A leak-free viscous damper

Abstract

This utility model relates to the field of viscous dampers, specifically to a leak-free viscous damper, including a hydraulic cylinder; a pin head installed at the rear end of the hydraulic cylinder for connection, a connecting pin seat hinged inside the pin head, a piston rod slidably connected inside the hydraulic cylinder, a piston head provided outside the piston rod, and a first bushing sleeved on the front section. This leak-free viscous damper, through the arrangement of a first sealing assembly and a second sealing assembly, can prevent leakage. An installation ring is provided between the piston rod and the second bushing, and a sealing element is provided inside the installation ring to enhance the sealing effect between the piston rod and the second bushing. When the connecting rod extends and retracts between the hydraulic cylinder, the metal sealing ring inside the collar and the stationary ring adhere to the outside of the connecting rod, thereby enhancing the sealing effect during the extension and retraction of the connecting rod. Through these two sets of sealing structures, leakage of the viscous damper is prevented.

Description

Technical Field

[0001] This utility model relates to the field of viscous dampers, specifically to a leak-free viscous damper. Background Technology

[0002] Viscous dampers: Based on the principle of fluid motion, especially the throttling resistance generated when fluid passes through a throttling orifice, they are dampers whose speed is related to piston motion. They are widely used in high-rise buildings, bridges, seismic retrofitting of building structures, seismic resistance of industrial pipelines and equipment, and military applications.

[0003] Existing viscous dampers rely on internal media (such as silicone oil and hydraulic oil) that gradually age over long-term use, leading to performance degradation. This aging can cause unstable damping force and even oil leaks, affecting the damper's normal operation. Furthermore, existing viscous dampers lack leak-free structures, making them prone to leakage with prolonged use. Leaks reduce the amount of internal media, impacting damping effectiveness and energy dissipation capacity. This can result in decreased vibration reduction and shock absorption performance, preventing the damper from achieving its intended effects.

[0004] Therefore, it is necessary to invent a leak-free viscous damper to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a leak-free viscous damper. An installation ring is provided between the piston rod and the second bushing, and a sealing element is installed inside the installation ring to enhance the sealing effect between the piston rod and the second bushing. During the telescopic movement of the connecting rod and the cylinder, a metal sealing ring inside the collar and a stationary ring adhere to the outside of the connecting rod, thereby enhancing the sealing effect during the telescopic process. Through these two sets of sealing structures, leakage in the viscous damper is prevented. This addresses the problem mentioned in the background art where the internal medium of existing viscous dampers gradually ages over long-term use, leading to performance degradation. Medium aging can cause unstable damping force and even oil leakage, affecting the normal operation of the damper. Existing viscous dampers lack a leak-free structure, making them prone to leakage over long-term use. Furthermore, leakage reduces the amount of internal medium, affecting its damping effect and energy dissipation capacity. This can lead to a decline in the damper's vibration reduction and shock absorption performance, failing to achieve the expected results.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-free viscous damper, including a hydraulic cylinder; A pin head is installed at the rear end of the hydraulic cylinder for connection. A connecting pin seat is hinged inside the pin head. A piston rod is slidably connected inside the hydraulic cylinder. A piston head is provided on the outside of the piston rod. A first bushing is sleeved on the front section of the piston rod. The first sealing assembly is sleeved on the outside right side of the piston rod. The first sealing assembly includes a second bushing and a sealing ring. The second bushing is slidably connected inside the cylinder. A sealing element is sleeved on the outside of the second bushing. A connecting rod is slidably connected inside the cylinder. The second sealing assembly is threaded onto the outside of the cylinder and is used to seal between the connecting rod and the cylinder. The second sealing assembly includes a collar, a metal sealing ring, and a stationary ring.

[0007] Preferably, the front side of the second bushing is threaded with a mounting ring, the upper and lower sides of the mounting ring are threaded with first bolts, and a sealing ring is embedded inside the mounting ring.

[0008] Preferably, the rear side of the sealing ring has an abutment ring that limits the inner part of the mounting ring, and the mounting ring is threadedly connected to the second bushing.

[0009] Preferably, the collar is threaded to the outside of the cylinder, and the metal sealing ring and the stationary ring are embedded inside the collar.

[0010] Preferably, a first limiting ring is provided between the metal sealing ring and the stationary ring, and a second limiting ring is provided on the rear side of the stationary ring.

