Self-resetting damping device

Abstract

The embodiment of the utility model provides a self-resetting damping device. The self-resetting damping device comprises a limiting frame, a first sliding plate, a second sliding plate and a friction damper. A containing cavity is formed in the limiting frame, and the first sliding plate and the second sliding plate are opposite in the preset direction, slidably penetrate through the limiting frame and extend into the containing cavity; the friction damper comprises a friction cover plate assembly and a plurality of friction core plates, the friction cover plate assembly is lapped between every two adjacent friction core plates, the two friction core plates located at the outermost end are connected with the first sliding plate and the second sliding plate correspondingly, and the friction face of each core plate comprises a plane sliding area and a slope sliding area. The friction cover plate assembly is provided with a cover plate friction face in friction fit with the plane sliding area and the slope sliding area, and the slope sliding area can force the cover plate friction face to move and reset from the slope sliding area to the plane sliding area. Therefore, the self-resetting damping device has the advantages of being high in adaptive capacity, good in reliability and good in self-resetting capacity.

Description

Technical Field

[0001] This utility model relates to the field of damper technology, specifically to a self-resetting damping device. Background Technology

[0002] Under normal service loads, friction dampers provide additional stiffness to the structure. Under moderate to severe earthquakes, the friction dampers absorb and dissipate the input energy by generating frictional slip, providing additional damping and reducing the structural response. However, friction dampers in related technologies suffer from relatively fixed damping forces and inability to achieve proper post-damping reset, often resulting in significant residual deformation after an earthquake, impacting the building's normal functionality and safety. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a self-resetting damping device. This self-resetting damping device has the advantages of strong adaptability, high reliability, and good self-resetting capability.

[0004] The self-resetting damping device of this utility model embodiment includes a limiting frame, a first sliding plate, a second sliding plate, and a friction damper.

[0005] The limiting frame has a receiving cavity, and the first sliding plate and the second sliding plate are aligned along a preset direction (e.g., Figure 1 The friction damper (shown in the left-right direction) is slidably threaded through the limiting frame and extends into the receiving cavity; the friction damper is disposed in the receiving cavity, and the friction damper includes a friction cover plate assembly and a plurality of friction core plates, the plurality of friction core plates being arranged sequentially along the preset direction, the friction cover plate assembly being placed between two adjacent friction core plates, the two outermost friction core plates being respectively connected to the first sliding plate and the second sliding plate, each friction core plate having a core plate friction surface, the core plate friction surface including a planar sliding area and an inclined sliding area arranged sequentially along the preset direction, the friction cover plate assembly having a cover plate friction surface that frictionally engages with the planar sliding area and the inclined sliding area, the inclined sliding area being able to force the cover plate friction surface to move and reset from the inclined sliding area toward the planar sliding area.

[0006] The self-resetting damping device of this utility model divides the core plate friction surface into a planar sliding zone and an inclined sliding zone arranged sequentially along a preset direction. When the self-resetting damping device is subjected to external force, the cover plate friction surface first slides with the planar sliding zone (first stage). The planar sliding zones of the cover plate friction surface and the core plate friction surface achieve frictional energy dissipation through mutual movement, because the planar sliding zone can provide stable initial frictional energy dissipation. As the external force increases, a geometric strengthening effect occurs, and the cover plate friction surface slides simultaneously on the planar sliding zone and the inclined sliding zone (second stage). The cover plate friction surface of the friction cover plate assembly can achieve frictional energy dissipation in the second stage through the relative movement of the planar sliding zone and the inclined sliding zone, forming a nonlinear energy dissipation gradient that adapts to the earthquake intensity, improving the overall reliability. It can adaptively provide damping force and damping effect according to different activity amplitudes, thereby achieving the effect of small energy dissipation in small earthquakes and large energy dissipation in large earthquakes.

[0007] Furthermore, the inclined slip zone design allows the structure to automatically return to the planar slip zone after an earthquake, enabling it to more easily return to its original position after the vibration stops, thus enhancing its self-resetting capability. Moreover, the inclined damping surface helps disperse seismic energy, and by optimizing the energy absorption path, it reduces stress concentration within the structure, thereby lowering the risk of residual deformation after an earthquake.

