Magneto-rheological buffering device

Abstract

The invention discloses a magneto-rheological buffering device. The magneto-rheological buffering device comprises a work cylinder and an electromagnetic piston assembly. The electromagnetic piston assembly is arranged in the work cylinder and divides the work cylinder into a first cavity and a second cavity. The first cavity and the second cavity are filled with magneto-rheological media. The electromagnetic piston assembly comprises a piston head and a magnet exciting coil. A spiral damping channel for the magneto-rheological media to flow between the first cavity and the second cavity is arranged on the outer surface of the piston head, and the magnet exciting coil is arranged on the radial outer side of the spiral damping channel. Due to the fact that the spiral damping channel is arranged on the outer surface of the piston head, compared with a damping channel of a linear structure, the effective length of the damping channel can be increased, the output range of the damping force is enlarged, and the requirement for buffering under the high-speed impact can be met. The magnet exciting coil is arranged on the radial outer side of the spiral damping channel, and the magnet exciting coil can form a magnetic field perpendicular to the moving direction of the magneto-rheological media in the damping channel. Due to the fact that a cylinder body of the work cylinder does not need to serve as a magnetic conductive component, the machining technology is simplified, and the utilization rate of the magnetic field is increased.

Description

technical field [0001] The invention relates to the technical field of vibration buffering, in particular to a magnetorheological buffering device. Background technique [0002] Cushioning refers to the process of alleviating the mechanical vibration of vehicles, aerospace equipment, heavy machinery or weapons when they are subjected to high-speed impact, so that the force is flattened. In practice, there are various impact situations, such as: aircraft landing, gun firing, elevator falling, machine tool parts fast reciprocating movement, etc. These impact situations will cause great impact on mechanical equipment, and the parts of mechanical equipment It will generate a lot of dynamic stress, and may even directly cause damage to parts. Therefore, it is necessary to take buffer measures when the mechanical equipment is impacted. The magnetorheological buffer device is an intelligent shock absorbing device developed with the magnetorheological medium as the filling material...

AI Technical Summary

Problems solved by technology

However, the existing magneto-rheological buffer devices all set the damping channel at the gap between the working cylinder and the piston in a straight line form. The effective length of the damping channel formed by it is very short, the output damping force is very small, and the damping force can be adjusted The range is not large, it is difficult to meet the cushioning requirements under high-speed impact

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