GB2412080A

GB2412080A - Bearing removal device

Info

Publication number: GB2412080A
Application number: GB0505608A
Authority: GB
Inventors: Horst Klann
Original assignee: Klann Spezial Werkzeugbau GmbH
Current assignee: Klann Spezial Werkzeugbau GmbH
Priority date: 2004-03-20
Filing date: 2005-03-21
Publication date: 2005-09-21
Anticipated expiration: 2025-03-21
Also published as: GB2412080B; GB0505608D0

Abstract

A device for ejecting a bearing such as a damping bush 27 that is press-fitted into a bearing eye 25 disposed on a support link 29 of a motor vehicle axle, comprising a thrust piece (49, fig.4), a support bell 1, and a pressing device (46, fig.4) by means of which the bearing is ejectable via the thrust piece from the bearing eye 25, wherein the support bell 1 during the ejection operation is supported axially on the bearing eye 25. The support bell 1 for receiving the bearing eye 25 comprises a support wall 4, which projects in the direction of the bearing eye 25 and is provided with a recess 5, which receives the support link 29 , and the support wall 4 is provided with a radially effective clamping device 12, 14, by means of which the support bell 1 is fixable by its support wall 4 tightly on the bearing eye 25. The pressing device may be a hydraulic cylinder (46, fig.4) with a piston rod (45, fig.4).

Description

24 1 2080 - 1 [OOO1J Ejection Device For Damping Bushes Of A Motor Vehicle

Axle

1 ] Technical Field

00031 The invention relates to a device for ejecting a bearing that is press-fitted into a bearing eye disposed on a support link of a motor vehicle axle, comprising a thrust piece, a support bell as well as a pressing device, by means of which the bearing can be ejected via the thrust piece from the bearing eye, wherein the support bell during the ejection operation is supported axially on the bearing eye.

flood] State Of The Art [00057 Devices for ejecting a bearing are known. As bearings of a motor vehicle axle, different embodiments, such as e.g. damping bushes, rolling- contact bearings or the like, are used. With regard to the known devices, reference is made here by way of example to DE 35 30 726 C1, DE 37 30 017 C1, DE 35 30 983 C1 and US 3,110,958.

100067 A common feature of these devices is that, especially for ejecting a rolling-contact bearing or damping bush that is press-fitted in a bearing eye, e.g. of a motor vehicle axle, a support bell is provided, which is placeable as an abutment on the bearing eye. In said case, this support bell is supported by its circumferential annular end face in the region surrounding the bearing bore of the bearing eye. By means of a suitable pressing device, which may comprise a pressing frame, a draw spindle, a hydraulic cylinder or the like, the damping bush or rollingcontact bearing is pressed out of the bearing bore via a thrust piece, which is adapted to be placed against the damping bush or rolling-contact bearing. The bell shape of the support bell arises from the fact that all of the rolling-contact bearing or damping bush to be ejected has to fit in the support bell after ejection. - 2

[oooz] Axle structures with damping bushes have become known, in which the damping bushes in their one end region have a radially outwardly projecting stop collar. In these structures, therefore, the region surrounding the bearing bore of the bearing eye is completely covered by the stop collar of the damping bush. As a result, it is no longer possible to apply a support bell as an abutment in the region surrounding the bearing bore of the bearing eye. This also means that the generic devices of the type described above are not usable with such structures. For, were these support bells to be placed on the stop collar of the damping bush, the damping bush would not be ejectable from the bearing bore of the bearing eye in the direction of the support bell.

[oooe1 The underlying object of the invention is accordingly to develop a device whereby a damping bush with a radially projecting stop collar can be reliably ejected.

[ooogJ Accordingly the present invention provides a device for ejecting a bearing wherein the bearing is press-fitted into a bearing eye disposed on a support link of a motor vehicle axle, comprising a thrust piece, a support bell as well as a pressing device by means of which the bearing is ejectable via the thrust piece from the bearing eye, wherein the support bell during the ejection operation is supported axially on the bearing eye, wherein the support bell for receiving the bearing eye comprises a support wall, which projects in the direction of the bearing eye and is provided with a recess, which receives the support link, and that the support wall is provided with a radially effective clamping device, by means of which the support bell is fixable by its support wall tightly on the bearing eye.

[OO7OJ The object is achieved according to the invention together with the features of the preamble of claim 1 in that the support bell for receiving the bearing eye comprises a support wall, which projects in the direction of the bearing eye and is provided with a recess, which receives the support link, and that the support wall is provided with a clamping device, by means of which the support bell is fixable by its support wall tightly on the bearing eye.

1 H By virtue of the development according to the invention of the support bell with its support wall, the support bell is fixable tightly on the bearing eye. It is additionally provided that the support wall has a recess, into which a support link - which always projects radially from a bearing eye - of the motor vehicle axle is received. Starting from this recess, the support wall encloses the bearing eye at least partially in circumferential direction. For the tight mounting of the support wall and hence of the entire support bell, the support wall is provided with a clamping device, by means of which the support bell is fixable by its support wall tightly on the bearing eye.