[0008] Therefore, the self-resetting damping device of this utility model has the advantages of strong adaptability, high reliability and good self-resetting capability.

[0009] In some embodiments, the friction cover plate assembly includes a first cover plate and a second cover plate arranged in pairs. The friction core plate has the planar sliding area and the inclined sliding area symmetrically arranged on both surfaces in the thickness direction. The cover plate friction surface of each of the first cover plate and the second cover plate slides and engages with the two core plate friction surfaces in the thickness direction of the two adjacent friction core plates.

[0010] In some embodiments, the plurality of friction core plates include a first end core plate, a center core plate, and a second end core plate arranged sequentially along a preset direction. Each of the first end core plate and the second end core plate has grooves on both sides in the thickness direction, and the center core plate has at least two grooves on both sides in the thickness direction. Each groove has a planar bottom wall and an inclined side wall. The bottom wall forms the planar sliding area, and the side wall forms the inclined sliding area. There are two friction cover plate assemblies. In one friction cover plate assembly, the first cover plate and the second cover plate are respectively slidably fitted in the grooves of the first end core plate and the center core plate, respectively. In the other friction cover plate assembly, the first cover plate and the second cover plate are respectively slidably fitted in the grooves of the second end core plate and the center core plate, respectively.

[0011] In some embodiments, each of the first cover plate and the second cover plate has a protrusion that engages with the groove. The protrusion forms a friction surface of the cover plate. The protrusion has a planar surface and an inclined surface, and the planar surface and the inclined surface of the protrusion are capable of slidingly engaging with the bottom wall and the side wall of the groove.

[0012] In some embodiments, the protrusion on one of the first cover plate and the second cover plate is provided with a sliding protrusion, and each of the first end core plate, the central core plate and the second end core plate is provided with an oblong hole, the length of which is consistent with a preset direction, and the sliding protrusion is slidably disposed in the oblong hole.

[0013] In some embodiments, one of the first cover plate and the second cover plate is connected to the sliding bump by an extendable fastener;

[0014] In other embodiments, the sliding bump is integrally formed on one of the first cover plate and the second cover plate.

[0015] In some embodiments, the friction cover plate assembly further includes a first friction plate and a second friction plate, the first friction plate being disposed between the first cover plate and the friction core plate, and the second friction plate being disposed between the second cover plate and the friction core plate, both the first friction plate and the second friction plate being attached to the surfaces of the planar sliding area and the inclined sliding area.

[0016] In some embodiments, at least one of the first sliding plate and the second sliding plate is provided with a limiting stop protrusion, the limiting frame is provided with a limiting guide groove, and the limiting stop protrusion can abut against the limiting guide groove;

[0017] In some embodiments, the friction damper has a plurality of components, wherein two of the friction dampers are respectively connected to the first sliding plate and the second sliding plate along the thickness direction of each of the first sliding plate and the second sliding plate.

[0018] In some embodiments, the self-resetting damping device further includes an elastic reset member. The limiting frame includes two first limiting end plates and a second limiting end plate arranged opposite each other along the preset direction. The two first limiting end plates and the second limiting end plate can move closer or further apart along the preset direction. The first sliding plate and the second sliding plate are slidably mounted on the first limiting end plate and the second limiting end plate in a one-to-one correspondence. The elastic reset member is connected to each of the first limiting end plate and the second limiting end plate to drive the first limiting end plate and the second limiting end plate to move closer to each other.

[0019] The self-resetting damping device has multiple elastic reset members, each of which is an elastic tension member, and both ends of each elastic tension member are connected to the first limiting end plate and the second limiting end plate, respectively. Attached Figure Description

[0020] Figure 1 This is a perspective view of the self-resetting damping device according to an embodiment of the present invention.

[0021] Figure 2 This is a perspective view of the self-resetting damping device according to an embodiment of the present invention, omitting the friction damper.

[0022] Figure 3 This is a perspective view of the self-resetting damping device according to an embodiment of the present invention, omitting the first limiting end plate and the second limiting end plate.

