High-speed lower lubricating device for bearing ring

Abstract

The invention discloses a high-speed lower lubricating device for a bearing ring. The high-speed lower lubricating device comprises an oil gathering sleeve, wherein an inner ring of a bearing and the oil gathering sleeve rotate synchronously; the inner wall of the inner ring of the bearing is respectively provided with a lubricating oil groove in an axial direction and a radial oil hole in a radial direction; one end of the radial oil hole is communicated with the lubricating oil groove, and the other end of the radial oil hole is communicated with a raceway of the inner ring of the bearing; the oil gathering sleeve and the inner ring of the bearing coaxially and fixedly sleeve a main shaft; the oil gathering sleeve is divided into two parts along the axial direction, the inner part of one part is provided with axial oil grooves butted with the lubricating oil groove, and the other part is radially provided with oil gathering passages which are in one-to-one butt joint with the axial oil grooves; the oil gathering passages are separated by a plurality of oil gathering blades distributed in the radial direction; an outer ring of the bearing is fixedly arranged on a shaft shell; the parts, which correspond to the oil gathering passages, of the shaft shell are provided with nozzles connected with a lubricating oil system. The high-speed lower lubricating device is capable of improving the bearing lubricating efficiency, reducing the lubricating oil quantity, further reducing the internal friction heat of the bearing and ensuring that sufficient oil film thickness exists in the raceway during high-speed rotation of the bearing.

Description

technical field [0001] The invention belongs to the technical field of bearing lubrication, and in particular relates to a lubricating device under a high-speed bearing ring. Background technique [0002] High-speed bearings have a high speed or DN value, and often bear a large load. During operation, they generate a lot of heat, and often work in a high-temperature environment, which further increases the working temperature of the bearing. The most critical measure to solve the high temperature problem is to adequately lubricate and cool the bearings. In the past, the bearing generally adopts the spray lubrication method, which is to inject the lubricating oil from the end face of the bearing into the gap between the cage and the ring at a certain angle, and then lubricate the bearing. Under high-speed conditions, affected by factors such as the bearing structure, its lubrication efficiency is low, and it cannot be fully lubricated and cooled. The failures caused by the ...

AI Technical Summary

Problems solved by technology

Under high-speed conditions, affected by factors such as the bearing structure, its lubrication efficiency is low, and it cannot be fully lubricated and cooled

The failures caused by the failure of high-speed bearings are often caused by insufficient oil supply, insufficient lubrication and cooling of high-speed bearings, indicating that high-speed bearings have constituted one of the weakest links in the entire equipment, seriously affecting the quality of the equipment

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