Self-locking direct-current motor and a transmission device of logging instrument

• Main Authors: LIAO SHENGJUN, FENG YONGREN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2013
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The utility model relates to a self-locking direct-current motor, which comprises a motor and a self-locking device. The motor contains a shell and a motor shaft. The self-locking device contains a damping plate, a tubular cover body with one open end and at least three damping devices which are uniformly distributed between the bottom of the cover body and one side of the damping plate. The open end of the cover body is buckled on the shell of the motor. The other side of the damping plate is fixedly connected with the motor shaft of the motor. Each damping device comprises a compressed spring and a damping block. One end of the compressed spring is fixedly connected with the bottom of the cover body, and the other end is fixedly connected with one end of the damping block. The other end of the damping block forms surface contact with the damping plate. When the motor is powering off, the self-locking device provided by the utility model can greatly lock reverse torque on the motor shaft, has both functions