An assembled damper for bridges
Patent Information
- Application Number
- CN202522032842.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-22
AI Technical Summary
[0003]传统阻尼器两端通常采用销轴连接或法兰板螺栓连接，安装时需要对连接件进行精确对位，这个过程需要重型机械设备辅助，对操作空间要求高，并且结构安装误差可能导致阻尼器耳板孔位与节点板孔位存在微小偏差
本实用新型中，将两块基座底板分别固定在桥梁底部与桥墩上，左侧的连接部通过连杆安装在桥梁底部的基座底板上，右侧的连接部插入两块挡板之间，在连接组件的作用下，实现连接部的快速拆装，相比于传统的销轴连接或法兰板螺栓连接方式，当粘滞阻尼器出现安装误差时，能快速拆卸后进行调整，有利于粘滞阻尼器的安装。
Smart Images
Figure CN224784699U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bridge damper installation technology, and in particular relates to a prefabricated damper for bridges. Background Technology
[0002] A viscous damper is a device that utilizes the principle of high frictional resistance generated when a viscous fluid passes through a narrow orifice at high speed. This converts the kinetic energy of structural vibration into heat energy and dissipates it, thereby reducing vibration. It is widely used in vibration control of engineering structures such as bridges and buildings. Its working principle is that when the structure vibrates, the piston in the damper reciprocates within the cylinder, causing the fluid to pass through a throttling orifice, thus generating viscous resistance. This converts the vibration energy into heat energy and dissipates it, achieving the purpose of vibration reduction.
[0003] Traditional dampers typically use pin connections or flange bolt connections at both ends. Installation requires precise alignment of the connectors, a process that necessitates heavy machinery, demands ample operating space, and is susceptible to minor deviations between the damper lug holes and node plate holes due to structural installation errors. When holes are misaligned, traditional connection methods often require on-site hole enlargement or the use of jacks for fine-tuning, sometimes even necessitating rework, increasing construction difficulty and uncertainty. Utility Model Content
[0004] The purpose of this invention is to provide a prefabricated damper for bridges, which has a flexible structure and allows for quick and easy assembly and disassembly of the viscous damper, thus facilitating its installation.
[0005] The bridge prefabricated damper includes a horizontally arranged viscous damper. Both ends of the viscous damper are provided with connecting parts. The end of the left connecting part is hinged with a connecting rod. The connecting rod is mounted on a base plate through a hinge seat. The right side of the viscous damper is vertically provided with a base plate. Two baffles are fixed on the left side wall of the base plate. The baffles are vertically parallel and arranged front and back. The two baffles are provided with connecting components that can be quickly disassembled and assembled with the right connecting part.
[0006] Furthermore, the connecting assembly includes a sleeve, the right end of which is horizontally fixed to the left side wall of the base plate. A plug rod is horizontally and independently inserted into the sleeve. The right end of the right connecting part has a socket for inserting the plug rod. A spring is installed between the base plate and the right end of the plug rod. In the spring's natural state, the left end of the plug rod is inserted into the socket.
[0007] Furthermore, a hanging ear is vertically fixed on the outer side wall of the connecting part. The hanging ear has an overall "L" shape structure. A fixing rod is horizontally fixed between the two baffles. A freely rotating outer tube is fitted on the outer side wall of the fixing rod. A hanging ring for suspending on the hanging ear is horizontally fixed on the outer side wall of the outer tube. The hanging ring has a "U" shape structure.
[0008] Furthermore, a central shaft is horizontally installed between the baffles, a gear is fitted on the central shaft, and a rack that meshes with the gear is fixed to the top of the insert rod.
[0009] Furthermore, a horizontal groove is provided on the inner side wall of the baffle, and the side wall of the right connecting part is independently inserted into the groove.
[0010] Furthermore, a wedge block is fixed on the wall of the insertion hole of the connecting part, and the wedge block and the left end of the insertion rod are wedge-shaped.
