EP1698436B1 - Device for inserting and extracting a rearwardly closed wheel bearing - Google Patents

Abstract

A hydraulic cylinder (4) with a hollow piston (5) and an axially movable pressure bar (6) is joined to a pressure plate (2) with its threaded rear end (16, 9) inserted into a bore (3) with a threaded inner surface. Three support bars (17, 18, 19) are joined to the opposite side of the plate (2) and secured with screws (26). One of the bars (19) is provided with a threaded bore (34) transversally positioned at its rear end suitable for the insertion of a screw (33) with a hexagonal head (37) to be inserted into the claws or the socket of an appropriate wrench.

Description

The invention relates to a device for extracting and pressing a receivable in a bearing bore of a bearing housing of an axle body wheel bearing, according to the preamble of patent claim 1 ..

Devices for removing and / or pressing in wheel bearings have long been known. As an example, here are the publications DE 201 06 519.3 U1 . DE 89 08 237.0 U1 . DE 37 30 017 C1 such as DE 35 30 983 , C1 indicated.

All these devices of the cited documents have in common that they have several differently shaped printing plates or centering to make different assembly and / or disassembly operations on differently shaped axle bodies for exchanging Radflanschnaben and / or wheel bearings. In that regard, reference is made to the cited documents.

For assembly and disassembly it is for example off DE 93 15 919.6 U1 known to use a so-called perforated disc, which on Wheel flange of Radflanschnabe outside is attachable. By means of a suitable pressing device, which in the subject matter of DE 93 15 919.6 U1 is designed as a spindle drive, as well as different, on the wheel bearing or on the Achsbauteil supporting pressure plates, centering or support plates can be exchanged with said device, the Radflanschnabe and the wheel bearing of an axle of a motor vehicle.

In particular, for replacing the Radflanschnabe example shows the DE 89 08 237.0 U1 a supporting plate called support plate, which is U-shaped. This support plate has a U-shaped recess, with which the support plate between the wheel flange of Radflanschnabe and the Achsbauteil or the bearing housing of Achsbauteils can be introduced, so that this support plate is axially supported when pulling the Radflanschnabe from the associated wheel bearing on the bearing housing. Again, a pull spindle is used for pressing, which extends axially through the wheel hub.

In the conventional construction of such axle components with Radflanschnaben and wheel bearings is usually provided that the outside of the wheel flange, a brake disc is arranged, which is therefore in the assembled state between the wheel flange and the wheel to be mounted later of a motor vehicle. Furthermore, such axle components are provided with radially projecting mounting eyes for a brake caliper to which a caliper in the peripheral region of the brake disc is fixedly mounted.

From the DE 202 06 000.4 U1 is a device of the generic type is known, which is specifically designed for the removal and pressing of Radflanschnaben and wheel bearings with "internal" brake disc.

For this purpose, this device has a support plate which is stationary and releasably connectable at the distance to the axle body on the wheel flange axially opposite side of the axle body with the mounting eyes or the bearing eyes. Further, the support plate is provided with a support member, with which the support plate with a steering lever or another, radially projecting component of the axle body is fixedly engageable engaged. This support plate serves as an abutment for a pressing device, which is formed from a hydraulic cylinder. This hydraulic cylinder is fixedly connected via tie bolts with the hub flange. To pull out and to press in, the hydraulic cylinder on a press rod, which axially projects through the wheel hub during pressing and axially supported on the support plate.

With the above devices, the implementation of repair work on axle structures is thus not feasible, in which the wheel hub or the wheel bearing are closed. Consequently, in such axle designs, the press rod of a hydraulic cylinder or a pull spindle can not be guided through the wheel hub, so that it can not be supported correspondingly axially on the opposite side of the wheel bearing. In particular, the press-fitting of the wheel bearing into the bearing housing would be possible only by direct pressure on the wheel hub, provided that the known devices could ever be attached to the axle body, whereby the risk of damage to the wheel bearing would exist.

Accordingly, the invention has the object, a device of the generic type such that the replacement of closed Radflanschnaben and / or closed wheel bearings is easy and safe to carry out.

The object is achieved by the combination of the features of claim 1.

The inventive design, a device is provided with which it is possible in a simple and safe way to replace closed hubs or closed wheel bearings. The guide plate can be U-shaped, wherein the support flange extends over approximately 180 ° and can be brought over this angular range, on the one hand, on the rear side with the wheel hub flange and on the other hand with the outer bearing ring of the wheel bearing.

For this purpose, the recess of the pressure plate or the guide plate is formed with its support flange in their radial dimensions such that the support flange in the inserted between the hub and the bearing housing state extends radially inwardly to the "outer ring" of the wheel bearing. Thus, it can be brought into pressure contact, in particular for pressing the wheel bearing directly to the wheel bearing, so that the wheel bearing can be pressed without any damage in the bearing housing. The extraction takes place by direct train of the pressure plate or guide plate with its support flange or the guide plate itself, depending on the design of the wheel hub, on the radially projecting hub flange.

According to claim 2 it can be provided that the support flange of the guide plate is provided in the region of its radial inner edge with an axially projecting support web, with which the wheel bearing sunk into the bearing housing is pressed. The thickness of the support flange is adapted with its support web to the inside width of the intermediate space between the hub flange and the bearing housing such that after pressing the wheel bearing, the guide plate are moved with its support flange against the press-in towards the Radnabenflansches and taken out of the space can.

To increase the stability of the press plate, the guide plate according to claim 3 may be associated with a holding plate which is removably attached to the guide plate. This holding plate also has an approximately semicircular recess, which is bounded radially by a support flange. With the support flange, the retaining plate is inserted into the space between the hub flange of the wheel hub and the bearing housing of the axle body so that the support flange is axially supported during the extraction process back on the hub flange and the press-fitting on the wheel bearing. That During operation, the wheel hub is fully received in front of the guide plate and the retaining plate. To press in the wheel bearing, the wheel hub with the on the Radflanschnabe initially engaged with the guide plate, so that the guide plate is arranged with its support flange between the outer bearing ring of the wheel bearing and the hub flange. Subsequently, the retaining plate is fixedly connected to the guide plate, for example by screw, connected, so that the retaining plate with its support flange between the outer bearing of the wheel bearing and the Radnabenflansch passes. When pressing so extremely high pressing forces on the bearing ring can be applied concentrically, so that tilting or the like. The wheel bearing during pressing is safely excluded.