1 ] Owing to this development, the support bell and/or the support wall has an inside diameter that is adapted to the outside diameter of the bearing eye in such a way that the support bell is slidable by its support wall onto the bearing eye. In other words, the inside diameter of the support wall is designed at least slightly larger than the outside diameter of the bearing eye. In said case, the support bell is held by its support wall and the provided clamping device tightly on the bearing eye.

1 ] As a clamping device, the support wall may be designed such that its diameter is variable by means of a clamping screw or the like, so that the support wall is fixable in the manner of a collar band on the bearing eye.

1 ] According to claim 2 it may also be provided that the clamping device comprises a radially displaceable clamping plate, which extends in the shape of an arc and is disposed in the support wall. By virtue of this development, an extremely easy and reliable clamping of the support wall on the bearing eye is achievable, wherein the support wall is designable in a dimensionally extremely stable manner. - 4

5] According to claim 3, it is provided that the clamping plate is disposed in the support wall diametrically opposite the recess of the support wall. The effect achieved by this development is extremely high stability and, on the other hand, also a symmetrical

introduction of the clamping forces.

10016] According to claim 4, it may be provided that the clamping plate in its neutral, non clamping position is disposed in a radially countersunk manner in a radial hollow of the inner wall of the support wall. By virtue of this development, an extremely small overall size combined with high stability is achievable, wherein the support wall in its inside diameter is mountable with slight play onto the bearing eye. A coaxial alignment of the entire support bell on the bearing eye relative to the bearing bore thereof is thereby achieved.

[ooze] According to claim 5, it may be provided that for radial displacement of the clamping plate and for applying the necessary clamping forces a pressure screw is provided, which is screwed into a radially extending through-thread of the support wall. By virtue of this development, extremely cost-effective manufacture is achieved.

8] By virtue of the development according to claim 6 it is ensured that the clamping forces applied by the pressure screw act on the bearing eye symmetrically relative thereto. For this purpose, the through-thread is disposed symmetrically relative to the hollow of the inner wall of the support wall. Furthermore, the pressure screw at the free end of its threaded shank is provided with a radially tapered journal, on which the clamping plate is rotatably supported by means of a bearing bore of the clamping plate. By virtue of this development also, an extremely simple design of the clamping device is achieved.

[oozes] For captive mounting of the clamping plate on the journal of the pressure screw, according to claim 7 an assembly bolt is provided. As an alternative thereto, a locking - s - ring or the like might be provided. In any case, the clamping plate is easily mountable on the journal of the pressure screw.

1 ] According to claim 8, it may be provided that between the clamping plate and the threaded shank of the pressure screw a washer is provided, by means of which the clamping plate is supported flat against the threaded shank. By virtue of this development, the flow of the clamping forces introduced into the clamping plate by the pressure screw is improved and the clamping plate is also protected from increased wear.

[ 71 According to claim 9, in an alternative to the development according to claim 8 it may be provided that the through-bore of the clamping plate is of a radially stepped design and forms a circumferential annular support face, against which the pressure screw is supported axially by its journal. By virtue of this development, a smaller overall size is achieved because no space between the clamping plate and the annular wall of the support bell is required for the washer.

t 21 According to claim 10, it may be provided that the support wall of the support bell is provided with further recesses for receiving support links of different dimensions. The development enables flexible use of the support bell according to the invention. The support wall has a second or third or even more recesses. Each of the recesses is adapted to the dimensions of a support link, so that the support bell is slidable by its annular wall onto the bearing eye seated in a corresponding manner on this support link.

1 According to claim 11, each of the further recesses may be provided with a clamping device in the form of a clamping plate with pressure screw according to claims 2 to 9.

Here, it is likewise provided that these clamping plates are situated, in relation to the longitudinal centre line of the support bell with its annular wall, diametrically opposite w_, - 6 the respective associated recess, with the result that a concentric introduction of force is achievable during clamping of the support bell on the bearing eye.

1 ] Given a plurality of recesses and clamping plates, according to claim 12 it may be provided that the clamping plates with their pressure screws are usable either individually or jointly in the support wall for the mounting and clamping of the support bell by its support wall on the bearing eye. If, in particular, more than two recesses are provided in the support wall, then, depending on the size of these recesses, the support wall between these recesses wall forms portions of a low circumferential length. What is more, the clamping plate associated with the recesses and the associated pressure screws are then disposed a relatively small circumferential distance apart from one another in the support wall, which given a corresponding circumferential length of the clamping plates may lead to the collision of individual clamping plates. By virtue of selective use of the clamping plates with their associated pressure screws, such collisions are ruled out.

10025] According to claim 13, the device for press-fitting the damping bush into the bearing bore of the bearing eye may comprise a thrust piece. According to claim 9, for receiving the damping bush this thrust piece has at its one axial end a cavity, into which an axial projection of the damping bush is positively receivable. By virtue of this development, the damping bush to be press-fitted into the bearing eye is insertable in a predetermined angular position into the thrust piece.

