Tensile and anti-torsion friction pendulum shock insulation support
By incorporating damping and buffering mechanisms in seismic isolation bearings, torsional torque is converted into kinetic energy and dissipated, overcoming the limitations of traditional bearings under torsion and tension, achieving efficient anti-torsion and anti-tensile performance, and improving the stability and safety of the structure.
Patent Information
- Application Number
- CN202520289908.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Traditional seismic isolation bearings are insufficient in terms of torsional resistance, making it difficult to effectively limit torsional displacement, which may lead to local structural damage or overall instability. They are also prone to detachment or damage under tensile forces.
A tensile and torsional frictional pendulum seismic isolation bearing was designed. By setting a damping mechanism between the middle and upper seat plates and a buffer mechanism between the lower and middle seat plates, the pendulum arm converts the torsional torque into kinetic energy and dissipates it through the damper. The leaf spring provides a reaction force to prevent detachment and ensure the stability of the structure.
It effectively limits torsional displacement, avoids local structural damage, improves overall stability and safety, enhances tensile strength, and ensures the comprehensive performance of the support.
Smart Images
Figure CN223937384U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seismic isolation bearing technology, specifically a tensile and torsional friction pendulum seismic isolation bearing. Background Technology
[0002] In building structures and bridge engineering, seismic isolation technology is an important means of mitigating the impact of external dynamic forces such as earthquakes and wind loads on structures. Traditional seismic isolation bearings mainly absorb and dissipate energy through sliding friction or elastic deformation, but they have significant shortcomings in torsional resistance. When a structure is subjected to torsional moments, traditional bearings are unable to effectively limit torsional displacement, which may lead to localized structural failure and affect overall stability.
[0003] Although existing friction pendulum seismic isolation bearings achieve free horizontal sliding through the cooperation of a sliding plate and a spherical pendulum, and reduce the energy transferred to the substructure through frictional energy dissipation, the superstructure may generate a large torsional moment under strong earthquakes or wind loads, causing the bearing to be unable to effectively limit torsional displacement, which in turn leads to local structural damage or even overall instability. Utility Model Content
[0004] The purpose of this invention is to provide a tensile and torsional frictional pendulum seismic isolation bearing to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A tensile and torsional friction pendulum seismic isolation bearing, comprising
[0007] A lower seat plate, with a middle seat plate at its upper end, and a buffer mechanism between the lower seat plate and the middle seat plate;
[0008] An upper seat plate is provided at the upper end of the middle seat plate, and a shock absorption mechanism is provided between the middle seat plate and the upper seat plate.
[0009] Preferably, the buffer mechanism includes a limiting sleeve, a limiting sleeve is provided at the middle of one end of the middle seat plate near the lower seat plate, a plurality of leaf springs are provided at equal arcs on the inner wall of the limiting sleeve, and a sliding plate is fixedly installed at the middle of the top of the lower seat plate by a connecting column.
[0010] Preferably, a dustproof gasket is provided between the sliding plate and the lower seat plate and outside the connecting column;
[0011] Preferably, the shock absorption mechanism includes a bearing seat 1, bearing seat 1 is provided at the four outer corners of the middle bearing plate, bearing seat 2 is provided at the four bottom corners of the upper bearing plate, and a swing arm is movably provided between bearing seat 1 and bearing seat 2.
[0012] Preferably, the damping mechanism further includes a bearing seat three, which is arranged side by side at the bottom end of the upper seat plate and near the bearing seat two, and a bearing seat four is arranged on the outside of the swing arm near the bearing seat two, and a damper is arranged between the bearing seat three and the bearing seat four.
[0013] Preferably, several bolts are provided on the outer sides of both the lower seat plate and the upper seat plate.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This type of tensile and torsional friction pendulum seismic isolation bearing, by setting a damping mechanism between the middle bearing plate and the upper bearing plate, when the structure is subjected to torsional moment, the pendulum arm changes its angle by swinging, converting the torsional moment into the kinetic energy of the pendulum arm. At the same time, the damper dissipates energy through internal friction or hydraulic resistance, reducing the impact of torsional moment on the upper structure. This solves the problem that traditional bearings are difficult to limit displacement under torsional moment, avoids local structural damage, and further improves the overall performance of the bearing.
