The invention discloses a heavy-load-type container reach
stacker crane. A suspension arm comprises a rotating arm, an upper lift arm and a lower lift arm; the front ends of the upper lift arm and the lower lift arm are provided with clamping devices; a suspension arm lift mechanism comprises front and rear connecting rod assemblies which are symmetrically arranged at two sides of the suspension arm; the front connecting rod
assembly is a five-connecting-rod mechanism arranged below the front part of the suspension arm and comprises front rocker rods, front connecting rods, middle connecting rods and middle rocker rods; the rear connecting rod
assembly is arranged behind the suspension arm and comprises rear rocker rods and rear connecting rods; drives of the front rocker rods and the rear rocker rods are both conventional high-power motors correspondingly arranged on a
carriage; drives of the middle rocker rods are low-power
servo motors correspondingly arranged on the
carriage. According to the invention, the strategy that the high-power conventional motor and the low-power
servo motors are used for
hybrid driving is adopted, compared with the mode of pure
servo motors or hydraulic driving, the heavy-load-type container reach
stacker crane has greater
power output, higher reliability and larger
working space; meanwhile, the whole crane is low in manufacturing cos, and is low in maintaining cost.