DE2433928A1 - Combined radial and axial bearing - has radial bearing with two or more axial bearing plates that locate in recesses - Google Patents

Abstract

The bearing allows for alternation in the peripheral surface of the radial bearing surface relative to the axial bearing surface. The radial bearing has one or two recesses out in the bearing surface. The advantage of the design is that the radial bearing can be bedded in without adversely affecting the axial part of the bearing. The radial bearing (1) has two or moer adapted axial bearing segments (2, 3, 4, 5) which locate in recesses in the radial bearing. The inner edges of the axial segments have flanges (9, 10) which fit in the recesses. There are a series of combinations of the design with the radial bearing being cylindrical or semicylindrical and the axial segments being semi-circular, a third of a circle or quadrant shaped.

Description

Combined radial-axial sliding bearing The invention relates to Combined radial-axial plain bearing that changes the circumferential shape of the radial plain bearing part to the axial plain bearing part, with the radial plain bearing part on one or two Has front edges recesses.

There are combined radial-axial sliding bearings known in which on the front edges of an inner ring, i.e. a closed, sleeve-shaped radial plain bearing part Axial pressure rings closed in the form of a circular ring, i.e. axial bearing parts, if necessary via intermediate ones elastic links, are attached. The ring-shaped closed axial plain bearing parts tend to - if either they are not flawless from the start have been machined flat or deformed during installation - excessively in some areas to be stressed and therefore only a relatively short service life.

There are also sliding bearing halves of the type described above are known, in which half-ring segments in the recesses on the end faces of the radial plain bearing half are used (DT-OS 2 140 845). When installing these plain bearing halves with Half-ring segments are equipped, the mechanical interlocking must inevitably yield so that the radial plain bearing half is the housing bore and at the same time the half-ring segment can adapt to the contact surface. These known plain bearing halves have the disadvantage that - if the half-ring segment is not perfectly flat or when installing due to the deformation explained above, the plain bearing half over its Attachment with this loses its original flawless planar training - In the case of unfavorable installation conditions, only at two or three points in the axial direction the axial forces are absorbed. This has the consequence that the thrust washers or half-ring segments are excessively loaded and thus only a short service life exhibit.

The object of the invention is therefore to provide a combined radial-axial sliding bearing to create the radial plain bearing part without any disadvantageous consequence for the axial plain bearing parts can be deformed for installation in the housing bore and its axial plain bearing parts their Formation and attachment for optimal distribution of the axial forces during installation do not lose the bearing in the housing bore.

This is achieved according to the invention in that the radial sliding bearing part on at least one end edge with two or more adapted axial plain bearing segments in the desired shape and number by means of the recesses of the radial sliding bearing part gripping tabs formed on the inner edge of the axial plain bearing segments and captively connected by means of radial or tangential, projecting stops is.

In contrast to the well-known plain bearing hardnesses with end flanges each half-ring flange to be formed from several axial sliding bearing segments, preferably two quarter circle segments, formed. The axial plain bearing segments can in the frame of the invention for the formation of lubrication pockets opposite the peripheral area occupied by them reset, i.e. set to gap against each other.

By dividing the originally semicircular axial plain bearing parts in several axial plain bearing segments, for example quarter circle segments, can at the same time, optimum material utilization without the use of expensive tools achieve.

In the following, exemplary embodiments of the Invention explained in more detail. The figures show: FIG. 1 an exploded radial / axial plain bearing half according to the invention in a perspective view; 2 shows a combined radial / axial plain bearing half according to FIG. 1 assembled in a perspective view; 3 shows a section along the line III-III of FIGS. 2 and 7; 4 to 6 punching arrangements of axial plain bearing segments according to the invention; 7 shows a sleeve-shaped combined radial-axial sliding bearing according to the invention in a perspective view and FIG. 8 a compared to FIG. 7 somewhat modified radial axial sliding bearing in an exploded perspective Depiction.

As from the exploded perspective view of the 1, the assembly of the radial / axial plain bearing halves shown there takes place from the radial plain bearing half 1 and the one on the end faces of the radial plain bearing half 1 to be attached axial plain bearing segments 2, 3, 4 and 5. The radial plain bearing half 1 is provided on the end faces with recesses 6, 7, 8, around those on the segments 2, 3, 4, 5 formed tabs 9, 10 to be able to accommodate.

As can be seen from the assembly of the radial axial plain bearing half in Fig. 2, the tabs 9 of the segments 2, 3, 4, 5 close with the separating surfaces 11, 12 of the radial sliding bearing half 1 flush, while between the tabs 10, the are inserted into the recess 8, a gap or a lubrication pocket 13 remains.

Due to the arrangement and independent attachment of the axial plain bearing segments A multiple of pressure points is achieved on the radial plain bearing half, umd the pressure points are therefore exposed to less stress in places. this leads to in turn to an increase in operational safety and a reduction in wear and tear and thus an increased service life for the combined radial-axial plain bearing.

