CN1025361C - 油膜轴承的轴瓦及其应用 - Google Patents
油膜轴承的轴瓦及其应用 Download PDFInfo
- Publication number
- CN1025361C CN1025361C CN91101237A CN91101237A CN1025361C CN 1025361 C CN1025361 C CN 1025361C CN 91101237 A CN91101237 A CN 91101237A CN 91101237 A CN91101237 A CN 91101237A CN 1025361 C CN1025361 C CN 1025361C
- Authority
- CN
- China
- Prior art keywords
- groove
- bearing
- bearing shell
- described bearing
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0651—Details of the bearing area per se
- F16C32/0659—Details of the bearing area per se of pockets or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/07—Adaptation of roll neck bearings
- B21B31/074—Oil film bearings, e.g. "Morgoil" 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1075—Wedges, e.g. ramps or lobes, for generating pressure
-
- 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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Compressor (AREA)
Abstract
一种油膜轴承组件的轴瓦,在其内轴承面负荷区有若干条液压静力润滑油凹槽,每一凹槽由双曲旋转面和轴承面相交而被确定,因此,所述凹槽取某个长球的一部分的形状,具有大致椭圆形倾斜薄边的周缘。所述轴瓦可旋转地支承着一个轧机辊颈的轴颈面。
Description
本发明涉及用于旋转支承轧机辊颈的轴颈表面的这类油膜轴承的改进及其应用。
在典型的油膜轴承轧机应用方面,如图1和2中多少用图解描绘的那样,轧辊10有一颈部12,颈部12如所示那样可能是锥形的,或者可能是圆柱形的。轴套14用一个或或几个键13安装在颈部12处,可以转动。轴套的外部构成了辊颈的轴颈表面16,轴瓦18有一包围并旋转支承轴颈面16的内轴承面20。轴瓦装于并固定于轧辊轴承座22内。轴承座适于被支承在轧机机座内(未示出),并在外侧端被一端板24和罩26封闭。封闭组件28装在轧辊和轴承座22的内侧端之间。密封组件起到将润滑油保持在轴承内,同时又防止润滑油和内轴承组件被冷却水、轧屑等污染的作用。
在轧机正常运转期间,当轧辊按图2中箭头所示方向以适于全负荷液压动力运转的速度旋转时,一般连续的润滑油流经轴承座内的通道29、轴承内的输油孔30被输送到轴承面20上的重镗孔32。从这里,润滑油进入轴承面20和旋转轴颈面16之间的缝隙而在轴承负荷区“Z”形成一种液压动力保持油膜34,负荷区处于被施加到轧辊上的负荷区“L”的相反侧。
润滑油终究要从轴颈面16和轴承面20之间轴向泄出,并盛在内外侧盛油槽36,38内。润滑油在回到轴承之前,从这里经滤清器、冷却装置等(未示出)进行再循环。
如果轴颈面16的旋转速度、负荷L和润滑油的粘度均保持在设计
极限内,那么轴承会继续满意地工作,有足够的油膜34液压动力保持在负荷区Z。然而,如果这些参数中的一个处于低于设计下限,那么液压动力保持的油膜可能损坏或毁坏,导致轴颈16和轴承面20之间金属和金属的接触。若出现这一情况,所产生的摩擦力会很快引起轴承故障。
因此,自轧机起动的零转到满意的液压动力运转的设计下限,必须通过不同于上述液压动力技术的手段在负荷区Z形成并保持油膜34。为此,附带参照图3-5,在现有技术的传统轴承组件中,在负荷区Z处的轴承表面20上设置多个液压静力油槽40是公知的。油槽40经通道42的网络系统被连接到一个正排量、等容高压润滑泵44上。
正如从轴瓦内部很快看到的,传统的现有技术结构的油槽40通常为矩形。油槽的二端为倾斜薄边,如在46处那样,而底48和侧壁50是相互垂直的,从而构成了尖的底角52。侧壁50垂直于轴承面20,从而构成尖的顶缘。
就这种结构而言,由于滑滑油从各油槽40涌出,以液压静力方式形成油膜34,因此,当它强制轴向流入尖缘53和轴承面20之间遭受了极大的阻力,从而经受了明显的压力降。最后结果是,为了在油膜34内保持给定的油压,在油槽40内必须保持相当高的油压。这又意味着泵44更艰苦地工作,而整个润滑系统必须被设计成以更高的压力来工作。
