Damping device with overload protection

Abstract

The application provides a damping device with overload protection, and belongs to the technical field of damping equipment. The damping device comprises a first connecting seat, a second connecting seat, a working damping assembly, an overload protection damping assembly and a connecting plate assembly. The working damping assembly and the overload protection damping assembly are cooperatively operated through the connecting plate assembly. In normal operation, the working damping assembly provides damping, and the overload protection damping assembly does not operate. When the relative movement between parts requiring buffering and energy dissipation exceeds the stress of the working damping assembly, the connecting plate assembly applies the excess load to the overload protection damping assembly, so that the overload protection damping assembly starts to operate to buffer and dissipate energy. The damping device can be applied to different working conditions of different forces, and reduces the damage of excessive relative movement to the structure itself. Thus, the overload protection of the damping device itself and the structure to which the damping device is applied is realized, which is beneficial to the safety and stability of the entire structure.

Description

Technical Field

[0001] This invention belongs to the field of damping equipment technology, and more specifically, relates to a damping device with overload protection. Background Technology

[0002] Dampers limit the forces or displacements acting on a structure through energy dissipation mechanisms, preventing them from exceeding design limits. Dampers typically dissipate energy through friction or displacement limiting to prevent internal forces from exceeding the structure's design bearing capacity.

[0003] In building vibration reduction applications, viscous dampers are velocity-dependent damping products; theoretically, the faster the speed, the greater the damping force. However, when subjected to large external forces, exceeding a certain limit of the damper, it can cause damage to connecting components, sliding bearings, and other related components. A simple viscous damper cannot overcome the damage to connecting components and sliding bearings caused by excessive damping force. Summary of the Invention

[0004] The purpose of this invention is to provide a damping device with overload protection, so as to solve the problem that existing dampers cannot overcome the damage to connecting components caused by excessive damping force during use.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A damping device with overload protection is provided, comprising a first connecting seat, a second connecting seat, a working damping component, an overload protection damping component, and a connecting plate assembly; the second connecting seat and the first connecting seat have a degree of freedom to slide along a first direction; one moving end of the working damping component is connected to the second connecting seat; one moving end of the overload protection damping component is connected to the first connecting seat; the connecting plate assembly is connected to the other moving end of the working damping component and the other moving end of the overload protection damping component respectively; wherein, the overload protection damping component is used to increase the damping force between the first connecting seat and the second connecting seat when the external force is too large.

[0006] In one possible implementation, based on the above technical solutions, the working damping components are multiple components arranged in parallel.

[0007] In one possible implementation, based on the above technical solutions, the first connecting seat includes a first connecting plate and a first limiting plate, the first limiting plate being connected to one moving end of the overload protection damping component; the second connecting seat includes a second connecting plate and a second limiting plate, the second limiting plate being connected to the other moving end of the working damping component.

[0008] In one possible implementation, combining the above technical solutions, the working damping component is a viscous damping component, and the overload protection damping component is a friction damping component.

[0009] In one possible implementation, based on the above technical solutions, the connecting plate assembly includes a connecting plate and two clamping plates, which are respectively fixed on both sides of the connecting plate; the overload protection damping assembly includes a friction plate, a friction plate, an elastic element, and a limiting element, wherein the friction plate is fixed on the connecting plate or the first limiting connecting plate; the friction plate is disposed between the connecting plate and the first limiting connecting plate, and forms a friction pair with the friction plate; the elastic element is disposed on the side of the friction plate facing away from the friction plate to apply pressure to the friction plate; the limiting element is connected to the friction plate and the first limiting connecting plate respectively to restrict the relative movement of the friction plate and the first limiting connecting plate in the first direction; the working damping assembly includes a piston rod and a sleeve, wherein the piston rod is fixedly connected to the second limiting connecting plate and has a piston in the middle; the sleeve is slidably sleeved in the middle of the piston rod and clamped between the two clamping plates, and the sleeve is filled with compressed gas or fluid.

