Damping device with overload protection function

Abstract

The invention provides a damping device with overload protection, which belongs to the technical field of damping equipment and comprises a first connecting seat, a second connecting seat, a working damping component, an overload protection damping component and a connecting plate component. Cooperative operation of the working damping assembly and the overload protection damping assembly is achieved through the connecting plate assembly, in the normal working process, the working damping assembly provides damping, and the overload protection damping assembly does not operate; when the relative movement between the parts needing buffering and energy dissipation exceeds the stress of the working damping assembly, the connecting plate assembly acts the exceeded load on the overload protection damping assembly, so that the overload protection damping assembly begins to operate for buffering and energy dissipation, and the device can be suitable for working conditions with different acting forces; damage of acting force generated by overlarge relative movement to a structural body is reduced. In this way, overload protection on the damping device and the applied structural body is achieved, and safety and stability of the whole structural body are protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of damping equipment, and more particularly, relates to a damping device with overload protection. Background Art

[0002] Dampers limit the forces or displacements applied to a structure through energy dissipation, preventing them from exceeding the design allowable values. Dampers typically dissipate energy through friction or displacement limitation, preventing internal forces from exceeding the designed bearing capacity.

[0003] In building vibration reduction applications, viscous dampers are velocity-dependent products. Theoretically, the faster the velocity, the greater the damping force. However, when subjected to large external forces, exceeding a certain limit on the damper, this can cause damage to connected components, such as sliding supports. A simple viscous damper cannot overcome the damage to these components and sliding supports caused by excessive damping forces. Summary of the Invention

[0004] The object of the present invention is to provide a damping device with overload protection to solve the problem in the prior art that the current damper cannot overcome the damage to the connecting components caused by excessive damping force during use.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a damping device with overload protection, including a first connecting seat, a second connecting seat, a working damping assembly, an overload protection damping assembly and a connecting plate assembly; the second connecting seat and the first connecting seat have the freedom to slide along the first direction; one of the moving ends of the working damping assembly is connected to the second connecting seat; one of the moving ends of the overload protection damping assembly is connected to the first connecting seat; the connecting plate assembly is respectively connected to the other moving end of the working damping assembly and the other moving end of the overload protection damping assembly; wherein, the overload protection damping assembly 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 combination with the above technical solution, in a possible implementation, there are multiple working damping components arranged in parallel.

[0007] In combination with the above technical solution, in a possible implementation method, the first connecting seat includes a first connecting plate and a first limiting connecting plate, and the first limiting connecting plate is connected to one moving end of the overload protection damping assembly; the second connecting seat includes a second connecting plate and a second limiting connecting plate, and the second limiting connecting plate is connected to the other moving end of the working damping assembly.

[0008] In combination with the above technical solution, in a possible implementation, the working damping component is a viscous damping component, and the overload protection damping component is a friction damping component.

[0009] In combination with the above technical solution, in a possible implementation manner, the connecting plate assembly comprises a connecting plate and two clamping plates, the two clamping plates are respectively fixed on the two sides of the connecting plate; the overload protection damping assembly comprises a friction plate, a friction plate, an elastic member and a limiting member, the friction plate is fixed on the connecting plate or the first limiting connecting plate; the friction plate is arranged between the connecting plate and the first limiting connecting plate and forms a friction pair with the friction plate; the elastic member is arranged on the side of the friction plate away from the friction plate to apply pressure to the friction plate; the limiting member is connected with the friction plate and the first limiting connecting plate respectively to limit the relative movement of the friction plate and the first limiting connecting plate in the first direction; the working damping assembly comprises a piston rod and a sleeve, the piston rod is fixedly connected with the second limiting connecting plate and has a piston in the middle part; the sleeve is sleeved on the middle part of the piston rod and clamped between the two clamping plates, and the inside of the sleeve is filled with compressed gas or fluid.

[0010] In combination with the above technical solution, in a possible implementation manner, the connecting plate is provided with a horizontal hole arranged in the first direction, the friction plate is arranged on the outer periphery of the horizontal hole, the limiting member comprises a horizontal moving shaft, the horizontal moving shaft passes through the horizontal hole and is connected with the first limiting connecting plate at the end, and the friction plate is sleeved on the horizontal moving shaft to move along the horizontal hole under the limitation of the horizontal moving shaft.

[0011] In combination with the above technical solution, in a possible implementation manner, the first limiting connecting plate is two spaced apart, the connecting plate is located between the two first limiting connecting plates, the connecting plate is provided with a friction plate, a friction plate and an elastic member on the two sides, and the two ends of the horizontal moving shaft are connected with one of the first limiting connecting plates through an axial end fastener.

