EP1785233A2 - Device for disassembly of axle parts - Google Patents

Abstract

The device has supporting units (17) arranged at two supporting arms (10, 11). A control device radially shifts the supporting units symmetrical to a pressing device such that the pressing device is aligned concentric to a bearing house. Each unit has a supporting base (21) with a supporting plate (29) that runs transverse to a direction of movement of the pressing device and is brought in contact with the bearing house.

Description

The invention relates to a device for disassembling a Radflanschnabe rotatably and axially fixedly received via a wheel bearing in a bearing housing of an axle body, consisting of a supporting crosspiece having a supporting device, via which the device is axially supported on the bearing housing and a central Radflanschnabe the projecting pulling device, which with the Radflanschnabe can be brought into train connection.

Devices of the generic type are used, for example, to take off Radflanschnaben together with the seated on the Radflanschnabe wheel bearing. Such Radflanschnaben are known in a variety of refinement from the field of automotive technology and provided with a wheel flange, which serves, inter alia, for mounting a wheel of a motor vehicle. For storage of the wheel on the Radflanschnabe in an axle body of a motor vehicle axle, the Radflanschnabe on a bearing hub, which is rotatably supported via a wheel bearing in a bearing bore of a bearing housing of the axle body. In this case, the wheel flange of Radflanschnabe is always formed larger in diameter than the diameter of the bearing hub and as the diameter of the wheel bearing. In the assembled state of Radflanschnabe the axle body is between the wheel flange and the bearing housing of the axle generally a gap exists.

To remove or disassemble the Radflanschnabe from the wheel bearing or together with the wheel bearing from the bearing housing is from the DE 89 08 237 a device of the generic type is known, which has a support plate referred to as a support plate. This support cross member is provided with a pulling device in the form of a threaded spindle, which is supported axially via an axial thrust bearing on the support cross member and which is rotatably received in the support cross member via this thrust bearing. For axial support on Axialdrucklager the threaded spindle is provided with a radially enlarged, circumferential annular collar, which is followed axially outwardly by a drive hex, via which the threaded spindle with a suitable key tool is rotatably driven. In use, the threaded spindle extends through the bearing hub of the wheel hub flange. On its the drive hexagon opposite and protruding from the bearing hub end a nut is screwed. When tightening the threaded spindle, the tension nut is essentially supported at the end face on the bearing hub of Radflanschnabe, so that it is pulled in the axial direction.

For the axial support of the support cross member on the axle body, a support plate is provided in the known device, which is connected via two fixedly attached to the support bar support struts with the support bar in combination. The distance of the support struts is chosen to be greater than the outer diameter of the wheel flange of Radflanschnabe, so that the wheel flange between them when attaching to the axle is receivable.

The support plate has a U-shaped recess, which is dimensioned so that the support plate in the surrounding region of the wheel bearing on the bearing housing of the axle body can be attached. The support plate has a support lip, which serves for support on the bearing housing in the surrounding area of the wheel bearing. The support lip runs along the U-shaped recess and is arranged in the support cross-section facing edge region of the recess. This support lip is dimensioned in its dimensions, in particular in its thickness such that it can be introduced between the wheel flange and the bearing housing and is supported on the front side of the bearing housing in the surrounding area of the wheel bearing. That is, the support lip formed thinner in thickness than the support plate itself. In order to use this device for different sized axle with different sized bearing housings, in particular different support plates are provided with differently shaped U-shaped recesses. Next is this according to the DE 89 08 237 also proposed to provide the support plate with a relatively large U-shaped recess, in which different sized, U-shaped inserts are used interchangeably. These inserts can be fixed by means of screw in the U-shaped recess.

Since the support lip to the bearing housing protrudes beyond the recess only a few millimeters, it is necessary in this known construction, even with slightly different dimensioned axle bodies or bearing housings to provide another use or another support plate with adapted recess. On the one hand, this is costly and on the other hand makes the use even more difficult, since the selection of the "correct" support plate or the correct insert is not always visually recognizable. Although here are support plates with larger recesses for slightly smaller dimensioned axle or bearing housing used, but in these cases a concentric attachment of the device is difficult on the bearing housing.

Accordingly, the invention has for its object to design a device of the generic type such that it expresses easily and variably dimensioned differently Achskörper and their bearing housing is customizable, with a concentric attachment to the bearing housing should be guaranteed.

The object is achieved according to the invention together with the features of the preamble of claim 1, characterized in that the support bar forms at least two radially extending to the drawbar support arms, on which displaceable relative to the support bar supporting elements are arranged, each having a support leg, for axial support on the bearing housing is provided with a transverse to the pulling direction support plate and that the two are diametrically opposed with respect to the traction elements via an adjusting device symmetrically adjustable to the traction device and that the adjusting device is fixedly arranged in the region of the traction device on the support beam.

Due to the configuration of the invention, a device is provided, which is extremely variable especially for extracting Radflanschnaben but also for disassembly of other via a bearing bore and a journal connected axle components can be used.