还可以看到,自各油槽40的倾斜薄边二端46处沿周围涌出的润滑油遇到和通过尖缘53轴向涌出的润滑油所遇到的阻力相比相当小的阻力。这样在损失轴向流量的情况下促进了周围流量,这又对整个负荷区的润滑油压力场有不利的影响。所述润滑油压力场支承负荷区的负荷。
传统设计的另一缺点是在底角52处有高度应力集中,这能产生裂
纹并造成轴承故障。而且,在尖缘53处流动截面的突然变化引起较高的流动速度,这又加速金属冲蚀。
因此,本发明的目的是要提供一种具有新的和改进了的液压静力油槽结构的轴瓦,它或者避免或者起码大大减少和现有技术相关的一些问题。
本发明的又一目的在于提供一种上述轴瓦在油膜轴承组件中的应用方法,它能改善润滑油在整个负荷区的分布。
本发明的技术方案是在US-A-3,761,149基础上的改进。该文件公开了一种用于旋转支承轧机辊颈的轴颈面这类油膜轴承组件中的轴瓦,所述轴瓦包括:
具有适于包围所述轴颈面的内圆柱轴承面的薄壁;
穿过所述薄壁用于将压力液体润滑剂输送到所述轴承面和所述轴颈面之间的负荷区的输油道装置;以及
在负荷区内的上述轴承面上的至少一条液压凹槽,该凹槽有一条沿垂直于轴瓦纵轴线方向延伸的长轴和一条沿平行于轴瓦纵轴线方向延伸的短轴,所述凹槽跟所述输油装置连通以便盛容被输入的压力润滑剂、并以分隔所述轴颈面和所述轴承面的润滑剂膜形成将它分布到所述负荷区。
本发明改进之处在于,所述凹槽由双曲旋转面和轴承面的交界所确定的连续周缘所界定,该凹槽的深度由上述周缘处的零值逐渐加大至凹槽中心处的最大值。
本发明的轴瓦在油膜轴承组件中应用的特征在于,所述轴承可旋转地支承着一个轧机辊颈的轴颈面。
据此,以下描述一种具有液压凹槽的改进轴瓦,当自轴瓦内部内径向方向看时,凹槽具有基本上椭圆形的周围倾斜薄边。凹槽的长轴相对于轴瓦轴线横向延伸,而凹槽的短轴平行于轴瓦轴线延伸。每一
凹槽的深度是不均匀的,从其周围倾斜薄边逐渐增加到凹槽长短轴线交点处的最大值。
现在参照附图通过例子来叙述本发明的实施例,其中:
图1是经包括一种传统结构轴瓦的油膜轴承组件所取的纵剖面图;
图2是沿图1的2-2线所取的放大比例的横剖面图;
图3是沿图2的3-3线所取的剖视图;
图4是示于图2中的局部横剖面图的放大视图;
图5是沿图4的5-5线所取的横剖面图;
图6是类似于图3的视图,但放大了比例,并表示出本发明的轴瓦;
图7和图8是分别沿图6的7-7线和8-8线所取的显著放大比例的剖视图;
图9和图10是分别沿图7的9-9线和10-10线所取的剖视图;
图11是关于在轴瓦的内轴承面处本发明的凹槽如何被改进的筒图;
图12是按图11的12-12线所取的放大视图;
图13是类似于图4的视图,表示被装入轴承组件的本发明轴瓦;
图14是沿图13的14-14线所取的剖面图。
现在参看图6-14,本发明的轴瓦以标号60表示。该轴瓦有一圆柱形内轴承面62,一对液压静力凹槽64对称地配置轴承中心的相反两侧。
每一凹槽64为一连续的倾斜薄边66所包围,当从轴瓦内部径向看时(如图6中所示),它的轮廓大体上为椭圆形,其长轴X相对于轴瓦纵轴线A垂直延伸,其短轴Y平行于轴线A延伸。
如图11和12所示,每一凹槽64是由圆环曲面68和内轴承面62相交
确定的。圆环曲面68是由平面曲线70绕轴线B旋转形成的。曲线70实际上构成以R1为半径的切口外形。圆环曲面68有一半径R2,轴线B处于轴瓦轴线A内方并平行于轴瓦轴线A。
参照图7和8,可以看到,垂直于主轴线X所取的连续的剖面确定了分别具有半径R1的圆缺。从凹槽中心向其二端发展,每一个这样的圆缺有一逐渐减小的深度d和宽度w。同样,参照图9和10,垂直于短轴Y的连续面确定了各具半径R2的圆缺。仍然从凹槽中心向其二端发展,这些连续的圆缺具有逐渐减小的深度d和长度l。可以看见,每一凹槽64确定了球面的某一部分。
图13和14表示装于油膜轴承组件内的本发明的轴瓦。不是先有技术凹槽40的尖角边缘,而是本发明凹槽64的连续倾斜薄边的周缘66为平稳和低速的轴向涌出油流提出显著低的伴生压力降。因此为在液压静力保持油膜34内维持某一给定的压力,只需在凹槽64内保持较低的油压。较低的润滑油速度降低了凹槽周缘66的冲蚀,而尖角的消除显著减少了潜在有害的应力。
此外,由于凹槽二端宽度W减小而造成逐渐缩小的周围流道(比较图7和8)阻止了周围油流,并还促进轴向油流,因而改善了润滑油在整个负荷区的分布。
Claims (10)
1、一种用于旋转支承轧机辊颈(12)的轴颈面(16)这类油膜轴承组件(34)中的轴瓦(60),所述轴瓦包括:
具有适于包围所述轴颈面(16)的内圆柱轴承面(62)的薄壁(60);
穿过所述薄壁(60)用于将压力液体润滑剂输送到所述轴承面(62)和所述轴颈面(16)之间的负荷区(Z)的输油道装置(42);以及
在负荷区(Z)内的上述轴承面(62)上的至少一条液压凹槽(64),凹槽(64)有一条沿垂直于轴瓦纵轴线(A)方向延伸的长轴(X)和一条沿平行于轴瓦纵轴线(A)方向延伸的短轴(Y),所述凹槽(64)跟所述输油装置(42)连通以便盛容被输入的压力润滑剂、并以分隔所述轴颈面(16)和所述轴承面(62)的润滑剂膜形式将它分布到所述负荷区(Z),
其特征在于,所述凹槽(64)由以曲旋转面(68)和轴承面(62)的交界所确定的连续周缘(66)所界定,凹槽(64)的深度由上述周缘(66)处的零值逐渐加大至凹槽(64)中心处的最大值。