[0012] In combination with the above technical solution, in a possible implementation manner, the axial end fastener is a nut, a snap ring or a pin; the elastic member is a spring or an elastic rubber ring sleeved on the horizontal moving shaft; the side of the friction plate facing the friction plate is a mirror surface structure; the two ends of the piston rod are connected with the second limiting connecting plate through threaded fastening, clamping, pin connection or welding; the two clamping plates are perpendicularly arranged and fixedly connected with the connecting plate; the two first limiting connecting plates are perpendicularly arranged and fixedly connected with the first connecting plate; the second limiting connecting plate is two and each is connected with one end of the piston rod, and the two second limiting connecting plates are perpendicularly arranged and fixedly connected with the second connecting plate; the first connecting seat and the second connecting seat are steel members, and the first connecting plate and the second connecting plate are further provided with embedded parts.

[0013] In combination with the above technical solution, in a possible implementation manner, the friction plate is fixed on the connecting plate, and the middle part and the two ends of the side of the friction plate facing the friction plate are not on the same plane; the connecting plate is correspondingly provided with a mounting groove, the two ends of the mounting groove are provided with mounting holes, the mounting holes are used to mount jacks, and the jacks protrude from the bottom of the mounting groove to abut against the end of the friction plate.

[0014] In combination with the above technical solution, in a possible implementation manner, the second connecting seat further comprises a box-shaped fence, one end of the box-shaped fence is connected with the second connecting plate, the other end extends to the first connecting plate, and the working damping assembly, the overload protection damping assembly and the connecting plate assembly are all located in the box-shaped fence; the first connecting plate is provided with a limiting protruding strip, and the box-shaped fence is provided with a sliding groove corresponding to the limiting protruding strip.

[0015] The damping device with overload protection provided by the present application has the following advantages: compared with the prior art, before use, the starting damping of the overload protection damping assembly is selected according to needs, and the first connecting seat and the second connecting seat are respectively connected with parts needing to be buffered and energy dissipated, so that the first connecting seat and the second connecting seat respectively follow the movement of the parts needing to be buffered and energy dissipated; in normal working, the working damping assembly provides damping, and the overload protection damping assembly does not work; when the relative movement between the parts needing to be buffered and energy dissipated exceeds the stress of the working damping assembly, the connecting plate assembly acts the excess load on the overload protection damping assembly, so that the overload protection damping assembly starts to work and buffers and dissipates energy, and can be applied to different working conditions of different forces, thereby reducing the damage of the force generated by the excessive relative movement to the structure itself. In this way, 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. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The front view cross-sectional structure schematic diagram of the damping device with overload protection provided by the embodiment of the present application is shown in the figure. Figure 2 The side view cross-sectional structure schematic diagram of the damping device with overload protection provided by the embodiment of the present application is shown in the figure. Figure 3 The partial front view cross-sectional structure schematic diagram of the damping device with overload protection provided by the embodiment of the present application is shown in the figure. Figure 4 The partial side view cross-sectional structure schematic diagram of the damping device with overload protection provided by the embodiment of the present application is shown in the figure. Figure 5 The transverse cross-sectional structure schematic diagram of the connecting plate of the damping device with overload protection provided by the embodiment of the present application at the friction plate part is shown in the figure.

[0018] In the figure, the various reference signs are as follows: 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-type enclosure; 30. Working damping assembly; 31. Piston rod; 32. Sleeve; 40. Overload protection damping assembly; 41. Friction plate; 42. Friction plate; 43. Elastic member; 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. Transverse hole. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the described embodiments are only part of the embodiments of this application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] It should be further explained that the drawings and implementation methods of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0021] When an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] The directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. The terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate the directions or positional relationships based on the directions or positional relationships 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 direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0023] The terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.

[0024] The damping device with overload protection provided by the present application will be described.

[0025] As shown in Figures 1 to 5 The first embodiment of the present application provides a damping device with overload protection, which comprises a first connecting seat 10, a second connecting seat 20, a working damping assembly 30, an overload protection damping assembly 40 and a connecting plate assembly 50. The second connecting seat 20 has a sliding degree along a first direction with the first connecting seat 10. One of the moving ends of the working damping assembly 30 is connected with the second connecting seat 20. One of the moving ends of the overload protection damping assembly 40 is connected with the first connecting seat 10. The connecting plate assembly 50 is connected with the other moving end of the working damping assembly 30 and the other moving end of the working damping assembly 30 respectively.

[0026] The constant damping value means that the damping value is kept within a certain range and does not change significantly with the change of the relative movement speed between the two moving ends of the overload protection damping assembly 40. The two moving ends of the overload protection damping assembly 40 and the working damping assembly 30 mean the two ends that can produce relative movement between each other.

