Approximating type hydraulic leveling method

A hydraulic and leveling technology, used in vehicle maintenance, transportation and packaging, lifting vehicle accessories, etc., can solve the problems of poor positional adaptability, slow leveling speed, complex system, etc., and achieve fast leveling speed, low vibration, The effect of high leveling accuracy

Inactive Publication Date: 2017-05-24
WUHAN BINHU ELECTRONICS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method realizes the precision leveling requirements of the heavy platform, and solves the problems of slow leveling speed, large vibration, empty legs, poor position adaptability, and poor reliability of the system

Method used

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  • Approximating type hydraulic leveling method
  • Approximating type hydraulic leveling method
  • Approximating type hydraulic leveling method

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specific Embodiment

[0030] The invention relates to leveling a vehicle-mounted platform larger than 20 tons. The maximum stroke of the leveling legs is not greater than 55cm, the height of the wheels of the vehicle-mounted platform from the ground is not greater than 35cm, the single-axis levelness of the ground is required to be not greater than 3 degrees, and the hydraulic leveling accuracy can also be as high as Within 1 point. The leveling process needs to be stable and requires a certain amount of time.

[0031] 1.1 Preliminary adjustments

[0032] According to the sum of the load-bearing capacity of the four leveling legs and the load-bearing capacity of each leg, the load-bearing capacity of each leg is roughly equal. Since the vehicle-mounted platform is designed so that the weight is evenly distributed in the center of the vehicle-mounted platform, the load-bearing capacity can be determined The roughly equal four legs are on a plane, which can be set as the initial plane. Assume that ...

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Abstract

The invention belongs to the field of automatic control and relates to an approximating type hydraulic leveling method. According to the approximating type hydraulic leveling method, through levelness of a platform, a needed leveling leg journey from the plane of the current platform to another plane with double-axis horizontal deviation being decreased is calculated, and corresponding leveling legs are controlled to stretch out and draw back of for approximating a superior plane; and after approximating is completed, the process is repeated, and repeated approximating is conducted till needed accuracy is achieved. According to the approximating type hydraulic leveling method, the requirement of the heavy platform for leveling of the accuracy is achieved, and the problems that the leveling speed is slow, vibration is large, virtual legs occur, adaptability of a position is poor, and a system is complex and poor in reliability are solved.

Description

technical field [0001] The invention belongs to the field of automatic control and relates to an approaching hydraulic leveling method. Background technique [0002] Hydraulic leveling is widely used in the field of vehicle-mounted platform leveling. At present, there are many methods with mature technology: 1. Height-by-height method, find the leveling leg with the highest level in the platform as a reference, and set the other three legs according to the level. For the extended stroke, the three leveling legs are synchronously extended in proportion by adjusting the opening of the hydraulic proportional directional valve to achieve the purpose of leveling. 2. The virtual plane method, set a virtual plane to be reached according to the current state of the platform, set the stroke of the four legs to the virtual plane according to the level, and synchronously extend and retract the four legs by adjusting the opening of the hydraulic proportional directional valve. Flat leg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60S9/10
CPCB60S9/10
Inventor 张磊杨俊伟刘朝亮夏建
Owner WUHAN BINHU ELECTRONICS
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