Buffer energy-absorbing device based on magnetorheological materials

Abstract

The invention relates to a buffer energy-absorbing device based on magnetorheological materials, which includes a double-tube structure composed of an outer sleeve and an inner sleeve and an excitation coil for generating a magnetic field. One end of the double-tube structure is fixedly connected to the base, and the other One end is fixedly connected with the sealing end cap, and the double-tube structure is filled with magnetorheological materials. There is a gap between the outer sleeve and the inner sleeve of the double-tube structure as an annular flow channel, and the inner cavity of the inner sleeve is equipped with a piston. , there is a spring between the piston and the base, the piston is slidingly matched with the inner wall of the inner sleeve, the piston is fixed on the piston rod, the piston rod protrudes out of the double-barrel structure through the sealing end cover, the outer end of the piston rod is provided with a buffer head, and the inner The end of the sleeve close to the base is provided with an opening, which communicates with the inner cavity of the inner sleeve and the annular flow channel, and the end of the double-tube structure close to the sealing end cap is provided with a connecting pipe, which communicates the annular flow channel with the inner cavity of the inner sleeve . It adjusts the damping force of the buffer device in real time according to the magnitude of the external impact force to achieve the optimal buffer energy absorption effect.

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 a magnetorheological material. Background technique [0002] As one of the main forms of movement, shock is a widespread phenomenon in nature. The purpose of studying shock is to reduce its harmful effects. With the development of engineering equipment towards high-speed and heavy-duty, the impact strength encountered is also increasing. , Solving the impact buffer problem is very important to improve the quality of the project. Shock refers to the movement of the system under transient excitation. Its characteristic is that the action time of the excitation is much shorter than the movement period of the system, which is a sudden and violent movement. Traditional energy-absorbing buffer devices are mainly made of materials such as rubber or springs. The main advantages of this kind of buffer devices are simple structure and l...

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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