For this purpose, the support bar forms at least two support arms, on each of which a support element is slidably disposed. These support elements each have a support leg, which in turn is provided with a support plate. This support plate extends transversely to the pulling direction of the pulling device and can be brought into engagement with the bearing housing of the axle body. The design of the support plate is adapted to the shape and dimensions of the respective bearing housing and the wheel bearing such that the best possible power transmission is ensured during operation. For safe concentric introduction of force of the supporting forces, the two support element via an adjusting device adjustable symmetrically to the traction device, so that the pulling device is always aligned concentrically to the bearing housing.

Due to the slidable recording of the support elements with their support feet on the support arms of the support cross member, the device according to the invention can be adapted in a simple manner to different dimensions of axle bodies with their bearing housing and the mounted Radflanschnabe. If the device according to the invention is used for the described pull-out processes, then a pulling device is provided which projects axially through the wheel flange hub and can be brought into train connection therewith. However, instead of the traction device, a pressure device may be provided, so that, for example, an axle shaft can be pressed out of a wheel flange hub of a motor vehicle axle with the device according to the invention. For smaller extraction or pressure forces required for this purpose, for example, a threaded spindle can be provided, which is adjustably received in the support beam via a corresponding adjusting thread.

By the adjusting device, the support elements are also fixed in their respective adjusted position, so that their distance, even with larger pressing forces, especially when the support elements act as a kind of pull hook, can not change substantially. In order for the support elements but with the corresponding Achsbauteil safely engaged. This adjusting device according to the invention is arranged or fastened fixedly in the region of the pulling device on the supporting crosspiece.

That is to say that the pulling device is always aligned symmetrically with respect to the support elements via the support elements that can be simultaneously adjusted along the support crosspiece by the adjusting device. If the device according to the invention for taking off a Radflanschnabe used from the bearing housing of an axle body, the axle body and the bearing housing is received by the simultaneous adjustment of the support elements fitting between them and the drawbar concentrically aligned to Radflanschnabe. Thus, the attachment of the device according to the invention is considerably simplified, for example, on such an axle body or its bearing housing and a Radflanschnabe to be pulled out.

Due to the configuration according to claim 2, an extremely simple and inexpensive construction of the adjusting device is ensured. For this purpose, the adjusting device consists of an adjusting spindle, a fixedly arranged on the support member bearing element and two fixedly mounted on the support member threaded blocks, wherein the adjusting spindle is rotatably mounted and axially fixed in the bearing element and go out from the bearing element two opposing threaded portions, one of which to couple is provided with a threaded block of a support member with a left-hand thread and the other for coupling with the other threaded block of the other support member with a right-hand thread.

For easy and safe operation can be provided according to claim 3, that the adjusting spindle is provided in its one end region with a drive element and in its other end region with a radially expanded stop disc. On the one hand, a simple operation is ensured by the drive element and on the other hand can not be rotated out of the associated threaded blocks through the stopper disc, the two threaded portions.

According to claim 4 it can be provided that the bearing element has a mounting ring, via which the bearing element removably attached between the two support elements on the support cross member is and that on the mounting ring a bearing tongue is arranged with a bearing block in which the adjusting spindle is mounted rotatably and axially fixed via a cylindrical bearing portion. This cylindrical bearing portion of the adjusting spindle can be designed to be radially tapered for axial fixing in the bearing block. Alternatively, the bearing portion may also be radially expanded and engage axially fixed in a corresponding receiving groove of the bearing block and / or the bearing tongue.

For optimal attachment of the support plates of the support legs on a bearing housing of an axle body, a support lip is provided on the support plate of the respective support leg according to claim 5, which is inserted into a space between the wheel flange of a seated in the bearing housing Radflanschnabe and the bearing housing. The design of the support lip is adapted to the shape and dimensions of the respective bearing housing and the wheel bearing both in relation to their wheel bearing towards the supernatant and with respect to their shape such that the best possible power transmission is ensured during operation.

For applications in which the Radflanschnabe is to take off together with the wheel bearing, the wheel bearing towards the supernatant of the support lip is to be chosen so low that during Ausziehvorgang the wheel bearing can not collide with the support lip and thus the support lip is supported only frontally on the bearing housing. This variant can also be used if only the Radflanschnabe is to be pulled out of the wheel bearing. In this case, the support lip may also have a larger projection to the wheel bearing out. If both variants of support elements with support feet with differently shaped support lips are provided, then the support feet or the entire support elements can be exchangeably arranged on the support cross member.

Further, it can be provided according to claim 6, that the support lip has a curved course. This arcuate profile is adapted to the diameter of the bearing housing. In order to be able to apply the support plate to different bearing housings and / or wheel bearings with different diameters, a mean radius of curvature is preferably provided. By this configuration, it is - at least within certain limits - not necessary for different bearing housing support plates provided with different radii of curvature of their support lips. Furthermore, if a support crossbeam with more than two support arms and accordingly also a plurality of support elements is provided, a set of support elements can also be attached to bearing housings which have a considerably larger or smaller radius than such a mean radius of curvature of the support lip, since in this case result in several support surfaces. In this case, the support arms should preferably be arranged with their support elements distributed at regular angular intervals approximately star-shaped.

According to claim 7 can further be provided that the support lip of the support plate has a smaller thickness than the support plate and that their dimensions are chosen such that they can be used in a space between the wheel flange of Radflanschnabe and the bearing housing of the axle body and the bearing housing in the surrounding area of the Wheel bearing is attachable. By this configuration, an extremely high dimensional stability of the entire support foot is achieved.