2、按权利要求1所述的轴瓦,其特征在于,所述双曲旋转面(68)是一圆环曲面。
3、按权利要求2所述的轴瓦,其特征在于,所述双曲面(68)的旋转轴线(B)平行于所述轴瓦(60)的纵轴线(A),并为所述轴承面(62)所包围。
4、按权利要求3所述的轴瓦,其特征在于,所述双曲旋转面(68)的回转半径小于所述轴承面的半径。
5、按权利要求1所述的轴瓦,其特征在于,所述凹槽(64)确定了长球面的一部分。
6、按权利要求1所述的轴瓦,其特征在于,所述凹槽(64)具有基本椭圆的周缘(66)。
7、按权利要求1所述的轴瓦,其特征在于,沿垂直于所述长轴(X)方向经所述凹槽(64)所取的各横截面确定了各圆缺。
8、按权利要求1所述的轴瓦,其特征在于,沿垂直于所述短轴(Y)方向经所述凹槽(64)所取的各横截面确定了各圆缺。
9、按权利要求1所述的轴瓦,其特征在于,所述轴承在轴承面(68)上有一对凹槽(64),凹槽(64)相对于轴承的中心对称布置。
10、权利要求1所述的轴瓦在油膜轴承组件中的应用,其特征在于,所述轴瓦(60)可旋转地支承着一个轧机辊颈(12)的轴颈面(16)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/487,287 US5000584A (en) | 1990-03-02 | 1990-03-02 | Bushing for oil film bearing |
US487,287 | 1990-03-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1054548A CN1054548A (zh) | 1991-09-18 |
CN1025361C true CN1025361C (zh) | 1994-07-06 |
Family
ID=23935125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN91101237A Expired - Lifetime CN1025361C (zh) | 1990-03-02 | 1991-03-02 | 油膜轴承的轴瓦及其应用 |
Country Status (10)
Country | Link |
---|---|
US (1) | US5000584A (zh) |
EP (1) | EP0445472B1 (zh) |
JP (1) | JP2501247B2 (zh) |
CN (1) | CN1025361C (zh) |
AT (1) | ATE102303T1 (zh) |
BR (1) | BR9100450A (zh) |
CA (1) | CA2032586C (zh) |
DE (1) | DE69007079T2 (zh) |
ES (1) | ES2049935T3 (zh) |
MX (1) | MX165039B (zh) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5137418A (en) * | 1990-12-21 | 1992-08-11 | Roy E. Roth Company | Floating self-centering turbine impeller |
BR9100852A (pt) * | 1991-02-25 | 1992-10-27 | Metal Leve Sa | Mancal deslizante |
US5503478A (en) * | 1995-04-03 | 1996-04-02 | Federal-Mogul Corporation | Lubricant distribution system for bearings and bushings |
US5720558A (en) * | 1995-10-16 | 1998-02-24 | Dresser-Rand Company | Tilting bearing pad with an axial feed groove having an exit side profiled area |
US6095690A (en) * | 1996-01-30 | 2000-08-01 | Glyco-Metall-Werke Glyco B.V. & Co. Kg | Sliding bearing element with lubricating oil pockets |
US6123461A (en) * | 1998-08-24 | 2000-09-26 | Morgan Construction Company | Oil film bearing sleeve and keying arrangement |
JP2002155946A (ja) * | 2000-11-20 | 2002-05-31 | Daido Metal Co Ltd | 軸支承部材 |
TW515871B (en) * | 2001-08-21 | 2003-01-01 | Ind Tech Res Inst | Dynamic-static mixing pressure fluid bearings and method of manufacturing same |
