A friction pendulum sliding support with adjustable friction force

Abstract

The present invention discloses a friction pendulum sliding support with adjustable friction force, which comprises: a support plate, the lower surface of the support plate is fixedly connected with an embedded box, the support plate is provided with a movable hole, the inner surface of the embedded box is slidably connected with a lifting plate, the upper surface of the lifting plate is fixedly connected with a resistance plate, the resistance plate is movably connected inside the movable hole, an oil filling pipe and an oil draining pipe are connected on the embedded box, a No. 1 solenoid valve is provided inside the oil filling pipe, a No. 2 solenoid valve is provided inside the oil draining pipe, and an oil filling device is provided on the outer surface of the embedded box. Through a displacement sensor and an oil filling device, when the shaking of the building is sensed, the oil filling device is controlled to fill oil into the embedded box, the greater the displacement, the less the amount of oil in the embedded box, and when there is no shaking, the oil is filled to full position, so that the friction between the resistance plate and the load-bearing column ensures the stability of the building.

Description

Technical Field

[0001] The invention relates to the technical field of sliding supports, and in particular to a friction pendulum sliding support with adjustable friction force. Background Art

[0002] At present, seismic isolation technology has been widely used in building structures. In order to improve the ability of building structures to resist external loads such as earthquakes, energy-absorbing components are often added to the structure. As the core of the seismic isolation solution, the performance of the energy dissipator directly affects the effect of seismic isolation.

[0003] Common shock-absorbing and energy-absorbing components include viscous dampers, friction dampers and energy-absorbing supports, and seismic isolation and energy-absorbing components include friction pendulums and seismic isolation pads. Friction dampers use the friction force in the opposite direction of sliding generated on the contact surface when two contacting objects are displaced relative to each other to convert the vibration energy of the building into internal energy dissipation. Friction pendulums avoid the characteristic period of earthquakes by extending the natural vibration period of the structure, thereby significantly reducing the seismic response of the structure. However, they cannot automatically adjust the friction force according to the intensity of the earthquake, resulting in a lack of obvious shock-absorbing effect. Summary of the invention

[0004] The object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a friction pendulum sliding support with adjustable friction force, comprising: a support plate, the lower surface of the support plate is fixedly connected to an embedded box, the support plate is provided with a movable hole, the inner surface of the embedded box is slidably connected to a lifting plate, the upper surface of the lifting plate is fixedly connected to a resistance plate, the resistance plate is movably connected inside the movable hole, the embedded box is connected to an oil filling pipe and an oil drain pipe, the oil filling pipe is provided with a No. 1 solenoid valve, the oil drain pipe is provided with a No. 2 solenoid valve, the outer surface of the embedded box is provided with an oil filling device, the oil filling device is connected to both the oil filling pipe and the oil drain pipe; the upper surface of the support plate is provided with a limiting device, the A shock absorbing device is slidably connected to the upper surface of the support plate, and the shock absorbing device is movably connected to the limit device and the resistance plate; a load-bearing column is fixedly connected to the upper surface of the shock absorbing device, and a limit structure is arranged on the upper surface of the load-bearing column, and a displacement sensor is fixedly connected to the outer surface of the load-bearing column, and the displacement sensor is electrically connected to the oil injection device, the No. 1 solenoid valve and the No. 2 solenoid valve; the oil injection device comprises: an oil storage tank, a No. 1 liquid pump is fixedly connected to the outer surface of the oil storage tank, and the output end of the No. 1 liquid pump is fixedly connected to the oil injection pipe, and a No. 2 liquid pump is fixedly connected to the outer surface of the oil storage tank, and the input end of the No. 2 liquid pump is fixedly connected to the oil discharge pipe; the displacement sensor is provided with a plurality of levels, and the control corresponding to each level is different.

[0005] According to a friction-adjustable friction pendulum sliding support provided by the present invention, the limiting device is specifically a limiting plate, and the limiting plate is provided with a limiting hole.

