Friction spring damper
By designing friction spring dampers, using the combination of friction spring and tension rod, the problem of poor performance of existing dampers at low speeds or high temperatures is solved, and stable damping effect and automatic reset are achieved, reducing cost.
Patent Information
- Application Number
- CN202422732164.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing construction dampers cannot stably exert damping effects at low speeds or high temperatures, and there are problems of viscous liquid leakage and dependence on metal materials.
A friction spring damper is designed to achieve energy consumption by means of parallel and dislocated tension rods and fixing plates, and to achieve bidirectional energy consumption and automatic reset through locking sleeves and movable plates.
It achieves a stable damping effect at different loading speeds and temperatures, avoids viscous liquid leakage and metal material dependence, and the structure of each component is simple and the overall cost is low.
Smart Images
Figure CN223034247U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building earthquake resistance, and particularly relates to a friction spring damper. Background Technique
[0002] The damper for building earthquake resistance is an important structural device used to reduce the vibration of buildings under the action of earthquakes or winds. Currently, the common dampers for buildings mainly include viscous dampers of the velocity type, mild steel dampers of the metal yield type, buckling-restrained braces, etc. The performance of the viscous damper is related to the loading speed, and it cannot exert a stable damping effect at low or high speeds. At the same time, it is greatly affected by temperature and cannot exert a damping effect at low or high temperatures. Moreover, due to manufacturing process problems, there is also a risk of leakage of viscous liquid. For metal dampers, since they rely on metal yield to consume energy, their energy consumption efficiency and ultimate output are greatly related to the metal material and size. Generally speaking, the size is relatively large, and they cannot be used continuously after yielding and consuming energy, and usually need to be overhauled or replaced. Content of the Utility Model
[0003] In view of this, the purpose of the utility model is to provide a friction spring damper to solve the deficiencies existing in the existing dampers used in building earthquake resistance mentioned in the background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solutions:
[0005] A friction spring damper of the utility model includes a first tension-compression rod and a second tension-compression rod which are arranged in parallel and offset. At the upper parts of the middle ends of the first tension-compression rod and the second tension-compression rod, a first fixing plate and a second fixing plate are respectively provided. The first fixing plate and the second fixing plate are respectively fixedly connected to the ends of the first tension-compression rod and the second tension-compression rod, and the first fixing plate and the second fixing plate are respectively slidably connected to the second tension-compression rod and the first tension-compression rod. On the inner side surfaces of the first fixing plate and the second fixing plate, a first movable plate and a second movable plate are respectively provided. The first movable plate and the second movable plate are respectively slidably connected to the first tension-compression rod and the second tension-compression rod. Sliding holes are provided at the sliding connection parts of the second fixing plate and the first fixing plate with the first tension-compression rod and the second tension-compression rod. The diameter of the sliding holes is larger than the diameters of the first tension-compression rod and the second tension-compression rod. At the outer ends of the first tension-compression rod and the second tension-compression rod, a first locking sleeve and a second locking sleeve are respectively provided. The diameters of the first locking sleeve and the second locking sleeve are smaller than the diameter of the sliding holes. A friction spring is provided between the first fixing plate and the second fixing plate.
[0006] Further, the friction spring includes a plurality of outer rings and inner rings arranged at intervals. V-shaped wedge surfaces are provided on the inner circles of the outer rings and the outer circles of the inner rings. The outer rings are slidably sleeved on the inner rings, and the wedge surfaces on the outer rings are in sliding contact with the wedge surfaces on the inner rings.
[0007] Further, the ends of the first tension-compression rod and the second tension-compression rod are respectively threadedly connected to the ends of the first locking sleeve and the second locking sleeve.
[0008] Further, threaded holes are provided inside the connection ends of the first locking sleeve and the second locking sleeve with the first tension-compression rod and the second tension-compression rod, and external threads are provided on the ends of the first tension-compression rod and the second tension-compression rod.
[0009] Further, connection ears are provided on the outer ends of the first locking sleeve and the second locking sleeve.
[0010] Further, the vertical projections of the first fixing plate, the second fixing plate, the first movable plate, and the second movable plate coincide.
[0011] Further, the outer edges of the friction spring are flush with the outer edges of the first fixing plate, the second fixing plate, the first movable plate, and the second movable plate.
[0012] Further, a telescopic dust-proof sleeve is provided on the outer surface of the friction spring.
[0013] The beneficial effects of the present utility model are as follows:
[0014] (1) The damper in this technical solution can stably provide friction energy dissipation and can automatically reset after energy dissipation;
[0015] (2) The damper in this technical solution can achieve two-way tension-compression energy dissipation, and the structures of the various components in this damper are simple, and the overall cost is low.