According to claim 4, the support flange of the holding plate in the region of its radial inner edge with an axially projecting Be provided support bar, so that even with the retaining plate, the wheel bearing can be sunk into the bearing housing sunk. The design of the support web corresponds to the configuration of the support web of the guide plate.

To apply the necessary tensile forces or pressing forces according to the invention further provided according to claim 5, that the pressing device has a support plate which is fastened by support rods fixed to the bearing eyes of the axle and that the pressing device has an axially adjustable to the support plate pressing rod, which with the press plate axially fixed coupled can be coupled. Upon activation of the pressing device, the pressing plate moves relative to the pressing device or relative to the support plate and thus also relative to the axle in the axial direction, so that depending on the direction of activation of the pressing device on the press plate optionally pulled on Radnabenflansch or pressed onto the wheel bearing. With this configuration, the device according to the invention can also be used directly on the vehicle. If such an insert on the vehicle is not desired, then the press plate can also be used in conjunction with a stationary press, which can be attached correspondingly to the axle body.

Further advantageous embodiments of the invention can be found in the further subclaims.

Thus, it can be provided according to claim 6, that for axial adjustment of the press plate, a coupling bridge is provided which is axially fixedly coupled during the pressing process with the press rod. Consequently, this coupling bridge moves along with the pressing rod so that, inevitably, the pressing plate is also moved in one or the other pulling or pressing direction. This coupling bridge can be like a bar in a simple form be formed, the length of which is greater than the diameter of the hub flange, so that the coupling bridge is mechanically coupled in a simple manner with the pressing process "behind" the hub flange arranged pressing plate. The press plate protrudes beyond the wheel hub flange at least partially in the radial direction. Instead of beam-shaped coupling bridge may also be formed plate-shaped or in any other suitable form.

According to claim 7 it can be provided that the press rod is part of a hydraulic cylinder, which is axially fixed interchangeable with the support plate in engagement and that the press rod has an adjusting thread, via which the press rod is axially adjustably received in an axially adjustable pressing piston of the hydraulic cylinder. By this configuration, extremely high pressing forces can be applied with the device according to the invention. Further, the pressing device is adaptable to different dimensions of the axle body by the axial adjustability of the press rod in the plunger of the hydraulic cylinder.

Due to the design according to claim 8, the press rod can be coupled with the coupling bridge extremely simple. For this purpose, it is provided that the pressing rod for pressing the wheel hub together with the wheel bearing with its adjusting thread with coupling bridge can be brought into train connection. For this train connection, the coupling bridge itself may be provided with an internal thread into which the adjusting thread of the press rod can be screwed. On the other hand, it can also be provided that the press rod is put through a corresponding through hole of the coupling bridge and "a backside" a pull nut is screwed onto the adjusting thread.

If an internal thread is provided, it can be provided according to claim 9 that this internal thread of the coupling bridge for the production of the train connection is part of a tension sleeve, which is arranged in a recess of the coupling bridge and is supported axially during the Auspressvorganges on an inner end wall of the recess. By this configuration, a screwing the press rod into the internal thread is extremely easy to carry out without an additional axial adjustment of the plunger is required.

For this purpose may be further provided according to claim 10, that the tension sleeve is held axially adjustable and non-rotatable via radially projecting into the recess of the coupling bridge in the coupling pin and that the coupling pins engage in adjusting slots of the tension sleeve radially. Due to the axial adjustability of the tension sleeve is adjustable with the threads of their internal threads on the threads of the adjusting thread of the press rod.

By provided in accordance with claim 11 Axialdruckfeder an automatic axial alignment of the threads of the internal thread of the tension sleeve is achieved in the axial displacement of the press rod with its adjusting thread on the threads of the press rod. In this case, the axial compression spring is axially supported axially on a sealing cover detachably screwed on the outside of the coupling bridge in the region of the depression.

By having according to claim 12 provided in the end region of the press rod printhead, the press rod with the coupling bridge for pressing the wheel bearing in a simple manner can be brought into pressure connection.

This printhead can be provided with an external hexagon according to claim 13, so that the pressing rod is axially adjustable in the pressing piston of the hydraulic cylinder in a simple manner.

For fixed coupling of the existing of the guide plate and the holding plate pressing plate with the coupling bridge spacers and connecting screws are provided according to claim 14. In this case, the guide plate and the retaining plate are preferably screwed together in their attached to the wheel hub state.

Due to the embodiment according to claim 15, the attachment of the wheel hub is considerably simplified together with the wheel bearing for pressing. For this purpose, it is provided that the pressure plate is provided with two guide holes, via which the pressure plate is guided concentrically to the bearing housing and the wheel hub on two of the support rods axially adjustable. To mount the wheel hub is inserted into the guide plate and moved against the bearing housing until the seated on the Radflanschnabe wheel bearing is in contact with the bearing bore of the bearing housing. Subsequently or in advance, the retaining plate can be attached to the wheel hub and bolted to the guide plate. Due to this guidance of the guide plate on the fixedly connected to the axle support rods thus the wheel hub is automatically aligned together with the wheel bearing concentric with the bearing bore, so that tilting during the subsequent press-in is safely excluded.

Due to the configuration according to claim 14 a cost-effective pressing device is provided with low weight, whereby the handling is greatly facilitated. For this purpose, it is provided that the hydraulic cylinder is designed as a single-acting hollow piston cylinder and is provided at its two axial ends with coupling elements, with which the hydraulic cylinder for selectively applying tensile or compressive forces to the support plate in different orientations into engagement can be brought.

As coupling elements here coupling thread or snap closures can be provided. In such a quick release may be a usable in a corresponding receiving bore of the support plate clutch cylinder, which is secured via transverse spigot or on the back in a radial groove of the clutch cylinder usable U-shaped locking plates in the receiving bore.

The device according to the invention is suitable for pulling and pressing wheel bearings, which are secured by means of conventional securing rings or else via a so-called locking collar or securing ring in the bearing housing. A ratchet or safety ring is pressed tightly onto the outer ring of the bearing and engages with radially resilient protruding securing tongues in a circumferential groove of the bearing bore of the bearing housing. Such backup or locking rings are used in recent times, since a fully automatic assembly line assembly of the wheel hub is made possible together with the wheel bearing in the bearing housing.

