Double-order viscous damper

Abstract

The utility model discloses a double-order viscous damper which comprises a main cylinder, an auxiliary cylinder installed on the right side of the main cylinder, a guide rod installed inside the main cylinder, the guide rod extending into the auxiliary cylinder, a main lug ring detachably installed on the left side of the guide rod, an auxiliary lug ring detachably installed at one end of the auxiliary cylinder, a damping component installed inside the main cylinder and sealing assemblies installed at the two ends of the main cylinder. The inner diameter of a main cylinder, the outer diameter of a piston and a gap between a guide pillar and the piston are in reciprocating motion through silicone oil under the conditions of different speeds and different displacement gaps, and the double-stage damping effect is achieved under the condition of the same cylinder body, so that kinetic energy input from the outside is weakened and converted into heat energy to be released. Therefore, the effects of energy dispersion, shock absorption and structural vibration reduction are achieved. The shock-absorbing and energy-dissipating device has different functions in different amplitudes, and can play an effective shock-absorbing and energy-dissipating role in large-amplitude and small-amplitude stage amplitudes generated in an earthquake.

Description

Technical Field

[0001] This utility model belongs to the field of damper technology, specifically relating to a two-stage viscous damper. Background Technology

[0002] Viscous dampers are structural components that reduce vibration, resist earthquakes, dissipate energy, disperse energy, and mitigate structural vibrations. These products are widely used in schools, hospitals, nursing homes, kindergartens, and railway stations as well as in civil defense projects.

[0003] Traditional viscous dampers typically employ a single-stage damping characteristic, providing a constant damping force throughout the entire stroke. However, in practical applications, the kinetic energy input often exhibits complex and variable characteristics, such as the phased changes between large and small amplitudes in seismic waves. This single-stage damping characteristic may not be able to fully realize its vibration reduction and energy dissipation effect when faced with complex dynamic inputs, resulting in the structure still facing significant vibration risks under certain specific operating conditions. Utility Model Content

[0004] The purpose of this invention is to provide a two-stage viscous damper to solve the damping problem in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A two-stage viscous damper includes a main cylinder, an auxiliary cylinder mounted on the right side of the main cylinder, a guide rod installed inside the main cylinder extending into the auxiliary cylinder, a main lug detachably mounted on the left side of the guide rod, an auxiliary lug detachably mounted on one end of the auxiliary cylinder, a damping component mounted on the guide rod inside the main cylinder, and sealing assemblies mounted at both ends of the main cylinder.

[0007] Furthermore, the auxiliary earring is assembled with the auxiliary cylinder via a threaded connection, the left end of the guide rod extends to the outside of the main cylinder, the left end of the guide rod is provided with a connecting end, and the main earring is threadedly connected to the connecting end.

[0008] Furthermore, both the secondary earring and the main earring are equipped with spherical bearings. The spherical bearings are suitable for components requiring rotational damping, improving the product's connection flexibility and allowing for positional shifts during damping.

[0009] Furthermore, the damping component includes a guide sleeve and a piston. The guide sleeve is installed on both sides inside the main cylinder. The piston is sleeved around the guide rod, and the guide rod is placed between the guide sleeves. Pressure rings are installed at both ends of the piston and are placed between the piston and the guide rod. The space between the guide sleeves is filled with silicone oil.

[0010] Furthermore, guide posts are installed between the guide sleeves, and the piston slides through the guide posts. The guide posts improve the stability of piston sliding, and at the same time, they improve the concentricity of the overall structure during the installation of the piston and guide rod, simplifying assembly and improving installation efficiency.

[0011] Furthermore, the guide sleeve has an internal air vent, and a screw is threaded onto one side of the air vent. During installation, if the pressure inside the main cylinder is too high, the pressure can be released through the air vent by loosening the screw. This assembly method is lightweight, labor-saving, and less prone to defects, thus improving assembly efficiency.

[0012] Furthermore, the sealing assembly includes a gland, which is installed at one end of the guide sleeve near the outer wall of the main cylinder. A dust cover is installed on one side of the gland, and a clamping nut is installed on the connecting end. The dust cover acts between the gland and the clamping nut.

[0013] Furthermore, an oil seal and a support ring are installed on the inner diameter of the guide sleeve, and the oil seal and support ring act on the outer diameter of the guide rod. The oil seal and support ring effectively prevent silicone oil leakage and prevent external impurities from entering.

[0014] Furthermore, an O-ring is installed on the outer diameter of the guide sleeve, and the O-ring acts on the inner wall of the master cylinder. The O-ring is used to further improve the compactness of the overall structure.

