A self-resetting support device based on SMA disc spring friction yielding energy dissipation

Abstract

The utility model relates to a kind of self-resetting brace based on SMA disc spring friction yielding energy dissipation, and it relates to the technical field of self-resetting brace, including outer sleeve, inner cylinder is provided in the outer sleeve, inner tube bundle is fixedly installed in the outer sleeve, the outer sleeve one end is welded with lug plate, the inner cylinder one end is welded with lug plate, the lug plate is respectively welded in this device both ends to connect other equipment;The outer sleeve and inner cylinder form inner chamber, disc spring energy dissipation system, friction energy dissipation system, yielding energy dissipation system are arranged in inner chamber to carry out energy dissipation shock absorption, the inner tube bundle is through type and is arranged in inner chamber, the inner tube bundle does not contact with inner cylinder;The device is fused by disc spring energy dissipation system, friction energy dissipation system, yielding energy dissipation system three kinds of mechanisms, and energy is consumed and weakened by the way of energy absorption in turn, to provide damping force with maximum capacity, not only can improve the stability of the device when using, but also can improve the damping application range of the device.

Description

Technical Field

[0001] This utility model relates to the field of self-resetting support technology, specifically a self-resetting support device based on the energy dissipation of frictional yielding of SMA disc springs. Background Technology

[0002] Self-resetting support technology provides reset capability through elastic elements (such as disc springs and shape memory alloys), combined with energy dissipation mechanisms such as friction and metal yielding, aiming to reduce residual deformation after an earthquake and improve structural recoverability. Current technologies mainly adopt composite designs, such as combining the elastic recovery of disc springs with frictional energy dissipation or the yielding section of soft steel to form a multi-stage energy dissipation path to meet the performance requirements under different earthquake magnitudes. Such supports are gradually being applied in building and bridge engineering. Their core advantage lies in balancing reset capability and energy dissipation efficiency, while simplifying the post-earthquake repair process and reducing long-term maintenance costs through modular design.

[0003] However, existing technologies still have significant drawbacks. First, the capacity of a single energy dissipation mechanism (such as relying solely on friction or metal yielding) is limited and cannot cover the demand for wide displacement, which can easily lead to insufficient energy dissipation or failure to reset under large earthquakes. Second, traditional supports often face a contradiction between reset capability and energy dissipation efficiency, that is, enhancing energy dissipation requires sacrificing reset force, while increasing reset stiffness may inhibit the performance of energy dissipation components.

[0004] For example, although composite damping self-resetting supports improve performance through multi-module collaboration, the relationship between preload and friction needs to be precisely controlled; otherwise, incomplete reset or reduced energy efficiency may occur. In addition, although high-cost materials (such as shape memory alloys) have excellent performance, their poor economic efficiency restricts their large-scale application. Low-cost alternatives such as disc springs can alleviate cost pressures, but long-term stability issues such as preload relaxation and friction degradation need to be addressed, and parameter matching is difficult.

[0005] Existing designs often struggle to balance performance improvement with cost control. For example, while composite supports reduce residual deformation, the integration of multiple systems increases manufacturing and maintenance complexity, highlighting the bottleneck in the practical application of the technology. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes the following technical solution: A self-resetting support device based on SMA disc spring friction yield energy dissipation includes an outer sleeve, an inner sleeve inside the outer sleeve, an inner tube bundle fixedly installed inside the outer sleeve, an ear plate welded to one end of the outer sleeve, and an ear plate welded to one end of the inner sleeve. The ear plates are respectively welded to both ends of the device for connecting other equipment. The outer sleeve and the inner sleeve form an inner cavity, in which a disc spring energy dissipation system, a friction energy dissipation system, and a yield energy dissipation system are installed for energy dissipation and vibration reduction. The inner tube bundle is installed through the inner cavity and does not contact the inner sleeve. Furthermore, a second spring is provided in the inner cavity, which passes through the inner tube bundle and is installed in the yielding energy dissipation system for bottoming out buffering; a first spring is provided in the inner cavity, which is located at the end where the inner tube bundle connects to the outer sleeve, and is used to bottom out buffer the outer sleeve and the disc spring energy dissipation system.