US6604859B1 (en) * | 2002-01-23 | 2003-08-12 | Morgan Construction Company | Bushing for oil film bearing |
DE10336894A1 (de) * | 2003-08-08 | 2005-03-10 | Sms Demag Ag | Ölfilmlager für Walzenzapfen mit hydrostatischer Unterstützung |
US20050281499A1 (en) * | 2004-06-22 | 2005-12-22 | Wojtkowski Thomas Jr | Oil outlet for rolling mill oil film bearing |
KR100711444B1 (ko) * | 2005-12-23 | 2007-04-24 | 주식회사 포스코 | 도금조 롤의 축수부장치 |
US7637895B2 (en) * | 2006-08-22 | 2009-12-29 | Nalin David R | System and device for medically treating an individual |
CN100464884C (zh) * | 2006-12-07 | 2009-03-04 | 郑红专 | 自润滑分段轧辊座 |
US7708466B2 (en) * | 2007-05-21 | 2010-05-04 | Adda Corp. | Lubricated bushing |
DE102008054715A1 (de) * | 2008-12-16 | 2010-06-17 | Voith Patent Gmbh | Lagerung für eine rotierbare und durch Schwingungsanregung in Richtung iher Rotationsachse bewegbare Walze, insbesondere Brustwalze und Verfahren zur Steuerung der Betriebsweise einer derartigen Walze |
ES2395350B1 (es) * | 2011-02-02 | 2014-09-09 | Fagor, S. Coop. | Prensa mecánica adaptada a procesos de conformado, en particular procesos de conformado en caliente |
DE102011005466B9 (de) * | 2011-03-11 | 2012-12-06 | Federal-Mogul Wiesbaden Gmbh | Gleitlagerschale |
US20130004103A1 (en) * | 2011-06-30 | 2013-01-03 | Caterpillar, Inc. | Sleeve Bearing with Shell Portions of Unequal Extent |
US9016099B2 (en) | 2011-09-29 | 2015-04-28 | Siemens Industry, Inc. | Hybrid hydrodynamic and hydrostatic bearing bushing and lubrication system for rolling mill |
DE102012208966A1 (de) * | 2012-05-29 | 2013-12-05 | Continental Automotive Gmbh | Abgasturbolader mit Schwimmbuchsenlager |
CN102854013B (zh) * | 2012-08-22 | 2014-12-17 | 太原科技大学 | 一种综合油膜轴承试验装置 |
CN104903601B (zh) * | 2013-01-31 | 2018-09-14 | 三菱日立电力系统株式会社 | 倾斜垫片轴承装置 |
US9279446B2 (en) * | 2013-03-09 | 2016-03-08 | Waukesha Bearings Corporation | Bearing with axial variation |
US9284976B2 (en) | 2013-03-09 | 2016-03-15 | Waukesha Bearings Corporation | Countershaft |
JP5727548B2 (ja) * | 2013-06-10 | 2015-06-03 | ファナック株式会社 | 射出成形機の滑り軸受け |
CN105134781A (zh) * | 2014-08-08 | 2015-12-09 | 摩尔动力(北京)技术股份有限公司 | 流体定向悬浮系统 |