[0006] According to a friction-adjustable friction pendulum sliding support provided by the present invention, the shock absorbing device is specifically a damper and a spring, a positioning plate is provided on the damper, and the lower end of the spring is fixedly connected to the upper surface of the positioning plate.

[0007] According to a friction-adjustable friction pendulum sliding support provided by the present invention, the positioning plate is slidably connected to the support plate, and the positioning plate is movably connected inside the limiting hole.

[0008] According to a friction-adjustable friction pendulum sliding support provided by the present invention, the limiting structure includes: a steel cable, the steel cable passes through a load-bearing column, an embedded box, and a shock absorbing device, and one end of the steel cable is fixedly connected to the lower surface of the embedded box.

[0009] According to a friction-adjustable friction pendulum sliding support provided by the present invention, the other end of the steel cable passes through the load-bearing column and is located above the load-bearing column. The steel cable is slidably connected to the load-bearing column and the shock-absorbing device, and the outer surface of the steel cable is fixedly connected to a fixed plate.

[0010] According to a friction-adjustable friction pendulum sliding support provided by the present invention, a top spring is fixedly connected to the upper surface of the load-bearing column, and one end of the top spring away from the load-bearing column is fixedly connected to a fixed plate.

[0011] According to the friction-adjustable friction pendulum sliding support provided by the present invention, the displacement sensor has at least three levels.

[0012] Compared with the prior art, the friction force adjustable friction pendulum sliding support has the following beneficial effects:

[0013] (1) Dynamic friction adjustment: By detecting the shaking amplitude through the displacement sensor and adjusting the friction accordingly, it can flexibly respond to earthquake waves of different intensities and frequencies, ensuring that when an earthquake occurs, the system reduces friction and allows the shock absorber to play its maximum role. The dynamic adjustment of friction enables the shock absorber to maximize the absorption and dissipation of earthquake energy, reduce the impact on the building structure, and improve the overall seismic performance.

[0014] (2) Improving structural stability: When there is no earthquake or shaking, the bearing plate is filled with oil to increase friction, and the shock-absorbing device is fixed together to prevent the impact of small vibrations and ensure the stability of the building structure. For daily small shaking, such as wind vibration and human activities, it can provide a stable fixing effect and reduce unnecessary vibration impact.

[0015] (3) Automation and intelligent control: The combination of displacement sensors, solenoid valves and oil pumps enables fully automated control of the system without the need for human intervention, thus improving operational convenience and response speed. The system is set up with multiple levels and responds in grades according to actual displacement, which helps to more accurately adjust friction and ensure that earthquakes of all levels can be properly handled.

[0016] (4) Anti-slip limit: The design of the steel cable and pulley assembly can keep the steel cable in a vertical state during an earthquake, avoiding deformation in other directions and ensuring the stability of the limit function; the combination of the top spring and the fixed plate prevents the load-bearing column from sliding too violently, thereby protecting the stability and function of the entire shock-absorbing device.

[0017] (5) Multiple protection mechanisms: From high friction when fully oiled to dynamically adjusted friction, as well as the limit design of the steel cable and spring, multiple protection mechanisms improve the overall reliability and safety of the system and ensure the shock absorption effect; through precise friction adjustment and real-time monitoring, the risk of damage to buildings caused by earthquakes is effectively reduced, and the earthquake resistance level and safety performance of buildings are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 This is the overall structural diagram of the friction pendulum sliding support with adjustable friction force of the present invention;

[0020] Figure 2 It is a bottom view of the structure of the friction pendulum sliding support with adjustable friction force of the present invention;

[0021] Figure 3 It is a cross-sectional structural diagram of the friction force adjustable friction pendulum sliding support of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the oil injection device of the friction force adjustable friction pendulum sliding support of the present invention;

[0023] Figure 5 It is a cross-sectional bottom view of the structure of the friction pendulum sliding support with adjustable friction force of the present invention;

[0024] Figure 6 The invention is a friction force adjustable friction pendulum sliding support Figure 1 The enlarged picture at C in the middle;

[0025] Figure 7 The invention is a friction force adjustable friction pendulum sliding support Figure 5 Enlarged view of point E in the middle.

