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Xi'an Hoan Microwave Co.,ltd

Impact and Solution of Shock and Vibration

2019.03.19
Shock and vibration affect the performance and longevity of a wide range of mechanical and electrical equipment. In most cases, the combination of elastic elements (metal mesh, elastomer, spring steel, etc.) and a metal bracket are used to avoid the effects of shock and vibration. However, wire rope vibration isolator (also known as a screw seat or cable holder) has better insulation shock and vibration performance than other types of vibration isolation devices.

The wire rope isolators damping is made of a wire rope spirally wound and fixed between two metal plates arranged along the nut. Its stiffness and damping depend on the diameter of the wire rope, the number of strands, the number of turns and the winding method and size. It is a new type of vibration isolator with nonlinear characteristics and dry friction damping. The steel wire rope which is wound by a plurality of strands of steel wire in a certain direction is used as an elastic element and has obvious hysteresis characteristics. Its energy dissipation is derived from the friction, extrusion, and slip between the wires.

When the excitation and impact amplitude are sufficiently large, internal friction occurs between the strands of the isolator wire rope. And it is opposite to the direction of movement of the wire rope, which consumes a lot of energy and attenuates vibration and impact strength. When the amplitude of the vibration is small, the strands of the wire rope are screwed together due to friction, and no relative slip occurs, thereby exhibiting good linear elasticity and maintaining the stability of the system. Therefore, the wire rope vibration isolator is adapted to the complicated and variable working conditions of vibration and impact. Its self-adaptive ability is particularly strong, and it can effectively avoid strong resonance and impact, thus acting as a buffer for vibration isolation.

The stainless steel wire rope isolators has the properties of corrosion resistance, impact resistance, high and low temperature resistance. It is not only suitable for vibration isolation buffers for electronic, mechanical equipment, computers and instrumentation on airborne, onboard, and shipboard. It is also applicable to the safety protection of missile satellite navigation, navigation and launch systems, and the vibration isolation buffer of mechanical and electronic equipment and facilities in harsh environments such as high and low temperature and chemical pollution.
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