Mixed type damping gap adjustable valve type magnetorheological damper

Abstract

The invention aims to provide a hybrid damping clearance adjustable valve type magnetorheological damper. The hybrid damping clearance adjustable valve type magnetorheological damper comprises a piston rod, a left end cover, a cylinder body, a first piston head, a coil and a second piston head, a first piston head, a second piston head and a circular ring groove combination are arranged in the cylinder body to form an embedded stepped damping channel, so that the effective length of the damping channel is increased, and the output of damping force is increased; the elastic connecting piece connected with the interior of the piston head is pressed, the size of the gap of the liquid flow channel can be changed, namely the damping force is changed, and the adjustable range of the damping force is enlarged. The mixed type damping gap adjustable valve type magnetorheological damper can overcome the defects that a magnetorheological damping device in the prior art is narrow in amplitude modulation range and small in output damping force, and has the advantages of being easy to operate, large in amplitude modulation range and large in output damping force.

Description

technical field [0001] The invention relates to the field of mechanical engineering vibration reduction, in particular to a hybrid damping gap adjustable valve type magnetorheological damper. Background technique [0002] Magnetorheological fluid is a new type of smart material. When there is no external magnetic field, the magnetorheological fluid behaves as a fluid state with good fluidity. When a magnetic field is applied, the magnetorheological fluid can be converted into a viscoelastic solid within milliseconds. And the whole process is reversible, controllable and rapid. The magnetorheological damper uses this feature to realize the change of the output damping force through the difference of the input current. The size and adjustable range of the damping force are important indicators to measure its performance quality. [0003] In the traditional valve-type magnetorheological damper, the liquid flow channels in the valve are mostly linear, which leads to a small len...

AI Technical Summary

Problems solved by technology

[0003] In the traditional valve-type magneto-rheological damper, the liquid flow channel in the valve is mostly linear, which results in a small effective damping channel length, so that the output damping force is small

However, the existing valve-type magneto-rheological dampers change the shape of the damping channel. Compared with the traditional magnetorheological dampers, they increase the damping force, but the damping adjustable range is still very limited.

In order to increase the adjustable range of the damper, some dampers choose to have an adjustable damping device, but this will increase the structural stroke and make it difficult to install

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