Analysis of High Speed Gearbox Oil Injection Lubrication Under Negative Pressure Based on the CFD
In order to improve the transmission efficiency of the gear transmission system and the service life of the gear pair, it is necessary to study the spread of the lubricating oil on the tooth surface in the high-speed gearbox and explore the best injection lubrication parameters. Based on the theory...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Transmission
2024-05-01
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| Series: | Jixie chuandong |
| Subjects: | |
| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2024.05.003 |
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| Summary: | In order to improve the transmission efficiency of the gear transmission system and the service life of the gear pair, it is necessary to study the spread of the lubricating oil on the tooth surface in the high-speed gearbox and explore the best injection lubrication parameters. Based on the theory of computational fluid dynamics（CFD), the finite element simulation model of high linear speed gear oil injection lubrication under negative pressure is established. The collision evolution process between oil and high-speed gear tooth surface under negative pressure is analyzed, and the movement of the oil at different times and the spread on the tooth surface are obtained. The influence of different gearbox pressures and injection parameters on the gear surface lubrication effect at high speed is further investigated, and the optimal injection parameters at the 0.5 atmospheric pressure are obtained. The results show that when the nozzle diameter is 12 mm, the splash effect is not obvious after the impact between the oil and high-speed gear surface. A certain negative pressure can improve the lubrication effect of the gear surface and reduce the power loss of the gear pair. At the 0.5 atmospheric pressure, when the injection angle is 50°, the injection distance is close, the injection speed is large, and the tooth surface lubrication effect is the best. |
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| ISSN: | 1004-2539 |