Frictional viscous protection damper

Abstract

The utility model discloses a kind of friction viscous protection dampers, the damper aims at solving the problem that current damper cannot be too large when building large speed, easily lead to damper failure, increase the security risk. The damper includes viscous damper body, the outer surface of the viscous damper body is fixedly connected with outer tube, the outer tube and viscous damper body between slidingly arranged with friction protection sleeve. The utility model under small load, viscous fluid in cylinder body is first energy dissipation by viscous drag rate generated by damping hole on damping piston, when load exceeds setting threshold, the friction assembly of outer tube and friction protection sleeve starts, further dissipates energy by the sliding friction of the contact surface of first friction plate and second friction plate, this stage-by-stage energy dissipation mode solves the fatigue problem of traditional friction damper under small earthquake, and makes up the energy dissipation deficiency of viscous damper under large earthquake, significantly improves the safety and durability of structure.

Description

Technical Field

[0001] This utility model belongs to the field of damper technology, specifically relating to a friction-viscosity protection damper. Background Technology

[0002] Earthquakes, as a highly destructive natural disaster, pose a serious threat to human life and property. In numerous earthquake disaster cases, damage and collapse of buildings are often the main causes of casualties and economic losses. To improve the seismic performance of buildings, dampers, as an important seismic-resistant device, are widely used in various building structures.

[0003] The application of self-resetting dampers in engineering varies depending on the specific conditions. A self-resetting damper is a type of damper that utilizes the reciprocating motion of a piston within a cylinder. The damping medium flows between two separate chambers, generating intense friction between the medium and the piston. As the medium passes through the piston orifice or gap, it generates damping force, dissipating seismic energy as heat through the reciprocating motion of the piston and the damping medium. This gradually reduces the piston's speed, achieving the purpose of damping and energy dissipation. However, existing dampers cannot withstand excessive force at high building speeds, as this can easily lead to damper failure and the failure of connecting components, causing significant damage to the entire building and increasing safety risks. In severe cases, this can result in loss of life and property. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a frictional viscosity protection damper. This damper aims to solve the problem that existing dampers cannot exert too much force at high construction speeds, which can easily lead to damper failure and increase safety risks.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a frictional viscous protective damper, which includes a viscous damper body, an outer cylinder fixedly connected to the outer surface of the viscous damper body, a friction protective sleeve slidably disposed between the outer cylinder and the viscous damper body, a first lug fixedly connected to the end of the friction protective sleeve away from the viscous damper body, and a first friction plate and a second friction plate fixedly connected to the inner wall of the outer cylinder on the side close to the viscous damper body, respectively, and both the first friction plate and the second friction plate are in contact with the friction protective sleeve.

[0008] Preferably, the viscous damper body includes a cylinder and an auxiliary barrel slidably connected to the cylinder, and a second lug is fixedly connected to the other end of the auxiliary barrel.

[0009] Furthermore, a damping piston is installed at one end of the auxiliary barrel located inside the cylinder body, and a damping hole is formed on the damping piston.

[0010] Furthermore, the outer cylinder includes two clamping semi-rings, which are fixedly connected to the outer surface of the cylinder body by a locking assembly. Each clamping semi-ring includes a sleeve and a convex ring fixedly connected to the inner wall of one end of the sleeve. The convex ring fits against the outer surface of the cylinder body.

[0011] Furthermore, the locking assembly includes two clamping plates, the two ends of which are fixedly connected by bolts, and the middle part of the clamping plates is adapted to the shape of the sleeve.

[0012] Furthermore, the friction protective sleeve has a ring structure with an opening at one end. A limiting ring is fixedly connected to the outer surface of the end of the friction protective sleeve with the opening. A limiting groove corresponding to the limiting ring is opened on the inner wall of the sleeve near the convex ring.

[0013] Furthermore, the friction protective sleeve has a through hole at the end away from the opening, and a threaded post is fixedly connected to one end of the first ear seat. The threaded post passes through the through hole and is fixedly connected to the friction protective sleeve through a lock nut.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] Under small loads (such as daily wind vibrations or minor earthquakes), the viscous fluid inside the cylinder first dissipates energy through the viscous resistance generated by the damping holes on the damping piston. When the load exceeds a set threshold (such as a strong earthquake or typhoon), the friction assembly consisting of the outer cylinder and the friction protective sleeve is activated, and energy is further dissipated through the sliding friction of the contact surfaces of the first and second friction plates. This staged energy dissipation mode not only solves the fatigue problem of traditional friction dampers under small earthquakes, but also makes up for the insufficient energy dissipation of viscous dampers under large earthquakes, significantly improving the safety and durability of the structure.

