Adjustable mobile drum and multi-axle vehicle driving test bench using same

An adjustable mobile drum and a multi-axle vehicle driving test bench using the same relate to the field of motor vehicle detection equipment, and comprise a drum body, a support frame, a connecting frame arranged on the upper side of the support frame in a sliding manner, and a driving unit capable of driving the connecting frame to slide, the driving unit comprises a plurality of transmission rods arranged side by side in the sliding direction of the connecting frame and a power source capable of driving the transmission rods to rotate synchronously through a transmission module, the transmission rods are spirally connected with the connecting frame, the transmission module comprises a plurality of commutators, and the input ends of the commutators are all in transmission connection with the power source. And the output end is in transmission connection with the plurality of transmission rods. According to the utility model, through the transmission rod and the driving unit, the sliding self-locking perform