一种液压齿轮泵滑动轴承密封结构
By designing a limiting insertion hole structure for the lubricating oil storage box and oil injection pipe in the hydraulic gear pump, the leakage problem of the sealing structure under vibration environment is solved, achieving higher sealing performance and equipment stability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI RUNCHENG ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-10-29
- Publication Date
- 2026-07-17
AI Technical Summary
The existing sealing structure of hydraulic gear pumps is prone to leakage under vibration, resulting in hydraulic oil loss and impurity entry, which affects equipment life and operational stability.
A sealing structure including a lubricating oil storage box, an oil injection pipe, a limiting socket, and a moving component is adopted. Through the cooperation of a rack and a L-shaped connecting rod, the sealing cover is automatically limited, thereby enhancing the sealing performance.
It effectively prevents lubricating oil leakage, avoids the entry of external impurities, improves the operational stability and service life of the equipment, and reduces maintenance costs.
Smart Images
Figure CN224516467U_ABST
Abstract
Claims
1. A hydraulic gear pump sliding bearing seal structure, characterized by, include: The bearing housing (1) and bearing cover (2) are connected by bolts. Both the bearing housing (1) and bearing cover (2) are provided with bearing bushes (3), and both bearing bushes (3) are provided with the same shaft body (4). Lubricating oil storage box (5), the lubricating oil storage box (5) is fixedly installed on the top surface of bearing cover (2), the bearing cover (2) is fixedly installed with lubricating oil discharge pipe (19), the top end of the lubricating oil discharge pipe (19) is fixedly connected to the bottom surface of the lubricating oil storage box (5), and the lubricating oil storage box (5) is connected to the lubricating oil discharge pipe (19). Top box (17), the top box (17) is fixedly installed on the top surface of the lubricating oil storage box (5), the top surface of the lubricating oil storage box (5) is fixedly installed with an oil injection pipe (6), the oil injection pipe (6) is connected to the lubricating oil storage box (5), the top end of the oil injection pipe (6) passes through the top box (17) and extends to the outside of the lubricating oil storage box (5), and a sealing cap (7) is movably sleeved inside the oil injection pipe (6). Two second limiting holes (10) are provided on both sides of the oil injection pipe (6), and two first limiting holes (9) are provided on both sides of the sealing cover (7). The two first limiting holes (9) are respectively connected to the two second limiting holes (10). Two limiting rods (14) are respectively movably sleeved in two first limiting holes (9) and two second limiting holes (10); A movable component is disposed on the lubricating oil storage box (5) and is used to move the two limit rods (14).
2. A hydraulic gear pump sliding bearing seal structure as defined in claim 1, wherein The moving component includes two racks (12), which are symmetrically slidably mounted on the top surface of the lubricating oil storage box (5). A movable ring (15) is rotatably mounted on the outer wall of the oil injection pipe (6). Multiple tooth blocks are fixedly mounted on the outer wall of the movable ring (15). The multiple tooth blocks mesh with the two racks (12) respectively. An L-shaped connecting rod (11) is fixedly mounted on the top surface of each of the two racks (12). One side of each of the two L-shaped connecting rods (11) is fixedly connected to one end of each of the two limiting rods (14).
3. A hydraulic gear pump sliding bearing seal structure as defined in claim 2 wherein, The top box (17) is threadedly connected to a lead screw (13) on one side, and one end of the lead screw (13) is rotatably connected to one end of one of the racks (12).
4. A hydraulic gear pump sliding bearing seal structure according to claim 3, wherein An adjusting block (16) is fixedly installed at one end of the lead screw (13) located outside the top box (17), and the surface of the adjusting block (16) is provided with anti-slip texture.
5. A hydraulic gear pump sliding bearing seal structure as defined in claim 1 wherein, The sealing cover (7) is provided with a sealing ring (8) on its surface, and the two limiting rods (14) are provided with sealing strips (20) on their surfaces.
6. A hydraulic gear pump sliding bearing seal structure as defined in claim 1 wherein, Multiple mounting plates (21) are fixedly installed on both sides of the bearing housing (1), and mounting holes (18) are opened on the multiple mounting plates (21).
7. A hydraulic gear pump sliding bearing seal structure as defined in claim 1 wherein, A solenoid valve is provided on the lubricating oil discharge pipe (19).