[0011] Compared with the prior art, the present invention has the following beneficial effects: In this invention, two base plates are fixed to the bottom of the bridge and the pier respectively. The connecting part on the left is installed on the base plate at the bottom of the bridge via a connecting rod, and the connecting part on the right is inserted between two baffles. Under the action of the connecting components, the connecting parts can be quickly disassembled and assembled. Compared with the traditional pin connection or flange bolt connection, when the viscous damper has an installation error, it can be quickly disassembled and adjusted, which is beneficial to the installation of the viscous damper. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 Front view of the center baffle; Figure 4 for Figure 1 A magnified view of a section at point A in the middle; The components in the diagram are named as follows: 1. Base plate; 2. Connecting rod; 3. Rotating shaft; 4. Connecting part; 5. Viscous damper; 6. Lifting ring; 7. Hanging lug; 8. Baffle; 9. Slide groove; 10. Insert rod; 11. Sleeve; 12. Spring; 13. Gear; 14. Outer tube; 15. Fixing rod; 16. Rack; 17. Central shaft; 18. Wedge block. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0014] Example 1 This embodiment describes a prefabricated damper for bridges, such as... Figures 1 to 4 As shown, it includes a horizontally arranged viscous damper 5. The viscous damper 5 is prior art, which has been explained in the background art and will not be described again. Both ends of the viscous damper 5 are provided with connecting parts 4. The connecting parts 4 are steel flanges welded to both ends of the viscous damper 5. The connecting parts 4 on the left side are installed on the base plate 1 on the left side, and the connecting parts 4 on the right side are inserted between the two baffles 8. The viscous damper 5 is then installed on the base plate 1. A connecting rod 2 is hinged to the end of the left connecting part 4. The lower end of the connecting rod 2 is hinged to the left end of the left connecting part 4, and the upper end of the connecting rod 2 is mounted on the base plate 1. The connecting rod 2 is mounted on the base plate 1 via the hinge seat. The base plate 1, the two base side plates, and the rotating shaft together form the hinge seat. The two base plates 1 are fixed to the bottom of the bridge and the pier respectively by seismic anchor bolts and positioning pins. The two base side plates are welded to the bottom of the base plate 1. The rotating shaft is fixed between the two base side plates. A through hole is opened at the upper end of the connecting rod 2, and the rotating shaft is installed in the through hole. The viscous damper 5 has a vertical base plate 1 on its right side. The base plate 1 on the right side is fixed to the pier by anchor bolts. The base plate 1 is made of Q355 steel plate. Two baffles 8 are fixed on the left side wall of the base plate 1. The baffles 8 are arranged vertically and parallel to each other. There are two baffles 8, which are fixed on the front and rear sides of the left side wall of the base plate 1 respectively. The right ends of the baffles 8 are fixed to the base plate 1 by welding and connected to the pier. The right end of the sleeve 11 is horizontally fixed to the left side wall of the base plate 1. A rod 10 is horizontally and independently inserted into the sleeve 11. The sleeve 11 is horizontally fixed to the base plate 1, and the rod 10 is horizontally inserted into the sleeve 11 and slides left and right along the length of the sleeve 11. The right end of the right connecting part 4 has a socket for inserting the rod 10. The socket is located on the right side wall of the connecting part 4. When the connecting part 4 is connected to the base plate 1, the rod 10 is inserted into the socket at the right end of the connecting part 4. A spring 12 is installed between the base plate 1 and the right end of the rod 10. The left end of the spring 12 is fixed to the right side wall of the rod 10, and the right end is fixed to the left side wall of the base plate 1. In the natural state of the spring 12, the left end of the rod 10 is inserted into the socket. Inside, the elastic force provided by the spring 12 makes the insertion rod 10 tightly inserted into the insertion hole of the connecting part 4; this section as a whole constitutes a connecting assembly that can be quickly disassembled and assembled with the right connecting part 4. When using the connecting assembly, insert the right end of the connecting part 4 between the two baffles 8, align the insertion hole of the right end of the connecting part 4 with the insertion rod 10, move the viscous damper 5 to the left to the designated position, and the connecting part 4 pushes the insertion rod 10 to deform the spring 12. The reaction force generated by the spring 12 presses the insertion rod 10 tightly into the insertion hole; of course, the connecting assembly can also fix a limiting sleeve at the left end of the sleeve 11 and a stop block that matches the limiting sleeve at the right end of the insertion rod 10 to prevent the spring 12 from pushing the insertion rod 10 excessively and to prevent the insertion rod 10 from falling out of the sleeve 11.