[0023] Figure 4 This is a perspective view of the first sliding plate according to an embodiment of the present utility model.

[0024] Figure 5 This is a perspective view of the limiting frame and the second sliding plate in an embodiment of this utility model.

[0025] Figure 6 This is a perspective view of the elastic reset member, the first limiting end plate, and the second limiting end plate according to an embodiment of the present utility model.

[0026] Figure 7 This is a perspective view of the friction damper according to an embodiment of the present invention.

[0027] Figure 8 This is a perspective view of a portion of the friction damper in an embodiment of this utility model.

[0028] Figure 9 This is a perspective view of the first limiting end plate of this utility model embodiment.

[0029] Figure 10 This is a perspective view of the fastener according to an embodiment of the present utility model.

[0030] Figure 11 This is a perspective view of the first friction plate and the second friction plate according to an embodiment of the present invention.

[0031] Figure 12 This is a perspective view of the sliding protrusion according to an embodiment of the present invention.

[0032] Figure label:

[0033] Limiting frame 1; First limiting end plate 11; Second limiting end plate 12; Limiting guide groove 111;

[0034] First sliding plate 2; Limiting stop protrusion 21;

[0035] Second sliding plate 3;

[0036] Friction damper 4; friction cover plate assembly 41; first cover plate 411; second cover plate 412; protrusion 4111;

[0037] First end core plate 42; central core plate 43; second end core plate 44; planar sliding area 401; inclined sliding area 402; oblong hole 403; sliding protrusion 45; fastener 46;

[0038] First friction plate 51; Second friction plate 52;

[0039] 6. Elastic reset component. Detailed Implementation

[0040] The embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] The following is for reference. Figures 1-12 This invention describes a self-resetting damping device according to an embodiment of the present invention.

[0042] The self-resetting damping device of this utility model embodiment includes a limiting frame 1, a first sliding plate 2, a second sliding plate 3, and a friction damper 4.

[0043] The limiting frame 1 has a receiving cavity, and the first sliding plate 2 and the second sliding plate 3 are aligned in a preset direction (e.g., Figure 1 The friction damper 4 is disposed in the cavity and is slidably mounted on the limiting frame 1 in the left and right directions shown in the figure and extends into the receiving cavity. The friction damper 4 includes a friction cover plate assembly 41 and a plurality of friction core plates. The plurality of friction core plates are arranged sequentially in a preset direction. The friction cover plate assembly 41 is placed between two adjacent friction core plates. The two outermost friction core plates are respectively connected to the first sliding plate 2 and the second sliding plate 3. Each friction core plate has a core plate friction surface. The core plate friction surface includes a planar sliding area 401 and an inclined sliding area 402 arranged sequentially in a preset direction. The friction cover plate assembly 41 has a cover plate friction surface that frictionally engages with the planar sliding area 401 and the inclined sliding area 402. The inclined sliding area 402 can force the cover plate friction surface to move and reset from the inclined sliding area 402 toward the planar sliding area 401.

[0044] The self-resetting damping device of this embodiment divides the core plate friction surface into a planar sliding area 401 and an inclined sliding area 402 arranged sequentially along a preset direction. When the self-resetting damping device is subjected to external force, the cover plate friction surface first slides with the planar sliding area 401 (first stage). The planar sliding area 401 of the cover plate friction surface and the core plate friction surface achieves frictional energy dissipation through mutual movement, because the planar sliding area 401 can provide stable initial frictional energy dissipation. As the external force increases, a geometric strengthening effect occurs, and the cover plate friction surface slides simultaneously on the planar sliding area 401 and the inclined sliding area 402 (second stage). The cover plate friction surface of the friction cover plate assembly 41 can achieve frictional energy dissipation in the second stage through the relative movement of the planar sliding area 401 and the inclined sliding area 402, forming a nonlinear energy dissipation gradient that adapts to the earthquake intensity, improving the overall reliability. It can adaptively provide damping force and damping effect according to different activity amplitudes, thereby achieving the effect of small energy dissipation in small earthquakes and large energy dissipation in large earthquakes.

