Drum-type shearing viscous damper

Abstract

The invention discloses a drum-type shearing viscous damper which comprises an outer drum, a fixed lug ring, shearing viscous damping liquid and a sealing piece and further comprises a ball screw, a ball screw nut, a partition plate, a first thrust bearing, a second thrust bearing, a middle drum and an inner drum. High-speed rotation of the inner cylinder and the middle cylinder is achieved, rotation inertia force and viscous damping force are generated, the requirement for high-pressure sealing is avoided, the sealing problem possibly occurring in a high-pressure environment of a traditional viscous damper is solved, meanwhile, the high-pressure viscous damper is more economical and efficient, the material cost is reduced, an existing buckling support installation structure can be fully utilized, and the application range is wide. The application flexibility and continuity of the device are improved, the damping effect is improved, and meanwhile the cost and the maintenance difficulty are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dampers, and in particular to a roller-type shear viscous damper. Background Art

[0002] Viscous dampers, as a key vibration reduction device, primarily absorb and dissipate vibration energy in building structures or mechanical systems, thereby enhancing their resistance to dynamic effects such as earthquakes and wind loads. These devices play an indispensable role in improving a structure's seismic performance and extending its service life. The operating mechanism of traditional viscous dampers relies on the friction generated by the flow of a viscous fluid within their internal structure (e.g., a piston-cylinder combination). During dynamic structural activity (such as vibration or oscillation), the movement of the piston within the cylinder forces the viscous fluid through narrow slits or pores. The resulting flow resistance is converted into heat, effectively absorbing and dissipating vibration energy, significantly reducing the amplitude of the structural response. However, the vibration reduction effect relies heavily on the resistance generated by the fluid flow. Furthermore, due to design limitations such as the inflexibility of adjusting inertia and frequency, the impact on the physical mass of the structure, and low energy dissipation efficiency, traditional viscous dampers face challenges in effectively addressing a wide frequency range or varying dynamic loads. In particular, attempts to modify dynamic characteristics may increase the physical mass of the structure, thus affecting economic efficiency and safety. In addition, the use of viscous dampers in high-pressure environments requires higher requirements for sealing materials. Therefore, for the design and application of viscous dampers, it is urgent to solve these problems in order to fully realize their potential in modern engineering.

[0003] Currently, no effective solutions have been proposed for the above-mentioned problems in related technologies. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a roller-type shear viscous damper to solve the problems in the prior art.

[0005] The specific technical solutions adopted in the present invention are as follows: A roller-type shear viscous damper comprises an outer cylinder, a fixing earring, a shear viscous damping liquid, a seal, a ball screw, a ball screw nut, a partition, a first thrust bearing, a second thrust bearing, a middle cylinder, and an inner cylinder; A partition is provided inside the outer cylinder to divide the outer cylinder into a stroke chamber and a shear chamber, and the center of the partition is penetrated by a ball screw; The ball screw, the ball screw nut, the thrust bearing 1 and the thrust bearing 2 are coaxial; The shear viscous damping liquid fills the gaps between the inner cylinder and the middle cylinder and between the middle cylinder and the outer cylinder; A thrust bearing 1 is provided between the middle cylinder and the outer cylinder, and a thrust bearing 2 is provided between the middle cylinder and the inner cylinder; The ball screw is provided with a ball screw nut with threaded connection; Seals are used to seal shear viscous damping liquids; One end of the outer cylinder and one end of the ball screw are respectively provided with fixing earrings.

[0006] Furthermore, the ball screw nut includes ball screw nut 1, which is fixed at one end of the middle tube, and thrust bearing 1 and thrust bearing 2 are fixed on both sides of the ball screw nut, respectively, wherein thrust bearing 1 is fixed on the partition, thrust bearing 2 is fixed on the inner tube, and the end of the inner tube away from thrust bearing 2 is fixed on the inner wall of the outer tube.

