bases on the same side of the pier in a matched mode. According to the utility model, the bridge can be limited and supported, and the transmission of vibration force can be slowed down to a certain extent, so that the bridge is prevented from being greatly damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge damping equipment, in particular to a bridge cable damper. Background Art

[0002] With the rapid development of transportation, bridges are used as a connecting tool to cross deep ditches, rivers, valleys and urban roads. According to different structural systems, bridges are beam bridges, arch bridges, rigid frame bridges and cable-supported bridges. Cable-supported bridges mainly transfer the weight of the bridge deck to the bridge piers through the cables. When vehicles travel on the bridge deck, vibrations are generated and transmitted to the bridge piers through the cables. In order to extend the service life of the bridge piers, dampers are usually installed at the connection between the cables and the bridge piers to block or absorb vibrations. There are various forms of bridge damage. Among them, the excessive relative displacement between the upper beam of the bridge and the piers is one of the main causes of bridge damage. The upper beam of the bridge may cause collisions and falling beams due to the relative displacement between adjacent beams.

[0003] At present, in order to limit the relatively large displacement between the beam and the pier, my country's bridges generally set connecting devices between the pier and the upper beam. The main connection forms are cable type and chain type. These connecting devices mainly rely on the damping generated by the device itself on the beam to hinder the relative displacement of the beam, thereby playing a limiting role. However, due to the large tensile stiffness, a large vibration force is transmitted, which not only causes excessive damage to the device itself, but also generates excessive damping force on the bridge, thereby causing excessive damage to the bridge. Utility Model Content

[0004] The utility model aims to provide a bridge cable damper, which can not only play a role of limiting support for the bridge, but also slow down the transmission of vibration force to a certain extent, thereby avoiding major damage to the bridge.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A bridge cable damper, comprising a bridge pier, an upper beam body respectively installed on the left and right sides of the upper end of the bridge pier, and a bridge support respectively installed between the bridge pier and the upper beam body, wherein a fixing assembly that can be cast inside the upper and left sides of the outer wall of the pier and the bottom of each upper beam body are provided, wherein the fixing assembly comprises a fixing plate, and a plurality of fixing rods arranged on one side of the outer wall of the fixing plate and distributed in an array, wherein a U-shaped fixing seat that cooperates with the fixing plate is detachably connected to the other side of the outer wall of each fixing plate, and a rotating shaft is rotatably connected between the left and right sides of the inner wall of each fixing seat;

[0007] The two corresponding fixed seats on the same side of the pier are both rotatably connected with a retractable pull rod which is sleeved on the outer wall of the rotating shaft. The pull rod includes a fixed tube with an opening at the upper end, a fixed ring connected to the inner wall of the fixed tube and close to its bottom, a positioning rod above the fixed ring and sliding along the length direction of the inner wall of the fixed tube, a limiting rod arranged at the lower end of the positioning rod and passing through the lower end of the fixing ring and slidably connected thereto, a limiting block arranged at the lower end of the limiting rod, and first shock-absorbing springs respectively arranged between the positioning rod and the upper end of the fixing ring and between the upper end of the limiting block and the lower end of the fixing ring, each first shock-absorbing spring being sleeved on the outer wall of the limiting rod.

[0008] By adopting the above technical solution, when using, when casting the bridge pier and the upper beam body, the fixing assembly is integrally cast at the corresponding position of the outer wall through the fixing rod. When the damper needs to be installed, the fixing seat is respectively installed on the fixing plate of the fixing assembly and fixed. When installing the fixing seat, the fixing seat on the bridge pier or the upper beam body is first installed, and then the pull rod is rotated on the rotating shaft of the upper fixing seat by a certain angle to install another fixing seat on the relative fixing assembly. When traffic is open or there is vibration force, the bridge support will absorb most of the vibration force to reduce the effect on the bridge pier, and the remaining vibration force will be transmitted to the pull rod when the upper beam body is displaced accordingly;

[0009] Since the pull rod is rotatably connected between the two fixed seats, when the upper beam body is relatively displaced, the positioning rod will slide in the fixed tube. At the same time, the first shock-absorbing spring on the upper part of the fixed ring will be squeezed to absorb the vibration force and prevent the vibration force from being transmitted to the bridge pier. When no vehicles pass, the upper beam body will undergo relative displacement to return to its initial state under the rebound action of the first shock-absorbing spring. At this time, the first shock-absorbing spring at the lower end of the fixed ring may prevent excessive rebound of the positioning rod under the limiting action of the limit block, and absorb the corresponding vibration force through the cooperation of the two first shock-absorbing springs. When the pull rod is working, the limit rod can ensure that the fixed rod slides smoothly in the fixed tube to a certain extent, thereby reducing the damage to the bridge.

[0010] The utility model is further configured as follows: one end of each fixing rod away from the fixing plate is arranged in an arc shape.