[0011] Preferably, a cleaning block is threadedly connected to the rear side of the collar, and a second bolt is threaded through the upper and lower sides of the cleaning block.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention, through the arrangement of a first sealing component and a second sealing component, can prevent leakage. An installation ring is provided between the piston rod and the second bushing, and a sealing element is provided inside the installation ring to enhance the sealing effect between the piston rod and the second bushing. When the connecting rod and the cylinder move telescopically, the metal sealing ring inside the collar and the stationary ring are attached to the outside of the connecting rod, thereby enhancing the sealing effect of the connecting rod during telescopic movement. Through the two sets of sealing structures, leakage of the viscous damper is prevented. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the hydraulic cylinder of this utility model; Figure 3 This is a schematic diagram of the linkage structure of this utility model; Figure 4 This is a schematic diagram of the first sealing component of this utility model; Figure 5 This is a schematic diagram of the second sealing component of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Hydraulic cylinder; 2. Pin head; 3. Connecting pin seat; 4. Piston rod; 5. Piston head; 6. First bushing; 7. First sealing assembly; 701. Second bushing; 702. Seal; 703. Mounting ring; 704. First bolt; 705. Sealing ring; 706. Contact ring; 8. Connecting rod; 9. Second sealing assembly; 901. Collar; 902. Metal sealing ring; 903. First limiting ring; 904. Stationary ring; 905. Second limiting ring; 906. Cleaning block; 907. Second bolt. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1-5 A leak-free viscous damper is shown, comprising a hydraulic cylinder 1; Pin 2 is installed at the rear end of cylinder 1 for connection. A connecting pin seat 3 is hinged inside pin 2. A piston rod 4 is slidably connected inside cylinder 1. A piston head 5 is provided on the outside of piston rod 4. A first bushing 6 is sleeved on the front section of piston rod 4. The first sealing assembly 7 is sleeved on the outside right side of the piston rod 4. The first sealing assembly 7 includes a second bushing 701 and a sealing ring 705. The second bushing 701 is slidably connected inside the oil cylinder 1. A sealing element 702 is sleeved on the outside of the second bushing 701. A connecting rod 8 is slidably connected inside the oil cylinder 1. The second sealing assembly 9 is threaded onto the outside of the cylinder 1 and is used to seal between the connecting rod 8 and the cylinder 1. The second sealing assembly 9 includes a collar 901, a metal sealing ring 902, and a stationary ring 904. An installation ring 703 is provided between the piston rod 4 and the second bushing 701, and a sealing element 702 is provided inside the installation ring 703 to enhance the sealing effect between the piston rod 4 and the second bushing 701. When the connecting rod 8 moves telescopically between the cylinder 1 and the cylinder 1, the metal sealing ring 902 inside the collar 901 and the stationary ring 904 are attached to the outside of the connecting rod 8, thereby enhancing the sealing effect of the connecting rod 8 during telescopic movement. Through the two sets of sealing structures, leakage of the viscous damper is avoided.

[0018] like Figure 4 As shown, the front side of the second bushing 701 is threaded with a mounting ring 703. The upper and lower sides of the mounting ring 703 are threaded with first bolts 704. A sealing ring 705 is embedded inside the mounting ring 703. The mounting ring 703 and the second bushing 701 are connected by threads. The sealing ring 705 inside the mounting ring 703 is attached to the outside of the piston rod 4, thereby enhancing the sealing between the piston rod 4 and the mounting ring 703.

[0019] like Figure 4 As shown, the rear side of the sealing ring 705 is limited by an abutment ring 706 inside the mounting ring 703. The mounting ring 703 is threadedly connected to the second bushing 701. The sealing ring 705 is inside the mounting ring 703. The abutment ring 706 on the rear side of the mounting ring 703 limits the sealing ring 705 and strengthens its firmness.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the collar 901 is threaded to the outside of the cylinder 1, and the metal sealing ring 902 and the stationary ring 904 are embedded inside the collar 901. When the connecting rod 8 moves telescopically between the cylinder 1 and the cylinder 1, the outside of the connecting rod 8 is pressed against the metal sealing ring 902 and the stationary ring 904, thereby enhancing the sealing between the connecting rod 8 and the cylinder 1.

