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CN1017178B - 挠度可控制轧辊的端部横向密封 - Google Patents

挠度可控制轧辊的端部横向密封

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Publication number
CN1017178B
CN1017178B CN90104243A CN90104243A CN1017178B CN 1017178 B CN1017178 B CN 1017178B CN 90104243 A CN90104243 A CN 90104243A CN 90104243 A CN90104243 A CN 90104243A CN 1017178 B CN1017178 B CN 1017178B
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China
Prior art keywords
ring
chamber
crossbeam
slip
slip ring
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CN90104243A
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CN1048083A (zh
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卡尔·汉兹
昆特·西尔奥斯·库斯特斯
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Edward Kusters Maschinenfabrik & Co KG GmbH
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Edward Kusters Maschinenfabrik & Co KG GmbH
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Publication of CN1048083A publication Critical patent/CN1048083A/zh
Publication of CN1017178B publication Critical patent/CN1017178B/zh
Expired legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • B21B27/03Sleeved rolls
    • B21B27/05Sleeved rolls with deflectable sleeves
    • B21B27/055Sleeved rolls with deflectable sleeves with sleeves radially deflectable on a stationary beam by means of hydraulic supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00Special constructions, e.g. surface features, of feed or guide rollers for webs
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21GCALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00Calenders; Smoothing apparatus
    • D21G1/02Rolls; Their bearings
    • D21G1/0206Controlled deflection rolls
    • D21G1/0213Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
    • D21G1/022Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02Bearings
    • F16C13/022Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
    • F16C13/024Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle
    • F16C13/026Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/34Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • F16J15/342Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with means for feeding fluid directly to the face
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/10Rollers
    • B65H2404/13Details of longitudinal profile
    • B65H2404/137Means for varying longitudinal profiles
    • B65H2404/1372Means for varying longitudinal profiles anti-deflection

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geometry (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Mechanical Sealing (AREA)
  • Sealing Devices (AREA)

Abstract

由滑环密封装置(8、10)构成的挠度可控制辊的端部横向密封装置,具有固定的横梁(1)和旋转的空心辊(2),此装置在滑环(10)的滑动面(9)上设有一个液压卸载用的腔室(19)。沿径向在腔室(19)之外设一环槽(30),它经过通道(26)与低压侧连通,以排出在位置(27)处从高压腔(20)侵入的压力液体。

