DE3520059C1

DE3520059C1 - Arrangement for fastening a race on the casing of a rotary tube

Info

Publication number: DE3520059C1
Application number: DE19853520059
Authority: DE
Inventors: Fritz 4722 Ennigerloh Schlicht
Original assignee: O&K Orenstein and Koppel GmbH
Current assignee: CNH Industrial Baumaschinen GmbH
Priority date: 1985-06-04
Filing date: 1985-06-04
Publication date: 1986-11-06

Abstract

The invention relates to a rotary tube, in particular for rotary tubular kilns and coolers, with at least one race which is arranged on the outer surface and which is held in the axial direction by a plurality of abutments arranged on both sides of the race. The abutments are fastened on the rotary tube, distributed over the circumference. The radial play of the race can be adjusted by race shoes which are inserted exchangeably in the radial direction between rotary tube and race and in the axial direction between opposite abutments and which are held in the circumferential direction by holding segments fastened on the abutments. In order to make possible simple exchange of the wearing parts without welding operations on the rotary tube, the holding segments are arranged between the respective end surface of the race and the contact surface of the abutments which faces the end surface and lies at a distance from it, and on the outer surface of the race shoes arranged between abutments lying opposite the contact surfaces. The holding segments are provided on their underside with in each case at least one radially inwardly protruding projection for each race shoe which is covered by them and provided with a recess corresponding to the projection. At least on one side of the race, the holding segments run over the region of at least three race shoes, the central one of which [lacuna] at this end, with the abutment left out, in the axial direction exclusively by the central ... Original abstract incomplete. <IMAGE>

Description

Durch diese erfindungsgemäße Ausbildung ergibt sich der Vorteil, daß verschlissene Laufringschuhe ausgewechselt werden können, ohne daß Schweißarbeiten am Drehrohr durchgeführt werden müssen. Es ist lediglich erforderlich, die den jeweiligen Laufringschuh haltenden Haltesegmente von den Widerlagern zu trennen und abzunehmen. Danach kann derjenige Laufringschuh, an dessen einer Seite kein Widerlager angeordnet ist, axial zwischen Drehrohr und Laufring herausgezogen werden. Auch die beiden benachbarten Laufringschuhe können in derselben Weise ausgewechselt wer- den, wenn sie in Umfangsrichtung um einen dem Abstand der Laufringschuhe entsprechenden Weg verschoben werden. Da die Widerlager nicht unmittelbar an der jeweiligen Stirnfläche des Laufringes anliegen, erfolgt deren Haltefunktion für den Laufring mittelbar über die dazwischen angeordneten Haltesegmente. This design according to the invention has the advantage that worn race shoes can be replaced without welding must be carried out on the rotary kiln. It is only necessary that the respective To separate the race shoe holding retaining segments from the abutments and remove. Then that race shoe, on one side of which no abutment is arranged is to be pulled out axially between the rotating tube and the raceway. Both of them too adjacent race shoes can be exchanged in the same way the, if they correspond to the distance between the race shoes in the circumferential direction Be moved away. Because the abutment is not directly on the respective end face of the race, their holding function for the race takes place indirectly via the holding segments arranged in between.

Dementsprechend tritt ein Verschleiß der der Halterung des Laufringes dienenden Flächen nicht an den Widerlagern, sondern an den Haltesegmenten auf.Accordingly, wear of the retainer of the raceway occurs Serving surfaces not on the abutments, but on the holding segments.

Durch einen Austausch der Haltesegmente ist es somit ebenfalls ohne Schweißvorgänge am Drehrohr möglich, einen Verschleiß an den Führungsflächen für den Laufring zu beseitigen.By exchanging the holding segments, it is also without Welding processes on the rotary tube possible, wear on the guide surfaces for remove the race.