[0015] The technical solution of this utility model has the following beneficial effects:

[0016] 1. By utilizing the gaps between the inner diameter of the main cylinder and the outer diameter of the piston, and between the guide column and the piston, and through the reciprocating motion of silicone oil at different speeds and displacement gaps, a two-stage damping effect is achieved within the same cylinder size. This weakens the externally input kinetic energy and converts it into heat energy for release. This achieves the effects of dispersing energy, reducing vibration, and mitigating structural vibration. Its role varies with amplitude; in earthquakes, it effectively reduces vibration and dissipates energy in both large and small amplitude stages. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

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

[0019] Reference numerals: 10. Master cylinder; 11. Auxiliary cylinder; 12. Guide post; 13. Auxiliary lug; 14. Master lug; 15. Compression nut; 16. Pressure cap; 17. Dust cover; 18. Guide rod; 181. Connecting end; 19. Oil seal; 20. Support ring; 21. Pressure ring; 22. Piston; 23. Silicone oil; 24. Spherical bearing; 25. Screw; 26. O-ring; 27. Guide sleeve; 271. Air vent. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] Example 1:

[0022] refer to Figure 1 A two-stage viscous damper includes a main cylinder 10, an auxiliary cylinder 11 installed on the right side of the main cylinder 10, a guide rod 18 installed inside the main cylinder 10, the guide rod 18 extending into the auxiliary cylinder 11, a main lug 14 detachably attached to the left side of the guide rod 18, and an auxiliary lug 13 detachably attached to one end of the auxiliary cylinder 11.

[0023] In the above scheme, the secondary earring 13 and the main earring 14 are installed between the components that require damping and shock absorption. The guide rod 18 is slidably installed inside the main cylinder 10. When the guide rod 18 is displaced to the right, the product generates a damping function, thereby achieving a shock absorption effect between the components.

[0024] Further reference Figure 1 The auxiliary earring 13 is assembled with the auxiliary cylinder 11 by a threaded connection. The left end of the guide rod 18 extends to the outside of the main cylinder 10. The left end of the guide rod 18 is provided with a connecting end 181. The main earring 14 is threadedly connected to the connecting end 181.

[0025] In a further implementation, the secondary earring 13 and the main earring 14 are connected to the secondary cylinder 11 and the guide rod 18 respectively using a split connection method. The threaded connection method enables quick installation and disassembly, resulting in a simple structure and high installation efficiency. At the same time, the split connection allows the secondary earring 13 or the main earring 14 to be disassembled as needed, and the guide rod 18 or the secondary cylinder 11 to be directly connected to the component requiring damping and shock absorption.

[0026] In a preferred embodiment, both the secondary earring 13 and the main earring 14 are equipped with spherical bearings 24. The spherical bearings 24 are suitable for components that require rotational damping and shock absorption, improving the connection flexibility of the product and allowing the position of the invention to deflect during damping and shock absorption.

[0027] refer to Figure 1 A damping component is installed on the guide rod 18 inside the master cylinder 10. The damping component includes a guide sleeve 27 and a piston 22. The guide sleeve 27 is installed on both sides inside the master cylinder 10. The piston 22 is sleeved around the guide rod 18. The guide rod 18 is placed between the guide sleeves 27. Pressure rings 21 are installed at both ends of the piston 22. The pressure rings 21 are placed between the piston 22 and the guide rod 18. The space between the guide sleeves 27 is filled with silicone oil 23.

[0028] In the above scheme, the piston 22 is fixed on the guide rod 18 by the pressure ring 21. The guide rod 18 moves to the right and drives the piston 22 to move synchronously. That is, the piston 22 is compressed in the silicone oil 23, thereby generating a damping and shock absorption effect.

[0029] Furthermore, guide posts 12 are installed between the guide sleeves 27, and the piston 22 slides through the guide posts 12. The guide posts 12 improve the sliding stability of the piston 22, and at the same time, they can improve the concentricity of the overall structure when installing the piston 22 and the guide rod 18, simplifying assembly and improving installation efficiency.

[0030] In the preferred embodiment, the guide sleeve 27 has an air vent 271 inside, and a screw 25 is threaded onto one side of the air vent 271. When installing this product, if the internal pressure of the main cylinder 10 is too high, the pressure can be released through the air vent 271 by loosening the screw 25. This type of assembly is easy and labor-saving, less prone to defects, and improves assembly efficiency.

[0031] In summary, by utilizing the gaps between the inner diameter of the main cylinder 10 and the outer diameter of the piston 22, and between the guide post 12 and the piston 22, and through the reciprocating motion of the silicone oil 23 at different speeds and displacement gaps, a two-stage damping effect is achieved within the same cylinder size. This weakens the externally input kinetic energy and converts it into heat energy for release. This achieves the effects of dispersing energy, reducing vibration, and mitigating structural vibration. Its role varies with different amplitudes; in earthquakes, it effectively reduces vibration and dissipates energy in both large and small amplitude stages.

