CN105402255A - 双层密封配对轴承 - Google Patents

双层密封配对轴承 Download PDF

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CN105402255A
CN105402255A CN201510957976.2A CN201510957976A CN105402255A CN 105402255 A CN105402255 A CN 105402255A CN 201510957976 A CN201510957976 A CN 201510957976A CN 105402255 A CN105402255 A CN 105402255A
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bearing
seal ring
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CN105402255B (zh
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谭义银
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Wuxi Yulu Precision Industry Co.,Ltd.
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Second Wuxi Bearing Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
    • F16C33/7863—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element mounted to the inner race, e.g. a flinger to use centrifugal effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)

Abstract

本发明涉及一种轴承，具体的说是一种应用于高速电主轴承和高速机床主轴承领域的双层密封配对轴承，属于轴承技术领域。其包括轴承内圈、轴承外圈、轴承滚珠、滚珠保持架、内密封圈和外密封圈，轴承内圈和轴承外圈之间设有内密封圈和外密封圈，轴承外圈内侧设有内密封圈安装槽，内密封圈安装槽内固定内密封圈，内密封圈与轴承内圈之间留有间隙；轴承内圈外侧设有外密封圈安装槽，外密封圈安装槽内固定外密封圈，外密封圈与轴承外圈之间留有间隙，内密封圈和外密封圈之间留有间隙。本发明既解决了轴承密封问题，又解决了温升问题，避免密封圈高温烧坏；外密封圈的凸条产生气流，与C形结构的唇边共同作用，能够产生气封的效果。

Description

双层密封配对轴承
技术领域
本发明涉及一种轴承，具体的说是一种应用于高速电主轴承和高速机床主轴承领域的双层密封配对轴承，属于轴承技术领域。
背景技术
目前，高速轴承以Ｄn值达到100万以上为高速运转，这样的高速运转的密封结构一般都设计成非接触式。如果设计成接触式时，密封圈唇边与内圈的外径会有接触，瞬间高温可达几百度，不但密封圈会烧坏，连轴承也会被烧坏。但做成非接触式时，轴承的防尘及防水效果又差，轴承的密封问题是机械行业高速领域存在的通病。
发明内容
本发明的目的在于克服上述不足之处，从而提供一种双层密封配对轴承，既解决了轴承密封问题，又解决了温升问题，避免密封圈高温烧坏。
按照本发明提供的技术方案，双层密封配对轴承包括轴承内圈、轴承外圈、轴承滚珠、滚珠保持架、内密封圈和外密封圈，轴承内圈外表面设有内滚道，轴承外圈内表面设有外滚道，内滚道和外滚道连接形成完整的轴承滚珠滚道，在轴承滚珠滚道内设有轴承滚珠，轴承滚珠外圈设有滚珠保持架，其特征是：轴承内圈和轴承外圈之间设有内密封圈和外密封圈，轴承外圈内侧设有内密封圈安装槽，内密封圈安装槽内固定内密封圈，内密封圈与轴承内圈之间留有间隙；轴承内圈外侧设有外密封圈安装槽，外密封圈安装槽内固定外密封圈，外密封圈与轴承外圈之间留有间隙，内密封圈和外密封圈之间留有间隙；所述外密封圈的唇边为C形结构，外密封圈背向内密封圈一侧表面设有多个凸条。
进一步的，轴承滚珠的中心偏离轴承外圈的轴向中心位置，并且轴承滚珠的中心偏向安装内密封圈和外密封圈的对侧。
进一步的，轴承内圈与内密封圈的唇边的间隙范围为0.1~0.15，轴承外圈与外密封圈的唇边的间隙范围为0.1~0.15。
进一步的，内密封圈与滚珠保持架、外密封圈之间的间隙为≥0.8。
进一步的，多个凸条沿着外密封圈表面圆周方向均匀分布。
本发明与已有技术相比具有以下优点：
本发明结构简单、紧凑、合理，非接触式的内外密封圈既解决了轴承密封问题，又解决了温升问题，避免密封圈高温烧坏；外密封圈的凸条产生气流，与C形结构的唇边共同作用，能够产生气封的效果。
附图说明
图1为本发明主视图。
图2为外密封圈主视图。
附图标记说明：1-轴承内圈、2-轴承外圈、3-轴承滚珠、4-滚珠保持架、5-内密封圈、6-外密封圈、7-唇边、8-凸条。
具体实施方式
下面本发明将结合附图中的实施例作进一步描述：
如图1~2所示，本发明主要包括轴承内圈1、轴承外圈2、轴承滚珠3、滚珠保持架4、内密封圈5和外密封圈6，轴承内圈1外表面设有内滚道，轴承外圈2内表面设有外滚道，内滚道和外滚道连接形成完整的轴承滚珠滚道，在轴承滚珠滚道内设有轴承滚珠3，轴承滚珠3外圈设有滚珠保持架4。
为了保证内密封圈5和外密封圈6有足够的安装空间，所述轴承滚珠3的中心偏离轴承外圈2的轴向中心位置，并且轴承滚珠3的中心偏向安装内密封圈5和外密封圈6的对侧。
轴承内圈1和轴承外圈2之间设有非接触式连接的内密封圈5和外密封圈6。轴承外圈2内侧设有内密封圈安装槽，内密封圈安装槽内固定内密封圈5，内密封圈5与轴承内圈1之间留有间隙。轴承内圈1外侧设有外密封圈安装槽，外密封圈安装槽内固定外密封圈6，外密封圈6与轴承外圈2之间留有间隙，内密封圈5和外密封圈6之间留有间隙。
所述轴承内圈1与内密封圈5的唇边的间隙范围为0.1~0.15，轴承外圈2与外密封圈6的唇边7的间隙范围为0.1~0.15。间隙设置在该范围内，使得轴承内圈1与内密封圈5既能达到较好的密封效果，又不会产生过热，导致密封圈烧毁。
所述内密封圈5与滚珠保持架4、外密封圈6之间的间隙为≥0.8，在这个间隙范围内利于散热。
所述外密封圈6的唇边7为C形结构，C形结构的唇边7能与轴承外圈的间隙处形成高压，达到气封的效果。
所述外密封圈6背向内密封圈5一侧表面设有多个凸条8，多个凸条8沿着外密封圈6表面圆周方向均匀分布。在高速旋转时凸条8产生气流，与C形结构的唇边7共同作用，产生气封的效果。
本发明将双层非接触式密封应用于高速成对使用的领域，设计巧妙，结构合理，既解决了密封问题，又解决了温升问题，解决了行业中高速轴承的密封难题。

