DE102012009068A1 - Bracket for mounting sealing ring into sealing groove, has adjusting element that is provided with receiving area for defining positive connection in radial direction - Google Patents

Abstract

The bracket (1) has a cylindrical pressing element (2) and a cylindrical adjusting element (3) that are telescopically held inside a guide. The guide is designed to allow a coaxial telescoping movement between the adjusting element and the pressing element. A seal (5) is detachably attached on the end face of a seal support surface of the pressing element. The adjusting element is provided with a receiving area (12) for defining a positive connection in a radial direction. An independent claim is included for a method for mounting a sealing ring into a sealing groove.

Description

Technical area

The invention generally relates to mounting brackets for holding seals that facilitate assembly of the seal. The invention further relates to assembly methods for seals, in particular for sealing rings.

State of the art

Sealing rings, in particular shaft seals, are usually provided for mounting on mounting brackets, which receive the substantially annular structure of the sealing ring and thus avoid an unfavorable for the assembly deformation.

For mounting such a sealing ring z. B. on a shaft to the mounting bracket is placed substantially coaxially on the shaft and the sealing ring moves from the mounting bracket in the direction of an annular seal groove located on the shaft and inserted into this. The mounting bracket has for this purpose an outer diameter which substantially corresponds to the inner diameter of the sealing groove, so that the sealing ring as possible by a movement in the axial direction, without having to be pushed over a step into the annular sealing groove hineinschiebbar.

However, such mounting brackets have the disadvantage that the mounting bracket can slip by the action of a lateral force during assembly with respect to the shaft before the sealing ring is inserted into the annular sealing groove. It may happen that the sealing ring is already detached from the mounting bracket, but is not yet in the annular sealing groove. An insertion of a sealing ring, which is already released from the mounting bracket, may be difficult due to a possible bias of the sealing ring in the radial direction.

Also, the application of the force to push the sealing ring of the mounting bracket in the annular sealing groove acts usually only partially on the sealing ring, so that the sealing ring warps in the axial direction. This increases the force with which the sealing ring rests against the lateral surface of the mounting bracket, and thus complicates the overall assembly process. Also, the deformation of the sealing ring in the axial direction can lead to overstresses of the sealing ring, which can affect the durability of the sealing ring or damage it.

It is therefore an object of the present invention to provide a mounting support for a sealing ring, with which the assembly of the sealing ring can be simplified. It is a further object of the present invention to provide a method for simpler and more reliable assembly of a sealing ring.

Disclosure of the invention

This object is achieved by the mounting bracket according to claim 1 and by the mounting bracket assembly and the method for mounting a seal according to the independent claims.

Further advantageous embodiments are specified in the dependent claims.

• – ein im wesentlichen zylinderförmiges Pressteil,
• – ein im wesentlichen zylinderförmiges Justierteil,
• – eine Führung, mit der das Pressteil und das Justierteil teleskopartig ineinander verschiebbar gehalten sind;

wobei das Pressteil stirnseitig eine Dichtungsauflagefläche aufweist, an der eine Dichtung lösbar anbringbar ist, und wobei das Justierteil mit einem Aufnahmebereich zum Herstellen einer formschlüssigen Verbindung in radialer Richtung versehen ist.According to a first aspect, a mounting bracket for inserting a seal is provided in a sealing groove. The mounting bracket includes:

• A substantially cylindrical pressed part,
• A substantially cylindrical adjusting part,
• - A guide with which the pressing part and the adjusting part are telescopically held in one another;

wherein the pressing part frontally has a sealing bearing surface on which a seal is releasably attachable, and wherein the adjusting part is provided with a receiving area for producing a positive connection in the radial direction.

One idea of the above mounting bracket is, by its two-part design for a precise coaxial alignment of the seal with respect to z. B. a shaft and on the other hand, a guide of the seal in a desired insertion position such. B. to allow in an annular sealing groove. For this purpose, the mounting bracket has a pressing part, which makes it possible to move the seal in the direction of the insertion position, and an adjusting part. The adjusting part and the pressing member are coaxially telescopically slidable, the seal z. B. slides along the outer surface of the adjusting part and is thereby guided into the insertion position. Alternatively, the seal can also be guided along an inner surface of the adjusting part. By the adjusting part, which is designed for producing a positive connection with a receiving portion, the entire mounting bracket is axially aligned with the shaft, and the guidance of the adjusting part in the pressing part ensures that the alignment during the movement of the seal in the axial direction in the insertion position is maintained.

