Gapless viscous damper

Abstract

The gapless viscous damper comprises a main cylinder, an auxiliary cylinder and a guide rod, the auxiliary cylinder is installed on the right side of the main cylinder, the guide rod is movably installed in the main cylinder and extends into the auxiliary cylinder, and a piston used for sliding on the inner wall of the main cylinder is installed on the guide rod. The clamping assembly is used for assembling the guide rod and the piston, the first clamping key, the second clamping key and the third clamping key are installed between the guide rod and the piston, an original thread or welding mode of the piston is changed into a groove three-clamping-key mode, the concentricity of the guide rod is greatly guaranteed through the connecting mode structure, the welding portion is reduced, and the service life of the guide rod is prolonged. And the environmental protection requirement is reduced. The assembling is simple, and the production efficiency is high. And when concentricity is ensured, the damper can distribute pressure of an oil film / silicone oil more uniformly in the working process, so that vibration energy is more effectively absorbed and attenuated, the vibration amplitude is reduced, and the vibration reduction effect is improved. And meanwhile, the unbalance phenomenon of the damper in the working process is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of damper technology, specifically relating to gapless viscous dampers. 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] Clearanceless viscous dampers, as a novel type of vibration reduction device, have overcome many shortcomings in the structure and performance of traditional dampers. A key innovation in the design of clearanceless viscous dampers lies in the connection method between the guide rod and the piston. Traditional connection methods, such as threaded connections or welding, are not only complex in process but also make it difficult to ensure the concentricity of the guide rod, thus affecting the overall performance and stability of the damper. Utility Model Content

[0004] The purpose of this invention is to provide a gapless viscous damper to solve the assembly accuracy problem in the prior art.

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

[0006] A gapless viscous damper includes a main cylinder, a secondary cylinder, and a guide rod. The secondary cylinder is mounted on the right side of the main cylinder. The guide rod is movably mounted inside the main cylinder and extends into the secondary cylinder. A piston for sliding against the inner wall of the main cylinder is mounted on the guide rod. A snap-fit ​​assembly is also included for assembling the guide rod and the piston.

[0007] Furthermore, guide sleeves are installed at both ends of the main cylinder, and a pressure cap is installed on one side of the left guide sleeve, with silicone oil filling the space between the guide sleeves.

[0008] Furthermore, a dust cover is installed on one side of the pressure cap, and a clamping nut is installed on the left side of the guide rod.

[0009] Furthermore, the guide sleeve is provided with an air vent, and a screw is installed at one end of the air vent.

[0010] Furthermore, the snap-fit ​​assembly includes a snap-fit ​​slot, a first snap-fit ​​key, a second snap-fit ​​key, and a third snap-fit ​​key. The snap-fit ​​slots are respectively located at the front end, rear end, and middle end of the piston. The middle snap-fit ​​slot is centered between the front end and rear end snap-fit ​​slots. The front end, rear end, and middle end snap-fit ​​slots are respectively used to engage with the second snap-fit ​​key, the first snap-fit ​​key, and the third snap-fit ​​key. The outer wall of the guide rod is correspondingly provided with the front end, rear end, and middle end snap-fit ​​slots.

[0011] Furthermore, a connecting bolt is installed on one side of the auxiliary cylinder, and an assembly end is installed on both the connecting bolt and the clamping nut.

[0012] Furthermore, the assembly end includes a fixed column, a union flange, a ball bearing, and a connecting plate. The fixed column is located on the side of the connecting bolts and the clamping nut. One end of the fixed column is provided with a ball bearing. The fixed column is assembled with the union flange through the ball bearing. The union flange is fixedly installed on the connecting plate by bolts.

[0013] The technical solution of this utility model has the following beneficial effects:

[0014] 1. By installing a first, second, and third locking key between the guide rod and the piston, the previous threaded or welded piston connection is replaced with a grooved three-key connection. This connection structure greatly ensures the concentricity of the guide rod, reduces welding, and lowers environmental protection requirements. It also simplifies assembly and increases production efficiency. Ensuring concentricity allows for a more even distribution of oil film / silicone oil pressure during operation, thus more effectively absorbing and attenuating vibration energy, helping to reduce vibration amplitude and improve vibration damping. Simultaneously, it reduces imbalance during damping operation.