[0045] Furthermore, the inclined slip zone 402 can automatically reset to the planar slip zone 401 after an earthquake, allowing the damped structure to more easily return to its original position after the vibration stops, thus enhancing its self-resetting capability. Moreover, the inclined damping surface helps disperse seismic energy, and by optimizing the energy absorption path, it can reduce stress concentration within the structure, thereby lowering the risk of residual deformation after an earthquake.

[0046] Therefore, the self-resetting damping device of this utility model has the advantages of strong adaptability, high reliability and good self-resetting capability.

[0047] Specifically, for example Figure 1 As shown, the first sliding plate 2 is slidably fitted on the left wall of the limiting frame 1, and the first sliding plate 2 is disposed on the right wall of the limiting frame 1. Furthermore, the tilt angle of the inclined plane can be adaptively changed according to different seismic requirements, thereby achieving low energy consumption in small earthquakes and high energy consumption in large earthquakes to meet the needs of different magnitudes. In this embodiment of the self-resetting damping device, during operation, the first sliding plate 2 and the second sliding plate 3 are connected vertically to the structure of the application object. When an earthquake occurs, the building structure undergoes relative vertical displacement, causing the damper to slide relative to each other, generating frictional force.

[0048] like Figure 7 and Figure 8As shown, the friction cover plate assembly 41 includes a first cover plate 411 and a second cover plate 412 arranged in pairs. The friction core plate has a planar sliding area 401 and an inclined sliding area 402 symmetrically arranged on both surfaces in the thickness direction of the friction core plate (i.e., the upper and lower surfaces of the friction core plate). The cover plate friction surface of each of the first cover plate 411 and the second cover plate 412 slides and engages with the two core plate friction surfaces in the thickness direction of the two adjacent friction core plates.

[0049] The self-resetting damping device of this utility model divides the friction cover plate assembly 41 into a pair of first cover plates 411 and second cover plates 412. The friction core plate is symmetrically provided with a planar sliding area 401 and an inclined sliding area 402 on both surfaces in the thickness direction. Damping can be performed on both sides of the friction core plate in the thickness direction, which is equivalent to forming parallel damping on both sides of the friction core plate, thereby increasing the overall load-bearing capacity.

[0050] like Figure 7 and Figure 8 As shown, a plurality of friction core plates include a first end core plate 42, a central core plate 43, and a second end core plate 44 arranged sequentially along a preset direction. Each of the first end core plate 42 and the second end core plate 44 has grooves on both sides in the thickness direction, and the central core plate 43 has at least two grooves on both sides in the thickness direction. Each groove has a planar bottom wall and an inclined side wall. The bottom wall forms a planar sliding area 401, and the side wall forms an inclined sliding area 402. There are two friction cover plate assemblies 41. In one friction cover plate assembly 41, the first cover plate 411 and the second cover plate 412 are respectively slidably fitted in the grooves of the first end core plate 42 and the central core plate 43. In the other friction cover plate assembly 41, the first cover plate 411 and the second cover plate 412 are respectively slidably fitted in the grooves of the second end core plate 44 and the central core plate 43.

[0051] The self-resetting damping device of this utility model, through the first end core plate 42, the central core plate 43 and the second end core plate 44 arranged sequentially along a preset direction, thereby forming more damping surfaces in the preset direction (see reference). Figure 2 As shown, four damping surfaces are formed on both the upper and lower surfaces, greatly improving the reliability of the equipment. Therefore, the self-resetting damping device of this embodiment further enhances the damping effect.

[0052] like Figure 7 and Figure 8 As shown, each of the first cover plate 411 and the second cover plate 412 has a protrusion 4111, which fits into the groove. The protrusion 4111 forms a cover plate friction surface. The protrusion 4111 has a flat surface and an inclined surface. The flat surface and the inclined surface of the protrusion 4111 can slide with the bottom wall and the side wall of the groove.

