Friction type damper
By designing a friction damper with long sliding stroke and bidirectional sliding capability, the problems of inefficiency and structural deformation of traditional friction dampers after displacement are solved, and the effect of efficient vibration elimination and prolonging service life is achieved.
Patent Information
- Application Number
- CN202422234552.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-12
AI Technical Summary
After the displacement of the traditional friction damper, the friction movement with a smaller stroke leads to the low effect of converting mechanical energy into thermal energy, resulting in structural deformation and failure.
A friction damper including a sliding cylinder, a lower shaft sleeve, an upper shaft sleeve, a friction tile, an elastic fastening mechanism, a heat dissipation mechanism and a vertical damping mechanism are designed. The sliding stroke of the sliding cylinder is long, the efficiency of converting mechanical energy into thermal energy is high, and the sliding cylinder can slide in both directions.
The long-stroke sliding of the sliding cylinder is realized, the efficiency of converting mechanical energy into thermal energy is improved, vibration is effectively eliminated, service life is extended, and the structural stability is optimized through heat dissipation and damping mechanisms.
Smart Images
Figure CN223017899U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of friction dampers, in particular to a friction damper. Background Technique
[0002] Common seismic resistance methods consume the energy brought by earthquakes to buildings through the plastic deformation of the building structure itself. In essence, the structure itself and its components are used as energy-consuming elements, which will inevitably cause varying degrees of damage to the structure itself, and even cause serious damage and collapse of the building. In order to reduce the serious consequences caused by such events, energy-consuming components have been designed and developed, and the friction damper is one of them. The traditional friction damper mainly consists of an intermediate steel plate, two outer steel plates and the friction material between the steel plates. The friction damper generates frictional force through the relative sliding between the intermediate steel plate and the friction material, and converts the vibration energy of the building into heat energy.
[0003] By converting the vibration energy of the building into heat energy to eliminate the vibration of the building, the traditional friction damper has a small displacement correlation and has some unsolvable disadvantages, such as a small stroke; it is easy to cause uneven stress; it can only generate unidirectional frictional motion, etc. The small-stroke frictional motion causes the traditional friction damper to have a small frictional motion after displacement, resulting in low efficiency of converting mechanical energy into heat energy, causing the mechanical energy to deform the structure of the damper and making the damper ineffective, which cannot meet the actual needs. Content of the Utility Model
[0004] The utility model discloses a friction damper, aiming to solve the technical problem that the small-stroke frictional motion causes the traditional friction damper to have a small frictional motion after displacement, resulting in low efficiency of converting mechanical energy into heat energy, causing the mechanical energy to deform the structure of the damper and making the damper ineffective.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme:
[0006] A friction damper includes an upper flange. Fixedly connected to the lower surfaces of both ends of the upper flange are fixing plates respectively. Fixedly connected to one side of each fixing plate are reinforcing plates respectively. Fixedly connected to the bottom position of one side of each fixing plate and located below the reinforcing plate is a sliding cylinder. Slidingly connected to the lower surface of the sliding cylinder is a lower shaft sleeve. Upper shaft sleeves are arranged on the upper surfaces of both sides of the lower shaft sleeve. A plurality of friction tiles are respectively arranged on the inner walls of the lower shaft sleeve and the upper shaft sleeve;
[0007] An elastic fastening mechanism is installed between the lower shaft sleeve and the upper shaft sleeve, and the elastic fastening mechanism is used to connect the lower shaft sleeve and the upper shaft sleeve;
[0008] A heat dissipation mechanism is installed inside the sliding cylinder, and the heat dissipation mechanism is used to dissipate heat from the sliding cylinder;
[0009] A vertical damping mechanism is installed at the bottom of the lower bushing, and the vertical damping mechanism is used to buffer vibrations in the vertical direction.
[0010] In a preferred embodiment, the elastic fastening mechanism includes connecting bolts inserted through the two side edges of the lower bushing. One end of each connecting bolt is threadedly connected to a fixing nut. A retaining plate is provided at the bottom of the fixing nut. A spring is sleeved at the bottom of one end of each connecting bolt and located below the retaining plate.
[0011] In a preferred embodiment, the heat dissipation mechanism includes a plurality of heat dissipation plates fixedly connected to the inner wall of the sliding cylinder. A plurality of support plates are fixedly connected to the inner wall of the sliding cylinder. A plurality of heat dissipation slots are provided on the upper surface of the sliding cylinder.
