EP0589967B1 - Rocker bearing for heavy loads - Google Patents

Rocker bearing for heavy loads Download PDF

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Publication number
EP0589967B1
EP0589967B1 EP92912195A EP92912195A EP0589967B1 EP 0589967 B1 EP0589967 B1 EP 0589967B1 EP 92912195 A EP92912195 A EP 92912195A EP 92912195 A EP92912195 A EP 92912195A EP 0589967 B1 EP0589967 B1 EP 0589967B1
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EP
European Patent Office
Prior art keywords
bearing
cup
cover
rocker
pot
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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
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EP92912195A
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German (de)
French (fr)
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EP0589967A1 (en
Inventor
Hans Peter ANDRÄ
Wolfhart ANDRÄ
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Gohler Bernhard
REINER Saul
SEIFRIED Gerhard
SVENSSON Holger
Original Assignee
Gohler Bernhard
REINER Saul
SEIFRIED Gerhard
SVENSSON Holger
Zellner Wilhelm Dipl-Ing
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Application filed by Gohler Bernhard, REINER Saul, SEIFRIED Gerhard, SVENSSON Holger, Zellner Wilhelm Dipl-Ing filed Critical Gohler Bernhard
Publication of EP0589967A1 publication Critical patent/EP0589967A1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/048—Bearings being adjustable once installed; Bearings used in incremental launching
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/042—Mechanical bearings
    • E01D19/047—Pot bearings