Fig. 1

eine perspektivische Explosionsdarstellung einer Presseinrichtung der erfindungsgemäßen Vorrichtung;

Fig. 2

eine perspektivische Explosionsdarstellung einer Kupplungsvorrichtung zusammen mit einer Pressplatte;

Fig. 3

eine perspektivische Explosionsdarstellung eines Achskörpers zusammen mit einer Radnabe und einem Radlager;

Fig. 4

eine Seitenansicht IV des Achskörpers mit montierter Radnabe;

Fig. 5

eine perspektivische Darstellung des Achskörpers mit montierter Radnabe und der Pressplatte aus Fig. 2;

Fig. 6

die Darstellung aus Fig. 5 mit der zwischen der Radnabe und dem Achskörper angeordneten Pressplatte;

Fig. 7

eine perspektivische Darstellung eines Achskörper mit daran montierter Presseinrichtung sowie einer mit der Radnabe in Eingriff stehender Pressplatte;

Fig. 8

einen perspektivischen Aufbruch eines Teils der Presseinrichtung sowie einer mit der Pressplatte gekoppelten Kupplungsbrücke;

Fig. 9

einen Querschnitt durch die Kupplungsbrücke, in welche eine Zughülse axial verstellbar eingesetzt ist;

Fig. 10

eine perspektivische Darstellung der kompletten am Achskörper und an der Radnabe angesetzten erfindungsgemäßen Vorrichtung unmittelbar nach dem Auspressen des Radlagers;

Fig. 11

eine perspektivische Darstellung der am Achskörper angesetzten Pressvorrichtung zusammen mit der an der Radnabe angesetzten Führungsplatte vor dem Einpressvorgang;

Fig. 12

einen Schnitt XII - XII auf Fig. 11 der erfindungsgemäßen Vorrichtung unmittelbar vor dem Einpressvorgang;

Fig. 13

die Schnittdarstellung aus Fig. 12 nach dem vollständigen Einpressen des Radlagers in das Lagergehäuse des Achskörpers.

Reference to the drawings, an embodiment of the invention will be explained in more detail below. It shows:

Fig. 1

an exploded perspective view of a pressing device of the device according to the invention;

Fig. 2

an exploded perspective view of a coupling device together with a pressure plate;

Fig. 3

an exploded perspective view of an axle body together with a wheel hub and a wheel bearing;

Fig. 4

a side view IV of the axle body with mounted wheel hub;

Fig. 5

a perspective view of the axle body with mounted wheel hub and the press plate Fig. 2 ;

Fig. 6

the presentation Fig. 5 with the pressure plate arranged between the wheel hub and the axle body;

Fig. 7

a perspective view of an axle body mounted thereon with pressing device and a standing with the wheel engaging pressure plate;

Fig. 8

a perspective break-up of a part of the pressing device as well as a coupling bridge coupled to the pressing plate;

Fig. 9

a cross section through the coupling bridge, in which a pulling sleeve is inserted axially adjustable;

Fig. 10

a perspective view of the complete attached to the axle and the wheel hub device according to the invention immediately after the pressing out of the wheel bearing;

Fig. 11

a perspective view of the attached to the axle body pressing device together with the attached to the wheel guide plate before the press-fitting;

Fig. 12

a section XII - XII on Fig. 11 the device according to the invention immediately before the press-fitting process;

Fig. 13

the sectional view Fig. 12 after completely pressing the wheel bearing into the bearing housing of the axle body.

Fig. 1 shows a pressing device 1 of the device according to the invention. This pressing device 1 consists in the present embodiment of a support plate 2, which has a central internal thread 3 has. This internal thread 3 is used for interchangeable receiving a hydraulic cylinder 4, which is designed as a so-called hollow piston cylinder and has an axially movable plunger 5. The pressing piston 5 is provided with an axially adjustable pressing rod 6, which is provided in its one end portion with a driving hexagon 7. This drive hexagon 7 axially opposite the press rod 6 has a print head 8, which is formed radially widened and is provided with key surfaces 38.

For coupling the hydraulic cylinder 4 with the support plate 2, this has, for example, in each case a coupling thread 9 and 10 in its two end regions.

Instead of such a coupling thread can also be provided as a quick release coupling cylinder as coupling elements, which can be used in a corresponding receiving bore of the support plate. To secure the clutch cylinder in the receiving bore may be provided radially or tangentially to the coupling cylinder extending into the receiving bore into projecting securing pin. Also, the clutch cylinder in the inserted state, the receiving bore completely protrude and be provided with a circumferential groove, in which, for example, a U-shaped locking plate for locking the clutch cylinder can be inserted. These embodiments are not shown in the drawing.

Since in the present embodiment, the rear coupling thread 9 is formed smaller in diameter than the internal thread 3 of the support plate 2, an adapter piece 11 is provided for coupling the coupling thread 9 of the hydraulic cylinder 4 with the internal thread 3 of the support plate 2, which has an external thread 12, with which the adapter piece 11 in the internal thread 3 of Support plate 2 can be screwed. To limit the depth of engagement, the adapter piece 11 has a radially expanded stop collar 13 in its front end region. For screwing in the coupling thread 9 of the hydraulic cylinder 4, the adapter piece 11 is provided with a corresponding internal thread 14.

It is easily conceivable that the hydraulic cylinder 4 via the adapter piece 11 fixed and interchangeable with the support plate 2 is engageable. Here, the hollow cylinder designed as a hydraulic cylinder 4 is acting unilaterally, so that when activated the plunger 5 at the in Fig. 1 shown orientation of the hydraulic cylinder 4 is adjusted in the direction of arrow 15. At the same time an adjustment of the press rod 6 is effected in the direction of the arrow 15, so that with this corresponding tensile forces can be applied.

The press rod 6 is formed in the present embodiment as a threaded rod and accordingly has an adjusting thread 16, via which the pressing rod 6 is variable relative to the pressing piston 5 axially adjustable. The adjusting thread 16 extends in the present embodiment of the pressing rod 6 over its entire axial length between the driving hexagon 7 and the radially expanded print head eighth

Out Fig. 1 is further recognizable that in the present embodiment, a total of three support rods 17, 18 and 19 are provided. Each of these support rods 17, 18 and 19 has the support plate 2 towards the front side in each case an internal thread 20, 21 and 22, via which the support rods 17, 18 and 19 are fixed and detachably connected to the support plate 2. For this purpose, the support plate 2 is correspondingly provided with three through holes 23, 24 and 25. Through these through holes 23, 24 and 25 corresponding mounting screws 26 are plugged through and accordingly with the internal threads 20, 21 and 22 of the respectively associated support rod 17, 18 and 19 engageable.

As an alternative to this embodiment, the support rods may also be provided with axially projecting threaded pins, which can be inserted through the through holes 23, 24 and 25 of the support plate 2 and fastened to the support plate 2 via corresponding mounting nuts.

