Multi-stage adjusting composite damping device
Through a multi-order adjustment composite damping device, combined with friction damping and viscous damping components, the buffering and energy dissipation of multi-order stiffness is achieved, which solves the problem that existing dampers are difficult to cope with complex vibration displacements and improves installation accuracy and safety.
Patent Information
- Application Number
- CN202422219742.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing building dampers have a single function and are difficult to cope with complex vibration displacement situations.
The multi-order adjustment composite damping device is adopted, including a first connecting seat, a second connecting seat, a first damping assembly and a second damping assembly. Through the design of sliding freedom and limiting grooves, combined with friction damping and viscous damping components, the buffering and energy dissipation effect of multi-order stiffness is achieved.
Provides a smaller energy dissipation effect when moving in a small range, and provides a greater energy dissipation effect when moving in a large range, solving the problem of small initial energy consumption or rare earthquakes increasing stiffness, improving installation accuracy control, and avoiding the potential for installation offset of traditional dampers.
Smart Images
Figure CN223074957U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of damping devices, and more specifically, it relates to a multi-stage adjustable composite damping device. Background Technique
[0002] A damper is a common buffer and energy dissipation component. In some buildings such as houses, road bridges, and water conservancy projects, dampers are often required to offset the impact of earthquakes or other vibration displacements on the buildings. However, current building dampers usually directly connect a single form of damping component to the parts that need to buffer and dissipate energy. However, this form of damper has a relatively single function, and its buffer and energy dissipation effect is basically linear, making it difficult to cope with relatively complex vibration displacement situations. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a multi-stage adjustable composite damping device to solve the technical problem in the existing technology that current dampers are difficult to cope with relatively complex vibration displacement situations.
[0004] To achieve the above object, the technical solution adopted by the utility model is: to provide a multi-stage adjustable composite damping device, including a first connection seat, a second connection seat, a first damping component, and a second damping component. There is a degree of freedom for sliding along a first direction between the second connection seat and the first connection seat, and a starting-sliding limit groove is provided. The first damping component has two connection ends, and relative movement can occur between the two connection ends along the first direction to generate damping, and the two connection ends are respectively fixedly connected to the first connection seat and the second connection seat. The second damping component has two connection ends, and relative movement can occur between the two connection ends along the first direction to generate damping, and one of the connection ends is fixedly connected to the first connection seat, and the other connection end is in sliding fit with the starting-sliding limit groove of the second connection seat along the first direction, and the sliding stroke is greater than or equal to zero.
[0005] Combined with the above technical solution, in a possible implementation manner, the second damping component is a friction damping component, the first damping component is a viscous damping component; multiple first damping components are arranged in parallel.
[0006] Combined with the above technical solution, in a possible implementation manner, the first connection seat includes a first connection plate and a limit tenon component, and the limit tenon component is fixedly connected to the first connection plate; the second connection seat includes a second connection plate and a box-shaped enclosure, and the box-shaped enclosure is fixedly connected to the second connection plate. The first damping component, the second damping component, and the limit tenon component are all located inside the box-shaped enclosure; and the two connection ends of the first damping component are respectively connected to the limit tenon component and the box-shaped enclosure, the two connection ends of the second damping component are also respectively connected to the limit tenon component and the box-shaped enclosure, and the starting-sliding limit groove is provided on the box-shaped enclosure.
[0007] Combined with the above technical solution, in a possible implementation, the limit tenon assembly includes a base plate, the base plate is fixedly connected to the first connecting plate, and the base plate has a chute arranged along the first direction; the second damping assembly includes a sliding shaft, a friction plate, a friction sheet, an elastic member, a lifting slider and two fasteners, the sliding shaft passes through the chute and is slidably matched with the chute; the friction plate is arranged on the base plate and is located outside the chute; the friction sheet is sleeved on the sliding shaft and forms a sliding friction pair with the friction plate; the elastic member is arranged on the side of the friction sheet facing away from the friction plate to apply pressure to the friction sheet; the lifting slider is sleeved on the sliding shaft and is located on the side of the elastic member facing away from the friction sheet, and the outer end of the lifting slider is arranged in the lifting limit groove; the two fasteners are respectively located at both ends of the sliding shaft to press the base plate, the friction plate, the friction sheet, the elastic member and the lifting slider tightly; wherein, the friction plate is one connecting end of the second damping assembly, and the lifting slider is the other connecting end of the second damping assembly.