[0032] refer to Figure 1 The main cylinder 10 is equipped with sealing components at both ends. The sealing components include a pressure cap 16, which is installed at one end of the guide sleeve 27 near the outer wall of the main cylinder 10. A dust cover 17 is installed on one side of the pressure cap 16, and a clamping nut 15 is installed on the connecting end 181. The dust cover 17 acts between the pressure cap 16 and the clamping nut 15.

[0033] In the above scheme, when the guide rod 18 is reciprocating, the dust cover 17 can cover the exposed outer diameter of the guide rod 18, preventing external dust from being covered on the guide rod 18 and being carried into the main cylinder 10, thus improving the dustproof sealing function of the overall structure; the pressure cap 16 seals both ends of the main cylinder 10, so that a good working chamber is formed inside the main cylinder 10.

[0034] Furthermore, an oil seal 19 and a support ring 20 are installed on the inner diameter of the guide sleeve 27, and the oil seal 19 and the support ring 20 act on the outer diameter of the guide rod 18. The oil seal 19 and the support ring 20 effectively prevent the leakage of silicone oil 23 and prevent the intrusion of external impurities.

[0035] In a preferred embodiment, an O-ring 26 is installed on the outer diameter of the guide sleeve 27, and the O-ring 26 acts on the inner wall of the master cylinder 10. The O-ring 26 is used to further improve the compactness of the overall structure.

[0036] Example 2:

[0037] The secondary earring 13 is made of 45 steel in one piece by forging, which reduces the labor cost of bolt connection and welding. This improvement has greatly enhanced the structural strength of the damper secondary earring 13.

[0038] The specific implementation process of this utility model is as follows:

[0039] By utilizing the gaps between the inner diameter of the master cylinder 10 and the outer diameter of the piston 22, and between the guide post 12 and the piston 22, the silicone oil 23 reciprocates under different speeds and different displacement gaps, achieving a two-stage damping effect under the same cylinder conditions, thereby weakening the externally input kinetic energy and converting it into heat energy for release.

[0040] The above embodiments are merely exemplary models of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions can be made to this utility model within its substance and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached circle, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limitations on this utility model.

[0042] In the description of this utility model, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between components; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

Claims

1. A dual-stage viscous damper, characterized by: It includes a main cylinder (10), a vice cylinder (11) is installed on the right side of the main cylinder (10), a guide rod (18) is installed inside the main cylinder (10), the guide rod (18) extends into the vice cylinder (11), a main ear ring (14) is detachably installed on the left side of the guide rod (18), a vice ear ring (13) is detachably installed on one end of the vice cylinder (11), a damping component is installed on the guide rod (18) inside the main cylinder (10), and a sealing assembly is installed at both ends of the main cylinder (10); The damping component includes a guide sleeve (27) and a piston (22), the guide sleeve (27) is installed on both sides inside the main cylinder (10), the piston (22) is sleeved on the periphery of the guide rod (18), the guide rod (18) is arranged between the guide sleeves (27), and a compression ring (21) is installed at both ends of the piston (22), the compression ring (21) is arranged between the piston (22) and the guide rod (18), and the guide sleeves (27) are filled with silicon oil (23); A guide column (12) is installed between the guide sleeves (27), and the piston (22) slides through the guide column (12).

2. The dual-stage viscous damper of claim 1, wherein: The vice ear ring (13) is assembled with the vice cylinder (11) in a threaded connection mode, the left end of the guide rod (18) extends out of the main cylinder (10), the left end of the guide rod (18) is provided with a connecting end (181), and the main ear ring (14) is assembled with the connecting end (181) in a threaded connection mode.

3. The dual-stage viscous damper of claim 2, wherein: The vice ear ring (13) and the main ear ring (14) are both provided with a joint bearing (24).

4. The dual-stage viscous damper of claim 1, wherein: A gas guide hole (271) is formed in the guide sleeve (27), and a screw (25) is threadedly connected on one side of the gas guide hole (271).

5. The dual-stage viscous damper of claim 2, wherein: The sealing assembly includes a gland (16), the gland (16) is installed on one end of the guide sleeve (27) close to the outer wall of the main cylinder (10), a dust cover (17) is installed on one side of the gland (16), a compression nut (15) is installed on the connecting end (181), and the dust cover (17) acts between the gland (16) and the compression nut (15).

6. The dual-stage viscous damper of claim 5, wherein: An oil seal (19) and a support ring (20) are installed in the inner diameter of the guide sleeve (27), and the oil seal (19) and the support ring (20) act on the outer diameter of the guide rod (18).

7. The dual-stage viscous damper of claim 6, wherein: An O-shaped ring (26) is installed on the outer diameter of the guide sleeve (27), and the O-shaped ring (26) acts on the inner wall of the main cylinder (10).

8. The dual-stage viscous damper of claim 1, wherein: The vice ear ring (13) is integrally forged from 45 steel.

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