[0010] In one possible implementation, based on the above technical solutions, the connecting plate is provided with a transverse hole arranged along the first direction, the friction plate is provided on the outer periphery of the transverse hole, the limiting member includes a transverse shaft, the transverse shaft passes through the transverse hole and its end is connected to the first limiting connecting plate, and the friction plate is sleeved on the transverse shaft to move along the transverse hole under the limiting of the transverse shaft.

[0011] In one possible implementation, based on the above technical solutions, there are two first limiting connecting plates spaced apart. The connecting plate is located between the two first limiting connecting plates. Both sides of the connecting plate are provided with friction plates, friction plates and elastic elements. The two ends of the transverse shaft are connected to one of the first limiting connecting plates through shaft end fasteners.

[0012] In one possible implementation, based on the above technical solutions, the shaft end fastener is a nut, snap ring, or pin; the elastic element is a spring or elastic rubber ring sleeved on the transverse shaft; the side of the friction plate facing the friction pad has a mirror surface structure; both ends of the piston rod are connected to the second limiting connecting plate by means of threaded fastening, snap-fit, pin connection, or welding; both snap-fit ​​plates are perpendicular to and fixedly connected to the connecting plate; both first limiting connecting plates are perpendicular to and fixedly connected to the first connecting plate; there are two second limiting connecting plates, each connected to one end of the piston rod, and both second limiting connecting plates are perpendicular to and fixedly connected to the second connecting plate; both the first connecting seat and the second connecting seat are steel components, and the first connecting plate and the second connecting plate are also provided with embedded parts.

[0013] In one possible implementation, based on the above technical solutions, the friction plate is fixed on the connecting plate, and the middle and both ends of the side of the friction plate facing the friction plate are not on the same plane; the connecting plate is provided with a corresponding mounting groove, and both ends of the mounting groove are provided with mounting holes, which are used to install top posts. The top posts protrude from the bottom of the mounting groove to abut against the end of the friction plate.

[0014] In one possible implementation, in conjunction with the above technical solutions, the second connecting seat further includes a box-shaped enclosure plate. One end of the box-shaped enclosure plate is connected to the second connecting plate, and the other end extends to the first connecting plate. The working damping component, the overload protection damping component, and the connecting plate component are all located inside the box-shaped enclosure plate. The first connecting plate is provided with a limiting protrusion, and the box-shaped enclosure plate is provided with a sliding groove corresponding to the limiting protrusion.

[0015] The beneficial effects of the overload protection damping device provided by this invention are as follows: Compared with the prior art, before use, the starting damping of the overload protection damping component is selected according to needs, and the first connecting seat and the second connecting seat are connected to the parts that need to be buffered and dissipated, so that the first connecting seat and the second connecting seat move with the parts that need to be buffered and dissipated. During normal operation, the working damping component provides damping, while the overload protection damping component does not operate. When the relative movement between the parts that need to be buffered and dissipated exceeds the force of the working damping component, the connecting plate assembly applies the excess load to the overload protection damping component, causing the overload protection damping component to start operating and perform buffering and dissipation. This invention can be applied to working conditions with different forces, thereby reducing the damage to the structure itself caused by excessive relative movement. In this way, overload protection is achieved for both the damping device itself and the structure to which it is applied, which is beneficial to protecting the safety and stability of the entire structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the main view of the damping device with overload protection provided in an embodiment of the present invention;

[0018] Figure 2 A side-view cross-sectional structural schematic diagram of a damping device with overload protection provided in an embodiment of the present invention;

[0019] Figure 3 A partial front view sectional view of the damping device with overload protection provided in an embodiment of the present invention;

[0020] Figure 4 A partial side-view cross-sectional structural schematic diagram of a damping device with overload protection provided in an embodiment of the present invention;

[0021] Figure 5A schematic cross-sectional view of the connecting plate of the damping device with overload protection provided in an embodiment of the present invention at the part where the friction plate is provided.

