CN108386450A - 自泄压的多唇密封轴承 - Google Patents
自泄压的多唇密封轴承 Download PDFInfo
- Publication number
- CN108386450A CN108386450A CN201810346889.7A CN201810346889A CN108386450A CN 108386450 A CN108386450 A CN 108386450A CN 201810346889 A CN201810346889 A CN 201810346889A CN 108386450 A CN108386450 A CN 108386450A
- Authority
- CN
- China
- Prior art keywords
- sealing
- ring
- lip
- parts
- pressure release
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 96
- 210000000088 Lip Anatomy 0.000 claims abstract description 52
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 24
- 210000002356 Skeleton Anatomy 0.000 claims abstract description 14
- 230000002093 peripheral Effects 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000463 materials Substances 0.000 claims abstract description 8
- 210000003027 Ear, Inner Anatomy 0.000 claims abstract description 4
- 280000032498 Groovy companies 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910021393 carbon nanotubes Inorganic materials 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 6
- 229920001971 elastomers Polymers 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 239000004014 plasticizers Substances 0.000 claims description 6
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound 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Classifications
-
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Abstract
本发明涉及一种自泄压的多唇密封轴承，它包括有内圈、外圈、内圈与外圈之间设有钢球、保持架、密封圈，所述的密封圈包括密封件和L形骨架，L形骨架设置在密封件的内部，所述的密封件的外侧缘设置有卡头，密封件的内侧缘上设置有若干向外呈倾角的密封唇，卡头卡装在设置在外圈内周面的凹槽内，密封唇卡与内圈外周面过盈接触，密封唇由内向外均匀分布，密封唇与内圈共同构成迷宫密封，且外侧的密封唇的厚度大于内侧密封唇的厚度，所述最内侧密封唇一侧设有内凹槽，最内侧密封唇一侧设有外凹槽，所述的密封件采用改性的氢化丁腈橡胶材质。密封性能好，且能够有效排出轴承内部的压强，使轴承内外部的压强保持一致。
Description
自泄压的多唇密封轴承
技术领域
[0001]本发明涉及轴承领域，具体涉及一种自泄压的多唇密封轴承。
背景技术
[0002]现有轴承上自带的密封圈，具有密封件和骨架，密封件的内周有三个平行排列厚 度相同的接触唇，与轴承内圈外径面接触，接触唇与轴承内圈外径面的单边过盈量为 0.4mm左右，骨架外侧面有定位密封件的挡边，其收口直径比轴承内圈外径大1.0mm左 右，这种结构使得密封件的接触唇与轴承内圈外径间的过盈量过小，且密封件的弹性不足， 造成密封圈的密封性能降低，影响了轴承的润滑效果，对于长时间在混有水汽、灰尘、草屑 的环境下工作的轴承，这种密封结构形式就更显不足，灰尘等很容易渗入轴承内部，细微的 颗粒与润滑油脂混为一体，加剧了轴承的磨损，最终造成轴承使用寿命的大大缩短。
