Use method of cover pullout mechanism

Abstract

The invention discloses a method for using a cover pulling mechanism, which includes the following steps: manually digging out the temporarily sealed withdrawal groove on the side wall of the oil seal; placing the U-shaped groove of the supporting base on the end face of the bearing, The distance from the bottom of the U-shaped groove is to move the extraction rod in the hollow connecting cylinder, so that the snap-in plate at the end of the extraction rod directly contacts the inner wall of the oil seal through the withdrawal groove; through the connection between the external thread and the inner wall of the connecting cylinder The threaded fit will fix the pull-out rod in the connecting cylinder; manually use a wrench or other pneumatic equipment to start to rotate the screw nut on the connecting cylinder, so that the connecting cylinder moves upwards after being threaded with it in the through hole until the oil seal is completely pulled out. The invention can realize the detachment and connection between various parts, and for various types of bearings, the extraction rod can still accurately contact the inner wall of the oil seal through the withdrawal groove, which improves the applicability of the invention.

Description

technical field [0001] The invention relates to an LL type oil seal, in particular to a method for using a cover pulling mechanism. Background technique [0002] The LL type oil seal is used for the sealing of the 353130B compact bearing, which can achieve the purpose of making the short shaft of the 353130B compact bearing less prone to bending and increasing the service life. Abrasive particles invade the bearing, which also makes the bearing have good sealing performance and improves the service life of the grease in the bearing. [0003] However, during the long-term operation of the locomotive, in order to ensure the stable operation of the locomotive, it is necessary to detect and replace the LL-type oil seal in time and regularly. During the replacement process of the LL-type oil seal, the temporarily sealed oil seal unloading groove is usually opened. Then use tools such as pliers to pull the oil seal out of the bearing. Since the press-fitting of the LL-type oil se...

AI Technical Summary

Problems solved by technology

[0003] However, during the long-term operation of the locomotive, in order to ensure the stable operation of the locomotive, it is necessary to detect and replace the LL-type oil seal in time and regularly. During the replacement process of the LL-type oil seal, the temporarily sealed oil seal unloading groove is usually opened. Then use tools such as pliers to pull the oil seal out of the bearing. Since the press-fitting of the LL-type oil seal is realized through a hydraulic press-fitting mold, the oil seal is tightly attached to the bearing. Manual operation requires a large amount of labor and increases the workload of the workers. , and the efficiency is low; another solution is to use large-scale precise automatic extraction equipment, but this method is expensive and unacceptable to ordinary enterprises

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