[0022] The labels for the attached figures are as follows:

[0023] 10. First connecting seat; 11. First connecting plate; 12. First limiting connecting plate; 20. Second connecting seat; 21. Second connecting plate; 22. Second limiting connecting plate; 23. Box-shaped enclosure plate; 30. Working damping assembly; 31. Piston rod; 32. Sleeve; 40. Overload protection damping assembly; 41. Friction plate; 42. Friction plate; 43. Elastic element; 44. Transverse shaft; 45. Shaft end fastener; 50. Connecting plate assembly; 51. Connecting plate; 511. Mounting groove; 512. Mounting hole; 513. Top column; 52. Clamping plate; 53. Horizontal hole. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0026] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0029] The damping device with overload protection provided by the present invention will now be described.

[0030] like Figures 1 to 5 As shown, the first embodiment of the present invention provides a damping device with overload protection, including a first connecting seat 10, a second connecting seat 20, a working damping component 30, an overload protection damping component 40, and a connecting plate assembly 50; the second connecting seat 20 has a degree of freedom to slide along a first direction with the first connecting seat 10; one moving end of the working damping component 30 is connected to the second connecting seat 20; one moving end of the overload protection damping component 40 is connected to the first connecting seat 10; the connecting plate assembly 50 is connected to the other moving end of the working damping component 30.

[0031] The term "constant damping value" means that the damping value remains within a certain range and does not change significantly with the relative speed between the two moving ends of the overload protection damping assembly 40. Both moving ends of the overload protection damping assembly 40 and the working damping assembly 30 refer to the two ends capable of generating relative motion between them.

[0032] Before use, select the starting damping of the overload protection damping component 40 as needed, and connect the first connecting seat 10 and the second connecting seat 20 to the parts that need to be buffered and dissipated, so that the first connecting seat 10 and the second connecting seat 20 move with the parts that need to be buffered and dissipated.

[0033] During normal operation, the working damping component 30 provides damping, while the overload protection damping component 40 remains inactive. However, when the relative motion between the parts requiring buffering exceeds the stroke of the working damping component 30, the connecting plate assembly 50 applies the excess load to the overload protection damping component 40, causing it to activate and absorb energy. This reduces the relative motion between the parts requiring buffering and energy absorption while preventing irreversible deformation of the working damping component 30 due to excessive relative motion, thus minimizing damage to the structure itself. This achieves overload protection for both the damping device and the structure to which it is applied, contributing to the safety and stability of the entire structure.

[0034] like Figures 1 to 5 As shown, based on the first embodiment, the present invention provides another specific embodiment as follows.

[0035] Multiple working damping components 30 can be arranged in parallel. The starting damping of the overload protection damping component 40 is less than the sum of the maximum working damping values ​​of the multiple working damping components 30. This allows for a more convenient and stable compliance with the working damping range requirements through the parallel connection of multiple sets of working damping components 30, thereby improving the damping effect.

[0036] Similarly, there can be multiple overload protection damping components 40 to form sufficient overload protection damping.

[0037] The specific types of the working damping component 30 and the overload protection damping component 40 can be selected as needed.

[0038] In one specific embodiment, the working damping component 30 is a viscous damping component, and the overload protection damping component 40 is a friction damping component. The output force of the viscous damper is velocity-dependent; the faster the speed, the greater the damping force. The output force of the friction damper is not velocity-dependent, but only pressure-dependent; once the pressure value is set, the output force remains constant.

[0039] Under normal conditions, the viscous damper works and generates damping force. When the speed of motion reaches a certain state, the damping force of the viscous damper exceeds the design value, and the friction damper begins to slide. Because the friction damper is a sliding friction, when a certain pressure is applied, the damping force remains constant. In this way, the entire damping device can maintain a constant force value and no longer increase, thus achieving the function of overload protection.

