Low-frequency three-dimensional vibration isolation mining dump truck seat based on magnetic negative stiffness spring design

Abstract

The invention discloses a low-frequency three-dimensional vibration-isolating vehicle seat based on a magnetic negative-stiffness spring design, and aims to solve the problem that a common car seat cannot isolate low-frequency vibrations in a horizontal direction. The low-frequency three-dimensional vibration-isolating vehicle seat comprises a vertical vibration-isolating part and a horizontal vibration-isolating part, wherein the vertical vibration-isolating part comprises a shear type suspension and a zero-stiffness magnetic damper; the shear type suspension comprises a hinged type link mechanism which is connected between a shear type suspension upper part and a shear type suspension lower part; the two ends of the zero-stiffness magnetic damper are separately positioned on the shear type suspension upper part and the shear type suspension lower part; the horizontal vibration-isolating part comprises an upper plate, a rubber damping spring seat, a primary magnet set, an outer magnet set and a seat fixing frame; when the seat bears the vibrations in the horizontal direction, a seat plate connecting plate horizontally vibrates, so that a rubber damping spring horizontally vibrates while a magnet on a bottom plate vibrates relatively; by virtue of the acting force of the rubber spring and a magnetic negative-stiffness spring to the upper plate, the upper plate is kept to have relatively small vibration displacement, and therefore, vibrations in the horizontal direction are isolated.

Description

technical field [0001] The invention belongs to the field of automobile seats, and in particular relates to a low-frequency three-dimensional vibration-isolation automobile seat designed based on magnetic negative stiffness springs applied to mining dump trucks. Background technique [0002] With the development of the automobile industry, higher requirements are put forward for the comfort of the car. The car seat is one of the important factors affecting the driver. As a common mining vehicle, the mining dump truck is driven on rough mine roads. The roads and driving conditions are very harsh. Due to the harsh working conditions for a long time, if the driver of a mining dump truck sits on a seat that generally has no vibration isolation effect, the chances of injury to the spine, stomach and other organs are greatly increased compared with drivers of other vehicles. Due to the complexity of the man-machine system of mining dump trucks, improving the comfort of the driver...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a low-frequency three-dimensional vibration-isolation car seat based on a magnetic negative stiffness spring design. Vertical vibration is not suitable for multi-dimensional vibration environment. At the same time, the structure of the whole system is simple, and good vibration isolation effect can be achieved without precise design and processed parts.

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