Full-speed machine low-pressure rotor last-stage blade closed tie bar assembly tool and method

The invention discloses a full-speed machine low-pressure rotor last-stage blade closed lacing wire assembly tool and method, the full-speed machine low-pressure rotor last-stage blade closed lacing wire assembly tool comprises a first clamping piece and a second clamping piece which are matched with each other, and the second end of the first clamping piece and the second end of the second clamping piece are hinged together; the driving piece is arranged on the first clamping piece and the second clamping piece in a penetrating mode to drive the first clamping piece and the second clamping piece to move relatively so as to clamp or loosen the lacing wire. Compared with a tool used on site at present, the full-speed machine low-pressure rotor last-stage blade sealing lacing wire assembly tool enables one person to complete operation about 5 min (at least two persons are needed for the tool used on site at present, and operation at least needs 1 h), measurement of a welding gap between lacing wires is more con