Bearing and its inner ring

Abstract

The object of the present invention is to provide a bearing and its inner ring. Through the improvement of the inner ring structure, the number of parts constituting the lubricating oil passage of the bearing can be reduced, thereby reducing the possibility of lubricating oil pollution and leakage, and at the same time realizing the uniformity of the bearing. Lubrication and cooling. The bearing inner ring has a ring of positioning ribs formed on its inner peripheral side, a plurality of axial oil delivery grooves and an oil collecting ring, the oil collecting ring is located at the end edge of the bearing inner ring, and the positioning rib is relatively Located at the inner position in the axial direction, the positioning rib protrudes radially from the inner peripheral wall surface of the bearing inner ring, and the oil delivery groove passes through the positioning rib axially from the oil collecting ring on the inner peripheral wall surface, and the delivery Oil injection holes are arranged at different positions of the oil groove. The oil injection holes penetrate the inner ring of the bearing from the inner peripheral side wall surface. The multiple oil delivery grooves and oil injection holes are respectively used for lubricating and cooling the bearing raceway, and the cage and rolling elements on the outer peripheral side.

Description

technical field [0001] The invention relates to a bearing and an inner ring of the bearing, in particular to a structure related to lubricating oil delivery of the bearing. Background technique [0002] There are many factors that cause bearing failure. According to relevant foreign statistics, bearing failure due to insufficient lubrication and improper lubrication account for about 37%, while bearing failure due to pollution accounts for about 21%. Therefore, adopting the correct oil supply arrangement and ensuring the cleanliness of the oil are one of the necessary means to ensure the stable and normal operation of the system. At present, the commonly used oil supply arrangement includes three structures, one is the side spray oil supply arrangement, the other is the impeller radial oil collection ring oil supply arrangement, and the other is the ordinary ring lubrication oil supply arrangement. Among them, ordinary under-ring lubrication and impeller radial oil collecto...

AI Technical Summary

Problems solved by technology

The oil transmission line passes through three parts including lock nut, anti-rotation structure and inner bushing, which increases the possibility of oil pollution and oil leakage. Oil pollution and leakage will lead to bearing failure or even system failure

For example, due to the large number of parts, the leakage of the sealing ring between the high-pressure bearing and the oil collector ring may cause white sparks to be ejected from the upper left corner of the tail nozzle during the test run, and the high-pressure vibration will suddenly increase. If the car is not stopped in time, it may cause a larger danger

Further, about 90% of the lubricating oil entering the inner bush will enter the bearing from some channels, resulting in uneven oil supply to the bearing, resulting in local high temperature of the bearing, destroying the formation of the oil film, and even burning the bearing

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