Electric motor auxiliary or retrofit drive for self-stabilizing moving vehicles, in particular mobility aids for people with
reduced mobility, such as wheelchairs or walkers, and pushed or pulled transport trolleys for goods transport, such as platform trolleys, transport carts, - with a platform that forms a standing surface for a person operating the vehicle, - with a
coupling component on the platform, which is designed to connect the platform to the vehicle, - with at least one
drive wheel located at the end of the platform furthest from the
coupling component, - with an
electric motor drive for the
drive wheel, - with a support as part of the
coupling device, which is connected to the platform via a first linkage device and to the vehicle via a second linkage device, - wherein the platform is designed to be positioned between a forward-facing position and a rear-facing position, characterized by the fact that - the carrier provides two movement paths - the first linkage device is movable along a first path of movement and the second linkage device is movable along the second path of movement in order to move the platform between a position located at the front in the direction of travel and a position located at the rear in the direction of travel.