[0015] Working principle: The base plate 1 is hoisted to the pier position. A cross-shaped positioning line is set on the base plate 1, aligned with the bridge design axis to ensure that the installation error meets the specification requirements. It is then fixed with seismic anchor bolts. The anchor bolt arrangement can be adjusted according to the site conditions. The pre-embedded depth should not be less than 30cm to ensure pull-out resistance. Under the guidance of the slide 9, the connecting part 4 at the right end of the viscous damper 5 is inserted between the two baffles 8. The insertion hole at the right end of the connecting part 4 is aligned with the insertion rod 10. The connecting part 4 moves to the left to push the insertion rod 10 into the sleeve 11. After the spring 12 is deformed by the force, it pushes the insertion rod 10 tightly into the insertion hole. After the insertion rod 10 is inserted into the bottom of the insertion hole, it squeezes the wedge block 18 to deform, improving the stability of the insertion rod 10 after insertion. Qualitatively, when the connecting part 4 moves to the right, it drives the hanging ear 7 to move to the left. Rotate the outer tube 14 and the lifting ring 6 to hang the lifting ring 6 on the hanging ear 7. The connecting part 4 is pushed to the left by the spring 12, so that the connecting part 4 is fixed inside the two baffles 8. When the connecting part 4 needs to be disassembled, the central shaft 17 is rotated to drive the gear 13 to rotate counterclockwise. Through the meshing of the rack 16 and the gear 13, the insertion rod 10 is pushed to the left into the sleeve 11. The insertion rod 10 is taken out and the insertion hole contacts the locking of the connecting part 4, thus completing the disassembly of the connecting part 4. The connecting part 4 at the left end of the viscous damper 5 is hinged to the connecting rod 2. The connecting rod 2 is inserted and fixed on the base plate 1 at the bottom of the bridge, thus completing the installation of the viscous damper 5.
[0016] Example 2 This embodiment further illustrates the technology, such as Figures 1 to 4 As shown, a hanging ear 7 is vertically fixed on the outer side wall of the connecting part 4. The hanging ear 7 has an overall "L" shape structure. The vertical section of the hanging ear 7 is vertically fixed on the side wall of the connecting part 4, and the horizontal end of the hanging ear 7 is located at the top of the connecting part 4 and is parallel to the connecting part 4. A fixing rod 15 is horizontally fixed between the two baffles 8. The front end of the fixing rod 15 is fixed to the rear side wall of the front baffle 8, and the rear end is fixed to the front side wall of the rear baffle 8. The two ends of the fixing rod 15 are welded to the two baffles 8. A freely rotating outer tube 14 is fitted on the outer wall of the fixed rod 15. The outer tube 14 is located between two baffles 8. The outer tube 14 is fitted on the outer wall of the fixed rod 15 and rotates around the fixed rod 15. A hanging ring 6 for suspending on the hanging lug 7 is horizontally fixed on the outer wall of the outer tube 14. The hanging ring 6 has a "U" shaped structure. Both ends of the hanging ring 6 are fixed on the outer tube 14. When the outer tube 14 rotates, it drives the hanging ring 6 to rotate together. When the hanging ring 6 rotates to the right, the hanging ring 6 is fastened in the hanging lug 7, fixing the connecting part 4 in the baffle 8.
[0017] In this embodiment, when the insertion rod 10 is inserted into the insertion hole of the connecting part 4, the connecting part 4 is moved to the right, causing the hanging ear 7 to move towards the baffle 8. The spring 12 is compressed by force, the hanging ring 6 is rotated, and the hanging ring 6 is hung on the hanging ear 7. The connecting part 4 is released, and the spring 12 deforms and generates a thrust that pushes the connecting part 4 to the left. The hanging ring 6 is hung on the vertical section of the hanging ear 7, fixing the connecting part 4 inside the baffle 8.
[0018] In this embodiment, the hanging ears 7 and the lifting rings 6 can be set as two sets. The two hanging ears 7 are fixed on the upper and lower side walls of the connecting part 4 respectively, and the two lifting rings 6 are fixed on the upper and lower sides of the baffle 8 respectively. By connecting the two sets of hanging ears 7 and the lifting rings 6, the stability of the connecting part 4 fixed in the baffle 8 is improved.
[0019] In this embodiment, a pressure sensor with an LED display can also be installed at the contact point between the lifting ring 6 and the hanging ear 7. The pressure at the connection between the connecting part 4 and the baffle 8 can be observed visually through the pressure sensor. The pressure sensor with an LED display adopts IFM's PM series, such as PM1701, PM1801, PM1901, etc.
[0020] Example 3 This embodiment further illustrates the technology, such as Figures 1 to 4 As shown, a central shaft 17 is horizontally installed between the baffles 8. Both baffles 8 have through holes that connect the front and rear ends. The front and rear ends of the central shaft 17 are respectively inserted into the through holes of the two baffles 8. Bearings are installed in the through holes. The outer ring of the bearing is fixed to the hole wall of the through hole. The central shaft 17 is fixed in the inner ring of the bearing. The central shaft 17 is installed in the baffles 8 through the bearing. A gear 13 is mounted on the central shaft 17. When the central shaft 17 rotates, it drives the gear 13 to rotate as well. A rack 16 that meshes with a gear 13 is fixed to the top of the insertion rod 10. The rack 16 is fixed to the top of the insertion rod 10 and meshes with the gear 13. When the gear 13 rotates, it causes the insertion rod 10 to slide left and right.
