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Sealing ring and sealing unit

A technology of sealing unit and sealing ring, which is applied in the direction of engine sealing, engine components, wind power generation, etc., can solve the problems of deformation, distortion, grease leakage, etc., and achieve the effect of reducing maintenance cost, reducing wear and tear, and low cost

Pending Publication Date: 2022-05-27
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the sealing ring has no auxiliary support or reinforcement measures, so it is very soft and easily deformed and twisted during assembly
This results in a lot of gaps between the end cap and the sealing lip of the seal where grease can leak out

Method used

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  • Sealing ring and sealing unit
  • Sealing ring and sealing unit
  • Sealing ring and sealing unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 A schematic cross-sectional view of a sealing unit according to a preferred embodiment is shown. Here, sealing units are used to seal large bearings in wind turbines. The bearing includes an outer ring 2 and an inner ring 3 and can perform two-way relative rotation according to the working conditions. The sealing ring 1 of the sealing unit is fixed on the sealing seat of the cover ring 5 by an interference fit at its radial inner side and forms an interference fit with the inner ring 3 of the bearing and the cover ring 5 respectively in the axial direction. The sealing ring 1 forms a dynamic contact seal on the radially outer side with the end cover 4 fixedly connected to the outer ring 2 in order to prevent air-side contamination from entering the bearing and to prevent leakage of the fluid-side, ie, in this case, grease in the bearing.

[0035] figure 2 shows according to figure 1 A schematic cross-sectional view of the sealing ring 1 in the sealing unit...

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PUM

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Abstract

The invention relates to a sealing ring and a sealing unit. The sealing ring (1) comprises an elastic sealing part (11) which forms a sealing lip (111) on one side in the radial direction, the sealing lip (111) is used for abutting against a component (4) capable of rotating relative to the sealing ring (1), so that a dynamic seal is formed between the air side and the fluid side, and a bidirectional fluid return structure is formed on a sealing slope, facing the air side, of the sealing lip (111); and leaf springs (12) which are distributed at the elastic sealing part (11) in the circumferential direction and apply pressing force towards the component (4) to the sealing lip (111). The sealing unit comprises the sealing ring (1) and a component (4) capable of rotating relative to the sealing ring (1), and the sealing ring (1) can abut against the component (4), so that dynamic sealing is formed.

Description

technical field [0001] The present invention relates to sealing technology. The invention particularly relates to a sealing ring for large bearings especially used in the field of wind power. The present invention also relates to a sealing unit comprising the above-mentioned sealing ring. Background technique [0002] At present, sealing rings made of rubber are often arranged at wind power bearings used in wind turbines. The sealing ring is mounted, for example, on the sealing seat of the cover ring and forms an interference fit in the axial direction with the inner ring and the cover ring of the bearing, respectively. The sealing ring is constructed with a main lip on the grease side and a dust lip on the air side, wherein both sealing lips form a dynamic contact seal with the end cover fixedly connected to the outer ring of the bearing to prevent the entry of foreign contaminants Bearing and prevent grease leakage in the bearing. [0003] However, since the wind power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3204F16J15/3284F16J15/3268
CPCF16J15/3204F16J15/3284F16J15/3268Y02E10/72
Inventor 刘鑫吴丽娟范佳唐瑜黄春亮
Owner SCHAEFFLER TECH AG & CO KG
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