Furthermore, it can be seen that the two cylindrically shaped support rods 17 and 18 in their, the internal threads 20 and 21 opposite end portion are each frontally provided with a second internal thread 27 and 28, in each of which a fastening screw 29 can be screwed. About this internal thread 27 and 28 and the mounting screws 29, the two support rods 17 and 18 are each fixedly connected to the mounting flange of an axle body. This will be explained in more detail below.

Here as well, axially projecting threaded pins can alternatively be provided, which can either be screwed into corresponding threads of the bearing eyes of an axle body or can be fastened to the bearing eyes via mounting nuts.

The third support rod 19 is provided in its, the internal thread 22 opposite end portion, with a mounting head 30, which has two mutually parallel mounting surfaces 31 and 32 in the present embodiment. Depending on the orientation of the support rod 19, this with its mounting head 30 with one of its two mounting surfaces 31 or 32, for example, on the bearing eye of a steering lever of an axle body attachable, as will be explained in more detail below.

For fixed mounting of the mounting head 30 on this bearing eye of the steering lever, a retaining screw 33 is provided in the present embodiment, which is plugged through the bearing eye of the steering lever and provided for screwing into an internal thread 34 of the mounting head 30 with a corresponding threaded pin 35. In this case, the retaining screw 33 in its, the threaded pin 35 opposite end portion, a radially enlarged cylinder portion 36, which serves for manually screwing the retaining screw 33 into the internal thread 34 of the mounting head 30. In order to tighten the retaining screw 33, a drive shaft 37 is provided in the axial extension of the cylinder portion 36, via which the retaining screw 33 can be tightened by means of a suitable key tool.

The pressing rod 6 is optionally, depending on the orientation of the hydraulic cylinder 4, with a coupling bridge 40 in tensile or pressure connection can be brought. This coupling bridge 40 is made Fig. 2 visible in perspective. It can be seen that this coupling bridge has a central through-bore 41, which is provided to the pressing rod 6 with a radially enlarged recess 42. With this recess 42, the coupling bridge 40 with the print head 8 of the press rod 6 is made Fig. 1 can be brought in pressure connection.

Next is out Fig. 2 can be seen in dashed lines that the through hole 41 is provided on its, the recess 42 axially opposite side, with a second, radially enlarged, greater than the recess 42 formed recess 43. This recess 43 is formed deeper in the axial length than the front recess 42 and serves to receive a tension sleeve 44th

This tension sleeve 44 can be used with little play and axially adjustable in the recess 43. For coupling with the adjusting thread 16 the compression rod 6, the tension sleeve 44 has a corresponding internal thread 45. For non-rotatable mounting of the tension sleeve 44 in the recess 43 two grub screws 46 are provided in the present embodiment, which can be screwed through corresponding opening into the recess 43, radially to the recess 43 extending through hole 47.

The grub screws 46 each have a coupling pin 48, with which the grub screws 46 in correspondingly arranged in the tension sleeve 44 longitudinal slots 49 are engageable. These longitudinal slots 49 are limited in their axial extent and thus limit the axial maximum possible travel of the tension sleeve 44 in the recess 43. For holding the tension sleeve 44 in the recess 43 is provided with a through hole 50 sealing cover 51 is provided.

The through hole 50 is used in operation to carry out the push rod 6 with its drive hexagon 7 in its the sleeve 44 screwed state. In order to press the tension sleeve 44 against the inner end wall 52 of the recess 43 resiliently yielding, a corresponding Axialdruckfeder 53 is provided. By this resiliently axially displaceable and non-rotatable mounting of the tension sleeve 44 in the recess 43 of the coupling bridge 40, a screwing of the adjusting thread 16 of the press rod 6 in the internal thread 45 of the tension sleeve 44 allows in a simple manner. In particular, due to the axial displaceability of the tension sleeve 44, the compression rod 6 with its adjusting thread 16 does not have to be axially adjusted to the axial position of the tension sleeve 44 with its internal thread 45.

For fixed mounting of the closure lid 51 two mounting screws 54 are provided in the present embodiment, which by two through holes 55 of the closure lid 51st can be plugged in and screwed into two internal threads 56 of the coupling bridge 40 accordingly.

How out Fig. 2 it can be seen, the coupling bridge 40 is formed like a bar in the present embodiment and extends from its central through hole 41 laterally symmetrical to the through hole 41. In its two side end portions 57 and 58, the coupling bridge 40 is provided with a through hole 59 and 60, respectively which in each case a connecting screw 61 and 62 can be inserted therethrough.

By means of these connecting screws 61 and 62, a pressing plate 65 is fixedly connected to the coupling bridge 40. To establish a defined axial distance of the pressure plate 65 to the coupling bridge 40, two spacer sleeves 66 and 67 are provided in the present embodiment, through which the two connecting screws 61 and 62 can be inserted therethrough.

Instead of this exemplified coupling bridge 40 may also be a plate-shaped or otherwise kind of coupling device may be provided, which finds place between the support rods 17, 18 and 19 and allows a coupling of the compression rod 6 with the pressure plate 65.

In the present embodiment, the pressure plate 65 consists of a guide plate 68 and a releasably connectable to this plate 69. For releasably connecting the guide plate 68 and the support plate 69 two connecting screws 70 and 71 are provided in the present embodiment, which through corresponding through holes 72 and 73 of the support plate 69 plugged through and into two correspondingly assigned internal thread 74 and 75 of the guide plate 68 are screwed, as in Fig. 2 is shown by way of example.

For fastening the coupling bridge 40 via the two connecting screws 61 and 62, the guide plate 68 and the holding plate 69 each have a corresponding internal thread 76 and 77, respectively.

Furthermore, it is off Fig. 2 it can be seen that the guide plate 68 has an approximately semicircular recess 80 towards the holding plate 69. Similarly, the holding plate 69 is also provided to the guide plate 68 with a semicircular recess 81. In the assembled state of the holding plate 69 on the guide plate 68, the two recesses 80 and 81 form a circular opening.

Furthermore, it is off Fig. 2 recognizable that the guide plate 68 and the holding plate 69 in the radial vicinity of their recesses 80 and 81 have a smaller thickness. In this case, the guide plate 68 and the holding plate 69 form the coupling bridge 40 toward a flat support surface 82 and 83, via which the guide plate 68 and the support plate 69 are supported at the rear of the wheel hub flange of a wheel hub during the extraction process of a wheel bearing.

