LIFTING DEVICE FOR ASSEMBLING-DISMANTLING SECTIONS OF POWERED SUPPORT Russian patent published in 1996 - IPC

FIELD: mining. SUBSTANCE: lifting device for assembling-dismantling a section of powered support includes two props with movable and immovable parts interconnected through hydraulic cylinders placed inside the props, swinging columns with cargo boom provided with a clamp, rising mechanism and control panel. Prop upper ends are interrelated through crosswise beam. Vertical slot is originated at immovable part of one prop to orient movable part ledge related to the same right-hand frame prop coupled to cargo boom clamp through swinging column. Movable part of other prop relates to cargo clamp through pulley block system. One pulley of the system is secured to the crosswise beam. EFFECT: higher reliability. 3 dwg