Double-acting viscous damper
By introducing a compressed spring into the viscous damper and combining the damping force of the viscous damping liquid, the vibration damping performance of the damper is optimized, the problem of insufficient damping force in the prior art is solved, and the stability of the structure during the impact process is significantly improved.
Patent Information
- Application Number
- CN202422118921.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Under the impact load in the horizontal direction, the existing viscous damping force is small, and the impact energy cannot be effectively converted into thermal energy, resulting in large vibration displacement and acceleration of the structure during the impact process, increasing the possibility of structural damage.
A double-acting viscous damper is designed. By setting multiple compression springs on the inner wall of the lower housing, the compression springs and viscous damping fluid work together to provide different resistance characteristics at different stages of movement, optimizing the vibration damping performance of the entire damper.
The compression spring compensates for the damping force generated by the damping liquid, providing a larger damping force, improving stability, allowing the viscous damper to better cope with complex vibration conditions and reducing the vibration displacement and acceleration of the structure during the impact process.
Smart Images
Figure CN222937155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of viscous dampers, and particularly relates to a double-acting viscous damper. Background Technique
[0002] In the 1950s, viscous dampers, as excellent energy-dissipating and shock-absorbing (vibration-damping) structural components, were applied in machinery, vehicles, aerospace, and military engineering. In the 1970s, they were introduced into industries such as buildings, bridges, railways, power plants, and steel mills to resist vibrations caused by earthquakes, wind vibrations, or other external loads, achieving good results. With the rapid development of the structural shock-absorbing (vibration-damping) industry, in recent years, viscous dampers have gradually developed and been applied in the field of civil engineering in China, and have been gradually applied to engineering projects such as bridge engineering, high-rise buildings, and equipment foundations.
[0003] Under the action of horizontal impact loads, due to the small damping force of the viscous damper, the impact energy cannot be effectively converted into heat energy and other forms for dissipation. As a result, the structure will still experience large vibration displacements and accelerations during the impact process, increasing the possibility of structural damage. Content of the Utility Model
[0004] The purpose of the utility model is to solve the problem that in the prior art, under the action of horizontal impact loads, due to the small damping force of the viscous damper, the impact energy cannot be effectively converted into heat energy and other forms for dissipation. As a result, the structure will still experience large vibration displacements and accelerations during the impact process, increasing the possibility of structural damage. A double-acting viscous damper is proposed.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A double-acting viscous damper includes a lower connecting plate. A lower housing is arranged at the top of the lower connecting plate. An upper housing is arranged at the top of the lower housing. An upper connecting plate is connected to the top of the upper housing. A plunger is arranged at the bottom of the upper connecting plate. The plunger is arranged inside the upper housing. A damping liquid is arranged inside the lower housing. A plurality of compression springs are arranged on the inner wall of the lower housing.
[0006] Preferably, a sealing sleeve is arranged on the outer side of the upper housing, and the lower end of the sealing sleeve is sleeved on the lower housing.
[0007] Preferably, a counterbore is arranged on the side wall of the plunger, and one end of the compression spring is connected to the inside of the counterbore.
[0008] Compared with the prior art, the advantages and positive effects of the utility model are as follows.
[0009] In the present utility model, a compression spring can compensate for the damping force generated by the damping fluid. Acting together with the viscous damping fluid, it provides different resistance characteristics at different motion stages, thereby optimizing the vibration damping performance of the entire damper and enabling it to better handle complex vibration conditions. The use of a compression spring can provide a large damping force, enhancing stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 FIG. is a schematic cross-sectional structure diagram of a double-acting viscous damper proposed by the present utility model.
[0011] LEGEND: 1. Lower connecting plate; 2. Lower housing; 3. Compression spring; 4. Damping fluid; 5. Sealing sleeve; 6. Upper housing; 7. Plunger; 8. Upper connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0013] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited to the limitations of the specific embodiments disclosed in the following specification.
[0014] Embodiment 1
[0015] As Figure 1 shown, the present utility model provides a technical solution: a double-acting viscous damper, including a lower connecting plate 1, a lower housing 2 is provided at the top of the lower connecting plate 1, an upper housing 6 is provided at the top of the lower housing 2, an upper connecting plate 8 is connected to the top of the upper housing 6, a plunger 7 is provided at the bottom of the upper connecting plate 8, the plunger 7 is arranged inside the upper housing 6, a damping fluid 4 is provided inside the lower housing 2, and a plurality of compression springs 3 are provided on the inner wall of the lower housing 2.
[0016] In this embodiment, during installation, the upper connecting plate 8 is fixed to the pipeline through a pipe clamp accessory, and the lower connecting plate 1 is fixed to a stable bracket. During use, when the pipeline vibrates, the vibration will be transmitted to the plunger 7 through the upper connecting plate 8. The plunger 7 will displace in the vibration direction. When the plunger 7 generates a horizontal displacement, it will exert a squeezing force on the compression spring 3, and the compression spring 3 will generate a reverse damping force. At the same time, the high-viscosity damping fluid 4 will also generate a damping force in the direction opposite to the vibration direction of the plunger 7, converting the vibration energy into heat and releasing it to the environment through the lower housing 2.
[0017] Embodiment 2
[0018] AsFigure 1 As shown in the figure, a sealing sleeve 5 is provided on the outer side of the upper housing 6. The lower end of the sealing sleeve 5 is sleeved on the lower housing 2. A counterbore is provided on the side wall of the plunger 7, and one end of the compression spring 3 is connected to the inner side of the counterbore.
[0019] In this embodiment, the sealing sleeve 5 ensures that the viscous damping fluid is always in the closed space inside the damper, maintains the normal working performance of the damper, prevents dust, moisture and other impurities from entering the inside of the damper, avoids contaminating the damping fluid and affecting its performance and service life. The counterbore facilitates the accurate positioning of the compression spring 3, ensures the installation accuracy and consistency, enables the damper to be correctly installed and function in the structure, helps to disperse the stress at the connection part, improves the reliability and stability of the connection, and enhances the bonding force between the damper and the connection structure.
[0020] The working principle of this embodiment: When in use, when the pipeline vibrates, the vibration will be transmitted to the plunger 7 through the upper connecting plate 8. The plunger 7 will displace in the vibration direction. When the plunger 7 generates a horizontal displacement, it will exert a squeezing force on the compression spring 3, and the compression spring 3 will generate a reverse damping force. At the same time, the high-viscosity damping fluid 4 will also generate a damping force in the direction opposite to the vibration direction of the plunger 7, and convert the vibration energy into heat and release it to the environment through the lower housing 2.
[0021] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A double-acting viscous damper, comprising a lower connecting plate (1), characterized in that: A lower shell (2) is arranged on the top of the lower connecting plate (1), an upper shell (6) is arranged on the top of the lower shell (2), the top of the upper shell (6) is connected to an upper connecting plate (8), a plunger (7) is arranged on the bottom of the upper connecting plate (8), and the plunger (7) is arranged on the inner side of the upper shell (6), a damping fluid (4) is arranged inside the lower shell (2), and a plurality of compression springs (3) are arranged on the inner wall of the lower shell (2).
2. The double-acting viscous damper according to claim 1, characterized in that: A sealing sleeve (5) is arranged on the outer side of the upper shell (6), and the lower end of the sealing sleeve (5) is sleeved on the lower shell (2).
3. The double-acting viscous damper according to claim 1, characterized in that: A countersunk hole is provided on the side wall of the plunger (7), and one end of the compression spring (3) is connected to the inner side of the countersunk hole.