[0016] Other advantages, objectives, and features of the present utility model will be described in the subsequent specification, and to a certain extent, they are obvious to those skilled in the art, or those skilled in the art can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following specification. Brief Description of the Drawings
[0017] In order to make the objectives, technical solutions, and beneficial effects of the present utility model clearer, the following drawings are provided by the present utility model for illustration:
[0018] Figure 1 It is a three-dimensional schematic diagram of the friction spring damper of the present utility model;
[0019] Figure 2Internal sectional view schematic diagram of the friction spring damper of the present utility model;
[0020] Figure 3 Internal three-dimensional schematic diagram of the friction spring damper of the present utility model;
[0021] Figure 4 Three-dimensional schematic diagram of the friction spring in the friction spring damper of the present utility model.
[0022] The marks in the attached drawings are as follows:
[0023] 1. Second fixing plate; 2. First tension-compression rod; 3. First locking sleeve; 4. First fixing plate; 5. Second tension-compression rod; 6. Second locking sleeve; 7. Second movable plate; 8. First movable plate; 9. Connecting ear; 10. Outer ring; 11. Inner ring; 12. Sliding hole. Specific implementation mode
[0024] As Figures 1 to 4 shown, a friction spring damper of the present utility model includes a first tension-compression rod 2 and a second tension-compression rod 5 which are arranged in parallel and offset. At the upper parts of the middle ends of the first tension-compression rod 2 and the second tension-compression rod, a first fixing plate 4 and a second fixing plate 1 are respectively provided. The first fixing plate 4 and the second fixing plate 1 are respectively fixedly connected to the ends of the first tension-compression rod 2 and the second tension-compression rod 5, and the first fixing plate 4 and the second fixing plate 1 are respectively slidably connected to the second tension-compression rod 5 and the first tension-compression rod 2 (sliding connection is realized by opening holes at the connection parts). On the inner side surfaces of the first fixing plate 4 and the second fixing plate 1, a first movable plate 8 and a second movable plate 7 are respectively provided. The first movable plate 8 and the second movable plate 7 are respectively slidably connected to the first tension-compression rod 2 and the second tension-compression rod 5. Sliding holes 12 are provided at the sliding connection parts of the second fixing plate 1 and the first fixing plate 4 with the first tension-compression rod 2 and the second tension-compression rod 5. The diameter of the sliding hole 12 is larger than the diameters of the first tension-compression rod 2 and the second tension-compression rod 5. First locking sleeves 3 and second locking sleeves 6 are respectively provided at the outer ends of the first tension-compression rod 2 and the second tension-compression rod 5. The diameters of the first locking sleeve 3 and the second locking sleeve 6 are smaller than the diameter of the sliding hole 12. A friction spring is provided between the first fixing plate 4 and the second fixing plate 1.
[0025] The working principle of the above technical solution is as follows:
[0026] When the first tension-compression rod 2 and the second tension-compression rod 5 are in tension, the first tension-compression rod 2 and the second tension-compression rod 5 drive the first fixing plate 4 and the second fixing plate 1 to squeeze the friction spring, thereby enabling the friction spring to dissipate energy. When the first tension-compression rod 2 and the second tension-compression rod 5 are in compression, the first fixing plate 4 and the second fixing plate 1 slide on the second locking sleeve 6 and the first locking sleeve 3 under the action of the sliding hole 12. At the same time, the first locking sleeve 3 and the second locking sleeve 6 respectively abut against the second movable plate 7 and the first movable plate 8, pushing the second movable plate 7 and the first movable plate 8 to squeeze the friction spring inward, so that the friction spring dissipates energy. Therefore, this technical solution can achieve two-way energy dissipation when being pulled and compressed on both sides.
[0027] In an implementable manner, the friction spring includes a plurality of outer rings 10 and inner rings 11 (both are metal rings) arranged at intervals. V-shaped wedge surfaces are provided on the inner circle of the outer ring 10 and the outer circle of the inner ring 11. The outer ring 10 is slidably sleeved on the inner ring 11, and the wedge surface on the outer ring 10 is in sliding contact with the wedge surface on the inner ring 11. It is not difficult to understand that when the outer ring 10 is squeezed, the wedge surface provided thereon and the wedge surface on the inner ring 11 may slide, and friction will be generated during the sliding process to achieve energy dissipation. When the external force is removed, the self-resetting function will be realized under the tension force of the outer ring 10 and the inner ring 11 itself. The setting method and energy dissipation principle of this friction spring are prior arts and will not be elaborated here too much.
