Active lubrication pure electric four-gear helical tooth gearbox with front auxiliary box

By introducing an auxiliary gearbox structure and helical gear design into the heavy-duty truck transmission, the problems of large space occupation and unstable transmission of the power coupling mechanism have been solved, achieving a reasonable layout of the transmission and reducing noise, thereby improving driving comfort and lubrication efficiency.

CN224187983UActive Publication Date: 2026-05-01SUZHOU LVKON TRANSMISSION TECH CO LTD
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Patent Information

Application Number
CN202521054325.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-27
Publication Date
2026-05-01
Estimated Expiration
2035-05-27

AI Technical Summary

Technical Problem

Existing heavy-duty truck transmissions, when powered by dual motors, have a power coupling mechanism that occupies a large space in the main gearbox, resulting in a compact arrangement of the drive shaft and mechanism, poor transmission smoothness, high noise, and reduced driving comfort.

Method used

Design an active lubrication pure electric four-speed helical gearbox with a front auxiliary gearbox. The auxiliary gearbox input shaft group and the main gearbox input shaft are coaxially arranged, and the first short intermediate shaft and the second long intermediate shaft are staggered. Helical gears are used instead of spur gears, and all-round lubrication is achieved through an oil pump.

Benefits of technology

The main gearbox mechanism has been rationally arranged, which has improved transmission smoothness and reduced noise, enhanced driving comfort, and improved lubrication efficiency through active lubrication.

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Abstract

The utility model provides an active lubrication pure electric four-gear helical tooth gearbox with a front auxiliary box, which facilitates reasonable and convenient arrangement of a main box mechanism, and is good in transmission stability, low in noise and good in driving and riding comfort. The front auxiliary box comprises an auxiliary box shell, and an auxiliary box input shaft set and the input end of a main box input shaft are arranged in the auxiliary box shell. The main box comprises a main box shell, and an output end of the main box input shaft, an output shaft, a first short intermediate shaft, a second long intermediate shaft and an oil pump are arranged in the main box shell; the front auxiliary box is arranged corresponding to the power input end side of the main box, the auxiliary box input shaft set comprises at least two auxiliary box input shafts, and each auxiliary box input shaft protrudes out of the auxiliary box shell and is used for being externally connected with power input. Each auxiliary box input shaft is connected with an auxiliary box driven gear on the main box input shaft in a meshed mode through an auxiliary box input gear.
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