A kind of anti-leakage grease sealing structure of fan turntable bearing

A technology of slewing bearing and sealing structure, applied in the direction of shaft and bearing, bearing components, mechanical equipment, etc., can solve the problems of insufficient pressure resistance limit of the sealing ring, leakage of grease at the sealing ring, poor stability and reliability, etc. The operation process is stable and reliable, the function is ensured, and the effect of eliminating the interference of normal operation

Active Publication Date: 2019-03-29
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these technical measures can reduce the grease leakage at the sealing ring of the slewing bearing to a certain extent, their stability and reliability are not good. At this time, the pressure limit of the sealing ring is still not enough, and the phenomenon of grease leakage at the sealing ring still exists

Method used

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  • A kind of anti-leakage grease sealing structure of fan turntable bearing

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 As shown, the present invention includes an inner ferrule 1, an outer ferrule 2 and an oil return system.

[0023] Wherein, the inner ferrule 1 and the outer ferrule 2 are radially fitted and assembled together. Specifically, a row of corresponding raceways 3 is provided between the outer peripheral surface of the inner ring 1 and the inner peripheral surface of the outer ring 2, and the raceways 3 are circumferentially formed between the inner ring 1 and the outer ring 2, and the raceways 3 is used to accommodate the rolling element 12; the inner ring 1 and the outer ring 2 are assembled together in a relative rotation manner through the rolling element 12 in the raceway 3. In the radial direction of the aforementioned outer ring 2, there are a plurality of grease discharge holes communicating with the raceway 3—that is, the main grease discharge holes.

[0024] The raceway 3 between the inner ring 1 and the outer ring 2 is injected with lubricating grea...

Embodiment 2

[0029] The invention includes an inner ring, an outer ring and an oil return system.

[0030] Wherein, the inner ferrule and the outer ferrule are radially fitted together. Specifically, a row of corresponding raceways is provided between the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring, and the raceways are circumferentially formed between the inner ring and the outer ring, and the raceways are used to accommodate rolling elements ; The inner ring and the outer ring are assembled together in a relatively rotating manner through the rolling elements in the raceway. In the radial direction of the aforementioned outer ring, there is a grease discharge hole communicated with the raceway—that is, the main grease discharge hole.

[0031] The raceway between the inner ring and the outer ring is injected with lubricating grease to ensure that the rolling elements can achieve good rolling operation in the raceway. There are sealing ri...

Embodiment 3

[0035] The invention includes an inner ring, an outer ring and an oil return system.

[0036] Wherein, the inner ferrule and the outer ferrule are radially fitted together. Specifically, two rows of corresponding raceways are provided between the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring, and the raceways are formed circumferentially between the inner ring and the outer ring, and the raceways are used to accommodate rolling body; the inner ring and the outer ring are assembled together in a relatively rotational manner through the rolling elements in the raceway. In the radial direction of the aforementioned inner ring, there are a plurality of grease discharge holes communicated with the raceway—that is, the main grease discharge hole.

[0037] The raceway between the inner ring and the outer ring is injected with lubricating grease to ensure that the rolling elements can achieve good rolling operation in the raceway. Ther...

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PUM

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Abstract

The invention discloses a grease leakage preventing seal structure of a rotating disk bearing of a fan. The grease leakage preventing seal structure comprises an inner sleeve ring and an outer sleeve ring which are matched together; one or more rows of raceways which can accommodate rolling bodies are arranged between the inner sleeve ring and the outer sleeve ring; seal rings are arranged between the inner sleeve ring and the outer sleeve ring, on two sides of the corresponding raceway; one or more grease discharging holes are formed in the seal rings on one side or two sides of each raceway, and an oil return system is connected to the seal rings on one side or two sides of the corresponding raceway through the grease discharging holes; the oil return system mainly consists of one or more oil guide pipes, one or more oil path control valves and one or more oil collectors; the upstream end of each oil guide pipe is in sealed connection to the corresponding grease discharging hole in the corresponding seal ring, and the downstream end of each oil guide pipe is in sealed connection to the corresponding oil collector; and each oil path control valve is arranged on the corresponding oil guide pipe. Under the premise that the pressure resistance limit of the seal rings does not need to be improved, the grease leakage preventing seal structure disclosed by the invention can be adapted to working conditions of various grease discharging resistances, is good in seal effects, and stable and reliable in running process, and can effectively prevent lubricating grease in the raceways from leaking outwards out of order.

Description

technical field [0001] The invention relates to a turntable bearing of a wind-driven generator, in particular to a grease-proof sealing structure for a turntable bearing of a wind-driven generator. Background technique [0002] The yaw bearing and the pitch bearing of the wind turbine, that is, the wind turbine, are respectively a kind of slewing bearings that can bear comprehensive loads such as large axial load, radial load and overturning moment at the same time, which are mainly composed of an inner ring and an outer ring There is at least one row of raceways (usually single or double rows) between the inner ring and the outer ring that can accommodate the rolling elements, and there are respectively between the inner ring and the outer ring on both sides of the raceway sealing ring. [0003] The sealing structure of the existing fan slewing bearing is that the raceway between the inner ring and the outer ring is completely sealed by the sealing rings on both sides, tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/78F16C33/58F16C33/66
CPCF16C33/583F16C33/6603F16C33/7806F16C33/7816
Inventor 洪超郑大周
Owner 东方电气风电股份有限公司
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