Power supply system of electric crane

A technology of electric cranes and power supplies, applied in electric vehicles, battery/battery traction, collectors, etc., can solve problems such as reducing the efficiency of cranes, hindering the work of other equipment, and reducing the efficiency of other equipment

Pending Publication Date: 2021-01-26
SANY MARINE HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Power supply system of electric crane
  • Power supply system of electric crane
  • Power supply system of electric crane

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] In addition, in the exemplary embodiments, since the same reference numerals denote the same components with the same structure or the same steps of the same method, if one embodiment is exemplarily described, only the same elements as those already described will be described in other exemplary embodiments. Different structures or methods of the embodiments are described.

[0028] Throughout the specification and claims, when one element ...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B60L50/60B60L1/00B60L3/00B66C13/22B66C13/30
CPCB60L1/00B60L3/0046B66C13/22B66C13/30B60L50/60Y02T10/70
Inventor 周成博李江涛周亚波
Owner SANY MARINE HEAVY IND
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