[0007] Furthermore, the disc spring energy dissipation system includes: a disc spring assembly, a threaded steel pipe, a first limiting plate, a first baffle, and a first bolt; the first limiting plate is fixedly connected to the outer wall of the inner tube bundle, the disc spring assembly is symmetrically arranged within the disc spring energy dissipation system, the threaded steel pipe passes through the disc spring assembly, the two ends of the threaded steel pipe are provided with threaded structures, and the threaded structures of the threaded steel pipe are provided with the first bolt, which is used to apply a preload to the disc spring assembly.

[0008] Furthermore, one end of the disc spring assembly passes through a threaded steel pipe, and the first baffle is fixedly connected to the inner wall of the inner cylinder. A second baffle is fixedly installed at the other end of the threaded steel pipe, and the second baffle is fixedly connected to the inner wall of the inner cylinder. This can be regarded as setting multiple disc spring damping components inside the inner cylinder. This disc spring damping component is fixedly connected to the outer sleeve through the first limiting plate and the inner tube bundle. At this time, the disc spring damping component acts as a damping device between the outer sleeve and the inner cylinder. When vibration is transmitted between the outer sleeve and the inner cylinder, energy is consumed through the disc spring damping component.

[0009] Furthermore, the friction energy dissipation system is disposed between the disc spring energy dissipation system and the yield energy dissipation system. The friction energy dissipation system includes: a first metal friction plate, a second metal friction plate, a second bolt, a second limiting plate, and a third baffle. The two ends of the first metal friction plate are respectively fixed to the disc spring energy dissipation system and the yield energy dissipation system. The inner tube bundle passes through the third baffle, and the outer wall of the inner tube bundle does not contact the third baffle. The inner tube bundle and the third baffle can slide relative to each other.

[0010] Furthermore, the second metal friction plate is disposed between the two third baffles, the second metal friction plate is fixedly connected to the third baffles, the second metal friction plate is in frictional contact with the first metal friction plate, and the first metal friction plate and the second metal friction plate are pre-tightened by the second bolt to increase the friction coefficient. During use, the specifications and number of the second bolts can be changed to achieve the friction force design value required by the friction energy dissipation system.

[0011] Furthermore, the second limiting plate is fixedly connected to the outer wall of the inner tube bundle. Multiple second limiting plates are provided on the outer wall of the inner tube bundle. Two second limiting plates form a group, and two second limiting plates are arranged on both sides of the third baffle. The distance between the second limiting plates is the distance that the inner tube bundle can move freely within the friction energy dissipation system. When the moving distance of the inner tube bundle exceeds the distance between the second limiting plates in the same group, one side of the second limiting plate will contact the third baffle, thereby squeezing the third baffle to move, so that the third baffle consumes energy through friction with the first metal friction plate.

[0012] Furthermore, the yield energy dissipation system is located in the inner chamber at the end away from the outer sleeve. The yield energy dissipation system includes: a first metal energy dissipation block, a third bolt, a fourth bolt, a fourth baffle, a third limiting plate, and a fifth baffle. The fourth baffle is fixedly connected to the inner wall of the inner cylinder. One end of the first metal energy dissipation block is fixedly connected to the fourth baffle by the fourth bolt, and the other end of the first metal energy dissipation block is fixedly connected to the fifth baffle by the fourth bolt. The inner tube bundle does not contact the fifth baffle. Multiple second metal energy dissipation blocks are arranged between the fifth baffle and the fourth baffle. One end of the second metal energy dissipation block is fixedly connected to the inner wall of the inner cylinder by the fourth bolt, and the other end of the second metal energy dissipation block is fixedly connected to the fifth baffle by the fourth bolt. Multiple second metal energy dissipation blocks are arranged between the fifth baffle and the inner cylinder.

