Automatic landing leg leveling system, control method and wheeled crane

Abstract

The invention relates to a crane and aims to solve the problem that manual leveling of supporting legs of an existing wheeled crane is difficult to ensure precision. The invention provides an automatic landing leg leveling system which comprises four electric proportional valves, a leveling button, an electronic level meter and a controller, wherein the four electric proportional valves are used for correspondingly controlling vertical oil cylinders of four landing legs of a crane to stretch out and draw back; the leveling button is used for sending out leveling control signals; the electronic level meter is used for detecting the levelness of a frame of the crane; and the controller is used for receiving the levelness information of the frame and the automatic leveling control signal of the support leg detected by the electronic level meter, and controlling each electric proportional valve to enable the frame to be horizontal according to the levelness state information of the frame after receiving the leveling control signal. In the invention, after the leveling button triggers the automatic leveling system for the landing leg, the controller controls the corresponding electric proportional valve according to the detection result of the electronic level meter, so that the corresponding vertical oil cylinder of the landing leg does telescopic action, and the automatic leveling of the landing leg of the crane is realized, thereby reducing the operation difficulty and labor intensity of the leveling of the landing leg of the wheeled crane; and the leveling precision is ensured.

Description

technical field [0001] The present invention relates to a crane, and more specifically relates to an outrigger automatic leveling system, a control method and a wheeled crane. Background technique [0002] The movable outrigger is an important part of the wheeled crane. When the crane is hoisting, it bears the gravity and bending moment generated by the crane itself, the spreader and the objects being lifted. According to the control method, the movable outrigger can be divided into two types: mechanical lever type and electric control type. Electronically controlled movable outriggers are generally composed of horizontal cylinders, vertical cylinders, structural parts of movable outriggers, foot plates, pin shafts, hydraulic systems, control panels, controllers, wiring harnesses, etc. Generally, the crane has four outriggers, which are distributed on both sides of the body. When the crane is performing hoisting operations, first set up the outriggers, and when the horizon...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an automatic leveling system for outriggers, a control method and a wheeled crane to reduce the difficulty of leveling the outriggers in view of the difficulty in ensuring the accuracy of manual leveling of the outriggers of existing wheeled cranes , to ensure leveling accuracy

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