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Chassis leveling system and method

A chassis and leveling technology, applied in the direction of vehicle maintenance, vehicle reloading, use feedback control, etc., can solve the problems of high precision and high speed, and achieve the effect of low precision and slow solution speed

Inactive Publication Date: 2011-03-30
SHANGHAI PAL FIN AUTOMATIC CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing manual hydraulic leveling is far from meeting the requirements of high precision and high speed

Method used

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  • Chassis leveling system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The structural diagram of the electronic control part of the chassis leveling system disclosed in Embodiment 1 of the present invention is as follows: figure 1 as shown,

[0041] The hydraulic relays installed on the left front, left rear, right front and right rear legs are used to judge whether the legs are on the ground. The inclination value of leveling two outriggers is passed to the PLC, and the PLC judges whether the value at this time is within the preset range. If it is within the allowable range, it will not level the current outrigger and continue to select other outriggers. If If it exceeds the allowable range, the PLC controls the opening of the hydraulic part to correspond to the vertical outrigger telescopic solenoid valve on the outrigger, and the solenoid valve opens to control the corresponding vertical outrigger telescopic oil cylinder to adjust the height of the outrigger. The height of the outrigger changes, and the inclination angle The output of ...

Embodiment 2

[0051] Embodiment 2 of the present invention is the same as the embodiment in other parts, except that a hydraulic lock is added on each leg. After each leg is leveled during the leveling process, the hydraulic lock on the leg is activated to keep The position of the hydraulic cylinder remains unchanged, ensuring that the leveling result is not affected by the outside world.

[0052] The embodiment of the present invention does not limit the use of the inclination sensor as the leveling sensor, as long as it is a sensor that can measure the height difference between the legs, it can be applied in the present invention, and the embodiment of the present invention does not limit the leveling process to be implemented according to Select the adjusted outrigger as described in Example 1, as long as the height of the four outriggers can be consistent and the chassis can be kept in balance.

[0053] Embodiments of the present invention have at least the following advantages:

[005...

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Abstract

The embodiment of the invention discloses a chassis leveling system. The system comprises an electric control part and a hydraulic part, wherein the electric control part is used for controlling the hydraulic part; the hydraulic part is used for leveling a chassis; the electric control part comprises an inclined angle sensor which is installed under a revolving shaft of the chassis and used for detecting whether pins are leveled or not and a programmable logic controller (PLC) used for controlling the hydraulic part; and the hydraulic part comprises a power source, an overflow valve, electromagnetic valves which are respectively installed on the four pins, hydraulic cylinders which are respectively installed on the four pins and hydraulic relays which are respectively installed on the four pins. The invention also discloses a chassis leveling method. The chassis leveling system and method control the hydraulic part to automatically level the chassis by the sensor and the PLC, can rapidly and accurately adjust the heights of the pins and solve the problems of low precision and low speed in the manual leveling process.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a chassis leveling system and method. Background technique [0002] Among the many construction machines, there are many construction machines with vehicle chassis hydraulic outriggers that need chassis leveling under working conditions. For example: various hydraulic cranes, various hydraulic fire engines, ladder vehicles, etc. In the military field, various anti-aircraft artillery vehicles also need to level the chassis of the artillery. [0003] There are two requirements for vehicle leveling: one is the leveling accuracy; the other is the speed of the leveling action. The high precision of leveling can improve the working efficiency and safety of engineering vehicles, and can improve the hit rate of artillery firing; the high speed of leveling action is very necessary for various emergency engineering vehicles, especially military vehicles. Therefore, the high precisio...

Claims

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Application Information

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IPC IPC(8): G05D3/12B60S11/00
Inventor 顾波史建敏李志勇顾伟谭峙
Owner SHANGHAI PAL FIN AUTOMATIC CONTROL TECH
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