Definitions

  • the invention relates to a tilting bearing for the articulated transfer of heavy loads to a support, in particular for supporting a bridge superstructure on a support bench, with a bearing pot resting on the support and containing an incompressible deformable pressure mass, consisting of a pot base and a pot wall, and with one to be supported Load-bearing lid, which rests on the pressure mass and is sealed against the pot wall, a horizontal bearing connecting the pot bottom with the lid being arranged in the middle of the bearing pot, which has a bearing pin protruding from the pot bottom or the lid, which extends into a bearing recess engages the lid or the bottom of the pot, and a space is provided between the end face of the journal and the bottom of the bearing recess.
  • tilting bearings are used for the constraint-free transfer of large loads to a support.
  • the bearings have to transfer both vertical and horizontal loads, but in most applications tilt movements around any horizontal Allow axes.
  • These tilting joints are used in particular in bridge construction to support the superstructure on a support bench.
  • the deformable pressure mass is a plastic mass which is enclosed on all sides by the bearing pot and the cover.
  • the lid is supported in the vertical direction on the deformable pressure mass and in the horizontal direction on the pot wall.
  • the wall of the pot is stressed both by the side pressure of the pressure mass and by the external horizontal forces exerted on the cover. This horizontal stress causes large wall thicknesses of the pot wall and in the area of the connection to the pot bottom.
  • a central horizontal bearing takes over all horizontal forces that occur.
  • the lid of the storage pot is symmetrical to the bottom of the pot.
  • a circumferential seal is arranged in the area of the pot wall, but does not transmit any horizontal forces.
  • a second, circumferential seal surrounds the central horizontal bearing and seals it against the pressure mass contained in the annular bearing cup. The vertical load is thus only transferred into the annular space filled with pressure mass and surrounding the horizontal bearing, the outer diameter of which must be chosen to be correspondingly large.
  • the object of the invention is therefore to design a tilting bearing of the type mentioned in the introduction in such a way that it can be designed with the smallest possible external dimensions.
  • This object is achieved in that the existing space between the end face of the journal and the bottom of the bearing recess is filled with pressure mass and connected via a channel to the interior of the bearing pot.
  • the entire bearing pot forms a single, coherent pressure chamber, a seal to the central horizontal bearing being dispensed with.
  • the entire inner surface of the bearing cup including the surface above the journal is available as a pressure-transmitting bearing surface for transmitting the vertical load. This is particularly advantageous when large horizontal forces have to be transmitted and the diameter of the journal is therefore large.
  • the enlargement of the dimensions of the central horizontal bearing does not necessitate an enlargement of the external dimensions, because the entire area of the horizontal bearing is also used to transmit the vertical forces.
  • the thickness of the pot bottom can increase from the pot wall to the central horizontal bearing in order to introduce the horizontal forces from the horizontal bearing into the pot bottom, without however necessitating an increase in the external dimensions of the tilting bearing.
  • the journal of the horizontal bearing is attached to the bottom of the pot and engages in a bearing recess in the cover. This results in a particularly simple construction and inexpensive manufacture.
  • the bearing journal is attached to the cover and engages in a corresponding bearing recess in the base of the pot.
  • the tilting bearing can be filled with a pressure fluid as a pressure mass through a closable connection opening in the pot wall or in the lid.
  • the bearing journal is rotationally symmetrical and the bearing recess is a central bearing bore. If, on the other hand, a tilting movement is required only about a single horizontal tilting axis, then the bearing journal according to the invention is a bar which extends essentially over the width of the bearing cup and the bearing recess is a bearing groove in which this bar engages.
  • the bearing journal has proven to be particularly advantageous, in a further development of the inventive concept, to provide the bearing journal with a spherical, preferably spherical outer surface which is supported horizontally on a cylindrical bore wall of the bearing bore. Since practically no vertical displacements can occur due to the incompressibility of the deformable pressure mass, the bearing journal is stressed by Hertzian compressive stresses in the area of contact with the cylindrical bore wall of the bearing bore.
  • the cup seal lies in a groove and is self-sealing due to the lip on the cup wall.
  • the tilting bearing has a bearing cup 4, which rests on a compensation layer 5 on the support bench 3.
  • the storage pot 4 has a pot base 6, from the peripheral edge of which a cylindrical pot wall 7 projects upwards.
  • the storage pot 4 is closed by a cover 8 which supports the bridge superstructure 2.
  • An incompressible deformable pressure mass 9 is enclosed between the cover 8 and the bearing pot 4 in an interior space 4a that is closed on all sides, which can be a liquid or a plastic compound that subsequently cures to form a readily deformable compound.
  • a cup seal 10 is arranged between the circumference of the cover 8 and the cup wall 7. The pot seal 10 allows the vertical displacements that occur when the bridge superstructure 2 is tilted relative to the support bench 3 between the cover 8 and the pot wall 7.
  • the cup seal 10 has a sealing ring 10a inserted in a circumferential groove 11 of the cover 8. The sealing ring 10a lies firmly against the pot wall 7 with its sealing lip 10b.
  • the surface area of the sealing ring 10a or the sealing lip 10b which is acted upon by the internal pot pressure is so large in comparison with the area exposed to the external pressure that the sealing ring 10a forms a self-sealing cup seal, that is to say the contact pressure of the sealing lip 10b on the inner surface of the cup wall 7 and thus the sealing effect also increases with increasing internal pressure of the pressure compound 9.
  • a horizontal bearing 12 is arranged, which transfers the horizontal forces between the cover 8 and the bearing pot 4.
  • the horizontal bearing 12 has a centrally mounted on the pot base 6, upwardly projecting journal 13 which engages in a central bearing bore 14 in the cover 8.
  • the bearing pin 13 is provided on its circumference with a spherical outer surface 15, which is a spherical surface in the illustrated embodiment and is on a cylindrical. Bore wall 16 of the bearing bore 14 is supported horizontally.
  • the top 17 of the pot base 6 forms a flat truncated cone.
  • the thickness of the pot base 6 increases from the pot wall 7 to the central horizontal bearing 12. Of the Pot bottom 6 thus has its greatest thickness in the middle, where the horizontal forces are introduced by the journal 13. In addition to the sealing forces of the pot seal 10, only the horizontal forces from the side pressure of the pressure compound 9 act on the pot wall 7, but no horizontal forces transmitted by the cover 8.
  • an intermediate space 18 is provided, which is connected via a channel 19 to the interior 4a of the bearing cup 4.
  • a pressure equalization between the interior 4a and the intermediate space 18 takes place through the channel 19, so that the cover 8 is acted upon by the pressure of the pressure medium 9 over its entire base area.
  • the pot wall 7 has a closable connection 20 through which the pressure compound 9 can be fed into the storage pot 4.
  • the embodiment shown in Fig. 2 differs from the exemplary embodiment in Fig. 1 primarily in that the journal 13 of the horizontal bearing 12 is attached to the lid 8 and engages in a bearing recess 14 in the middle of the pot base 6.
  • the channel 19, which connects the intermediate space 18 between the bearing journal 13 and the bearing recess 14 with the surrounding interior 4a, is designed as an oblique bore. Several such bores can be provided.
  • connection 20 in the pot wall 7 or alternatively to this connection 20 also indicates that in addition to the connection 20 in the pot wall 7 or alternatively to this connection 20, a connection 20 'is provided in the cover 8. Through the connection 20 ', the pressure mass at Assembly of the tilting bearing can be injected.
  • all essentially the same components in the embodiments according to FIGS. 1 and 2 are designated by the same reference numerals.
  • FIGS. 3 and 4 differs from the embodiment of FIG. 2 essentially in that the pot wall 7, the bearing pin 13 and the side wall of the bearing recess 14 have such a high height that the cover 8 by supplying pressure mass 9 can be raised vertically by a lateral height 20 from the position shown in FIG. 3 to the position shown in FIG. 4 by the lateral connection 20, the spherical outer surface of the bearing journal 13 engaging with the side wall of the bearing recess 14 over the entire stroke remains. Likewise, the seal 10 remains in sealing engagement with the pot wall 7 during the entire stroke.
  • the tilting bearing 1 is also suitable for a height adjustment, as may be necessary in bridge construction, for example in subsoil subsidence.
  • the lid 8 is raised by supplying pressure mass.
  • an initially set bearing height can also be reduced by releasing pressure mass through the connection 20.
  • the pressure mass in the storage pot 4 is no longer liquid, it can be liquefied again by briefly heating the bearing.
  • a suitable pressure mass is selected which becomes fluid when heated.
  • All-sided tilting bearings have been described as exemplary embodiments, which allow tilting movements in all directions because the bearing journal 13 is rotationally symmetrical is. This results in particularly favorable stresses for the pot base 6. If, on the other hand, a tilting option is required only about a single horizontal tilt axis, the bearing journal 13 is designed as a horizontal bar which extends over the width of the bearing cup 4 and engages in a bearing groove forming the bearing recess. Such a one-sided tilt bearing looks in vertical section, for example, just like the all-sided tilt bearings shown in the drawing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Harvester Elements (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Sliding-Contact Bearings (AREA)
  • Surgical Instruments (AREA)
  • Earth Drilling (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PCT No. PCT/EP92/01311 Sec. 371 Date Jan. 6, 1994 Sec. 102(e) Date Jan. 6, 1994 PCT Filed Jun. 11, 1992 PCT Pub. No. WO92/22708 PCT Pub. Date Dec. 23, 1992.An articulated bearing for the articulated transfer of heavy loads, e.g., from a bridge superstructure to a bearing pad, includes a pot connected to the bearing pad and a cover connected to the bridge. The cover extends vertically into the pot to form a sealed space vertically therebetween. A deformable, non-compressible cushioning medium (e.g., liquid or plastic) occupies the space and is loaded by the cover. Horizontal forces are withstood by a journal formed on the cover (or on the pot) and extending into a recess formed in the pot (or in the cover). The journal extends within the recess for less than the recess height to form a gap which is also occupied by the deformable medium to maximize the supporting area of that medium. A channel communicates the gap and space to equalize the pressure of the medium.

