Self-lubricating planet gear transmission sub-gearbox

Abstract

The invention discloses a self-lubricating planet gear transmission sub-gearbox. The self-lubricating planet gear transmission sub-gearbox comprises a planetary structure arranged in a transmission case and a pumped oil spraying device. The self-lubricating planet gear transmission sub-gearbox is characterized in that the pumped oil spraying device comprises a pump case connected with the transmission case and a rotating shaft which is positioned in the pump case and is connected with an intermediate shaft of a transmission; an oil suction port of the pumped oil spraying device is positioned at the bottom of the transmission case; and an oil nozzle is positioned on the lower edge side of the planetary structure and faces an engaged area of a planet gear of the planetary structure and a biggear ring. The lubrication of the planetary structure of a rear sub-gearbox is enhanced by using the pumped oil spraying device arranged at the rear end of the intermediate shaft, so that the workingreliability of the planetary structure is ensured. By use of the pumped oil spraying device arranged at the rear end of the intermediate shaft, the lubrication of the planetary structure of the rearsub-gearbox is enhanced, the oil-level height of a transmission assembly is reduced, and the problems that as the oil-level height is improved, the churning loss of the transmission is increased, further the temperature of the transmission is raised, early failure of an oil product is caused, the transmission efficiency is low and the like are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of automobile transmission, and in particular relates to a self-lubricating planetary gear transmission auxiliary case, which is suitable for medium and light multi-speed transmissions whose auxiliary case adopts a planetary structure and mainly relies on splash lubrication. Background technique [0002] With the improvement of the power, economy and reliability requirements of commercial vehicles, the transmissions of medium and light commercial vehicles have gradually changed from the five-speed and six-speed transmissions of the traditional integral structure to the eighth and nine-speed transmissions of the combined structure (main box + auxiliary box structure). gear transmission. At the same time, higher requirements are put forward for gearbox reliability and transmission efficiency indicators. [0003] In order to improve the reliability of the transmission, the auxiliary case of the medium and ligh...

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Problems solved by technology

[0005] In view of the problems existing in the background technology, the purpose of the present invention is to provide a simple structure, low cost, and effectively solve the problem of increased transmission oil churning loss caused by the increase of the oil level, the temperature rise of the transmission, and the early failure of the oil. , low transmission efficiency and many other problems of self-lubricating planetary gear transmission auxiliary case

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