Bei einer bevorzugten Ausführungsform der Erfindung überdecken die auf der einen Seite des Laufringes angeordneten Haltesegmente ausschließlich einen Laufringschuh, wogegen die auf der anderen Seite des Laufringes angeordneten Haltesegmente jeweils drei Laufringschuhe überdecken und durch ausschließlich zwei Widerlager gehalten sind. Hierdurch ergibt sich eine Ausführung mit nur zwei unterschiedlichen Haltesegmenten, die die Möglichkeit bietet, die Laufringschuhe zur einen Seite des Laufringes hin problemlos auszuwechseln. In a preferred embodiment of the invention, the cover on one side of the raceway arranged retaining segments only one Race shoe, whereas the holding segments arranged on the other side of the race ring cover each of three race shoes and only use two abutments are held. This results in an embodiment with only two different ones Retaining segments that offer the possibility of moving the raceway shoes to one side of the The raceway can be easily exchanged.

Auf der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemäßen Drehrohres dargestellt, und zwar zeigt F i g. 1 eine Draufsicht auf einen Teil eines Drehrohrschusses, auf dem ein Laufring angeordnet ist, F i g. 2 einen Längsschnitt durch das Drehrohr gemäß der Schnittlinie II-II in F i g. 1, F i g. 3 einen Querschnitt durch einen Teil des Drehrohres gemäß der Schnittlinie III-III in Fig. 1, Fig.4 einen weiteren Querschnitt im Bereich eines Laufringschuhes gemäß der Schnittlinie IV-IV in F i g. 1, F i g. 5 einen weiteren Querschnitt gemäß der Schnittlinie V-V in F i g. 1 im Bereich der gegenüberliegenden Widerlager, F i g. 6 eine Seitenansicht eines nur mit einem Laufringschuh zusammenwirkenden Haltesegments, F i g. 7 eine Ansicht des Haltesegments gemäß F i g. 6 von unten, F i g. 8 eine Seitenansicht des anderen, jeweils drei Laufringschuhe fixierenden Haltesegments und F i g. 9 eine Ansicht des Haltesegments gemäß F i g. 8 von unten. In the drawing is an embodiment of the invention Rotary tube shown, namely shows F i g. 1 is a plan view of part of a Rotary barrel section on which a running ring is arranged, F i g. 2 a longitudinal section through the rotary tube according to the section line II-II in F i g. 1, Fig. 3 shows a cross section through part of the rotary tube according to the section line III-III in Fig. 1, Fig.4 a further cross section in the area of a raceway shoe according to the cutting line IV-IV in FIG. 1, Fig. 5 shows a further cross section according to the section line V-V in Fig. 1 in the area of the opposite abutment, F i g. 6 is a side view a retaining segment cooperating only with one raceway shoe, FIG. 7 a View of the holding segment according to FIG. 6 from below, F i g. 8 is a side view of the other holding segment, each fixing three raceway shoes, and F i g. 9 a view of the holding segment according to FIG. 8 from below.

In den F i g. 1 und 2 ist ein Schuß eines Drehrohres gezeigt, das beispielsweise das Gehäuse eines Drehrohrofens bildet. Auf der Außenfläche dieses Drehrohres 1 ist ein Laufring 2 angeordnet, der der Lagerung des Drehrohres 1 dient. In the F i g. 1 and 2 a shot of a rotary barrel is shown, the for example, forms the housing of a rotary kiln. On the outside face of this Rotary tube 1 is arranged a race 2, which is used to mount the rotary tube 1.

Zwischen dem Drehrohr 1 und dem Laufring 2 sind gleichmäßig über den Umfang verteilt Laufringschuhe 3 angeordnet, mit deren Hilfe das radiale Spiel des Laufringes 2 eingestellt wird und die bei einem Verschleiß ausgewechselt werden. Wie insbesondere aus der unteren Hälfte der F i g. 1 hervorgeht, haben diese Laufringschuhe 3 eine rechteckige Grundform mit in den Schmalseiten ausgebildeten Aussparungen 3a. Between the rotary tube 1 and the raceway 2 are evenly over the circumference distributed running ring shoes 3 arranged, with the help of which the radial play of the race 2 is set and which are replaced when worn. As in particular from the lower half of FIG. 1 shows these race shoes have 3 a rectangular basic shape with recesses formed in the narrow sides 3a.

