Power supply system of electric crane

Abstract

The invention provides a power supply system of an electric crane. A power battery and an emergency power supply are arranged in parallel, when the power battery breaks down, a whole vehicle control unit cuts off an output circuit of the power battery and conducts an output circuit of the emergency power supply, and the emergency power supply is used for providing electric energy needed by liftingoperation or running operation of the electric crane; emergency retraction and downward bending of an arm support of the electric crane can be achieved, the load is released, the electric crane can automatically run to an open space or a maintenance place, the situation that the electric crane carries the load or the arm support does not retract and downward bend and cannot move is avoided, and the electric crane can also be prevented from hindering normal work of other devices.

Description

technical field [0001] The invention relates to the technical field of electric cranes, in particular to a power supply system for electric cranes. Background technique [0002] Crane is the common name of crane, which is a kind of hoisting machinery. A working cycle includes: the pick-up device lifts the item from the pick-up place, then moves horizontally to the designated place to lower the item, and then performs a reverse movement to return the pick-up device to its original position for the next cycle. [0003] With the continuous development of electrification technology, electric cranes have been widely used. However, the power battery system of electric cranes has a certain risk of failure during work. When the power battery system fails, the crane can neither lift nor drive. When the boom of the crane is not stretched out, a trailer can be used to tow it away for maintenance. When the boom of the crane is stretched out, the boom can be avoided. Buildings and othe...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of electrification technology, electric cranes have been widely used. However, the power battery system of electric cranes has a certain risk of failure during work.

When the power battery system fails, the crane can neither lift nor drive. When the boom of the crane is not stretched out, it can be towed away for maintenance with a trailer. When the boom of the crane is stretched out, the boom can be avoided. Buildings and other equipment in the driving path cause damage, usually only waiting for maintenance personnel to arrive at the scene for repairs

This not only reduces the efficiency of the crane, but also further reduces the efficiency of other equipment because the crane stops working and hinders the work of other equipment.

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