DEVICE FOR TRANSPORTATION OF LOADS UP/DOWN FLIGHTS OF STAIRS

摘要

FIELD: transport engineering. ^ SUBSTANCE: invention relates to trolleys for moving loads up/down stairs provided with tires with inner supports. Cross bushing 16 coupled with rim 17 of tire 15 is arranged inside pneumatic tire. Shafts 18 are arranged on ends of bushing on axial rods 19. When moving up the stairs, air is discharged from tires 15 make shafts 18 engage with stairs steps through tire 15. Trolley has vertical and horizontal frames rigidly connected to each other, movable frame, axles installed on horizontal and movable frames, running gears installed on axles. Movable frame is hinge-connected with horizontal frame. Screw mechanism is installed between horizontal and movable frames to fold device by bringing front and rear axles close to each other and returning them into operating conditions by moving front and rear axles from each other. Folded up condition is used to turn device by means of swivel wheel with handle. ^ EFFECT: provision of transportation of heavy loads along even surface and up and down the stairs at confined space for turning on stairs landings. ^ 6 dwg