Due to the configuration according to claim 8, when pulling out a Radflanschnabe and / or a wheel bearing together with the Radflanschnabe an optimal introduction of force into the axle body or its bearing housing is achieved. For this purpose, it is provided that the support plate in its adjoining the support lip, the support traverse axially opposite region an inner Support surface forms, via which the support plate is supported on the radially outer surface of the bearing housing. This power transmission to the lateral surface of the bearing housing is achieved by the radially inwardly extending transversely to the traction device support plates. In an extraction process, radially inwardly acting forces are caused by this inwardly angled shaping of the support elements with their support plates, which forces are transmitted to the bearing housing via the inner support surfaces of the support plates. Next, the precise attachment of the support plates on the bearing housing is facilitated by these inner support surfaces, since the "insertion depth" is limited by the inner support surfaces. Preferably, the inner support surfaces also have an arcuate course with a mean radius of curvature, which is greater than the average radius of curvature of the associated support lip.

For the simplest and also interchangeable if necessary coupling of the support elements with the support cross member is provided according to claim 9, that the support legs are each coupled via two approximately hook-shaped holding elements slidably connected to the respective support arm. The support members may be integrally formed, so that the holding elements together with the support feet form a unit. But it can also be provided that the holding elements are formed as separate components, which are then connected on the one hand by their hook shape displaceable with the respective support arm and on the other hand, for example by a screw connection with the associated support leg.

For slidable coupling with the holding elements according to claim 10, the support arms may each be provided with two laterally projecting, at least approximately over the entire length of the respective support arm extending support webs. By this configuration, the support arms receive an approximately T-shaped Cross-section, so that their flexural rigidity is increased. Next, the support elements in a simple manner by simply pushing interchangeable with the support arms engageable by this configuration.

According to claim 11 can also be provided that the holding elements are designed as separate components and, each support leg via a mounting shaft interchangeable with the associated holding elements in connection. By this configuration, a cost-effective production of differently shaped support legs can be achieved, since for different applications for different sized axle body, bearing housing, wheel bearings and / or Radflanschnaben only the support legs must be provided as different components, but only a pair of holding elements variable for all forms of Support feet is used.

Due to the configuration according to claim 12, on the one hand, a high flexural rigidity of the support cross member is achieved. On the other hand, the screw thread for the threaded adapter can also be equipped with a larger diameter, so that in particular, for example, a hydraulic cylinder as a traction device or as a combined tension / compression device via a corresponding large-sized threaded adapter with the support crossbar can be coupled. As a result, extremely high tensile or compressive forces can be achieved.

For this purpose, it can be provided according to claim 13, that the threaded adapter has a radially expanded axially from the support cross member projecting receiving portion, with which the tension and / or pressure device, in particular in the form of a hydraulic cylinder can be coupled. By such a pulling and / or pressure device extremely high forces in the form of tensile and / or compressive forces can be applied. There are two variants here conceivable of receiving sections. If the device according to the invention is provided exclusively as a pulling device, then such a hydraulic cylinder with a corresponding connection section can also be inserted loosely into the receiving section. During extraction, the hydraulic cylinder is forcibly held by the tensile forces in the receiving section. If the device according to the invention is also to be used for pressing out, for example, a drive shaft from the wheel flange hub, then the hydraulic cylinder can also be screwed to the receiving section, so that pressure forces can also be applied in the opposite direction.

For a further variable use of the device according to the invention, in particular for applications in which "only" lower pressing forces are necessary, can be provided according to claim 14, that the core cylinder is provided in axial extension to the receiving bore axially opposite the threaded adapter with a bore portion with an internal thread, which can be coupled with a pressing device in the form of a pressure or tension spindle. By this embodiment, the weight of the device according to the invention is reduced, so that their handling is facilitated.

By according to claim 15 toward the core cylinder reinforced support arms in particular a higher stability of the device according to the invention is achieved. In this case, it is preferable to choose a cross-sectional profile which is extremely rigid overall.

For this purpose, the support arms according to claim 16 may also have a cross-sectional shape with high bending stiffness, in particular a double-T-shaped cross-section.

For the most precise adjustment of the support elements on the support cross member to a predetermined application-specific distance, the support arms may be provided according to claim 17 with markings over which the position of the supporting arms slidably received supporting elements recognizable symmetrical to the tension and / or pressure device is adjustable.

Fig. 1

einen seitlichen Teilschnitt einer Stütztraverse 1 zusammen mit einem Vertikalschnitt eines Gewindeadapters 2;

Fig. 1a

eine Draufsicht I aus Fig. 1 auf die Stütztraverse;

Fig. 2

eine perspektivische Explosionsdarstellung einer Stellvorrichtung bestehend aus einer Stellspindel, einem Lagerelement sowie zwei Gewindeblöcken;

Fig. 3

eine teilweise Schnittdarstellung II - II aus Fig. 1 eines Stützarmes der Stütztraverse mit einem daran montierten Stützelement;

Fig. 4

eine perspektivische Darstellung eines Ausführungsbeispiels eines Stützfußes des Stützelementes aus Fig. 3;

Fig. 5

eine seitlichen Teilschnitt der Stütztraverse zusammen mit dem montierten Gewindeadapter aus Fig. 1 und zwei auf den jeweiligen Stützstegen der beiden sich gegenüberliegenden Stützarme der Stütztraverse aufgeschobenen Stützelemente aus Fig. 3;

Fig. 6

ein Ausführungsbeispiel einer kompletten erfindungsgemäßen Vorrichtung in ihrem an einem Achskörper angesetzten Zustand im vertikalen Teilschnitt.

