Locking pressure is bound and is put

The utility model discloses a locking pressure is bound and is put, including gland, pressure bowl, thick wall seamless steel pipe, butterfly spring group and steel sheet, steel sheet limiting grooveportion pegs graft there is the steel sheet, inside the pegging graft of thick wall seamless steel pipe has the bowl of pressure, press the center department welding of bowl lower surface to have thesuspended core, the inner chamber has been formed between suspended core and the thick wall seamless steel pipe, inside the pegging graft of inner chamber has butterfly spring group, gland limiting groove portion pegs graft there is the gland, gland axle center department has seted up the mounting hole, gland and steel sheet have formed the weld bond with thick wall seamless steel pipe inner wallrespectively, the inside even welding of weld bond has the welding seam, thick wall seamless steel pipe pass through the welding seam respectively with gland and steel sheet fixed connection, a plurality of butterfly springs gr