岸边集装箱起重机起升机构制动器合理安全系数选定  

Selection of Reasonable Safety Factor of Lifting Mechanism Brake of Quayside Container Crane

作　　者：何强国 王宏军 何仁财 He Qiangguo;Wang Hongjun;He Rencai(Shanghai Zhenhua Heavy Industries Co.,Ltd.;Jiangxi Agricultural Technology Popularization Center)

机构地区：[1]上海振华重工(集团)股份有限公司,上海市200125 [2]江西省农业技术推广中心

出　　处：《港口装卸》2022年第6期8-10,共3页Port Operation

摘　　要：通过统计分析现场测试的紧急制动工况下起升机构减速器低速轴的冲击扭矩以及减速器的轴承失效分布状况,建立动力学模型计算分析,证实造成冲击扭矩过大的主要原因,即低速轴侧制动力矩设计偏大使得制动器闭合后系统的转动动能不能有效释放。以紧急制动工况为岸桥起升机构制动力矩设计的主要工况,结合相关国家标准,确定总的设计制动力矩应为额定载荷下静力矩的3倍,其分配方式为低速轴侧取1倍,高速轴侧取2倍,保证低速轴的冲击扭矩在减速器的额定输出扭矩范围内。Through statistical analysis of the impulsive torque of the low-speed shaft of the lifting mechanism decelerator and the bearing failure distribution of the decelerator under the emergency braking condition tested in the field,the dynamics model is established to confirm the main reasons of excessive impulsive torque,that is,the design of low speed axle side braking torque is skewed,so that the rotational kinetic energy of the system cannot be effectively released after the brake is closed.With emergency braking condition as the main braking torque design of quayside bridge lifting mechanism,combined with relevant national standards,it is determined that the total designed braking torque should be 3 times of the static moment under rated load,and the distribution mode is 1 times on the low speed shaft side and 2 times on the high speed shaft side to ensure that the impulsive torque of the low speed shaft is within the rated output torque range of the decelerator.

关 键 词：起升机构 减速器 轴承失效 冲击扭矩 制动力矩 

分 类 号：U653.921[交通运输工程—港口、海岸及近海工程]