Double-spring viscous fluid damper

Abstract

The utility model relates to the technical field of dampers, and discloses a double-spring viscous fluid damper, which comprises a cylinder body, a piston, a piston rod and a piston rod, the damper piston is arranged at a cylinder liner of the cylinder body; the piston rod is arranged on the damper piston and penetrates through the cylinder body; the resonance structure is arranged at one end of the piston rod and arranged on the cylinder body, and the resonance structure is used for improving the clamping force of resonance vibration reduction; the second connector is arranged at the end, away from the piston rod, of the cylinder body, external threads are formed in the outer surface of the cylinder body, the outer surface of the external threads is movably connected with the resonance structure, the resonance structure comprises a first connector, and the first connector is fixedly connected with one end of the piston rod. According to the utility model, the clamping force of resonance vibration reduction can be improved, and the vibration reduction control effect can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a double-spring viscous fluid damper. Background Technique

[0002] A viscous fluid damper usually consists of a cylinder body, a guide rod, a piston with damping holes, a viscous fluid, and a seal. The viscous fluid damper is usually installed between the layers of a frame structure. When the structure vibrates under the action of an external force, relative movement occurs between the piston and the cylinder body of the viscous fluid damper through the guide rod. The viscous fluid flows between the two sides of the piston through the damping holes, thereby generating a damping force.

[0003] The existing patent for an adjustable viscous fluid damper, with the publication number CN219711939U, injects viscous fluid into the two chambers of the inner cylinder of the cylinder through an injection pipe in the embodiment, so that the viscous fluid fills the inner cylinder of the cylinder, making the movement of the damper piston in the inner cylinder of the cylinder blocked, thus achieving the viscous fluid damping effect. When injecting the viscous fluid, it can be injected into the two chambers successively to change the volume of the two chambers. Since the total volume of the inner cylinder of the cylinder remains unchanged, when the volume of the left chamber increases, the volume of the right chamber will decrease, and then the length of the piston rod in the inner cylinder of the cylinder can be adjusted, making it more applicable.

[0004] Although the above device can adjust the length of the piston rod in the inner cylinder of the cylinder, the inventor found in the actual application process that the damping effect of the above viscous fluid damper is poor. Therefore, we propose a double-spring viscous fluid damper. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a double-spring viscous fluid damper, which has the advantages of being able to improve the clamping force of resonance vibration damping and enhance the damping control effect, and solves the problem of poor damping effect of the viscous fluid damper.

[0007] (2) Technical Solutions

[0008] To achieve the above purpose of being able to improve the clamping force of resonance vibration damping and enhance the damping control effect, the utility model provides the following technical solutions: A double-spring viscous fluid damper, comprising: a cylinder body, in which a viscous fluid is provided in the inner cylinder of the cylinder body;

[0009] A damper piston, which is arranged at the inner cylinder of the cylinder body;

[0010] A piston rod, which is arranged on the damper piston and penetrates through the cylinder body;

[0011] A resonance structure is provided at one end of the piston rod and on the cylinder block. The resonance structure is used to increase the clamping force of resonance vibration damping.

[0012] A second adapter is provided at the end of the cylinder block away from the piston rod.

[0013] As a preferred technical solution of the present utility model, an external thread is provided on the outer surface of the cylinder block. The outer surface of the external thread is movably connected to the resonance structure for easy installation of the resonance structure.

[0014] As a preferred technical solution of the present utility model, the resonance structure includes a first adapter. The first adapter is fixedly connected to one end of the piston rod. An inner spring is fixedly installed on one side of the first adapter, and an outer spring is fixedly installed on one side of the first adapter. The outer spring covers the inner spring. One end of the inner spring away from the first adapter is provided with a pressing cover. The inner cavity of the pressing cover is threadedly connected to the external thread, and the pressing cover is movably connected to one end of the outer spring away from the first adapter. In practical applications, when subjected to external vibration or impact, the viscous fluid in the cylinder will generate damping and consume part of the mechanical energy. At the same time, due to the interaction between the damper piston driven by the vibration force and the inner spring and the outer spring, a vibration displacement with the same vibration frequency is generated. The inner spring and the outer spring generate reverse resistance according to the characteristics of the spring stiffness, resulting in a vibration phase difference in the structure to achieve resonance at a specific frequency. During resonance, the viscous fluid in the cylinder will absorb and dissipate the vibration energy to play a role in shock absorption, thereby increasing the clamping force of resonance vibration damping and enhancing the damping control effect.

