Carrying supporting system used for barrel equipment and supporting frame unit thereof

The invention provides a carrying supporting system used for barrel equipment and a supporting frame unit thereof. The carrying supporting frame comprises a main supporting wheel, a wheel frame, a steering shaft, a steering mechanism, a steering mechanism body, an inner barrel, a screw, a nut, a supporting outer barrel, a carrying arm and a handle. According to the invention, firstly, the carrying arm adopts an integrated design of two interfaces, and can be compatible with two working conditions of carrying barrel equipment and the supporting frame unit of the barrel equipment; secondly, the steering mechanism is provided with a clutch, a worm wheel and a worm transmission pair, so that various steering carrying modes such as direct movement, in-situ rotation, 90-degree transverse movement, diagonal movement and the like of the whole system are realized; thirdly, a lifting mechanism adopts a transmission pair structure of trapezoidal threads and bevel gear wheels, so that the lifting mechanism can drive load