[0021] like Figure 5 As shown, a first limiting ring 903 is provided between the metal sealing ring 902 and the stationary ring 904, and a second limiting ring 905 is provided on the rear side of the stationary ring 904. The presence of the first limiting ring 903 on the rear side of the metal sealing ring 902 and the second limiting ring 905 on the rear side of the stationary ring 904 enhances the firmness of the metal sealing ring 902 and the stationary ring 904 within the collar 901.

[0022] like Figure 5As shown, a cleaning block 906 is threadedly connected to the rear side of the collar 901. The upper and lower sides of the cleaning block 906 are threaded with second bolts 907. The cleaning block 906 on the rear side of the collar 901 can remove dust and impurities from the connecting rod 8, preventing them from entering the collar 901 and causing wear between the metal sealing ring 902 and the stationary ring 904, thus affecting the sealing effect.

[0023] The working principle of this practical application is as follows: First, the metal sealing ring 902 is embedded inside the collar 901. Then, the first limiting ring 903 is installed behind the metal sealing ring 902. Next, the stationary ring 904 is embedded behind the first limiting ring 903. Then, the second limiting ring 905 is installed behind the stationary ring 904. This is to fix the metal sealing ring 902 to the collar. Finally, the cleaning block 906 is clamped behind the collar 901. The second bolt 907 is threaded through the upper and lower sides of the cleaning block 906. Then, the entire collar 901 is fitted over the collar 901. The rear side of the hydraulic cylinder 1 is then tightened. Finally, the front end of the hydraulic cylinder 1 is connected to the rear end of the connecting rod 8 and the connecting pin. The seats 3 are hinged together and then installed at the location where vibration damping is required. During the vibration damping process, when the piston rod 4 moves telescopically within the second bushing 701, the sealing effect between the piston rod 4 and the second bushing 701 is enhanced by the sealing element 702 inside the mounting ring 703, preventing leakage. At the same time, when the connecting rod 8 moves telescopically between the cylinder 1 and the oil cylinder 1, the metal sealing ring 902 inside the collar 901 and the stationary ring 904 are attached to the outside of the connecting rod 8, thereby enhancing the sealing effect of the connecting rod 8 during telescopic movement. Through the two sets of sealing structures, leakage of the viscous damper is prevented. In this way, the use of the leak-free viscous damper is completed.

[0024] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A leak-free viscous damper, characterized in that: Including the hydraulic cylinder (1); A pin (2) is installed at the rear end of the cylinder (1) for connection. A connecting pin seat (3) is hinged inside the pin (2). A piston rod (4) is slidably connected inside the cylinder (1). A piston head (5) is provided on the outside of the piston rod (4). A first bushing (6) is sleeved on the front section of the piston rod (4). The first sealing assembly (7) is sleeved on the right side outside the piston rod (4). The first sealing assembly (7) includes a second bushing (701) and a sealing ring (705). The second bushing (701) is slidably connected inside the oil cylinder (1). A sealing element (702) is sleeved on the outside of the second bushing (701). A connecting rod (8) is slidably connected inside the oil cylinder (1). The second sealing assembly (9) is threaded onto the outside of the cylinder (1) and is used to seal between the connecting rod (8) and the cylinder (1). The second sealing assembly (9) includes a collar (901), a metal sealing ring (902), and a stationary ring (904).

2. The leak-free viscous damper according to claim 1, characterized in that: The front side of the second bushing (701) is threaded with a mounting ring (703), and the upper and lower sides of the mounting ring (703) are threaded with a first bolt (704). A sealing ring (705) is embedded inside the mounting ring (703).

3. The leak-free viscous damper according to claim 1, characterized in that: The rear side of the sealing ring (705) is limited by an abutment ring (706) inside the mounting ring (703), and the mounting ring (703) is threadedly connected to the second bushing (701).

4. The leak-free viscous damper according to claim 1, characterized in that: The collar (901) is threaded to the outside of the cylinder (1), and the metal sealing ring (902) and the stationary ring (904) are embedded inside the collar (901).

5. A leak-free viscous damper according to claim 1, characterized in that: A first limiting ring (903) is provided between the metal sealing ring (902) and the stationary ring (904), and a second limiting ring (905) is provided on the rear side of the stationary ring (904).

6. A leak-free viscous damper according to claim 1, characterized in that: The rear side of the collar (901) is threaded with a cleaning block (906), and the upper and lower sides of the cleaning block (906) are threaded with second bolts (907).

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