CN104514808B - 旋转组件、拆卸密封元件的方法及实施该方法的提取工具 - Google Patents
旋转组件、拆卸密封元件的方法及实施该方法的提取工具 Download PDFInfo
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Abstract
该旋转组件(A)包括:第一元件(R),其绕着旋转轴线(X‑X')相对于第二元件(B)旋转;至少一个轴承(2、4),其布置在所述第一和第二元件(R、B)之间;以及至少一个密封元件(6、8),其布置在所述第一元件(R)和所述第二元件(B)之间。所述密封元件(6、8)容纳在设置在所述第一元件(R)上的圆周凹槽(12)中,并且包括依靠在所述第二元件(B)的表面(10)上的至少一个密封唇(62)。所述第一元件(R)包括在第一元件(R)的径向表面(16)上所实现的提取凹槽(18),并且其在所述密封元件(6)的内表面(68)之下形成空的空间(22)且创建从所述第一元件(R)的轴向端面(14)至所述空的空间(22)的轴向通道。
Description
技术领域
本发明涉及一种旋转组件、一种用于拆卸这种旋转组件的密封元件的方法以及一种用于实施这种方法的提取工具。
背景技术
旋转组件装配有若干个也被命名为《DUSE》密封件的动态密封元件,这些密封元件在被磨损掉时须进行更换。为了拆卸这种密封元件,一些部件比如滚动轴承必须被经常拆卸,从而使得这些密封元件可被提取并且用新的进行更换。
在隧道掘进机、抽油装置或海洋应用中,一些旋转组件在不进行沉重作业和没有工具的情况下不能被拆卸。
发明内容
本发明的目的是提供一种新的旋转组件,其中密封元件可以在没有复杂冗长的操作的情况下被更换。
为此,本发明涉及一种旋转组件,包括:第一元件,其绕着旋转轴线相对于第二元件旋转;至少一个轴承,其布置在所述第一和第二元件之间;以及至少一个密封元件,其布置在所述第一元件和所述第二元件之间,所述密封元件容纳在设置在所述第一元件上的圆周凹槽中,所述密封元件包括依靠在所述第二元件的表面上的至少一个密封唇。所述旋转组件的特征在于,所述第一元件包括在第一元件的径向表面上所实现的提取凹槽,并且其在所述密封元件的内表面之下形成空的空间且创建从所述第一元件的轴向端面至所述空的空间的轴向通道。
由于本发明,可以在不拆卸所述旋转组件的任何其它部件比如轴承的情况下将所述密封元件从旋转组件拆卸和提取。因此,与现有技术的旋转组件相比,更换密封元件需要的时间更少且操作更少。
根据本发明有利的但不是必须的其他方面,这样的旋转组件可包括以下特征中的一个或多个:
-所述提取凹槽在所述第一元件的圆周的扇形区段上平行于所述旋转组件的旋转轴线延伸。
-所述提取凹槽具有部分圆柱形的形状。
-所述提取凹槽具有的半径等于用来实现提取凹槽的加工刀具的半径。
本发明还涉及一种用于拆卸如上所提到的旋转组件的密封元件的方法,其特征在于,其包括的步骤有:
a)将工具插入提取凹槽,使得所述工具的钩部被包括在于所述密封元件和所述提取凹槽之间延伸的空的空间中;
b)通过使工具绕着其纵向轴线旋转来从壳体提升(lift)密封元件,并且在与所述第一元件的轴向端面相对的侧上将所述工具的钩部插在圆周凹槽的径向表面与密封元件的径向表面之间;
c)通过沿着纵向轴线拉动所述工具,将所述密封元件从所述圆周凹槽中提取。
有利地,在步骤c)中,所述密封元件在所述密封唇置于其上的所述第二元件的表面与其上设置有所述提取凹槽的所述第一元件的径向表面之间被径向压缩。
本发明还涉及一种用于实施上述方法的提取工具,其特征在于,其包括细长杆,具有适于由操作者所把持的一个端部,以及适于插在所述密封元件和所述提取凹槽之间的钩部。
根据本发明有利的但不是必须的其他方面,这样的提取工具可结合以下特征中的一个或多个:
-所述钩部垂直于所述细长杆。
-所述钩部具有垂直于所述工具的纵向轴线的扁平形状。
附图说明
下面参照作为说明性示例的附图,对本发明进行说明。在附图中:
-图1是根据本发明的旋转组件的剖视图,
-图2是图1的旋转组件的部分的沿着图4上的平面II-II的剖视图,
-图3是图1的旋转组件的部分的沿着图4上的平面III-III的剖视图,
-图4是根据本发明第一实施例的旋转组件的沿着图2上的箭头IV的视图,
-图5是根据本发明第二实施例的旋转组件的与图4类似的视图,
-图6是与图3类似的视图,根据本发明的提取工具插入图1旋转组件的可旋转元件的提取凹槽,
-图7是与图6类似的视图,图6的提取工具绕其纵向轴线旋转,
-图8是与图6和7类似的视图,旋转组件的密封元件由于图6和7中的提取工具而被提取。
具体实施方式
图1上示出了旋转组件A。旋转组件A包括可旋转元件R和非旋转元件B。可旋转元件R适于绕着旋转轴线X-X'相对于非旋转元件B旋转。
旋转组件A包括轴承系统,其允许可旋转元件R相对于非旋转元件B旋转。这些轴承系统包括两个径向滚子轴承2,其包括具有垂直于轴线X-X'的旋转轴线的滚子,以及一个轴向滚子轴承4,其包括具有平行于轴线X-X'的旋转轴线的滚子。
根据本发明的未示出的实施例,旋转组件A可以包括其它类型的轴承系统,比如球轴承、滚针轴承或滑动轴承。