[0008] Combined with the above technical solution, in a possible implementation, there are two friction plates, two friction sheets, two elastic members and two lifting sliders, and they are respectively located on both sides of the base plate; the elastic member is a spring or an elastic rubber ring sleeved on the sliding shaft; the fastener is a nut, a snap ring or a pin; the side of the friction plate facing the friction sheet is a mirror structure.
[0009] Combined with the above technical solution, in a possible implementation, the limit tenon assembly further includes two clamping plates, the two clamping plates are respectively located on both sides of the base plate and are fixedly connected to the base plate; the first damping assembly includes a piston rod and a sleeve, the piston rod is fixedly connected to the box-shaped enclosure and is provided with a piston in the middle; the sleeve is slidably sleeved on the middle of the piston rod and is located between the two clamping plates, and compressed gas or fluid is provided inside the sleeve.
[0010] Combined with the above technical solution, in a possible implementation, both of the two clamping plates are perpendicular to the base plate and are fixedly connected to the first connecting plate; both ends of the piston rod are connected to the box-shaped enclosure by means of fastening, clamping, pinning or welding through bolt adjusting nuts.
[0011] Combined with the above technical solution, in a possible implementation, there are multiple second damping assemblies, and the second connecting seat is provided with multiple lifting limit grooves corresponding to the second damping assemblies one by one, and the sliding strokes between different second damping assemblies and the corresponding lifting limit grooves are different.
[0012] Combined with the above technical solution, in a possible implementation, both the first connecting seat and the second connecting seat are steel components, and embedded parts are further provided on the first connecting plate and the second connecting plate.
[0013] Combined with the above technical solution, in a possible implementation, the first connecting plate is provided with a limit rib, and the box-shaped enclosure is provided with a chute corresponding to the limit rib.
[0014] The beneficial effects of the multi-stage adjustable composite damping device provided by the present utility model are as follows: Compared with the prior art, through the cooperation of the first connecting seat, the second connecting seat, the first damping component and the second damping component, the present utility model can form a composite velocity-type damper with additional multi-stage stiffness; it can solve the problem of small initial energy consumption or the energy-consuming characteristics of increasing stiffness in rare earthquakes, facilitate the installation of products, ensure the control of the installation accuracy of products, and avoid the potential safety hazards caused by uneven force on the embedded parts due to the offset of the installation axis of traditional dampers, large horizontal deviation, and small size of the gusset plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0016] Figure 1 It is a front view sectional structure schematic diagram of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model;
[0017] Figure 2 It is a side view sectional structure schematic diagram of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model;
[0018] Figure 3 It is a front view sectional structure schematic diagram of the main part of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model without the second damping component;
[0019] Figure 4 It is a side view sectional structure schematic diagram of the first connecting seat part of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model;
[0020] Figure 5 It is a side view sectional structure schematic diagram of the second connecting seat part of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model;
[0021] Figure 6 It is a front view sectional structure schematic diagram of the second connecting seat of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model when the starting slip displacement (i.e., the sliding stroke) is equal to zero;
[0022] Figure 7 It is a front view sectional structure schematic diagram of the second connecting seat of the multi-stage adjustable composite damping device provided by the embodiment of the present utility model when the starting slip displacement (i.e., the sliding stroke) is greater than zero;
[0023] Figure 8Schematic cross-sectional view in the front view direction of the multi-stage adjustable composite damping device provided by another embodiment of the present utility model.
[0024] Among them, the reference numerals in the figure are as follows:
[0025] 10. First connection seat; 11. First connection plate; 12. Substrate; 13. Slide groove; 14. Clamping plate;
[0026] 20. Second connection seat; 21. Second connection plate; 22. Box-shaped enclosing plate; 23. Starting slide limiting groove;
[0027] 30. First damping assembly; 31. Piston rod; 32. Sleeve;
[0028] 40. Second damping assembly; 41. Sliding shaft; 42. Friction plate; 43. Friction sheet; 44. Elastic member; 45. Starting slider; 46. Fastener. Detailed implementation manners
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0030] It should be further noted that the drawings and embodiments of the present utility model mainly describe and explain the concept of the present utility model. 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 completely described. However, on the premise that those skilled in the art understand the concept of the present utility model, those skilled in the art can adopt well-known ways to implement the above specific forms and settings.
