Hydraulic structure assembly of steering gear

Abstract

The invention discloses a hydraulic structure assembly of a steering gear. The hydraulic structure assembly comprises an input shaft, a torsion bar, a screw, a valve element and an upper end cover; aU-shaped groove is designed outside the valve element, a sealing ring and a damping ring are installed in the U-shaped groove, the valve element makes contact with the surface of an inner hole of a valve sleeve of the screw through the damping ring, so that steering noise in work is reduced, and the sealing ring conducts abrasion compensation and temperature rise compensation on the damping ring;a V-shaped flow guide groove is formed in the U-shaped groove, so that high-pressure oil can enter the U-shaped groove to press the damping ring; under the combined action of the sealing ring, the damping ring and the high-pressure oil, the combined structure hinders rotation of the valve element, so that the valve element can work more flexibly, and steering noise caused by collision or dry friction or sudden pressure change between the valve element and the inner wall of the screw valve sleeve hole is reduced. The inner gland and the outer gland are arranged on the side, matched with the upper end cover, of the screw, the split design of the inner gland and the outer gland can solve the problem that the thread screwing and length are limited in a specific narrow space, the structure is compact and reliable, and arrangement of the whole vehicle is facilitated.

Description

technical field [0001] The invention relates to the technical field of a steering gear, in particular to a steering gear hydraulic structure assembly. Background technique [0002] As a key component in the steering system of an automobile, the performance of the steering gear directly affects the operability of the entire steering system. At present, the rotary valve of the hydraulic power steering gear that is more popular in the market has a complex structure, and when the required output torque is large, the size of the steering gear is large, which affects the layout of the vehicle. The input shaft and the valve core are usually integrated, requiring high coaxiality and difficult processing. , the steering mechanical limit is usually a cylindrical pin with an oval hole, which requires high machining accuracy and is difficult to limit accurately, or design a four-point limit tooth at the bottom of the inner hole of the screw valve sleeve and design a matching structure a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a steering gear hydraulic structure assembly, which solves the problem of high steering noise

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