βββ With reference to the drawing, the invention is explained in more detail using an exemplary embodiment. It shows:

Fig. 1

a partial side section of a support cross 1 together with a vertical section of a threaded adapter 2;

Fig. 1a

a plan view I of Figure 1 on the support beam.

Fig. 2

an exploded perspective view of an adjusting device consisting of an adjusting spindle, a bearing element and two threaded blocks;

Fig. 3

a partial sectional view II - II of Figure 1 a support arm of the support beam with a support member mounted thereon.

Fig. 4

a perspective view of an embodiment of a support leg of the support member of Fig. 3;

Fig. 5

a partial side section of the support cross member together with the mounted threaded adapter of Figure 1 and two on the respective support webs of the two opposite support arms of the support cross member pushed support elements of Fig. 3.

Fig. 6

An embodiment of a complete device according to the invention in its attached to an axle body state in vertical section.

1 shows a lateral partial section of a support crosspiece 1 together with a vertical section of a threaded adapter 2, as used by way of example for a device 40 according to the invention (FIG. 6).

In the present embodiment of the support beam 1, this has to receive the threaded adapter 2, a central receiving bore 35 with a central thread 3, in which the threaded adapter 2 with a corresponding threaded connector 4 is screwed. Above the threaded neck 4 of the threaded adapter 2 forms a radially enlarged receiving portion 5, which in turn is provided in the present embodiment with an internal thread 6. The threaded adapter 2 is used with its internal thread 6 for coupling the support cross member 1 with a hydraulic pressing device, as shown by way of example for the hydraulic cylinder 41 in Fig. 6.

If the device 40 according to the invention is used only for extracting a wheel hub flange, the receiving section 5 can also be designed without an internal thread, so that a correspondingly configured pressing device can only be inserted into the receiving section (not explicitly shown in the drawing). By this configuration, for example, designed as a hydraulic cylinder pressing device in a simple manner when not in use of the device according to the invention can be removed and can be used for other purposes.

As can be seen further from FIG. 1, a threaded bore section 7 adjoins the threading adapter 3 axially opposite to the threaded adapter 2. This bore portion 7 is provided with an internal thread 8, which serves as an alternative to the hydraulic cylinder 41 of FIG. 6 for the optional use of a tension or pressure spindle in conjunction with the support cross member 1. When using such a tensile or pressure spindle is, then the threaded adapter 2 for coupling the hydraulic cylinder 41 of FIG. 6 omitted.

It can also be seen from FIG. 1 that in the region of the bore section 7 two diametrically opposite threaded bores 70 and 71 are provided. In this threaded holes 70, 71 are two mounting screws 72 and 73 can be screwed, which serve for the fixed attachment of an apparent from Fig. 2 bearing element 74. The bearing element 74 is part of an actuating device 84 shown in FIG. 2 in a perspective exploded view.

Furthermore, it can be seen from FIG. 1 a, which represents a plan view I of FIG. 1, that the supporting crosspiece 1 is radially widened in the region of the central receiving bore 35 and forms a radially widened core cylinder 9, as a result of which sufficient stability is achieved Recording of the threaded adapter 2 in the receiving bore 35 is achieved.

Starting from this core cylinder 9, the support crosspiece 1 forms two diametrically opposed and essentially rectilinearly extending support arms 10 and 11, which are provided for optionally flexible reception of support elements, as will be explained in more detail below. Instead of two such support arms 10 and 11 and three or more support arms may be provided, which are preferably identical and extend radially to the core cylinder 9.

For receiving a support element, in the present embodiment, both support arms 10 and 11 laterally projecting support webs 12, 13 and 14, 15 on. As is further apparent from FIGS. 1 and 1a, the support arms 10 and 11 are reinforced in the region of the core cylinder 9 both in the direction of the longitudinal central axis 16 of the core cylinder 9 and transversely thereto, so that they are particularly suitable for receiving high bending moments. To increase the flexural rigidity of the support arms 10 and 11, it may further be provided that they have a double-T-shaped cross-sectional shape, as can be seen by way of example for the support arm 11 from FIG. 3. But there are also other cross-sectional shapes with high bending stiffness conceivable here.

As can be seen from FIG. 2, the bearing element 74 has a mounting ring 75 for mounting on the support cross-member 1 on the underside, which mounting ring is provided with correspondingly spaced through-holes 77. With these through holes 77 of the mounting ring 75 is aligned with the two threaded bores 70 and 71 on the underside of the support beam 1 coaxial with the bore portion 7 attachable. The bearing element 74 serves for the fixed and rotatable mounting of an adjusting spindle 85 and for this purpose has a vertically downwardly bent position tongue 76. This bearing tongue 76 is provided with two vertically arranged through holes 78, which serve for the fixed mounting of a Lagerbokkes 81. Accordingly, the bearing block 81 is provided to the bearing tongue 76 out with two internal threads 82, in which two mounting screws 79 are screwed. For rotatable and axially fixed mounting of the adjusting spindle 85 of the bearing block 81 is provided with a transverse, approximately semi-cylindrical recess 83.

