Mechanism for limiting horizontal displacement of shock insulation layer
By designing a limiting horizontal displacement device in the earthquake isolation support, using the combined structure of spring and limit ring, the problem of the displacement of the earthquake isolation layer exceeding the limit is solved, and the bidirectional limit and shock absorption effect of the earthquake isolation support is achieved, improving the The security and stability of the structure are achieved.
Patent Information
- Application Number
- CN202420812616.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-19
AI Technical Summary
When existing seismic isolation support faces large building structures, the displacement of the seismic isolation layer is likely to exceed the limit value, resulting in safety hazards of the main structure.
A horizontal displacement device including a load-bearing spindle, connecting flange, spring, press plate, limit plate and limit ring is designed. Through the elastic sliding of the spring and the series connection of the limit ring, the bidirectional limit of the shock-isolating support is realized. and improve the stability and adjustability of the device through spherical bearings and connecting rod structures.
Effectively limit the horizontal displacement of the earthquake isolation layer, ensure that the earthquake isolation support does not exceed the limit displacement during shock absorption, reduce the risk of compression and bending of the load-bearing spindle, and adjust the spring force through threaded sockets, which is suitable for high places or remote areas.
Smart Images
Figure CN222140378U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seismic isolation supports, in particular to a mechanism for limiting the horizontal displacement of a seismic isolation layer. Background Art
[0002] Seismic isolation technology is to set seismic isolation bearings and damping devices and other components between the bottom of the superstructure and the foundation, extend the natural vibration period of the structure, increase the structural damping ratio, make the structural deformation mainly concentrated in the seismic isolation layer, reduce the seismic force and deformation of the superstructure, make the structural deformation mainly concentrated in the seismic isolation layer, make the deformation of the superstructure very small, thereby ensuring the safety of the structure under the action of an earthquake.
[0003] In the existing seismic isolation bearings, especially in large-scale building structures, the bearing capacity and volume of the seismic isolation bearings are relatively large. Once faced with a major natural disaster, such as an earthquake, the displacement of the seismic isolation layer in the seismic isolation bearing will be relatively large. Once it exceeds the set displacement limit, it will cause a safety hazard to the main structure. Utility Model Content
[0004] Based on the existing technical problems, the utility model proposes a mechanism for limiting the horizontal displacement of the seismic isolation layer.
[0005] The utility model provides a mechanism for limiting the horizontal displacement of a seismic isolation layer, which comprises a load-bearing main shaft. The outer surface of the load-bearing main shaft is movably sleeved with a horizontal displacement limiting device.
[0006] The horizontal displacement limiting device includes a connecting flange and a spring, wherein the outer end surface of one of the connecting flanges and the outer end of the load-bearing main shaft are fixedly installed with connecting parts, and the connecting parts are used to achieve active connection with the pier of the seismic isolation bearing and the building structure of the main structure.
[0007] The spring is movably sleeved on the outer surface of the load-bearing main shaft and elastically slides along the axial direction of the load-bearing main shaft. The outer surface of the inner end of the load-bearing main shaft elastically slides along its axial direction and is movably sleeved on the axis center of the connecting flange.
[0008] Preferably, the type of the spring includes any one of a disc spring, a linear spring, a ring spring or a wave spring.
[0009] Preferably, a spherical bearing is installed through the hole opened in the connecting member to realize the ball joint action of the horizontal displacement limiting device within a certain angle range.
[0010] Preferably, the horizontal displacement limiting device further comprises pressure plates arranged at both ends of the spring and slidably sleeved with the surface of the load-bearing main shaft, and the load-bearing main shaft is fixedly sleeved with limiting plates on the outer surface located on the back of the two pressure plates.
[0011] When the load-bearing main shaft drives the limit plate to slide reciprocatingly and elastically, the limit plate and the surface of the pressure plate are elastically squeezed to achieve the limit action of the load-bearing main shaft when it slides reciprocatingly.
