First home made variable - frequency speed regulating system for main hook of heavy tower crane is depicted and test data are analyzed. Higher efficiency could be obtained and reliability of load moment limiter would ...First home made variable - frequency speed regulating system for main hook of heavy tower crane is depicted and test data are analyzed. Higher efficiency could be obtained and reliability of load moment limiter would be improved by applying the system.展开更多
文摘First home made variable - frequency speed regulating system for main hook of heavy tower crane is depicted and test data are analyzed. Higher efficiency could be obtained and reliability of load moment limiter would be improved by applying the system.