Description

Die Erfindung betrifft ein Kipplager zur gelenkigen Übertragung schwerer Lasten auf eine Unterstützung, insbesondere zur Abstützung eines Brückenüberbaus auf eine Auflagerbank, mit einem auf der Unterstützung ruhenden, eine inkompressible verformbare Druckmasse enthaltenden Lagertopf, bestehend aus einem Topfboden und einer Topfwand, und mit einem die abzustützende Last aufnehmenden Deckel, der auf der Druckmasse ruht und gegenüber der Topfwand abgedichtet ist, wobei in der Mitte des Lagertopfes ein den Topfboden mit dem Deckel verbindendes Horizontallager angeordnet ist, das einen aus dem Topfboden bzw. dem Deckel vorstehenden Lagerzapfen aufweist, der in eine Lagerausnehmung des Deckels bzw. des Topfbodens eingreift, und wobei zwischen der Stirnfläche des Lagerzapfens und dem Boden der Lagerausnehmung ein Zwischenraum vorgesehen ist.The invention relates to a tilting bearing for the articulated transfer of heavy loads to a support, in particular for supporting a bridge superstructure on a support bench, with a bearing pot resting on the support and containing an incompressible deformable pressure mass, consisting of a pot base and a pot wall, and with one to be supported Load-bearing lid, which rests on the pressure mass and is sealed against the pot wall, a horizontal bearing connecting the pot bottom with the lid being arranged in the middle of the bearing pot, which has a bearing pin protruding from the pot bottom or the lid, which extends into a bearing recess engages the lid or the bottom of the pot, and a space is provided between the end face of the journal and the bottom of the bearing recess.

Derartige Kipplager dienen zur zwängungsfreien Übertragung von großen Lasten auf eine Unterstützung. Die Lager müssen sowohl vertikale als auch horizontale Lasten übertragen, dabei aber bei den meisten Anwendungen Kippbewegungen um beliebige horizontale Achsen zulassen. Diese Kippgelenke werden insbesondere im Brückenbau eingesetzt, um den Überbau auf einer Auflagerbank zu stützen.Such tilting bearings are used for the constraint-free transfer of large loads to a support. The bearings have to transfer both vertical and horizontal loads, but in most applications tilt movements around any horizontal Allow axes. These tilting joints are used in particular in bridge construction to support the superstructure on a support bench.

Bei bekannten Kipplagern, die auch als "Neotopflager" oder "Gummitopflager" bezeichnet werden, ist die verformbare Druckmasse eine Kunststoffmasse, die vom Lagertopf und dem Deckel allseitig umschlossen ist. Der Deckel stützt sich in vertikaler Richtung auf der verformbaren Druckmasse und in horizontaler Richtung an der Topfwand ab. Die Topfwand wird dabei sowohl durch den Seitendruck der Druckmasse als auch durch die über den Deckel ausgeübten äußeren Horizontalkräfte beansprucht. Diese Horizontalbeanspruchung bedingt große Wanddicken der Topfwand und im Bereich des Anschlusses an den Topfboden.In known tilting bearings, which are also referred to as "Neotopflager" or "Gummitopflager", the deformable pressure mass is a plastic mass which is enclosed on all sides by the bearing pot and the cover. The lid is supported in the vertical direction on the deformable pressure mass and in the horizontal direction on the pot wall. The wall of the pot is stressed both by the side pressure of the pressure mass and by the external horizontal forces exerted on the cover. This horizontal stress causes large wall thicknesses of the pot wall and in the area of the connection to the pot bottom.

Bei einem bekannten Kipplager der eingangs genannten Gattung (DE-A-2 152 981) übernimmt ein zentrales Horizontallager alle auftretenden Horizontalkräfte. Der Deckel des Lagertopfes ist symmetrisch zum Topfboden ausgebildet. Im Bereich der Topfwand ist eine umlaufende Dichtung angeordnet, die jedoch keine Horizontalkräfte überträgt. Eine zweite, umlaufende Dichtung umgibt bei dem bekannten Kipplager das zentrale Horizontallager und dichtet es gegenüber der im ringförmigen Lagertopf enthaltenen Druckmasse ab. Die vertikale Last wird somit nur in den mit Druckmasse gefüllten, das Horizontallager umgebenden Ringraum übertragen, dessen außendurchmesser entsprechend groß gewählt werden muß.In a known tilting bearing of the type mentioned at the beginning (DE-A-2 152 981), a central horizontal bearing takes over all horizontal forces that occur. The lid of the storage pot is symmetrical to the bottom of the pot. A circumferential seal is arranged in the area of the pot wall, but does not transmit any horizontal forces. In the known tilting bearing, a second, circumferential seal surrounds the central horizontal bearing and seals it against the pressure mass contained in the annular bearing cup. The vertical load is thus only transferred into the annular space filled with pressure mass and surrounding the horizontal bearing, the outer diameter of which must be chosen to be correspondingly large.

