The invention discloses a variable-frequency hoisting mechanism and a tower crane. The variable-frequency hoisting mechanism comprises two variable frequency motors, two reducers, a winding drum, a hoisting detection unit, and a gear shifting controller, wherein the two variable frequency motors comprise a first motor and a first frequency converter for controlling the first motor, a second motorand a second frequency converter for controlling the second motor; the two reducers comprise a speed change mechanism which is connected with an output end of the first motor and has a first adjustable reduction ratio, and the speed change mechanism which is connected with the output end of the second motor and has a second adjustable reduction ratio; the winding drum is connected with the two reducers and commonly driven by the two reducers so as to drive the load to hoist or fall; the hoisting detection unit is used for detecting a measurement value of the load; and the gear shifting controller is used for controlling the speed change mechanism with the first adjustable reduction ratio and the speed change mechanism with the second adjustable reduction ratio based on the measurement value of the load to adjust the reduction ratio.
本发明公开了一种变频起升机构及塔机。其中,该变频起升机构包括:双变频电机,所述双变频电机包括:第一电机及控制所述第一电机的第一变频器、第二电机及控制所述第二电机的第二变频器;双减速机,所述双减速机包括:连接于所述第一电机的输出端的第一可调节减速比的变速机构、连接于所述第二电机的输出端的第二可调节减速比的变速机构;卷筒,连接所述双减速机,由所述双减速机共同驱动,以带动负载起升或者降落;吊重检测单元,用于检测所述负载的测量值;换挡控制器,用于基于所述负载的测量值控制所述第一可调节减速比的变速机构和所述第二可调节减速比的变速机构调节减速比。
Variable-frequency hoisting mechanism and tower crane
变频起升机构及塔机
2020-04-21
Patent
Elektronische Ressource
Chinesisch
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