[0053] The self-resetting damping device of this embodiment of the invention features a protrusion 4111 on each of the first cover plate 411 and the second cover plate 412. The plane and inclined surface of the protrusion 4111 can slide and engage with the bottom wall and side wall of the groove. This increases the friction area between each of the first cover plate 411 and the second cover plate 412 and the friction core plate. Consequently, the self-resetting damping device of this embodiment of the invention enhances the friction energy dissipation effect.

[0054] like Figure 7 and Figure 8 As shown, the protrusion 4111 on one of the first cover plate 411 and the second cover plate 412 is provided with a sliding protrusion 45. Each of the first end core plate 42, the central core plate 43 and the second end core plate 44 is provided with a waist-shaped hole 403. The length of the waist-shaped hole 403 is consistent with the preset direction. The sliding protrusion 45 is slidably disposed in the waist-shaped hole 403.

[0055] The self-resetting damping device of this utility model has a sliding protrusion 45 on one of the first cover plate 411 and the second cover plate 412, and an oblong hole 403 on the corresponding core plate. This allows the corresponding cover plate to move along the length extension direction of the oblong hole 403, thereby improving the stability of the overall damping process.

[0056] Specifically, such as Figure 7 and Figure 8 As shown, the central core plate 43 has two core plate friction surfaces on both sides in the thickness direction. The two friction surfaces of the first cover plate 411 of one friction cover plate assembly 41 are respectively connected to the core plate friction surface of the first end core plate 42 and one of the core plate friction surfaces of the central core plate 43. Similarly, the two friction surfaces of the first cover plate 411 of the other friction cover plate assembly 41 are respectively connected to the core plate friction surface of the second end core plate 44 and the other core plate friction surface of the central core plate 43. Likewise, the same applies to the lower surface, forming four damping surfaces. That is, the friction energy dissipation device of the present invention extends the energy dissipation path in series, allowing each damping surface to function sequentially, which is beneficial for achieving miniaturized design and damping effect.

[0057] like Figure 7 and Figure 8As shown, each of the first cover plate 411 and the second cover plate 412 is connected to the sliding protrusion 45 via an extendable fastener 46. This embodiment of the invention is not limited to this; in other embodiments, the sliding protrusion 45 is integrally formed on one of the first cover plate 411 and the second cover plate 412. Therefore, the self-resetting damping device of this embodiment of the invention has the advantage of good structural stability. Furthermore, by making the fastener 46 extendable, it can be stretched when engaged with the inclined sliding area 402. The fastener 46 provides a restoring force to the friction cover plate assembly 41 and the friction core plate, thereby making it easier for the restoring force to return to its original position. This improves the restoring performance.

[0058] Alternatively, fastener 46 may be made of Ni-Ti shape memory alloy wire twisted together (SMA material).

[0059] Furthermore, each sliding protrusion 45 is secured to each of the first cover plate 411 and the second cover plate 412 by a plurality of fasteners 46. This prevents structural failure due to the shearing of a single bolt, improving the reliability of the friction energy dissipation device. For example, the fasteners 46 can be SMA bolts.

[0060] like Figure 7 , Figure 8 and Figure 11 As shown, the self-resetting damping device of this utility model embodiment also includes a first friction plate 51 and a second friction plate 52. The first friction plate 51 is disposed between the first cover plate 411 and the friction core plate, and the second friction plate 52 is disposed between the second cover plate 412 and the friction core plate. The first friction plate 51 and the second friction plate 52 are both attached to the surfaces of the planar sliding area 401 and the inclined sliding area 402.

[0061] The self-resetting damping device of this embodiment, by setting a first friction plate 51 and a second friction plate 52, helps to improve the friction effect of the damping surface, thereby improving energy dissipation efficiency and avoiding the problem of component damage caused by the first sliding plate 2 and the second sliding plate 3 exceeding their positions due to excessive vibration. Therefore, the self-resetting damping device of this embodiment increases the friction energy dissipation effect.

[0062] Specifically, the first friction plate 51 and the second friction plate 52 are matched with the shape of the groove on the friction core plate.