Aufgabe der Erfindung ist es daher, ein Kipplager der eingangs genannten Gattung so auszubilden, daß es mit möglichst geringen Außenabmessungen ausgeführt werden kann.The object of the invention is therefore to design a tilting bearing of the type mentioned in the introduction in such a way that it can be designed with the smallest possible external dimensions.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der zwischen der Stirnfläche des Lagerzapfens und dem Boden der Lagerausnehmung bestehende Zwischenraum mit Druckmasse gefüllt und über einen Kanal mit dem Innenraum des Lagertopfes verbunden ist.This object is achieved in that the existing space between the end face of the journal and the bottom of the bearing recess is filled with pressure mass and connected via a channel to the interior of the bearing pot.

Dadurch wird erreicht, daß der gesamte Lagertopf einen einzigen, zusammenhängenden Druckraum bildet, wobei eine Dichtung zum zentralen Horizontallager hin entfällt. Als druckübertragende Lagerfläche zur Übertragung der vertikalen Last steht die gesamte Innenfläche des Lagertopfes einschließlich der Fläche über dem Lagerzapfen zur Verfügung. Dies ist insbesondere dann vorteilhaft, wenn große Horizontalkräfte übertragen werden müssen und somit der Durchmesser des Lagerzapfens groß ist. Die Vergrößerung der Abmessungen des zentralen Horizontallagers macht jedoch keine Vergrößerung der Außenabmessungen notwendig, weil die gesamte Fläche des Horizontallagers auch zur Übertragung der vertikalen Kräfte genutzt wird.It is thereby achieved that the entire bearing pot forms a single, coherent pressure chamber, a seal to the central horizontal bearing being dispensed with. The entire inner surface of the bearing cup including the surface above the journal is available as a pressure-transmitting bearing surface for transmitting the vertical load. This is particularly advantageous when large horizontal forces have to be transmitted and the diameter of the journal is therefore large. However, the enlargement of the dimensions of the central horizontal bearing does not necessitate an enlargement of the external dimensions, because the entire area of the horizontal bearing is also used to transmit the vertical forces.

Vorzugsweise kann die Dicke des Topfbodens von der Topfwand zum zentralen Horizontallager hin zunehmen, um die Horizontalkräfte vom Horizontallager in den Topfboden einzuleiten, ohne daß hierdurch jedoch eine Vergrößerung der Außenabmessungen des Kipplagers erforderlich werden.Preferably, the thickness of the pot bottom can increase from the pot wall to the central horizontal bearing in order to introduce the horizontal forces from the horizontal bearing into the pot bottom, without however necessitating an increase in the external dimensions of the tilting bearing.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß der Lagerzapfen des Horizontallagers am Topfboden angebracht ist und in eine Lagerausnehmung des Deckels eingreift. Dadurch ergibt sich ein besonders einfacher konstruktiver Aufbau und eine günstige Herstellung. In einer anderen Ausführungsform ist der Lagerzapfen am Deckel angebracht und greift in eine entsprechende Lagerausnehmung des Topfbodens ein.According to a preferred embodiment of the invention, it is provided that the journal of the horizontal bearing is attached to the bottom of the pot and engages in a bearing recess in the cover. This results in a particularly simple construction and inexpensive manufacture. In another embodiment, the bearing journal is attached to the cover and engages in a corresponding bearing recess in the base of the pot.

Die Füllung des Kipplagers mit einer Druckflüssigkeit als Druckmasse kann durch eine verschließbare Anschlußöffnung in der Topfwand oder im Deckel erfolgen.The tilting bearing can be filled with a pressure fluid as a pressure mass through a closable connection opening in the pot wall or in the lid.

Wenn eine allseitige Kippmöglichkeit gefordert wird, ist der Lagerzapfen rotationssymmetrisch und die Lagerausnehmung ist eine zentrische Lagerbohrung. Wenn dagegen eine Kippbewegung nur um eine einzige horizontale Kippachse gefordert wird, dann ist der erfindungsgemäße Lagerzapfen eine sich im wesentlichen über die Breite des Lagertopfes erstreckende Leiste und die Lagerausnehmung ist eine Lagernut, in die diese Leiste eingreift.If tilting is required on all sides, the bearing journal is rotationally symmetrical and the bearing recess is a central bearing bore. If, on the other hand, a tilting movement is required only about a single horizontal tilting axis, then the bearing journal according to the invention is a bar which extends essentially over the width of the bearing cup and the bearing recess is a bearing groove in which this bar engages.

Als besonders vorteilhaft hat sich erwiesen, in Weiterbildung des Erfindungsgedankens den Lagerzapfen mit einer balligen, vorzugsweise eine Kugelfläche bildenden Außenfläche zu versehen die sich an einer zylindrischen Bohrungswand der Lagerbohrung horizontal abstützt. Da wegen der Inkompressibilität der verformbaren Druckmasse praktisch keine senkrechten Verschiebungen auftreten könneh wird der Lagerzapfen im Bereich der Berührung mit der zylindrischen Bohrungswand der Lagerbohrung mur durch Hertzsche Druckspannungen beansprucht.It has proven to be particularly advantageous, in a further development of the inventive concept, to provide the bearing journal with a spherical, preferably spherical outer surface which is supported horizontally on a cylindrical bore wall of the bearing bore. Since practically no vertical displacements can occur due to the incompressibility of the deformable pressure mass, the bearing journal is stressed by Hertzian compressive stresses in the area of contact with the cylindrical bore wall of the bearing bore.