Claims (5)

1.一种双层密封配对轴承，包括轴承内圈（1）、轴承外圈（2）、轴承滚珠（3）、滚珠保持架（4）、内密封圈（5）和外密封圈（6），轴承内圈（1）外表面设有内滚道，轴承外圈（2）内表面设有外滚道，内滚道和外滚道连接形成完整的轴承滚珠滚道，在轴承滚珠滚道内设有轴承滚珠（3），轴承滚珠（3）外圈设有滚珠保持架（4），其特征是：轴承内圈（1）和轴承外圈（2）之间设有内密封圈（5）和外密封圈（6），轴承外圈（2）内侧设有内密封圈安装槽，内密封圈安装槽内固定内密封圈（5），内密封圈（5）与轴承内圈（1）之间留有间隙；轴承内圈（1）外侧设有外密封圈安装槽，外密封圈安装槽内固定外密封圈（6），外密封圈（6）与轴承外圈（2）之间留有间隙，内密封圈（5）和外密封圈（6）之间留有间隙；所述外密封圈（6）的唇边（7）为C形结构，外密封圈（6）背向内密封圈（5）一侧表面设有多个凸条（8）。
2.如权利要求1所述的双层密封配对轴承，其特征是：所述轴承滚珠（3）的中心偏离轴承外圈（2）的轴向中心位置，并且轴承滚珠（3）的中心偏向安装内密封圈（5）和外密封圈（6）的对侧。
3.如权利要求1所述的双层密封配对轴承，其特征是：所述轴承内圈（1）与内密封圈（5）的唇边的间隙范围为0.1~0.15，轴承外圈（2）与外密封圈（6）的唇边（7）的间隙范围为0.1~0.15。
4.如权利要求1所述的双层密封配对轴承，其特征是：所述内密封圈（5）与滚珠保持架（4）、外密封圈（6）之间的间隙为≥0.8。
5.如权利要求1所述的双层密封配对轴承，其特征是：所述多个凸条（8）沿着外密封圈（6）表面圆周方向均匀分布。
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107420435A (zh) * 2017-06-26 2017-12-01 安徽利达汽车轴承制造有限公司 一种多唇密封轴承
CN108253140A (zh) * 2017-12-16 2018-07-06 洛阳轴承研究所有限公司 轴系支撑端密封结构及其骨架式密封圈
CN110966309A (zh) * 2018-09-28 2020-04-07 皮尔轴承公司 轴承密封件及其应用

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