Mobile type crane and control method and control device of horizontal support legs of mobile type crane

Abstract

The invention discloses a mobile type crane and a control method and a control device of horizontal support legs of a mobile type crane. The disclosed control method comprises the following steps of: firstly, controlling the horizontal support legs to extend outwards; secondly, detecting the distance L between the horizontal support legs and an obstacle; thirdly, comparing the L with a first vigilance distance L1; and fourthly, when the L is smaller than the L1, controlling the horizontal support legs to stop extending out. According to the control method, the phenomenon that the horizontal support legs generate collision with surrounding articles during extending can be effectively avoided, the possibility that the crane generates tip-over accidents is reduced and the safe reliability of the mobile type crane is improved. In addition, the control method has less influence from human factors, and thus labor cost is reduced, the accuracy for judgment can be improved and the possibility of fault is reduced. In addition, each horizontal support leg of the mobile type crane can be simultaneously detected and controlled; high and effective control efficiency is realized; and the operation safety of the mobile type crane is ensured.

Description

technical field [0001] The invention relates to the field of cranes, in particular to a control method and a control device for a horizontal leg of a mobile crane. In addition, the present invention also relates to a mobile crane comprising the above-mentioned horizontal outrigger control device. Background technique [0002] Mobile cranes are commonly used machinery in modern industry, and their outriggers include horizontal outriggers and vertical outriggers. The horizontal outriggers can be extended or retracted when the mobile crane is working, and the vertical outriggers are generally designed at the ends of the horizontal outriggers to support the ground when the horizontal outriggers are extended. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the outrigger structure of a common mobile crane in the prior art, and the direction indicated by the arrow in the figure is the forward direction of the mobile crane. [0004] The legs of the mobi...

AI Technical Summary

Problems solved by technology

[0007] Although this method has a voice alarm when the horizontal outrigger is extended, the control of the horizontal outrigger extension and the distance from the obstacle are completely dependent on the judgment of the operator. The human factor is huge and the reliability is not high.

Moreover, due to the limited field of vision and safety considerations, it is often impossible to perform horizontal extension operations on all horizontal outriggers at the same time, and the operation process is time-consuming and complicated, time-consuming and laborious.

Images