6] In combination with the development according to claim 14, according to which the thrust piece is provided with an externally visible mark, the damping bush is pressable in a predetermined angular position on the bearing eye. In this case, the provided mark may be used to align, on the one hand, the angular position of the thrust piece relative to the bearing eye and hence also the damping bush, which is positively received by its axial projection in the thrust piece, in this intended angular position.

[oozz] According to claim 15, it may be provided that the clamping device has an inner face, which is directed towards the bearing eye and provided with a profiled surface. By virtue of this development, the press fit of the support wall together with the support bell on the bearing eye is considerably improved. The profiling of the surface of the clamping device may in said case take the form of a knurled profile, a ribbed profile, beading or the like. Depending on the design of the profiled inner face, it may also be provided that the inner face of the clamping device is hardened.

[oozes As an alternative or in addition to the development according to claim 15, according to claim 16 it may be provided that the inner faces of the clamping plates have indentations, which extend in peripheral direction and/or in axial direction and, when the support bell is in place on a bearing eye, are used to receive radially protruding projections of the bearing eye. With this development it is guaranteed that the clamping plates lie with their (remaining) inner face flat against the outer lateral surface of the received bearing eye and are prevented from canting.

[oozes] Brief Description of the Drawings

[ 1 Devices for ejecting a bearing embodying the present invention will now be described by way of example only with reference to the accompanying drawings: in which, [ooa'] Fig. 1 is a perspective exploded view of a support bell according to the invention with support wall and clamping device; [ o? Fig. 1a is an enlarged perspective view of the clamping screw of Fig. 1; 1 ] Fig. 2 is a perspective exploded view of a bearing eye provided with a support link and press-fitted damping bush together with the fully assembled support bell of Fig. 1; 1 o34] Fig. 3 shows the support bell of Figs. 1 and 2 in place on the bearing eye of Fig. 2; 0035] Fig. 4 is a vertical section of a device, for ejecting the damping bush, in place on the bearing eye of Fig. 2; [0035] Fig. 5 is a partial section V-V from Fig. 4; 1 ] Fig. 6 is a perspective exploded view of the damping bush of the bearing eye of Fig. 2 together with a thrust piece; 1 ] Fig. 7 is a perspective exploded view of the bearing eye of Fig. 2 together with the thrust piece in place on the damping bush of Fig. 6; [ooas] Fig. 8 is a vertical section through the bearing eye of Fig. 7 with a device in place on this bearing eye; Fig. 9 is a perspective exploded view of a second embodiment of a support bell with support wall and two clamping devices as well as two recesses for receiving a support link; [ooze] Fig. 9a is an enlarged view of a pressure screw of Fig. 9; [ooze] Fig. 9b is a perspective view of an enlarged detail of a clamping plate of Fig. 9 in the region of its stepped through-bore; [ooze] Fig. 10 is a perspective view of the support bell of Fig. 9 in the mounted state; - 9 - 44] Fig. 11 is a partial section of the support bell of Fig. 10 in the region of one of its pressure screws with clamping plate.

Detailed Description of Drawings

5] Fig. 1 is a perspective view of a support bell 1 according to the invention, which has a closed rear wall 2, in which a through-bore 3 is centrally disposed.

10046] In the present embodiment, the support bell 1 is of an approximately cylindrical design and in its end region remote from the rear wall 2 comprises a support wall 4, which is provided with a radial recess 5. The support bell 1 together with its support wall 4 forms a substantially cylindrical receiving space 6, which is used to receive a damping bush that is to be ejected, as will be described in more detail later.

[ooze] The recess 5 has two side walls 8 and 9, which extend parallel to one another and to the longitudinal centre line 7 of the support bell 1 and which in the direction of the rear wall 2 terminate at a support wall portion 10 extending transversely of the longitudinal centre line 7.

8] The support wall 4 is further provided with a radial hollow 11, which lies in relation to the longitudinal centre line 7 diametrically opposite the recess 5 and is used to receive a clamping plate 12 in a radially displaceable manner. Fig. 1 moreover reveals that in the support wall 4 there is provided in the region of the hollow 11 a radially extending through-thread 13, into which a pressure screw 14 is screwable. This pressure screw 14 at the free end of its threaded shank 15 has a radially tapered journal 16, onto which the clamping plate 12 is mountable with slight play by means of a corresponding through-bore 17.

[oozes] Fig. 1 a shows an enlarged view of this pressure screw 14. From Fig. 1 a it is further evident that in the region of the journal 16 a central internal thread 18 is provided, into - 10 which an assembly bolt 19 (Fig. 1) is provided for detachably fastening the clamping plate 12 on the journal 16. Fig. 1 further shows a spring washer 20, which may be disposed between the clamping plate 12 and the support wall surface of the threaded shank 15 that extends around the journal 16. This washer 20, on the one hand, improves the introduction of force into the clamping plate 12 by the threaded shank 15 and, on the other hand, prevents increased wear of the clamping plate 12.

