Bearing pulling device

Abstract

The invention discloses a bearing pulling device which comprises a hydraulic oil cylinder, a pulling head fixedly connected to a hydraulic rod of the hydraulic oil cylinder and a supporting base supported on a rotating shaft of a bearing. The supporting base is fixedly connected to a cylinder body of the hydraulic oil cylinder and arranged outside the pulling head in a sleeving mode. A gap used for containing the bearing is arranged between the pulling head and the supporting base. The pulling head comprises a support connected with the hydraulic rod, a rotary core shaft rotationally arrangedon the support and a shifting piece fixedly arranged at the bottom end of the rotary core shaft, the shifting piece can stretch out of the circumferential face of the support or retract into the circumferential face of the support along with rotation of the rotary core shaft. The bearing pulling device can improve pulling efficiency, reduce the pulling difficulty and avoid frequency vertical station operation of workers and is beneficial to physical and psychological health of workers when used for pulling the bearing.

Description

technical field [0001] The invention relates to the technical field of bearing drawing, in particular to a bearing drawing device. Background technique [0002] Large wind turbine bearings are key components of the generator. At present, the bearing is generally embedded in the inner ring of the rotating shaft by means of a shrink fit. When the generator is disassembled, the bearing is difficult to pull out from the inner ring of the rotating shaft. [0003] The traditional bearing removal method uses three hydraulic jacks with auxiliary tooling. However, pulling out the bearing requires the cooperation of three people, which has certain requirements on the operator's operating level, which will easily cause uneven force on the bearing, affect the life of the bearing, and sometimes even damage the bearing, and when the force on the bearing is uneven, the bearing is easy to get stuck The pulling out process is time-consuming and laborious; the bearing is placed on the inner...

AI Technical Summary

Problems solved by technology

However, pulling out the bearing requires the cooperation of three people, which has certain requirements on the operator's operating level, which will easily cause uneven force on the bearing, affect the life of the bearing, and sometimes even damage the bearing, and when the force on the bearing is uneven, the bearing is easy to get stuck The pulling out process is time-consuming and laborious; the bearing is placed on the inner ring of the rotating shaft, about 2 meters above the ground, and the operating station is on the middle flange of the rotating shaft. Workers need to go up and down frequently, which does not meet the ergonomic requirements; Pollution, poor workplace environment

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