一种动车组油压减振器活塞的阻尼结构
By installing an elastic telescopic component and a damping valve plate structure connected to a movable column at the damping hole of the hydraulic damper piston in the EMU, the problem of easy damage to the damping valve plate is solved, stable and reliable movement and reset are achieved, and the service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 王金祝
- Filing Date
- 2025-06-13
- Publication Date
- 2026-07-17
AI Technical Summary
The damping valve plates of the pistons in existing high-speed train hydraulic shock absorbers are prone to damage during frequent movement, have a short service life, and are unstable in resetting, which affects the shock absorption effect.
First and second damping valve plates are respectively installed at the first and second damping holes of the piston, and the valve plates are stably moved and reset by the first and second elastic telescopic components. The movable column and bolt connection structure are adopted to improve stability and facilitate maintenance.
This improves the stability and service life of the damping valve plate, reduces the risk of damage, and enhances the practicality and vibration reduction effect of the device.
Smart Images
Figure CN224515777U_ABST
Abstract
Claims
1. A damping structure for a piston of a hydraulic shock absorber in a high-speed train, characterized in that, include: Piston (1), with a first damping hole (3) provided at one end of the top side of the piston (1), and a second damping hole (4) provided at one end of the bottom side of the piston (1) relative to the first damping hole (3). The first damping valve plate (5) is located at the bottom of the piston (1) near the bottom of the first damping hole (3), and a first elastic telescopic component is provided between the first damping valve plate (5) and the first damping hole (3). The second damping valve plate (6) is located on the top of the piston (1) near the second damping hole (4), and a second elastic telescopic component is provided between the second damping valve plate (6) and the second damping hole (4).
2. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 1, characterized in that: The first elastic telescopic component includes multiple sets of first sliding cavities (8) arranged in a ring array at the bottom of the piston (1) with the first damping hole (3) as the center. The top of the interior of each of the multiple first sliding cavities (8) is fixed with a first spring (9). The bottom end of the first spring (9) is connected to a first movable column (10). The bottom end of the first movable column (10) extends to the outside of the first sliding cavity (8) and is fixedly connected to the end of the first damping valve plate (5).
3. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 2, characterized in that: The second elastic telescopic assembly includes multiple sets of second sliding cavities (11) arranged in a ring array on the top of the piston (1) with the second damping hole (4) as the center. The bottom of each of the multiple second sliding cavities (11) is fixed with a second spring (12). The top of the second spring (12) is connected to a second movable column (13). The bottom of the second movable column (13) extends to the outside of the second sliding cavity (11) and is fixedly connected to the end of the second damping valve plate (6).
4. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 1, characterized in that: The piston (1) has a piston rod hole (2) in the middle of its side wall.
5. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 1, characterized in that: The piston (1) has two annular grooves symmetrically arranged on its side wall, and a rubber ring (7) is embedded in the annular groove.
6. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 3, characterized in that: The ends of the first damping valve plate (5) and the second damping valve plate (6) are provided with multiple through holes (14), and fastening bolts (15) are connected through the through holes (14). The ends of the first movable column (10) and the second movable column (13) are provided with threaded holes (17) that match the fastening bolts (15).
7. The damping structure of a piston of an oil hydraulic damper for a motor train unit according to claim 6, characterized in that: A gasket (16) is provided between the first damping valve plate (5) and the second damping valve plate (6) and the fastening bolt (15), and multiple arc-shaped grooves are provided on the sidewalls of the first damping valve plate (5) and the second damping valve plate (6).