Preceding calorie of formula hydraulic jack of a section of thick bamboo is supported in area

The utility model provides a preceding calorie of formula hydraulic jack of a section of thick bamboo is supported in area, includes hydro -cylinder, piston, a support section of thick bamboo, automated tool anchor subassembly, support section of thick bamboo rear end and hydro -cylinder front end inner wall threaded connection, front end are equipped with spacing backing plate and support a nut,are the bead structure in the middle of the piston, are provided with big end cap between a bead and the support section of thick bamboo, form between bead and the end cap to be the stretch -draw oilpocket, the hydro -cylinder rear end is equipped with the back closing plate and sticiss the ring after, forms the return stroke oil pocket between the bead of back closing plate and piston, and automated tool anchor subassembly sets up in piston inner hole, and it includes instrument anchor slab, instrument clamping piece, automated tool anchor clamp plate, top cover, return stroke cover, returnstroke cover clamp plate, a