Operation device related to digging pile mechanical hole forming and construction method of operation device

The invention relates to the technical field of in place concrete pouring of piles or similar concrete piles, in particular to an operation device related to digging pile mechanical hole forming and a construction method of the operation device. A center operation platform comprises an upper steel plate, a lower steel plate, protective plates and channel-section steel which is arranged between the upper steel plate and the lower steel plate which are parallel. A screw penetrates through the upper steel plate, the lower steel plate and the channel-section steel and is fixed, and thus the center operation platform is formed. The center operation platform is square. The protective plates rotating round the edges axially are connected to the fours edges of the center operation platform correspondingly. The construction method of digging pile mechanical hole forming comprises the steps of point stake-out, fore shaft construction, rotary drilling rig drilling and hole forming, protective wall concrete construction