LOAD-LIFTING AND TRANSPORTATION DEVICE Russian patent published in 2002 - IPC

FIELD: railway transport. SUBSTANCE: invention can be used for repair of rail tracks. Device has carrying beam, load-gripping member and load truck coupled by flexible tie with lifting drive of load-gripping member. According to first design version, lifting drive is made in form of cluster of different-size sprockets installed on carrying beam motionlessly relative to each other on common axle of said drive equipped with drive handle and brake. Travel-motion drive installed on truck is furnished with gear pair whose driven gear is installed on one axle to form common unit with load truck sprocket getting into meshing with drive gear with handwheel. Flexible tie engages with larger diameter sprocket of lifting drive bending around sprocket of load truck, roller of load-gripping member, support roller of load truck, leading member, smaller diameter sprocket of lifting drive and, forming a free loop, passes roller providing guaranteed engagement of said tie with larger diameter sprocket of lifting drive. According to second design version, lifting drive is made in form of assembly of different-size drums installed on carrying beam on common axle of said drive equipped with drive handle and brake. Travel-motion drive of load truck in said version has gear pair whose driven gear is installed on common axle with drum of load truck forming a common unit and it comes into meshing with drive gear with handwheel. Flexible tie is connected to different size drum assembly of lifting drive forming opposite hand of helix and it passes over support roller of load truck, roller of load-gripping member, and drum of load truck forming angle of contact not smaller than 270^°, and leading member. EFFECT: simplified design, reduced metal usage. 3 cl, 2 dwg