[0011] By adopting the above technical solution, the contact area between the fixing assembly and the bridge pier and the upper beam body can be increased and the fixing effect can be improved.

[0012] The utility model is further configured as follows: the arc-shaped end of each fixing rod is configured to face outwards.

[0013] The utility model is further configured as follows: a plurality of fixing holes distributed in an array are provided on one side of the outer wall of each fixing seat, a plurality of fixing bolts corresponding to the fixing holes are provided on the other side of the outer wall of each fixing plate, and a fixing nut threadably connected to the outer wall of each fixing bolt and used to fix the fixing seat is detachably connected.

[0014] By adopting the above technical solution, it is convenient to quickly install and disassemble the fixing seat, and it is convenient for the maintenance work of the staff.

[0015] The utility model is further configured as follows: a second damping spring is provided between the bottom of the inner wall of each fixed tube and the lower end of the corresponding limit block.

[0016] By adopting the above technical solution, the support and resilience of the positioning rod when it slides down can be increased, further reducing the damage to the bridge caused by vibration.

[0017] In summary, the utility model has the following beneficial effects:

[0018] Firstly, the utility model can not only play a role of limiting support for the bridge, but also slow down the transmission of vibration force to a certain extent, thus avoiding major damage to the bridge;

[0019] Secondly, the pull rod of the utility model can not only absorb the force caused by vibration on the bridge, but also fine-tune the position of the fixing seat when installing the fixing seat, so as to avoid the influence of the fixed support of the bridge due to the error between the fixing components;

[0020] Thirdly, the pull rod of the utility model can not only bear the downward pressure of the upper beam body, but also limit and fix the upper beam body to avoid large relative displacement and affect the stability of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is mainly used to show the position and connection relationship of each component;

[0023] Figure 3 It is mainly used to show the fixing components and fixing holes;

[0024] Figure 4 It is a structural schematic diagram of the pull rod of the utility model.

[0025] In the figure: 1. Bridge pier; 11. Upper beam; 12. Bridge support; 13. Fixing assembly; 14. Fixing plate; 15. Fixing rod; 16. Fixing bolt; 17. Fixing seat; 18. Rotating shaft; 19. Fixing hole; 2. Fixing nut; 21. Pull rod; 22. Fixing pipe; 23. Fixing ring; 24. Positioning rod; 25. Limiting rod; 26. Limiting block; 27. First shock-absorbing spring; 28. Second shock-absorbing spring. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example, see Figure 1-4A bridge cable damper comprises a pier 1, two upper beams 11 respectively installed on the left and right sides of the upper end of the pier 1, and two bridge supports 12 respectively installed between the pier 1 and the upper beams 11. A fixing assembly 13 which can be cast inside the pier 1 is arranged above the left and right sides of the outer wall of the pier 1 and at the bottom of each upper beam 11. The fixing assembly 13 comprises a fixing plate 14, a plurality of fixing rods 15 arranged on one side of the outer wall of the fixing plate 14 and distributed in an array. The end of each fixing rod 15 away from the fixing plate 14 is arc-shaped and arranged outward. A U-shaped fixing seat 17 cooperating with the fixing plate 14 is detachably connected to the other side of the outer wall of each fixing plate 14. A plurality of fixing holes 19 distributed in an array are opened on one side of the outer wall of each fixing seat 17. A plurality of fixing bolts 16 corresponding to the fixing holes 19 are arranged on the other side of the outer wall of each fixing plate 14. A fixing nut 2 threadedly connected to the fixing plate 17 and used to fix the fixing seat 17 is detachably connected to the outer wall of each fixing bolt 16.

[0031] A rotating shaft 18 is rotatably connected between the left and right sides of the inner wall of each fixing seat 17, and a retractable pull rod 21 which is sleeved on the outer wall of the rotating shaft 18 is rotatably connected between the two corresponding fixing seats 17 on the same side of the pier 1. The pull rod 21 includes a fixing tube 22 with an opening at the upper end, a fixing ring 23 connected to the inner wall of the fixing tube 22 and close to its bottom, a positioning rod 24 which is above the fixing ring 23 and slides along the length direction of the inner wall of the fixing tube 22, a limiting rod 25 which is arranged at the lower end of the positioning rod 24 and passes through the lower end of the fixing ring 23 and is slidably connected thereto, a limiting block 26 arranged at the lower end of the limiting rod 25, and two first shock-absorbing springs 27 which are respectively arranged between the positioning rod 24 and the upper end of the fixing ring 23 and between the upper end of the limiting block 26 and the lower end of the fixing ring 23. Each first shock-absorbing spring 27 is sleeved on the outer wall of the limiting rod 25, and a second shock-absorbing spring 28 is cooperatively arranged between the bottom of the inner wall of each fixing tube 22 and the lower end of the corresponding limiting block 26.