[0031] 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.
[0032] The orientation terms "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. The orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0033] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more, unless otherwise specifically defined.
[0034] Now, the multi-stage adjustable composite damping device provided by the present utility model will be described.
[0035] As Figures 1 to 3 shown, the first embodiment of the present utility model provides a multi-stage adjustable composite damping device, including a first connecting seat 10, a second connecting seat 20, a first damping assembly 30, and a second damping assembly 40. There is a degree of freedom for sliding in the first direction between the second connecting seat 20 and the first connecting seat 10, and a starting-sliding limiting groove 23 is provided; the first damping assembly 30 has two connecting ends, and relative movement can occur between the two connecting ends in the first direction to generate damping, and the two connecting ends are respectively fixedly connected to the first connecting seat 10 and the second connecting seat 20; the second damping assembly 40 has two connecting ends, and relative movement can occur between the two connecting ends in the first direction to generate damping, and one of the connecting ends is fixedly connected to the first connecting seat 10, and the other connecting end is in sliding fit with the starting-sliding limiting groove 23 of the second connecting seat 20 in the first direction, and the sliding stroke is greater than or equal to zero. The fixed connection includes the form of limiting connection or limiting fit.
[0036] During use, select the sliding stroke between the second damping assembly 40 and the starting-sliding limiting groove 23 as needed, and then respectively connect the first connecting seat 10 and the second connecting seat 20 to the parts that need to perform buffering and energy dissipation, so that the first connecting seat 10 and the second connecting seat 20 respectively follow the movement of the parts that need to perform buffering and energy dissipation;
[0037] As Figure 6As shown, when the sliding stroke between the selected second damping component 40 and the starting-sliding limit groove 23 is zero, the relative movement of the first connecting seat 10 and the second connecting seat 20 causes the first damping component 30 and the second damping component 40 to move simultaneously for buffering and energy dissipation.
[0038] And as Figure 7 shown, when the sliding stroke between the selected second damping component 40 and the starting-sliding limit groove 23 is greater than zero, the relative movement of the first connecting seat 10 and the second connecting seat 20 first drives the first damping component 30 to move for buffering and energy dissipation; after the relative movement between the first connecting seat 10 and the second connecting seat 20 is greater than the sliding stroke between the second damping component 40 and the starting-sliding limit groove 23, the second damping component 40 also starts to move for buffering and energy dissipation.
[0039] In this way, multi-stage adjustment of buffering and energy dissipation can be achieved, that is, during small-range movement, it has a small energy dissipation effect, while during large-range movement, it will have a greater energy dissipation effect, thereby blocking the continuous movement and playing a good role in buffering and energy dissipation.
[0040] Compared with the prior art, the multi-stage adjustment composite damping device provided in this embodiment can form a composite velocity-type damper with additional multi-stage stiffness through the cooperation of the first connecting seat 10, the second connecting seat 20, the first damping component 30, the second damping component 40 and the limit tenon component; it can solve the problem of small initial energy consumption or the energy consumption characteristics of increasing stiffness in rare earthquakes, facilitate the installation of products, ensure the control of the installation accuracy of products, and avoid the potential safety hazards caused by uneven force on the embedded parts due to the offset of the installation axis of traditional dampers, large horizontal deviation, and small size of the gusset plate.
[0041] As Figures 1 to 7 shown, a specific implementation manner provided by the present utility model on the basis of the first implementation manner is as follows.
[0042] The second damping component 40 is a friction damping component, and the first damping component 30 is a viscous damping component.
[0043] In some specific embodiments, as Figure 8 shown, the first damping components 30 are arranged in parallel in multiple numbers to realize the parallel connection of multiple groups of dampers, thereby enhancing the blocking effect.