[0040] This design effectively constitutes a composite damping device of viscous damper and friction damper. By utilizing their similar hysteresis curves, the energy dissipation capacity is increased. The friction damper, when combined with the viscous damper, allows for freely adjustable slip displacement, facilitating installation. Furthermore, by leveraging the different damping characteristics of the viscous and friction damping components, their respective advantages are better utilized. During operation, the viscous damping component initiates first, providing working damping, while the friction damper initiates second-order, increasing the energy dissipation capacity of the damper in the later stages. Simultaneously, it provides a certain degree of stiffness to the structure, enabling it to withstand rare earthquakes and other sudden events.

[0041] Preferably, in this embodiment, multiple first damping components 30 are arranged in parallel to realize multiple sets of dampers connected in parallel, thereby improving the damping effect.

[0042] In some specific embodiments, the first connecting seat 10 includes a first connecting plate 11 and a first limiting connecting plate 12, the first limiting connecting plate 12 being connected to one moving end of the overload protection damping assembly 40; the second connecting seat 20 includes a second connecting plate 21 and a second limiting connecting plate 22, the second limiting connecting plate 22 being connected to the other moving end of the working damping assembly 30.

[0043] The connecting plate assembly 50 includes a connecting plate 51 and two clamping plates 52, which are respectively fixed on both sides of the connecting plate 51.

[0044] The overload protection damping assembly 40 includes a friction plate 41, a friction plate 42, an elastic element 43, and a limiting element. The friction plate 41 is fixed on the connecting plate 51 or the first limiting connecting plate 12. The friction plate 42 is disposed between the connecting plate 51 and the first limiting connecting plate 12 and forms a friction pair with the friction plate 41. The elastic element 43 is disposed on the side of the friction plate 42 facing away from the friction plate 41 to apply pressure to the friction plate 41. The limiting element is connected to the friction plate 42 and the first limiting connecting plate 12 respectively to limit the relative movement of the friction plate 42 and the first limiting connecting plate 12 in the first direction.

[0045] Optionally, in this embodiment, the connecting plate 51 and the friction plate 42 are arranged in parallel, thereby ensuring a stable frictional force between the connecting plate 51 and the friction plate 42.

[0046] The working damping assembly 30 includes a piston rod 31 and a sleeve 32. The piston rod 31 is fixedly connected to the second limiting plate 22 and has a piston in the middle. The sleeve 32 is slidably sleeved in the middle of the piston rod 31 and is locked between two locking plates 52. The sleeve 32 is filled with compressed gas or fluid.

[0047] The connecting plate 51 is provided with a transverse hole 53 arranged along the first direction. The friction plate 41 is provided on the outer periphery of the transverse hole 53. The limiting member includes a transverse shaft 44, which passes through the transverse hole 53 and is connected to the first limiting connecting plate 12 at its end. The friction plate 42 is sleeved on the transverse shaft and is used to move along the transverse hole 53 under the limiting of the transverse shaft 44.

[0048] The first limiting connecting plates 12 are two spaced apart. The connecting plate 51 is located between the two first limiting connecting plates 12. Both sides of the connecting plate 51 are provided with friction plates 41, friction plates 42 and elastic elements 43. The two ends of the transverse shaft are connected to one of the first limiting connecting plates 12 through shaft end fasteners 45.

[0049] In one specific embodiment, the shaft end fastener 45 is a nut, snap ring, or pin, or other form or component capable of fastening and fixing.

[0050] In one specific embodiment, the elastic element 43 is a spring or elastic rubber ring sleeved on the transverse axis.

[0051] In one specific embodiment, the side of the friction plate 42 facing the friction pad 41 has a mirror structure.

[0052] In one specific embodiment, the two ends of the piston rod 31 are connected to the second limiting plate 22 by means of thread fastening, snap-fit, pin connection or welding.

[0053] In one specific embodiment, both card plates 52 are perpendicularly arranged and fixedly connected to the connecting plate 51.

[0054] In one specific embodiment, both first limiting plates 12 are perpendicularly arranged and fixedly connected to the first connecting plate 11.

[0055] In one specific embodiment, there are two second limiting plates 22, each connected to one end of the piston rod 31, and both second limiting plates 22 are perpendicularly arranged and fixedly connected to the second connecting plate 21.

