A leveling control system and method of a supporting device and a fire truck

Abstract

The invention discloses a leveling control system of a support device, a method and a firefighting truck. The support device comprises a fixing rack, support arms, support legs as well as an inclined angle detection device, support detection devices, a support leg control valve and a controller, wherein the inclined angle detection device is used for detecting an inclined angle of the fixing rack; the support detection devices are used for detecting support states of different support legs; the support control valve and the controller are used for controlling action of different support legs; signal output ends of the inclined angle detection device and the support detection devices are connected with signal input end of the controller; the signal output end of the controller is connected with the support leg control valve; and the controller is used for confirming whether different support legs support in place or not according to signals of the support detection devices, used for judging a highest support leg of the four support legs according to signals of the inclined angle detection device, and used for leveling the support device by rising two support legs except the highest support leg each time under the control of the support leg control valve. The leveling control system and the method are high in leveling efficiency, good in leveling effect and beneficial to maintenance of gravity center balance of a whole vehicle.

Description

technical field [0001] The invention relates to the field of leveling control of support mechanisms, more specifically, to a leveling control system and method of support devices and a fire truck. Background technique [0002] During the construction of construction machinery, its center of gravity usually changes greatly. In order to ensure its own stability, construction machinery is usually equipped with a support device. The support device includes a movable support arm and a support leg connected to the end of the support arm. Before construction First, extend the movable support arm, and then extend the support legs to support the construction machinery. However, construction machinery usually needs to work in a horizontal state, and the construction machinery needs to be leveled through the support device. Make the construction machinery roughly work in a horizontal state. [0003] At present, in most construction machinery, such as concrete pump trucks, cranes, and...

AI Technical Summary

Problems solved by technology

[0005] The above method, when leveling, controls the action of the other three oil cylinders at the same time according to the highest point. Since the action of the oil cylinders is controlled by the electromagnetic proportional valve, the leveling efficiency is low due to the response time and precision of the electromagnetic proportional valve. At the same time, due to the simultaneous Controlling the movement of the other three oil cylinders may also easily cause overshoot, causing the highest outrigger to change or even lift off the ground, and the leveling effect is not ideal

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