Fluviograph installing support safety folding ladder

The utility model relates to a fluviograph installing support safety folding ladder, its characterized in that: by weld vertical ladder frame I on the mobile jib post of fluviograph installing support, along the multistage stile of vertical ladder I length direction interval articulated on the frame, with the other end of multistage stile respectively the vertical ladder frame of articulated II, weld in the U -shaped horizontal support of fluviograph installing support platform bottom and with vertical II top sliding connection's on the ladder frame sliding guide, be used for the locating part of vertical ladder frame I and vertical ladder frame II to constitute, sliding guide is circular -arcly, and sliding guide's arc core equals that the stile of top is spacing in sliding guide with the articulated shaft of vertical ladder frame II to the length between the both ends pin joint of the distance of guide rail central line and stile. It can receive and release in a flexible way, and safety and stability during