0050] As Fig. 1 further reveals, the through-thread 13 is disposed both in peripheral direction and in axial direction symmetrically relative to the hollow 11 in the support wall 4. This ensures an effect whereby force is introduced into the clamping plate 12 concentrically with the support wall 4, so that a bearing eye is receivable with secure clamping in the support wall 4.

[0050 Fig. 2 is a perspective view of the support bell 1 together with a bearing eye 25. This bearing eye 25 has a bearing bore 26 (see also Fig. 7), into which a damping bush 27 has been tightly press-fitted. This damping bush 27 in its one, in Fig. 2 trailing, end region has a circumferential, radially extended stop web 28, which during pressfitting of the damping bush 27 into the bearing bore 26 defines the pressfit depth and/or precise fit of the damping bush 27 in the bearing eye 25.

[005 It is further evident from Fig. 2 that the bearing eye 25 is formed as part of a motor vehicle axle integrally on a support link 29 of the motor vehicle axle. From Fig. 2 it is also evident that the bearing eye 25 has an outer lateral surface 30, which in the direction of the stop web 28 comprises a radially reducing, conically tapered portion 31 (see also Fig. 4). This conical portion 31 extends from the stop web 28 over approximately three quarters of the entire axial length of the bearing eye 25. It is in turn adjoined by a second portion 32, which is tapered conically in the direction of the, - 11 n Fig. 2 leading, end of the bearing eye 25. The boundary region between these two portions 31 and 32 is indicated in Fig. 2 by a boundary line 33.

[005 It is further evident from Fig. 2 that the clamping plate 12 is inserted in the hollow 11 of the inner wall 21 of the support wall 4. In said case, the clamping plate 12 is mounted on the pressure screw 14 in a captive manner by means of the assembly bolt 19. In Fig. 2 the clamping plate 12 is shown in its neutral normal position, in which it is retracted in a radially outward direction. It may be seen that the clamping plate 12 lies with its inner-lying inner face 22, which forms a portion of a cylinder, approximately on the same radius as the inner wall 21 of the receiving space 6. In this mounted state, the clamping plate 12 is situated, in relation to the longitudinal centre line 7 of the support bell 1, diametrically opposite the recess 5.

4] According to the invention, it may also be provided that this inner face 22 of the clamping plate 12 has a profiled surface, e.g. in the form of a knurled profile, grooved profile or beading. Depending on the design of the profiled inner face 22, it may also be provided that the inner face 22 of the clamping device 12 is hardened.

5] Fig. 3 shows the support bell 1 mounted on the bearing eye 25. It may be seen clearly that, in this mounted state, the support link 29 is accommodated snugly in the recess 5 and that the support wall 4 of the support bell 1 projects radially outwards from the bearing eye 25. It may also be seen that the support bell 1 extends with its support wall 4 in axial direction approximately as far as the boundary line 33 between the two conical portions 31 and 32 shown in Fig. 2. This means that the clamping plate 12 is likewise situated approximately in the axial region of the conical portion 31, which lies in the direction of the stop web 28 of the damping bush 27 and a trace of which is still visible in Fig. 3. 12

[00561 It is further evident that the support wall 4, starting from its recess 5, encircles the bearing eye 25. As the height H of the support link 29 of the bearing eye 25 is smaller than the diameter D of the bearing eye, the support bell 1 is not removable from the bearing eye 25 in the direction of the arrow 35 because the support wall 4 in the region of its recess 5 engages positively behind the bearing eye 25 in the region of the support link 29. This means that, when the pressure screw 14 is tightened, the clamping plate 12 is pressed against the conical portion 31 of the lateral surface of the bearing eye and so, in cooperation with the support wall 4, a tight clamping hold of the support bell 1 on the bearing eye 25 is realised. During said mounting on the bearing eye 25, the trailing support wall portion 10 of the recess 5 serves as a stop. It is therefore possible to achieve a precise alignment of the support bell coaxially with the longitudinal centre line 36 of the bearing eye 25, which in Fig. 3 is congruent with the longitudinal centre line 7 of the support bell.

[0050 Should the support link 29 have a height H corresponding to the outside diameter D of the bearing eye, it may also be provided that the clamping plate 12 is disposed in the support wall 4 transversely to the radial line defined by the recess 5, so that a clamping effect occurs in this transverse direction. It is also possible to provide two clamping plates, which lie diametrically opposite one another in this "transverse plane".

8] Fig. 4 shows a complete ejection device with the support bell 1 according to the invention in place on the bearing eye 25.

[005g] From Fig. 4 it may be seen that the portion 31 of the outer lateral surface 30 of the bearing eye 25 is designed to taper conically in the direction of the stop web 28 of the damping bush 27. The clamping plate 12 is disposed in this region when the support bell 1 is in place on the bearing eye 25. It is also evident from Fig. 4 that the bearing - 13 eye 25 lies with the support link 29 against the support wall portion 10 of the support bell 1 and/or the support wall 4. The pressure screw 14 is screwed by its threaded shank 15 into the internal thread 18 of the support wall 4. The clamping plate 12 is seated by its through-bore 17 on the journal 16 of the pressure screw 14 and is held with play on the journal 16 by means of the assembly bolt 19.