Um sowohl den Laufring 2 als auch die Laufringschuhe 3 in axialer Richtung des Drehrohres 1 festzulegen, sind auf der Außenseite des Drehrohres 1 Widerlager 4 angeschweißt. Die Anlagefläche 4a dieser Widerlager 4 liegt im Abstand zur jeweiligen Stirnfläche 2a des Laufringes 2 und wird durch Haltesegmente 5 bzw. 6 überbrückt, die im einzelnen in den F i g. 6 bis 9 dargestellt sind. Wie die Fig. 6 und 7 erkennen lassen, besitzt das Haltesegment 5 eine Breite, die der der Widerlager 4 entspricht. Auf der Unterseite des Haltesegments 5 ist ein Vorsprung 5a ausgebildet, der der Aussparung 3a in den Laufringschuhen 3 entspricht. Das Haltesegment 6 erstreckt sich über den Bereich dreier Widerlager 4, so daß dieses Haltesegment 6 drei Laufringschuhe 3 überdeckt, deren axiale Länge dem Abstand zwischen den Anlageflächen 4a der sich gegenüberliegenden Widerlager 4 entspricht. Das Haltesegment 6 ist auf seiner Unterseite dementsprechend mit drei Vorsprüngen 6a versehen, die jeweils in eine Aussparung 3a eines Laufringschuhes 3 eingreifen. To both the race 2 and the race shoes 3 in the axial Determine the direction of the rotary tube 1 are on the outside of the rotary tube 1 Abutment 4 welded on. The contact surface 4a of this abutment 4 is at a distance to the respective end face 2a of the raceway 2 and is supported by holding segments 5 or 6 bridged, the details in the F i g. 6 to 9 are shown. As the fig. 6 and 7 can be seen, the holding segment 5 has a width that of the abutment 4 corresponds. A projection 5a is formed on the underside of the holding segment 5, which corresponds to the recess 3a in the raceway shoes 3. The holding segment 6 extends over the area of three abutments 4, so that this holding segment 6 has three raceway shoes 3 covers, the axial length of which corresponds to the distance between the contact surfaces 4a of the opposite abutment 4 corresponds. The holding segment 6 is on its underside accordingly provided with three projections 6a, each in a recess 3 a of a race shoe 3 engage.

Der F i g. 1 ist zu entnehmen, daß auf der einen Seite des Laufringes 2 von drei nebeneinanderliegenden Widerlagern 4 jeweils das mittlere weggelassen worden ist. The F i g. 1 it can be seen that on one side of the race 2 of three adjacent abutments 4, the middle one is omitted has been.

Durch die hierdurch entstandene Lücke können die Laufringschuhe 3 in axialer Richtung zwischen Drehrohr 1 und Laufring 2 eingeschoben werden, wobei ein Verschieben der Laufringschuhe 3 in Umfangsrichtung eine Montage bzw. Demontage auch der Laufringschuhe 3 zwischen benachbarten Widerlagern 4 ermöglicht.Due to the gap created as a result, the raceway shoes 3 be inserted in the axial direction between the rotary tube 1 and the raceway 2, wherein a displacement of the raceway shoes 3 in the circumferential direction an assembly or disassembly the raceway shoes 3 between adjacent abutments 4 also allows.

Auf der in F i g. 1 linken Seite des Laufringes 2 werden die Laufringschuhe 3 anschließend durch die Haltesegmente 5 in Umfangsrichtung festgelegt, die mit ihren Vorsprüngen 5a in die jeweilige Aussparung 3a des Laufringschuhes 3 eingreifen. Die Haltesegmente 5 übernehmen hierbei zugleich die axiale Führung des Laufringes 2 relativ zum Drehrohr 1. Wie F i g. 2 erkennen läßt, werden die Haltesegmente 5 am jeweiligen Widerlager 4 verschweißt.On the in F i g. 1 on the left side of the race 2 are the race shoes 3 then set by the holding segments 5 in the circumferential direction, which with their projections 5a engage in the respective recess 3a of the race shoe 3. The holding segments 5 take on the axial guidance of the race at the same time 2 relative to the rotary kiln 1. As in FIG. 2 shows, the holding segments 5 welded to the respective abutment 4.

