船舶的操舵装置,由于水对舵的冲击作用,通常要承受很大的负荷,因为舵与舵柄是直接连接的,传递给舵柄的负荷,必须靠舵手反转手轮的力量加以克服。值得重视的是:以前设计的舵的液压控制能使舵柄的动作传给舵,以阻止强加于舵的反向负荷传给舵柄。但是,这种控制设备基本上都要用电动或手动的阀,所以结构比较复杂, The steering gear of a ship usually has a large load due to its impact on the rudder because the rudder and the tiller are directly connected and the load transmitted to the tiller must be overcome by the strength of the steering wheel reversing handwheel. It is worth noting that the hydraulic control of a previously designed rudder can transmit tiller motion to the rudder to prevent the reverse load imposed on the rudder from being transmitted to the tiller. However, this kind of control equipment basically needs the electric or manual valve, so the structure is more complex,