[0007] Furthermore, the ball screw nut includes ball screw nut 1 and ball screw nut 2, which are respectively threadedly connected to the two ends of the ball screw, two sets of thrust bearing 1 are arranged between the middle cylinder and the outer cylinder, and two sets of thrust bearing 2 are arranged between the middle cylinder and the inner cylinder, and the rotation directions of the inner cylinder and the middle cylinder are opposite.

[0008] Furthermore, the inner walls of the inner tube, the middle tube and the outer tube are all provided with shear surfaces 1 distributed at equal distances, and the outer walls of the middle tube and the inner tube are provided with shear surfaces 2.

[0009] Furthermore, a through hole is provided on one end of the partition plate and the outer tube, the through hole is movably connected to the ball screw, and a plurality of flow holes are opened at the ends of the partition plate and the outer tube.

[0010] Furthermore, a shear disk is provided inside the outer cylinder of the ball screw, and a shear slot is provided around the shear disk, and the shear slot is used to circulate shear viscous damping liquid.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) It avoids the need for high-pressure sealing and solves the sealing problem that may occur in traditional viscous dampers under high-pressure environments. At the same time, it is more economical and efficient, reduces material costs, can make full use of the existing flexure support installation structure, increases the application flexibility and sustainability of the device, improves the shock absorption effect, and reduces costs and maintenance difficulties, showing obvious technical and economic advantages.

[0012] (2) The amplification effect design of the inner and outer cylinders is adopted, which makes it easy to achieve a larger inertial mass with a smaller packaging mass, significantly improving the energy consumption efficiency. The design of the rotating shear mechanism of the inner and outer cylinders makes the energy consumption performance no longer strictly dependent on the piston movement speed, thereby improving the applicability and reliability of the device. At the same time, the volume and weight of the roller shear viscous damper are significantly reduced, simplifying the installation and maintenance process, and improving the efficiency and accuracy of motion conversion. In actual use, the effective combination of the shear surface and the viscous damping liquid achieves more efficient energy dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 2 is a schematic structural diagram of a roller-type shear viscous damper according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a roller shear viscous damper according to an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the internal structure of a roller shear viscous damper according to an embodiment of the present invention. Figure 2 ; Figure 4 2 is a structural schematic diagram of shear surface 1 and shear surface 2 of a roller-type shear viscous damper according to an embodiment of the present invention.

[0015] In the picture: 1. Outer cylinder; 2. Fixing earring; 3. Shear viscous damping liquid; 4. Seal; 5. Ball screw; 6. Ball screw nut; 7. Partition; 8. Thrust bearing 1; 9. Thrust bearing 2; 10. Middle cylinder; 11. Inner cylinder; 12. Ball screw nut 1; 13. Ball screw nut 2; 14. Shear surface 1; 15. Shear surface 2; 16. Flow hole; 17. Shear disk. DETAILED DESCRIPTION

[0016] To further illustrate the technical solution of the present application, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the implementation methods and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the implementation methods. With reference to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components. Example 1

[0017] like Figure 1 - Figure 2 As shown, the present invention provides the following technical solutions: a roller-type shear viscous damper, comprising an outer cylinder 1, a fixing earring 2, a shear viscous damping liquid 3, a seal 4, a ball screw 5, a ball screw nut 6, a partition 7, a thrust bearing 1 8, a thrust bearing 2 9, a middle cylinder 10 and an inner cylinder 11; Among them, the inner tube 11, the middle tube 10 and the outer tube 1 use the rotational shear viscous damping liquid 3 to dissipate energy during actual use, thereby amplifying the inertial mass and enhancing the energy dissipation effect; A partition 7 is provided inside the outer cylinder 1 to divide the outer cylinder 1 into a stroke chamber and a shear chamber. The center of the partition 7 is penetrated by a ball screw 5. The ball screw 5, the ball screw nut 6, the thrust bearing 1 8 and the thrust bearing 2 9 are coaxial; The shear viscous damping liquid 3 fills the gaps between the inner cylinder 11 and the middle cylinder 10 and between the middle cylinder 10 and the outer cylinder 1; A thrust bearing 1 8 is provided between the middle cylinder 10 and the outer cylinder 1, and a thrust bearing 2 9 is provided between the middle cylinder 10 and the inner cylinder 11; The ball screw 5 is provided with a ball screw nut 6 which is threadedly connected; The sealing member 4 is used to seal the shear viscosity damping liquid 3. The sealing member 4 can be a bellows or a rubber tube; One end of the outer cylinder 1 and one end of the ball screw 5 are respectively provided with fixing earrings 2, which facilitate the fixing of the roller shear viscous damper in the building structure.