[0015] 2. The union flange is attached to one side of the connecting plate, and the union flange and the connecting plate are fixed to each other by multiple bolts, thereby improving the structural strength of the overall damper.

[0016] 3. The design of spherical bearings allows them to rotate freely within a certain range, which helps the damper respond flexibly to external forces and dissipate energy more effectively. At the same time, the use of spherical bearings allows them to adapt to various complex working conditions, including different installation angles and load variations. 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 structure of this utility model.

[0019] Figure 2 This is an enlarged view of section A of this utility model.

[0020] Figure 3 This is a diagram showing the installation and use of this utility model.

[0021] Figure 4 This is a plan view of the connecting plate of this utility model.

[0022] Reference numerals: 10. Main cylinder; 11. Auxiliary cylinder; 12. Guide rod; 13. Connecting bolt; 14. Fixing column; 15. Union flange; 16. Ball bearing; 20. Piston; 21. Slot; 22. First locking key; 201. Second locking key; 202. Third locking key; 23. Guide sleeve; 24. Air vent; 25. Screw; 26. Pressure cap; 27. Dust cover; 28. Compression nut; 30. Connecting plate; 40. Silicone oil. Detailed Implementation

[0023] 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.

[0024] Example 1:

[0025] refer to Figure 1 A gapless viscous damper includes a main cylinder 10, a secondary cylinder 11 and a guide rod 12. The secondary cylinder 11 is installed on the right side of the main cylinder 10. The guide rod 12 is movably installed inside the main cylinder 10 and extends into the secondary cylinder 11. A piston 20 for sliding with the inner wall of the main cylinder 10 is installed on the guide rod 12.

[0026] Guide sleeves 23 are installed at both ends of the main cylinder 10, and a pressure cap 26 is installed on one side of the left guide sleeve 23. Silicone oil 40 is filled between the guide sleeves 23.

[0027] When the damper is working: the guide rod 12 slides to the right, which synchronously drives the piston 20 to slide on the inner wall of the main cylinder 10. The piston 20 compresses the silicone oil 40, thereby generating a damping and shock absorption effect.

[0028] In the above scheme, the guide sleeves 23 installed at both ends and the pressure cap 26 installed on one side of the left guide sleeve 23 are used to maintain the concentricity of the guide rod 12 within the main cylinder 10. When the guide rod 12 is concentric, the damper can distribute the pressure of the oil film / silicone oil 40 more evenly during operation, thereby more effectively absorbing and attenuating vibration energy, helping to reduce vibration amplitude and improve vibration reduction effect. At the same time, it reduces the imbalance phenomenon of the damper during operation.

[0029] Further reference Figure 1 A dust cover 27 is installed on one side of the pressure cap 26, and a clamping nut 28 is installed on the left side of the guide rod 12.

[0030] In a further embodiment, when the guide rod 12 is reciprocating, the dust cover 27 can cover the exposed outer diameter of the guide rod 12, preventing external dust from being carried into the main cylinder 10 and improving the dustproof sealing function of the overall structure; the pressure cap 26 and the auxiliary cylinder 11 respectively seal the two ends of the main cylinder 10, so that a good working chamber is formed inside the main cylinder 10, further improving the dustproof effect.

[0031] In the preferred embodiment, the guide sleeve 23 has an air vent 24, and a screw 25 is installed at one end of the air vent 24. 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 24 by loosening the screw 25. This type of assembly is easy and labor-saving, reduces the likelihood of defective products, and improves assembly efficiency.

[0032] refer to Figure 1 and Figure 2 The snap-fit ​​assembly is used for the assembly between the guide rod 12 and the piston 20. The snap-fit ​​assembly includes a snap groove 21, a first snap button 22, a second snap button 201, and a third snap button 202. The snap groove 21 is respectively located at the front end, rear end, and middle end of the piston 20. The middle snap groove 21 is centered between the front end snap groove 21 and the rear end snap groove 21. The front end, rear end, and middle end snap grooves 21 are used to cooperate with the second snap button 201, the first snap button 22, and the third snap button 202, respectively. The outer wall of the guide rod 12 is correspondingly provided with the front end, rear end, and middle end snap grooves 21.

