| 摘要 |
PURPOSE: A two-motor hoist crane is provided to continue a traveling, a traversing, and a hoisting driving of a crane by rotating an output shaft by driving a second motor when a malfunction happens in a first motor and the first motor is stopped among the first motor and the second motor equipped in a traveling motor, a traversing motor, and a hoisting motor. CONSTITUTION: A two-motor hoist crane comprises a pair of race rails, a girder, a traveling motor (100), and a hoisting motor. The traveling motor, a traversing motor, and the hoisting motor comprise a first motor (110) in which a first motor shaft (112) is equipped, and a second motor (120) in which a second motor shaft (122) is equipped. The first motor shaft and the second motor shaft are connected to one output shaft (130). In normal times, a rotation power of the first motor is delivered to the output shaft, and the second motor is stopped. When a malfunction happens in the first motor, the first motor is stopped, and the second motor is driven, and a power transmission (140) is connected to the first motor shaft, the second motor shaft, and the output shaft in order to deliver a rotation power of the second motor shaft to the output shaft. |