In the present embodiment, the radial surrounding regions of the two semicircular or U-shaped recesses 80 and 81 form a kind of support flange 84 and 85, respectively in the radially inner region with an axially to each front end face 86 and 87 of the guide plate 68 and the holding plate 69 projecting, annular support bar 88 and 89 are provided. Accordingly, close radially outwardly to the two support webs 88 and 89 circular arc extending depressions 90 and 91 at.

During operation, ie in between a wheel hub and the arranged on the wheel hub wheel bearing state of the guide plate 68 and the support plate 69, the two support webs 88 and 89 axially on the outer bearing ring of a wheel bearing from. By the recessed arrangement of the recesses 90 and 91 thus a wheel bearing is sunk into the bearing housing of an axle body pressed until the guide plate 68 and the support plate 69 with their recesses 90 and 91 lie flat against the outer end face of the bearing housing.

For defined guidance of the pressure plate 65, the guide plate 68 has two through holes 92 and 93, over which the guide plate 68 and thus the fixedly mounted on the guide plate 68 retaining plate 69 is axially adjustably guided on the two support rods 17 and 18, as further below is explained.

Fig. 3 schematically shows an axle body 100, as used for example in motor vehicles. This axle body 100 has a central bearing housing 101, which forms a central bearing bore 102. For mounting the axle body 100 to further axle components, a bearing block 105 provided with two transverse bores 103 and 104 is provided in the upper end region of the axle body 100 in the present exemplary embodiment. In the lower end region of the axle body 100, this has a rearwardly arranged bearing web 106 with a corresponding receiving bore 107, via which the axle body 100 can be coupled, for example, with the ball joint of a transverse link of a motor vehicle axle. The bearing block 105 is usually used to couple the axle body 100 with a shock absorber.

Next is out Fig. 3 it can be seen that the axle body 100 has a laterally projecting articulation lever 108, which is provided at its outer end with a bearing eye 109. This bearing eye 109 has for coupling with other axle components of a motor vehicle axle in the illustrated embodiment, a corresponding through hole 110.

Furthermore, it is off Fig. 3 can be seen that the axle body 100 is provided on its side opposite the linkage lever 108 side with two mounting eyes 111 and 112, which in turn are provided with corresponding mounting holes 113 and 114. As is known, such mounting eyelets serve 111 and 112, as in Fig. 3 are shown by way of example, for mounting a brake caliper on the axle body 100.

With these mounting eyes 111, 112, the pressing device 1 is off Fig. 1 via its two support rods 17 and 18 fixed to the axle body 100 mountable. The third support rod 19 with its mounting head 30 is in turn fixedly coupled to the bearing eye 109 of the coupling lever 108. Thus, the pressing device 1 with its support plate 2 and the hydraulic cylinder 4 is fixedly mounted on the support rods 17, 18 and 19 on the axle body 100 and on its bearing lugs 109, 111 and 112 fixed.

Further shows Fig. 3 in a perspective view of a wheel hub 115 on which a wheel bearing 116 is fixedly arranged. The wheel hub 115 forms a radially enlarged wheel hub flange 117 in the region of its end protruding from the wheel bearing 116. This wheel hub flange 117 serves to receive a brake disk and a wheel of the motor vehicle during normal operation of a motor vehicle, for which purpose this wheel hub flange 117 is provided with a plurality of internal threads 118 is.

The wheel hub 115 is rotatably mounted in the bearing housing 101 of the axle body 100 in the normal operation of the motor vehicle via the wheel bearing 116. For this purpose, the wheel bearing 116 is pressed into the bearing bore 102 of the bearing housing 101. Such a ready assembled state the wheel hub 115 in the bearing housing 101 of the axle body 100 shows Fig. 4 in a side view IV Fig. 3 ,

How out Fig. 4 can be seen is in this mounted state between the outer end face surface 119 (see also Fig. 3 ) of the bearing housing 101 and the hub flange 117, a gap 120 is formed, which extends radially to the flange 116 received in the wheel bearing 121. It can be seen that the flange hub 121 has a significantly smaller diameter than the wheel bearing 116 and the bearing housing 101. Next is off Fig. 4 indicated by the dashed line 122, that the wheel bearing 116 is axially recessed in the illustrated operating position, that is arranged offset back to the end face 119 of the bearing housing 101.

The peculiarity of the wheel hub 115 and the wheel bearing 116 is in this embodiment, that the hub 115 has no central through hole. Furthermore, the wheel bearing 116 is closed by a closure lid, not shown in detail in the drawing. Because of this particular embodiment of this axle construction, it is now not possible to remove the wheel bearing 116 from the bearing housing 101 by means of a pulling spindle projecting through the wheel hub 116.

A pressing of the wheel bearing 116 via the hub 115 is also not possible with the conventional devices, since there would be a danger in this press-fitting process that the wheel bearing 116 would be damaged by the extremely high axial pressing forces. Especially for this extraction or pressing the device of the invention is provided.

Fig. 5 shows a perspective view of the axle 100 mounted in the wheel hub 115, which with its in Fig. 5 non-visible wheel bearing 116 rotatably mounted in the bearing housing 101 is. The wheel hub 115 has in this mounted position with its hub flange 117 at an axial distance from the front end ring surface 119 (shown in dashed lines) of the wheel bearing housing 101.

In the out Fig. 4 apparent intermediate space 120 between the wheel hub flange 117 and the front end ring surface 119, the pressure plate 65 is now initially used with its guide plate 68 radially. The guide plate 68 comes with its support surface 82 flat against the back of the wheel hub flange 117 to the plant. In this inserted into the intermediate space 120 state of the guide plate 68, the holding plate 69 can be mounted on this. For this purpose, the guide plate 68 diametrically opposite also in the intermediate space 120 between the wheel hub 117 and the end face 119 of the bearing housing 101 radially inserted.

The dimensions of both the semicircular recess 80 of the guide plate 68 and the semicircular recess 81 of the holding plate 69 are selected so that the flange hub 121 (FIG. Fig. 4 ) is received with play in the formed by these two recesses 80 and 81 through hole. That is, the pressure plate 65 arranged in the intermediate space 120 is freely rotatable both relative to the bearing eye 101 and relative to the wheel hub flange 117, as is particularly clear Fig. 6 is apparent.

Next, the pressing plate 65 with the through holes 92 and 93 is adjusted about the rotation axis 125 of the wheel hub 115 in its angular position such that the through hole 92 coaxial with the mounting eye 111 and the through hole 93 is aligned coaxially with the bearing eye 112 of the axle body 100, as is apparent from Fig. 6 is recognizable. It is off Fig. 6 Further, it can be seen that the holding plate 69 is fixedly connected to the guide plate 68 via the two connecting screws 70 and 71, so that the guide plate 68 together with the holding plate 69 forms a stable, uniform pressure plate 65.