For the rotatable mounting of the adjusting spindle 85, this has a radially tapered bearing portion 86, which is arranged approximately centrally in the adjusting spindle 85. Instead of such a radially tapered bearing portion 86, the adjusting spindle 85 may also have a radially expanded bearing portion in its central region, which rotatably engages, for example, in a receiving groove of the recess 83 of the bearing block 81 (not shown in the drawing). Starting from this bearing section 86, the adjusting spindle 85 forms two symmetrical to one another arranged and substantially the same axial length having threaded portions 87 and 88. Here, the threaded portion 87 is provided with a left-hand thread and the threaded portion 88 with a right-hand thread. The adjusting spindle 85, with its two threaded sections 87 and 88, can each be brought into engagement with a threaded block 95 or 96, which are each provided with a corresponding adjusting thread 97 or 98 for this purpose. Due to the formation of the threaded portions 87, 88 and the adjusting thread 97, 98 as left or right thread is thus causes an adjustment movement of the two threaded blocks 95 and 96 in the opposite direction upon rotation of the adjusting spindle 85, so that their distance by the rotation of the adjusting spindle 85 is changeable and fixable. Each of the threaded blocks 95, 96 is provided at the rear with two mounting threads 99 and 100, respectively, via which the respective threaded block 95 or 96 can be fixedly mounted on a support element 17 shown by way of example in FIG.

Fig. 3 shows a partial section II - II of the support arm 11 of FIG. 1, on which the support member 17 is adjustably mounted. Of these support members 17, two pieces are provided, which are arranged mutually adjustable on the two support arms 10 and 11 of the support beam 1. The support members 17 are substantially identical, so that the description of FIG. 3 on both support members 17, as shown in Fig. 5 are to be read.

As shown for the one support element 17 in Fig. 3, this consists of two identically shaped guide hooks 18, which are mirror-symmetrically to each other with the two support webs 14 and 15 of the support arm 11 of the support cross 1 in engagement. These support hooks 18 are displaceable along the two support webs 14 and 15. For this purpose, the guide hooks 18 in the region of the support webs 14 and 15 each form-fit with the support webs 14 and 15 engageable, U-shaped holding member 19. This mounting element 19 is followed in each case by a mounting lug 20, which serves for the interchangeable attachment of a support foot 21.

Instead of the support webs 12, 13 and 14, 15, the support arms 10 and 11 may also be provided with corresponding engagement grooves, in which the guide hooks 18 engage positively and displaceably. Also, the support members 17 may be formed as a one-piece unit.

In the present multi-part embodiment of the support members 17, the respective support leg 21 for coupling with the two guide hooks 18 has a mounting shank 22, which is accommodated between the two mounting tabs 20 of the two guide hooks 18. For fastening the mounting shank 22 between the two mounting tabs 20, both the mounting tabs 20 and the mounting shank 22 corresponding through holes 23, 24 and 25, 26 on.

On each of the support elements 17, one of the threaded blocks 95 and 96 is fixedly mounted, as shown in FIG. 3 by way of example for the threaded block 95. It can also be seen from FIG. 3 that the adjusting spindle 85 engages with the threaded block 95. Further, it is at least suggestively apparent from Fig. 3 that the adjusting spindle 85 is rotatably mounted on the bearing block 81 on the bearing tongue 75 of the bearing element 74. By means of corresponding retaining screws 27 in combination with the respective associated threaded block 95, in which these retaining screws 27 are screwed, the support leg 21 is fixed and removably held between the two mounting tabs 20.

Fig. 4 shows an example of a perspective view of an embodiment of such a support leg 21. It can be seen that the mounting shaft 22 of the support leg 21 is an approximately has rectangular cross section and the through holes 25 and 26 are arranged in its upper end region. In the lower end region of this mounting shank 22, an approximately perpendicular to the mounting shank 22 extending support plate 29 is provided. This support plate 29 is formed in the region of its free end 30 in width B wider than the width b of the mounting shaft 22nd

The support plate 29 is used during operation for axial support on an axle component. In particular, for support in the end-side, radially outer region surrounding a wheel bearing arranged in a bearing housing of an axle component, the support plate 29 is provided with a protruding support lip 31 in the upper edge region of its free end 30. As can be seen from Fig. 4, the thickness d of the support lip 31 is formed smaller than the thickness D of the support plate 29. The thickness d of the support lip 31 is the axial size of a gap 61 (Fig. 6) between the wheel flange 55 and the Bearing housing 50 adapted so that the support lip 31 is securely inserted into this space 61 and can be supported in the radially outer region of the wheel bearing 52 frontally on the bearing housing 50.

