Double-clutch directly controlled stepless speed regulator for tracked vehicle

Abstract

Disclosed is a double-clutch directly controlled stepless speed regulator for a tracked vehicle. Double clutches are connected with a double-clutch power input part. One part of power of the double-clutch power input part is output through a power output shaft speed reduction part, the other part of the power of the double-clutch power input part is transmitted to a stepless speed regulation part, the power output shaft speed reduction part transmits the power to an external operating part through a power output shaft part, the stepless speed regulation part transmits the power to a differential planetary transmission part, then the differential planetary transmission part transmits the power to drive a left track drive part and a right track drive part, a power output shaft gear shifting part is used for controlling switching of gear output of the double-clutch power input part for the power output shaft speed reduction part, and an external control connection part is used for achieving directly controlled steering. A double-clutch self-locking type hydraulic motor is adopted to control a planet carrier of a planetary gear transmission mechanism so as to achieve mechanical direct control and hydraulic stepless speed regulation, the switchover efficiency is high, integrated control is easy to implement, transmission efficiency is high, operation is easy and convenient, and steering precision is high.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery transmission, in particular to a double-clutch direct control continuously variable transmission for crawler vehicles. Background technique [0002] The tracked vehicle transmission system usually includes two main structures of the clutch and the transmission, and the wheeled vehicle transmission system mainly includes five main structures such as the clutch, the transmission, the universal drive, the final drive and the differential. Due to the large difference in structure and working principle between tracked vehicles and wheeled vehicles, the transmission system of tracked vehicles usually has the function of the steering system of wheeled vehicles; at present, tracked vehicles are mainly crawler tractors, and crawler tractors Usually, a purely mechanical power transmission system is used to transmit power, which has the advantages of simple structure and high efficiency. , Ac...

AI Technical Summary

Problems solved by technology

Due to the large difference in structure and working principle between tracked vehicles and wheeled vehicles, the transmission system of tracked vehicles usually has the function of the steering system of wheeled vehicles; at present, tracked vehicles are mainly crawler tractors, and crawler tractors Usually, a purely mechanical power transmission system is used to transmit power, which has the advantages of simple structure and high efficiency. It is difficult to control the coordination of throttle, gear and shifting, which limits the development of tractors

At present, many crawler tractor manufacturers have adopted the hydraulic pump-motor integrated system to realize the stepless driving system of the crawler tractor. Since the driving operability of the crawler tractor with the stepless driving system has been improved, agricultural machinery operators do not need to participate in professional technical training. , only need simple training to master the driving skills, so it is accepted by the majority of users and has achieved very good results, but after adding the hydraulic system, the complexity of the operating system and the manufacturing cost are increased

In daily production and use, crawler tractors are usually attached to agricultural machinery. When agricultural machinery is working in the field, the engine is generally in a state of high throttle, which is close to the rated operating condition of the engine. The speed changes little, and the power and torque of the machine are relatively large. , thus increasing the energy consumption of crawler tractors

[0003] At the same time, the crawler tractor vehicles on the market usually adopt the steering scheme of the steering rod to operate the jaw clutch and the multi-disc brake. The realization process is: when the crawler tractor vehicle turns left, the driver operates the left steering rod to make The left jaw clutch is separated and the left output shaft is braked. Since the transmission power on the left side of the crawler tractor is interrupted and braked to stop the rotation, at this time, driven by the power on the right side of the tractor, the implement turns to the left; the same reason The right steering can be realized by reverse operation, but this kind of steering mechanism is realized by separating and combining jaw clutch and brake, which has low steering precision and poor steering controllability

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