[0012] Preferably, a limit ring is movably sleeved on the outer surface of the load-bearing main shaft between the pressure plate and the limit plate to limit the elastic sliding of the two limit plates within a certain range. When the limit plate is driven by the load-bearing main shaft to slide, it passes through the axis of the limit ring and then squeezes the pressure plate.
[0013] Through the above technical solution, whether it is pulling or pressing the load-bearing main shaft, shock absorption can be achieved, thereby achieving a two-way seismic isolation and limiting effect on the seismic isolation bearing.
[0014] Preferably, the two connecting flanges are coaxially arranged on the outside of the two limiting rings, and the connecting flanges and the limiting rings are connected in series through a connecting rod in an annular array to form a whole. Both end faces of the connecting flange are provided with a first fixing sleeve which is threaded or fixedly sleeved on the surface of the connecting rod.
[0015] A second fixing sleeve which is threadedly sleeved or fixedly sleeved on the surface of the connecting rod is arranged at the end surfaces opposite to each other of the two limiting rings.
[0016] Through the above technical solution, the first fixed sleeve and the second fixed sleeve are connected to the surface of the connecting rod by threaded sleeve or fixed sleeve. The threaded sleeve can adjust the elastic force of the spring at any time according to different shock absorption requirements. The advantage of the fixed sleeve is that the elastic force of the spring can be permanently limited, which is suitable for high places or remote places that do not require frequent maintenance.
[0017] The beneficial effects of the present invention are:
[0018] 1. By setting a device to limit horizontal displacement, the isolation bearing can be limited in the horizontal direction. When the isolation bearing exceeds the limit displacement during shock absorption, the limiting isolation bearing device will limit the isolation bearing in the horizontal direction.
[0019] 2. The spring is movably sleeved on the outer surface of the load-bearing main shaft and elastically slides along the axial direction of the load-bearing main shaft, thereby achieving a shock-absorbing and guiding effect on the spring.
[0020] 3. By arranging the connecting flange and the limit ring in series through the connecting rod of the annular array to form a whole, on the one hand, the outer surface of the spring can be enclosed and guided. At the same time, compared with the sleeve, the connecting rod of the annular array is lighter in weight, and the heavier the tonnage, the more obvious the lightening effect is, thereby preventing the load-bearing main shaft from being compressed and bent. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1This is a schematic diagram of a mechanism for limiting the horizontal displacement of a seismic isolation layer proposed by the utility model;
[0022] Figure 2 This is a three-dimensional diagram of the connection between the load-bearing main shaft and the spring of a mechanism for limiting the horizontal displacement of the seismic isolation layer proposed by the utility model;
[0023] Figure 3 This is a three-dimensional diagram of the connecting rod connection of a mechanism for limiting the horizontal displacement of the seismic isolation layer proposed by the utility model;
[0024] Figure 4 A diagram showing the connection between a horizontal displacement limiting device and a seismic isolation support of a mechanism for limiting horizontal displacement of a seismic isolation layer proposed by the utility model;
[0025] Figure 5 FIG2 is a diagram showing a connection state between a horizontal displacement limiting device and a seismic isolation support of a mechanism for limiting horizontal displacement of a seismic isolation layer proposed by the utility model;
[0026] Figure 6 This is a front cross-sectional view of a linear bearing installation of a mechanism for limiting the horizontal displacement of a seismic isolation layer proposed by the utility model.
[0027] In the figure: 1. load-bearing main shaft; 2. connecting flange; 21. spring; 22. pressure plate; 23. limit plate; 24. limit ring; 25. connecting rod; 26. first fixed sleeve; 27. second fixed sleeve; 28. linear bearing; 29. center shaft; 3. connecting part; 31. spherical bearing; 4. seismic isolation support; 5. building structure. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0029] Reference Figure 1-6 A mechanism for limiting the horizontal displacement of a seismic isolation layer comprises a load-bearing main shaft 1, and a horizontal displacement limiting device is movably sleeved on the outer surface of the load-bearing main shaft 1.