[0028] In an implementable manner, the ends of the first tension-compression rod 2 and the second tension-compression rod 5 are respectively threadedly connected to the ends of the first locking sleeve 3 and the second locking sleeve 6. The advantage of threaded connection is that it is convenient for pre-assembly, and the locking degree (the number of turns of spiral rotation) between the first locking sleeve 3 and the first tension-compression rod 2 and between the first locking sleeve 3 and the second tension-compression rod 5 can be adjusted, thereby applying an initial pressure to the friction spring, and then the initial damping size of the friction spring can be changed. Different energy dissipation performances can also be achieved by changing the stacking quantity and stacking method of the friction spring, that is, the use range of the damper can be simply adjusted, reflecting the wide applicability of the damper, and then increasing the use scenario range of this damper.
[0029] In an implementable manner, threaded holes are provided inside the connection ends of the first locking sleeve 3 and the second locking sleeve 6 with the first tension-compression rod 2 and the second tension-compression rod 5, and external threads are provided on the ends of the first tension-compression rod 2 and the second tension-compression rod 5. Connection ears 9 are provided on the outer ends of the first locking sleeve 3 and the second locking sleeve 6, and the connection ears 9 are convenient for connecting with the components that need energy dissipation.
[0030] In an implementable manner, the vertical projections of the first fixing plate 4, the second fixing plate 1, the first movable plate 8, and the second movable plate 7 coincide, and the outer edge of the friction spring is flush with the outer edges of the first fixing plate 4, the second fixing plate 1, the first movable plate 8, and the second movable plate 7. This setting makes the appearance of this damper look more regular.
[0031] In an implementable manner, a telescopic dust cover is provided on the outer surface of the friction spring, which can prevent foreign objects from entering and interfering with the sliding of the friction spring.
[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.
Claims
1. A friction spring damper, characterized in that: The invention comprises a first tension and compression rod (2) and a second tension and compression rod (5) which are arranged in parallel and staggered. The first tension and compression rod (2) and the second tension and compression rod (5) are respectively provided with a first fixing plate (4) and a second fixing plate (1) at the upper part of one end located in the middle. The first fixing plate (4) and the second fixing plate (1) are respectively fixedly connected to the ends of the first tension and compression rod (2) and the second tension and compression rod (5). The first fixing plate (4) and the second fixing plate (1) are respectively slidably connected to the second tension and compression rod (5) and the first tension and compression rod (2). The inner side surfaces of the first fixing plate (4) and the second fixing plate (1) are respectively provided with a first movable plate (8) and a second movable plate (7). The first movable plate (8) and the second movable plate (7) They are respectively slidably connected to the first tension and compression rod (2) and the second tension and compression rod (5); a sliding hole (12) is provided at the sliding connection portion between the second fixing plate (1) and the first fixing plate (4) and the first tension and compression rod (2) and the second tension and compression rod (5); the diameter of the sliding hole (12) is larger than the diameter of the first tension and compression rod (2) and the second tension and compression rod (5); a first locking sleeve (3) and a second locking sleeve (6) are respectively provided at one end of the first tension and compression rod (2) and the second tension and compression rod (5) located on the outside; the diameter of the first locking sleeve (3) and the second locking sleeve (6) are smaller than the diameter of the sliding hole (12); a friction spring is provided between the first fixing plate (4) and the second fixing plate (1).
2. A friction spring damper according to claim 1, characterized in that: The friction spring comprises a plurality of outer rings (10) and inner rings (11) which are arranged at intervals. The inner ring of the outer ring (10) and the outer ring of the inner ring (11) are both provided with V-shaped wedge surfaces. The outer ring (10) is slidably sleeved on the inner ring (11), and the wedge surfaces on the outer ring (10) and the wedge surfaces on the inner ring (11) are in sliding contact.
3. A friction spring damper according to claim 1, characterized in that: The ends of the first tension and compression rod (2) and the second tension and compression rod (5) are respectively threadedly connected to the ends of the first locking sleeve (3) and the second locking sleeve (6).
4. A friction spring damper according to claim 3, characterized in that: The connection ends of the first locking sleeve (3) and the second locking sleeve (6) and the first tension and compression rod (2) and the second tension and compression rod (5) are provided with threaded holes inside, and the ends of the first tension and compression rod (2) and the second tension and compression rod (5) are provided with external threads.
5. A friction spring damper according to claim 1, characterized in that: The first locking sleeve (3) and the second locking sleeve (6) are both provided with connecting ears (9) on their outward ends.
6. A friction spring damper according to claim 1, characterized in that: The vertical projections of the first fixed plate (4), the second fixed plate (1), the first movable plate (8) and the second movable plate (7) overlap.
7. A friction spring damper according to claim 1, characterized in that: The outer edge of the friction spring is arranged flush with the outer edges of the first fixed plate (4), the second fixed plate (1), the first movable plate (8) and the second movable plate (7).
8. A friction spring damper according to claim 1, characterized in that: A telescopic dust cover is arranged on the outer surface of the friction spring.