Continuously variable transmission adopting hydraulic control and flexible steering

Abstract

A continuously variable transmission adopting hydraulic control and flexible steering comprises a box body and a hydraulic control system. The control box internally comprises an input shaft, a variable-speed shaft, a first steering shaft, a second steering shaft, a speed reduction shaft, a left output shaft and a right output shaft. The input shaft and the variable-speed shaft are each provided with a set of gears, are in transmission connection through the gears and can conduct gear shifting speed regulation. A first friction clutch used for controlling the differential speed is arranged atthe position, close to a gear G, on the first steering shaft. A second friction clutch used for controlling the forward direction and the reverse direction is arranged at the position, close to a gearI, on the first steering shaft. A third friction clutch used for controlling left steering is arranged at the position, close to a gear M, on the second steering shaft. A fourth friction clutch usedfor controlling right steering is arranged at the position, close to a gear L, on the second steering shaft. The continuously variable transmission has the beneficial effects that the friction clutches are directly controlled by the transmission by means of the hydraulic system, impact on steering brake shafts, steering gears and friction plates is reduced, and the service life of the transmissionis prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical transmissions, in particular to a flexible steering continuously variable transmission with hydraulic control. Background technique [0002] In recent years, my country's agricultural machinery industry has developed rapidly. The transmission used in it has undergone a transformation from mechanical shift control to continuously variable speed control using HST. One side of the drive wheel is locked, and the other side is normally driven, so as to achieve steering control. [0003] In a large number of market customer surveys, it was found that the steering control part (steering brake shaft, steering gear, steering brake seat, etc.) of traditional agricultural machinery gearboxes has a high probability of abnormal damage during actual use. After analysis, the main reasons are two aspects: 1. The traditional steering control is to lock the driving wheel on one side and drive the other side norm...

AI Technical Summary

Problems solved by technology

After analysis, the main reasons are two aspects: 1. The traditional steering control is to lock the driving wheel on one side and drive the other side normally, that is, to rely on rigid drag to realize the steering. This steering method has high load requirements on the steering shaft and steering gears. ; 2. The working condition of agricultural machinery is bad. If the track of the agricultural machinery is stuck in the mud when turning, the farmer fails to follow the correct operation specification and still carry out forced steering, which will cause the load of the steering control parts to exceed the limit of the design load, resulting in shaft breakage , Steering gear damage, etc.

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