Rotary type magneto-rheological damper

Abstract

The invention discloses a rotary type magneto-rheological damper which is characterized in that the damper mainly comprises an outer shell, a front end cap, a back end cap, a front magnet exciting coil, a back magnet exciting coil, a rotor, a bearing, a sealing washer, seal rings and magnetic isolation rings. The front and back end caps are located at the two sides of the rotor and are respectively connected with the outer shell, forming a stator. The bearing and the sealing washer are respectively arranged between the rotor and the front and back end caps. The front and back magnet exciting coils are wound inside the front and back end caps. The magnetic isolation rings are respectively installed between the front and back end caps and the outer shell, and O-shaped seal rings are respectively arranged between the magnetic isolation rings and the outer shell as well as the front and back end caps. A sealed liquid charging hole is formed at the upper part of the outer shell, and magneto-rheological fluid is filled in a hollow cavity between the stator and the rotor. The front and back magnet exciting coils are wound in the same direction, with the tail ends being connected with each other in series and the head ends being loaded with power sources. The two magnet exciting coils form two parallel magnetic pathways which generate two magnetic fields in opposite direction, and the magnetic flux is generated by a single piece of magnet exciting coils.

Description

technical field [0001] The invention relates to electronic devices, in particular to a rotary magnetorheological damper using magnetorheological fluid as a medium. Background technique [0002] Rotary MR dampers work by filling their stator and rotor with a MR fluid with controlled yield stress. The working area of ​​the rotor is one of the main factors affecting the performance of the damper. At present, some rotary magnetorheological dampers use the end surface of the rotor as the working surface, and the damper usually has a large radial dimension. Other rotary magneto-rheological dampers use the cylindrical surface of the rotor as the working surface, which is convenient to increase the axial and / or radial dimensions of the rotor to increase the output torque of the damper, but this structure fails to utilize the end surface of the rotor . In addition, in order to obtain a larger damping torque, a multi-disk magneto-rheological damper has also appeared. This kind of d...

AI Technical Summary

Problems solved by technology

Other rotary magneto-rheological dampers use the cylindrical surface of the rotor as the working surface, which is convenient to increase the axial and / or radial dimensions of the rotor to increase the output torque of the damper, but this structure fails to utilize the end surface of the rotor

In addition, in order to obtain a larger damping torque, a multi-disk magneto-rheological damper has also appeared. This kind of damper also uses the end face of the rotor as the working surface, and still has a relatively large axial dimension and a relatively complicated structure. insufficient

Images