[0013] Furthermore, the third limiting plate is fixedly connected to the outer wall of the inner tube bundle. Two third limiting plates are provided on the inner tube bundle. The two third limiting plates are respectively located on both sides of the fifth baffle. When the moving distance of the inner tube bundle exceeds the distance between the two third limiting plates, the third limiting plate on one side will contact the fifth baffle, thereby applying pressure or tension to the second metal energy dissipation block and the first metal energy dissipation block through the fifth baffle, and then absorbing energy through the deformation of the second metal energy dissipation block or the first metal energy dissipation block.

[0014] Furthermore, the distance between the third limiting plate and the fifth baffle in the yield energy dissipation system is greater than the distance between the second limiting plate and the third baffle in the friction energy dissipation system, so as to control the sequential activation of the friction energy dissipation system and the yield energy dissipation system.

[0015] The beneficial effects of this utility model compared with the prior art are: (1) This device integrates three mechanisms: disc spring energy dissipation system, friction energy dissipation system and yield energy dissipation system, and consumes and weakens energy by absorbing energy in sequence, thereby providing the maximum damping force. This not only improves the stability of this device when in use, but also improves the damping application range of this device. (2) By installing a first spring and a second spring at both ends of the inner cavity, this device enhances the device’s reset capability and anti-bottoming capability, which conforms to the multi-layered seismic design principle. The energy consumption of each stage is complementary, avoiding the failure of a single mechanism due to overload, and improving the overall seismic robustness.

[0016] (3) This device can adapt to different seismic requirements by adjusting parameters such as disc spring preload, friction plate preload, and metal section cross-sectional dimensions. During the design, the rated value of the structural response under small earthquakes can be determined by adjusting the combination and quantity of disc springs. Furthermore, metal friction plates with different friction coefficients or bolt preload can be used to meet the rated value of the structural response under moderate earthquakes, further expanding the applicability of this device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the disc spring energy dissipation system of this utility model.

[0019] Figure 3 This is a schematic diagram of the friction energy dissipation system of this utility model.

[0020] Figure 4 This is a schematic diagram of the yield energy dissipation system of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the first metal energy-consuming block and the second metal energy-consuming block of this utility model.

[0022] Figure 6 This is a cross-sectional structural diagram of the first and second metal energy-consuming blocks of this utility model.

[0023] Figure 7 This is a schematic diagram of the tensile deformation of the support device of this utility model.

[0024] Reference numerals: 1-Outer sleeve; 2-Inner sleeve; 3-Inner tube bundle; 4-Disc spring energy dissipation system; 41-Disc spring assembly; 42-Threaded steel pipe; 43-First limiting plate; 44-First baffle; 45-First bolt; 46-Second baffle; 5-Friction energy dissipation system; 51-First metal friction plate; 52-Second metal friction plate; 53-Second bolt; 54-Second limiting plate; 55-Third baffle; 6-Yield energy dissipation system; 61-First metal energy dissipation block; 62-Third bolt; 63-Fourth bolt; 64-Fourth baffle; 65-Third limiting plate; 66-Fifth baffle; 67-Second metal energy dissipation block; 7-Ear plate; 8-First spring; 9-Second spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Example 1:

[0027] This embodiment discloses a self-resetting support device based on SMA disc spring friction yield energy dissipation, as shown in the outer sleeve 1. It includes an outer sleeve 1, and an inner sleeve 2 is provided inside the outer sleeve 1. The inner sleeve 2 is composed of six steel plates welded together. For ease of manufacturing, the bottom plate, top plate, and side steel plates can be welded first, and then the top can be sealed. An inner tube bundle 3 is fixedly installed inside the outer sleeve 1. An ear plate 7 is welded to one end of the outer sleeve 1 and an ear plate 7 is welded to one end of the inner sleeve 2. The ear plates 7 are respectively welded to both ends of the device for connecting other equipment. The outer sleeve 1 and the inner sleeve 2 form an inner cavity. A disc spring energy dissipation system 4, a friction energy dissipation system 5, and a yield energy dissipation system 6 are provided in the inner cavity for energy dissipation and vibration reduction. The inner tube bundle 3 is installed through the inner cavity and does not contact the inner sleeve 2. The friction energy dissipation system 5 is located between the disc spring energy dissipation system 4 and the yield energy dissipation system 6. The yield energy dissipation system 6 is located at the end of the inner cavity away from the outer sleeve 1.

