A 12-speed double countershaft high-torque full synchronizer transmission

Abstract

The invention relates to a 12-gear double-intermediate shaft large-torque full synchronizer transmission which is composed of a 6-gear main transmission and a 2-gear auxiliary transmission; a flow guide plate used for collecting lubricating oil mist inside the transmission to perform forced lubrication on gears is arranged on an upper cover, above a gear meshing position, of the main transmission, an obliquely-arranged lubricating oil groove is formed in the flow guide plate, and an oil hole is formed in the bottom surface of the oil groove; a lubricating oil pump used for pumping out lubricating oil is arranged in the main transmission, the pumped lubricating oil is introduced into the auxiliary transmission through a lubricating oil pipe after being subjected to externally forced cooling, an oil hole is formed in the tail part of the lubricating oil pipe, and the cooled lubricating oil is sprayed onto a shaft gear of an auxiliary box intermediate shaft through the oil hole for forced lubrication. Each of the main transmission and the auxiliary transmission of the 12-gear double-intermediate shaft large-torque full synchronizer transmission provided by the invention is of a double-intermediate shaft fixed shaft type structure and is provided with a synchronizer; meanwhile, a forced lubrication and forced cooling system is additionally arranged, and the problems of insufficient strength of part of gears, poor lubrication, poor auxiliary box synchronizer performance and quicker temperature rise are solved.

Description

technical field [0001] The invention relates to the field of transmission manufacturing, in particular to a 12-speed double intermediate shaft high-torque full synchronizer transmission. Background technique [0002] With the rapid development of my country's economy, the improvement of road conditions and the continuous increase of heavy-duty truck engine power and torque, there is an urgent need for high-torque fully synchronized transmissions in the market. Due to some difficulties in the design of high-torque transmissions, there is currently no mature 12-speed fully synchronized transmission with a torque of more than 2400Nm in China. [0003] For the high-torque full-synchronized transmissions with an input torque of 2400Nm and above in the traditional technology, there is a problem that the transition time from high-gear to low-gear of the auxiliary box is too long. The main reason is that the synchronous inertia of the high-torque full-synchronized Insufficient capa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the above-mentioned prior art by providing a 12-speed double countershaft high-torque full synchronizer transmission to solve the problems of insufficient strength of transmission gears, poor lubrication, poor performance of auxiliary box synchronizers and rapid temperature rise. question

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