[0016] 2. This type of tensile and torsional friction pendulum seismic isolation bearing, by setting a buffer mechanism between the lower and middle bearing plates, and fixing a sliding plate and a connecting column at the top center of the lower bearing plate, when the structure is subjected to tension, the leaf spring generates a reaction force through elastic deformation, preventing the middle bearing plate from separating from the lower bearing plate. At the same time, the rigid connection of the connecting column further ensures the stability of the bearing, solving the problem that traditional seismic isolation bearings are prone to separation or damage under tension, and improving the overall stability and safety of the structure. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall main structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the limiting sleeve of this utility model;
[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0020] Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.
[0021] In the diagram: 1. Lower seat plate; 2. Middle seat plate; 3. Upper seat plate; 4. Limit sleeve; 5. Leaf spring; 6. Connecting column; 7. Sliding disc; 8. Dustproof washer; 9. Shaft seat one; 10. Shaft seat two; 11. Swing arm; 12. Shaft seat three; 13. Shaft seat four; 14. Damper; 15. Bolt. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figure 1-4 As shown, this utility model provides a technical solution:
[0024] A tensile and torsional frictional pendulum vibration isolation bearing includes a lower seat plate 1, a middle seat plate 2 at the upper end of the lower seat plate 1, a buffer mechanism between the lower seat plate 1 and the middle seat plate 2, the buffer mechanism including a limiting sleeve 4, a limiting sleeve 4 at the middle end of the middle seat plate 2 near the lower seat plate 1, a plurality of leaf springs 5 arranged at equal arcs on the inner wall of the limiting sleeve 4, a sliding plate 7 fixedly installed at the top center of the lower seat plate 1 by a connecting column 6, a dustproof gasket 8 between the sliding plate 7 and the lower seat plate 1 and located outside the connecting column 6, an upper seat plate 3 at the upper end of the middle seat plate 2, and a plurality of bolts 15 on the outer sides of both the lower seat plate 1 and the upper seat plate 3.
[0025] In this embodiment, by setting a buffer mechanism between the lower seat plate 1 and the middle seat plate 2, and fixing the sliding disk 7 and the connecting column 6 at the top center of the lower seat plate 1, when the structure is subjected to tension, the leaf spring 5 generates a reaction force through elastic deformation to prevent the middle seat plate 2 from separating from the lower seat plate 1. At the same time, the rigid connection of the connecting column 6 further ensures the stability of the support, solving the problem that traditional seismic isolation supports are prone to separation or damage under tension, and improving the overall stability and safety of the structure.
[0026] like Figure 1 and Figure 3 As shown, a damping mechanism is provided between the middle seat plate 2 and the upper seat plate 3. The damping mechanism includes a bearing seat 19, which is provided at the four corners of the middle seat plate 2. A bearing seat 20 is provided at the four corners of the bottom end of the upper seat plate 3. A swing arm 11 is movably provided between the bearing seat 19 and the bearing seat 20. The damping mechanism also includes a bearing seat 32, which is provided side by side at the bottom end of the upper seat plate 3 and on the side close to the bearing seat 20. A bearing seat 43 is provided on the side of the swing arm 11 close to the bearing seat 20. A damper 14 is provided between the bearing seat 32 and the bearing seat 43.
[0027] In this embodiment, by setting a damping mechanism between the middle seat plate 2 and the upper seat plate 3, when the structure is subjected to a torsional moment, the swing arm 11 changes its angle by swinging, converting the torsional moment into the kinetic energy of the swing arm 11. At the same time, the damper 14 dissipates energy through internal friction or hydraulic resistance, reducing the impact of the torsional moment on the upper structure. This solves the problem that traditional supports are difficult to limit displacement under the action of torsional moment, avoids local structural damage, and further improves the overall performance of the support.
