Permanent-magnet adjusting assembled magnetorheological buffer

Abstract

The invention discloses a permanent-magnet adjusting assembled magnetorheological buffer, including: outer pipe and inner pipe. Two ends of the outer pipe respectively set front and rear end cover to make the outer pipe form closed cylinder. One end of the inner pipe is piston type in the outer pipe. The middle section of the inner pipe is fixed at the spline section of the inner pipe by close fit. An orifice is formed between the spline section and piston inner diameter to make the magnetic rheologic liquid pass through. The piston divides the outer pipe into two cavities with the magnetic rheologic liquid. A screw is fixed in the inner pipe, which sets alnico. A closed buffer air chamber is arranged between the back-end covers of the inner pipe and outer pipe. The ends of the outer pipes respectively set guide seat and seal ring and guide ring on the guide seat and piston. The magnetic rheologic liquid is arranged between the guide seat and piston. The invention has the constructible structure and provides damping force by own magnetic rheologic liquid without power supply and control damping force by alnico regulation.

Description

technical field [0001] The invention mainly relates to the field of dampers, in particular to a magneto-rheological damper of permanent magnet adjustment assembly type. Background technique [0002] Magneto-rheological damper is a new type of damper that has been released recently. It has the advantages of controllable damping, small size and high efficiency, and has an excellent market prospect. At present, the magnetorheological dampers available on the market are all electromagnetically adjustable, such as the products of the American lord company. The damper is composed of magnetorheological fluid, piston, coil, outer cylinder, etc., and the reciprocating external force acting on both ends of the damper pushes the piston. , the magnetorheological fluid at both ends of the piston reciprocates through the orifice on the piston. When the current in the coil increases, the magnetic field in the orifice will increase, and the resistance of the magnetorheological fluid flowin...

AI Technical Summary

Problems solved by technology

However, when it is used for outdoor structures and structures such as bridges to resist earthquakes, it is inconvenient or cannot guarantee reliable power supply, thus restricting the application of magnetorheological dampers in these fields

In addition, once a part of the magneto-rheological damper with integral structure in the prior art is damaged, the expensive damper will be scrapped as a whole, and it cannot be repaired by replacing parts, resulting in Serious waste

Images