Sinking platform in-well hanging equipment and method

The invention discloses sinking platform in-well hanging equipment and method. The equipment comprises stabilizing ropes, an upper-layer platform, a lower-layer platform and a sinking work plate, the lower ends of the stabilizing ropes are connected with the upper-layer platform which is connected with the lower-layer platform through a steel wire rope hanging device, the sinking work plate is arranged at the bottom of the lower-layer platform, horizontal inserting and connecting devices are arranged at the outer edges of the upper-layer platform and the lower-layer platform, and a plurality of layers of beam sumps or annular grooves matched with the horizontal inserting and connecting devices are arranged along the vertical direction on the well walls. The sinking platform in-well hanging equipment integrates advantages of steel wire rope hanging of conventional platforms and beam-sump-type supporting of walking platforms, sinking platform in-well hanging without a ground sinking winch is realized, the problem that the sinking platform is difficult in hanging and inconvenient to move during existing deep vertical shaft construction are solved, and quickness, reliability and high efficiency in deep vertical shaft construction are realized.