After the pressing plate 65 consisting of the guide plate 68 and the holding plate 65 is fitted in the intermediate space 120 between the wheel hub flange 117 and the outer end face 119 of the bearing housing 101, as is apparent from FIG Fig. 6 can be seen, now the two support rods 17 and 18 through the correspondingly assigned through holes 92 and 93 of the guide plate 68 can be inserted and with the correspondingly associated bearing eyes 111 and 112 on the off Fig. 3 apparent mounting holes 113 and 114 can be brought into connection, as is apparent from Fig. 7 for the support rod 17 and the bearing eye 111 of the axle body 100 can be seen. For fixed installation of the two support rods 17 and 18, the two fastening screws 29 are provided, which in Fig. 7 are not visible.

Subsequently, the support rod 19 can be brought with its mounting head 30 with the bearing eye 109 of the axle 100 in connection. For this purpose, the mounting head 30 is placed, for example, with its lower mounting surface 32 on the bearing eye 109 and the retaining screw 33 through the Fig. 3 apparent through hole 110 of the bearing eye 109 inserted through and brought into engagement with the internal thread 34 of the bearing head 30. Before the retaining screw 33 is tightened, the support plate 2 with the support rods 17, 18 and 19 on their axis of the body 100 opposite sides can be fastened. For this purpose, the mounting screws 26 are provided, as is made Fig. 7 is apparent.

After the fixed mounting of the support plate 2 to the three support rods 17, 18 and 19, the retaining screw 33 can now be tightened so that the support rods 17, 18 and 19 together with the support plate 2 and the axle 100 a fixed Form unity. In this case, the approximately triangular shape of the holding plate 69 is selected such as in particular Fig. 7 It can be seen that the retaining plate 69 can not collide with the support rod 19. In particular, the retaining plate 69 after loosening or removing the two connecting screws 70 and 71 (in Fig. 4 only the connecting screw 70 recognizable) are removed from the axle body 100, which will be explained again later.

Now that the support plate 2 has been fixedly connected to the support rods 17, 18 and 19 in connection, now the hydraulic cylinder 4 is brought via the adapter piece 11 with the support plate 2 in connection. In the in Fig. 4 shown fully assembled position of the hydraulic cylinder 4 extends with its central press rod 6 coaxial with the axis of rotation 125 of the hub 115. Here, the hydraulic cylinder 4 is formed in the present embodiment as a single-acting hollow piston cylinder, and is used in his in the Fig. 7 to 10 Selected orientation for removing the seated on the wheel hub 115, from Fig. 3 apparent wheel bearing 116 as a pulling device.

That is, upon activation of the hydraulic cylinder 4 whose plunger 5 is moved in the direction of arrow 15. In this case, the press rod 6 extends through its adjusting thread 16 and its drive hexagon 7, the support plate 2 to the wheel bearing 115 out. In order to be able to apply tensile forces to the pressure plate 65, the coupling bridge 40 with the connecting screws 61 and 62 and the two spacers 66 and 67 is made Fig. 2 intended. The arrangement of the support rod 17, 18 and 19 is chosen so that the coupling bridge 40 with its through hole 41 coaxial with the axis of rotation 125 extending between the support plate 2 and the hub 115 can be used.

This shows Fig. 8 a perspective partial section, in which the sake of clarity, the support plate 2 with the hydraulic cylinder 4 is not shown and the support rods 17 and 19 shown in section. Out Fig. 8 In this case, the adjusting thread 16 of the pressing rod 6 and the driving hexagon 7 can be seen in the perspective partial section.

In her in Fig. 8 shown attached to the press plate 65 state of the coupling bridge 40 are the two connecting screws 61 and 62 in the corresponding from Fig. 7 recognizable internal thread 76 and 77 of the guide plate 68 and the retaining plate 69 is screwed. Between the coupling bridge 40 and pressing plate 65 and the guide plate 68 and the holding plate 69, the two spacers 66 and 67 are arranged. Thus, the coupling bridge 40 is stationary via the two connecting screws 61 and 62 and the spacer sleeves 66 and 67 with the pressure plate 65 in connection.

By turning the press rod 6 via its print head 8 or its outer hexagon 38 in the direction of the arrow 126, the press rod 6 engages with its adjusting thread 16 with the internal thread 45 of the tension sleeve 44 inserted into the coupling bridge 40. Here is in Fig. 8 for reasons of clarity, the tension sleeve 44 is not explicitly shown. Since the threads of the adjusting thread 16 do not generally coincide axially with the threads of the internal thread 45 of the tension sleeve 44, the tension sleeve 44 is received axially adjustably in the coupling bridge 40. This shows Fig. 9 a vertical cross section through the coupling bridge 40th

Out Fig. 9 It can be seen that the tension sleeve 44 is inserted into the recess 43 of the coupling bridge 40. In this case, the tension sleeve 44 has a radial play for the recess 43, so that it is axially adjustable. The two grub screws 46 are in the corresponding, radially extending through threads 47 of the coupling bridge 40 screwed in and project radially into the recess 43 of the coupling bridge 40 inside. The two coupling pins 48 of the grub screws 46 engage in the diametrically opposed longitudinal slots 49 of the tension sleeve 44.

It can be seen that the longitudinal slots 49 are arranged and have such an axial length that the tension sleeve 44 from the in Fig. 9 shown starting position in the direction of arrow 126 is limited adjustable. In the illustrated initial position of the tension sleeve 44, this lies flat against the end wall 52 formed by the depression 43. In this in Fig. 9 illustrated initial position, the tension sleeve 44 is held by the Axialdruckfeder 52. The recess 43 is secured in this mounted state of the tension sleeve 44 by the externally mounted on the coupling bridge 40 closure lid 51.

Now, if the compression rod 6 is screwed with its adjusting thread 16 in the direction of arrow 126 through the through hole 41 of the coupling bridge 40, so it comes to a corresponding travel with its adjusting thread in the axial region of the internal thread 45 of the tension sleeve 44th As a rule, the Threads of the adjusting thread 16 do not coincide with the threads of the internal thread 45 in the axial direction, the tension sleeve 44 is now displaced in the direction of arrow 126 until the threads of the adjusting thread 16 of the compression rod 6 with the threads of the internal thread 45 of the Pull sleeve 44 in axial agreement. Subsequently, upon further rotation of the pressing rod 6 in the direction of the arrow 126, the adjusting thread 16 is screwed into the internal thread 45 of the pulling sleeve 44.

