Horizontal vibration isolation suspension for non-highway vehicle seat

Abstract

The invention relates to a horizontal vibration isolation suspension for a non-highway vehicle seat, which comprises a limiting device, an upper bottom plate long U-shaped plate, an upper bottom plateshort U-shaped plate, a lower bottom plate long U-shaped plate, a lower bottom plate short U-shaped plate, an upper vibration isolation plate, a lower vibration isolation plate, steel balls and screws, wherein the upper bottom plate long U-shaped plate is connected with the upper vibration isolation plate through the screws; the lower bottom plate long U-shaped plate, the limiting device and thelower vibration isolation plate are connected through the screws; grooves are formed in the contact surface of the upper vibration isolation plate and the lower vibration isolation plate; and the steel balls are placed in the grooves. The upper vibration isolation plate and the lower vibration isolation plate on each side are provided with two grooves, four grooves are provided, and the steel balls can move in the grooves in the horizontal direction. The structure converts horizontal vibration transmitted from the ground into rolling of the steel balls, thereby achieving low-frequency vibration isolation in the horizontal direction. The seat achieves low-frequency vibration isolation in the front-back and left-right horizontal directions. The invention belongs to passive vibration isolation, does not need the input of external energy, and has low cost and simple structure compared with an active semi-active seat vibration isolation suspension.

Description

technical field [0001] The invention relates to the technical field of multi-dimensional vibration isolation for off-highway vehicle seats. In particular, it relates to a horizontal vibration isolation suspension for an off-highway vehicle seat. Background technique [0002] The working environment of construction vehicles is harsh and the working conditions are complicated, and multi-dimensional vibrations will be generated during work. The vibration frequency is mainly in the range of 1-20Hz. This vibration will cause various occupational diseases such as lumbago, stomachache, and back discomfort of the driver, which will seriously affect production efficiency and increase social medical costs. Therefore, the problem of vibration control of engineering vehicles has always been a research hotspot of widespread concern. As the last link of the vibration transmission path, the seat plays an important role in isolating the transmission of vibration to the driver due to its l...

AI Technical Summary

Problems solved by technology

[0003] At present, most seat suspensions only isolate the vibration in the vertical direction, and there are multi-dimensional vibrations in non-road vehicles, such as vibrations in multiple dimensions such as horizontal direction and angular rotation, and the excitation frequency of this horizontal vibration is very low, resulting in Isolation of low-frequency vibrations cannot be achieved by general methods

There used to be seat horizontal vibration isolation suspension in history, but it was not recognized by the market because the structure was too complicated

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