Furthermore, the pressing part can have a striking surface opposite the sealing bearing surface, in order to exert a force on the pressing part in an axial direction, in particular by means of hammer blows.

According to one embodiment, the guide may be designed to allow only a coaxial movement between the adjusting part and the pressing part during telescopic displacement.

In particular, the guide may be formed with a holding web, which is arranged between the adjusting part and the pressing part, wherein the holding web is provided with a latching device to lock in a transport state, the pressing member and the adjusting anti-slip each other and by acting on an initial force in the axial Direction to release the locking device, so that a relative displacement of the adjusting part and the pressing member in the axial direction is made possible.

The adjusting member or the pressing member may be provided at an inner end with a termination stop which prevents disengagement of the adjustment member with respect to the pressing member.

It can be provided that a circumference of a lateral surface of the adjusting part increases in the direction of the receiving area.

The cross section of the pressed part can be adapted to the shape of the area enclosed by the seal.

In another aspect, a mounting bracket assembly is provided with the above mounting bracket and a gasket mounted on the gasket landing surface.

According to a further aspect, it is provided to use the above mounting bracket for inserting a seal in a sealing groove.

• – Aufsetzen der obigen Montageanordnung auf einen Abschnitt, der korrespondierend zu dem Aufnahmebereich ausgebildet ist, um eine formschlüssige Verbindung in radialer Richtung herzustellen;
• – Beaufschlagen des Pressteils mit einer Kraft in axialer Richtung zu dem zu dem Aufnahmebereich korrespondierenden Abschnitt, so dass sich das Justierteil und das Pressteil teleskopartig ineinander schieben und so dass die auf der Dichtungsauflagefläche aufsitzende Dichtung koaxial zur Dichtungsnut geführt und darin eingesetzt wird; und
• – Entfernen des Montageträgers, so dass sich die Dichtung von der Dichtungsauflagefläche löst und der Aufnahmebereich aus der formschlüssigen Verbindung gelangt.

In another aspect, a method of inserting a seal into a seal groove is provided. The method comprises the following steps:

• - placing the above mounting arrangement on a portion which is formed corresponding to the receiving area, to produce a positive connection in the radial direction;
• - Applying the pressing member with a force in the axial direction to the corresponding portion to the receiving portion, so that the adjusting part and the pressing member telescopically push each other and so that the seated on the sealing bearing surface seal is guided coaxially to the sealing groove and inserted therein; and
• - Removing the mounting bracket, so that the seal from the sealing bearing surface dissolves and enters the receiving area of the positive connection.

Brief description of the drawings

Preferred embodiments will be explained in more detail with reference to the accompanying drawings. Show it:

1 a perspective view of a mounting support with a sealing ring;

2 a sectional view through a section of the mounting bracket with applied sealing ring; and

3a - 3e schematic representations of the steps of a method for mounting the sealing ring in an annular sealing groove on a shaft.

Description of exemplary embodiments

The following is in conjunction with the 1 and 2 a mounting bracket 1 for holding a sealing ring 5 (Seal) and to simplify the installation of the sealing ring 5 shown. The mounting carrier 1 is essentially formed in two parts and has a pressing part 2 and an adjustment part 3 on. The pressed part 2 and the adjustment part 3 are circular cylindrical in the embodiment shown and arranged coaxially with each other. In other embodiments, the cross sections of the pressed part could 2 and the adjustment part 3 deviate from the circular shape and be formed according to a non-circular self-contained seal.

The pressed part 2 is double-walled in the present embodiment to increase the stability and has a flat front end 4 as a sealing bearing surface on which a sealing ring 5 rests with a bearing surface. The sealing ring 5 is like that on the front end 4 of the pressed part 2 arranged so that they are arranged coaxially with each other. For holding the sealing ring 5 with an easily detachable connection, in particular an adhesive connection or a latching connection, at the front end 4 be attached to the sealing ring 5 in position at the front end 4 to keep.

The illustrated sealing ring 5 is essentially a stabilization ring 6 provided with L-shaped cross-section, at least in sections of an elastic sealing material 7 is surrounded. The cross section of the sealing ring 5 may be formed substantially arbitrarily, but should have an inner surface and an outer surface, which allows insertion into an annular sealing groove. In the present example, the sealing ring 5 approximately U-shaped and has an outer leg 8th passing through the stabilization ring 6 is stabilized, and an inner thigh 9 essentially acting as a bending blade 9 is trained on. Furthermore, the sealing ring 5 one or more sealing lips 10 have, in the radial direction inwardly of the sealing ring 5 protrude.