[0017] This invention is a novel earthquake and wind damper that integrates the dual mechanisms of frictional energy dissipation and viscous fluid damping. Through step-response design, it achieves efficient control of structural vibration and greatly reduces production and construction costs compared to existing structures. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the right-side structure of this utility model.

[0021] Figure 4 This is a cross-sectional structural diagram of the outer cylinder of this utility model.

[0022] Figure 5 This is a cross-sectional structural diagram of the friction protective sleeve of this utility model.

[0023] The markings in the attached diagram are as follows: 1. Viscous damper body; 2. Outer cylinder; 3. Friction protective sleeve; 4. First lug; 5. First friction plate; 6. Second friction plate; 101. Cylinder; 102. Auxiliary barrel; 103. Second lug; 201. Pressing half ring; 202. Locking assembly; 2011. Sleeve; 2012. Convex ring; 2021. Clamping plate; 2022. Bolt; 301. Opening; 302. Limiting ring; 303. Limiting groove; 304. Through hole; 401. Threaded post; 402. Locking nut. Detailed Implementation

[0024] This specific embodiment is a friction-viscosity protection damper, and its structural schematic diagram is shown below. Figure 1 As shown, the damper includes a viscous damper body 1, an outer cylinder 2 is fixedly connected to the outer surface of the viscous damper body 1, a friction protective sleeve 3 is slidably disposed between the outer cylinder 2 and the viscous damper body 1, a first lug 4 is fixedly connected to the end of the friction protective sleeve 3 away from the viscous damper body 1, and a first friction plate 5 and a second friction plate 6 are fixedly connected to the inner wall of the outer cylinder 2 on the side close to the viscous damper body 1, respectively, and both the first friction plate 5 and the second friction plate 6 are in contact with the friction protective sleeve 3.

[0025] like Figure 1 and Figure 2 As shown: In this embodiment, the viscous damper body 1 includes a cylinder 101 and an auxiliary barrel 102 slidably connected to the cylinder 101. The other end of the auxiliary barrel 102 is fixedly connected to a second lug 103. A damping piston is installed at one end of the auxiliary barrel 102 located inside the cylinder 101. A damping hole is opened on the damping piston. It is connected to the external building through the first lug 4 and the second lug 103. Under small load, the friction between the outer cylinder 2 and the friction protection sleeve 3 is large. At this time, the cylinder 101 and the auxiliary barrel 102 slide relative to each other. At this time, the viscous fluid inside the cylinder 101 consumes energy first through the viscous resistance generated by the damping hole on the damping piston.

[0026] These damping orifices play a crucial role in the operation of the damper. When the structure moves due to vibration, earthquake, or other reasons, it will cause relative movement between the cylinder 101 and the damping piston of the damper. The damping piston moves within the cylinder 101, forcing the viscous fluid through the damping orifices on the damping piston, thereby generating viscous damping force.

[0027] like Figure 2 and Figure 4 As shown: In this embodiment, the outer cylinder 2 includes two clamping half-rings 201. The two clamping half-rings 201 are fixedly connected to the outer surface of the cylinder body 101 through a locking assembly 202. The clamping half-ring 201 includes a sleeve 2011 and a convex ring 2012 fixedly connected to the inner wall of one end of the sleeve 2011. The convex ring 2012 fits against the outer surface of the cylinder body 101. The locking assembly 202 includes two clamping plates 2021. The two ends of the two clamping plates 2021 are fixedly connected by bolts 2022. The middle part of the clamping plate 2021 is adapted to the shape of the sleeve 2011. In this way, the clamping half-rings 201 can be fixed to the outer surface of the cylinder body 101 through the locking assembly 202. At this time, the outer cylinder 2 presses the friction protective sleeve 3 through the first friction plate 5 and the second friction plate 6.