[0056] In one specific embodiment, both the first connecting seat 10 and the second connecting seat 20 are steel components, and the first connecting plate 11 and the second connecting plate 21 are also provided with embedded parts to better connect with concrete structures such as walls.

[0057] To provide better overload protection, the friction plate 41 is fixed to the connecting plate 51, and the middle and both ends of the side of the friction plate 41 facing the friction plate 42 are not on the same plane. This allows the friction plate 41 to be slightly bent, which greatly increases the resistance encountered by the friction plate 42 as it moves to the more protruding position on the friction plate 41. As a result, after the friction plate 42 has moved a certain distance, it can effectively decelerate and provide better overload protection.

[0058] like Figure 5 As shown, in one specific embodiment, the connecting plate 51 is provided with a mounting groove 511, and mounting holes 512 are provided at both ends of the mounting groove 511. A top post 513 is installed in the mounting hole 512, protruding from the bottom of the mounting groove 511 to abut against the end of the friction plate 41. This structure allows the mounting groove 511 to hold the friction plate 41 in place, and adhesive to bond and fill gaps. Simultaneously, the top post 513 ensures that the ends of the friction plates 41 on both sides of the connecting plate 51 are slightly higher than (protruding) from the middle, providing greater resistance when the friction plates 41 slide towards both ends, thus providing better overload protection. Furthermore, since the side of the friction plate 41 facing the friction plate 42 needs to be polished before installation, it is difficult to simultaneously ensure both polishing effect and structural accuracy due to the curvature of the friction plate 41. The above method utilizes the deformation of the material itself, allowing the friction plate 41 to maintain a straight structure during polishing. After installation, the pressure of the friction plate 41 causes its center to be pressed down, naturally creating a certain degree of curvature to meet usage requirements. This also allows the adhesive to fully fill the gaps, providing some support. For different curvature requirements, only the top post 513 of different lengths and shapes need to be replaced.

[0059] In some specific embodiments, the second connecting seat 20 further includes a box-shaped enclosure 23, one end of which is connected to the second connecting plate 21, and the other end extends to the first connecting plate 11. The working damping assembly 30, the overload protection damping assembly 40, and the connecting plate assembly 50 are all located inside the box-shaped enclosure 23.

[0060] In this way, a box-shaped damping wall structure can be formed by the cooperation of the first connecting plate 11, the second connecting plate 21 and the box-shaped enclosure plate 23. It can be used as part of the wall, which not only protects the internal components, but also makes it easier to install and use. In use, the first connecting plate 11 and the second connecting plate 21 can be connected to the two sections of the wall respectively, or connected to the beam and the wall respectively.

[0061] Furthermore, to enhance safety and stability, the first connecting plate 11 is provided with a limiting protrusion, and the box-shaped enclosure 23 is provided with a sliding groove corresponding to the limiting protrusion. Through the cooperation of the limiting protrusion and the sliding groove, the sliding direction between the first connecting seat 10 and the second connecting seat 20 can be limited to avoid sliding in other directions, which could damage the components and affect the use.