Da zwischen dem Umfang des Deckels und der Topfwand außer der Topfdichtung keiner zur Übertragung von Horizontalkräften dienenden Elemente angeordnet sind, ist der konstruktive Aufbau des Kipplagers vereinfacht und die Montage der Topfdichtungund des Kipplagers werden wesentlich erleichtert. Die Topfdichtung liegt dabei in einer Nut und ist infolge der an der Topfwandung anliegenden Lippe selbstdichtend.Since no elements serving to transmit horizontal forces are arranged between the circumference of the cover and the cup wall, apart from the cup seal, the structural design of the tilting bearing is simplified and the assembly of the cup seal and the tilting bearing are made considerably easier. The cup seal lies in a groove and is self-sealing due to the lip on the cup wall.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the inventive concept are the subject of further dependent claims.

Nachfolgend werden Ausführungsbeispiele der Erfindung näher erläutert, die jeweils im senkrechten Schnitt in der Zeichnung dargestellt sind. Es zeigt:

  • Fig. 1 ein Kipplager mit einem am Topfboden angebrachten Lagerzapfen,
  • Fig. 2 ein Kipplager mit einem am Deckel angebrachten Lagerzapfen,
  • Fig. 3 ein anhebbares Kipplager in seiner unteren Stellung und
  • Fig. 4 das Kipplager nach Fig. 3 in seiner angehobenen Stellung.
Exemplary embodiments of the invention are explained in more detail below, each of which is shown in the drawing in vertical section. It shows:
  • 1 is a tilting bearing with a bearing journal attached to the bottom of the pot,
  • 2 shows a tilting bearing with a bearing journal attached to the cover,
  • Fig. 3 is a liftable tilting bearing in its lower position and
  • Fig. 4 shows the tilting bearing of Fig. 3 in its raised position.

Fig.1 zeigt in einem senkrechten Schnitt ein allseitiges Kipplager 1, das beispielsweise zur Abstützung eines Brückenüberbaus 2 auf einer Auflagerbank 3 dient. Das Kipplager weist einen Lagertopf 4 auf, der auf einer Ausgleichsschicht 5 auf der Auflagerbank 3 ruht.1 shows in a vertical section an all-sided tilt bearing 1, which is used, for example, to support a bridge superstructure 2 on a support bench 3. The tilting bearing has a bearing cup 4, which rests on a compensation layer 5 on the support bench 3.

Der Lagertopf 4 weist einen Topfboden 6 auf, von dessen Umfangsrand eine zylindrische Topfwand 7 nach oben ragt. Der Lagertopf 4 ist durch einen Deckel 8 verschlossen, der den Brückenüberbau 2 trägt.The storage pot 4 has a pot base 6, from the peripheral edge of which a cylindrical pot wall 7 projects upwards. The storage pot 4 is closed by a cover 8 which supports the bridge superstructure 2.

Zwischen dem Deckel 8 und dem Lagertopf 4 ist in einem allseitig geschlossenen Innenraum 4a eine inkompressible verformbare Druckmasse 9 eingeschlossen, die eine Flüssigkeit oder eine nachträglich zu einer leicht verformbären Masse aushärtende Kunststoffmasse sein kann. Zwischen dem Umfang des Deckels 8 und der Topfwand 7 ist eine Topfdichtung 10 angeordnet. Die Töpfdichtung 10 läßt-die bei einer Kippbwegung des Brückenüberbaus 2 gegenüber der Auflägerbank 3 zwischen dem Deckel 8 und der Topfwand 7 auftretenden vertikalen Verschiebungen zu. Bei dem gezeigten Ausführungsbeispiel weist die Topfdichtung 10 einen in einer Umfangsnut 11 des Deckels 8 eingelegten dichtring 10a auf. Der Dichtring 10a liegt mit seiner Dichtlippe 10b fest an der Topfwand 7 an. Die mit dem Topf-Innendruck beaufschlagte Fläche des Dichtrings 10a bzw. der Dichtlippe 10b ist im Vergleich zu der dem Außendruck ausgesetzten Fläche so groß, daß der Dichtring 10a eine selbstdichtende Topfdichtung bildet, das heißt der Anpreßdruck der Dichtlippe 10b an der Innenfläche der Topfwand 7 und somit die Dichtwirkung nimmt mit zunehmendem Innendruck der Druckmasse 9 ebenfalls zu.An incompressible deformable pressure mass 9 is enclosed between the cover 8 and the bearing pot 4 in an interior space 4a that is closed on all sides, which can be a liquid or a plastic compound that subsequently cures to form a readily deformable compound. A cup seal 10 is arranged between the circumference of the cover 8 and the cup wall 7. The pot seal 10 allows the vertical displacements that occur when the bridge superstructure 2 is tilted relative to the support bench 3 between the cover 8 and the pot wall 7. In the embodiment shown, the cup seal 10 has a sealing ring 10a inserted in a circumferential groove 11 of the cover 8. The sealing ring 10a lies firmly against the pot wall 7 with its sealing lip 10b. The surface area of the sealing ring 10a or the sealing lip 10b which is acted upon by the internal pot pressure is so large in comparison with the area exposed to the external pressure that the sealing ring 10a forms a self-sealing cup seal, that is to say the contact pressure of the sealing lip 10b on the inner surface of the cup wall 7 and thus the sealing effect also increases with increasing internal pressure of the pressure compound 9.

