Steering mechanism of three-wheel tractor

Abstract

The invention relates to a steering mechanism of a three-wheel tractor. The steering mechanism comprises a steering wheel, a frame, a plane bearing, steering oil cylinders and a U-shaped fork, whereinthe plane bearing comprises a bearing seat, a drive disk arranged on the upper part of the bearing seat as well as a driven disk and roll balls arranged on the lower part of the bearing seat; the lower part of the U-shaped fork is connected with the steering wheel, and the upper part is connected with the driven disk with a roller path; the frame is connected with the bearing seat which is arranged between an upper roller path and a lower roller path and provided with a radial shaft shoulder; the roll balls are respectively arranged among the a roller path of the driving disk, the upper roller path and the lower roller path of the bearing seat and the roller path of the driven disk; the driving disk and the driven disk are connected through a fastening piece, and an adjustment spacer is arranged between the driving disk and the driven disk; the two steering oil cylinders are symmetrically distributed at both sides along the longitudinal center of the tractor; one end of each steeringoil cylinder is hinged on the frame, while the other end is hinged on the driving disk; and front oil cavities and rear oil cavities of the two steering oil cylinders are connected in series through ahydraulic oil pipe. The invention has the characteristics of safety, reliability, flexible and light operation and high connecting strength and rigidity.

Description

[0001] technology field [0002] The invention relates to a steering mechanism of a three-wheel tractor, belonging to the technical field of tractor steering mechanisms. Background technique [0003] The full hydraulic steering system is mainly composed of steering wheel, hydraulic steering gear, steering cylinder and steering mechanism. By turning the steering wheel, the spool of the hydraulic steering gear produces an angular displacement, which drives the displacement of the steering cylinder, and the steering cylinder drives the steering mechanism to rotate in phase to make the steering wheel rotate, so as to achieve the purpose of vehicle steering. But the steering mechanism of motor vehicle such as tractor, all adopts trapezoidal steering mechanism, makes trapezoidal steering mechanism action by steering pull rod, realizes that two steering wheels are synchronously linked to drive the tractor to turn. This steering mechanism is only suitable for four-wheel models, not f...

AI Technical Summary

Problems solved by technology

The steering mechanism is only suitable for four-wheel models, not for single-steering wheel structure

For the front-wheel-guided three-wheeled motor vehicles, the steering mechanism mostly adopts the vertical shaft casing structure, and the two bearings are respectively installed between the vertical shaft and the casing. On the one hand, the operation is not flexible, and the stiffness of the steering mechanism is small. Operability and reliability are reduced. On the other hand, due to the large axial dimension of the vertical shaft casing structure, it cannot be used for field functions, so it cannot be applied to the front steering mechanism of a three-wheel tractor

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