A cylinder is included that has a plurality of tracks integrated into the cylinder. A drive unit is integrated into the cylinder and the drive unit has a pair of drive wheels that each engages the crane track. The drive unit rotates each of the drive wheels in a first direction or a second direction. A carriage extends around the cylinder and a plurality of rollers is each rotatably coupled to the carriage. Each of the rollers engages a respective one of the tracks on the cylinder thereby facilitating the carriage to travel along the cylinder. A transport unit is integrated into the carriage and the transport unit engages the cylinder. The transport unit is actuatable to urge the carriage to travel along the cylinder in either a primary direction or a secondary direction.

A bridge crane assembly includes a crane track that is positioned in a warehouse. A cylinder is included that has a plurality of tracks integrated into the cylinder. A drive unit is integrated into the cylinder and the drive unit has a pair of drive wheels that each engages the crane track. The drive unit rotates each of the drive wheels in a first direction or a second direction. A carriage extends around the cylinder and a plurality of rollers is each rotatably coupled to the carriage. Each of the rollers engages a respective one of the tracks on the cylinder thereby facilitating the carriage to travel along the cylinder. A transport unit is integrated into the carriage and the transport unit engages the cylinder. The transport unit is actuatable to urge the carriage to travel along the cylinder in either a primary direction or a secondary direction.

A bridge crane assembly includes a crane track that is positioned in a warehouse. A cylinder is included that has a plurality of tracks integrated into the cylinder. A drive unit is integrated into the cylinder and the drive unit has a pair of drive wheels that each engages the crane track. The drive unit rotates each of the drive wheels in a first direction or a second direction. A carriage extends around the cylinder and a plurality of rollers is each rotatably coupled to the carriage. Each of the rollers engages a respective one of the tracks on the cylinder thereby facilitating the carriage to travel along the cylinder. A transport unit is integrated into the carriage and the transport unit engages the cylinder. The transport unit is actuatable to urge the carriage to travel along the cylinder in either a primary direction or a secondary direction.

An overload brake and method for trolley suspended on a flange of a load traveling apparatus girder prevents the displacement movement of a suspended load along a girder by clamping a brake between two symmetrical flange tabs of the girder. The girder is elastically deformed by the load which is applied to the girder by the contact between a surface of the girder and translation wheels that move the load along the girder. Upon sufficient elastic deformation, portions of the girder contact a brake to prevent movement of the load along the girder.