Auch die Haltesegmente 6 übernehmen die Festlegung des Laufringes 2 auf seiner rechten Seite. Diese Haltesegmente 6, die sich jeweils über den Bereich dreier Laufringschuhe 3 erstrecken, werden ebenfalls an den beiden Widerlagern 4 angeschweißt. Mit ihren drei Vorsprüngen 6a greifen sie in die Aussparungen 3a der von Ihnen überdeckten Laufringschuhe 3 ein, so daß auch der mittlere Laufringschuh 3 trotz Fehlens eines Widerlagers 4 in axialer und in Umfangsrichtung festgelegt wird. The holding segments 6 also take over the definition of the race 2 on his right. These holding segments 6, each over the area three running ring shoes 3 are also attached to the two abutments 4 welded on. With their three projections 6a they engage in the recesses 3a of the you covered race shoes 3, so that the middle race shoe 3 set in the axial and circumferential directions despite the lack of an abutment 4 will.

Zum Auswechseln verschlissener Laufringschuhe 3 werden die Haltesegmente 5 und 6 von den Widerlagern 4 getrennt und abgenommen. Danach kann jeweils derjenige Laufringschuh 3, an dessen einer Seite kein Widerlager 4 vorhanden ist, in axialer Richtung zwischen Drehrohr 1 und Laufring 2 herausgezogen werden. Die beiden benachbarten Laufringschuhe 3 werden zuerst in Umfangsrichtung verschoben und danach ebenfalls entnommen. Das Einfügen neuer Laufringschuhe 3 erfolgt in umgekehrter Reihenfolge, bevor die Haltesegmente 5 und 6 wieder aufgesetzt und mit den Widerlagern 4 verschweißt werden. Da nicht die Widerlager 4, sondern die Haltesegmente 5 und 6 die axiale Führung des Laufringes 2 auf dem Drehrohr 1 übernehmen, kann auch an den Haltesegmenten 5 und 6 Verschleiß auftreten, der durch Auswechseln der Haltesegmente 5 und 6 ohne Schwierigkeiten beseitigt werden kann. To replace worn race shoes 3, the holding segments 5 and 6 separated from the abutments 4 and removed. Then each can Running ring shoe 3, on one side of which there is no abutment 4, in an axial direction Direction between rotating tube 1 and raceway 2 are pulled out. The two neighboring ones Race shoes 3 are first moved in the circumferential direction and then likewise taken. The insertion of new race shoes 3 takes place in reverse order, before the holding segments 5 and 6 are put back on and welded to the abutments 4 will. Since not the abutment 4, but the holding segments 5 and 6, the axial Take over leadership of the race 2 on the rotary tube 1, can also on the holding segments 5 and 6 wear occur by replacing the holding segments 5 and 6 without Difficulties can be eliminated.

Wie insbesondere Fig.l erkennen läßt, entstehen durch die voranstehend beschriebene Anordnung in axialer Richtung durchgehende Spalten 7 zwischen benachbarten Widerlagern 4 und Laufringschuhen 3, so daß mit Hilfe eines geeigneten Schmiergerätes Schmiermittel zwischen den Laufring 2 und den Laufringschuhen 3 eingebracht werden kann, um den Verschleiß herabzusetzen. As can be seen in particular from Fig.l, arise from the above described arrangement in the axial direction continuous columns 7 between adjacent Abutments 4 and running ring shoes 3, so that with the help of a suitable lubricating device Lubricant can be introduced between the raceway 2 and the raceway shoes 3 can to reduce wear and tear.