[0021] In this embodiment, when the central shaft 17 is rotated counterclockwise, the central shaft 17 drives the gear 13 to rotate counterclockwise as well. Through the meshing of the rack 16 and the gear 13, the insertion rod 10 is pushed to the right, and the left end of the insertion rod 10 exits the insertion hole of the connecting part 4, thereby realizing the quick disassembly of the connecting part 4.
[0022] Example 4 This embodiment further illustrates the technology, such as Figure 1As shown, a sliding groove 9 is horizontally opened on the inner side wall of the baffle 8. The side wall of the right connecting part 4 is independently inserted into the sliding groove 9. A sliding groove 9 is horizontally opened on the rear side wall of the front baffle 8 and a sliding groove 9 is horizontally opened on the front side wall of the rear baffle 8. The front and rear side walls of the connecting part 4 are respectively inserted into the corresponding sliding grooves 9. The sliding grooves 9 play a limiting and guiding role for the connecting part 4, preventing the connecting part 4 from tilting when inserted into the baffle 8. At the same time, it can also stabilize the connecting part 4 and prevent the connecting part 4 from slipping off between the baffles 8 when the bridge vibrates.
[0023] Example 5 This embodiment further illustrates the technology, such as Figure 4 As shown, a wedge 18 is fixed on the wall of the insertion hole of the connecting part 4, and the wedge 18 is fixed on the wall of the insertion hole at the bottom. The wedge 18 and the left end of the insertion rod 10 are wedge-shaped. When the connecting part 4 is inserted into the bottom of the insertion hole, the wedge 18 and the insertion rod 10 are wedge-shaped. The wedge 18 is made of rubber. The end of the insertion rod 10 squeezes the wedge 18 to deform it, thereby improving the stability of the insertion rod 10 when it is inserted into the insertion hole.
Claims
1. A prefabricated damper for bridges, comprising a horizontally arranged viscous damper (5), wherein both ends of the viscous damper (5) are provided with connecting parts (4), and the end of the left connecting part (4) is hinged to a connecting rod (2), and the connecting rod (2) is mounted with a base plate (1) through a hinge seat, characterized in that: The viscous damper (5) has a base plate (1) vertically arranged on the right side. Two baffles (8) are fixed on the left side wall of the base plate (1). The baffles (8) are arranged vertically and parallel to each other. The two baffles (8) are equipped with connecting components that can be quickly disassembled and assembled with the right side connection part (4).
2. The prefabricated damper for bridges according to claim 1, characterized in that: The connecting assembly includes a sleeve (11), the right end of which is horizontally fixed to the left side wall of the base plate (1). A plug rod (10) is horizontally and independently installed inside the sleeve (11). The right end of the right connecting part (4) is provided with a socket for inserting the plug rod (10). A spring (12) is installed between the base plate (1) and the right end of the plug rod (10). In the natural state of the spring (12), the left end of the plug rod (10) is inserted into the socket.
3. The prefabricated damper for bridges according to claim 2, characterized in that: A hanging ear (7) is vertically fixed on the outer side wall of the connecting part (4). The hanging ear (7) is in an "L" shape. A fixing rod (15) is horizontally fixed between the two baffles (8). A freely rotating outer tube (14) is fitted on the outer side wall of the fixing rod (15). A hanging ring (6) for suspending on the hanging ear (7) is horizontally fixed on the outer side wall of the outer tube (14). The hanging ring (6) is in a "U" shape.
4. The prefabricated damper for bridges according to claim 2, characterized in that: A central shaft (17) is horizontally installed between the baffles (8), a gear (13) is fitted on the central shaft (17), and a rack (16) that meshes with the gear (13) is fixed to the top of the insert rod (10).
5. The prefabricated damper for bridges according to claim 2, characterized in that: A groove (9) is horizontally opened on the inner side wall of the baffle (8), and the side wall of the right connecting part (4) is independently inserted into the groove (9).
6. The prefabricated damper for bridges according to claim 2, characterized in that: A wedge (18) is fixed on the wall of the insertion hole of the connecting part (4), and the wedge (18) and the left end of the insertion rod (10) are wedge-shaped.