Buffer using magneto-rheological cement gum

Abstract

The invention discloses a buffer using magneto-rheological cement gum. The buffer comprises a main body unit and a support unit for supporting the main body unit, wherein the main body unit comprises a cylinder block, a lower cover, an upper cover, a piston, a magnetic field device, a coil and the magneto-rheological cement gum; the upper cover and the lower cover are fixedly connected with the upper and lower ends of the cylinder block respectively in order to form a sealed accommodating space; the lower cover is fixedly connected with a support part; the middles of the upper cover and the lower cover are provided with a cover hole respectively; a piston is arranged between the two cover holes; a gap is formed between the piston and the inner wall of the cylinder block; the magnetic field device is fixed on a part, which is arranged in the accommodating space, of the piston; the magnetic field device is wound with the coil along a single direction; the accommodating space is filled with the magneto-rheological cement gum. By adopting the buffer, the buffer force and buffer capacity can be adjusted in a semi-active way, and the stability of the buffer force is improved. Meanwhile, the used magneto-rheological cement gum particles are prevented from settling, the buffer can work for a long time, and the sealing requirement is relatively low.

Description

technical field [0001] The invention relates to a buffer using magnetorheological cement, in particular to a buffer with adjustable buffer force and buffer capacity. Background technique [0002] The buffer is a safety protection device that absorbs the energy generated by the impact to reduce the impact of the protected equipment. It can effectively protect the engineering structure and improve safety on trains, bridges, and ships. The buffers commonly used at present can be roughly divided into two types: one is the energy storage buffer, which is generally a spring and a rubber buffer. This kind of buffer achieves the purpose of buffering by converting the impact kinetic energy into elastic deformation energy. It is mostly used for one-way buffering; the other is energy-consuming buffer, which dissipates energy through the damping movement of the piston between polyurethane, silicone oil and other materials. The biggest disadvantage is the long buffer stroke. The bufferi...

AI Technical Summary

Problems solved by technology

The buffers commonly used at present can be roughly divided into two types: one is the energy storage buffer, which is generally a spring and a rubber buffer. This kind of buffer achieves the purpose of buffering by converting the impact kinetic energy into elastic deformation energy. It is mostly used for one-way buffering; the other is energy-consuming buffer, which dissipates energy through the damping movement of the piston between polyurethane, silicone oil and other materials. The biggest disadvantage is that the buffering stroke is long

The buffer capacity of the traditional buffer is mostly determined by the fixed structure of the buffer, and the buffer force is not smooth when dealing with high-speed impacts and complex impacts, and cannot effectively play a buffering role

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