连续卸船机的机头保护系统对保证船舶和卸船机的安全十分重要,青岛港1600t/h 斗轮式连续卸船机采用一种新型的液压保护系统。本文确定了为保证该系统正常工作取料头与垂臂合适的相对位置;根据机头保护的要求,推导了一些计算系统内开关量和设定量的公式,并以为青岛港设计的斗轮式连续卸船机为例计算了有关量值。 Continuous head unloader nose protection system to ensure the safety of ships and unloader is very important, Qingdao Port 1600t / h bucket wheel continuous ship unloader using a new type of hydraulic protection system. In this paper, the proper relative positions of the pick-up head and the drop-arm are determined to ensure the normal operation of the system. According to the requirements of head protection, some formulas for calculating the switch quantity and setting quantity are deduced. Continuous ship unloader as an example to calculate the relevant value.