例如,旋转组件A可能属于隧道掘进机、抽油装置或者海上活动中的任何其他应用或其他。
旋转组件A包括适于防止润滑油(其有利于可旋转元件R相对于非旋转元件B旋转)到组件A之外的密封元件6和8,并且防止外部因素比如灰尘、金属颗粒或海水到旋转组件A里面并且破坏其部件。密封元件6和8旋转地与可旋转元件R联接,并且包括放置在非旋转元件B的相应径向表面10和11上的相应的密封唇62和82。
根据本发明的未示出的实施例,旋转组件A可以仅包括一个密封元件6或8。
密封元件6和8都容纳在可旋转元件R的相应圆周凹槽12和13中。如图2和3所示,圆周凹槽12限定了由平行于轴线X-X'的圆柱形表面所形成的底部120。可旋转元件R包括垂直于轴线X-X'的轴向端面14。圆周凹槽12还限定了第一环形表面122,其垂直于轴线X-X'并且相对于底部120在轴向表面14的侧上径向向外延伸。在环形表面122与端面14之间,可旋转元件R包括径向圆柱形表面16。圆周凹槽12被平行于环形表面122的环形表面124轴向地限制在其与环形表面122相对的侧上。环形表面124的外直径大于环形表面122的外直径。
密封元件6绕中心轴线X6(其对应于图1上的轴线X-X')延伸。沿着轴线X6,密封元件6包括:第一终端表面64,其在密封元件6的安装结构中抵靠着环形表面122;以及终端表面66,其在密封元件6的安装结构中抵靠着环形表面124。密封元件6包括靠着底部120的内圆柱形表面68。密封唇62从位于终端表面66的一侧上的密封唇6的外表面延伸,并且在终端表面64的一侧上沿径向向外。密封唇62从承载表面64、66和68的密封元件6的管状部分63延伸。
在密封元件6磨损的情况下,密封元件6必须被拆卸和更换。为了拆卸密封元件6,可旋转元件R包括提取凹槽18,其在平行于轴线X-X'的圆柱形表面16上从端面14朝向环形表面124延伸。提取凹槽18在可旋转元件R的圆周的扇形区段上延伸。提取凹槽18的深度相对于圆柱形表面16大于圆周凹槽12的深度。提取凹槽18提供在内表面68之下的空的空间22,并且提供从端面14朝向空的空间22和密封元件6的轴向通道。
用于将密封元件6从旋转组件A拆卸的方法包括由将提取工具20插入提取凹槽18构成的第一步骤。提取工具20包括把手200和由钩部203终止的细长杆201(其限定纵向轴线X20)。当提取工具20如图6所示插入提取凹槽18时,钩部203被完全包括在于内表面68和底部120之间延伸的空的空间22中。
该提取方法包括由使提取工具20绕着纵向轴线X20旋转构成的第二步骤,如由箭头F1所示,使得钩部203从底部120提升密封元件6。密封元件6必须被提升,使得内表面68能够从圆周凹槽12出来。然后,由于钩部203的形状(其垂直于细长杆201),可以在与轴向端面14相对的侧上将钩部203插在表面66和120之间。
在第三步骤中,通过沿着纵向轴线X20拉动提取工具20远离旋转组件A,如箭头F2所示,将密封元件6从旋转组件A中提取。在拉动提取工具20远离旋转组件A时,密封元件6被径向压缩,使得密封唇62被推靠着中心管状部分63,以便允许密封元件6在端面14的一侧上的圆柱形径向表面16和圆柱形径向表面10之间被提取。
由于该提取方法,不需要拆卸旋转组件A的任何部件。因此,提取操作及随后的密封元件更换比在现有技术的旋转组件中更简单且更快。
为了便于提取密封元件6或8,提取工具20可以绕着可旋转元件R的整个圆周在槽12和密封元件6或8之间移动,从而绕着槽12的整个圆周从槽12提升密封元件6或8。
提取凹槽18可以具有大致矩形的形状,如图4所示。
根据图5所示的替代实施例,提取凹槽18可以具有部分圆柱形的形状,其具有的半径R18等于用来实现提取凹槽18的加工刀具的半径。
根据本发明的未示出的实施例,钩部203可以是垂直于纵向轴线X20的扁平形状,使得钩部203可以在与端面14相对的侧上很容易地插在密封元件6和提取凹槽18之间。
根据本发明的另一未示出的实施例,密封元件6和8中的至少一个可以安装在非旋转元件B的槽中,而不是可旋转元件R。
Claims (6)
1.一种旋转组件(A),包括:
第一元件(R),其围绕旋转轴线(X-X')旋转地安装到第二元件(B),所述第一元件(R)与所述第二元件(B)隔开径向间隙,且所述第一元件(R)包括在所述第一元件(R)的表面(16)中的所述径向间隙中的圆周凹槽(12);
在所述径向间隙中的至少一个轴承(2、4);以及
在所述圆周凹槽(12)中并延伸到所述径向间隙中的密封元件(6、8),所述密封元件(6、8)包括接触所述第二元件(B)的表面(10)的至少一个密封唇(62),
其中,所述第一元件(R)包括在所述第一元件(R)的表面(16)中的提取凹槽(18),所述提取凹槽(18)从所述第一元件(R)的轴向端部(14)延伸到所述径向间隙中并且延伸到所述圆周凹槽(12)中,所述圆周凹槽(12)中的提取凹槽(18)的端部从所述径向间隙形成与所述密封元件(6)相对的径向空间(22)。
2.根据权利要求1所述的旋转组件,其中,所述提取凹槽(18)在所述第一元件(R)的圆周的扇形区段上平行于所述旋转组件(A)的旋转轴线(X-X')延伸。