[0030] The device for limiting horizontal displacement includes a connecting flange 2 and a spring 21. Preferably, the spring 21 is any one of a disc spring, a linear spring, a ring spring or a wave spring.
[0031] A connecting member 3 is fixedly mounted on the outer end surface of one of the connecting flanges 2 and the outer end of the load-bearing main shaft 1. Preferably, a spherical bearing 31 is installed through the hole opened in the connecting member 3 to realize the ball joint action of the horizontal displacement limiting device within a certain angle range.
[0032] The connecting member 3 is used to realize a movable connection with the buttress of the seismic isolation support 4 and the building structure 5 of the main structure.
[0033] In order to be able to perform shock-absorbing and limiting on the seismic isolation bearing 4, the spring 21 is movably sleeved on the outer surface of the load-bearing main shaft 1 and elastically slides along the axial direction of the load-bearing main shaft 1. By arranging the spring 21 to be movably sleeved on the outer surface of the load-bearing main shaft 1 and elastically slides along the axial direction of the load-bearing main shaft 1, the shock-absorbing and guiding effect of the spring 21 can be achieved.
[0034] The outer surface of the inner end of the load-bearing main shaft 1 is movably sleeved with the axis center of the connecting flange 2 when elastically sliding along the axial direction thereof.
[0035] This is how it is implemented:
[0036] The horizontal displacement limiting device also includes pressure plates 22 arranged at both ends of the spring 21 and slidably sleeved with the surface of the load-bearing main shaft 1 , and the load-bearing main shaft 1 is fixedly sleeved with a limiting plate 23 on the outer surface of the back side of the two pressure plates 22 .
[0037] When the load-bearing main shaft 1 drives the limiting plate 23 to slide reciprocatingly, the limiting plate 23 and the surface of the pressing plate 22 are elastically squeezed to achieve the limiting action of the load-bearing main shaft 1 when it slides reciprocatingly.
[0038] Furthermore, a limiting ring 24 is movably sleeved on the outer surface of the load-bearing main shaft 1 between the pressure plate 22 and the limiting plate 23, which limits the two limiting plates 23 to slide elastically within a certain range. When the limiting plate 23 is driven to slide by the load-bearing main shaft 1, it passes through the axis of the limiting ring 24 and then squeezes the pressure plate 22. Whether pulling or pressing the load-bearing main shaft 1, shock absorption can be achieved, so that a bidirectional isolation and limiting effect can be achieved for the isolation support 4.
[0039] In order to stably withstand the limiting elastic force, the two connecting flanges 2 are coaxially arranged on the outside of the two limiting rings 24, and the connecting flange 2 and the limiting ring 24 are connected in series through the connecting rod 25 of the annular array to form a whole. By setting the connecting flange 2 and the limiting ring 24 in series through the connecting rod 25 of the annular array to form a whole, on the one hand, the outer surface of the spring 21 can be enclosed and guided, and at the same time, the connecting rod 25 of the annular array is lighter than the sleeve, and the heavier the tonnage, the more obvious the lightening effect, thereby preventing the load-bearing main shaft 1 from being compressed and bent.
[0040] Both end surfaces of the connecting flange 2 are provided with a first fixing sleeve 26 which is threadedly sleeved or fixedly sleeved on the surface of the connecting rod 25 .
[0041] The end faces of the two stop rings 24 facing each other are provided with a second fixing sleeve 27 which is threadedly sleeved or fixedly sleeved on the surface of the connecting rod 25. The first fixing sleeve 26 and the second fixing sleeve 27 are threadedly sleeved or fixedly sleeved on the surface of the connecting rod 25. The threaded sleeve can adjust the elastic force of the spring 21 at any time according to different shock absorption requirements. The advantage of the fixed sleeve is that the elastic force of the spring 21 can be permanently limited, which is suitable for high places or remote places that do not require frequent maintenance.
