Planetary torsion changing and speed changing device

Abstract

The invention discloses a torsion changing and speed changing device of a motor vehicle transmission system. Particularly, the rotation direction of a balance wheel is changed, so that rotation balance wheels has two motion manners of side turning over at the same time, and resistance is generated to limit and change revolution of planetary gears; according to the principle, an inner gear drives the planetary gears to output power, in the process of power transmission, revolution rings borne on the planetary gears are synchronously driven to rotate around the balance wheel at the central position, after the balance wheel rotates, the balance wheel will be like a spinning top to generate strong balance force keeping stable and unchangeable, counteractive force generated during force balancing is changed, and serves as space supporting force to limit revolution of the planetary gears; the motion speed of autoroatation can be increased while the revolution speed of the planetary gears is limited to slow down, the quick and slow gradually-changed alternative process between revolution and autoroatation is achieved, the transmission ratio of the inner gear to the planetary gears is changed, meanwhile, the torsion force and the rotating speed of the output shaft are changed, and the aim of torsion changing and speed changing is achieved.

Description

technical field [0001] The invention relates to a torsion-variable speed-changing device for a motor vehicle transmission system, which is a transmission mechanism composed of an internal gear and a planetary gear. A force in the process, using this force to control and change the transmission ratio between the internal gear and the planetary gear, and to change the transmission ratio and torque between the input shaft and the output shaft by itself according to changes in the engine speed and vehicle speed The utility model relates to a mechanical stepless torsion transmission mechanism of a motor vehicle drive train and the technical field of a motor vehicle component device. Background technique [0002] The torque-variable transmission mechanism is an indispensable and important device in the drive train of a motor vehicle. The common original stepless torque-variable transmission technologies mainly include the following types: electric torque-variable transmission tech...

AI Technical Summary

Problems solved by technology

The design of electric torque shifting technology will add a lot of load and occupy space to the vehicle, and when it works for a long time at a high load stage, it will cause overheating; the impact mechanical transmission is a kind of intermittent transmission, which depends on changing The torque of the lever fulcrum changes the torque force. Due to the mechanical reciprocating motion, it will generate a large impact load during work, which is easy to cause mechanical damage. Therefore, these two principles of variable torque and speed cannot be adapted to motor vehicles Applications

Currently, the hydraulic torsion variable technology is widely used in motor vehicles. Compared with the electric and impact mechanical technologies, the hydraulic torsion variable has the advantage of relatively smooth power transmission, but the hydraulic torsion variable There is a contradiction between torque changing ability and efficiency. The coefficient of torque changing is relatively small and the efficiency is low. In practical applications, it is an automatic transmission composed of "planetary gear transmission" and "CVT continuously variable transmission technology". in order to be practical

The original "planetary gear transmission" is a planetary gear mechanism composed of internal gears, planetary gears and sun gears. The transmission principle is to control one of the three sets of gears through braking to switch the other two sets of gears. The input and output between the gears change the transmission ratio and torque force. Since the matching mechanical transmission device has many stages, many control mechanisms need to be designed to realize its control. Its structure is relatively complicated and difficult to manufacture. , the cost is relatively high, and due to design limitations, the vehicle cannot meet the requirements when driving under various road conditions

CVT continuously variable transmission technology, which uses the transmission belt and the variable working diameter of the driving wheel and the driven wheel to transmit power, can realize the continuous change between the transmission ratio, so as to obtain a reasonable match between the transmission ratio and the engine working condition, basically can realize Mechanical stepless transmission, but because the workpiece it uses cannot withstand the transmission of large torque, therefore, CVT stepless transmission technology can only be applied to small cars with small torque

Images