目前,水库和水电站闸门所用的高度指示器,有许多形式。诸如机械链条式、机械蜗轮付式、光电式、限位开关式、自整角机式等。其中以机械链条式和蜗轮付式为最多。上述各式高度指示器,为适应水利闸门的工作条件和要求,既能迅速、可靠地工作,准确地指示高度,又要便于安装维护,投资少,这确实是难以兼顾的。尤其作为现在国内正式设计,配套在启闭机上的机械式 At present, there are many forms of height indicators used in the gates of reservoirs and hydropower stations. Such as mechanical chain, mechanical worm pay, photoelectric, limit switch, self-policing machine and so on. Among them, mechanical chain type and worm gear type are the most. In order to adapt to the working conditions and requirements of the water gate, the above-mentioned various height indicators not only can work quickly and reliably, accurately indicate the height, but also facilitate the installation and maintenance with less investment, which is indeed difficult to balance. In particular, as the official design now, supporting the hoist mechanical