[0028] Example 2:

[0029] This embodiment further expands upon the disc spring energy dissipation system 4 described in Embodiment 1. Specifically, as shown in the inner cylinder 2, the disc spring energy dissipation system 4 includes: a disc spring assembly 41, a threaded steel pipe 42, a first limiting plate 43, a first baffle 44, and a first bolt 45. The first limiting plate 43 is fixedly connected to the outer wall of the inner tube bundle 3 to ensure that the first limiting plate 43 and the inner tube bundle 3 move synchronously. The disc spring assembly 41 is symmetrically arranged in the disc spring energy dissipation system 4. The threaded steel pipe 42 passes through the disc spring assembly 41. The two ends of the threaded steel pipe 42 are provided with threaded structures. The threaded structure of the threaded steel pipe 42 is provided with a first bolt 45. The first bolt 45 is used to apply a preload to the disc spring assembly 41. Here, the disc spring assembly 41, the threaded steel pipe 42, and the first bolt 45 can be regarded as a disc spring damping component. One end of the disc spring assembly 41 passes through the threaded steel pipe 42. The first baffle 44 is fixedly connected to the inner wall of the inner cylinder 2. The other end of the threaded steel pipe 42 is fixedly installed with a second baffle 46, which is also fixedly connected to the inner wall of the inner cylinder 2. This can be regarded as setting multiple disc spring damping components inside the inner cylinder 2. The disc spring damping components are fixedly connected to the outer sleeve 1 through the first limiting plate 43 and the inner tube bundle 3. At this time, the disc spring damping components act as a damping device between the outer sleeve 1 and the inner cylinder 2. When vibration is transmitted between the outer sleeve 1 and the inner cylinder 2, energy is consumed through the disc spring damping components.

[0030] Example 3:

[0031] This embodiment further expands the friction energy dissipation system 5 described in Embodiment 1. Specifically, as shown in the inner tube bundle 3 in the figure, the friction energy dissipation system 5 includes: a first metal friction plate 51, a second metal friction plate 52, a second bolt 53, a second limiting plate 54, and a third baffle 55. The first metal friction plate 51 is fixed at both ends to the disc spring energy dissipation system 4 and the yield energy dissipation system 6, respectively. The inner tube bundle 3 passes through the third baffle 55. The outer wall of the inner tube bundle 3 does not contact the third baffle 55. The inner tube bundle 3 and the third baffle 55 can slide relative to each other. The second metal friction plate 52 is disposed between the two third baffles 55. The second metal friction plate 52 is fixedly connected to the third baffle 55. The second metal friction plate 52 is in frictional contact with the first metal friction plate 51. The first metal friction plate 51 and the second metal friction plate 52 are pre-tightened by the second bolt 53 to increase the friction coefficient. In use, the specifications and number of the second bolt 53 can be changed to achieve the friction force design value required by the friction energy dissipation system 5. The second limiting plate 54 is fixedly connected to the outer wall of the inner tube bundle 3. Multiple second limiting plates 54 are provided on the outer wall of the inner tube bundle 3. Two second limiting plates 54 form a group. Two second limiting plates 54 are arranged on both sides of the third baffle 55. The distance between the second limiting plates 54 is the distance that the inner tube bundle 3 can move freely within the friction energy dissipation system 5. When the moving distance of the inner tube bundle 3 exceeds the distance between the second limiting plates 54 in the same group, one side of the second limiting plate 54 will contact the third baffle 55, thereby squeezing the third baffle 55 to move, so that the third baffle 55 consumes energy through friction with the first metal friction plate 51. Example

