Continuously variable transmission adopting hydraulic control and flexible steering

A continuously variable transmission, hydraulic control system technology, applied in transmission control, gear transmission, multi-way valve, etc., can solve the problems of broken shaft, damaged steering gear, and high load requirements

CN109654177APending Publication Date: 2019-04-19YUNZHOU GEARBOX ZHEJIANG PROV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-19

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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.
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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...

Examples

Embodiment 1

[0050] Going straight: the small holes in the oil passages of the first steering shaft and the second steering shaft do not emit oil, the friction plates of the first friction clutch and the second friction clutch are loosened, and are in a natural state, and the teeth of gear M and gear L are engaged.

[0051]

Embodiment 2

[0053] Left reverse and right positive: the friction plate of the first friction clutch of the steering axis is loosened, the friction plate of the second friction clutch is pressed, the friction plate of the third friction clutch of the second steering axis is pressed, and the friction plate of the fourth friction clutch is loosened , the gear M is disengaged and moves to the left, and the gear L is locked in place and does not move.

[0054]

Embodiment 3

[0056] The left is positive and the right is slow: the friction plate of the first friction clutch of the steering axis is pressed tightly, the friction plate of the second friction clutch is pressed and released, the friction plate of the third friction clutch of the second steering axis is loosened, and the friction plate of the fourth friction clutch is released. The friction discs are pressed tightly, the gear M's cogging engagement remains in place, and the gear L's cogging is disengaged and moves to the right.

[0057]