Novel high-speed railway bearing rear stop structure

Abstract

The invention discloses a novel high-speed railway bearing rear stop structure. The novel high-speed railway bearing rear stop structure comprises a rear stop, a shaft box and a gasket. The novel high-speed railway bearing rear stop structure is characterized that the rear stop is of an integrated lateral horizontal Chinese-character "mountain" shaped circular ring structure formed by a cylindrical connecting sleeve, a labyrinth type sealing groove and a sealing ring, and the rear stop is arranged on an axle at one side of a bearing away from the shaft end; the shaft box is arranged outside the bearing, and an inner hole in one end of the shaft box is in clearance fit with an outer ring of the bearing, the outer side end surface of the other end of the shaft box is formed by a labyrinth type sealing groove and a sealing ring, and the sealing groove in the rear stop and the sealing ring are connected together in an embedding mode. The structure is novel in design and convenient to install, the rear stop is matched with the shaft box to form a labyrinth non-contact seal, a closed space is provided for the bearing, rainwater or steam and other dirt can be effectively prevented from entering the interior of the shaft box, the gasket is arranged between the inner ring of the bearing and the rear stop, so that abrasion generated between the rear stop and the inner ring of the bearingis reduced or even avoided, and the service life and reliability of the bearing are improved.

Description

technical field [0001] The invention belongs to the technical field of high-speed railway bearing backstop design, and in particular relates to a high-speed railway bearing backstop structure with sealing performance. Background technique [0002] High-speed railway bearings are the key components of high-speed EMU bogies. Their speed, life and reliability directly affect the reliability and safety of vehicle operation. High-speed railway bearings run fast and have a long maintenance-free period. The wind speed is high, there is a lot of sand and dust, and it is often encountered in high air humidity, rainy weather, etc. The poor sealing performance of the bearing will allow dust, water vapor, or other dirt to invade the inside of the bearing and cause the deterioration of the grease, thus greatly shortening the maintenance-free period. cycle, increasing maintenance costs; in order to prevent dust, rain, water vapor, or other dirt from invading into the bearing and causing g...

AI Technical Summary

Problems solved by technology

In reality, the bearing side close to the shaft end is in a sealed space formed by the cooperation of the front cover and the axle box, and the bearing side far away from the shaft end cannot form a sealed space because the rear stopper cannot cooperate with the axle box, so that the bearing side is in a sealed space. In an open space, the sealing effect of the bearing is not affected, thus affecting the life and reliability of the bearing

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