[0044] This form actually provides a velocity-type damper that combines a viscous damper and a friction damper. By utilizing its similar hysteretic curve form, the energy dissipation capacity is increased. The friction damper can be compounded into the viscous damper, and the slip displacement can be freely set, that is, the above-mentioned sliding stroke. When the slip displacement is zero, the friction damper and the viscous damper move synchronously, increasing the initial energy dissipation capacity and solving the clearance problem of the viscous damper at small displacements. When the slip displacement is greater than zero, the friction damper starts secondarily, increasing the energy dissipation capacity of the damper in the later stage and providing a certain stiffness for the structure. Ultimately, it can solve the energy dissipation characteristics of small initial energy dissipation or increasing stiffness in rare earthquakes.
[0045] In some specific embodiments, the first connection seat 10 includes a first connecting plate 11 and a limit tenon assembly, and the limit tenon assembly is fixedly connected to the first connecting plate 11; the second connection seat 20 includes a second connecting plate 21 and a box-shaped enclosure 22, and the box-shaped enclosure 22 is fixedly connected to the second connecting plate 21. The first damper assembly 30, the second damper assembly 40, and the limit tenon assembly are all located inside the box-shaped enclosure 22; and the two connecting ends of the first damper assembly 30 are respectively connected to the limit tenon assembly and the box-shaped enclosure 22, and the two connecting ends of the second damper assembly 40 are also respectively connected to the limit tenon assembly and the box-shaped enclosure 22. The slip limit groove 23 is provided on the box-shaped enclosure 22.
[0046] In this way, only through the cooperation of the first connecting plate 11, the second connecting plate 21, and the box-shaped enclosure 22, a box-shaped damping wall structure can be formed, which can be used as a part of the wall. It can not only protect the internal components but also be more convenient for installation and use. During use, it can be connected to two sections of the wall respectively through the first connecting plate 11 and the second connecting plate 21, or connected to the beam and the wall respectively.
[0047] In addition, in some other specific embodiments, the structures of the first connection seat 10 and the second connection seat 20 can be interchanged. That is, compared with the above embodiment, the first connection seat 10 includes the second connecting plate 21 and the box-shaped enclosure 22, and the second connection seat 20 includes the first connecting plate 11 and the limit tenon assembly. The slip limit groove 23 is provided on the limit tenon assembly. However, for the convenience of describing the specific structure, the specific structure will be introduced based on the previous embodiment below.
[0048] Such as Figure 1 and Figure 2As shown in the figure, the limit latch assembly includes a base plate 12, which is fixedly connected to the first connecting plate 11. The base plate 12 has a sliding groove 13 arranged in the first direction; the second damping assembly 40 includes a sliding shaft 41, a friction plate 42, a friction sheet 43, an elastic member 44, a lifting slider 45 and two fasteners 46. The sliding shaft 41 passes through the sliding groove 13 and is slidably matched with the sliding groove 13; the friction plate 42 is arranged on the base plate 12 and is located outside the sliding groove 13; the friction sheet 43 is sleeved on the sliding shaft 41 and cooperates with the friction plate 42 to form a sliding friction pair; the elastic member 44 is arranged on the side of the friction sheet 43 facing away from the friction plate 42 to apply pressure to the friction sheet 43; the lifting slider 45 is sleeved on the sliding shaft 41 and is located on the side of the elastic member 44 facing away from the friction sheet 43. The outer end of the lifting slider 45 is arranged in the starting sliding limit groove 23; the two fasteners 46 are respectively located at both ends of the sliding shaft 41 to press the base plate 12, the friction plate 42, the friction sheet 43, the elastic member 44 and the lifting slider 45 tightly; wherein, the friction plate 42 is one connection end of the second damping assembly 40, and the lifting slider 45 is the other connection end of the second damping assembly 40.
[0049] During use, when the displacement of the relative movement between the first connecting seat 10 and the second connecting seat 20 is within the sliding stroke range between the second damping assembly 40 and the starting sliding limit groove 23, due to the large frictional force between the friction sheet 43 and the friction plate 42 under the pressure of the elastic member 44, the lifting slider 45 will move back and forth in the starting sliding limit groove 23, so that only the first damping assembly 30 participates in buffering and energy dissipation, while the second damping assembly 40 does not participate in buffering and energy dissipation;
[0050] When the displacement of the relative movement between the first connecting seat 10 and the second connecting seat 20 exceeds the sliding stroke range between the second damping assembly 40 and the starting sliding limit groove 23, the lifting slider 45 abuts against one side of the starting sliding limit groove 23, causing relative movement between the friction sheet 43 and the friction plate 42, so that the second damping assembly 40 participates in buffering and energy dissipation.