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A damping device with overload protection, characterized in that, include: First connecting seat (10); The second connecting seat (20) has a degree of freedom to slide along a first direction with respect to the first connecting seat (10); Working damping assembly (30), one of its moving ends is connected to the second connecting seat (20); An overload protection damping assembly (40) has one of its moving ends connected to the first connecting seat (10); The connecting plate assembly (50) is connected to the other moving end of the working damping assembly (30) and the other moving end of the overload protection damping assembly (40), respectively; The overload protection damping component (40) is used to increase the damping force between the first connecting seat (10) and the second connecting seat (20) when the external force is too large; The first connecting seat (10) includes a first connecting plate (11) and a first limiting connecting plate (12), the first limiting connecting plate (12) being connected to one moving end of the overload protection damping assembly (40); the second connecting seat (20) includes a second connecting plate (21) and a second limiting connecting plate (22), the second limiting connecting plate (22) being connected to the other moving end of the working damping assembly (30); The connecting plate assembly (50) includes: Connecting boards (51); Two clamping plates (52) are respectively fixed on both sides of the connecting plate (51); The overload protection damping assembly (40) includes: Friction plate (41) is fixed on the connecting plate (51); Friction plate (42) is disposed between the connecting plate (51) and the first limiting connecting plate (12), and forms a friction pair with the friction piece (41); An elastic element (43) is provided on the side of the friction plate (42) facing away from the friction piece (41) to apply pressure to the friction piece (41); The limiting member is connected to the friction plate (42) and the first limiting connecting plate (12) respectively, so as to limit the relative movement of the friction plate (42) and the first limiting connecting plate (12) in the first direction; The working damping component (30) includes: The piston rod (31) is fixedly connected to the second limiting plate (22), and a piston is provided in the middle; The sleeve (32) is slidably sleeved in the middle of the piston rod (31) and locked between the two locking plates (52). The sleeve (32) is filled with compressed gas or fluid. The connecting plate (51) is provided with a transverse hole (53) arranged along the first direction, the friction plate (41) is provided on the outer periphery of the transverse hole (53), and the limiting member includes: A transverse shaft (44) passes through the transverse hole (53) and its end is connected to the first limiting plate (12). The friction plate (42) is sleeved on the transverse shaft and is used to move along the transverse hole (53) under the limitation of the transverse shaft (44). The first limiting connecting plate (12) consists of two spaced-apart plates. The connecting plate (51) is located between the two first limiting connecting plates (12). The connecting plate (51) has the friction plate (41), the friction plate (42) and the elastic element (43) on both sides. The two ends of the transverse shaft are connected to one of the first limiting connecting plates (12) through shaft end fasteners (45).

2. The damping device with overload protection as described in claim 1, characterized in that: The working damping components (30) are multiple units arranged in parallel.

3. The damping device with overload protection as described in claim 1, characterized in that, The working damping component (30) is a viscous damping component, and the overload protection damping component (40) is a friction damping component.

4. The damping device with overload protection as described in claim 1, characterized in that: The shaft end fastener (45) is a nut, a retaining ring, or a pin; The elastic element (43) is a spring or elastic rubber ring sleeved on the transverse shaft (44); The side of the friction plate (42) facing the friction piece (41) has a mirror structure; The piston rod (31) is connected to the second limiting plate (22) at both ends by means of thread fastening, snap-fit, pin connection or welding; Both of the card plates (52) are perpendicularly arranged and fixedly connected to the connecting plate (51); Both of the first limiting plates (12) are perpendicularly arranged and fixedly connected to the first connecting plate (11); There are two second limiting plates (22), each of which is connected to one end of the piston rod (31). Both second limiting plates (22) are perpendicularly arranged and fixedly connected to the second connecting plate (21). Both the first connecting seat (10) and the second connecting seat (20) are steel components, and the first connecting plate (11) and the second connecting plate (21) are also provided with embedded parts.

5. The damping device with overload protection as described in claim 4, characterized in that: The friction plate (41) is fixed on the connecting plate (51), and the middle and both ends of the side of the friction plate (41) facing the friction plate (42) are not on the same plane; The connecting plate (51) is provided with a corresponding mounting groove (511), and mounting holes (512) are provided at both ends of the mounting groove (511). The mounting holes (512) are used to install top posts (513). The top posts (513) protrude from the bottom of the mounting groove (511) to abut against the end of the friction plate (41).

6. The damping device with overload protection as described in claim 5, characterized in that, The second connector (20) further includes: The box-shaped enclosure (23) is connected at one end to the second connecting plate (21) and at the other end to the first connecting plate (11). The working damping assembly (30), the overload protection damping assembly (40) and the connecting plate assembly (50) are all located inside the box-shaped enclosure (23). The first connecting plate (11) is provided with a limiting protrusion, and the box-shaped enclosure plate (23) is provided with a sliding groove corresponding to the limiting protrusion.

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