It can be provided that the compression rod 6 through the tension sleeve 44, the Axialdruckfeder 53 and through the through hole 50 of the closure lid 51 in the in Fig. 9 Position of the driving hexagon 7 shown in phantom lines is adjusted. After reaching this position, the hydraulic cylinder 4 can now be activated, so that the plunger 5 together with the pressing rod 6 in the direction of the arrow 15 from Fig. 7 moves and the tension sleeve 44 after a short travel again in the in Fig. 9 shown starting position.

Thus, now the pressing rod 6 is about its adjusting thread 16 and the tension sleeve 44 with the coupling bridge 40 in axial tension, so that upon further activation of the hydraulic cylinder 4, the coupling bridge 40 and thus the pressing plate 65 is pulled in the direction of arrow 15. In this adjusting movement, the guide plate 68 slides along the two support rods 17 and 18, wherein in this adjusting movement in the direction of arrow 15 at the same time with the pressing plate 65 in engagement wheel hub 115 together with in the Fig. 7 and 8th unrecognizable wheel bearing 116 from the axle body 100 and its bearing eye 101 is pulled out.

The end of this extraction process is in Fig. 10 shown. It can be seen that at the end of the adjusting movement of the plunger 5 of the hydraulic cylinder 4 has moved out of this in the direction of the arrow 15 and thus the coupling bridge 40 has been pulled over the adjusting thread 16 of the press rod 6 also in the same direction. Accordingly, the pressure plate 65 was pulled with its guide plate 68 and its support plate 69 in this direction. This gets in the Fig. 10 unrecognizable wheel bearing with the bearing housing 101 of the axle body 100 disengaged.

Now, the two connecting screws 70 and 71 (in Fig. 1 only one recognizable) removable. Thereafter, the holding plate 69 after also the connecting screw 62 has been released, be removed from the wheel hub 115. The shape of the holding plate 69, as it is made Fig. 10 can be seen, selected such that the holding plate 69 between the two tie rods 18 and 19 can be removed down. None of the tie rods 18 or 19 must be removed for this removal of the retaining plate 69.

After the retaining plate 69 has been removed, the wheel hub 115 can now be removed together with the wheel bearing 116 from the guide plate 68. Subsequently, the wheel hub 115 is provided with a new wheel bearing and is again pressed into the bearing housing 101 of the axle body 100 by means of the device according to the invention.

For this purpose, first the wheel hub 115 is brought into engagement with the wheel bearing 116 with the guide plate 68, as is apparent from Fig. 11 is apparent. Subsequently, in turn, the holding plate 69 is fixedly mounted on the guide plate 68. The guide plate 68 and the retaining plate 69 engage with their two support flanges 84 and 85 in the intermediate space 120 between the wheel hub flange 117 and the wheel bearing 116. Fig. 12 shows by way of example this intervention, wherein in Fig. 12 a partial section XII - XII Fig. 11 is shown, which runs in the parting plane of the guide plate 68 and the holding plate 69.

Next is out Fig. 11 It can be seen that the hydraulic cylinder 4 is mounted on the support plate 2 in the orientation rotated by 180 °. For this purpose, it is screwed with its external thread 10 in the support plate 2. As mentioned above, here also another suitable connection, in particular a quick release, between the hydraulic cylinder 4 and the support plate 2 may be provided. By this rotation of the press rod 6, the print head 8 with the recess 42 of the coupling bridge 40 can be brought into engagement. Upon activation of the hydraulic cylinder 4 whose is in Fig. 11 unrecognizable pressure piston adjusted together with the press rod 6 in the direction of arrow 126, thereby causing a corresponding adjusting movement of the coupling bridge 40 is effected. Is the retaining plate 69 (in Fig. 11 not shown) mounted on the guide plate 68, the wheel hub 115 is pressed together with the wheel bearing 116 in the bearing housing 101 of the axle body 100 by this adjusting movement.

Fig. 12 shows, as already mentioned above, the starting position before pressing out Fig. 11 in partial section. It can be seen that the wheel bearing 116 is arranged directly in front of the bearing bore 102 of the bearing housing 101. By guiding the guide plate 68 on the two support struts 17 and 18, only a slight alignment of the wheel hub 115 together with the wheel bearing 116 is required because the wheel hub 115 is received with slight radial play in the recesses 80 and 81 of the guide plate 68 and the holding plate 69 is. In particular, the guide plate 68 can be attached to the bearing housing together with the holding plate 69 and the received wheel hub 115 with the wheel bearing 116 by hand. By guiding the guide plate on the two support rods 17 and 18, the wheel bearing 116 remains in its position on the bearing housing 101 position.

Furthermore, it is off Fig. 12 recognizable that the print head 8 of the press rod 6 is received in the radially enlarged recess 42 of the coupling bridge 40. Also are in Fig. 12 the two bearing lugs 111 and 112 of the axle body 100 can be seen, on which the two support rods 17 and 18 are fixedly mounted by means of the fastening screws 29. Furthermore, the support rods 17 and 18 are fixedly mounted on the support plate 2 via the mounting screws 26. Also is off Fig. 12 recognizable that the hydraulic cylinder 4 is screwed via its coupling thread 10 directly into the internal thread 3 of the support plate 2.

It is now easy to imagine that upon activation of the hydraulic cylinder 4 whose plunger 5 is moved in the direction of arrow 126, thereby characterized on the guide plate 68 and the in Fig. 12 unrecognizable retaining plate, the wheel bearing 116 is pressed into the bearing bore 102 of the bearing housing 101. For this purpose, the wheel bearing 116 is supported on the axially projecting support webs 88 (and 89) of the guide plate 68 (and the holding plate 69), wherein in Fig. 12 only the support bar 88 of the guide plate 68 can be seen.

By this configuration of the support web 88 and the support web 89, the wheel bearing 116 is sunk into the bearing bore 102 of the bearing housing 101 of the axle body 100, as can be impressed Fig. 13 is recognizable. It can be seen that the plunger 5 of the hydraulic cylinder 4 has moved out of the hydraulic cylinder in the direction of the arrow 126 out. Thus, the hub 115 is together with the wheel bearing 116 back in the in Fig. 7 illustrated pressed-in position.

It is clear that the wheel bearing 116, together with the wheel hub 115, as described, in the simplest way by the inventive device is interchangeable.