Description

本发明涉及一种挠度可控制辊的端部横向密封装置。挠度可控制辊有一个构成辊工作圆周面的可旋转空心辊和一个与空心辊内圆周面沿纵向形成环状间隔的不可旋转横梁;有一个装在横梁上支承在空心辊内圆周面上的液压支承装置。端部横向密封装置装在空心辊的端部,它使空心辊和横梁间的压力腔对外密封。端部横向密封装置由滑环密封件构成,它设在与辊轴线垂直的滑动平面中。沿轴向可移动的滑环上至少有一个朝滑动面开口的腔室,此腔室顺周向配置,并在与滑动面平行的各方向均被封闭住,从空心辊和横梁间的空腔来的压力液体流入此腔室。
这类端部横向密封装置用来沿轴向密封旋转空心辊和固定横梁之间的内压,防止其向外漏泄。当液压支承装置系由充满压力液体的半柱面碗形腔组成时便存在此内压,用端部横向密封装置和横梁两端的纵向密封装置使碗形腔与其余的腔室隔开,例如在JP-GM-AS62-17520中的情况那样。在DE-PS    2025777中介绍了一种类似的端部横向密封装置。上述情况中,端部横向密封装置作为用纵向密封装置隔开的半柱面碗形的所谓S-辊腔的边界,它沿周向延伸约180°。在DE-PS    3003395中情况相同,它的S-辊腔中的压力被密封元件所改变,省去了低压腔。
但还有一些如DE-OS    3640902所介绍的那种情况,这时,在空心辊和横梁间的全部空腔沿360°充满压力液体。在这 种情况下,端部横向密封装置当然也应延伸至360°。
在许多情况下,端部横向密封装置应加以密封的压力为数十巴。彼此紧贴的滑动面处可有高至1000米/分的圆周速度,它最终可使液压的压力液体具有250℃甚至更高的温度。在如此困难的工作条件下,在压力侧的压力液体有沿径向从外部渗入滑环,并使它与固定的支承环分离的倾向,其结果是破坏了密封效果。
本发明的任务是:使端部横向密封装置能最佳地与所述类型的轧辊中的困难工作条件相适应,即在横梁相对于空心辊具有高转速和大挠度时,与轧辊内部中存在高压高温的条件相适应。
因此,在滑动面处从压力侧径向地侵入的压力液体可立即被排往低压侧,不再能在滑动面中形成使之分离的压力。在腔室两侧,滑环良好地贴靠并起密封作用,腔室用来为在高压侧的高压作用下压在滑动面上的滑环卸载。滑环可具体地按下列方式设计和密封:滑环用一个沿圆周闭合的外部轴向凸台套在横梁的一个台阶上,凸台下设有一个横梁的圆周槽,槽底装有“O”形环,“O”形环上面装有一个用滑动性能良好的材料制成的环,此环充满槽的宽度,并紧密地压靠在凸台内圆周面上。在这种情况下,滑环与横梁之间具有完善的密封效果,在空心辊和尤其是横梁弯曲时,滑环会相对于横梁移动。压靠在滑环凸台上的环可用聚四氟乙烯制造,因为这种材料滑动性好,同时它还是一种在一定程度上可弯曲的材料。
在一个实施例中,槽与低压侧的连通可利用一个通道来实现,通道基本上沿轴向贯穿滑环,它一般是一个孔。
若腔室沿周向分割成多个单个腔室,它们之间留有间隔,则槽 和低压侧的连接还有另一种可能性,即在间隔处设置朝滑动面开口的通道,此通道从槽出发,沿径向一直通往低压侧。
从端部横向密封装置的一个槽出发径向地向内的通道取自未公开的DE-OS    3813596中的现有技术。但该处并未涉及进行轴向压紧的滑环密封装置。由DE-OS    3813596中已知的密封装置,确切地说是径向液压地压在空心辊内圆周面上,径向通道用作滑动面液压卸载所需压力的分路。
附图表示了本发明的实施例。
图1    具有本发明端部横向密封装置的挠度可控制辊右端局部纵剖面;
图2    沿图1Ⅱ-Ⅱ线的端部横向密封装置180°范围的局部视图;
图3和图4按图2Ⅲ-Ⅲ和Ⅳ-Ⅳ线的剖视图。
图1中其总体用标号100表示的辊,包括一根不可旋转的横梁1,围绕横梁旋转并构成辊外圆周工作面的空心辊2,空心辊的内圆周面4与横梁外圆周面5之间留有间距。空心辊2的两端通过球面滚柱轴承6支承在横梁1上。在球面滚柱轴承6和在空心辊2内圆周面4上的台阶7之间装有支承环8,它与空心辊2一起绕横梁1旋转,并在其朝内的一侧提供一个与空心辊2的轴线垂直的滑动面9,支承在横梁1上并可相对于横梁在一定范围内移动的滑环10紧靠在滑动面9上。
滑环10的横截面基本上为矩形,它装在横梁的台阶11前,并通过设在外部的轴向凸台12套在台阶11上。在凸台12和台阶11相套区域内的台阶上,制有一个径向向外开口的圆周槽13,槽底装 有“O”形环14,“O”形环14外面装有基本上为矩形截面的聚四氟乙烯环15。环15以其外侧紧密地靠在凸台12的内圆周面16上。内圆周面16和横梁1上与之相邻的外圆周面之间留有一个环状间隙,故滑环10可相对于横梁1略作移动,以便在辊100受载时能令人满意地承受横梁1的挠曲。
滑环10用位于台阶11前轴向的螺旋形弹簧17压向支承环8,并通过沿圆周分布的螺钉18防止转动。
滑环10上朝向滑动面的一侧有多个连起来几乎占整个圆周的腔室19,它们各通过一个图1中仅示意表示的节流通道21,与空心辊2内圆周面4和横梁1外圆周表面5之间构成的高压腔20相通。
图2和3表示结构的详细情况。通道21包括一个轴向孔22,轴向孔与腔室19连通,它的另一端用栓塞24封闭。栓塞24和腔室19之间制有一个径向孔23,它与高压腔20连通,并有压力液体流入,液体经过设在孔22中的节流器25节流后流入腔室19。
如图2所示,在此实施例中沿圆周分布六个腔室19,它们各通过一个通道21与腔20相连。
沿径向在腔室19之外,在滑环10朝向滑动面9的那一个端面上距外边缘仅几毫米处,制有一个例如深度和宽度为3毫米贯通360°的窄槽30,槽30经一个或多个在图1中只作简单表示而在图4中可见其详细情况的通道26与低压端相连,亦即在本实施例中与滑环10上和滑动面9相背的另一个端面36相通,端面36通过一对密封环14、15与高压腔20隔开。端面36与台阶11之间有轴向间距。同样,滑环10的内圆周面37与横梁1上相邻部分之间有径向间距。经通道26流入的压力液体可经由这些由间距形成的空腔流 出。以此方式可及时排出在图4的27处从高压腔20侵入的压力液体,以防此压力液体将滑环10推离滑动面9,从而保证滑环10在腔室19所在区域的可靠密封和良好滑动不受损害。
由高压腔20经滑动面9和密封环15处流出的漏泄液,可经通道28吸出。
图2中表示了一种替代通道26的方案,显然,只有在腔室19未沿圆周贯通,而是分成只占圆周一个扇形段的一个个腔室,并在扇形段之间留下间隔31的情况下,才能采用这种方案。朝滑动面9开口的径向槽32从圆周槽30出发,穿过这些间隔31,一直通至内部。由于槽30有了通往低压侧的通道,因此同样可使槽30卸压。相邻的腔室19彼此不允许导通,也就是说,它们必须在滑动面9中沿所有方向封闭,否则它们将不能正常工作。
空心辊2的端部用盖33封闭,盖33用螺钉34与空心辊2连接。与空心辊2一起旋转的盖33用另一个滑环密封装置35相对于横梁1密封,不过它无需密封特别高的压力,而只需防止压力液体从辊内流出。