US10006486B2 (en) * | 2015-03-05 | 2018-06-26 | Primetals Technologies USA LLC | Spherical oil film bearing |
DE102015209637A1 (de) * | 2015-05-26 | 2016-12-01 | Sms Group Gmbh | Walzenanordnung |
JP6529549B2 (ja) * | 2017-07-31 | 2019-06-12 | 大同メタル工業株式会社 | 半割軸受およびすべり軸受 |
JP6577003B2 (ja) * | 2017-11-17 | 2019-09-18 | 大同メタル工業株式会社 | 半割軸受およびすべり軸受 |
CN108571514B (zh) * | 2018-06-25 | 2020-06-16 | 西安交通大学 | 一种用于径向滑动轴承的半椭圆形分布织构化表面 |
CN109458399A (zh) * | 2019-01-11 | 2019-03-12 | 哈尔滨工程大学 | 一种周向变壁厚轴瓦 |
US12018701B2 (en) * | 2020-09-24 | 2024-06-25 | Flowserve Pte. Ltd. | Hydraulic bearings and related devices, assemblies, and methods |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1746020A (en) * | 1928-05-02 | 1930-02-04 | Himself As Trustee | Bearing |
US3385009A (en) * | 1964-02-03 | 1968-05-28 | Landis Tool Co | Spindle bearings |
DE1450034A1 (de) * | 1964-05-02 | 1969-09-04 | Schmidt Gmbh Karl | Gleitlager mit Schmiermittelnuten |
FR1473978A (fr) * | 1966-01-07 | 1967-03-24 | Cem Comp Electro Mec | Palier à gaz aérostatique |
US3453031A (en) * | 1967-04-06 | 1969-07-01 | Morgan Construction Co | Bearing assembly |
NL7015119A (zh) * | 1970-10-15 | 1972-04-18 | ||
DE2537046A1 (de) * | 1975-08-20 | 1977-03-03 | Schmidt Gmbh Karl | Radiallager |
US4159152A (en) * | 1977-10-11 | 1979-06-26 | Morgan Construction Company | Means for lubricating the roll neck/sleeve interface of an oil film bearing |
JPS5481038U (zh) * | 1977-11-18 | 1979-06-08 | ||
JPS54106443U (zh) * | 1978-01-11 | 1979-07-26 | ||
JPS6240332U (zh) * | 1985-08-30 | 1987-03-10 | ||
US4772137A (en) * | 1987-03-30 | 1988-09-20 | Morgan Construction Company | Oil film bearing and bushing |
DD271629A3 (de) * | 1987-11-23 | 1989-09-13 | Schwermasch Liebknecht Veb K | Radialgleitlager |
-
1990
- 1990-03-02 US US07/487,287 patent/US5000584A/en not_active Expired - Lifetime
- 1990-12-18 CA CA002032586A patent/CA2032586C/en not_active Expired - Lifetime
- 1990-12-20 ES ES90314011T patent/ES2049935T3/es not_active Expired - Lifetime
- 1990-12-20 AT AT90314011T patent/ATE102303T1/de not_active IP Right Cessation
- 1990-12-20 DE DE69007079T patent/DE69007079T2/de not_active Expired - Lifetime
- 1990-12-20 EP EP90314011A patent/EP0445472B1/en not_active Expired - Lifetime
-