3.根据权利要求2所述的旋转组件,其中,所述提取凹槽(18)具有部分圆柱形形状。
4.根据权利要求3所述的旋转组件,其中,所述提取凹槽(18)的半径(R18)等于用来形成提取凹槽(18)的加工刀具的半径。
5.一种用于拆卸根据权利要求1所述的旋转组件(A)的密封元件(6、8)的方法,其中,所述方法包括的步骤有:
a)将工具(20)插入提取凹槽(18)中,使得所述工具(20)的钩部(203)被包括在于所述密封元件(6)和所述提取凹槽(18)之间延伸的空的空间(22)中;
b)通过使工具(20)绕着其纵向轴线(X20)旋转将密封元件(6)从其凹槽(12)提升,并且将所述工具(20)的钩部(203)插在所述圆周凹槽(12)的径向表面(120)与密封元件(6)的、位于与所述第一元件(R)的轴向端面(14)相对的一侧的径向表面(66)之间;
c)通过沿着其纵向轴线(X20)拉动所述工具(20),将所述密封元件(6)从所述圆周凹槽(12)中提取出。
6.根据权利要求5所述的方法,其中,在步骤c)中,所述密封元件(6)在所述密封唇(62)抵靠其上的所述第二元件(B)的表面(10)和其上设置有所述提取凹槽(18)的所述第一元件(R)的径向表面(16)之间被径向压缩。
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EP13186495.1A EP2853351B1 (en) | 2013-09-27 | 2013-09-27 | Rotative assembly, method for dismounting a sealing element and extraction tool for dismounting a sealing element |
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CN104736891B (zh) * | 2012-10-25 | 2017-12-01 | Ntn株式会社 | 带轮臂的支点轴承装置 |
DE102017102033B3 (de) * | 2017-02-02 | 2018-01-25 | Voith Patent Gmbh | Leitschaufellager und Verfahren zur Wartung |
DE102017219823A1 (de) * | 2017-11-08 | 2019-05-09 | Aktiebolaget Skf | Wälzlager zum Unterstützen einer radialen Verformung des Wälzlagers und rotierende Anordnung, welche ein solches Wälzlager aufweist |
DE102018213812A1 (de) * | 2018-08-16 | 2020-02-20 | Conti Temic Microelectronic Gmbh | Montagevorrichtung zum Einsetzen eines Dichtungsringes in die Nut eines Bauteils |
ES2750877B2 (es) * | 2018-09-26 | 2021-06-11 | Laulagun Bearings S L | Herramienta de montaje de retenes en rodamientos |
CN110480565B (zh) * | 2019-09-17 | 2023-05-30 | 中密控股股份有限公司 | 一种旋转机械轴端密封安装工具及其安装方法 |
US11971105B2 (en) | 2019-12-12 | 2024-04-30 | Single Buoy Moorings Inc. | Swivel comprising a sealing arrangement |
DE102019220284A1 (de) * | 2019-12-19 | 2021-06-24 | Aktiebolaget Skf | Wälzlager mit Drahtlaufringen |
DE102019220292A1 (de) | 2019-12-19 | 2021-06-24 | Aktiebolaget Skf | Wälzlager mit Drahtlaufringen und Halterippe |
EP4390057A1 (en) * | 2022-12-22 | 2024-06-26 | ANSALDO ENERGIA S.p.A. | Portable device and method for extracting a circumferential seal from its seat, in particular a labyrinth seal, in a turbine power plant assembly |
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