[0012] In a preferred embodiment, the vertical damping mechanism includes a vertical extrusion block fixedly connected to the bottom of the lower bushing. A vertical damping block is provided at the bottom of the vertical extrusion block. A sliding plate is provided at the bottom of the vertical damping block.
[0013] An auxiliary damping mechanism is installed at the bottom of the sliding plate, and the auxiliary damping mechanism is used to eliminate vibrations in a direction perpendicular to the sliding direction of the sliding cylinder.
[0014] In a preferred embodiment, the auxiliary damping mechanism includes a plurality of auxiliary damping cylinders fixedly connected to both sides of the sliding plate. An auxiliary plate is fixedly connected to the bottom of the sliding plate. The bottom of the auxiliary plate is slidably connected to a lower flange. A plurality of slide rails are fixedly connected to the upper surface of the lower flange at a position corresponding to the bottom of the auxiliary plate. A plurality of sliding grooves are designed at the bottom of the auxiliary plate. Stopping plates are respectively fixedly connected to both sides of the upper surface of the lower flange at a position corresponding to one side of the auxiliary damping cylinder.
[0015] As can be seen from the above, a friction damper provided by the present invention has the advantages of a relatively long sliding stroke of the sliding cylinder, high efficiency in converting mechanical energy into heat energy, and can effectively eliminate vibrations. Moreover, the sliding cylinder can slide back and forth, and the sliding stroke is bidirectional. Compared with a damper with unidirectional sliding, it has the advantage of a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 FIG. is a front view structural schematic diagram of a friction damper proposed by the present invention.
[0017] Figure 2 FIG. is a sectional view structural schematic diagram of a friction damper proposed by the present invention.
[0018] Figure 3 FIG. is an internal structure schematic diagram of a friction damper proposed by the present invention.
[0019] Figure 4 This is a schematic diagram of a partial structure of a friction damper proposed by the present utility model.
[0020] In the attached drawings: 1. Lower flange; 2. Stop plate; 3. Lower bushing; 4. Sliding cylinder; 5. Fixed plate; 6. Upper flange; 7. Reinforcing plate; 8. Upper bushing; 9. Auxiliary plate; 10. Sliding plate; 11. Vertical damping block; 12. Slide rail; 13. Vertical extrusion block; 14. Auxiliary damping cylinder; 15. Support plate; 16. Heat dissipation slot; 17. Heat dissipation plate; 18. Friction tile; 19. Fixed nut; 20. Retaining piece; 21. Spring; 22. Connecting bolt. Detailed implementation manners
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation to the present utility model.
[0023] A friction damper disclosed by the present utility model is mainly applied to the scenario where in a friction movement with a small stroke, after the traditional friction damper undergoes displacement, the small friction movement results in a low efficiency of converting mechanical energy into heat energy, causing the mechanical energy to deform the structure of the damper and rendering the damper ineffective.
[0024] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a friction damper includes an upper flange 6. Fixed plates 5 are respectively fixedly connected to the lower surfaces of both ends of the upper flange 6. Reinforcing plates 7 are respectively fixedly connected to one sides of the fixed plates 5. A sliding cylinder 4 is fixedly connected to the bottom position of one side of the fixed plate 5 and located at the bottom of the reinforcing plate 7. A lower bushing 3 is slidably connected to the lower surface of the sliding cylinder 4. Upper bushings 8 are arranged on the upper surfaces of both sides of the lower bushing 3. A plurality of friction tiles 18 are respectively arranged on the inner walls of the lower bushing 3 and the upper bushing 8;
[0025] An elastic fastening mechanism is installed between the lower bushing 3 and the upper bushing 8, and the elastic fastening mechanism is used to connect the lower bushing 3 and the upper bushing 8;
[0026] A heat dissipation mechanism is installed inside the sliding cylinder 4, and the heat dissipation mechanism is used to dissipate heat from the sliding cylinder 4;
[0027] A vertical damping mechanism is installed at the bottom of the lower shaft sleeve 3, and the vertical damping mechanism is used to buffer vibrations in the vertical direction.