1991
- 1991-01-23 JP JP3021364A patent/JP2501247B2/ja not_active Expired - Lifetime
- 1991-02-05 BR BR919100450A patent/BR9100450A/pt not_active IP Right Cessation
- 1991-02-26 MX MX24695A patent/MX165039B/es unknown
- 1991-03-02 CN CN91101237A patent/CN1025361C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2032586A1 (en) | 1991-09-03 |
EP0445472B1 (en) | 1994-03-02 |
EP0445472A1 (en) | 1991-09-11 |
DE69007079D1 (de) | 1994-04-07 |
BR9100450A (pt) | 1991-10-22 |
JPH04331816A (ja) | 1992-11-19 |
DE69007079T2 (de) | 1994-06-01 |
ATE102303T1 (de) | 1994-03-15 |
MX165039B (es) | 1992-10-16 |
US5000584A (en) | 1991-03-19 |
CA2032586C (en) | 1993-09-14 |
CN1054548A (zh) | 1991-09-18 |
JP2501247B2 (ja) | 1996-05-29 |
ES2049935T3 (es) | 1994-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1025361C (zh) | 油膜轴承的轴瓦及其应用 | |
CN1203934C (zh) | 用于轧钢机油膜轴承的套筒 | |
CN107061501B (zh) | 异形微型阶梯轴承 | |
CN1147667C (zh) | 止推轴承 | |
US4671676A (en) | Hydrostatic bearing | |
US3517973A (en) | Device for supporting two elements movably with respect to each other | |
EP1035013B1 (en) | Contra-rotating bearing device for contra-rotating propeller | |
CN104863971B (zh) | 运用物理吸附形成的同心微型向心滑动轴承 | |
US5593230A (en) | Air bearing | |
US3472565A (en) | Externally pressurized bearing structure | |
CN109944871B (zh) | 一种液体动压径向轴承及离心泵 | |
CA1264609A (en) | Stern tube bearing system of contra-rotating propeller | |
US3172304A (en) | Multiple surface bearing | |
CN1084618A (zh) | 自泵油润滑式径向力滑动轴承 | |
CN1626840A (zh) | 三油楔变曲率滑动轴承 | |
CN110043568B (zh) | 一种轴承孔表面处油膜滑移的减摩节能向心滑动轴承 | |
US5699715A (en) | Piston for a reciprocating piston machine | |
DE3614257A1 (de) | Hydraulische schiefscheiben-axialkolbenmaschine | |
CN1091850C (zh) | V型内燃机的连杆支承构造 | |
US3718259A (en) | Mechanical separator for viscous fluids | |
JP2578567B2 (ja) | 無偏心の摺動負荷軸受 | |
JPH03204411A (ja) | 非対称溝付動圧空気軸受 | |
CN86105066A (zh) | 一种静压轴承或静压流体垫装置 | |
SU1217508A1 (ru) | Гидродинамическа опора прокатного валка | |
CN115853892A (zh) | 圆心偏置型线滑动轴承 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
OR01 | Other related matters | ||
C17 | Cessation of patent right | ||
CX01 | Expiry of patent term |
Expiration termination date: 20110302 Granted publication date: 19940706 |