[0018] The ball screw nut 6 includes a ball screw nut 12, and the ball screw 5 is a one-way screw. The ball screw 5 is threadedly connected to the ball screw nut 12. The ball screw nut 12 is fixed to one end of the middle cylinder 10. Thrust bearing 1 8 and thrust bearing 2 9 are fixed on both sides of the ball screw nut 12 to support the rotating parts and ensure the smoothness of the movement. The thrust bearing 8 is fixed on the partition 7, and the thrust bearing 2 9 is fixed to the end of the inner cylinder 11. The end of the inner cylinder 11 away from the thrust bearing 2 9 is fixed to the inner wall of the outer cylinder 1.

[0019] The inner walls of the inner tube 11, the middle tube 10 and the outer tube 1 are all provided with equally spaced shear surfaces 14, the outer walls of the middle tube 10 and the outer walls of the inner tube 11 are provided with shear surfaces 15, and the partition 7 and one end of the outer tube 1 are both provided with through holes, which are movably connected to the ball screw 5. The ends of the partition 7 and the outer tube 1 are both provided with a plurality of flow holes 16, and the number of flow holes 16 is four. The flow holes 16 are located within the internal range of the seal 4, and the fixing point of the inner tube 11 and the outer tube 1 is located between the flow hole 16 and the through hole.

[0020] With the above technical solution, during installation, the fixed earring 2 is installed at the building where it is to be installed. When the building shakes or vibrates, the fixed earring 2 provided on the ball screw 5 drives the ball screw 5 to move linearly. At the same time, the seal 4 provided on the outer cylinder 1 and the partition 7 contracts or expands respectively as the ball screw 5 moves, thereby driving the shear viscous damping fluid 3 in the stroke chamber and the shear chamber to circulate within the flow hole 16. During movement, the ball screw 5 drives the ball screw nut 12 to rotate, thereby driving the middle cylinder 10 to rotate within the constraints of the thrust bearing 1 8 and the thrust bearing 2 9. At this time, the shear surface 14 provided on the inner wall of the inner cylinder 11, the middle cylinder 10, and the outer cylinder 1, as well as the shear surface 2 15 provided on the outer wall of the middle cylinder 10 and the outer wall of the inner cylinder 11, shear the flowing shear viscous damping fluid 3. In this way, the vibration of the building can be offset, thereby increasing the application flexibility and sustainability of the device and improving the shock absorption effect. Example 2