[0015] As a preferred technical solution of the present utility model, a retaining ring is fixedly installed on the first adapter. The outer surface of the retaining ring is movably sleeved with the inner spring for easy sleeving of the inner spring on the outer surface of the retaining ring.

[0016] As a preferred technical solution of the present utility model, a first groove is provided inside the first adapter on the same side as the retaining ring. The inner cavity wall of the first groove is fixedly connected to one end of the outer spring away from the pressing cover for easy fixing of one end of the outer spring away from the pressing cover on the first adapter.

[0017] As a preferred technical solution of the present utility model, a socket ring is fixedly installed on the pressing cover. The outer surface of the socket ring is movably sleeved with the inner spring for easy sleeving of the inner spring on the outer surface of the socket ring.

[0018] As a preferred technical solution of the present utility model, a second groove is provided inside the pressing cover and on the same side as the socket ring, and the inner cavity wall of the second groove is movably connected to the end of the outer spring away from the first connection head, so that the end of the outer spring away from the first connection head is in contact connection with the pressing cover.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present utility model provides a double-spring viscous fluid damper, which has the following

[0021] Beneficial effects:

[0022] For this double-spring viscous fluid damper, when it is subjected to external vibration or impact, the viscous fluid in the cylinder will generate damping and consume part of the mechanical energy. At the same time, due to the interaction between the damper piston driven by the vibration force and the inner spring and the outer spring, a vibration displacement with the same frequency as the vibration is generated. The inner spring and the outer spring generate reverse resistance according to the characteristics of the spring stiffness, so that the structure generates a vibration phase difference to achieve resonance at a certain specific frequency. When resonance occurs, the viscous fluid in the cylinder will absorb and dissipate the vibration energy to play a role in shock absorption, thereby improving the clamping force of resonance vibration reduction and enhancing the vibration reduction control effect. Description of the drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present utility model with the inner spring and the outer spring removed;

[0025] Figure 3 It is a schematic diagram of the connection between the piston rod and the first connection head in the overall structure of the present utility model.

[0026] In the figure: 1, cylinder body; 11, external thread; 2, damper piston; 3, piston rod; 41, first connection head; 411, retaining ring; 412, first groove; 42, inner spring; 43, outer spring; 44, pressing cover; 441, socket ring; 442, second groove; 5, second connection head. Specific embodiments

[0027] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings of the specification.

[0028] Referring to Figures 1-3 , a double-spring viscous fluid damper is provided, including: a cylinder body 1, and a viscous fluid is provided in the inner cylinder of the cylinder body 1;

[0029] The damper piston 2 is arranged at the inner cylinder of the cylinder block 1;

[0030] The piston rod 3 is arranged on the damper piston 2 and penetrates through the cylinder block 1;

[0031] The resonance structure is arranged at one end of the piston rod 3 and on the cylinder block 1. The resonance structure is used to increase the clamping force of resonance vibration damping;

[0032] The second adapter 5 is arranged at one end of the cylinder block 1 away from the piston rod 3.

[0033] External threads 11 are provided on the outer surface of the cylinder block 1, and the outer surface of the external threads 11 is movably connected to the resonance structure.

[0034] The resonance structure includes a first adapter 41. The first adapter 41 is fixedly connected to one end of the piston rod 3. An inner spring 42 is fixedly installed on one side of the first adapter 41. An outer spring 43 is fixedly installed on one side of the first adapter 41. The outer spring 43 covers the inner spring 42. A pressure cover 44 is provided at one end of the inner spring 42 away from the first adapter 41. The inner cavity of the pressure cover 44 is threadedly connected to the external threads 11. The pressure cover 44 is movably connected to one end of the outer spring 43 away from the first adapter 41.