In der Mitte des Lagertopfes 4 ist ein Horizontallager 12 angeordnet, das die Horizontalkräfte zwischen dem Deckel 8 und dem Lagertopf 4 überträgt. Das Horizontallager 12-weist einen zentral am Topfboden 6 angebrachten, nach oben ragenden Lagerzapfen 13 auf, der in eine zentrale Lagerbohrung 14 im Deckel 8 eingreift. Der Lagerzapfen 13 ist an seinem Umfang mit einer balligen Außenfläche 15 versehen,die beim dargestellten Ausführungsbeispiel eine Kugelfläche ist und sich an einer zylindrischen. Bohrungswand 16 der Lagerbohrung 14 horizontal abstützt.In the middle of the bearing pot 4, a horizontal bearing 12 is arranged, which transfers the horizontal forces between the cover 8 and the bearing pot 4. The horizontal bearing 12 has a centrally mounted on the pot base 6, upwardly projecting journal 13 which engages in a central bearing bore 14 in the cover 8. The bearing pin 13 is provided on its circumference with a spherical outer surface 15, which is a spherical surface in the illustrated embodiment and is on a cylindrical. Bore wall 16 of the bearing bore 14 is supported horizontally.

Die Oberseite 17 des Topfbodens 6 bildet einen flachen Kegelstumpf. Die Dicke des Topfbodens 6 nimmt von der Topfwand 7 zum zentralen Horizontallager 12 hin zu. Der Topfboden 6 weist somit seine größte Dicke in der Mitte auf, wo die Horizontalkräfte vom Lagerzapfen 13 eingeleitet werden. Außer den Dichtungskräften der Topfdichtung 10 wirken auf die Topfwand 7 nur die horizontalen Kräfte aus dem Seitendruck der Druckmasse 9, jedoch keine vom Deckel 8 übertragenen Horizontalkräfte.The top 17 of the pot base 6 forms a flat truncated cone. The thickness of the pot base 6 increases from the pot wall 7 to the central horizontal bearing 12. Of the Pot bottom 6 thus has its greatest thickness in the middle, where the horizontal forces are introduced by the journal 13. In addition to the sealing forces of the pot seal 10, only the horizontal forces from the side pressure of the pressure compound 9 act on the pot wall 7, but no horizontal forces transmitted by the cover 8.

Zwischen der Stirnfläche 13a des Lagerzapfens 13 und dem Boden 14a der Lagerausnehmung 14 ist ein Zwischenraum 18 vorgesehen, der über einen Kanal 19 mit dem Innenraum 4a des Lagertopfes 4 verbunden ist. Durch den Kanal 19 erfolgt ein Druckausgleich zwischen dem Innenraum 4a und dem Zwischenraum 18, so daß der Deckel 8 über seine gesamte Grundfläche mit dem Druck des Druckmittels 9 beaufschlagt ist.Between the end face 13a of the bearing journal 13 and the bottom 14a of the bearing recess 14, an intermediate space 18 is provided, which is connected via a channel 19 to the interior 4a of the bearing cup 4. A pressure equalization between the interior 4a and the intermediate space 18 takes place through the channel 19, so that the cover 8 is acted upon by the pressure of the pressure medium 9 over its entire base area.

Die Topfwand 7 weist einen verschließbaren Anschluß 20 auf, durch den die Druckmasse 9 in den Lagertopf 4 zugeführt werden kann.
Das in Fig. 2 dargestellte Ausführungsbeispiel unterscheidet sich von dem Ausfthrungsbeispiel in Fig. 1 in erster Linie dadurch, daß der Lagerzapfen 13 des Horizontal lagers 12 am Deckel 8 angebracht ist und in eine Lagerausnehmung 14 in der Mitte des Topfbodens 6 greift. Der Kanal 19, der den Zwischenraum 18 zwischen dem Lagerzapfen 13 und der Lagerausnehmung 14 mit dem umgebenden Innenraum 4a verbindet, ist hierbei als schrage Bohrung ausgeführt. Es können mehrere solcher Bohrungen vorgesehen sein.The pot wall 7 has a closable connection 20 through which the pressure compound 9 can be fed into the storage pot 4.
The embodiment shown in Fig. 2 differs from the exemplary embodiment in Fig. 1 primarily in that the journal 13 of the horizontal bearing 12 is attached to the lid 8 and engages in a bearing recess 14 in the middle of the pot base 6. The channel 19, which connects the intermediate space 18 between the bearing journal 13 and the bearing recess 14 with the surrounding interior 4a, is designed as an oblique bore. Several such bores can be provided.

In Fig. 2 ist auch angedeutet, daß zusätzlich zu dem Anschluß 20 in der Topfwand 7 oder alternativ zu diesem Anschluß 20 ein Anschluß 20' im Deckel 8 vorgesehen ist. Durch den Anschluß 20' kann die Druckmasse bei der Montage des Kipplagers injiziert werden. Im übrigen sind alle im wesentlichen gleichen Bauteile bei den Ausführungsformen nach den Fig. 1 und 2 mit gleichen Bezugszeichen bezeichnet.2 also indicates that in addition to the connection 20 in the pot wall 7 or alternatively to this connection 20, a connection 20 'is provided in the cover 8. Through the connection 20 ', the pressure mass at Assembly of the tilting bearing can be injected. Incidentally, all essentially the same components in the embodiments according to FIGS. 1 and 2 are designated by the same reference numerals.