[0021] like Figure 1 、 Figure 3 and Figure 4 As shown, the present invention provides the following technical solutions: a roller-type shear viscous damper, comprising an outer cylinder 1, a fixing earring 2, a shear viscous damping liquid 3, a seal 4, a ball screw 5, a ball screw nut 6, a partition 7, a thrust bearing 1 8, a thrust bearing 2 9, a middle cylinder 10 and an inner cylinder 11; Among them, the inner tube 11, the middle tube 10 and the outer tube 1 use the rotational shear viscous damping liquid 3 to dissipate energy during actual use, thereby amplifying the inertial mass and enhancing the energy dissipation effect; A partition 7 is provided inside the outer cylinder 1 to divide the outer cylinder 1 into a stroke chamber and a shear chamber. The center of the partition 7 is penetrated by a ball screw 5. The ball screw 5, the ball screw nut 6, the thrust bearing 1 8 and the thrust bearing 2 9 are coaxial; The shear viscous damping liquid 3 fills the gaps between the inner cylinder 11 and the middle cylinder 10 and between the middle cylinder 10 and the outer cylinder 1; A thrust bearing 1 8 is provided between the middle cylinder 10 and the outer cylinder 1, and a thrust bearing 2 9 is provided between the middle cylinder 10 and the inner cylinder 11; The ball screw 5 is provided with a ball screw nut 6 which is threadedly connected; The sealing member 4 is used to seal the shear viscosity damping liquid 3. The sealing member 4 can be a bellows or a rubber tube; One end of the outer cylinder 1 and one end of the ball screw 5 are respectively provided with fixing earrings 2, which facilitate the fixing of the roller shear viscous damper in the building structure.

[0022] The ball screw nut 6 includes a ball screw nut 12 and a ball screw nut 2 13. The size of the ball screw nut 2 13 fixed at the end of the inner cylinder 11 is smaller than the size of the ball screw nut 12 fixed at the end of the middle cylinder 10. When the ball screw 5 is a bidirectional nut ball screw 5 with positive and negative threads, the ball screw nut 12 and the ball screw nut 2 13 are respectively threadedly connected to the two ends of the ball screw 5. Two sets of thrust bearings 1 8 are provided between the middle cylinder 10 and the outer cylinder 1, and two sets of thrust bearings 2 9 are provided between the middle cylinder 10 and the inner cylinder 11. The inner cylinder 11 and the middle cylinder 10 rotate in opposite directions. The inner walls of the inner tube 11, the middle tube 10 and the outer tube 1 are all provided with equally spaced shear surfaces 14, the outer walls of the middle tube 10 and the outer walls of the inner tube 11 are provided with shear surfaces 15, the partition 7 and one end of the outer tube 1 are both provided with through holes, the through holes are movably connected to the ball screw 5, the end of the partition 7 and the outer tube 1 are both provided with a plurality of flow holes 16, the number of flow holes 16 is four, the flow holes 16 are located within the internal range of the seal 4, the fixing point of the inner tube 11 and the outer tube 1 is located between the flow hole 16 and the through hole, the ball screw 5 is provided with a shear disk 17 inside the outer tube 1, and a shear slit is provided around the shear disk 17, and the shear slit is used to circulate the shear viscous damping liquid 3; The ball screw 5 converts axial linear motion into rotational motion through the ball screw nut 6. The ball screw nut 6 realizes high-speed rotation of the inner cylinder 11 and the middle cylinder 10 through the thrust bearing 1 8 and the thrust bearing 2 9. In addition, the opposite rotation direction generates a reverse force, which is used to increase the inertia force and viscous damping force generated by the mutual rotation, further increasing the resistance effect of the viscous damper.

[0023] Specifically, during installation, the fixed earring 2 is installed at the building where it needs to be installed. When vibration occurs, the ball screw 5 will be displaced. At this time, during movement, under the restriction of the positive teeth and negative teeth on the ball screw 5, the ball screw nut 12 and the ball screw nut 2 13 respectively drive the middle cylinder 10 and the inner cylinder 11 to rotate relative to each other. The thrust bearing 1 8 and the thrust bearing 2 9 will assist the middle cylinder 10 and the inner cylinder 11 to rotate relative to each other. The shear surface 14 provided on the inner walls of the inner cylinder 11, the middle cylinder 10 and the outer cylinder 1 and the shear surface 2 15 provided on the surfaces of the inner cylinder 11 and the middle cylinder 10 facilitate the shearing of the flowing shear viscosity damping liquid 3, which is conducive to increasing the damping effect. The shear disk 17 provided on the ball screw 5 is conducive to assisting shearing, improving conversion efficiency and energy consumption capacity, reducing volume, reducing costs, and improving adjustability. It is suitable for architectural designs with different needs and effectively improves the seismic resistance of the building.