In this case, the projection U of the support lip 31 (FIG. 4) directed radially inwardly on a bearing housing 50 in the attached state is selected so that the support lip 31 does not engage with the recess 31 when the inner support surface 32 located below the support lip 31 abuts against the bearing housing 50 Wheel bearing 52 can collide. This inner support surface 32 of the support plate 29 is used during the extraction process for additional support of the support plate 29 on the bearing housing 50 (FIG. 6), as will be explained in more detail later. Next, the "insertion depth" of the support lip 31 is limited by this inner support surface 32, so that it is securely attachable to a bearing housing in the desired position.

Due to the inventive design of the support plate 29 with its support lip 31 and the support surface 32 and the larger thickness D of the support plate 29, an extremely high rigidity of the support foot 21 is achieved, so that high forces are transferable.

Next, the underside of the support plate 29 can serve as a support surface 33. If the support foot 21 with the support lip 31 of its support plate 29 is not attachable to the bearing housing 50 (FIG. 6) in the surrounding area of the wheel bearing 52, since the space 61 between the wheel flange 55 and the bearing housing 50 is too small, the bottom side of the support plate 29 serves as a support surface 33 and can be supported axially on radially to the bearing housing projecting axle components. Due to this special construction of the entire support elements 17 with their support legs 21, which with respect to the receiving bore 35 of the support cross 1 symmetrically to each other on both support arms 10 and 11 can be arranged, a variable insert for pulling, in particular Radflanschnaben a motor vehicle axle is possible because the support elements 17th can be adjusted to the respective dimensions and the spatial conditions on an axle body or its bearing housing.

5 shows the support cross member 1 together with the mounted threaded adapter 2 and two support elements 17 pushed onto the respective support webs 12 and 13 or 14 and 15 of the two opposing support arms 10 and 11.

From Fig. 5 it can be seen that the two support plates 29 of the opposing support members 17 are aligned in the direction of each other. It can also be seen that the lying below the support lips 31, inner support surfaces 32 extend from top to bottom to the lower support surface 33 obliquely outwards. Such an inclined design of these support surfaces 32 serves to adapt to the corresponding shape of a bearing housing to which the support elements 17 apply are. Furthermore, it is also clear from FIG. 5 that for different bearing housings with different dimensioning in the simplest manner differently designed support elements 17, in particular with differently configured support feet 21, can be used. Also by this configuration, the variability of the construction according to the invention is further increased. Preferably, however, support members 17 are provided with support plates 29, the support lips 31 and the inner support surface 32 each have an arcuate course with a mean radius of curvature, so that the device of the invention with only one set of support members 17 to axle bodies or bearing housings with different dimensions can be attached is.

In order to be able to adjust the two support elements 17 to the respective support arm 10 and 11 at the same distance to the longitudinal central axis 16 of the core cylinder 9 in use, the adjusting device 84 is provided. It can be seen that the adjusting spindle 85 with the two threaded blocks 95, 96 (shown in phantom) is engaged. The bearing element 74 is mounted by means of the two mounting screws 72 and 73 on the underside fixed to the support beam 1. The adjusting spindle 85 is in turn rotatably and axially fixed with the bearing element 74 in engagement. By turning the adjusting spindle 85, for example via its driving hexagon 92, the two threaded blocks 95 and 96 and thus the supporting elements 17 fixedly connected thereto are now movable in the opposite direction towards or away from one another. Thus, the distance of the support elements 17 is variable and always symmetrical to the longitudinal center axis 16 of the core cylinder 9 adjustable and the respectively set distance by the actuator 84 also fixed.

In order to be able to adjust the distance required in a simpler manner depending on the application, it is possible, as shown by way of example in FIG. 5, in the area of the respective support webs 13 and 15, respectively in each case a bar marking 34 may be provided, which are provided with identical markings, such as v, w, x, y, z. As a result, a "coating" of the two support elements 17 is reliably excluded because the user always receives the necessary orientation for the adjustment of the required distance of the two support elements 17 via the bar marking 34.

Further, FIG. 6 shows the complete apparatus 40 in use. It can be seen that in the threaded adapter 2, a hydraulic cylinder 41 is screwed, which is provided with a 42 adjustable in the direction of the double arrow pull rod 43. This pull rod 43 has an external thread 44, with the upper end portion 45 of the pull rod 43 is axially adjustable in a hydraulic piston 46 of the hydraulic cylinder 41 is screwed. On the lower end portion 47 of the external thread 44, a pull nut 48 is screwed onto the pull rod 43.

In the partial sectional view of FIG. 6, the entire device 40 is attached to an axle body 49 of a motor vehicle axle. This axle body 49 has a central bearing housing 50, in which a Radflanschnabe 51 is rotatably supported via a corresponding wheel bearing 52. The Radflanschnabe 51 is secured in the present embodiment by means of a retaining ring 53 fixed in the wheel bearing 52. Such axial fixing of Radflanschnabe 51 in the wheel bearing 52 may also be accomplished by other means. Further, it can be seen that between the wheel flange 55 and the adjacent bearing housing 50, a gap 61 is present.

In order to be able to remove the Radflanschnabe 51 together with the wheel bearing 52 in the direction of arrow 54 from the bearing housing 50, the device 40 according to the invention is provided.