The sealing ring 5 forms with the pressed part 2 a circular cylinder. In that with the sealing ring 5 applied front end 4 of the circular cylinder thus formed protrudes the adjusting part 3 into it and is there by one on the pressed part 2 inwardly projecting retaining bridge 11 coaxial with the circular cylinder made of pressed part 2 and sealing ring 5 held. The adjusting part 3 has a recording area 12 on, which is placed on a corresponding corresponding portion of a shaft to form there at least against displacement transversely to the axial direction a positive connection. In particular, the shaft may have a shaft portion with a coaxial projection, that of a cylindrical recess 13 of the mounting carrier 1 is recorded. This will be the adjustment part 3 arranged coaxially with the shaft.

The recording area 12 can make a stop 14 have, at the case of complete placement of the mounting bracket 1 on the shaft, a portion of the shaft portion of the shaft is applied and thus a resistance against further pushing of the adjusting part 3 on the shaft in the axial direction.

It is now planned that for the introduction of the sealing ring 5 in a coaxially arranged, annular sealing groove on the shaft of the sealing ring 5 on the adjusting part 3 should slide along and through the pressed part 2 is pressed into the annular sealing groove. It is envisaged that the retaining bar 11 is flexible, so that the retaining bar 11 when exerting a force in the axial direction of the pressing part 2 and in the direction of the adjustment part 3 on an outer surface of the adjusting part 3 slides along and thereby the sealing ring 5 leads to the annular sealing groove.

Since in the initial state of the sealing ring 5 essentially not on the outer surface of the adjustment 3 is present, it can be provided that the outer circumference of the adjusting part 3 to his from the pressed part 2 opposite end, that is to the end of the receiving area 12 enlarged so that the sealing ring 5 on the outer surface of the adjusting part 3 rests before the sealing ring 5 is pressed into the annular sealing groove. In this way it can be ensured that the sealing ring 5 is optimally aligned with the annular sealing groove before it is pressed into the sealing groove.

At his the reception area 12 opposite end of the adjusting part 3 can be a radially outward over the lateral surface of the adjusting part 3 protruding end ring 15 be designed as end stop, to prevent the adjustment 3 from the pressed part 2 in the direction of the sealing ring 5 can be deducted.

Furthermore, a locking lug 16 on the outer surface of the adjusting part 3 be provided in a corresponding recess 17 of the jetty 11 engages to prevent already during mounting of the mounting bracket 1 on the corresponding section of the shaft, a shift of the adjusting part 3 concerning the pressed part 2 he follows. The in the recess 17 latched position of the latch 16 corresponds to a transport state of the mounting bracket 1 , The locking between the latch 16 and the recess 17 is designed so that it dissolves when applying a sufficiently high force in the axial direction.

In the 3a - 3e are the assembly steps for inserting the sealing ring 5 in an annular sealing groove on the shaft 20 shown. The representations of the 3 are schematic and show a cross section of the shaft 20 with a Aufsetzabschnitt 21 an annular sealing groove 22 as well as the mounting bracket 1 with the pressed part 2 , the sealing ring to be used 5 and the adjusting part 3 , In essential features of the mounting bracket 1 previously in conjunction with the 1 and 2 described mounting bracket 1 correspond.

3a shows the mounting bracket in front of the shaft 20 in the non-attached state, that is immediately before mounting the seal 5 , The mounting carrier 1 is in transport condition and the seal 5 is on the mounting bracket 1 , According to 3b becomes the mounting vehicle 1 so on the wave 20 put on that the receiving area 12 of the adjustment part 3 on the shaft section 21 the wave 20 is put on.

Subsequently, on the pressed part 2 exerted an axial force, for example, by uniform pressing of the pressing part 2 in the direction of the wave 20 or by striking with the aid of a hammer or other impact tool on the sealing ring 5 opposite end of the pressed part 2 , This releases the retaining bar 11 on the lateral surface of the adjusting part 3 , so that it slides along the lateral surface. This leads to the retaining bar 11 the adjusting part 3 in the direction of the sealing ring 5 opposite end of the pressed part 2 , The sealing ring 5 approaches the annular seal groove 22 even and substantially coaxial with the shaft 20 ,

A condition in which the adjusting part 3 partly telescopically in the pressed part 2 is inserted in is 3c shown. The sealing ring 5 now lies directly in front of the annular seal groove 22 and by further action of a force on the pressed part 2 in the direction of the wave 20 can the sealing ring 5 exactly in the annular sealing groove 22 be introduced. During this process, the adjustment moves 3 further relative to the pressed part 2 by sliding along the retaining bar 11 ,

Is the sealing ring 5 completely inserted into the annular seal groove, as in 3d is shown, then the mounting bracket 1 from the wave 20 pulled off, so that first the sealing ring 5 from the pressed part 2 dissolves and in the annular sealing groove 22 remains. Furthermore, the adjustment part 3 from the shaft section 21 lifted off, leaving the mounting bracket 1 completely dissolved and the sealing ring 5 in the annular sealing groove 22 is used. This process state is in 3e shown.