[0063] like Figures 1 to 3 As shown, at least one of the first sliding plate 2 and the second sliding plate 3 is provided with a limiting stop protrusion 21, and the limiting frame 1 is provided with a limiting guide groove 111. The limiting stop protrusion 21 can abut against the limiting guide groove 111. This can stop the sliding position of the first sliding plate 2 and the second sliding plate 3, avoiding the problem of the first sliding plate 2 and the second sliding plate 3 exceeding their positions due to excessive vibration and causing damage to the components.

[0064] Multiple friction dampers 4 are provided, with two friction dampers 4 connected to the first sliding plate 2 and the second sliding plate 3 respectively along the thickness direction of each of them. It is understood that the two friction dampers 4 provide damping force in parallel, resulting in dual-core, dual-stage friction loss. Furthermore, the self-resetting damping device is more reliable; even if one friction damper 4 fails to function, the other friction damper 4 can still dissipate frictional energy, avoiding the problem of failure of the self-resetting damping device caused by the failure of a single friction damper 4.

[0065] like Figures 1 to 3 As shown, the self-resetting damping device of this utility model embodiment further includes an elastic reset member 6. The limiting frame 1 includes two first limiting end plates 11 and second limiting end plates 12 arranged opposite to each other along a preset direction. The two first limiting end plates 11 and second limiting end plates 12 can move closer or further away along the preset direction. The first sliding plate 2 and the second sliding plate 3 are slidably mounted on the first limiting end plates 11 and the second limiting end plates 12 in a one-to-one correspondence. The elastic reset member 6 is connected to each of the first limiting end plates 11 and the second limiting end plates 12 to drive the first limiting end plates 11 and the second limiting end plates 12 to move closer to each other.

[0066] The self-resetting damping device of this embodiment utilizes an elastic reset member 6 connected to the first limiting end plate 11 and the second limiting end plate 12. This elastic reset member 6 can drive the first limiting end plate 11 and the second limiting end plate 12 closer together, further consuming energy. This effectively creates a series damping and reset capability between the elastic reset member 6 and the friction damper 4, thus enhancing the structure's reset effect. Furthermore, each damper can function sequentially, while parallel operation increases the overall load-bearing capacity and redundancy. This structure performs better in multi-level earthquakes, partially operating during minor earthquakes and fully participating during major earthquakes, improving reliability and adaptability.

[0067] In some embodiments, the elastic reset element 6 and multiple friction dampers 4 can be simultaneously provided. That is, the self-resetting damping device of this utility model embodiment can form parallel damping by simultaneously providing multiple friction dampers 4, and then form series damping through the elastic reset element 6 and the friction dampers 4. This forms multiple energy dissipation defense lines, which greatly increases the adaptability, reliability and reset coordination of the self-resetting damping device to strong earthquakes, and also facilitates the miniaturization design of the equipment.

[0068] like Figures 1 to 3As shown, there are multiple elastic reset members 6, each of which is an elastic tension member that can be stretched. The two ends of each elastic tension member are connected to the first limiting end plate 11 and the second limiting end plate 12, respectively. Optionally, the elastic tension member can be a stranded wire made of Ni-Ti shape memory alloy wire, and its size can be limited according to specific circumstances. For example, the SMA stranded wire can be 1*7 or 7*7. When designing a dual-stage self-resetting support, the length of the SMA stranded wire should be kept as long as possible to ensure that it does not enter the threshold value; otherwise, the reset performance of the self-resetting support will be affected.

[0069] For example, such as Figures 1 to 3 As shown, four elastic reset elements 6 can be set, and the four elastic reset elements 6 can be evenly distributed to ensure the balance of force.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A self-centering damping device, characterized in that, include: A limiting frame having a receiving cavity inside; A first sliding plate and a second sliding plate are slidably threaded through the limiting frame and extend into the receiving cavity, with the first sliding plate and the second sliding plate being opposite each other in a preset direction. A friction damper is disposed within the receiving cavity. The friction damper includes a friction cover plate assembly and multiple friction core plates, which are arranged sequentially along a preset direction. The friction cover plate assembly sits between two adjacent friction core plates. The two outermost friction core plates are respectively connected to a first sliding plate and a second sliding plate. Each friction core plate has a core plate friction surface, which includes a planar sliding area and an inclined sliding area arranged sequentially along the preset direction. The friction cover plate assembly has a cover plate friction surface that frictionally engages with the planar sliding area and the inclined sliding area. The inclined sliding area can force the cover plate friction surface to move and reset from the inclined sliding area toward the planar sliding area.