For this purpose, the two support plates 29 of the two support members 17 with their support lips 31 in the space between the wheel flange 55 and the bearing housing 50 laterally, radially inserted from the outside by corresponding adjustment of the adjusting spindle 85. The support lips 31 are supported on the upper side on the bearing housing 50 in the surrounding area outside of the wheel bearing 52. Furthermore, it can be seen from FIG. 6 that, in this fitted state, a bearing of the inner support surfaces 32 of the support plate 29 also takes place on the outer lateral surface 56 of the bearing housing 50. Here, the support lips 31 as well as the support surfaces 32 of the support plates 29 for support on the bearing housing 50. The inner support surfaces 32 of the support plates 29 can be used when attaching to the bearing housing 50 as a kind of "insertion limit", so that the device 40 securely on the bearing housing 50th can be attached.

Due to the L-shaped design of the support legs 21, a force is achieved in a force introduction into the support elements 17 against the arrow 54, so that the support plates 29 are pressed radially inwardly in the direction of arrows 59, 60 against the outer surface 56 of the bearing housing 50 , In that regard, here is a double support of the support members 17 on the bearing housing 50, provided that the adjusting spindle 85 is set to the appropriate distance. Due to the always symmetrical adjustment of the two support elements 17 to the longitudinal center axis 16 of the hydraulic cylinder 41 is always a concentric force on the Radflanschnabe 58 and a uniform support of the device 40 via its two support members 17 on the bearing housing 50 guaranteed.

Furthermore, it can be seen from FIG. 6 that the drawbar 43 of the hydraulic cylinder 41 completely projects through the bearing hub 58 of the wheel flange hub 51 and the draw nut 48 screwed onto the pull rod 43 in the lower end region 47 is axially supported on the wheel flange hub 51. For this purpose, the tension nut 48 to the bearing hub 58th towards a conically shaped, radially expanded support web 57.

It is easy to imagine that upon activation of the hydraulic cylinder 41 whose hydraulic piston 46 is pulled in the direction of arrow 54 upwards. By this adjusting movement, the Radflanschnabe 51 is simultaneously pulled out together with the wheel bearing 52 in the same direction. Due to the axial fixing of the Radflanschnabe 51 via the retaining ring 53 in the wheel bearing 52, consequently, the wheel bearing 52 is inevitably pulled out of the bearing housing 50 together with the Radflanschnabe 51.

In other axle designs in which the Radflanschnabe 51 is not axially fixed in the wheel bearing 52 via a circlip or the like, can also be provided that with the device 40 according to the invention only the Radflanschnabe 51 is pulled out of the wheel bearing 52. Also, the device according to the invention can be used after removing the Radflanschnabe 51 for removing the still remaining in the bearing housing 50 wheel bearing 52 by a corresponding pressure plate is placed between the lock nut 48 and the wheel bearing 52, which is supported on the outer bearing of the wheel bearing (in the Drawing not explicitly shown).

It is also easy to imagine that with larger or smaller dimensions of the axle 49 with its bearing eye 50, the two support members 17 are adjustable by actuation of the adjusting spindle 85 on the two support arms 10 and 11 variable to different dimensions. As a result, an extremely variably deployable device for pulling out a wheel flange hub, as shown by way of example in FIG. 6, is made available by the configuration according to the invention of the device 40. Other advantages of the device according to the invention are a high cost savings, since not here, as in the state of Technique, a separate support plate with a correspondingly adapted U-shaped recess must be used for each bearing housing diameter.

The support elements 17 are pressed radially inwardly in the direction of the arrows 59 and 60 due to the angled shape of their support legs 21 with their support plates 29 during the extraction process, whereby an additional stabilization of the device 40 is achieved during use.

Furthermore, due to the threaded adapter 2 and the additionally provided internal thread 8, the device can be used variably both with a hydraulic cylinder 41 and with a simple pulling spindle. This optional use is essentially dependent on the required tensile forces for pulling a Radflanschnabe or a wheel bearing. By a corresponding adjustment of the radius of the support legs 21 in the region of their support lips 31, these support legs 21 are also used in wide ranges of different diameters of bearing housings.

Furthermore, the device 40 according to the invention can also be used to press out a drive shaft located in the bearing hub 58, which is not explicitly shown in the drawing. For the embodiment of FIG. 6, in which the hydraulic cylinder 41 is designed as a cylinder acting unilaterally in the direction of the arrow 54, this hydraulic cylinder 41 is rotated by 180 ° and brought into engagement with the support crosspiece 1 via a second threaded adapter. The pull rod 43 then acts as a push rod.

After this push rod has been delivered axially so far that it is in contact with the drive shaft arranged in the bearing hub, the hydraulic cylinder 41 is activated. In its relation to that shown in Fig. 6 rotated by 180 ° position is now on the drive shaft against the arrow 54 pressure exerted. In this case, the device 40 according to the invention is supported with the support plates 29 of its support members 17 axially on the "back" of the wheel flange 55, so that the drive shaft is pressed securely out of the bearing hub 58. Due to the adjusting spindle 85, the two support elements 17 can not be pressed radially apart during this ejection, even with larger forces, so that the device 40 remains securely anchored to the Radflansch 51 with its push rod coaxial with the wheel hub flange 51 or to be expressed drive shaft.