[0042] In order to prevent the connecting rod 25 from being bent by pressure, Figure 6 As shown, a hole is opened at the axis center of the connecting piece 3 to fix the center axis 29 extending to the outside, and then a mounting hole is opened along the axis center line of the load-bearing main shaft 1 at one end close to the center axis 29. Then a linear bearing 28 is installed in the mounting hole. The surface of the center axis 29 is slidably inserted into the linear bearing 28, which plays a guiding role on the one hand and can share part of the gravity on the extended section of the load-bearing main shaft 1 to the connecting piece 3 at the left end on the other hand.
[0043] By setting a horizontal displacement limiting device, the seismic isolation support 4 can be seismically limited in the horizontal direction. When the seismic isolation support 4 exceeds the limit displacement during shock absorption, the seismic isolation support limiting device will limit the seismic isolation support 4 in the horizontal direction.
[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A mechanism for limiting the horizontal displacement of a seismic isolation layer, comprising a load-bearing main shaft (1), characterized in that: The outer surface of the load-bearing main shaft (1) is movably sleeved with a device for limiting horizontal displacement; The horizontal displacement limiting device comprises a connecting flange (2) and a spring (21), wherein an outer end surface of one of the connecting flanges (2) and an outer end of the load-bearing main shaft (1) are fixedly mounted with a connecting piece (3), and a movable connection with a buttress of a seismic isolation support (4) and a building structure (5) of a main structure is achieved through the connecting piece (3); The spring (21) is movably sleeved on the outer surface of the load-bearing main shaft (1) and elastically slides along the axial direction of the load-bearing main shaft (1). When the outer surface of the inner end of the load-bearing main shaft (1) elastically slides along its axial direction, it is movably sleeved on the axis of the connecting flange (2).
2. The mechanism for limiting horizontal displacement of a seismic isolation layer according to claim 1, characterized in that: The spring (21) includes any one of a disc spring, a linear spring, a ring spring or a wave spring.
3. The mechanism for limiting horizontal displacement of a seismic isolation layer according to claim 1, characterized in that: A spherical bearing (31) is installed through the hole opened in the connecting member (3) to realize the ball joint action of the horizontal displacement limiting device within a certain angle range.
4. The mechanism for limiting horizontal displacement of a seismic isolation layer according to claim 1, characterized in that: The horizontal displacement limiting device further comprises pressure plates (22) arranged at both ends of the spring (21) and slidably sleeved with the surface of the load-bearing main shaft (1); and a limiting plate (23) is fixedly sleeved on the outer surface of the load-bearing main shaft (1) and located on the back side of the two pressure plates (22); When the load-bearing main shaft (1) drives the limit plate (23) to slide reciprocatingly and elastically, the limit plate (23) and the surface of the pressure plate (22) are elastically squeezed to achieve a limit action on the reciprocating sliding of the load-bearing main shaft (1).
5. The mechanism for limiting horizontal displacement of a seismic isolation layer according to claim 4, characterized in that: A limiting ring (24) is movably sleeved on the outer surface of the load-bearing main shaft (1) between the pressure plate (22) and the limiting plate (23) to limit the two limiting plates (23) to slide elastically within a certain range. When the limiting plate (23) is driven to slide by the load-bearing main shaft (1), it passes through the axis of the limiting ring (24) and then presses the pressure plate (22).
6. The mechanism for limiting horizontal displacement of a seismic isolation layer according to claim 5, characterized in that: The two connecting flanges (2) are coaxially arranged on the outside of the two limiting rings (24), and the connecting flanges (2) and the limiting rings (24) are connected in series through a ring array of connecting rods (25) to form a whole. Both end surfaces of the connecting flanges (2) are provided with a first fixing sleeve (26) which is threaded or fixedly sleeved on the surface of the connecting rod (25); A second fixing sleeve (27) which is threadedly sleeved or fixedly sleeved on the surface of the connecting rod (25) is provided at the end surfaces opposite to each other of the two limiting rings (24).