[0033] In the above solution, a first locking key 22, a second locking key 201, and a third locking key 202 are installed between the guide rod 12 and the piston 20. This replaces the previous threaded or welded connection of the piston 20 with a grooved three-key connection. This connection structure greatly ensures the concentricity of the guide rod 12, reduces welding, and lowers environmental protection requirements. It also achieves simple assembly and high production efficiency.

[0034] Example 2 (in conjunction with Example 1):

[0035] refer to Figures 1-4 A connecting bolt 13 is installed on one side of the auxiliary cylinder 11, and an assembly end is installed on one side of both the connecting bolt 13 and the clamping nut 28;

[0036] The assembly end includes a fixed column 14, a union flange 15, a ball bearing 16, and a connecting plate 30. The fixed column 14 is located on one side of the connecting bolt 13 and the clamping nut 28. One end of the fixed column 14 is provided with a ball bearing 16. The fixed column 14 is assembled with the union flange 15 through the ball bearing 16. The union flange 15 is fixedly installed on the connecting plate 30 by bolts.

[0037] In the above scheme, the union flange 15 is fitted onto one side of the connecting plate 30, and the union flange 15 and the connecting plate 30 are fixed together by multiple bolts, thereby improving the overall structural strength of the damper. The spherical bearing 16 can withstand various forces and torques from the damper, ensuring the stability of the damper in its installation position. This supporting role is crucial for the damper to perform its vibration reduction and energy dissipation functions properly. The design of the spherical bearing 16 allows it to rotate freely within a certain range, which helps the damper to respond flexibly to external forces and dissipate energy more effectively. At the same time, the use of the spherical bearing 16 allows it to adapt to various complex working conditions, including different installation angles and load changes.

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

[0039] When the damper is working: the guide rod 12 slides to the right, which synchronously drives the piston 20 to slide on the inner wall of the main cylinder 10. The piston 20 compresses the silicone oil 40, thereby generating a damping and shock absorption effect.

[0040] A first locking key 22, a second locking key 201, and a third locking key 202 are installed between the guide rod 12 and the piston 20, changing the previous threaded or welded method of the piston 20 to a grooved three-locking key method.

[0041] 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.

[0042] 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.

[0043] 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 gapless viscous damper, characterized by: Including main cylinder (10), auxiliary cylinder (11) and guide rod (12), the auxiliary cylinder (11) is installed in the right side of main cylinder (10), the guide rod (12) is movably installed in the main cylinder (10), the guide rod (12) extends to the auxiliary cylinder (11), the guide rod (12) is installed with piston (20) for sliding with the inner wall of main cylinder (10); Clamping assembly, clamping assembly is used for the assembly between guide rod (12) and piston (20); Clamping assembly contains card slot (21), first card key (22), second card key (201) and third card key (202), the card slot (21) is respectively arranged in the front end, rear end and middle end of piston (20), the middle end card slot (21) is in the middle between the front end card slot (21) and rear end card slot (21), the card slot (21) of front end, rear end and middle end is respectively used to cooperate second card key (201), first card key (22) and third card key (202), the outer wall of guide rod (12) is correspondingly provided with front end, rear end and middle end card slot (21).

2. The gapless viscous damper of claim 1, wherein: Both ends of the main cylinder (10) are provided with guide sleeve (23), one side of the left guide sleeve (23) is provided with gland (26), the guide sleeve (23) is filled with silicone oil (40).

3. The gapless viscous damper of claim 2, wherein: The dust cover (27) is installed on one side of the gland (26), and the compression nut (28) is installed on the left side of the guide rod (12).

4. The gapless viscous damper of claim 2, wherein: The guide sleeve (23) is provided with a gas guide hole (24), and one end of the gas guide hole (24) is provided with a screw (25).

5. The gapless viscous damper of claim 1, wherein: The connecting bolt (13) is installed on one side of the compression nut (28).

6. The gapless viscous damper of claim 5, wherein: The assembly end contains fixed column (14), loose flange (15), spherical bearing (16) and connecting plate (30), the fixed column (14) is arranged on one side of the connecting bolt (13) and the compression nut (28), one end of the fixed column (14) is provided with spherical bearing (16), the fixed column (14) is assembled with loose flange (15) through spherical bearing (16), and the loose flange (15) is fixedly installed on the connecting plate (30) through bolts.

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