The device 40 according to the invention with its adjusting device 84 can thus be used in a highly variable manner, on the one hand, in the manner shown and, on the other hand, can also be used extremely variably as a conventional puller. It is always a concentric preparation of the entire device with its pressing device with respect to a bearing housing, a pressed-out drive shaft or other components on the actuator 84 and the two support members 17 guaranteed.

Claims (17)

Device (40) for disassembling a Radflanschnabe (51), rotatably and axially fixedly received via a wheel bearing (52) in a bearing housing (50) of an axle body (49), consisting of a supporting device having a support crosspiece (1) over which the device (40) axially supported on the bearing housing (50) and a central pulling device (41, 43) projecting through the wheel flange hub (51) and which can be brought into train connection with the wheel flange hub (51),
characterized,
in that the support crosspiece (1) forms at least two support arms (10, 11) extending radially relative to the drawbar (41), on which displaceable support elements (17) are arranged relative to the support crossmember (1), each having a support leg (21) which faces the axial support on the bearing housing (50) is provided with a transverse to the pulling direction (arrow 54) extending support plate (29) and,
in that the two support elements (17) which are diametrically opposed with respect to the pulling device (41, 43) are adjustable symmetrically with respect to the pulling device (41, 43) via an adjusting device (84), and
in that the adjusting device (84) is arranged fixedly in the region of the pulling device (41, 43) on the supporting crossbeam (1). Device according to claim 1, characterized in that the adjusting device (84) comprises an adjusting spindle (85), a bearing element (74) fixedly arranged on the supporting cross member (1) and two threaded blocks (95, 96) fixedly arranged on the respective supporting element (17). exists and,
in that the adjusting spindle (85) is rotatably and axially fixed in the bearing element (74) and forms two opposing threaded sections (87, 88) starting from the bearing element (74), one of which for coupling to the one threaded block (95) of the one supporting element (17) is provided with a left-hand thread and the other for coupling with the other threaded block (96) of the other support element (17) with a right-hand thread. Apparatus according to claim 2, characterized in that the adjusting spindle (85) is provided in its one end region with a drive element (92) and in its other end region with a radially expanded stop disc (90). Apparatus according to claim 2 or 3, characterized in that the bearing element (74) has a mounting ring (75) via which the bearing element (74) between the two support elements (17) is removably attached to the support beam and,
in that a bearing tongue (76) with a bearing block (81) is arranged on the mounting ring (75), in which the adjusting spindle (85) is rotatably and axially fixed via a cylindrical bearing section (6). Device according to one of claims 1 to 4, characterized in that the support plate (29) of the support foot (21) for attachment to the bearing housing (50) has a bearing housing (50) projecting support lip (31). Apparatus according to claim 5, characterized in that the support lip (31) has a curved course. Apparatus according to claim 5 or 6, characterized in that the support lip (31) of the support plate (29) has a smaller thickness ( d ) than the support plate (29) and that their dimensions are chosen such that this in a space (61) insertable between the wheel flange (55) of the Radflanschnabe (51) and the bearing housing (50) of the axle body (49) and on the bearing housing (50) in the vicinity of the wheel bearing (52) can be attached. Apparatus according to claim 5, 6 or 7, characterized in that the support plate (29) in its adjoining the support lip (31), the support cross member (1) axially opposite region forms an inner support surface (32) over which the support plate (29) on the radially outer circumferential surface (56) of the bearing housing (50) is supported. Device according to one of claims 5 to 8, characterized in that the support feet (21) in each case via two approximately hook-shaped holding elements (19) are slidably coupled to the respective support arm (10 or 11). Apparatus according to claim 9, characterized in that the support arms (10, 11) for displaceable coupling with the holding elements (19) each with two laterally projecting, at least approximately over the entire length of the respective support arm (10 or 11) extending support webs ( 12, 13 and 14, 15) are provided. Apparatus according to claim 9 or 10, characterized in that the holding elements (19) are designed as separate components and that each support leg (21) via a mounting shank (22) replaceable with the associated holding elements (19) is in communication. Device according to one of claims 1 to 11, characterized in that the support cross member (1) in the connecting region of its two support arms (10, 11) forms a central core cylinder (9), which with a screw thread (3) for receiving a threaded adapter (2). is provided. Apparatus according to claim 12, characterized in that the threaded adapter (2) has a radially expanded axially from the support cross member (1) projecting receiving portion (5), with which the pulling device, in particular in the form of a hydraulic cylinder (41) can be coupled. Apparatus according to claim 12 or 13, characterized in that the core cylinder (9) in axial extension to the receiving bore (35) the threaded adapter (2) axially opposite to a bore portion (7) is provided with an internal thread (8), which with a pulling device in the form of a compression or tension spindle can be coupled. Device according to one of claims 1 to 14, characterized in that the support arms (10, 11) are reinforced towards the core cylinder (9). Device according to one of claims 1 to 15, characterized in that the support arms (10, 11) have a cross-sectional shape with high bending stiffness in particular a double-T-shaped cross-section. Device according to one of claims 1 to 16, characterized in that the support arms (10, 11) are provided with markings, via which the position of the on the support arms (10, 11) slidably received supporting elements (17) recognizable symmetrically to the pulling device (41) is adjustable.

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