[0027] Before use, the starting damping of the overload protection damping assembly 40 is selected according to the needs, and the first connecting seat 10 and the second connecting seat 20 are connected with the parts that need to be buffered and energy dissipated respectively, so that the first connecting seat 10 and the second connecting seat 20 move with the parts that need to be buffered and energy dissipated respectively.

[0028] In normal operation, the working damping assembly 30 provides damping, while the overload protection damping assembly 40 does not operate. When the relative movement between the parts that need to be buffered exceeds the stroke of the working damping assembly 30, the connecting plate assembly 50 acts the excess load on the overload protection damping assembly 40, so that the overload protection damping assembly 40 starts to operate, buffers and dissipates energy, reduces the relative movement between the parts that need to be buffered and energy dissipated, and avoids the irreversible deformation of the working damping assembly 30 caused by the excessive relative movement between the parts that need to be buffered and energy dissipated, thereby reducing the damage of the excessive relative movement to the structure itself. In this way, the overload protection of the damping device itself and the structure to which it is applied is realized, which is beneficial to the safety and stability of the entire structure.

[0029] As Figures 1 to 5 The application provides a specific embodiment based on the first embodiment.

[0030] The working damping assembly 30 can be multiple parallel arrangements, and the starting damping of the overload protection damping assembly 40 is less than the sum of the maximum values of the working dampings of the multiple working damping assemblies 30. In this way, the working damping range requirement can be more conveniently and stably met by connecting the multiple working damping assemblies 30 in parallel, thereby improving the damping effect.

[0031] Similarly, the overload protection damping assembly 40 can also be multiple to form sufficient overload protection damping.

[0032] The specific types of the working damping assembly 30 and the overload protection damping assembly 40 can be selected as required.

[0033] In a specific embodiment, the working damping assembly 30 is a viscous damping assembly, and the overload protection damping assembly 40 is a friction damping assembly. The output of the viscous damper is speed-dependent, and the faster the speed, the greater the damping force; the output of the friction damper is not related to the speed, but is related to the pressure, and the output is constant after the pressure value is set.

[0034] In a normal state, the viscous damper works to generate a damping force, and when the movement speed reaches a certain state, the friction damper starts to slide after the damping force of the viscous damper exceeds the design value. Because the friction damper is sliding friction, the damping force is constant under a certain pressure. In this way, the entire damping device can maintain a constant force value and no longer increase, thereby achieving the function of overload protection.

[0035] This form actually constitutes a viscous damper-friction damper composite damping device. The similar hysteresis curve form is used to increase the energy dissipation capacity. The friction damper is freely set to slide at a displacement, which is convenient for installation. Meanwhile, the damping characteristics of the viscous damping assembly and the friction damping assembly are different, and the advantages of each are better utilized. In this way, the viscous damping assembly is started first to provide working damping, and the friction damper is started second to increase the energy dissipation capacity of the damper in the later period and provide a certain stiffness for the structure, which can resist rare earthquakes and other emergencies.

[0036] Preferably, in the embodiment, the first damping assembly 30 is multiple parallel arrangements to realize the connection of multiple dampers in parallel, thereby improving the damping effect.

[0037] In some specific embodiments, the first connecting seat 10 includes a first connecting plate 11 and a first limiting connecting plate 12, and the first limiting connecting plate 12 is connected with one movement 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, and the second limiting connecting plate 22 is connected with the other movement end of the working damping assembly 30.

[0038] The connecting plate assembly 50 includes a connecting plate 51 and two clamping plates 52 . The two clamping plates 52 are fixed on both sides of the connecting plate 51 .

[0039] The overload protection damping assembly 40 includes a friction plate 41, a friction plate 42, an elastic member 43 and a limit member. The friction plate 41 is fixed on the connecting plate 51 or the first limit connecting plate 12; the friction plate 42 is arranged between the connecting plate 51 and the first limit connecting plate 12, and forms a friction pair with the friction plate 41; the elastic member 43 is arranged on the side of the friction plate 42 facing away from the friction plate 41 to apply pressure to the friction plate 41; the limit member is respectively connected to the friction plate 42 and the first limit connecting plate 12 to limit the relative movement of the friction plate 42 and the first limit connecting plate 12 in the first direction.

[0040] Optionally, in this embodiment, the connecting plate 51 and the friction plate 42 are arranged in parallel, so that the friction force between the connecting plate 51 and the friction plate 42 is stable.