0] The washer 20 is disposed between the clamping plate 12 and the threaded shank, which is extended radially relative to the journal 16. This washer 20 is in said case supported axially against the leading end region of the threaded shank 15, as has already been described above. When the pressure screw 14 is tightened, the clamping plate 12 is pressed against the conical portion 31 of the lateral surface 30 of the bearing eye 25. In said case, the clamping plate 12 is swivelled slightly until it lies flatly on the conical portion 31. It is easy to imagine that, given the action of axial forces in the direction of the arrow 40, because of the shape of the conical portion 31 and the positional adaptation of the clamping plate 12 to this conical shape the support bell 1 is unable to be displaced along the bearing eye in the direction of the arrow 40. Thus, a defined, tight hold of the support bell 1 on the bearing eye 25 is reliably achieved after tightening of the pressure screw 14.

10060 As is further evident from Fig. 4, the damping bush 27 is penetrated in axial direction by a piston rod 45 of a hydraulic cylinder 46. The hydraulic cylinder 46 in said case forms the pressing device, by means of which the damping bush 27 is pressable out of the bearing bore 26 of the bearing eye 25. For this purpose, there is provided on a connection thread 47 of the hydraulic cylinder 46 a connection socket 48, into which a thrust piece 49 is inserted from the outside. For this purpose, this thrust piece 49 has in the direction of the connection socket 48 a connecting piece 50, by which the thrust piece 49 is insertable in a fitted manner into a corresponding axial bore 51 of the - 14 connection socket 48. For exchangeable fixing of the connecting piece 50 with slight clamping in the axial bore 51, in the present embodiment an O-ring 52 is provided.

[00621 As Fig. 4 further reveals, the thrust piece 49 is supported by a circumferential annular wall 53, which extends axially relative to the damping bush 27, frontally against a mounting bush 54 of the damping bush 27. The outside diameter of the thrust piece 49 with its annular wall 53 is in said case, at most, as large as the outside diameter of the mounting bush 54 of the damping bush 27 and/or the inside diameter of the bearing bore 26, so that the thrust piece 49 during the ejection operation is pressable through the bearing bore 26 of the bearing eye 25. It is further evident from Fig. 4 that the circumferential, radially extended stop web 28 of this mounting bush 54 completely covers the bearing eye 25 at the front end (at the right side).

1] For axial fixing of the piston rod 45 to the support bell 1, this piston rod 45 at its free end has an external thread 55, onto which a flanged nut 56 is screwed. This flanged nut 56 is supported by a radially extended support flange 57 axially against a support ring 58 of the support bell 1, which support ring 58 projects from the rear wall 2 and is disposed concentrically with the through-bore 3 thereof.

4] It is easy to imagine that, on activation of the hydraulic cylinder 46, its piston rod 45 is drawn in the direction of the arrow 40 into the hydraulic cylinder 46. As the piston rod by virtue of its external thread 55, the flanged nut 56 and the support bell mounted tightly on the bearing eye 25 is not displaceable in axial direction, the effect of this activation is that the damping bush 27 is pressed by the hydraulic cylinder 46 via the thrust piece 49 and the connection socket 48 out of the bearing bore 26 of the bearing eye 25 in the opposite direction to the arrow 40. The axial length of the receiving space 6 is in said case so selected that, after complete ejection of the damping bush 27, there is room for the entire damping bush 27 in this receiving space 6 of the support bell 1.

5] Fig. 5 is a section V-V from Fig. 4. In Fig. 5 the bearing eye 25 together with the support link 29 is illustrated by ghost lines. It is evident that the support link 29 is accommodated with slight play between the two side walls 8 and 9 of the recess 5 of the support wall 4 of the support bell 1 in the mounted state. Furthermore, from Fig. 5 it is likewise evident that the bearing eye 25 is accommodated with slight play in the support wall 4. It is also apparent that the height H of the support link 29 in the present embodiment is considerably smaller than the diameter D of the bearing eye 25. The effect thereby achieved is that the support wall 4 engages behind the bearing eye 25 and may not be removed in the direction of the arrow 35. The inevitable effect of this is that, when the pressure screw 14 is tightened, the support wall 4 of the support bell 1 is held tightly on the bearing eye 25.

00651 Fig. 6 is a perspective view of the damping bush 27, in the one end region of which the radially extended stop web 28 is provided. It is further evident from Fig. 6 that in the present embodiment of the damping bush 27 a form-fit element 60 extending over a partial angle is provided axially in front of this stop web 28. Given this design of the damping bush 27, during fitting of the damping bush 27 into the bearing eye 25 care has to be taken to ensure that the damping bush 27, after press-fitting into the bearing eye 25, lies with its form-fit element 60 diametrically opposite the support link 29 of the bearing eye 25, as is evident from Fig. 2.

