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Automatic locking and leveling system and method of vehicle

An automatic locking and vehicle technology, applied in vehicle maintenance, lifting vehicle accessories, fluid pressure actuation devices, etc., can solve the problems of increasing system power and heat generation, increasing system power consumption, and throttling loss, etc., to achieve The effect of reducing flow demand, reasonable action sequence, and accelerating no-load extension speed

Active Publication Date: 2018-11-20
BEIJING INST OF SPACE LAUNCH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lock-type hydraulic cylinder needs a separate high-pressure oil for unlocking when it is in motion, which increases the power and heat generation of the system and limits the reduction of the system volume
[0004] Some special vehicles require high leveling accuracy, and generally use proportional valves to adjust flow, and some use position sensors to check outrigger strokes, so the system is more complicated and the cost is higher
Proportional valves are used for the whole process of leveling, which will also cause throttling loss and increase system power consumption
[0005] Therefore, there is a certain contradiction between the technical requirements of high precision and long-term locking of the leveling system, and the engineering application requirements of low power, small volume, low cost and reliability

Method used

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  • Automatic locking and leveling system and method of vehicle
  • Automatic locking and leveling system and method of vehicle
  • Automatic locking and leveling system and method of vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Four-legged vehicle sub-locking and leveling system such as figure 1 As shown, it is composed of leveling pump station box, hydraulic outrigger, inclination sensor and oil circuit. The hydraulic outriggers are symmetrically installed on the side of the vehicle chassis, the leveling pump station box is installed on the side of the vehicle chassis, the electric control box is installed inside the leveling hydraulic box, the inclination sensor is installed horizontally on the chassis, and the two direction axes of the inclination sensor Parallel to the transverse and longitudinal directions of the vehicle, the longitudinal direction of the vehicle is the direction from the front to the rear, the transverse direction of the vehicle is perpendicular to the longitudinal direction of the vehicle, and the hydraulic oil circuit and cables are arranged on the chassis.

[0061] The four-leg vehicle sub-locking and leveling system has 4 hydraulic outriggers in total, which are 2 fr...

Embodiment 2

[0101] Six-leg vehicle locking and leveling system such as figure 1 As shown, it is composed of leveling pump station box, hydraulic outrigger, inclination sensor and oil circuit and other equipment. The 6 hydraulic outriggers are symmetrically installed on the side of the vehicle chassis, the leveling pump station box is installed on the side of the vehicle chassis, the electric control box is installed inside the leveling hydraulic box, the inclination sensor is installed horizontally on the chassis, and the hydraulic pipelines and cables are arranged on the chassis. The functions of other components are the same as the above-mentioned four-leg leveling system.

[0102] The difference from the four-legged vehicle locking and leveling system in Embodiment 1 is that a pair of intermediate hydraulic outriggers are added between the front and rear outriggers to improve the stability of the vehicle or platform after leveling and improve the structural stress. All six hydraulic ...

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Abstract

The invention discloses an automatic locking and leveling system of a vehicle. The requirements of small size, low power, economical efficiency, reliability and stability of the leveling system are met, and furthermore, a leveling method matched with the leveling system is provided. The flow of each stage of leveling is adjusted through an electromagnetic valve, the problems of the judgment of grounding of hydraulic supporting legs, the judgment of the vehicle lifting height, the judgment of the stretching and retracting limit position and the like generated after a hydraulic supporting leg displacement sensor is removed are solved, so that the high-precision leveling of the vehicle or a platform is realized.

Description

technical field [0001] The invention relates to an automatic locking and leveling system and method of a vehicle, belonging to the technical field of hydraulic transmission and control. Background technique [0002] Some special vehicles need to be leveled before work to provide a level and stable working platform for on-board equipment or personnel. Limited by installation space and weight, the leveling system is generally required to be small in size and low in power. From an economical point of view, the cost of the leveling system is required to be as low as possible. From the perspective of use, the leveling system is required to have high precision and reliability. [0003] In order to maintain leveling accuracy for a long time after leveling and not be affected by oil leakage and oil temperature changes, some hydraulic leveling systems use locking hydraulic cylinders as leveling legs, which have the advantages of large driving force and smooth movement. However, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/02B60S9/10
CPCB60S9/10F15B11/08F15B13/02
Inventor 高亚东郭初生赵黎明王磊张士军刘洪波卢绍伟曾毅韩洋付曙光
Owner BEIJING INST OF SPACE LAUNCH TECH
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