Steering motor

Abstract

Disclosed is a steering motor, comprising a casing () and a stator (), an outer wall of the stator () and an inner wall of the casing () forming a chamber (). The steering motor further comprises an upper cover buffering assembly () and an oil distributor (), which are fitted with each other to form an axial cavity (). A cylinder assembly () is provided below the oil distributor (), and comprises a cylinder () and an elastic oil bag (). Furthermore, the cylinder () is provided internally with a piston () which is connected to a lower end of the elastic oil bag () and slides axially along the cylinder. An oil flow passage (), an oil inlet () and a hollow column () are provided in the oil distributor (), the oil flow passage () being in communication with the axial cavity (), and an inner wall of the hollow column () being provided with an oil flow port in communication with the oil flow passage (). A directional control valve () having a valve core is provided in the hollow column (), and a radial cavity is formed by the inner wall of the hollow column () and an outer wall of the directional control valve () and is partitioned into two independent radial cavities by inserting a pin (). In the steering motor, by means of fitting the valve core with a valve cavity of the directional control valve, the oil passage is divided into two independent branch oil passages so as to simplify the structure; and the elastic oil bag is used to reduce frictional wear so as to prolong the service life of motor and reduce the costs.