Screw active propulsion capsule-like robot

The utility model provides a screw active propulsion capsule-like robot which comprises a front cover, a controller, a sensor, a battery holder, a battery, a driving motor, a housing, a seal ring, a rear cover, a flexible coupler and a propulsion screw rod. The connection relation is that the driving motor is nested in the front cavity of the housing; the battery is positioned in the battery holder, one end of the battery is in contact with the driving motor, and the other of the battery is in contact with the battery holder; the bottom of the battery holder is in contact with the controller and the sensor; the front cover is nested at one end of the housing and enables the controller, the sensor, the battery holder, the battery and the driving motor to be closed in the front cavity of the housing; the seal ring is arranged in the rear cavity of the housing; the rear cover is arranged at the other end of the housing in an interference fit or threaded fit way to form a back cavity with the housing; and one end of the flexible coupler is connected with the motor shaft of the driving motor in a tightening way, and the other end of the flexible coupler is connected with the handle end of the propulsion screw rod. The screw active propulsion capsule-like robot provided by the utility model has good exercise performance, high drive efficiency, reliability, and practicability, and is suitable for flexible and elastic organ wall environments.