[0026] Legend:

[0027] 1. Support plate; 2. Embedded box; 3. Movable hole; 4. Lifting plate; 5. Resistance plate; 6. Oil filling pipe; 7. Oil drain pipe; 8. Solenoid valve No. 1; 9. Solenoid valve No. 2; 10. Load-bearing column; 11. Displacement sensor; 12. Oil storage tank; 13. Liquid pump No. 1; 14. Liquid pump No. 2; 15. Limit plate; 16. Limit hole; 17. Damper; 18. Spring; 19. Positioning plate; 20. Steel cable; 21. Fixed plate; 22. Top spring. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] Reference Figure 1-7 The embodiment of the present invention is a friction pendulum sliding bearing with adjustable friction force, which includes: a bearing plate 1, an embedded box 2 is fixedly connected to the lower surface of the bearing plate 1, a movable hole 3 is arranged on the bearing plate 1, a lifting plate 4 is slidably connected to the inner surface of the embedded box 2, a resistance plate 5 is fixedly connected to the upper surface of the lifting plate 4, the resistance plate 5 is movably connected inside the movable hole 3, an oil filling pipe 6 and an oil drain pipe 7 are connected to the embedded box 2, a No. 1 solenoid valve 8 is arranged inside the oil filling pipe 6, a No. 2 solenoid valve 9 is arranged inside the oil drain pipe 7, the oil filling device is connected to the oil filling pipe 6 and the oil drain pipe 7, and the material of the resistance plate 5 is wear-resistant rubber.

[0030] A load-bearing column 10 is fixedly connected to the upper surface of the shock-absorbing device. A limited position structure is arranged on the upper surface of the load-bearing column 10. A displacement sensor 11 is fixedly connected to the outer surface of the load-bearing column 10. The displacement sensor 11 is electrically connected to the oil injection device, the No. 1 solenoid valve 8 and the No. 2 solenoid valve 9. The displacement sensor 11 is provided with a plurality of levels, and the control corresponding to each level is different. The displacement sensor 11 has at least three levels. The displacement sensor 11 controls the oil injection device to inject or pump oil, and then controls the height of the lifting plate 4. The level of the displacement sensor 11 is set according to the use needs. Each level is a range value. When the displacement reaches the range, the solenoid valve and the oil injection device are controlled. For example, the displacement sensor 11 is set to have three levels, the first level is 0-5 cm horizontal displacement, the second level is 6-20 cm horizontal displacement, and the third level is 20 cm or more horizontal displacement, each level of horizontal displacement is set according to specific needs. When in use, when the building displacement is at the first level, the interior of the embedded box 2 is full of oil, the height of the lifting plate 4 is the highest, and the resistance plate 5 supports the shock absorbing device. At this time, the friction force is maximum, preventing the building from displacement and ensuring the stability of the building. When the displacement reaches the first level, the displacement sensor 11 controls the No. 2 liquid pump 14 and the No. 2 solenoid valve 9 to open, extracting the oil in the embedded box 2, lowering the oil level, thereby lowering the height of the lifting plate 4, and then reducing the friction between the resistance plate 5 and the shock absorbing device. The second level displacement extracts two-thirds of the oil, and the third level displacement empties the oil.

[0031] An oil injection device is provided on the outer surface of the embedded box 2, and the oil injection device includes: an oil storage tank 12, a No. 1 liquid pump 13 is fixedly connected to the outer surface of the oil storage tank 12, and the output end of the No. 1 liquid pump 13 is fixedly connected to the oil injection pipe 6, and a No. 2 liquid pump 14 is fixedly connected to the outer surface of the oil storage tank 12, and the input end of the No. 2 liquid pump 14 is fixedly connected to the oil discharge pipe 7, and the No. 1 liquid pump 13 and the No. 2 liquid pump 14 are both connected to the oil storage tank 12.