[0041] 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 link plate 22 and has a piston in the middle. The sleeve 32 is slidably sleeved in the middle of the piston rod 31 and clamped between the two clamping plates 52. The interior of the sleeve 32 is filled with compressed gas or fluid.

[0042] A transverse hole 53 is provided on the connecting plate 51 along the first direction, and the friction plate 41 is provided on the outer periphery of the transverse hole 53. The limiting component includes a transverse shaft 44, which passes through the transverse hole 53 and the end of which is connected to the first limiting connecting plate 12. The friction plate 42 is sleeved on the transverse shaft for moving along the transverse hole 53 under the limitation of the transverse shaft 44.

[0043] There are two first limit connecting plates 12 arranged at intervals, and the connecting plate 51 is located between the two first limit connecting plates 12. Friction plates 41, friction plates 42 and elastic parts 43 are provided on both sides of the connecting plate 51. The two ends of the transverse shaft are each connected to one of the first limit connecting plates 12 through an axis end fastener 45.

[0044] In a specific embodiment, the shaft end fastener 45 is a form or component that can be fastened and fixed, such as a nut, a snap ring, or a pin.

[0045] In a specific embodiment, the elastic member 43 is a spring or an elastic rubber ring sleeved on the transverse shaft.

[0046] In a specific embodiment, the side of the friction plate 42 facing the friction plate 41 is a mirror structure.

[0047] In a specific embodiment, both ends of the piston rod 31 are connected to the second limiting link plate 22 by threaded fastening, clamping, pinning or welding.

[0048] In a specific embodiment, the two clamping plates 52 are both vertically arranged and fixedly connected to the connecting plate 51 .

[0049] In a specific embodiment, the two first limiting connecting plates 12 are both vertically arranged and fixedly connected to the first connecting plate 11 .

[0050] In a specific embodiment, there are two second position-limiting connecting plates 22 , each of which is connected to one end of the piston rod 31 . The two second position-limiting connecting plates 22 are both vertically arranged and fixedly connected to the second connecting plate 21 .

[0051] In a specific embodiment, the first connecting seat 10 and the second connecting seat 20 are both made of steel components, and the first connecting plate 11 and the second connecting plate 21 are further provided with embedded parts to better connect with concrete structures such as walls.

[0052] To provide better overload protection, the friction plate 41 is fixed to the connecting plate 51, and the middle and ends of the friction plate 41 facing the friction plate 42 are not in the same plane. This allows the friction plate 41 to be slightly curved, significantly increasing the resistance encountered by the friction plate 42 as it moves to a more convex position on the friction plate 41. This effectively reduces speed after the friction plate 42 has moved a certain distance, providing better overload protection.

[0053] like Figure 5 As shown, in one specific embodiment, the connecting plate 51 is provided with corresponding mounting grooves 511, with mounting holes 512 at both ends of the mounting grooves 511. The mounting holes 512 are used to mount top posts 513. The top posts 513 protrude from the bottom of the mounting grooves 511 to abut against the ends of the friction plates 41. This structure allows the mounting grooves 511 to hold the friction plates 41 in place, with adhesive used to secure and fill gaps. Furthermore, the top posts 513 ensure that the ends of the friction plates 41 on either side of the connecting plate 51 are slightly higher (protruding from) the center, providing greater resistance when the friction plates 41 slide toward the ends, thereby providing better overload protection. Furthermore, since the side of the friction plate 41 facing the friction plate 42 requires grinding and polishing before installation, it is difficult to simultaneously achieve both polishing quality and structural accuracy with a curvature of the friction plate 41. The aforementioned method utilizes the inherent deformation of the material to maintain a straight structure during grinding and polishing. After installation, the pressure of the friction plate 41 pushes the center portion downward, naturally creating a certain degree of curvature to meet operational requirements. This also allows the adhesive to fully fill the gaps and provide a certain degree of support. To meet varying curvature requirements, simply replace the top post 513 with a different length and shape.

[0054] In some specific embodiments, the second connecting seat 20 also includes a box-shaped enclosure 23, one end of the box-shaped enclosure 23 is connected to the second connecting plate 21, and the other end extends to the first connecting plate 11, and the working damping assembly 30, the overload protection damping assembly 40 and the connecting plate assembly 50 are all located in the box-shaped enclosure 23.

[0055] In this way, a box-type damping wall structure can be formed only by cooperating with the first connecting plate 11, the second connecting plate 21 and the box-type enclosure 23. It can be used as a part of the wall, which not only protects the internal components but also is easier to install and use. When in use, the first connecting plate 11 and the second connecting plate 21 can be used to connect to the two sections of the wall respectively, or to connect to the beam and the wall respectively.