0067] To enable such an alignment during the press-fit operation, the thrust piece 65 shown in Fig. 6 is provided. This thrust piece 65 has an axial cavity 66, which is adapted in shape to the form-fit element 60 of the damping bush 27 in such a way that the form fit element 60 is received with slight play in a corresponding angular alignment by the - 16 cavity 66. Thus, a specially predefined angular alignment of the thrust piece 65 relative to the damping bush 27 is achieved when the thrust piece 65 for press-fitting of the damping bush 27 is placed thereon. The thrust piece 65 moreover has in the region of its outer lateral surface 67 an externally visible mark 68, by means of which the thrust piece is alienable with a corresponding mark 69 (Fig. 7) of the support link 29 of the bearing eye 25.

[006 In Fig. 7 the thrust piece 65 is shown in the state, in which it is positioned against the damping bush 27 and/or against the radially projecting stop collar 28 thereof. In said case the form-fit element 60, which is illustrated by dashed lines in Fig. 7, engages in a corresponding manner into the cavity 66 (not visible) of the thrust piece 65. By virtue of this interlocking connection between the thrust piece 65 and the damping bush 27 a non-rotatable, defined connection is achieved between these two parts.

The thrust piece 65, when placed onto the bearing eye 25, is then aligned by its mark 68, in terms of the angular alignment, with the mark 69 of the support link 29.

006g] For pressing the damping bush 27 into the bearing bore 26 of the bearing eye 25 the hydraulic cylinder 46 plus its piston rod 45 is likewise provided, as illustrated in Fig. 8.

Here, instead of the thrust piece 49 of Fig. 4, a thrust piece 70 with a corresponding connecting piece 71 is provided in the connection socket 48 for the press-fit operation The thrust piece 70 is accommodated by its connecting piece 71 likewise in the axial bore 51 of the connection socket 48. The outside diameter of this thrust piece 70 and of its circumferential annular wall 72 directed towards the bearing eye 25 is in said case selected in such a way that the thrust piece 70 is frontally supported by its annular wall 72 on the annular end face 75 of the bearing eye 25.

booboo In the initial state prior to the press-fit operation illustrated in Fig. 8, the piston rod 45 projects right through the connection socket 48, the thrust piece 70, the bearing eye - 17 and the damping bush 27 with the mounted thrust piece 65. The flanged nut 56 is likewise screwed onto the external thread 55 of the piston rod 45 and supported by its circumferential support flange 57 against an axially projecting support ring 73 of the thrust piece 65. It is easy to imagine that, on activation of the hydraulic cylinder 46, the piston rod 45 is drawn into the hydraulic cylinder 46 in the direction of the arrow 40. By virtue of the hydraulic cylinder 46 being supported by the connection socket 48 and the thrust piece 70 against the bearing eye 25, the damping bush 27 is therefore pressed by means of the piston rod 45, the flanged nut 56 and the thrust piece 65 into the bearing eye 25 and/or the bearing bore 26 thereof.

[ooz,] Thus, here too, it is evident that the press-fit operation may be effected easily and reliably by means of the device according to the invention, in particular by means of the thrust piece 65 having a mark 68 for the angular alignment.

[ooze] Figs. 9 and 10 show a second embodiment of a support bell 1/1, which likewise comprises a rear wall 2/1 with a through-bore 3/1 (Fig. 9). At its end remote from the rear wall 2, the support bell 1/1 is likewise provided with a support wall 4/1 that is used to receive a bearing eye, as has already been described above in respect of the embodiment of the support bell 1 according to Figures 1 to 5.

[ooze] The support wall 4/1 of the illustrated second embodiment has two radially extending recesses 80 and 81, which in the illustrated embodiment are disposed with their planes of symmetry 82 and 83 extending approximately at right angles to one another in the support wall 4/1. In relation to the longitudinal centre line 7/1 of the support bell 1/1, diametrically opposite these two recesses the support wall 4/1 is provided in each case with a through-thread 84 and/or 85, which radially penetrates the support wall and into which a pressure screw 86 and/or 87 is screwable radially from the outside.

The respective radial longitudinal centre lines 88 and 89 of the two through-threads 84 - 18 and 85 lie in the respective plane of symmetry 82 and/or 83 of the respective associated recess 80 and/or 81. Accordingly, the two longitudinal centre lines 88 and 89 likewise extend substantially at right angles to one another, as is evident from Fig. 9.

1 1 In the peripheral region of the two through-threads 84 and 85 a radially outwardly directed hollow 90 is provided in the inner wall 115 of the support wall 4/1 and extends over an angle at circumference of approximately 180 . This hollow 90 is used to receive two clamping plates 91 and 92, which are fastenable in a rotatable manner in each case by means of an assembly bolt 93 and/or 94 on a journal 95 and/or 96 of the respective associated pressure screw 86 and/or 87.

booze] As is further evident from Fig. 9, the two clamping plates 91 and 92 each have a curved shape, the radius of curvature of which corresponds approximately to the internal radius of the support bell 1/1 or, as is evident in particular from Fig. 11, is designed slightly smaller than the internal radius of the support bell 1/1 and/or of the support wall 4/1. The respective inner faces 97 and 98 of the pressing plates 91 and 92 are designed such that they are stepped in axial direction and in the present embodiment form in each case a radial indentation 116 and/or 117 extending in peripheral direction and directed towards the leading front end, as is evident from Fig. 9. By means of the shoulder formed by this indentation 116, 117 both clamping plates 91 and 92 are supported during operation, i.e. when the support bell 1/1 is mounted by its support wall 4/1 on a bearing eye, axially against a corresponding, radially projecting shoulder of a bearing eye.