[0028] In this embodiment, the top of the upper flange 6 is fixedly connected to the building, and the lower flange 1 is fixedly connected to the foundation. When the building undergoes lateral vibrations, the vibration direction is the same as the sliding direction of the sliding cylinder 4. The lateral vibrations of the building cause relative sliding between the sliding cylinder 4 and the lower shaft sleeve 3 and the upper shaft sleeve 8. Friction occurs between the sliding cylinder 4 and the friction tile 18, converting the mechanical energy of the building vibration into heat energy, achieving the effect of eliminating the lateral vibrations of the building. During the relative sliding process between the sliding cylinder 4 and the lower shaft sleeve 3 and the upper shaft sleeve 8, the sliding stroke of the sliding cylinder 4 is relatively long, and the efficiency of converting mechanical energy into heat energy is high, which can effectively eliminate vibrations. Moreover, the sliding cylinder 4 can slide back and forth, and the sliding stroke is bidirectional. Compared with a damper with unidirectional sliding, it has the advantage of a long service life.
[0029] Furthermore, the sliding cylinder 4 can also rotate to a certain extent between the lower shaft sleeve 3 and the upper shaft sleeve 8. Especially when the building is damaged and the top pressure changes, causing the upper flange 6 to shift, the relative rotation between the sliding cylinder 4 and the lower shaft sleeve 3 and the upper shaft sleeve 8 can effectively eliminate the influence of the top pressure change on the damper.
[0030] Refer to Figure 1 、 Figure 2 and Figure 4 , in a preferred embodiment, the elastic fastening mechanism includes connection bolts 22 inserted through and connected to the two side edges of the lower shaft sleeve 3. One end of the connection bolt 22 is threadedly connected to a fixing nut 19. A retaining piece 20 is provided at the bottom of the fixing nut 19, and a spring 21 is sleeved at one end of the connection bolt 22 located at the bottom of the retaining piece 20.
[0031] In this embodiment, during the friction between the sliding cylinder 4 and the friction tile 18, vertical vibrations will occur. When the sliding cylinder 4 vibrates upward, it drives the upper shaft sleeve 8 to vibrate upward. The retaining piece 20 and the spring 21 keep the friction tile 18 inside the upper shaft sleeve 8 in contact with the surface of the sliding cylinder 4 at all times. When the sliding cylinder 4 vibrates downward, the sliding cylinder 4 drives the lower shaft sleeve 3 to vibrate downward. The retaining piece 20 and the spring 21 can also keep the friction tile 18 inside the upper shaft sleeve 8 in contact with the surface of the sliding cylinder 4 at all times, so that there is always friction between the sliding cylinder 4 and the friction tile 18 during the vertical vibration process, achieving the effect of keeping the upper shaft sleeve 8 and the sliding cylinder 4 connected at all times.
[0032] Refer to Figure 1 、 Figure 2 and Figure 4, in a preferred embodiment, the heat dissipation mechanism includes a plurality of heat dissipation plates 17 fixedly connected to the inner wall of the sliding cylinder 4. A plurality of support plates 15 are fixedly connected to the inner wall of the sliding cylinder 4, and a plurality of heat dissipation slots 16 are provided on the upper surface of the sliding cylinder 4.
[0033] In this embodiment, after the sliding cylinder 4 slides multiple times, a large amount of heat is generated. The heat energy of the sliding cylinder 4 is dispersed into the air through the plurality of heat dissipation plates 17 inside the sliding cylinder 4. The arrangement of the heat dissipation plates 17 has a large contact area with the air, which is conducive to heat dissipation. The function of the heat dissipation slots 16 can achieve air exchange and optimize the heat dissipation effect.
[0034] Refer to Figure 1 , Figure 3 and Figure 4 , in a preferred embodiment, the vertical damping mechanism includes a vertical extrusion block 13 fixedly connected to the bottom of the lower shaft sleeve 3. A vertical damping block 11 is provided at the bottom of the vertical extrusion block 13, and a sliding plate 10 is provided at the bottom of the vertical damping block 11;
[0035] An auxiliary damping mechanism is installed at the bottom of the sliding plate 10, and the auxiliary damping mechanism is used to eliminate vibrations in a direction perpendicular to the sliding direction of the sliding cylinder 4.
[0036] In this embodiment, when vertical vibrations occur, the vibrations are transmitted downward through the upper flange 6 and the sliding cylinder 4, causing the vertical extrusion block 13 to vibrate. The vertical damping block 11 eliminates vertical vibrations by deforming.