[0032] A limiting device is provided on the upper surface of the support plate 1, and the limiting device is specifically a limiting plate 15. A limiting hole 16 is provided on the limiting plate 15. An extension plate is fixedly connected to the lower surface of the damper 17 and the spring 18, and the extension plate is movably connected to the inside of the limiting hole 16. When shaking occurs, the extension plate will slide into the inside of the limiting hole 16, and the limiting plate 15 blocks the shock absorbing device to prevent it from sliding out of the upper surface of the support plate 1.

[0033] A shock absorbing device is slidably connected to the upper surface of the support plate 1, and the shock absorbing device is movably connected to the limit device and the resistance plate 5. The shock absorbing device is specifically a damper 17 and a spring 18. A positioning plate 19 is provided on the damper 17. The lower end of the spring 18 is fixedly connected to the upper surface of the positioning plate 19. The positioning plate 19 is slidably connected to the support plate 1, and the positioning plate 19 is movably connected to the inside of the limit hole 16.

[0034] The limiting structure includes: a steel cable 20, which passes through the load-bearing column 10, an embedded box 2, and a shock-absorbing device. One end of the steel cable 20 is fixedly connected to the lower surface of the embedded box 2, and the other end of the steel cable 20 passes through the load-bearing column 10 and is located above the load-bearing column 10. The steel cable 20 is slidably connected to the load-bearing column 10 and the shock-absorbing device. A fixed disk 21 is fixedly connected to the outer surface of the steel cable 20, and a top spring 22 is fixedly connected to the upper surface of the load-bearing column 10. The top spring 22 is fixedly connected to the fixed disk 21 at one end away from the load-bearing column 10. A pulley block is provided on the load-bearing column 10. When displacement occurs, the pulley block changes the direction of the steel cable 20 so that the steel cable 20 located inside the load-bearing column 10 is always in a vertical state, thereby avoiding deformation of the top spring 22 in other directions, thereby ensuring the overall stability. At the same time, the steel cable 20 can limit the load-bearing column 10 to prevent it from sliding too violently in the horizontal direction.

[0035] The shock absorbing device includes a viscous damper, a viscoelastic damper, a friction damper, etc. This is a mature prior art and will not be elaborated here.

