浅谈桥门式起重机起升双限位开关

打开文本图片集

摘要：为有效防止冲顶事故，桥（门）式起重机安装有两种不同形式的高度限位装置。文中通过对检验时遇到的一台地面操作的电动单梁起升机构高度限位器的研究，探讨两种高度限位器的分断回路、动作顺序并分析其原因。进一步针对地面操作不方便验证开关有效性的问题，提出解决方案，具有一定的工程应用价值和参考意义。

关键词：桥（门）式起重机；高度限位装置；地面操作；旁路

Analysis of Double Height Limitators of Bridge and Gantry Crane

ZHANG Dongxu

（Fujian Special Equipment Inspection and Research Institute， Fuzhou 350008， Fujian， China）

Abstract： In order to effectively prevent the hoist collision accident， bridge and gantry cranes are required to install two different type height limitators. Based on the study of a ground-operated height limiter of electric single-beam hoisting mechanism， the breaking circuit and action sequence of the two types of height limiter are discussed and the reasons are analyzed.In view of the problem that the ground operation is not easy to verify the effectiveness of the limitator， solutions are proposed， which have certain engineering application value and reference significance.

Key Words： Bridge and gantry crane; Height limitator; Ground operation; Bypass

0引言

众所周知，起重机冲顶是严重的安全事故，将带来无法估计的损失。（剩余3469字）