Das Ausführungsbeispiel nach den Fig. 3 und 4 unterscheidet sich von der Ausführung nach Fig. 2 im wesentlichen dadurch, daß die Topfwand 7, der Lagerzapfen 13 und die Seitenwand der Lagerausnehmung 14 eine so große Höhe aufweisen, daß der Deckel 8 durch Zufuhr von Druckmasse 9 durch den seitlichen Anschluß 20 vertikal um eine Hubhöhe h aus der in Fig. 3 gezeigten Stellung in die in Fig. 4 gezeigte Stellung angehoben werden kann, wobei die ballige Außenfläche des Lagerzapfens 13 über den gesamten Hub mit der Seitenwand der Lagerausnehmung 14 in Eingriff bleibt. Ebenso bleibt die Dichtung 10 während des gesamten Hubes mit der Topfwand 7 in dichtendem Eingriff.The embodiment of FIGS. 3 and 4 differs from the embodiment of FIG. 2 essentially in that the pot wall 7, the bearing pin 13 and the side wall of the bearing recess 14 have such a high height that the cover 8 by supplying pressure mass 9 can be raised vertically by a lateral height 20 from the position shown in FIG. 3 to the position shown in FIG. 4 by the lateral connection 20, the spherical outer surface of the bearing journal 13 engaging with the side wall of the bearing recess 14 over the entire stroke remains. Likewise, the seal 10 remains in sealing engagement with the pot wall 7 during the entire stroke.

In dieser Ausführung eignet sich das Kipplager 1 auch zu einer Höhenverstellung, wie sie im Brückenbau beispielsweise bei Baugrund-Setzungen notwendig werden kann. Das Anheben des Deckels 8 erfolgt durch Zufuhr von Druckmasse. In entsprechender Weise kann auch eine anfänglich eingestellte Lagerhöhe verringert werden, indem Druckmasse durch den Anschluß 20 abgelassen wird.In this version, the tilting bearing 1 is also suitable for a height adjustment, as may be necessary in bridge construction, for example in subsoil subsidence. The lid 8 is raised by supplying pressure mass. In a corresponding manner, an initially set bearing height can also be reduced by releasing pressure mass through the connection 20.

Wenn die Drukmasse im Lagertopf 4 nicht mehr flüssig ist, kann sie durch kurzzeitige Erwärmung des Lagers wieder verflüssigt werden. Hierzu wird eine geeignete, bei Erwärmung fließfähig werdende Druckmasse gewählt.If the pressure mass in the storage pot 4 is no longer liquid, it can be liquefied again by briefly heating the bearing. For this purpose, a suitable pressure mass is selected which becomes fluid when heated.

Als Ausführungsbeispiele wurden allseitige Kipplager beschrieben, die Kippbewegungen nach allen Richtungen zulassen, weil der Lagerzapfen 13 rotationssymmetrisch ist. Damit ergeben sich für den Topfboden 6 besonders günstige Beanspruchungen. Wenn dagegen eine Kippmöglichkeit nur um eine einzige horizontale Kippachse gefordert wird, wird der Lagerzapfen 13 als horizontale Leiste ausgeführt, die sich über die Breite des Lagertopfes 4 erstreckt und in eine die Lagerausnehmung bildende Lagernut eingreift. Ein solches einseitiges Kipplager sieht im senkrechten Schnitt beispielsweise ebenso aus wie die in der Zeichnung dargestellten allseitigen Kipplager.All-sided tilting bearings have been described as exemplary embodiments, which allow tilting movements in all directions because the bearing journal 13 is rotationally symmetrical is. This results in particularly favorable stresses for the pot base 6. If, on the other hand, a tilting option is required only about a single horizontal tilt axis, the bearing journal 13 is designed as a horizontal bar which extends over the width of the bearing cup 4 and engages in a bearing groove forming the bearing recess. Such a one-sided tilt bearing looks in vertical section, for example, just like the all-sided tilt bearings shown in the drawing.

Claims (13)

