The invention is related to a type of the container lifter which is able to lift two 4 feet containers at a time, it includes two sets of the crane main lifting mechanisms and the wire rope winding systems being separate, two cranes and drive cylinders, the pulleys arranged at the crane upper frame and the two lifting pulley groups arranged on the carrier. The first crane lifting mechanism and the second crane lifting mechanism are equipped with the barrel, the crane lifting mechanism motor, the brake and the crane lifting redection gear box respectively, the two sets of the crane lifting mechanism are synchronously operated, the approach and separation are achieved by the first crane and the second crane using the connection cylinder. The invention uses the two separate cranes, the functions of separation, differential in height, displacement, included angle and releasing of the two cranes are achieved by the cylinders, two 40 feet containers can be lifted, also the cylinders can be separated so that the separate operations of the two cranes can be obtained. By using the container lifter of the invention, the efficiency of the load and unload is increased, high repayment is obtained with less increasing the equipment cost, the larger beneficial result is occurred, also it has the wider applicable prospect.
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