[0028] Working principle: When external power is applied to the structure, the power of the upper structure is transmitted to the damping mechanism through the upper seat plate 3. The swing arm 11 swings under the support of the first bearing seat 9 and the second bearing seat 10, converting some of the energy into the kinetic energy of the swing arm 11. At the same time, the damper 14 dissipates the kinetic energy of the swing arm 11 through internal friction or hydraulic resistance, further reducing the power transmitted to the upper structure. Meanwhile, the middle seat plate 2 is displaced under the action of the buffer mechanism. The leaf spring 5 on the inner wall of the limiting sleeve 4 absorbs energy through elastic deformation and returns to its original position after the displacement, playing a role in buffering and limiting. The sliding plate 7 is fixed to the lower seat plate 1 through the connecting column 6, allowing the middle seat plate 2 to slide freely in the horizontal direction. The dustproof gasket 8 prevents dust. Impurities are prevented from entering the sliding surface, ensuring smooth sliding. When the structure is subjected to tension, the limiting sleeve 4 and leaf spring 5 provide reaction force through elastic deformation to prevent the middle seat plate 2 from separating from the lower seat plate 1. At the same time, the swing arm 11 and damper 14 further enhance the tensile strength by limiting the displacement of the upper seat plate 3. When the structure is subjected to torsional moment, the swing arm 11 changes its angle by swinging, converting the torsional moment into the kinetic energy of the swing arm 11. The damper 14 reduces the impact of the torsional moment on the upper structure by dissipating the kinetic energy of the swing arm 11. Finally, when the external power action ends, the leaf spring 5 and damper 14 return to their original positions, ensuring that the support returns to its initial state, thereby achieving efficient seismic isolation, tensile and torsional resistance functions, and significantly improving the seismic performance and safety of the structure.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A tensile and torsional friction pendulum seismic isolation bearing, characterized in that: include A lower seat plate (1) is provided at the upper end of the lower seat plate (1) and a middle seat plate (2) is provided between the lower seat plate (1) and the middle seat plate (2); An upper seat plate (3) is provided at the upper end of the middle seat plate (2). A shock-absorbing mechanism is provided between the middle seat plate (2) and the upper seat plate (3). The shock-absorbing mechanism includes a first bearing seat (9). The first bearing seat (9) is provided at the four corners of the middle seat plate (2). The second bearing seat (10) is provided at the four corners of the bottom end of the upper seat plate (3). A swing arm (11) is movably provided between the first bearing seat (9) and the second bearing seat (10).
2. The tensile and torsional frictional pendulum seismic isolation bearing according to claim 1, characterized in that: The buffer mechanism includes a limiting sleeve (4), a limiting sleeve (4) is provided at the middle of one end of the middle seat plate (2) near the lower seat plate (1), a number of leaf springs (5) are provided at the inner wall of the limiting sleeve (4) with equal arc, and a sliding plate (7) is fixedly installed at the top center of the lower seat plate (1) by a connecting column (6).
3. The tensile and torsional frictional pendulum seismic isolation bearing according to claim 2, characterized in that: A dustproof gasket (8) is provided between the sliding plate (7) and the lower seat plate (1) and outside the connecting column (6).
4. The tensile and torsional frictional pendulum seismic isolation bearing according to claim 1, characterized in that: The damping mechanism also includes a bearing seat three (12), which is arranged side by side at the bottom of the upper seat plate (3) and on the side near the bearing seat two (10). A bearing seat four (13) is arranged on the outside of the side of the swing arm (11) near the bearing seat two (10). A damper (14) is arranged between the bearing seat three (12) and the bearing seat four (13).
5. The tensile and torsional frictional pendulum seismic isolation bearing according to claim 1, characterized in that: Several bolts (15) are provided on the outer sides of both the lower seat plate (1) and the upper seat plate (3).