[0051] Furthermore, there are two friction plates 42, friction sheets 43, elastic members 44 and lifting sliders 45, which are respectively located on both sides of the base plate 12 to obtain more balanced frictional force and improve the effect of buffering and energy dissipation; the elastic member 44 is a spring or an elastic rubber ring sleeved on the sliding shaft 41. In a specific embodiment, the elastic member 44 adopts a disc spring; the fastener 46 is in the form or component such as a nut, a snap ring or a pin that can be fastened and fixed; the side of the friction plate 42 facing the friction sheet 43 is a mirror surface structure to reduce the wear of the friction sheet 43.
[0052] As Figures 1 to 5As shown, the limit latch assembly further includes two latch plates 14, which are respectively located on both sides of the base plate 12 and fixedly connected to the base plate 12; the first damping assembly 30 includes a piston rod 31 and a sleeve 32. The piston rod 31 is fixedly connected to the box-shaped enclosure 22 and is provided with a piston in the middle; the sleeve 32 is slidably sleeved on the middle of the piston rod 31 and is located between the two latch plates 14. Compressed gas or fluid is provided inside the sleeve 32.
[0053] In this way, the two latch plates 14 can limit both sides of the sleeve 32. When the first connecting seat 10 drives the latch plates 14 to move, the sleeve 32 is driven to slide on the piston rod 31, so that the compressed gas or fluid inside the sleeve 32 moves on both sides of the piston, forming a viscous resistance to buffer and dissipate energy.
[0054] Furthermore, both of the two latch plates 14 are perpendicular to the base plate 12 and are fixedly connected to the first connecting plate 11 to strengthen the base plate 12; both ends of the piston rod 31 are connected to the box-shaped enclosure 22 by means of fastening with bolt adjusting nuts, clamping, pin connection or welding.
[0055] In some specific embodiments, there are multiple second damping assemblies 40. The second connecting seat 20 is provided with multiple starting-sliding limit grooves 23 corresponding to the second damping assemblies 40 one by one. The sliding strokes between different second damping assemblies 40 and the corresponding starting-sliding limit grooves 23 are different to achieve more levels of limiting.
[0056] In some specific embodiments, both the first connecting seat 10 and the second connecting seat 20 are steel components, and embedded parts are also provided on the first connecting plate 11 and the second connecting plate 21 to better connect with concrete structures such as walls.
[0057] In some specific embodiments, the first connecting plate 11 is provided with limit ribs, and the box-shaped enclosure 22 is provided with sliding grooves corresponding to the limit ribs. Through the cooperation of the limit ribs and the sliding grooves, the sliding direction between the first connecting seat 10 and the second connecting seat 20 can be limited to avoid sliding in other directions, resulting in damage to the components therein and affecting the use.
[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A multi-stage adjustable composite damping device, characterized in that, Comprising: A first connecting seat (10); A second connecting seat (20), having a degree of freedom of sliding in a first direction with respect to the first connecting seat (10), and provided with a starting-sliding limiting groove (23); A first damping assembly (30), having two connecting ends, capable of relative movement in the first direction between the two connecting ends and generating damping, and the two connecting ends are respectively fixedly connected to the first connecting seat (10) and the second connecting seat (20); A second damping assembly (40), having two connecting ends, capable of relative movement in the first direction between the two connecting ends and generating damping, and one of the connecting ends is fixedly connected to the first connecting seat (10), and the other connecting end is in sliding fit with the starting-sliding limiting groove (23) of the second connecting seat (20) in the first direction, and the sliding stroke is greater than or equal to zero.
2. The multi-stage adjustable composite damping device according to claim 1, wherein: The second damping assembly (40) is a friction damping assembly, and the first damping assembly (30) is a viscous damping assembly; a plurality of the first damping assemblies (30) are arranged in parallel.
