一种防单边磨损的液压油缸活塞

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By using the clearance fit between the cylindrical cavity of the guide shaft and the support shaft, and the dual guiding mechanism of the slide rail and the slider, the problem of unilateral wear of the hydraulic cylinder piston is solved, thereby improving the smoothness of piston movement and service life.

CN224515537UActive Publication Date: 2026-07-17FOSHAN SHUNDE LIRUI MASCH MFG CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: FOSHAN SHUNDE LIRUI MASCH MFG CO LTD
Filing Date: 2025-08-30
Publication Date: 2026-07-17

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Abstract

本实用新型涉及液压油缸活塞技术领域，尤其涉及一种防单边磨损的液压油缸活塞，包括支撑轴，在支撑轴上套设有滑动套，滑动套与支撑轴同轴设置，而在支撑轴上还套设有套管，套管的一端与滑动套的端部固定，且套管与滑动套同轴设置；在支撑轴靠近套管的一端同轴开设有柱形腔体，且在柱形腔体内置有导向轴，导向轴与柱形腔体的内壁间隙配合。本实用新型通过导向轴与支撑轴内的柱形腔体间隙配合，确保滑动套和套管的运动始终沿轴线方向，避免因偏移导致的单侧摩擦，显著减少密封圈和活塞圈的磨损。

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Claims

1. A hydraulic cylinder piston for protection against single-sided wear, characterized in that: Includes a support shaft (1), a sliding sleeve (3) is sleeved on the support shaft (1), the sliding sleeve (3) is coaxially arranged with the support shaft (1), and a sleeve (6) is also sleeved on the support shaft (1), one end of the sleeve (6) is fixed to the end of the sliding sleeve (3), and the sleeve (6) is coaxially arranged with the sliding sleeve (3); A cylindrical cavity (7) is coaxially provided at one end of the support shaft (1) near the sleeve (6), and a guide shaft (8) is built into the cylindrical cavity (7), with the guide shaft (8) and the inner wall of the cylindrical cavity (7) having a clearance fit.

2. A hydraulic cylinder piston with protection against single-sided wear according to claim 1, characterized in that A mounting base (2) is installed at the end of the support shaft (1) away from the sleeve (6).

3. A hydraulic cylinder piston with anti-single wear according to claim 1, characterized in that: A piston sleeve (5) is installed along the outer wall of the sliding sleeve (3).

4. A hydraulic cylinder piston with anti-single wear according to claim 1, characterized in that: Piston rings (4) are installed at both ends of the inner wall of the sliding sleeve (3), and the inner wall of the piston rings (4) abuts against the outer wall of the support shaft (1).

5. A hydraulic cylinder piston with anti-single wear according to claim 1, characterized in that: A strip-shaped slide rail (9) is installed on the inner wall of the sleeve (6). The slide rail (9) is set along the axial direction of the sleeve (6), and a slider (10) is slidably installed on the slide rail (9). The slider (10) is fixed on one end of the support shaft (1) near the guide shaft (8).

6. A hydraulic cylinder piston with anti-single wear according to claim 1, characterized in that: An annular mounting plate (12) is fitted on the end of the sleeve (6) away from the sliding sleeve (3). A sealing ring (13) is installed on the inner wall of the mounting plate (12), and the inner wall of the sealing ring (13) is in close contact with the outer wall of the sleeve (6).

7. A hydraulic cylinder piston with anti-single wear according to claim 1, characterized in that: The end of the sleeve (6) away from the sliding sleeve (3) is fixed to the guide shaft (8) by a connecting seat (11).