[0035] A retaining ring 411 is fixedly installed on the first adapter 41, and the outer surface of the retaining ring 411 is movably sleeved with the inner spring 42.

[0036] A first groove 412 is provided inside the first adapter 41 and on the same side as the retaining ring 411. The inner cavity wall of the first groove 412 is fixedly connected to one end of the outer spring 43 away from the pressure cover 44.

[0037] A socket ring 441 is fixedly installed on the pressure cover 44, and the outer surface of the socket ring 441 is movably sleeved with the inner spring 42.

[0038] A second groove 442 is provided inside the pressure cover 44 and on the same side as the socket ring 441. The inner cavity wall of the second groove 442 is movably connected to one end of the outer spring 43 away from the first adapter 41.

[0039] In the actual use process, when subjected to external vibration or impact, the viscous fluid in the cylinder block 1 will generate damping, consuming part of the mechanical energy. At the same time, due to the interaction of the damper piston 2 driven by the vibration force with the inner spring 42 and the outer spring 43, a vibration displacement with the same frequency as the vibration is generated. The inner spring 42 and the outer spring 43 generate reverse resistance according to the characteristics of the spring stiffness, causing a vibration phase difference in the structure to achieve resonance at a certain specific frequency. During resonance, the viscous fluid in the cylinder block 1 can absorb and dissipate the vibration energy, playing a role in shock absorption. Thus, the clamping force of resonance vibration damping can be improved, and at the same time, the vibration damping control effect can be enhanced. This device can not only improve the clamping force of resonance vibration damping, but also enhance the vibration damping control effect.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Double-spring viscous fluid damper, characterized in that: Comprising: A cylinder block (1), in which a viscous fluid is provided in the inner cylinder of the cylinder block (1); A damper piston (2), which is arranged at the inner cylinder of the cylinder block (1); A piston rod (3), which is arranged on the damper piston (2) and penetrates through the cylinder block (1); A resonance structure, which is arranged at one end of the piston rod (3) and on the cylinder block (1), and the resonance structure is used to increase the clamping force of resonance vibration damping; A second connector (5), which is arranged at one end of the cylinder block (1) away from the piston rod (3).

2. The double-spring viscous fluid damper according to claim 1, wherein: An external thread (11) is provided on the outer surface of the cylinder block (1), and the outer surface of the external thread (11) is movably connected to the resonance structure.

3. The double-spring viscous fluid damper according to claim 2, characterized in that: The resonance structure includes a first connector (41), which is fixedly connected to one end of the piston rod (3). An inner spring (42) is fixedly installed on one side of the first connector (41), and an outer spring (43) is fixedly installed on one side of the first connector (41). The outer spring (43) covers the inner spring (42). A pressing cover (44) is provided at one end of the inner spring (42) away from the first connector (41). The inner cavity of the pressing cover (44) is threadedly connected to the external thread (11), and the pressing cover (44) is movably connected to one end of the outer spring (43) away from the first connector (41).

4. The double-spring viscous fluid damper according to claim 3, characterized in that: A retaining ring (411) is fixedly installed on the first connector (41), and the outer surface of the retaining ring (411) is movably sleeved with the inner spring (42).

5. The double-spring viscous fluid damper according to claim 4, characterized in that: A first groove (412) is provided inside the first connector (41) on the same side as the retaining ring (411), and the inner cavity wall of the first groove (412) is fixedly connected to one end of the outer spring (43) away from the pressing cover (44).

6. The double-spring viscous fluid damper according to claim 3, wherein: A socket ring (441) is fixedly installed on the pressing cover (44), and the outer surface of the socket ring (441) is movably sleeved with the inner spring (42).

7. The double-spring viscous fluid damper according to claim 6, characterized in that: A second groove (442) is provided inside the pressing cover (44) on the same side as the socket ring (441), and the inner cavity wall of the second groove (442) is movably connected to one end of the outer spring (43) away from the first connector (41).

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