Compartment rotating mechanism for testing derrick truck

The utility model provides a test derrick truck carriage rotating mechanism, which is characterized in that an auxiliary frame is arranged on a chassis main girder of a test truck body, a rotating support mechanism is arranged on the auxiliary frame, and a carriage body is arranged on the rotating support mechanism; the rotating supporting mechanism comprises a rotating assembly used for driving the carriage body to rotate and a supporting assembly used for supporting the carriage body, the rotating assembly comprises a worm arranged on the auxiliary frame and a worm wheel arranged on the lower portion of the carriage body and matched with the worm, and a driving piece used for driving the worm to rotate is arranged on the auxiliary frame. The angle of the carriage can be conveniently and rapidly adjusted through the rotary supporting mechanism, the rope outlet space of a winch drum is greatly increased, the width size range of the drum is enlarged, the operation depth of a test well is increased, and the dev