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Isolated lightning protection system for crane and crane

A lightning protection system, crane technology, applied in emergency protection circuit devices, electrical components, circuit devices, etc. for limiting overcurrent/overvoltage, can solve problems such as hardware damage, affecting the movement of the whole vehicle, and rising

Inactive Publication Date: 2019-04-05
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this wiring method can ensure good grounding, when the crane is struck by lightning, the ground potential will rise rapidly. The instantaneous high voltage of this ground wire will reverse the breakdown of electrical components, resulting in hardware damage and affecting the operation of the whole vehicle.

Method used

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  • Isolated lightning protection system for crane and crane
  • Isolated lightning protection system for crane and crane
  • Isolated lightning protection system for crane and crane

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Embodiment Construction

[0029] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0030] An embodiment of the present invention provides an isolated lightning protection system for a crane. The positive terminal of the electrical components included in the isolated lightning protection system is connected to a power supply, and the negative terminal is connected to the electric control cabinet of the crane's control room through a cable.

[0031] This embodiment of the present invention provides that the electrical components in the isolated lightning protection system for the crane adopt a two-wire wiring method, such as image 3 As shown, the electrical compo...

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Abstract

The embodiment of the invention provides an isolated lightning protection system for a crane and a crane, belonging to the technical field of lightning protection. The system comprises an electrical element having a positive electrode end connected with a power source and a negative electrode end connected with an operating house electric control cabinet of a crane through a cable and arranged ona lifting arm of the crane. According to the technical scheme, the ground wire of the electrical element is separated from a metal part of the crane to effectively avoid the accident that the crane isstruck by lightning to cause the lightning strike current of the crane reversely breaking down the electrical element so as to greatly reduce the probability of damaging of the electrical element.

Description

technical field [0001] The invention relates to the technical field of lightning protection, in particular to an isolated lightning protection system for a crane and the crane. Background technique [0002] Existing mobile cranes, due to the need for walking, are inconvenient in practical applications for lightning protection through pile driving and grounding. With the continuous increase in the hoisting height of equipment, the height of large crane equipment is also increasing. The length of the main arm can even exceed 100 meters, and the design length of the auxiliary arm can also reach tens of meters, and most of the crane equipment operates in the open field, and there are no tall buildings that exceed the height of the crane equipment, so the probability of being struck by lightning is very high. Very easy to become the target of a direct lightning strike. When the crane is directly struck by lightning, the powerful lightning current flows through the crane, which w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/047
Inventor 王婧黄赞
Owner ZOOMLION HEAVY IND CO LTD