[0003]另现有的轴承密封大多采用整体式密封防尘设计，这种设计虽然密封性能优越， 但不仅会导致轴承的起动力矩大，而且整体式防尘密封圈会造成轴承内外部的压强差，导 致轴承卡死失效，使用寿命短。
发明内容
[0004] 为解决上述问题，本发明提出一种密封性能好的自泄压的多唇密封轴承，密封性 能好，且能够有效排出轴承内部的压强，使轴承内外部的压强保持一致。
[0005] 本发明技术方案： 一种自泄压的多唇密封轴承，它包括有内圈、外圈、内圈与外圈之间设有钢球、用于安 装钢球的保持架、以及位于钢球两侧的内圈与外圈之间设置有密封圈，所述的密封圈包括 密封件和L形骨架，L形骨架设置在密封件的内部，所述的密封件的外侧缘设置有卡头， 密封件的内侧缘上设置有若干向外呈倾角的密封唇，卡头卡装在设置在外圈内周面的凹槽 内，密封唇卡与内圈外周面过盈接触，密封唇由内向外均匀分布，密封唇与内圈共同构成迷 宫密封，且外侧的密封唇的厚度大于内侧密封唇的厚度，所述最内侧密封唇一侧设有内凹 槽，最内侧密封唇一侧设有外凹槽，所述的密封件采用改性的氢化丁腈橡胶材质。当轴承旋 转工作时，轴承发热膨胀，内部压力逐渐增大并沿着密封回路的边沿进行扩散，压力沿内凹 槽向密封唇扩散时，越往外扩散压强越大，便会顶开密封唇，将压力从轴承内部排出，实现 了轴承的自卸载内部压强功能，改性的氢化丁腈橡胶耐热、耐磨性能及机械强度可得到有 效的改进和提高，使得密封圈整体性能更佳。
[0006] 对上述技术方案作进一步的改进和细化，所述的改性的氢化丁腈橡胶各组分含量 按重量计为:氢化丁腈橡胶100份、碳纳米管0.5-15份、气相白炭黑20-35份、阻燃剂35-55份、防老剂3-6.5份、硫化机剂4-7份、着色剂1_3份、增塑剂4-25份;先对碳纳米管进行表 面处理，将表面处理后的碳纳米管与一种液体橡胶通过超声波混合均匀，然后加入部分氢 化丁腈橡胶中制得母炼胶，在母炼胶中加入余下的氢化丁腈橡胶、气相白炭黑、阻燃剂、防 老剂、着色剂、增塑剂，用开炼机或者密炼机对上述混合物进行乳炼加工，得到以碳纳米管 改性的氢化丁腈橡胶混炼胶，再通过硫化机硫化加工，即可得到改性的氢化丁腈橡胶。
[0007] 对上述技术方案作进一步的改进和细化，所述的内圈的外周面上还设置有径向凸 起，凸起卡在最外侧密封唇与其余密封唇之间，因多层密封唇设计，密封件弹性强，过盈接 触不能过有效防止密封圈脱落，利用凸起进一步防止密封圈脱落。
[0008] 对上述技术方案作进一步的改进和细化，所述的密封唇的数量为2个或者2个以 上。
[0009] 对上述技术方案作进一步的改进和细化，所述的卡头为斜齿状，有效防止凸密封 件的外侧缘脱出外圈内周面的凹槽，进而导致密封圈脱落。
[0010] 对上述技术方案作进一步的改进和细化，所述的骨架的材料选用弹簧钢。
[0011] 本发明的有益效果是，解决了背景技术中存在的缺陷，实现了轴承的自卸载内部 压强功能，避免了整体式密封导致轴承内外部存在压强差，使得轴承抱死而早期失效;且利 用密封唇与内圈过盈配合，增加密封性能，密封唇厚度加厚，使其与内圈外周面接触长度加 长，增强了密封件的弹性，提高了轴承的密封性能，多层密封唇与内圈形成迷宫密封，可有 效地防止水汽、灰尘、草屑等混入轴承内部，减少轴承的磨损，延长轴承的工作寿命，进一步 利用改性的氢化丁腈橡胶材质，增强了密封圈的整体性能。
附图说明
[0012] 图1是自泄压的多唇密封轴承机构半剖示意图。
[0013] 图2是图1局部放大示意图。
[00M]图中内圈01外圈02钢球03保持架04密封圈05密封件06骨架07密封唇08 卡头12凹槽13内凹槽10外凹槽09。
具体实施方式