[0036] Working principle: According to the use requirements, the level of the displacement sensor 11 is set, and each level is a range value. When the displacement reaches the range, the solenoid valve and the oil injection device are controlled. For example, the displacement sensor 11 is set to have three levels, the first level is 0-5 cm horizontal displacement, the second level is 6-20 cm horizontal displacement, and the third level is 20 cm or more horizontal displacement. When in use, when the building displacement is at the first level, the interior of the embedded box 2 is full of oil, at this time the height of the lifting plate 4 is the highest, the resistance plate 5 supports the shock absorbing device, and the friction is maximum at this time. When the friction is maximum, the resistance plate 5 tightly supports the shock absorbing device. At this time, the structure is mainly for small-amplitude, low-frequency daily micro-vibrations (such as wind vibration); when the displacement reaches the first level, the displacement sensor 11 controls the No. 2 liquid pump 14 and the No. 2 solenoid valve 9 to open, and the oil in the embedded box 2 is pumped out to lower the oil level, thereby lowering the height of the lifting plate 4, and then reducing the friction between the resistance plate 5 and the shock absorbing device. The second-level displacement pumps out two-thirds of the oil, and the third-level displacement empties the oil. The system quickly adjusts the friction to allow the shock absorbing device to start working to absorb and dissipate seismic energy. The system dynamically adjusts the friction to ensure that the shock absorbing device can slide freely during an earthquake to exert its shock absorbing effect. When a large displacement occurs, the pulley group changes the direction of the steel cable 20 so that the steel cable 20 inside the load-bearing column 10 is always in a vertical state, thereby preventing the top spring 22 from deforming in other directions, thereby ensuring the overall stability. At the same time, the steel cable 20 can limit the load-bearing column 10 to prevent it from sliding too violently.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A friction pendulum sliding support with adjustable friction force, characterized in that: include: A support plate (1), wherein the lower surface of the support plate (1) is fixedly connected to an embedded box (2), a movable hole (3) is provided on the support plate (1), the inner surface of the embedded box (2) is slidably connected to a lifting plate (4), the upper surface of the lifting plate (4) is fixedly connected to a resistance plate (5), the resistance plate (5) is movably connected inside the movable hole (3), an oil filling pipe (6) and an oil discharge pipe (7) are connected to the embedded box (2), a first solenoid valve (8) is provided inside the oil filling pipe (6), a second solenoid valve (9) is provided inside the oil discharge pipe (7), and an oil filling device is provided on the outer surface of the embedded box (2), the oil filling device is connected to both the oil filling pipe (6) and the oil discharge pipe (7); A limiting device is provided on the upper surface of the support plate (1), a shock absorbing device is slidably connected to the upper surface of the support plate (1), and the shock absorbing device is movably connected to the limiting device and the resistance plate (5); A load-bearing column (10) is fixedly connected to the upper surface of the shock-absorbing device, a limit structure is provided on the upper surface of the load-bearing column (10), a displacement sensor (11) is fixedly connected to the outer surface of the load-bearing column (10), and the displacement sensor (11) is electrically connected to the oil injection device, the No. 1 solenoid valve (8), and the No. 2 solenoid valve (9); The oil injection device comprises: an oil storage tank (12), a first liquid pump (13) being fixedly connected to the outer surface of the oil storage tank (12), an output end of the first liquid pump (13) being fixedly connected to an oil injection pipe (6), a second liquid pump (14) being fixedly connected to the outer surface of the oil storage tank (12), an input end of the second liquid pump (14) being fixedly connected to an oil discharge pipe (7); The displacement sensor (11) is provided with a plurality of levels, and the control corresponding to each level is different; The limiting device is specifically a limiting plate (15), and a limiting hole (16) is provided on the limiting plate (15); the shock absorbing device is specifically a damper (17) and a spring (18), and a positioning plate (19) is provided on the damper (17), and the lower end of the spring (18) is fixedly connected to the upper surface of the positioning plate (19); The limiting structure comprises: a steel cable (20), the steel cable (20) passing through the load-bearing column (10), the embedded box (2) and the shock-absorbing device, and one end of the steel cable (20) is fixedly connected to the lower surface of the embedded box (2).

2. The friction pendulum sliding support with adjustable friction force according to claim 1, characterized in that: The positioning plate (19) is slidably connected to the support plate (1), and the positioning plate (19) is movably connected inside the limiting hole (16).

3. The friction pendulum sliding support with adjustable friction force according to claim 1, characterized in that: The other end of the steel cable (20) passes through the load-bearing column (10) and is located above the load-bearing column (10). The steel cable (20) is slidably connected to the load-bearing column (10) and the shock-absorbing device. A fixing plate (21) is fixedly connected to the outer surface of the steel cable (20).

4. The friction pendulum sliding support with adjustable friction force according to claim 3, characterized in that: A top spring (22) is fixedly connected to the upper surface of the load-bearing column (10), and one end of the top spring (22) away from the load-bearing column (10) is fixedly connected to the fixed plate (21).

5. The friction pendulum sliding support with adjustable friction force according to claim 1, characterized in that: The displacement sensor (11) has at least three levels.

6. The friction pendulum sliding support with adjustable friction force according to claim 5, characterized in that: The displacement sensor (11) has three levels, the first level is 0-5 cm horizontal displacement, the second level is 6-20 cm horizontal displacement, and the third level is above 20 cm horizontal displacement.

7. The friction pendulum sliding support with adjustable friction force according to claim 1, characterized in that: The damper (17) is one of a viscous damper, a viscoelastic damper, and a friction damper.

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