起重机总电源安全合闸电路的小型设计  

Small-Size Design of Safety Circuits for Closing Main Power Switches of Cranes

作　　者：章凡杰[1] 

机构地区：[1]中国石油化工集团公司安全工程研究院,山东青岛266071

出　　处：《低压电器》2004年第10期52-54,共3页Low Voltage Apparatus

摘　　要：如果一台起重机中的接触器触头发生熔焊 ,在总电源开关合闸时 ,这台起重机的电动机就会突然起动 ,就可能发生意外碰撞事故。为了避免这种危险的发生 ,国外已经采用称为汉堡电路的安全合闸电路。本文参照汉堡电路的原理 ,设计 2个体积小型化的起重机安全合闸电路。该设计减少了电路中继电器的数量 ,缩小了电路的安装空间 ,有利于安全合闸电路在大型起重机上的应用。If contacts of some contactor to start a motor are soldered fusing in a crane, the crane will suddenly be started at time of closing the main power switch. In order to avoid this dangerous case a safety closing circuit, named Hamburg Circuit, is used at abroad already. Two small-size designs of safety closing circuits according to principle of Hamburg Circuit were presented here. The number of relays in the circuit and the space to install can be reduced in this small-size design, so that safety closing circuits can be used well in large cranes.

关 键 词：合闸 电路 触头 电动机 接触器 开关 继电器 起重机 总电源 小型 

分 类 号：TM561[电气工程—电器] TH21[机械工程—机械制造及自动化]