Claims (3)

1、挠度可控制辊的端部横向密封装置,挠度可控制辊有一个具有一纵轴,一内圆周面和一外工作圆周面的可旋转空心辊,一个与空心辊内圆周面沿纵向形成环状间隙的不可旋转横梁,一个在具有不同直径的横梁各部分之间形成的沿径向伸展的凸阶,和一个装在横梁上支承在空心辊内圆周面上的液压支承装置,端部横向密封装置可装在空心辊的端部,以封密环状间隙,其特征在于,所述端部横向密封装置包括:
一个滑环,它有一个第一侧面,位于与空心辊轴线垂直的滑动面中,和一个远离第一侧面的第二侧面,并可与一低压源接通,滑环装在横梁上后可以沿平行于纵轴的方向位移,
一个在滑环外圆周面上形成的轴向伸展的环形凸台,该凸台具有一内圆周面并从第二侧面环处延伸,该环在横梁的轴向延伸的台阶上轴向延伸;
一个环形密封件,密封地支承在滑环的轴向延伸的台阶上,
至少一个周向延伸的腔室,位于滑环的第一侧面处,并封闭在滑动面中,腔室有一个沿平行于纵轴方向延伸的开口,
一个由可旋转的空心辊支承的面,滑环的第一侧面与该面相接,在其间形成一密封,腔室中的开口正对着该面,
一个槽,位于滑环的第一侧面中,并在其整个周面上延伸,该槽在腔室径向外径,正对着所述的面,并与低压源相通,压力流体可从环形间隙经该槽引入低压源,同时不会破坏密封装置的完整性。
2、按照权利要求1所述之端部横向密封装置,其特征为:环(15)用聚四氟乙烯制成。
3、按照权利要求1或2所述之端部横向密封装置,其特征为:滑环(10)上有多个沿周向彼此相继的腔室(19、19、……),朝滑动面(9)开口的通道(32)纵槽(30)出发,沿径向向内,一直通往低压侧。
CN90104243A 1989-06-13 1990-06-11 挠度可控制轧辊的端部横向密封 Expired CN1017178B (zh)

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DEP3919208.3 1989-06-13
DE3919208A DE3919208C1 (zh) 1989-06-13 1989-06-13

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CN1017178B true CN1017178B (zh) 1992-06-24

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EP (1) EP0405083B1 (zh)
JP (1) JPH0646045B2 (zh)
CN (1) CN1017178B (zh)
BR (1) BR9002517A (zh)
CA (1) CA2018765C (zh)
DD (1) DD295214A5 (zh)
DE (2) DE3919208C1 (zh)
FI (1) FI107637B (zh)
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Also Published As

Publication number Publication date
EP0405083A1 (de) 1991-01-02
JPH0646045B2 (ja) 1994-06-15
DE3919208C1 (zh) 1990-10-31
DE59002446D1 (de) 1993-09-30
EP0405083B1 (de) 1993-08-25
CN1048083A (zh) 1990-12-26
DD295214A5 (de) 1991-10-24
CA2018765C (en) 1994-05-03
CA2018765A1 (en) 1990-12-13
FI902897A0 (fi) 1990-06-11
BR9002517A (pt) 1991-08-13
JPH0324313A (ja) 1991-02-01
FI107637B (fi) 2001-09-14
RU1838683C (ru) 1993-08-30
US5119542A (en) 1992-06-09

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