Pulling-out tool for disassembling needle bearing in propeller blade

• Main Authors: LIU QIAN, FAN ZHANPENG, MENG JIAN, MAI HAIBO
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2021
• 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 utility model discloses a pull-out tool for dismounting a needle bearing in a propeller blade, which comprises a pull rod and a drawing head which is connected with the pull rod and can extend into the needle bearing, the drawing head is mainly composed of a taper sleeve connected to the bottom of the pull rod and a plurality of semi-ring type wedge blocks surrounding the periphery of the taper sleeve through a shaping ring, the bottom of each wedge block is provided with a clamping boss formed through outward folding, and an inner hole of each wedge block is provided with a taper hole section for axial displacement of the taper sleeve. When the taper sleeve moves downwards in the inner hole of each wedge block in the axial direction, the bottom of each wedge block can stretch into the needle bearing, and when the taper sleeve moves upwards in the inner hole of each wedge block in the axial direction, each wedge block can be expanded to generate diameter increasing deformation. In the whole dismounting pr