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A single rod bearing for high-speed rotation

A high-speed rotation, single-rod technology, applied in the field of bearing lubrication, can solve the problems of being unable to get close to the bearing, affecting the service life of the bearing, and replenishing lubricant for the bearing, so as to avoid the risk of overheating, prolong the service life and reduce the rotation resistance.

Active Publication Date: 2022-07-19
OKADA SEIKI DANYANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing bearing lubrication cannot automatically and timely replenish the lubricant for the bearing, and manual lubrication is required on a regular basis, which is time-consuming and laborious, and the lubrication effect of the bearing is limited by the speed. When the rotor speed is low, due to the small centrifugal force, the axial After the oil is discharged, it can be sprayed smoothly into the bearing raceway to complete the bearing lubrication. However, when the rotor speed is high, due to the large centrifugal force, the oil will float away in the radial direction after the axial discharge, and cannot approach the bearing, resulting in insufficient lubrication of the high-speed bearing, resulting in The risk of bearing overheating seriously affects the service life of the bearing, and there are great safety hazards during the operation of the bearing

Method used

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  • A single rod bearing for high-speed rotation
  • A single rod bearing for high-speed rotation
  • A single rod bearing for high-speed rotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] like Figure 1 to Figure 2 The shown single-rod bearing for high-speed rotation includes: a bearing rod 10, a bearing sleeve 20 and a bearing washer 30, the bearing rod 10 is axially provided with a rolling step shaft 11 and a fixed step shaft 12 in turn; the bearing sleeve 20 sets A plurality of needle rollers 40 are installed on the rolling step shaft 11, and are located in the annular gap between the bearing sleeve 20 and the bearing rod 10 and are evenly distributed along the circumferential direction. The two adjacent needle rollers 40 and the inner hole wall form an oil collecting cavity 50; The bearing washer 30 is sleeved on the fixed step shaft 12 and abuts on the limit interface between the rolling step shaft 11 and the fixed step shaft 12 ; wherein, the end of the rolling step shaft 11 is provided with a bearing spacer 30 to match The limiting flange 13 is used to limit the axial movement of the bearing sleeve 20. The oil inlet grooves 21 are provided on both...

Embodiment 2

[0059] The difference between this embodiment and the first embodiment is that the structure of the oil inlet groove 21 is different, and the other structures are the same, which will not be repeated here. In this embodiment, as Figure 4 As shown, the oil inlet groove 21 is arc-shaped and penetrates radially from the outer edge to the inner hole; the depth of the oil inlet groove 21 from the outer edge to the inner hole gradually becomes deeper.

[0060] Specifically, the depth of the groove bottom is changed on the basis of the circumferential inclination of the oil inlet groove 21, so that the inclination angle of the end facing the inner hole becomes larger, and the contact area between the lubricating oil and the needle roller 40 is increased, and the oil inlet groove 21 is uniformly distributed along the circumferential direction. 3. When the bearing sleeve 20 rotates in the same direction as the inclination direction of the oil inlet groove 21, the pressure of the outer ...

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PUM

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Abstract

The invention relates to the technical field of bearing lubrication, in particular to a single-rod bearing for high-speed rotation, comprising: a bearing rod, a bearing sleeve and a bearing gasket, the bearing sleeve is arranged on the rolling step shaft of the bearing rod, and is located in the annular gap A number of needle rollers are installed evenly along the circumferential direction, and two adjacent needle rollers and the inner hole wall form an oil collecting cavity; the bearing gasket is sleeved on the fixed step shaft, and the rolling step shaft is equipped with a bearing gasket to limit The limit flange of the bearing sleeve moves in the axial direction. The oil inlet grooves are arranged on both end faces of the bearing sleeve and are inclined in the radial direction. The first oil hole and the oil inlet groove on the bearing rod are connected with the annular gap. The hole communicates with the second oil hole. When the bearing rotates at a high speed, the pressure difference generated by the rotation of the oil inlet can make the lubricating oil quickly enter the annular gap, and quickly discharge through the first oil hole and the second oil hole, lubricate the needle roller and take away the heat generated by the bearing in time to avoid It reduces the risk of bearing overheating and prolongs the service life of the bearing.

Description

technical field [0001] The invention relates to the technical field of bearing lubrication, in particular to a single-rod bearing used for high-speed rotation. Background technique [0002] Bearings are often used as guide rollers, valve stem rollers, cam rollers and pressure rollers to achieve sliding, etc., and are mainly suitable for a variety of machinery, such as automatic machinery, special machinery, cam working devices, various handling systems, conveyors and machining centers. Knife device. [0003] The existing bearing lubrication cannot automatically and timely replenish the lubricant for the bearing, which requires regular manual lubrication, which is time-consuming and labor-intensive, and the lubrication effect of the bearing is limited by the rotation speed. When the rotor rotation speed is low, due to the small centrifugal force, the axial After the oil is discharged, it can be smoothly sprayed into the bearing raceway to complete the bearing lubrication, bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C19/46F16C33/66F16C33/58F16C37/00
CPCF16C19/46F16C33/6659F16C33/58F16C37/007
Inventor 陈亮刘涛朱建国张海见
Owner OKADA SEIKI DANYANG CO LTD
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