Sleeve type cutting tooth puller of rotary drilling rig and application method of sleeve type cutting tooth puller

• Main Authors: FENG ZUO, JIANG WEI, HU XUEGUO, MAO YUANFU, SHEN XIA
• Format: Patent
• Language: Chinese; English
• Published: 04.05.2016
• Subjects: HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING

A sleeve type cutting tooth puller of a rotary drilling rig comprises an inner pulling sleeve (3) and an outer stressed sleeve (4) and is characterized in that the inner pulling sleeve (3) is a steel pipe I, a wedge-shaped opening is formed in one end of the steel pipe I, the other end of the steel pipe I is closed through welding, a screw (2) is welded on the end surface of the closed end of the steel pipe I, and a semi-circular snap ring (5) is welded at an end of the wedge-shaped opening; the outer stressed sleeve (4) is a steel pipe II, one end of the steel pipe II is open, the other end is closed through welding by a steel plate, and a through hole (6) is formed in the center of the steel plate; the inner pulling sleeve (3) can be nested in from the open end of the outer stressed sleeve (4) with the screw (2) as the front end, and the screw (2) penetrates the through hole (6) and is tightly locked by a nut (1). The sleeve type cutting tooth puller of the rotary drilling rig and an application method of t