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| Failure Mechanism of Connecting Sleeve of a High-Speed Marine Gearbox Oil Pump |
| Received:September 09, 2020 Revised:September 28, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.11.019 |
| KeyWord:marine gearbox high-speed operation oil pump connecting sleeve failure mechanism peristalsis wear |
| Author | Institution |
| WANG Bin |
Military Representative Bureau of Naval Equipment Department in Guangzhou, Guangzhou , China |
| LIU Yan-long |
Military Representative Bureau of Naval Equipment Department in Guangzhou, Guangzhou , China |
| FENG Jian |
Chongqing Gearbox Co.Ltd., Chongqing , China |
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| Abstract: |
| The work aims to master the micro-operation mechanism of the connecting sleeve of the working oil pump and increase the reliability of the gearbox. The structure of the connecting sleeve of the working oil pump was analyzed from the perspective of gearbox system. The failure mechanism of gearbox dynamic operation and micro-wear of connecting sleeve were studied in depth. Through analysis and verification, the optimal clearance range of the machine pump end key was 0.05 mm~ 1.5 mm. After long-term operation, the end face will have wear, which can be alleviated and controlled by measures such as increasing the hardness and lubrication of the end face key and reducing the shafting disturbance of the gear box. Due to the structural characteristics of the gearbox, the lifetime of the end face key was within 15,000 hours. Based on the above analysis, the connection way between the connecting sleeve and the oil pump in the gear box was optimized, and the involute spline was adopted at one end of the oil pump, which can effectively reduce its wear degree. The failure of high-speed marine gearbox oil pump connector is caused by the end key clearance, end key crawling wear of dynamic motion, shaft disturbance of gearbox etc. Reasonable design of end key tolerance, increasing the the end key hardness and lubrication, and reducing disturbance or optimizing the involute spline and other measures can be taken to prevent it. |
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