This device according to the invention can advantageously be used in cases in which no pull or push rod can be inserted through the wheel hub 115 or through the wheel bearing 116. For this purpose, the support rods 17, 18 and 19 are provided in particular in an advantageous manner, via which the support plate 2 axially fixed on the axle can be fixed, as this particular Fig. 7 is recognizable. Due to this configuration, it is possible in a simple manner via the pressure plate 65 consisting of the guide plate 68 and the holding plate 69, the Remove wheel hub 115 together with the wheel bearing 116 from the bearing housing 101 of the axle body 100 and also press again.

Due to the two support webs 88 and 89 of the support flanges 84 and 85 of the guide plate 68 and the support plate 69, a recessed arrangement of the wheel bearing 116 in the bearing housing 101 can be achieved. If a countersunk arrangement is not provided, a guide plate and a holding plate can also be provided which have a flat support flange 84 or 85 without the axially projecting support webs 88 and 89, respectively.

Claims (16)

1. Device for extracting and pressing in a wheel bearing (116) which can be mounted in a bearing bore (102) of a bearing housing (101) of an axle body, by means of which wheel bearing a wheel hub (115) comprising a wheel hub flange (117) is mounted securely rotatably and axially in the bearing housing (101), the device consisting of a pressing device (1) and a pressing plate (65), which by means of a support flange (84, 85) can be arranged in an intermediate space (120) between the wheel hub flange (117) of the wheel hub (115) and the bearing housing (101) of the axial body (100), wherein the axial body (100) is provided with a plurality of bearing eyes (109, 111, 112), which are used to mount additional axle components or a brake calliper, characterised in that the pressing device (1) can be fixed onto the axle body (100) and in that the pressing plate (65) can be adjusted by means of the pressing device (1) and forms a guide plate (68), which comprises an approximately semi-circular recess (80), which is radially delimited by the support flange (84) and in that the guide plate (68) with its support flange (84) can be pushed into the intermediate space (120) between the wheel hub flange (117) of the wheel hub (115) and the bearing housing (101) of the axle body (100) such that the support flange (84) during the extraction process is supported axially at the rear on the wheel hub flange(117) and during the pressing in process on the wheel bearing (116).
2. Device according to claim 1, characterised in that the support flange (84) of the guide plate (68) is provided in the region of its radial inner edge with an axially projecting support web (88), by means of which the wheel bearing (116) can be pressed into the bearing housing (101) in a recessed manner.
3. Device according to claim 1 or 2, characterised in that a holding plate (69) is assigned to the guide plate (68), which holding plate is secured detachably onto the guide plate (68) and in that the holding plate (68) comprises an approximately semi-circular recess (85), which is radially delimited by a support flange (85) and
   in that the holding plate (69) with its support flange (85) can be pushed into the intermediate space (120) between the wheel hub flange (117) of the wheel hub (115) and the bearing housing (101) of the axle body (100), such that the support flange (85) is supported axially on the wheel hub flange (117) on the rear side during the extraction operation and is supported axially on the wheel bearing (116) during the pressing in process.
4. Device according to claim 3, characterised in that the support flange (85) of the holding plate (69) is provided in the region of its radial inner edge with an axially projecting support web (89), by means of which the wheel bearing (116) can be pressed into the bearing housing (101) in a recessed manner.
5. Device according to any one of claims 1 to 4, characterised in that the pressing device (1) comprises a support plate (2), which can be secured stationarily to the bearing eyes (109, 111,112) of the axle body (100) by means of support rods (17, 18, 19), and in that the pressing device (1) comprises a pressing rod (6) which is adjustable axially in relation to the support plate (2) and which can be coupled to the pressing plate (65) in an axially fixed manner.
6. Device according to any one of claims 1 to 5, characterised in that a coupling bridge (40), which is coupled to the pressing rod (6) in an axially fixed manner for extracting and pressing in the wheel bearing (116), is provided for the axial adjustment of the pressing plate (65).
7. Device according to claim 6, characterised in that the pressing rod (6) is part of a hydraulic cylinder (4), which is in engagement in an axially fixed replaceable manner to the support plate (2) and in that the pressing rod (6) comprises an adjusting thread (16), by means of which the pressing rod (6) is mounted axially adjustably in an axially adjustable pressing piston (5) of the hydraulic cylinder.
8. Device according to claim 7, characterised in that the pressing rod (6) can be brought into pulling connection with the coupling bridge (40) with its adjusting thread (16) to extract the wheel hub (115) together with the wheel bearing (116).
9. Device according to claim 8, characterised in that to establish the pulling connection, the coupling bridge (40) comprises an internal thread (45), which is part of a pulling sleeve (44), which is arranged in a recess (43) of the coupling bridge (40) and is axially supported on an inner front ring wall (52) of the recess (43) during the extraction process.
10. Device according to claim 9, characterised in that the pulling sleeve (44) is held axially adjustably and non-rotatably by means of coupling pins (48) protruding radially into the recess (43) of the coupling bridge (40), and in that the coupling pins (48) engage radially in adjusting slots (49) of the pulling sleeve (44).
11. Device according to claim 8 or 9, characterised in that the pulling sleeve (44) in the recess (43) is pressed against the front ring wall (52) by an axial compression spring (53), and in that the axial compression spring (53) is axially supported on a closing cover (51) which is screwed detachably on the outside of the coupling bridge (40) in the area of the recess (43).
12. Device according to any one of claims 5 to 11, characterised in that said pressing rod (6) in its one end section comprises a pressing head (8), by means of which the pressing rod (6) can be brought into pressing connection with the coupling bridge (40) for pressing in the wheel bearing (116).
13. Device according to claim 12, characterised in that the pressing head (8) is provided with an external hexagon (38).
14. Device according to any one of claims 3 to 13, characterised in that spacer sleeves (66, 67) as well as connecting screws (61, 62) are provided for the fixed coupling of the pressing plate (65) comprising the guide plate (68) and the holding plate (69) with the coupling bridge (40).
15. Device according to any one of claims 5 to 14, characterised in that the pressing plate (68) is provided with two guide bores (92, 93), by means of which the pressing plate (65) is guided concentrically to the bearing housing (101) and the wheel hub (115) on two of the support rods (17, 18) in an axially adjustable manner.
16. Device according to any one of claims 7 to 15, characterised in that the hydraulic cylinder (4) is designed in the form of a hollow piston cylinder (4) and is provided at both axial ends with coupling elements (9, 10), by means of which the hydraulic cylinder (4) can be brought into fixed engagement with the support plate (2) in different orientations to apply either pulling or pushing forces as desired.

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