10076] It is further evident from Fig. 9 that the respective inner face 97 and/or 98 of each of the clamping plates 91, 92 has an axially extending radial indentation in the form of a central longitudinal groove 118 and/or 119. Such a design may be needed to - 19 accommodate corresponding radial projections of a bearing eye during operation. It is thereby ensured that the clamping plates 91 and 92 during operation lie with their (remaining) inner faces 97 and 98 flat on the outer lateral surface of a bearing eye that is to be received and are prevented from canting.

[ooze] Otherwise, the mode of operation of this embodiment of the support bell 1/1 with its support wall 2, its two pressure screws 86 and 87 as well as the two clamping plates 91 and 92 corresponds to the mode of operation of the support bell 1 of Figures 1 to 5, in particular as described with reference to Figs. 3 and 4. The two recesses 80 and 81 are in said case likewise used to receive a support link of a bearing eye when the support bell 1/1 is placed by its support wall 4/1 on the bearing eye, as described for the recess 5 of the support bell 1 in the embodiment of the support bell 1 of Fig. 3. In this case, the two recesses 80 and 81 are differently dimensioned so that the support bell 1/1 is placeable by its support wall 4/1 on bearing eyes having differently dimensioned support links and/or is either slidable or mountable onto such bearing eyes.

[ooze] As Fig. 10 reveals, the two clamping plates 91 and 92 in the assembled state are disposed side by side in peripheral direction and countersunk radially in the hollow 90.

By suitable radial adjustment of the two pressure screws 86 and 87 the two clamping plates 91 and 92 are displaceable radially inwards, so that the support bell 1/1 is placeable by its support wall 4/1 tightly on a bearing eye, as already described above in the embodiment according to Figures 1 to 5.

[oozes] As Fig. 10 further reveals, the support wall 4/1 in the region of its lower recess 81 has a plane, flattened portion 99. This embodiment with the flattened, radially inwardly offset portion 99 is provided for use on bearing eyes where the support link of the bearing eye is of an elbowed construction and, starting from the bearing eye, - 20 comprises first a radially extending portion, which is then adjoined by a link portion extending approximately parallel to the longitudinal centre line 7/1 (not shown in detail in the drawing). Thus, the support bell 1/1 is easily placeable by its recess on a support link of such a shape without there being any possibility of a collision with the link portion that extends parallel to and at a relatively small distance from the bearing eye. In the present embodiment, the smaller recess 80 corresponds in its dimensions to the recess 5 of the support wall 4 of Figs. 1 to 5, so that the support bell 1/1 is placeable by the recess 80 on the bearing eye 25 of Fig. 2 in an identical manner to that illustrated for the support bell 1 in Fig. 3.

booboo Fig. 9a shows an enlarged view of the pressure screw 86, the two pressure screws 86 and 87 being of an identical design. It is evident that the pressure screw 86 has a threaded portion 100, which at the end remote from the screw head 101 is adjoined axially by the journal 95, which is radially tapered and projects forward in axial direction from the threaded portion 100. In the region of this journal 95 a corresponding internal thread 103 is provided, into which the assembly bolt 93 for fixing the clamping plate 91 is screwable. The clamping plate 91 for mounting on the journal 95 is provided with a corresponding, stepped through-bore 104. For support in the stepped through-bore of the pressing plate 91, the journal 102 in the region surrounding the internal thread 103 forms a front annular end face 105.

[ooze] The second support plate 92 is of an identical design to the first support plate 92 and accordingly likewise has a stepped through-bore 106. The pressure screw 87 is also provided in the region of its journal 96 with a corresponding annular end face 107, as is evident from Fig. 9 and Fig. 11. In the present embodiment, the pressure screw 87 is supported in axial direction in the stepped through-bore 106 by this annular end face 107. In a corresponding manner, the pressure screw 86 is supported by its annular end face 105 in the stepped bore 104 of the clamping plate 91.

-44 4^r - 21 [00821 Fig. 9b is here by way of example an enlarged perspective view of the clamping plate 92 with its stepped through-bore 106. This through-bore 106 is in said case of an identical design to the through-bore 104 of the clamping plate 91. It is evident from Fig. 9b that the through-bore 106 has a radially extended, cylindrical counterbored hole 108, the axial depth of which is designed slightly smaller than the axial length of the journal 96. By virtue of this counterbored hole, the through-bore 106 forms a circumferential annular support face 109, against which the journal 96 is axially supported by its annular end face 107 in the mounted state, as may be seen from Fig. 11.