3. The multi-stage adjustable composite damping device according to claim 1 or 2, characterized in that: The first connecting seat (10) includes a first connecting plate (11) and a limiting tenon assembly, and the limiting tenon assembly is fixedly connected to the first connecting plate (11); the second connecting seat (20) includes a second connecting plate (21) and a box-shaped surrounding plate (22), the box-shaped surrounding plate (22) is fixedly connected to the second connecting plate (21), the first damping assembly (30), the second damping assembly (40) and the limiting tenon assembly are all located inside the box-shaped surrounding plate (22); and the two connecting ends of the first damping assembly (30) are respectively connected to the limiting tenon assembly and the box-shaped surrounding plate (22), the two connecting ends of the second damping assembly (40) are also respectively connected to the limiting tenon assembly and the box-shaped surrounding plate (22), and the starting-sliding limiting groove (23) is provided on the box-shaped surrounding plate (22).
4. The multi-stage adjustable composite damping device according to claim 3, wherein, The limiting tenon assembly includes a base plate (12), the base plate (12) is fixedly connected to the first connecting plate (11), and the base plate (12) has a sliding groove (13) arranged in the first direction; the second damping assembly (40) includes: A sliding shaft (41), passing through the sliding groove (13) and being in sliding fit with the sliding groove (13); A friction plate (42), provided on the base plate (12) and located on the outer periphery of the sliding groove (13); A friction sheet (43), sleeved on the sliding shaft (41) and cooperating with the friction plate (42) to form a sliding friction pair; An elastic member (44), provided on a side of the friction sheet (43) facing away from the friction plate (42) to apply pressure to the friction sheet (43); A starting slider (45), sleeved on the sliding shaft (41) and located on a side of the elastic member (44) facing away from the friction sheet (43), and an outer end of the starting slider (45) is arranged in the starting-sliding limiting groove (23); Two fasteners (46), respectively located at two ends of the sliding shaft (41) to press the base plate (12), the friction plate (42), the friction sheet (43), the elastic member (44) and the starting slider (45) tightly; Wherein, the friction plate (42) is one connection end of the second damping assembly (40), and the starting slider (45) is the other connection end of the second damping assembly (40).
5. The multi-stage adjustable composite damping device according to claim 4, wherein: There are two of each of the friction plate (42), the friction sheet (43), the elastic member (44), and the starting slider (45), and they are respectively located on both sides of the substrate (12); the elastic member (44) is a spring or an elastic rubber ring sleeved on the sliding shaft (41); the fastener (46) is a nut, a snap ring, or a pin; the side of the friction plate (42) facing the friction sheet (43) is a mirror structure.
6. The multi-stage adjustable composite damping device according to claim 4, wherein, The limit tenon assembly further includes two clamping plates (14), which are respectively located on both sides of the substrate (12) and are fixedly connected to the substrate (12); the first damping assembly (30) includes:[[]] A piston rod (31), which is fixedly connected to the box-shaped enclosure (22) and is provided with a piston in the middle. A sleeve (32), which is slidably sleeved on the middle of the piston rod (31) and is located between the two clamping plates (14), and the inside of the sleeve (32) is provided with compressed gas or fluid.
7. The multi-stage adjustable composite damping device according to claim 6, wherein: Both of the two clamping plates (14) are perpendicular to the substrate (12) and are fixedly connected to the first connecting plate (11); both ends of the piston rod (31) are connected to the box-shaped enclosure (22) by means of bolt adjusting nuts for fastening, clamping, pinning, or welding.
8. The multi-stage adjustable composite damping device according to claim 3, wherein: There are multiple second damping assemblies (40), and the second connecting seat (20) is provided with multiple starting-sliding limit grooves (23) corresponding to the second damping assemblies (40) one by one, and the sliding strokes between different second damping assemblies (40) and the corresponding starting-sliding limit grooves (23) are different.
9. The multi-stage adjustable composite damping device according to claim 3, wherein: 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.
10. The multi-stage adjustable composite damping device according to claim 3, wherein: The first connecting plate (11) is provided with a limit rib, and the box-shaped enclosure (22) is provided with a chute corresponding to the limit rib.