Novel damping and cushioning integrating device

Abstract

The invention discloses a novel damping and cushioning integrating device. The novel damping and cushioning integrating device comprises a cylinder with the variable cross-section, a first piston arranged in the cylinder, a first piston rod connected to the first piston, a second piston rod connected to the first piston, a second piston arranged at the end of the second piston rod, and an upper end cover and a lower end cover arranged at the end of the cylinder, the cylinder comprises a damping section and a buffering section, and a gap is kept between the first piston and the inner wall of the cylinder; and the second piston is arranged in the buffering section, the second piston can move in the axial direction of the cylinder, and the buffering section is filled with ferromagnetic particle small balls. According to the technical scheme of the novel damping and cushioning integrating device, the performance of a magnetorheological damper is used, a variety of external working conditions can be adapted, and the high damping performance is achieved; and during buffering, the particle damper performance is used, the output force value is stable, a magnetic field is changed by adjusting the coil current, the friction coefficient of the second piston and particles is adjusted, a variety of buffering conditions can be adapted, and the novel damping and cushioning integrating deviceis compact in structure and simple in mounting form.

Description

technical field [0001] The invention relates to the field of mechanical vibration reduction, in particular to a novel integrated device for vibration reduction and buffering. Background technique [0002] Existing devices that can both reduce vibration and buffer mainly include particle dampers, magnetorheological dampers, and the like. The particle damper has the advantages of simple structure, small size, low cost, and does not require external energy input. It uses friction between particles, piston head and particle friction to consume energy, and the output force value is stable and large in the buffer stroke, but it is a passive energy absorber. , can only be applied to a single working condition; as a semi-active energy absorber, the magnetorheological damper only needs a small amount of external energy input to realize the change of the output force. The adjustment of the input current produces different output forces, which can cope with changing and complex extern...

AI Technical Summary

Problems solved by technology

The particle damper has the advantages of simple structure, small size, low cost, and does not require external energy input. It uses friction between particles, piston head and particle friction to consume energy, and the output force value is stable and large in the buffer stroke, but it is a passive energy absorber. , can only be applied to a single working condition; as a semi-active energy absorber, the magnetorheological damper only needs a small amount of external energy input to realize the change of the output force. The adjustment of the input current produces different output forces, which can cope with changing and complex external working conditions, but the output force of the magnetorheological damper is greatly affected by the speed, and the requirements for the control algorithm are high and the controllability is not good under the buffering condition.

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