ACCESSORIES FOR MOVING HAND TRUCK ALONG LADDER STEPS Russian patent published in 2019 - IPC B62B5/02 

FIELD: machine building.

SUBSTANCE: invention relates to the field of engineering, in particular to loading devices. Device for moving a hand truck along the ladder steps contains a handle, a luggage platform, two wheels and a supporting part. With the supporting part of the truck pivotally connected lift part. Lift part has on one of its two pivotally connected to the supporting part of the truck ends rigidly planted gear wheel of a smaller radius and a lever of the first kind. Gear wheel of smaller radius is located coaxially to the hinged connection of the lift part with the supporting part of the truck. Lever of the first kind is rigidly connected with the gear wheel of a larger radius. Axis of rotation of the lever is also the axis of rotation of the gear wheel of a larger radius. Gear wheel of a larger radius has the ability to perform a kinematic connection with a gear wheel of a smaller radius, located at the end of the lift part. Axis of rotation of the part of the lift and lever parallel to the axis of rotation of the wheels of the truck.

EFFECT: simplified lifting of loaded hand truck along stairs.

1 cl, 4 dwg