Abstract: A rail wheel set for a car which can be moved on a rail of a rail system has a bearing housing with a radial suspension for connecting the rail wheel set to the car, and two running wheels which are rotatably mounted on the bearing housing. Each wheel has a respective rail rolling surface, the shape of which is adapted to the contour of a running surface of the rail, and a respective ground rolling surface. The wheels can roll independently of each other on the running surface of the rail or on the ground. The rail wheel set is secured to a chassis of a car for transporting objects on a rail system.

Abstract: A rail system includes carrier profiles open in the upward direction, a rail inserted in the carrier profiles with a gap therebetween, and clamping profiles which lie in the gap are in contact with an inner contact surface of the rail and partially overlap the rail, one upper part of the carrier profile expanding laterally downward to an undercut cross-sectional region, bounded by opposite upper side wall sections, inclined inwardly or curved concavely, and at least one part of the clamping profile tapers downward in wedge fashion and is bounded in the direction of the rail by the inner contact surface and in the direction of the side wall by an outer contact surface, which lies in contact with the corresponding upper side wall section, the at least one part being fitted into an appropriately shaped part of the gap within the undercut cross-sectional region of the carrier profile.

Abstract: A rail system includes carrier profiles open in the upward direction, a rail inserted in the carrier profiles with a gap therebetween, and clamping profiles which lie in the gap, are in contact with an inner contact surface of the rail and partially overlap the rail, one upper part of the carrier profile expanding laterally downward to an undercut cross-sectional region, bounded by opposite upper side wall sections, inclined inwardly or curved concavely, and at least one part of the clamping profile tapers downward in wedge fashion and is bounded by the direction of the rail by the inner contact surface and in the direction of the side wall by an outer contact surface, which lies in contact with the corresponding upper side wall section, the at least one part being fitted into an appropriately shaped part of the gap within the undercut cross-sectional region of the carrier profile.