  1. Rocker bearing (1) for the articulated transmission of heavy loads onto a support, especially for the support of a bridge superstructure (2) onto a support bed (3), having, resting on the support, a bearing cup (4) containing an incompressible deformable pressure compound (9) which consists of a cup base (6) and a cup wall (7), and with a cover (8) which holds the load to be supported, said cover resting on the pressure compound (9) and sealed off in relation to the cup wall (7), a horizontal bearing (12) being located in the centre of the bearing cup, connecting the cup base (6) to the cover (8), which has a bearing pivot (13) protruding from the cup base (6) or from the cover (8), said pivot engaging in a bearing recess (14) in the cover (8) or in the cup base (6), and with an intermediate space (18) being provided between the front surface (13a) of the bearing pivot (13) and the base (14a) of the bearing recess (14), characterized in that the intermediate space (18) is filled with pressure compound and is connected to the internal space (4a) of the bearing cup (4) through a channel (19).
  2. Rocker bearing according to Claim 1, characterized in that the bearing pivot (13) is symmetrical with respect to rotation and that the bearing recess is a central bearing drilled hole (14).
  3. Rocker bearing according to Claim 1, characterized in that the bearing pivot is a strip extending essentially over the breadth of the bearing cup (4) and the bearing recess is a bearing groove.
  4. Rocker bearing according to Claim 1, characterized in that the bearing pivot (13) of the horizontal bearing (12) is fitted to the cup base (6) and engages into a bearing recess (14) of the cover (8).
  5. Rocker bearing according to Claim 1, characterized in that the bearing pivot (13) of the horizontal bearing (12) is fitted to the cover (8) and engages in a bearing recess (14) of the cup base (6).
  6. Rocker bearing according to Claim 2, characterized in that the bearing pivot (13) has a crowned external surface (15) which is supported horizontally against a cylindrical hole wall (16) of the hole (14) in the bearing.
  7. Rocker bearing according to Claim 6, characterized in that the crowned external surface (15) of the bearing pivot (13) is a spherical surface.
  8. Rocker bearing according to one of Claims 1-7, characterized in that the thickness of the cup base (6) increases from the cup wall (7) to the horizontal bearing (12).
  9. Rocker bearing according to Claim 8, characterized in that the top (17) of the cup base (6) forms a flat truncated cone.
  10. Rocker bearing according to one of Claims 1-9, characterized in that, a cup packing (10) is located between the periphery of the cover (8) and the cup wall (7) which has a packing ring (10a) inserted into a peripheral groove (11) of the cover (8).
  11. Rocker bearing according to Claim 10, characterized in that the packing ring (10a) has a sealing lip (10b) lying against the cup wall (7), the contact pressure of which increases as the internal pressure of the cup increases.
  12. Rocker bearing according to Claim 1, characterized in that the cup wall (7), the bearing pivot (13) and the bearing recess (14) have such a great height that the cover (8) can be raised vertically by a predetermined height (h) by feeding pressure compound (9) into the bearing cup (4).
  13. Rocker bearing according to Claims 1-12, characterized in that a sealable connection (20) for feeding pressure compound (9) is provided in the cup wall (7) or in the cover (8).
EP92912195A 1991-06-13 1992-06-11 Rocker bearing for heavy loads Expired - Lifetime EP0589967B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4119458 1991-06-13
DE4119458A DE4119458A1 (en) 1991-06-13 1991-06-13 KIPPLAGER FOR HEAVY LOADS
PCT/EP1992/001311 WO1992022708A1 (en) 1991-06-13 1992-06-11 Rocker bearing for heavy loads

Publications (2)

Publication Number Publication Date
EP0589967A1 EP0589967A1 (en) 1994-04-06
EP0589967B1 true EP0589967B1 (en) 1996-02-07

Family

ID=6433826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92912195A Expired - Lifetime EP0589967B1 (en) 1991-06-13 1992-06-11 Rocker bearing for heavy loads

Country Status (8)

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US (1) US5466068A (en)
EP (1) EP0589967B1 (en)
JP (1) JPH06508187A (en)
KR (1) KR940701484A (en)
AT (1) ATE134010T1 (en)
DE (2) DE4119458A1 (en)
DK (1) DK0589967T3 (en)
WO (1) WO1992022708A1 (en)

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AT409014B (en) * 1995-11-23 2002-05-27 Ernst Mag Baumann TWO-PIECE HOLLOW PEG INTEGRATED IN THE CONSTRUCTION
US5597240A (en) * 1996-03-04 1997-01-28 Hexcel-Fyfe Co., L.L.C. Structural bearing
US6108986A (en) * 1998-04-23 2000-08-29 Kawasaki Steel Corporation Earthquake-resistant load-bearing system
US6132091A (en) 1998-11-17 2000-10-17 Nikon Corporation X-Y stage with arcuate surface bearings
US6502524B1 (en) 2000-10-10 2003-01-07 Prosafe Production Pte Ltd. Turret support system and bearing unit
KR100414569B1 (en) * 2001-05-04 2004-01-07 재단법인서울대학교산학협력재단 Directional Rolling Friction Pendulum Seismic Isolation System and Roller Assembly Unit for the System
KR200340118Y1 (en) * 2003-10-17 2004-01-31 동일고무벨트주식회사 Bridge bearing
US7020924B2 (en) * 2004-03-29 2006-04-04 Steward Machine Co., Inc. Static stabilizers for bridges
US20060193542A1 (en) * 2005-02-28 2006-08-31 Bradford Paul F Structural bearing using fully housed partially confined elastomer
CN102410376B (en) * 2011-07-29 2013-12-18 株洲时代新材料科技股份有限公司 Hydraulic sealing method and sealing ring for injection height-adjusting bridge steel support
CN102817328B (en) * 2012-09-04 2015-05-13 北京市市政专业设计院股份公司 Method for heightening support
ES2554384T3 (en) * 2013-03-28 2015-12-18 Mageba S.A. POT support
KR101737347B1 (en) * 2017-01-10 2017-05-18 김흥열 seismic isolation system
CN107130514A (en) * 2017-06-20 2017-09-05 浙江秦山橡胶工程股份有限公司 A kind of roll type pot rubber bearing of anti-pulling
CN112942082A (en) * 2021-01-28 2021-06-11 吴敏 Bridge settlement protection support
CN112942083A (en) * 2021-01-28 2021-06-11 吴敏 Anti-seismic bridge support

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US3806975A (en) * 1970-04-13 1974-04-30 Elastometal Ltd Structural bearings
DE2152981C3 (en) * 1971-10-23 1975-09-25 Kober Ag, Glarus (Schweiz) Tilt bearings for bridges or similar structures
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Also Published As

Publication number Publication date
JPH06508187A (en) 1994-09-14
ATE134010T1 (en) 1996-02-15
DE4119458A1 (en) 1992-12-17
DE59205314D1 (en) 1996-03-21
EP0589967A1 (en) 1994-04-06
KR940701484A (en) 1994-05-28
WO1992022708A1 (en) 1992-12-23
US5466068A (en) 1995-11-14
DK0589967T3 (en) 1996-06-17

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