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Claims

Claims: 1. Arrangement for fastening a raceway on the jacket of a rotary kiln, in particular for rotary kilns and coolers, wherein the raceway in the axial direction through a plurality of both sides of the raceway oppositely arranged abutments is held over the circumference distributed on the rotary tube, and the radial play of the race through Race ring shoes interchangeably inserted in the radial direction between the rotary tube and the race ring is adjustable by the abutment and holding segments attached to them are held between the respective end face of the race and this facing, arranged at a distance from it lying contact surface of the abutment are, because you r c h geke n n - that the race shoes (3) between the Contact surfaces (4a) opposing abutments (4) are arranged, - that the Holding segments (5, 6) on their underside, each with at least one radially inside protruding projection (5a, 6a) for each of them covered and with one the recess (3a) provided with the recess (3) corresponding to the projection (5a, 6a) are provided and - that at least on one side of the raceway (2) the holding segments (6) run over the area of at least three raceway shoes (3), the middle one at this end with the omission of the abutment (4) in the axial direction exclusively is held by the central projection (6a) of the holding segment (6).

2. Rotary barrel according to claim 1, characterized in that the on the one side of the race (2) arranged holding segments (5) exclusively cover a race shoe (3), whereas the one on the other side of the race (2) arranged holding segments (6) each cover three race shoes (3) and are held by only two abutments (4).

The invention relates to an arrangement for fastening a raceway on the jacket of a rotary kiln, in particular for rotary kilns and coolers, wherein the raceway in the axial direction through a plurality of both sides of the raceway oppositely arranged abutments is held over the circumference distributed on the rotary tube, and the radial play of the race through Race ring shoes interchangeably inserted in the radial direction between the rotary tube and the race ring is adjustable by the abutment and holding segments attached to them are held between the respective end face of the race and this facing, arranged at a distance from it lying contact surface of the abutment are.

Arrangements of the type described above for the attachment a raceway on the jacket of a rotary kiln are in different designs known In most of the known designs, either the raceway shoes or the holding segments are welded to the rotary tube.

This results in local heat stresses on the rotary tube jacket instead, which are undesirable, especially since they are used every time the raceway shoes are replaced appear.

In the arrangement of the type described in DE-OS 3242 321 are the race shoes in the circumferential direction between the abutments, which is why have a relatively large distance from each other, whereby the bearing surfaces for axial bearing of the raceway. To secure the axial position of the raceway shoes the abutments are provided with holding segments that are interchangeable on the abutments are attached and in turn wear locking elements for the raceway shoes. These Locking elements are relatively small, despite the fact that they take all axial forces the race shoes have to accommodate.

In another known embodiment according to DE-OS 32 03 241 welding work on the rotary tube for the purpose of replacing the raceway shoes is thereby carried out avoided that the abutments are made in two parts. While the base part of the abutment is welded to the rotary tube, the attachment is only with welded to the base part. This attachment is directly on the respective Face of the race. It bears laterally over the abutment Retaining elements that cooperate with the associated race shoe and against it Secure move. Because the abutments are not opposite each other, but only alternately are arranged on both sides of the race, take over the holding segments two adjacent abutments at one end of each race shoe also securing it in the axial direction. The main disadvantage of this known construction is it can be seen that the number of abutments supporting the raceway on the Half reduced.

The invention is based on the object of an arrangement of the initially described type in such a way that without reducing the abutment surfaces a replacement of the race shoes is possible for the race without abutment dismantled or welding work must be carried out on the rotary kiln.

The solution to this problem by the invention is thereby characterized in that the raceway shoes between the contact surfaces opposite one another Abutments are arranged that the holding segments on their underside with each covered at least one radially inward protrusion for each of them and provided with a recess corresponding to the projection race shoe are and that at least on one side of the race, the holding segments over the Area of at least three running ring shoes, the middle one at this end omitting the abutment in the axial direction exclusively through the middle Is held projection of the retaining segment.