[0037] Refer to Figure 1 , Figure 3 and Figure 4 , in a preferred embodiment, the auxiliary damping mechanism includes a plurality of auxiliary damping cylinders 14 fixedly connected to both sides of the sliding plate 10. An auxiliary plate 9 is fixedly connected to the bottom of the sliding plate 10. The bottom of the auxiliary plate 9 is slidably connected to a lower flange 1. A plurality of slide rails 12 are fixedly connected to the upper surface of the lower flange 1 at the position corresponding to the bottom of the auxiliary plate 9. A plurality of sliding grooves are designed at the bottom of the auxiliary plate 9. Stopping plates 2 are respectively fixedly connected to both sides of the upper surface of the lower flange 1 at the position corresponding to one side of the auxiliary damping cylinder 14.
[0038] The bottom of the reinforcing plate 7 is fixedly connected to the sliding cylinder 4, and the top of the reinforcing plate 7 is fixedly connected to the upper flange 6. The heat dissipation plates 17 are evenly arranged inside the sliding cylinder 4, and the heat dissipation plates 17 are fixedly connected to the support plates 15.
[0039] The vertical damping block 11 is made of a high-strength composite material and has a certain elasticity. The other end of the auxiliary damping cylinder 14 is fixedly connected to the stopping plate 2. The sliding cylinder 4 is also made of a high-strength composite material with elasticity. The slide rails 12 are located inside the sliding grooves.
[0040] In this embodiment, when a lateral vibration perpendicular to the sliding direction of the sliding cylinder 4 occurs, the vertical extrusion block 13 drives the sliding plate 10 to vibrate back and forth on both sides, and eliminates the lateral vibration perpendicular to the sliding direction of the sliding cylinder 4 by extruding a plurality of auxiliary damping cylinders 14 on both sides, achieving the effect of protecting the device and preventing the device from being damaged.
[0041] Working principle: During use, the top of the upper flange 6 is fixedly connected to the building, and the lower flange 1 is fixedly connected to the foundation. When the building undergoes lateral vibration and the vibration direction is the same as the sliding direction of the sliding cylinder 4, the relative sliding occurs between the sliding cylinder 4 and the lower shaft sleeve 3 and the upper shaft sleeve 8. Friction occurs between the sliding cylinder 4 and the friction tile 18, converting the mechanical energy of the building vibration into heat energy, achieving the effect of eliminating the lateral vibration of the building. During the relative sliding between the sliding cylinder 4 and the lower shaft sleeve 3 and the upper shaft sleeve 8, the sliding stroke of the sliding cylinder 4 is relatively long, and the efficiency of converting mechanical energy into heat energy is high, which can effectively eliminate vibration. Moreover, the sliding cylinder 4 can slide back and forth, and the sliding stroke is bidirectional. Compared with a damper with unidirectional sliding, it has the advantage of a long service life. During the friction between the sliding cylinder 4 and the friction tile 18, vertical vibration will occur. When the sliding cylinder 4 vibrates upward, it drives the upper shaft sleeve 8 to vibrate upward. The retaining piece 20 and the spring 21 keep the friction tile 18 inside the upper shaft sleeve 8 in contact with the surface of the sliding cylinder 4 at all times. When the sliding cylinder 4 vibrates downward, the sliding cylinder 4 drives the lower shaft sleeve 3 to vibrate downward. The retaining piece 20 and the spring 21 can also keep the friction tile 18 inside the upper shaft sleeve 8 in contact with the surface of the sliding cylinder 4 at all times, so that there is always friction between the sliding cylinder 4 and the friction tile 18 during the vertical vibration process, achieving the effect of keeping the upper shaft sleeve 8 and the sliding cylinder 4 connected at all times.
[0042] When vertical vibration occurs, the vibration is transmitted downward through the upper flange 6 and the sliding cylinder 4, causing the vertical extrusion block 13 to vibrate. The vertical damping block 11 eliminates the vertical vibration by deforming. When a lateral vibration perpendicular to the sliding direction of the sliding cylinder 4 occurs, the vertical extrusion block 13 drives the sliding plate 10 to vibrate back and forth on both sides, and eliminates the lateral vibration perpendicular to the sliding direction of the sliding cylinder 4 by extruding a plurality of auxiliary damping cylinders 14 on both sides, achieving the effect of protecting the device and preventing the device from being damaged. After the sliding cylinder 4 slides multiple times, a large amount of heat is generated. The heat energy of the sliding cylinder 4 is dispersed into the air through a plurality of heat dissipation plates 17 inside the sliding cylinder 4. The arrangement of the heat dissipation plates 17 has a large contact area with the air, which is conducive to heat dissipation. The function of the heat dissipation slot 16 can achieve air exchange and optimize the heat dissipation effect.
