A transport trolley (CT) comprises: a pair of legs (J1) each having a lower end to which there is coupled a plate (PT1) on which at least one wheel (R1) is mounted so as to rotate in a transverse direction, first load supporting means (S1) coupled to the lower ends of the legs (J1), first coupling means (MC1) on which the lower ends of the legs (J1) are mounted so as to rotate in the transverse direction such that they can move from a folded-out position to a folded-away position, and on which the plates (PT1) are mounted so as to rotate such that wheels (R1) thereof can pivot and move from a folded-out position to a folded-away position approximately parallel to the folded-away legs (J1), and second coupling means (MC2) designed to force the legs (J1) and the wheels (R1) to be substantially simultaneously either in their folded-away position or in their folded-out position.