[0032] This embodiment further expands the friction energy dissipation system 5 described in embodiment 1, specifically as shown in the disc spring energy dissipation system 4 to the yield energy dissipation system 6 in the figure. The yield energy dissipation system 6 includes: a first metal energy dissipation block 61, a third bolt 62, a fourth bolt 63, a fourth baffle 64, a third limiting plate 65, a fifth baffle 66, and a second metal energy dissipation block 67. The fourth baffle 64 is fixedly connected to the inner wall of the inner cylinder 2. One end of the first metal energy-consuming block 61 is fixedly connected to the fourth baffle 64 by the fourth bolt 63, and the other end of the first metal energy-consuming block 61 is fixedly connected to the fifth baffle 66 by the fourth bolt 63. The inner tube bundle 3 does not contact the fifth baffle 66. A plurality of second metal energy-consuming blocks 67 are provided between the fifth baffle 66 and the fourth baffle 64. One end of the second metal energy-consuming block 67 is fixedly connected to the inner wall of the inner cylinder 2 by the fourth bolt 63, and the other end of the second metal energy-consuming block 67 is fixedly connected to the fifth baffle 66 by the fourth bolt 63. A plurality of second metal energy-consuming blocks 67 are provided between the fifth baffle 66 and the inner cylinder 2. The third limiting plate 65 is fixedly connected to the outer wall of the inner tube bundle 3. Two third limiting plates 65 are provided on the inner tube bundle 3. The two third limiting plates 65 are respectively provided on both sides of the fifth baffle 66. When the moving distance of the inner tube bundle 3 exceeds the distance between the two third limiting plates 65, the third limiting plate 65 on one side will contact the fifth baffle 66. In this way, the fifth baffle 66 applies pressure or tension to the second metal energy dissipation block 67 and the first metal energy dissipation block 61, and then absorbs energy through the deformation of the second metal energy dissipation block 67 or the first metal energy dissipation block 61. The first metal energy dissipation block 61 and the second metal energy dissipation block 67 are composed of a cross energy dissipation plate and two steel plates. The cross energy dissipation plate in the first metal energy dissipation block 61 and the second metal energy dissipation block 67 is made of low yield steel, while the two steel plates in the first metal energy dissipation block 61 and the second metal energy dissipation block 67 are made of ordinary steel.

[0033] Example 5:

[0034] This embodiment further expands the inner cavity in embodiment 1, as shown in the outer sleeve 1. The distance between the third limiting plate 65 and the fifth baffle 66 in the yield energy dissipation system 6 is greater than the distance between the second limiting plate 54 and the third baffle 55 in the friction energy dissipation system 5, so as to control the sequential activation of the friction energy dissipation system 5 and the yield energy dissipation system 6. A second spring 9 is installed in the inner cavity. The second spring 9 passes through the inner tube bundle 3 and is installed in the yield energy dissipation system 6. The second spring 9 is installed between the fourth baffle 64 and the third limiting plate 65 to provide bottoming buffer. The first spring 8 is installed at the end where the inner tube bundle 3 connects to the outer sleeve 1. The first spring 8 is used to provide bottoming buffer between the outer sleeve 1 and the disc spring energy dissipation system 4. In the specific setting, it should be noted that the material strength of the first limiting plate 43, the first baffle 44, the second baffle 46, the second limiting plate 54, the third baffle 55, the fourth baffle 64, the third limiting plate 65, and the fifth baffle 66 should be considered for stiffness during use to avoid in-plane buckling during use.

[0035] When this device is in operation, it is connected to external equipment through the ear plate 7. The outer sleeve 1 and the inner sleeve 2 can extend and retract when subjected to force. In the following explanation of this application, the inner sleeve 2 is assumed to be the fixed end, while the outer sleeve 1 is the end that moves under force. In actual use, it can be designed according to actual needs.

[0036] During the minor vibration phase (when the vibration intensity is not high), the outer sleeve 1 will transfer energy to the disc spring energy dissipation system 4 through the inner tube bundle 3. At this time, the first limiting plate 43 in the disc spring energy dissipation system 4 will squeeze or stretch the disc spring assembly 41, thereby allowing the disc spring assembly 41 to absorb the energy brought by the outer sleeve 1. In addition, the disc spring assembly 41 in the disc spring energy dissipation system 4 can automatically reset after the vibration.

