The reducer with safety device ratchet wheel and pawl for dual-drive metallurgic crane is applied on the la-dle crane, material box feeding crane , and magnetic crane in the metallurgy industry , as well as other overhead cranes ser-ving high-grade work in metallurgic plants .The reducer is designed to improve the height reliability of the double lifting mechanism, avoid any safety accident in case one drive is at fault .In addition, the sliding bearing is designed to provide better synchronism, higher efficiency and lower noise while the dual-drive is in operation.%带安全装置棘轮棘爪双驱动冶金起重机减速器应用于冶金企业的铸造起重机、料箱加料起重机、磁盘起重机和服务于冶金厂工作级别较高的其他桥式起重机。该减速器能够实现双起升机构高度可靠性，防止一个驱动发生故障时造成安全事故，滑动轴承设计使得双驱动工作时同步性更好，传动效率更高，噪声小。
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