Central rotary catch rock machine by the grab, lifting mechanism, slewing, luffing mechanism, support systems and chassis and other components. Grab the grip sheet, rod, lug plate cylinder and with valves and other components. The lower end of the piston rod is hinged claw grab rock Jiangxi center rotary machine, waist hole through the hinge rod and lug plate. Central rotary catch rock machine: grab rock machine host installation, you should first hanging plate placed under a certain distance from the center of rotation Face grasp rock machine, the HZ-4 type, HZ-6 model from the Face of 4 ~ 5m at HZ-10-type is 7 ~ 8m at the central rotary catch rock machine company, and then put the rock face in the center of the rotary machine how much money grab at the host, the host standing up slowly, so that the lower slewing ring seat aligned with the two beams hanging plate on. After the alignment of the mounting position with L-type or U-type screw Gui fixed, so that the host and the hanging plate girder piece.