[0015]如图I-2, 一种自泄压的多唇密封轴承，它包括有内圈01、外圈02、内圈01与外圈02 之间设有钢球〇3、用于安装钢球03的保持架04、以及位于钢球03两侧的内圈01与外圈〇2之 间设置有密封圈05,所述的密封圈05包括密封件06和L形骨架07，L形骨架07设置在密封 件06的内部，所述的密封件06的外侧缘设置有卡头12,密封件06的内侧缘上设置有若干向 外呈倾角的密封唇08,卡头12卡装在设置在外圈02内周面的凹槽13内，密封唇08与内圈01 外周面过盈接触，密封唇08由内向外均匀分布，密封唇08与内圈01共同构成迷宫密封，且外 侧的密封唇08的厚度大于内侧密封唇08的厚度，所述最内侧密封唇08—侧设有内凹槽10， 最内侧密封唇08—侧设有外凹槽09,所述的密封件06采用改性的氢化丁腈橡胶材质;所述 的内圈01的外周面上还设置有径向凸起11，凸起11卡在最外侧密封唇08与其余密封唇08之 间，因多层密封唇设计，密封件弹性强，过盈接触不能够有效防止密封圈05脱落，利用凸起 进一步防止密封圈05脱落;所述的卡头12为斜齿状，有效防止凸密封件05的外侧缘脱出外 圈02内周面的凹槽13,进而导致密封圈05脱落;所述的密封唇08的数量为2个或者2个以上； 所述的骨架07的材料选用弹簧钢。
[0016]所述的改性的氢化丁腈橡胶各组分含量按重量计为:氢化丁腈橡胶1〇〇份、碳 纳米管0.5-15份、气相白炭黑20-35份、阻燃剂35-55份、防老剂3-6.5份、硫化机剂4-7份、着 色剂1-3份、增塑剂4-25份;先对碳纳米管进行表面处理，将表面处理后的碳纳米管与一种 m评傢収通过fe尸敬泥曰功习，然后加入部分氢化丁腈橡胶中制得母炼胶，在母炼胶中加 入余下的氢化丁腈橡胶、气相白炭黑、阻燃剂、防老剂、着色剂、增塑剂，用开炼机或者密炼 机对上述混合物进行轧炼加工，得到以碳纳米管改性的氢化丁腈橡胶混炼胶，再通过硫化 机硫化加工，即可得到改性的氢化丁腈橡胶。
[0017]由于文字表达的有限性，而客观上存在无限的具体结构，对于本技术领域的普通 技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进、润饰或变化，也可以 将上述技术特征以适当的方式进行组合;这些改进润饰、变化或组合，或未经改进将发明的 构思和技术方案直接应用于其它场合的，均应视为本发明的保护范围。
Claims (7)
1. 一种自泄压的多唇密封轴承，它包括有内圈、外圈、内圈与外圈之间设有钢球、用于 安装钢球的保持架、以及位于钢球两侧的内圈与外圈之间设置有密封圈，其特征在于:所述 的密封圈包括密封件和L形骨架，L形骨架设置在密封件的内部，所述的密封件的外侧缘 设置有卡头，密封件的内侧缘上设置有若干向外呈倾角的密封唇，卡头卡装在设置在外圈 内周面的凹槽内，密封唇卡与内圈外周面过盈接触，密封唇由内向外均匀分布，密封唇与内 圈共同构成迷宫密封，且外侧的密封唇的厚度大于内侧密封唇的厚度，所述最内侧密封唇 一侧设有内凹槽，最内侧密封唇一侧设有外凹槽，所述的密封件采用改性的氢化丁腈橡胶 材质。
2. 根据权利要求1所述的一种自泄压的多唇密封轴承，其特征在于:所述的改性的氢化 丁腈橡胶各组分含量按重量计为:氢化丁腈橡胶100份、碳纳米管0•5-15份、气相白炭黑 20-35份、阻燃剂35-55份、防老剂3-6.5份、硫化机剂4-7份、着色剂1-3份、增塑剂4-25份。
3. 根据权利要求2所述的一种自泄压的多唇密封轴承，其特征在于:先对碳纳米管进行 表面处理，将表面处理后的碳纳米管与一种液体橡胶通过超声波混合均匀，然后加入部分 氢化丁腈橡胶中制得母炼胶，在母炼胶中加入余下的氢化丁腈橡胶、气相白炭黑、阻燃剂、 防老剂、着色剂、增塑剂，用开炼机或者密炼机对上述混合物进行轧炼加工，得到以碳纳米 管改性的氢化丁腈橡胶混炼胶，再通过硫化机硫化加工，即可得到改性的氢化丁腈橡胶。
4. 根据权利要求3所述的一种自泄压的多唇密封轴承，所述的内圈的外周面上还设置 有径向凸起，凸起卡在最外侧密封唇与其余密封唇之间。 / 、、… _
5.根据权利要求4所述的一种自泄压的多唇密封轴承，其特征在于:所述的笛封唇的数 量为2个或者2个以上。
6.棚权利要求5臟的-种自泄細乡唇密辦碑，斯嫌在于:臓的卡头为斜齿 状。
7.根据权利要求6所述的-种自泄压的多唇密封轴承，其特征在于:所骨架的材料 选用弹簧钢。
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| JP2004092785A (ja) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | 転がり軸受用密封装置 |
| CN201651071U (zh) * | 2009-11-07 | 2010-11-24 | 浙江蓝翔轴承有限公司 | 用于深沟球轴承的接触式密封圈 |
| CN201751635U (zh) * | 2010-06-29 | 2011-02-23 | 浙江新昌皮尔轴承有限公司 | 多唇复合防尘盖及轴承密封结构 |
