Buffer energy absorption device based on magneto-rheological materials

Abstract

The invention relates to a buffer energy absorption device based on magneto-rheological materials. The buffer energy absorption device comprises a double-sleeve structure and a magnet exciting coil used for generating a magnetic field. The double-sleeve structure is composed of an outer sleeve and an inner sleeve. One end of the double-sleeve structure is fixedly connected with a base, and the other end of the double-sleeve structure is fixedly connected with a sealing end cover. The double-sleeve structure is filled with the magneto-rheological materials. A gap is reserved between the outer sleeve and the inner sleeve of the double-sleeve structure and serves as an annular fluid channel. A piston is arranged in an inner cavity of the inner sleeve. A spring is arranged between the piston and the base. The piston and the inner wall of the inner sleeve are in sliding fit. The piston is fixed to a piston rod which extends out of the double-sleeve structure through the sealing end cover. A buffer head is arranged at the extended end of the piston rod. An opening is formed in the end, close to the base, of the inner sleeve to enable the inner cavity of the inner sleeve to be communicated with the annular fluid channel. A communication pipe is arranged at the end, close to the sealing end cover, of the double-sleeve structure to enable the annular fluid channel to be communicated with the inner cavity of the inner sleeve. According to the buffer energy absorption device based on the magneto-rheological materials, the damping force of a buffer device is adjusted in real time according to the magnitude of external impact force, and therefore the optimal buffer energy absorption effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of buffer energy absorption and relates to a buffer energy absorption device based on magnetorheological materials. Background technique [0002] As one of the main forms of motion, impact is a phenomenon that exists widely in nature. The purpose of studying impact is to reduce its harmful effects. As engineering equipment develops towards high-speed and heavy-loading, the impact intensity encountered is also increasing. , solving the problem of impact buffering is crucial to improving the quality of the project. Shock refers to the movement of the system under transient excitation. It is characterized by the fact that the action time of the excitation is much shorter than the movement period of the system, and it belongs to a sudden and violent movement. The traditional buffer energy-absorbing device is mainly made of materials such as rubber or spring. The main advantages of this type of buffer device are...

AI Technical Summary

Problems solved by technology

The traditional buffer energy-absorbing device is mainly made of materials such as rubber or spring. The main advantages of this type of buffer device are simple structure and low cost; however, this type of buffer device can only be used for the impact of specific loads, especially in places with high requirements. Occasionally, the buffering effect will be unsatisfactory, and the application range will be greatly limited.

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