[0037] When the displacement of the inner tube bundle 3 exceeds the elastic limit of the disc spring assembly 41, it enters the next stage, where the inner tube bundle 3 will transfer energy to the friction energy dissipation system 5. When the displacement of the inner tube bundle 3 exceeds the damping limit of the friction energy dissipation system 5, the inner tube bundle 3 will transfer energy to the yield energy dissipation system 6. The specific process is as follows: After the inner tube bundle 3 moves to the distance between the second limiting plate 54 in the friction energy dissipation system 5, the second limiting plate 54 will contact the third baffle 55. This transfers the force on the outer sleeve 1 through the inner tube bundle 3, the second limiting plate 54, and the third baffle 55 to the space between the second metal friction plate 52 and the first metal friction plate 51. Energy is dissipated through friction between the second metal friction plate 52 and the first metal friction plate 51. The coefficient of friction between the first metal friction plate 51 and the second metal friction plate 52 can be adjusted by the second bolt 53. As the force on the outer sleeve 1 continues to move the inner tube bundle 3, the second metal friction plate 52 will slide relative to the first metal friction plate 51. When the inner tube bundle 3 moves to the distance between the third limiting plate 65 and the fifth baffle 66, the third limiting plate 65 will contact the fifth baffle 66. The movement of the inner tube bundle 3 drives the third limiting plate 65... When the third limiting plate 65 moves and comes into contact with the fifth baffle 66, the fifth baffle 66 will transmit the force to the first metal energy dissipation block 61 and the second metal energy dissipation block 67. In this way, the force on the outer sleeve 1 is transmitted to the first metal energy dissipation block 61 and the second metal energy dissipation block 67 through the inner tube bundle 3, the third limiting plate 65, and the fifth baffle 66. At this time, the first metal energy dissipation block 61 and the second metal energy dissipation block 67 can undergo elastic deformation after being subjected to force. When the force on the outer sleeve 1 is greater than the yield strength of the first metal energy dissipation block 61 and the second metal energy dissipation block 67, the first metal energy dissipation block 61 and the second metal energy dissipation block 67 will undergo plastic deformation, so that the first metal energy dissipation block 61 and the second metal energy dissipation block 67 can absorb the force transmitted from the outer sleeve 1 through deformation. The first spring 8 and the second spring 9 on the inner tube bundle 3 will bottom out and buffer to prevent the force from further damaging the parts inside the outer sleeve 1 and the inner tube 2.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A self-resetting support device based on the frictional yielding energy dissipation of an SMA disc spring, comprising an outer sleeve (1), characterized in that: The outer sleeve (1) is provided with an inner sleeve (2), and an inner tube bundle (3) is fixedly installed inside the outer sleeve (1). An ear plate (7) is welded to one end of the outer sleeve (1), and an ear plate (7) is welded to one end of the inner sleeve (2). The ear plates (7) are respectively welded to both ends of the device for connecting other equipment. The outer sleeve (1) and the inner sleeve (2) form an inner cavity. The inner cavity is equipped with a disc spring energy dissipation system (4), a friction energy dissipation system (5), and a yield energy dissipation system (6) for energy dissipation and vibration reduction. The inner tube bundle (3) is installed through the inner cavity and does not contact the inner sleeve (2). A second spring (9) is provided in the inner cavity. The second spring (9) passes through the inner tube bundle (3) and is installed in the yield energy dissipation system (6) for bottoming out buffer. The inner cavity is provided with a first spring (8), which is located at the end where the inner tube bundle (3) connects to the outer sleeve (1). The first spring (8) is used to buffer the bottoming of the outer sleeve (1) and the disc spring energy dissipation system (4).

2. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 1, characterized in that: The disc spring energy dissipation system (4) includes: a disc spring assembly (41), a threaded steel pipe (42), a first limiting plate (43), a first baffle (44), and a first bolt (45); The first limiting plate (43) is fixedly connected to the outer wall of the inner tube bundle (3). The disc spring assembly (41) is symmetrically arranged in the disc spring energy dissipation system (4). The threaded steel pipe (42) passes through the disc spring assembly (41). The two ends of the threaded steel pipe (42) are provided with threaded structures. The threaded structure of the threaded steel pipe (42) is provided with a first bolt (45). The first bolt (45) is used to apply a preload to the disc spring assembly (41).

3. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 2, characterized in that: The first baffle (44) is fixedly connected to the inner wall of the inner cylinder (2), and the other end of the threaded steel pipe (42) is fixedly installed with a second baffle (46), which is fixedly connected to the inner wall of the inner cylinder (2).

4. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 1, characterized in that: The friction energy dissipation system (5) is disposed between the disc spring energy dissipation system (4) and the yield energy dissipation system (6). The friction energy dissipation system (5) includes: a first metal friction plate (51), a second metal friction plate (52), a second bolt (53), a second limiting plate (54), and a third baffle (55). The first metal friction plate (51) is fixed at both ends to the disc spring energy dissipation system (4) and the yield energy dissipation system (6) respectively. The inner tube bundle (3) passes through the third baffle (55), and the outer wall of the inner tube bundle (3) does not contact the third baffle (55). The second metal friction plate (52) is disposed between two third baffles (55). The second metal friction plate (52) is fixedly connected to the third baffles (55). The second metal friction plate (52) is in frictional contact with the first metal friction plate (51). The first metal friction plate (51) and the second metal friction plate (52) are pre-tightened by the second bolt (53) to increase the friction coefficient.

5. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 4, characterized in that: The second limiting plate (54) is fixedly connected to the outer wall of the inner tube bundle (3). Multiple second limiting plates (54) are provided on the outer wall of the inner tube bundle (3). The two second limiting plates (54) form a group. The two second limiting plates (54) are arranged on both sides of the third baffle (55). The distance between the second limiting plates (54) is the distance that the inner tube bundle (3) can move freely in the friction energy dissipation system (5).

6. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 1, characterized in that: The yield energy dissipation system (6) is located in the inner cavity at one end away from the outer sleeve (1). The yield energy dissipation system (6) includes: a first metal energy dissipation block (61), a third bolt (62), a fourth bolt (63), a fourth baffle (64), a third limiting plate (65), and a fifth baffle (66). The fourth baffle (64) is fixedly connected to the inner wall of the inner cylinder (2). One end of the first metal energy dissipation block (61) is fixedly connected to the fourth baffle (64) by the fourth bolt (63), and the other end of the first metal energy dissipation block (61) is fixedly connected to the fifth baffle (66). The inner tube bundle (3) is fixedly connected by the fourth bolt (63) and does not contact the fifth baffle (66). A plurality of second metal energy-consuming blocks (67) are provided between the fifth baffle (66) and the fourth baffle (64). One end of the second metal energy-consuming block (67) is fixedly connected to the inner wall of the inner cylinder (2) by the fourth bolt (63), and the other end of the second metal energy-consuming block (67) is fixedly connected to the fifth baffle (66) by the fourth bolt (63). A plurality of second metal energy-consuming blocks (67) are provided between the fifth baffle (66) and the inner cylinder (2).

7. The self-resetting support device based on SMA disc spring frictional yield energy dissipation according to claim 6, characterized in that: The third limiting plate (65) is fixedly connected to the outer wall of the inner tube bundle (3). There are two third limiting plates (65) on the inner tube bundle (3). The two third limiting plates (65) are respectively set on both sides of the fifth baffle (66). When the moving distance of the inner tube bundle (3) exceeds the distance between the two third limiting plates (65), one side of the third limiting plate (65) will contact the fifth baffle (66), thereby applying pressure or tension to the second metal energy dissipation block (67) and the first metal energy dissipation block (61) through the fifth baffle (66).

8. A self-resetting support device based on SMA disc spring frictional yield energy dissipation according to any one of claims 4 or 6, characterized in that: The distance between the third limiting plate (65) and the fifth baffle (66) in the yield energy dissipation system (6) is greater than the distance between the second limiting plate (54) and the third baffle (55) in the friction energy dissipation system (5), so as to control the sequential activation of the friction energy dissipation system (5) and the yield energy dissipation system (6).

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