Vehicle as well as method and device for leveling hydro-pneumatic suspension of same

Abstract

The invention discloses a method for leveling a hydro-pneumatic suspension, which is used for leveling suspension cylinders of a hydro-pneumatic suspension. The method comprises the following steps: detecting the relative position of a cylinder lever and a cylinder barrel of one suspension cylinder; judging the relation between the suspension cylinder and a preset mid-position, and injecting oil into an upper cavity of the suspension cylinder and discharging the oil from a lower cavity of the suspension cylinder if the suspension cylinder is higher than the mid-position; if the suspension cylinder is lower than the mid-position, injecting oil into the lower cavity of the suspension cylinder and discharging the oil from the upper cavity of the suspension cylinder; if the suspension cylinder is located at the mid-position, stopping leveling; and circulating the steps until all suspension cylinders are located at the mid-position. By utilizing the leveling method, a plurality of suspension cylinders can be automatically leveled at the same time, thus obviously improving leveling efficiency and leveling quality of the hydro-pneumatic suspension. The invention further provides a leveling device using the leveling method as well as a vehicle equipped with the device. By utilizing the leveling device, vibration reduction performance and comfortability of the vehicle are enhanced.

Description

technical field [0001] The invention relates to the field of vehicle leveling, in particular to a leveling method and a leveling device for an oil-pneumatic suspension. In addition, the present invention also relates to a vehicle comprising the above-mentioned leveling device for a hydropneumatic suspension. Background technique [0002] Hydro-pneumatic suspension has become one of the main research directions of special vehicles and engineering machinery because of its good damping performance and passing performance, and has a good development prospect. The functions of car body lifting, front and rear pitching and left and right tilting can be realized by replenishing oil or draining oil on the suspension cylinder on the axle, which creates conditions for passing special ground such as roads with obstacles above and inclined roads, and improves the performance of the vehicle. Obstacle surmounting ability, improve the passability of the vehicle. For general flat roads or...

AI Technical Summary

Problems solved by technology

The leveling system has simple functions, and one person cannot operate all the suspension cylinders 11 at the same time

Therefore, the manual leveling system in the prior art is a point adjustment of a single suspension cylinder 11, which cannot meet the requirements for fast and accurate level adjustment of the vehicle

[0006] Moreover, due to the time delay of the operation, the leveling process may lead to overshooting of the action, and repeated manual operations are required to achieve the vehicle leveling state, resulting in a long time-consuming leveling process of the suspension cylinder 11 and the need for repeated operations. The leveling efficiency is low and cannot be used for high-precision leveling

At the same time, the manual leveling system puts forward higher requirements on the operating skills of the operator, and its leveling quality is greatly affected by the operating skills of the operator

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