Pin pulling device

• Main Authors: HOU FENGTAO, FAN LEIFANG, LU YAO, KANG SHAOBO, WAN ZHONG, LI WEI, NAN TENGFEI, HU CHAOYUE, LIU XIA
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2017
• Subjects: HAND TOOLS; MANIPULATORS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING; TRANSPORTING

The invention discloses a pin pulling device which is used for solving the technical problem that safety of an existing pin pulling device is poor. According to the technical scheme adopted by the invention, the pin pulling device comprises a pin pulling head, a fixed wrench, a pin pulling rod, a rotary wrench and a sleeve, wherein a square shaft at the upper end of the pin pulling rod is connected with a square slot of the fixed wrench in a matched mode; the rotary wrench is in threaded connection with a threaded rod at the lower end of a second threaded hole; coarse-axis threads on the pin pulling head are in threaded connection with a first threaded hole in the bottom end of the pin pulling rod; and a through hole in the upper end of the sleeve sleeves the pin pulling rod. During pin pulling, the pin pulling head is in threaded connection with a pin, the lower end surface of the sleeve abuts against the surface of part, the pin pulling rod is blocked by holding the fixed wrench, the rotary wrench is contin