Fishtail center cutter for shield tunneling machine

• Main Authors: ZANG CHUANQING, ZHU BAOJUN, SU LEI, LEI WEIBO, ZHAO HE, ZHANG HAO, SUN HAINAN, AI CONGYANG, MENG XIANGJUN, CUI JIAQI, PANG QIANG, MIAO CHONG
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: BLASTING; EARTH DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GALLERIES; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LARGE UNDERGROUND CHAMBERS; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; MINING; SHAFTS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TUNNELS; WEAPONS

The utility model discloses a fishtail center cutter for a shield tunneling machine, which belongs to the field of shield tunneling machines and comprises a cutter holder, a cutter body, a connecting piece and an elastic buffer component, the cutter body is arranged on one side of the cutter holder, and a mounting surface is formed on the other side of the cutter holder; a first mounting hole is formed in the tool apron, a second mounting hole is formed in a cutterhead of the shield tunneling machine, and the connecting piece penetrates through the first mounting hole and the second mounting hole to connect the tool apron and the cutterhead; and the elastic buffer assembly is arranged on the mounting surface and can be clamped between the tool apron and the cutterhead. When the cutter body touches hard objects such as rocks, due to the buffering effect of the elastic buffering assembly, the cutter body generates a certain buffering stroke, the impact force borne by the cutter body is relieved, the tipping pro