The invention relates to the technical field of engineering machines, and discloses a mobile crane, a moment limiting system of the mobile crane and a moment limiting method of the mobile crane. The moment limiting system comprises a pin shaft force measurement sensor assembly, an angle sensor assembly and a controller; the pin shaft force measurement sensor assembly is used for detecting stress information of the root of a movable arm in two different directions; the angle sensor assembly is used for detecting information of angles between the axes of corresponding arm sections in a cantilever crane of the mobile crane in the length direction and a horizontal plane; and the controller is used for building a moment balance system with a hinge point between a pull rod of the movable arm, with an arm head mechanism, of the cantilever crane and a supporting rod of the cantilever crane as a moment center, and the suspending load information of the mobile crane at current posture is obtained through the setting relationships between the stress information and the suspending load of the mobile crane and between the angle information and the suspending load of the mobile crane. When the moment limiting system of the mobile crane is used for conducting moment limiting on the mobile crane, the force taking accuracy is higher; and the calculating result is high in accuracy, and the safety of the mobile crane during operation is further improved.
Mobile crane, moment limiting system of mobile crane and moment limiting method of mobile crane
2015-11-25
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
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