Advanced support supporting device

The invention discloses an advanced support supporting device, belongs to the technical field of advanced supporting for coal mining and provides a gate type advanced support supporting device combining beams and columns. The device is convenient and safe to use, improves the work efficiency and saves labor force. According to the adopted technical scheme, the two telescopic stand columns and two ends of the girder are fixedly connected to form a gate type structure, the upper ends of the stand columns are fixedly connected with the girder, bottom shoes are fixedly installed at the bottom ends of the stand columns, the girder and the telescopic beam are hollow cylinders, the telescopic beam is installed in the girder in a sleeved mode, the end of a cylinder body of a telescopic oil cylinder is hinged to the inner wall of the girder, the end of a piston rod of the telescopic oil cylinder extends into the telescopic beam and is hinged to the inner wall of the telescopic beam, a side protecting plate is hinged to one end, opposite to the extending direction of the telescopic oil cylinder, of the girder, the middle of the side protecting plate is connected with the girder through a supporting oil cylinder, a rail-mounted support connecting vehicle is movably installed below the girder. The advanced support supporting device is mainly used for being installed in coal mine tunnels to achieve advanced supporting.