| CN202266594U (zh) * | 2011-09-22 | 2012-06-06 | 洛阳森诺精密轴承有限公司 | 一种背衬轴承的双刃边骨架油封 |
| CN103742544A (zh) * | 2013-12-27 | 2014-04-23 | 瓦房店轴承集团有限责任公司 | 带有双倒刺型外卡扣式密封挡圈的控压厚壁轴承 |
| CN204878363U (zh) * | 2015-08-20 | 2015-12-16 | 南安泛科轴承检测技术有限公司 | 具有多唇密封圈的外球面轴承 |
| CN105555857A (zh) * | 2013-07-11 | 2016-05-04 | Nok株式会社 | 丁腈橡胶组合物 |
| CN105736581A (zh) * | 2016-05-17 | 2016-07-06 | 安徽利达汽车轴承制造有限公司 | 一种轴承密封圈 |
| CN106090027A (zh) * | 2016-08-08 | 2016-11-09 | 浙江天马轴承有限公司 | 一种密封调心滚子轴承的密封圈 |
| CN206144997U (zh) * | 2016-10-29 | 2017-05-03 | 宁波更大集团有限公司 | 密封轴承 |
| CN107501651A (zh) * | 2017-08-28 | 2017-12-22 | 宁国市宁和密封件厂 | 一种电动车制动钳用橡胶密封件 |
| CN206904080U (zh) * | 2017-06-20 | 2018-01-19 | 钱潮轴承有限公司 | 一种渐变补偿式密封结构 |
-
2018
- 2018-04-18 CN CN201810346889.7A patent/CN108386450A/zh not_active Application Discontinuation
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|---|---|---|---|---|
| JP2004092785A (ja) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | 転がり軸受用密封装置 |
| CN201651071U (zh) * | 2009-11-07 | 2010-11-24 | 浙江蓝翔轴承有限公司 | 用于深沟球轴承的接触式密封圈 |
| CN201751635U (zh) * | 2010-06-29 | 2011-02-23 | 浙江新昌皮尔轴承有限公司 | 多唇复合防尘盖及轴承密封结构 |
| CN202266594U (zh) * | 2011-09-22 | 2012-06-06 | 洛阳森诺精密轴承有限公司 | 一种背衬轴承的双刃边骨架油封 |
| CN105555857A (zh) * | 2013-07-11 | 2016-05-04 | Nok株式会社 | 丁腈橡胶组合物 |
| CN103742544A (zh) * | 2013-12-27 | 2014-04-23 | 瓦房店轴承集团有限责任公司 | 带有双倒刺型外卡扣式密封挡圈的控压厚壁轴承 |
| CN204878363U (zh) * | 2015-08-20 | 2015-12-16 | 南安泛科轴承检测技术有限公司 | 具有多唇密封圈的外球面轴承 |
| CN105736581A (zh) * | 2016-05-17 | 2016-07-06 | 安徽利达汽车轴承制造有限公司 | 一种轴承密封圈 |
| CN106090027A (zh) * | 2016-08-08 | 2016-11-09 | 浙江天马轴承有限公司 | 一种密封调心滚子轴承的密封圈 |
| CN206144997U (zh) * | 2016-10-29 | 2017-05-03 | 宁波更大集团有限公司 | 密封轴承 |
| CN206904080U (zh) * | 2017-06-20 | 2018-01-19 | 钱潮轴承有限公司 | 一种渐变补偿式密封结构 |
| CN107501651A (zh) * | 2017-08-28 | 2017-12-22 | 宁国市宁和密封件厂 | 一种电动车制动钳用橡胶密封件 |
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Application publication date: 20180810 |