2. The self-resetting damping device according to claim 1, characterized in that, The friction cover plate assembly includes a first cover plate and a second cover plate arranged in pairs. The friction core plate has the planar sliding area and the inclined sliding area symmetrically arranged on both surfaces in the thickness direction. The cover plate friction surface of each of the first cover plate and the second cover plate slides and engages with the two core plate friction surfaces in the thickness direction of the two adjacent friction core plates.

3. The self-resetting damping device according to claim 2, characterized in that, The plurality of friction core plates include a first end core plate, a center core plate, and a second end core plate arranged sequentially along a preset direction. Each of the first end core plate and the second end core plate has grooves on both sides in the thickness direction, and the center core plate has at least two grooves on both sides in the thickness direction. Each groove has a planar bottom wall and an inclined side wall. The bottom wall forms the planar sliding area, and the side wall forms the inclined sliding area. There are two friction cover plate assemblies. In one friction cover plate assembly, the first cover plate and the second cover plate are respectively slidably fitted in the grooves of the first end core plate and the center core plate. In the other friction cover plate assembly, the first cover plate and the second cover plate are respectively slidably fitted in the grooves of the second end core plate and the center core plate.

4. The self-resetting damping device according to claim 3, characterized in that, Each of the first cover plate and the second cover plate has a protrusion that fits into the groove. The protrusion forms a friction surface of the cover plate. The protrusion has a flat surface and an inclined surface, and the flat surface and the inclined surface of the protrusion can slide with the bottom wall and the side wall of the groove.

5. The self-resetting damping device according to claim 4, characterized in that, The protrusion on one of the first cover plate and the second cover plate is provided with a sliding protrusion. Each of the first end core plate, the central core plate and the second end core plate is provided with an oblong hole. The length of the oblong hole is consistent with a preset direction. The sliding protrusion is slidably disposed in the oblong hole.

6. The self-resetting damping device according to claim 5, characterized in that, One of the first cover plate and the second cover plate is connected to the sliding protrusion by an extendable fastener; Alternatively, the sliding bump may be integrally formed on one of the first cover plate and the second cover plate.

7. The self-resetting damping device according to claim 2, characterized in that, The friction cover plate assembly further includes a first friction plate and a second friction plate. The first friction plate is disposed between the first cover plate and the friction core plate, and the second friction plate is disposed between the second cover plate and the friction core plate. Both the first friction plate and the second friction plate are attached to the surfaces of the planar sliding area and the inclined sliding area.

8. The self-resetting damping device according to claim 1, characterized in that, At least one of the first sliding plate and the second sliding plate is provided with a limiting stop protrusion, and the limiting frame is provided with a limiting guide groove, and the limiting stop protrusion can abut against the limiting guide groove; And / or, the friction damper has a plurality of components, wherein two of the friction dampers are respectively connected to the first sliding plate and the second sliding plate along the thickness direction of each of the first sliding plate and the second sliding plate.

9. The self-resetting damping device according to claim 8, characterized in that, It also includes an elastic reset member. The limiting frame includes two first limiting end plates and a second limiting end plate arranged opposite each other along the preset direction. The two first limiting end plates and the second limiting end plate can move closer or further away along the preset direction. The first sliding plate and the second sliding plate are slidably passed through the first limiting end plate and the second limiting end plate in a one-to-one correspondence. The elastic reset member is connected to each of the first limiting end plate and the second limiting end plate to drive the first limiting end plate and the second limiting end plate to move closer to each other.

10. The self-resetting damping device according to claim 9, characterized in that, The elastic reset member has multiple components, each of which is an elastic tension member, and both ends of each elastic tension member are connected to the first limiting end plate and the second limiting end plate, respectively.

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