LIST OF REFERENCE NUMBERS

1

mounting bracket

2

pressed part

3

adjusting part

4

face

5

seal

6

stabilizing ring

7

sealing material

8th

outer leg

9

inner thighs

10

sealing lip

11

holding web

12

reception area

13

recess

14

attack

15

end ring

16

locking lug

17

recess

20

wave

21

shaft section

22

annular groove

Claims (10)

Mounting carrier ( 1 ) for inserting a seal ( 5 ), in particular a sealing ring, into a sealing groove, comprising: - a substantially cylindrical pressed part ( 2 ), - a substantially cylindrical adjusting part ( 3 ), - a guided tour ( 11 ), with which the pressed part ( 2 ) and the adjustment part ( 3 ) are telescopically held one inside the other; the pressed part ( 2 ) frontally a sealing bearing surface ( 4 ), on which a seal ( 5 ) is releasably attachable, wherein the adjusting part ( 3 ) with a receiving area ( 12 ) is provided for producing a positive connection, in particular in the radial direction. Mounting carrier ( 1 ) according to claim 1, wherein the pressed part ( 2 ) one of the sealing bearing surface ( 4 ) has opposite impact surface to the press part ( 2 ) To exert a force in an axial direction, in particular by hammer blows. Mounting carrier ( 1 ) according to claim 1 or 2, wherein the guide ( 11 ) is adapted to only a coaxial movement between the adjusting part ( 3 ) and the pressed part ( 2 ) allow for telescopic shifting. Mounting carrier ( 1 ) according to one of claims 1 to 3, wherein the guide ( 11 ) with a holding bridge ( 11 ) is formed between the adjusting part ( 3 ) and the pressed part ( 2 ) is arranged and in particular on the pressing part ( 2 ), wherein the retaining web ( 11 ) with a latching device ( 16 . 17 ) is provided in order, in a transport state, the pressed part ( 2 ) and the adjustment part ( 3 ) to slip together with respect to each other and to prevent the latching device (in the axial direction when an initial force acts on it) ( 16 . 17 ), so that a relative displacement of the adjusting part ( 3 ) and the pressed part ( 2 ) is made possible in the axial direction. Mounting carrier ( 1 ) according to one of claims 1 to 4, wherein the adjusting part ( 3 ) or the pressed part ( 2 ) at an inner end with a closure stop ( 15 ), which is a disengagement of the adjusting part ( 3 ) with regard to the pressed part ( 2 ) prevented Mounting support according to one of claims 1 to 5, wherein a circumference, a diameter or a width of a lateral surface of the adjusting part ( 3 ) in the direction of the receiving area ( 12 ). Mounting support according to one of claims 1 to 6, wherein the cross section of the pressed part ( 2 ) is adapted to the shape of the area enclosed by the seal. Mounting support arrangement with a mounting support ( 1 ) according to one of claims 1 to 7 and with a seal ( 5 ) placed on the sealing surface ( 4 ) is releasably attached. Use of a mounting support according to one of claims 1 to 8 for inserting a seal ( 5 ) in a sealing groove ( 22 ). Method for inserting a seal ( 5 ), in particular a sealing ring, in a sealing groove ( 22 ), comprising the following steps: - mounting a mounting support arrangement ( 1 ) according to claim 8 to a section ( 21 ) a wave ( 20 ) corresponding to the receiving area ( 12 ) is formed to produce a positive connection, in particular in the radial direction; - applying the pressed part ( 2 ) with a force in the axial direction to that to the receiving area ( 12 ) corresponding section ( 21 ), so that the adjusting part ( 3 ) and the pressed part ( 2 ) slide telescopically into each other and so that on the sealing pad ( 4 ) seated seal ( 5 ) coaxial with the sealing groove ( 22 ) and inserted therein; - Removing the mounting carrier ( 1 ), so that the seal ( 5 ) from the sealing surface ( 4 ), in the sealing groove ( 22 ) remains in the inserted state and the receiving area ( 12 ) comes out of the positive connection.

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