Special device for upside-down mounting of coupling bolt tensioner of large water-turbine generator set

The utility model discloses a special device for inversely installing a coupling bolt tensioner of a large water-turbine generator set. The special device comprises an upper supporting plate and a lower supporting plate, the upper supporting plate and the lower supporting plate are connected through a guide chain; during use, the upper supporting plate is in supporting connection with a central air supplementing pipe, and the lower supporting plate lifts the tensioner to mount a coupling bolt; the device solves the problems of longer construction period, higher maintenance cost and higher safety risk in the prior art, and has the characteristics that the structure is simple, the use is convenient, the safety can be effectively ensured, the construction period is shortened, the working efficiency is improved, and the maintenance cost is reduced. 本实用新型公开了一种大型水轮发电机组联轴螺栓拉伸器倒装专用装置，包括上支撑板和下支撑板；上支撑板和下支撑板之间通过导链连接；使用时，将上支撑板与中心补气管支撑连接，下支撑板吊起拉伸器对联轴螺栓进行安装；该装置解决了现有技术所需工期较长、检修成本较高、安全风险较大的问题，具有结构简单、使用方便，可有效保证安全性，并且节省工期、提高工作