[oca3] Fig. 11 is a vertical section of the pressure screw 87 screwed into the through-thread of the support wall 4/1. It may be seen that the journal 96 of the pressure screw 87 is designed axially longer than the axial depth of the counterbored hole 108 of the through-bore 106 of the clamping plate 92. Because of this design, the clamping plate 92 is securely mounted in a rotatable manner on the journal 96 of the pressure screw 87. It is further evident from Fig. 11 that the assembly bolt 94 is screwed into a corresponding internal thread 110, which is disposed centrally coaxially with the circumferential annular end face 107 in the journal 96 and/or in the pressure screw 87.

It is also evident from the view of Fig. 11 that, when the pressure screw 87 is screwed in the direction of the arrow 111, the pressure screw 87 together with the mounted clamping plate 82 is displaceable in a radially inward direction.

[ooze] The embodiment of the support bell 1/1 according to Figures 9 to 11 is used, as already mentioned above, for selective placing on bearing eyes having a differently dimensioned support link as well as having possibly different outside diameters of the bearing eye itself. For this purpose, in the present embodiment it is advantageous that by means of the two clamping plates 91 and 92, which are radially displaceable independently of one another, a precise coaxial alignment of the support bell 1/1 by its an__,,_.... .. _ - 22 longitudinal centre line 7/1 with the centre of a bearing eye that is to be received may be reliably effected by suitable displacement of the two clamping plates 91 and 92. - 23

Claims

10085] Claims 0086] 1. A device for ejecting a bearing wherein the bearing

is press- fitted into a bearing eye disposed on a support link of a motor vehicle axle, comprising a thrust piece, a support bell as well as a pressing device by means of which the bearing is ejectable via the thrust piece from the bearing eye, wherein the support bell during the ejection operation is supported axially on the bearing eye, wherein the support bell for receiving the bearing eye comprises a support wall, which projects in the direction of the bearing eye and is provided with a recess, which receives the support link, and that the support wall is provided with a radially effective clamping device, by means of which the support bell is fixable by its support wall tightly on the bearing eye.

10087]

2. Device according to claim 1, wherein the clamping device comprises a radially displaceable clamping plate, which extends in the shape of an arc and is disposed in the support wall.

8]

3. Device according to claim 2, the clamping plate is disposed in the support wall diametrically opposite the recess of the support wall.

foot]

4. Device according to claim 2 or 3, characterized in that the clamping plate in its neutral, non-clamping position is disposed in a radially countersunk manner in a radial hollow of the inner wall of the support wall.

[OOgO]

5. Device according to claim 2, 3 or 4, wherein for radial displacement of the clamping plate and for applying the clamping forces a pressure screw is provided, which is screwed into a radially extending through-thread of the support wall.

1 g7]

6. Device according to claim 5, wherein the through-thread is disposed symmetrically relative to the hollow of the inner wall of the support wall and, that the - 24 pressure screw at the free end of its threaded shank has a radially tapered journal 'on which the clamping plate is rotatably supported by means of a bearing bore of the clamping plate.

1 g2]

7. Device according to claim 5, wherein the clamping plate (12, 91, 92) is fastened detachably to the journal (16, 95, 96) of the pressure screw (14, 86, 87) by means of an assembly bolt (19, 93, 94).

[ g31

8. Device according to claim 7, wherein between the clamping plate and the threaded shank of the pressure screw a washer is provided, by which the clamping plate is supported flat against the threaded shank.

stooge

9. Device according to claim 7, wherein the bearing bore of the clamping plate is of a radially stepped design and forms a circumferential annular support face, against which the pressure screw is supported axially by its journal.

1 g5]

10. Device according to one of claims 1 to 9, wherein the support wall of the support bell is provided with two or more recesses for receiving support links of different dimensions.

[OOg6]

11. Device according to claim 10, wherein there is associated with each of the two or more recesses a clamping device in the form of a clamping plate with pressure screw according to claims 2 to 9.

[oog7]

12. Device according to claim 11, wherein the clamping plates with their pressure screws are usable either individually or jointly in the support wall for the mounting and clamping of the support bell by its support wall on the bearing eye.

Bagel

13. Device according to one of claims 1 to 12, wherein for pressfitting the damping bush into the bearing bore of the bearing eye a thrust piece is provided, - 25 which for receiving the damping bush has at its one axial end a cavity, into which an axial projection of the damping bush is positively receivable.

Gregg]

14. Device according to claim 13, wherein the thrust piece is provided with an externally visible mark, by means of which the thrust piece together with the received damping bush is alienable in a predetermined angular position with a mark of the axle body or of the bearing eye.

[00100]

15. Device according to one of claims 1 to 14, wherein the clamping device has an inner face, which is directed towards the bearing eye and provided with a profiled surface.

booboo]

16. Device according to claim 15, wherein the inner faces of the clamping plates have indentations, which extend in peripheral direction and/or in axial direction and, when the support bell is in place on a bearing eye, are used to receive radially protruding projections of the bearing eye.