[0028] To prevent the friction protective sleeve 3 from detaching from the outer cylinder 2, such as Figure 2 and Figure 5 As shown: In this embodiment, the friction protective sleeve 3 has an annular structure and an opening 301 at one end. A limiting ring 302 is fixedly connected to the outer surface of the friction protective sleeve 3 at the opening 301. A limiting groove 303 corresponding to the limiting ring 302 is opened on the inner wall of the sleeve 2011 near the convex ring 2012. During installation, the friction protective sleeve 3 is sleeved on the second friction plate 6 on the outer surface of the cylinder 101 through the opening 301 at one end. Then, two pressing half rings 201 are sleeved on the outer surface of the friction protective sleeve 3, and the limiting ring 302 is located in the limiting groove 303. Then, the pressing half rings 201 are fixed to the outer surface of the cylinder 101 by the locking assembly 202, so that the outer cylinder 2 and the viscous damper body 1 are fixed together.

[0029] To facilitate the fixed connection of the first ear seat 4 and the friction protective sleeve 3, such as Figure 2 and Figure 5 As shown: In this embodiment, the friction protective sleeve 3 has a through hole 304 at the end away from the opening 301, and a threaded post 401 is fixedly connected to one end of the first ear seat 4. The threaded post 401 passes through the through hole 304 and is fixedly connected to the friction protective sleeve 3 through the locking nut 402.

[0030] Working principle: Under small loads (such as daily wind vibration or small earthquakes), the friction between the outer cylinder 2 and the cylinder 101 and the friction protective sleeve 3 is relatively large. At this time, the cylinder 101 and the auxiliary cylinder 102 will slide relative to each other. The viscous fluid inside the cylinder 101 dissipates energy first through the viscous resistance generated by the damping hole on the damping piston. When the load exceeds the set threshold (such as strong earthquakes or typhoons), the friction assembly consisting of the outer cylinder 2, the cylinder 101 and the friction protective sleeve 3 is activated. The energy is further dissipated through the sliding friction of the contact surfaces of the first friction plate 5 and the second friction plate 6. This staged energy dissipation mode not only solves the fatigue problem of traditional friction dampers under small earthquakes, but also makes up for the insufficient energy dissipation of viscous dampers under large earthquakes, significantly improving the safety and durability of the structure.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A frictional-viscous protective damper, comprising a viscous damper body (1), characterized in that: An outer cylinder (2) is fixedly connected to the outer surface of the viscous damper body (1). A friction protective sleeve (3) is slidably disposed between the outer cylinder (2) and the viscous damper body (1). A first lug (4) is fixedly connected to the end of the friction protective sleeve (3) away from the viscous damper body (1). A first friction plate (5) and a second friction plate (6) are fixedly connected to the inner wall of the outer cylinder (2) on the side close to the viscous damper body (1). The first friction plate (5) and the second friction plate (6) are both in contact with the friction protective sleeve (3).

2. The friction-viscosity protection damper according to claim 1, characterized in that, The viscous damper body (1) includes a cylinder (101) and an auxiliary barrel (102) slidably connected to the cylinder (101), and a second ear seat (103) is fixedly connected to the other end of the auxiliary barrel (102).

3. The friction-viscosity protection damper according to claim 2, characterized in that, The auxiliary barrel (102) is equipped with a damping piston at one end inside the cylinder body (101), and the damping piston has a damping hole.

4. The friction-viscosity protection damper according to claim 2, characterized in that, The outer cylinder (2) includes two clamping half rings (201), which are fixedly connected to the outer surface of the cylinder body (101) by a locking assembly (202). Each clamping half ring (201) includes a sleeve (2011) and a convex ring (2012) fixedly connected to the inner wall of one end of the sleeve (2011). The convex ring (2012) is in contact with the outer surface of the cylinder body (101).

5. The friction-viscosity protection damper according to claim 4, characterized in that, The locking assembly (202) includes two clamping plates (2021), the two ends of which are fixedly connected by bolts (2022), and the middle part of the clamping plate (2021) is adapted to the shape of the sleeve (2011).

6. The friction-viscosity protection damper according to claim 5, characterized in that, The friction protection sleeve (3) has a ring structure and an opening (301) at one end. A limiting ring (302) is fixedly connected to the outer surface of the end of the friction protection sleeve (3) located at the opening (301). A limiting groove (303) corresponding to the limiting ring (302) is opened on the inner wall of the sleeve (2011) near the convex ring (2012).

7. The friction-viscosity protection damper according to claim 6, characterized in that, The friction protective sleeve (3) has a through hole (304) at one end away from the opening (301), and a threaded post (401) is fixedly connected to one end of the first ear seat (4). The threaded post (401) passes through the through hole (304) and is fixedly connected to the friction protective sleeve (3) through a locking nut (402).

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