[0056] Furthermore, in order to improve safety and stability, a limiting ridge is provided on the first connecting plate 11, and a sliding groove corresponding to the limiting ridge is provided on the box-shaped enclosure 23. Through the cooperation of the limiting ridge 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 may cause damage to the components therein and affect use.

[0057] The above are only 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 in the scope of protection of the present invention.

Claims

1. A damping device with overload protection, characterized in that: include: A first connecting seat (10); A second connecting seat (20) having a degree of freedom to slide along a first direction with the first connecting seat (10); A working damping assembly (30), wherein one moving end is connected to the second connecting seat (20); An overload protection damping assembly (40), wherein one moving end is connected to the first connecting seat (10); A connecting plate assembly (50) is respectively connected to the other moving end of the working damping assembly (30) and the other moving end of the overload protection damping assembly (40); The overload protection damping assembly (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.

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

3. The damping device with overload protection according to claim 1, characterized in that: The first connecting seat (10) comprises a first connecting plate (11) and a first limiting connecting plate (12), wherein the first limiting connecting plate (12) is connected to one moving end of the overload protection damping assembly (40); the second connecting seat (20) comprises a second connecting plate (21) and a second limiting connecting plate (22), wherein the second limiting connecting plate (22) is connected to the other moving end of the working damping assembly (30).

4. The damping device with overload protection according to claim 3, 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.

5. The damping device with overload protection according to claim 3 or 4, characterized in that: The connecting plate assembly (50) includes: Lianban (51); Two clamping plates (52) are respectively fixed on both sides of the connecting plate (51); The overload protection damping component (40) comprises: A friction plate (41) is fixedly mounted on the connecting plate (51) or the first limiting connecting plate (12); a friction plate (42) disposed between the connecting plate (51) and the first limiting connecting plate (12), and forming a friction pair with the friction plate (41); an elastic member (43) provided on a side of the friction plate (42) facing away from the friction plate (41) to apply pressure to the friction plate (41); a limiting member 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 assembly (30) comprises: A piston rod (31) is fixedly connected to the second limiting link plate (22) and has a piston in the middle; The sleeve (32) is slidably sleeved on the middle part of the piston rod (31) and clamped between the two clamping plates (52). The interior of the sleeve (32) is filled with compressed gas or fluid.

6. The damping device with overload protection according to claim 5, characterized in that: The connecting plate (51) is provided with a transverse hole (53) arranged along a first direction, the friction plate (41) is arranged on the outer periphery of the transverse hole (53), and the limiting member includes: The transverse shaft (44) passes through the transverse hole (53), and the end portion is connected to the first limiting connecting 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).

7. The damping device with overload protection according to claim 6, characterized in that: The first limiting connecting plates (12) are arranged in two intervals, the connecting plate (51) is located between the two first limiting connecting plates (12), the friction plate (41), the friction plate (42) and the elastic member (43) are provided on both sides of the connecting plate (51), and the two ends of the transverse shaft are connected to one of the first limiting connecting plates (12) via shaft end fasteners (45).

8. The damping device with overload protection according to claim 7, characterized in that: The shaft end fastener (45) is a nut, a snap ring or a pin; The elastic member (43) is a spring or an elastic rubber ring sleeved on the transverse shaft (44); The side of the friction plate (42) facing the friction plate (41) is a mirror structure; Both ends of the piston rod (31) are connected to the second limit link plate (22) by means of thread fastening, clamping, pinning or welding; The two clamping plates (52) are both arranged vertically and fixedly connected to the connecting plate (51); The two first limiting connecting plates (12) are both vertically arranged and fixedly connected to the first connecting plate (11); There are two second limiting connecting plates (22), each of which is connected to one end of the piston rod (31), and the two second limiting connecting plates (22) are vertically arranged and fixedly connected to the second connecting plate (21); The first connecting seat (10) and the second connecting seat (20) are both steel components, and the first connecting plate (11) and the second connecting plate (21) are also provided with embedded parts.

9. The damping device with overload protection according to claim 8, characterized in that: The friction plate (41) is fixed on the connecting plate (51), and the middle portion and both ends 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). A top column (513) is installed in the mounting hole (512), and the top column (513) protrudes from the bottom of the mounting groove (511) to abut against the end of the friction plate (41).

10. The damping device with overload protection according to claim 8, characterized in that: 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 of which extends to the first connecting plate (11), wherein the working damping assembly (30), the overload protection damping assembly (40) and the connecting plate assembly (50) are all located in the box-shaped enclosure (23); The first connecting plate (11) is provided with a limiting convex strip, and the box-shaped enclosure (23) is provided with a sliding groove corresponding to the limiting convex strip.

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