[0032] Usage: When using, when pouring the pier 1 and the upper beam 11, the fixing assembly 13 is integrally poured at the corresponding position of the outer wall through the fixing rod 15. Since the end of the fixing rod 15 away from the fixing plate 14 is arc-shaped and arranged outward, the fixing assembly 13 can be fixed between the pier 1 and the upper beam 11. When the damper needs to be installed, the fixing seat 17 is respectively installed on the fixing plate 14 of the fixing assembly 13 and fixed. When installing the fixing seat 17, first install the fixing seat 17 on the pier 1 or the upper beam 11, and let the fixing bolts 16 extends out of the fixing hole 19 on the fixing seat 17, and then the fixing nut 2 is threadedly connected to the fixing bolt 16, so as to fix the fixing seat 17 on the fixing plate 14 of the fixing component 13, and then the pull rod 21 is rotated a certain angle on the rotating shaft 18 of the upper fixing seat 17 to install another fixing seat 17 on the relative fixing component 13. When traffic is open or there is vibration force, the bridge support 12 will absorb most of the vibration force to reduce the effect on the pier 1, and the remaining vibration force will be transmitted to the pull rod 21 when the upper beam body 11 is displaced accordingly.

[0033] Since the pull rod 21 is rotatably connected between the two fixed seats 17, when the upper beam body 11 is relatively displaced, the positioning rod 24 will slide in the fixed tube 22. At the same time, the first shock-absorbing spring 27 and the second shock-absorbing spring 28 on the upper part of the fixed ring 23 will be squeezed to absorb the vibration force and prevent the vibration force from being transmitted to the pier 1. When no vehicle passes or the vibration is small, the upper beam body 11 will undergo relative displacement and return to its initial state under the rebound action of the corresponding first shock-absorbing spring 27 and the second shock-absorbing spring 28. At this time, the first shock-absorbing spring 27 at the lower end of the fixed ring 23 may prevent the positioning rod 24 from excessive rebound under the limiting action of the limit block 26, and at the same time, it can also limit the excessive upward displacement of the upper beam body 11. The corresponding vibration force is absorbed by the cooperation of the two first shock-absorbing springs 27 and the second shock-absorbing spring 28. When the pull rod 21 is working, the limit rod 25 can ensure that the fixed rod 15 slides smoothly in the fixed tube 22 to a certain extent, thereby reducing the damage to the bridge.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bridge cable damper, comprising a bridge pier (1), an upper beam body (11) respectively installed on the left and right sides of the upper end of the bridge pier (1), and a bridge support (12) respectively installed between the bridge pier (1) and the upper beam body (11), characterized in that: A fixing assembly (13) that can be cast inside the pier (1) is disposed above the left and right sides of the outer wall and at the bottom of each upper beam (11), the fixing assembly (13) comprising a fixing plate (14), a plurality of fixing rods (15) disposed on one side of the outer wall of the fixing plate (14) and distributed in an array, a U-shaped fixing seat (17) that cooperates with the fixing plate (14) is detachably connected to the other side of the outer wall, and a rotating shaft (18) is rotatably connected between the left and right sides of the inner wall of each fixing seat (17); A retractable pull rod (21) which is sleeved on the outer wall of the rotating shaft (18) and is rotatably connected between two corresponding fixing seats (17) on the same side of the pier (1), the pull rod (21) comprising a fixing tube (22) with an opening at the upper end, a fixing ring (23) connected to the inner wall of the fixing tube (22) and close to the bottom thereof, a positioning rod (24) which is above the fixing ring (23) and slides along the length direction of the inner wall of the fixing tube (22), a limiting rod (25) which is arranged at the lower end of the positioning rod (24) and passes through the lower end of the fixing ring (23) and is slidably connected thereto, a limiting block (26) which is arranged at the lower end of the limiting rod (25), and a first shock absorbing spring (27) which is respectively arranged between the positioning rod (24) and the upper end of the fixing ring (23) and between the upper end of the limiting block (26) and the lower end of the fixing ring (23), and each first shock absorbing spring (27) is sleeved on the outer wall of the limiting rod (25).

2. A bridge cable damper according to claim 1, characterized in that: One end of each fixing rod (15) away from the fixing plate (14) is arranged in an arc shape.

3. A bridge cable damper according to claim 2, characterized in that: The arc-shaped end of each fixing rod (15) is arranged outward.

4. A bridge cable damper according to claim 1, characterized in that: A plurality of fixing holes (19) distributed in an array are provided on one side of the outer wall of each fixing seat (17), and a plurality of fixing bolts (16) corresponding to the fixing holes (19) are provided on the other side of the outer wall of each fixing plate (14). The outer wall of each fixing bolt (16) is detachably connected with a fixing nut (2) threadedly connected thereto and used for fixing the fixing seat (17).

5. The bridge cable damper according to claim 1, characterized in that: A second shock-absorbing spring (28) is provided between the bottom of the inner wall of each fixed tube (22) and the lower end of the corresponding limiting block (26).

Images