[0043] As mentioned above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. The substitution may be the substitution of partial structures, devices, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present utility model and its inventive concept shall be covered within the protection scope of the present utility model.
Claims
1. A friction damper, comprising an upper flange (6), characterized in that: The lower surfaces of both ends of the upper flange (6) are respectively fixedly connected with a fixing plate (5), one side of the fixing plate (5) is respectively fixedly connected with a reinforcing plate (7), one side of the fixing plate (5) is located at the bottom of the reinforcing plate (7) and is fixedly connected with a sliding cylinder (4), the lower surface of the sliding cylinder (4) is slidably connected with a lower shaft sleeve (3), upper shaft sleeves (8) are arranged on the upper surfaces of both sides of the lower shaft sleeve (3), and a plurality of friction shoes (18) are respectively arranged on the inner walls of the lower shaft sleeve (3) and the upper shaft sleeve (8); An elastic fastening mechanism is installed between the lower shaft sleeve (3) and the upper shaft sleeve (8), and the elastic fastening mechanism is used to connect the lower shaft sleeve (3) and the upper shaft sleeve (8); A heat dissipation mechanism is installed inside the sliding cylinder (4), and the heat dissipation mechanism is used to dissipate heat from the sliding cylinder (4); A vertical damping mechanism is installed at the bottom of the lower shaft sleeve (3), and the vertical damping mechanism is used to buffer vibration in the vertical direction; The elastic fastening mechanism comprises a connecting bolt (22) inserted through the edges of both sides of the lower shaft sleeve (3), one end of the connecting bolt (22) is threadedly connected to a fixing nut (19), a baffle (20) is provided at the bottom of the fixing nut (19), and one end of the connecting bolt (22) is located at the bottom of the baffle (20) and is sleeved with a spring (21).
2. A friction damper according to claim 1, characterized in that: The heat dissipation mechanism comprises a plurality of heat dissipation plates (17) fixedly connected to the inner wall of the sliding cylinder (4), a plurality of support plates (15) are fixedly connected to the inner wall of the sliding cylinder (4), and a plurality of heat dissipation slits (16) are arranged on the upper surface of the sliding cylinder (4).
3. A friction damper according to claim 2, characterized in that: The vertical damping mechanism comprises a vertical extrusion block (13) fixedly connected to the bottom of the lower shaft sleeve (3), a vertical damping block (11) is arranged at the bottom of the vertical extrusion block (13), and a sliding plate (10) is arranged at the bottom of the vertical damping block (11); An auxiliary damping mechanism is installed at the bottom of the sliding plate (10), and the auxiliary damping mechanism is used to eliminate vibration in a direction perpendicular to the sliding direction of the sliding cylinder (4).
4. A friction damper according to claim 3, characterized in that: The auxiliary damping mechanism comprises a plurality of auxiliary damping cylinders (14) fixedly connected to both sides of a sliding plate (10); the bottom of the sliding plate (10) is fixedly connected to an auxiliary plate (9); the bottom of the auxiliary plate (9) is slidably connected to a lower flange (1); the upper surface of the lower flange (1) is fixedly connected to a position at the bottom of the auxiliary plate (9) and is provided with a plurality of slide rails (12); the bottom of the auxiliary plate (9) is provided with a plurality of slide grooves; and the upper surface of the lower flange (1) is fixedly connected to a position on one side of the auxiliary damping cylinder (14) on both sides and is provided with stop plates (2) respectively.
5. A friction damper according to claim 4, characterized in that: The bottom of the reinforcing plate (7) is fixedly connected to the sliding cylinder (4), the top of the reinforcing plate (7) is fixedly connected to the upper flange (6), the heat dissipation plates (17) are evenly arranged inside the sliding cylinder (4), and the heat dissipation plates (17) are fixedly connected to the support plate (15).
6. A friction damper according to claim 5, characterized in that: The vertical damping block (11) is made of a high-strength composite material with a certain elasticity. The other end of the auxiliary damping cylinder (14) is fixedly connected to the stop plate (2). The sliding cylinder (4) is also made of a high-strength composite material with elasticity. The sliding rail (12) is located in the sliding groove.