Motor for coiled tubing and use method

The invention discloses a motor for a coiled tubing and a using method, the motor comprises an external shell and an internal transmission component installed in the external shell, the external shell is composed of a short section, a power shell, a winding shaft shell, a transmission shaft shell and an end sleeve which are in threaded connection in sequence; the internal transmission component is composed of a rotor, a winding shaft and a transmission shaft which are sequentially connected together in a threaded mode, a rubber stator corresponding to the rotor is fixedly installed in the power shell, an upper bushing is installed between a winding shaft shell and the winding shaft, a lower bushing is installed between an end sleeve and the transmission shaft, and the upper bushing and the lower bushing are in threaded connection. And a roller bearing assembly and an oil bath type bearing assembly are respectively arranged between the transmission shaft shell and the transmission shaft. The number of the stat