[0024] To sum up, with the help of the above technical solution of the present invention, during operation, the ball screw 5 converts the axial linear motion into rotational motion through the ball screw nut 6, and the ball screw nut 6 realizes high-speed rotation of the inner cylinder 11 and the middle cylinder 10 through the thrust bearing 1 8 and the thrust bearing 2 9, generating rotational inertia force and viscous damping force, which is conducive to increasing the damping effect, improving conversion efficiency and energy consumption capacity, reducing volume, reducing costs, and improving adjustability. It is suitable for architectural designs with different needs and effectively improves the seismic resistance of the building.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A roller-type shear viscous damper, comprising an outer cylinder (1), a fixing earring (2), a shear viscous damping liquid (3), and a sealing member (4), characterized in that: It also includes a ball screw (5), a ball screw nut (6), a partition (7), a thrust bearing 1 (8), a thrust bearing 2 (9), a middle cylinder (10) and an inner cylinder (11); A partition (7) is provided in the outer cylinder (1) to divide the outer cylinder (1) into a stroke chamber and a shear chamber, and a ball screw (5) penetrates the center of the partition (7); The ball screw (5), ball screw nut (6), thrust bearing 1 (8) and thrust bearing 2 (9) are coaxial; The shear viscosity damping liquid (3) fills the gaps between the inner cylinder (11) and the middle cylinder (10) and the gaps between the middle cylinder (10) and the outer cylinder (1); A thrust bearing 1 (8) is provided between the middle cylinder (10) and the outer cylinder (1), and a thrust bearing 2 (9) is provided between the middle cylinder (10) and the inner cylinder (11); The ball screw (5) is provided with a ball screw nut (6) connected by a thread; The sealing member (4) is used to seal the shear viscous damping liquid (3); One end of the outer cylinder (1) and one end of the ball screw (5) are respectively provided with a fixing earring (2).

2. The roller shear viscous damper according to claim 1, characterized in that: The ball screw nut (6) includes a ball screw nut (12), the ball screw nut (12) is fixed to one end of the middle cylinder (10), and the thrust bearing (8) and the thrust bearing (9) are fixed on both sides of the ball screw nut (6), respectively, wherein the thrust bearing (8) is fixed on the partition (7), and the thrust bearing (9) is fixed on the inner cylinder (11), and the end of the inner cylinder (11) away from the thrust bearing (9) is fixed to the inner wall of the outer cylinder (1).

3. The roller shear viscous damper according to claim 1, characterized in that: The ball screw nut (6) includes a ball screw nut 1 (12) and a ball screw nut 2 (13), wherein the ball screw nut 1 (12) and the ball screw nut 2 (13) are respectively threadedly connected to the two ends of the ball screw (5), two sets of thrust bearings 1 (8) are provided between the middle cylinder (10) and the outer cylinder (1), and two sets of thrust bearings 2 (9) are provided between the middle cylinder (10) and the inner cylinder (11), and the inner cylinder (11) and the middle cylinder (10) rotate in opposite directions.

4. The roller shear viscous damper according to claim 1, characterized in that: The inner walls of the inner tube (11), the middle tube (10) and the outer tube (1) are all provided with shear surfaces (14) distributed at equal distances, and the outer walls of the middle tube (10) and the inner tube (11) are provided with shear surfaces (15).

5. The roller shear viscous damper according to claim 1, characterized in that: The partition (7) and one end of the outer tube (1) are both provided with a through hole, the through hole is movably connected to the ball screw (5), and the ends of the partition (7) and the outer tube (1) are both provided with a plurality of flow holes (16).

6. The roller shear viscous damper according to claim 3, characterized in that: A shear disc (17) is provided on the ball screw (5) inside the outer cylinder (1), and a shear slit is provided around the shear disc (17). The shear slit is used to circulate the shear viscous damping liquid (3).

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