The attachment of the axial plain bearing segments 2, 3, 4, 5 to the radial plain bearing half 1 takes place in a manner known per se (cf. DT-OS 2 140 845) through radial outwardly or tangentially protruding stops to the tabs 9, 10 of the axial sliding bearing segments 2, 3, 4, 5, which are mechanically chamfered or rounded beforehand.

The tabs 9, 10 of the segment are - as the section in FIG. 3 shows - Provided with radian 14, 15, which in the radius 16 of the respective end face of the Skip radial plain bearing half 1.

This measure avoids any interfering protrusions.

By separating the known radial axial plain bearings as Half rings executed axial bearing parts in two or more axial plain bearing segments a high degree of utilization of the respective material strip can be achieved in an advantageous manner - As can be seen from Fig. 4, 5 and 6 - achieve.

There are punching arrangements known, (DT-Gbm 7 244 597, Dt-Gbm 7 311 694), which has a higher degree of utilization compared to the known manufacturing processes enable the strip of material.

However, even with these arrangements there is waste or scrap still big.

In the punching arrangement shown in Fig. 4, the quarter circle segments punched out of the material strip 20 without nesting. Through the through achieved close punching arrangement, good material utilization is achieved.

Fig. 5 shows that the segments 2, 3, 4, 5 are even closer to one another can place, whereby non-essential parts, i.e. not loaded parts, on the outer circumference be cut away.

In the punching arrangement shown in FIG. 6, the outer ones fall Corner areas - indicated by the dashed line 21 - the Quarter circle segments path. This allows the use of a narrower strip of material than in the example 5 to FIG.

Basically, however, the quarter circle segments alone A better material utilization compared to the conventional semicircular segments achieved.

7 and 8 show two embodiments in which the invention is applied to combined radial-axial plain bearings, their radial plain bearing part is designed as a socket, for example a rolled socket 21. In the example of the Fig. 7 is on the two front edges of this sleeve-shaped radial sliding bearing part 21 each an axial sliding bearing part is attached, which consists of two semicircular axial sliding bearing segments 22, 23 is formed. The partial surfaces 25 of these axial sliding bearing segments 22, 23 are offset by 600 on the circumference of the warehouse; the gap 27 of the rolled radial plain bearing bush 21 closest partial surfaces 25 of the radial plain bearing parts are 600 opposite the gap 27 is offset. Between the opposing partial surfaces 25 of the semicircular Axial plain bearing segments 22, 23 are left gaps 26 as lubrication pockets.

In the case of the bearing according to FIG. 8, the radial plain bearing bushing is attached to each end edge 21 four quarter-circle axial plain bearing segments 24 attached. The arrangement of this Quarter-circle thrust bearing segments 24 should be taken so that in each Case of the existing in the radial plain bearing gap 27 of quarter-circle axial plain bearing segments 24 is assaulted.

All other features can be taken from the bearing according to FIG. 7 or the radial axial plain bearing half 1 and 2 are taken over.

- patent claims -

Claims (8)

Claims (9) Combined radial-axial sliding bearing, the one Allows change of the circumferential shape of the radial plain bearing part to the axial plain bearing part, wherein the radial sliding bearing part has recesses on one or two end edges, characterized in that the radial sliding bearing part (1, 21) on at least one Front edge with two or more adapted axial plain bearing segments (2, 3, 4, 5; 22, 23, 24) in the desired shape and number by means of the recesses of the radial sliding bearing part (1, 21) gripping, on the inner edge of the axial plain bearing segments (2, 3, 4, 5; 22, 23, 24) formed tabs (9, 10; 29) and by means of radial or tangential, projecting stops is captively connected. 2.) Radial axial sliding bearing according to claim 1, characterized in that that the radial sliding bearing part is designed as a radial sliding bearing half (1) and the axial plain bearing segments (2, 3, 4, 5) end in the area of the partial surface. 3.) Radial axial sliding bearing according to claim 2, characterized in that that the side edges of the radial plain bearing halves (1) with three recesses (6, 7, 8) for receiving the ones arranged on the axial plain bearing segments (2, 3, 4, 5) Tabs (9, 10) are formed and the central recess (8) for receiving two of these tabs (10) is provided. 4.) Radial axial sliding bearing according to claim 2 or 3, characterized in that that the axial sliding bearing segments (2, 3, 4, 5) are designed in the shape of a quarter circle. 5.) Radial axial slide bearing according to claim 1, characterized in that that the radial sliding bearing part (21) is designed as a sleeve-shaped radial sliding bearing is and on at least one end edge with the circumference of the radial sliding bearing part at least partially occupying axial sliding bearing segments (22, 23, 24) is occupied. 6.) Radial axial plain bearing according to claim 5, characterized in that that the axial plain bearing segments (22, 23, 24) are semicircular, third-circular or quarter-circle. 7.) Radial axial sliding bearing according to one of claims 1 to 6, characterized characterized in that the axial sliding bearing segments (2, 3, 4, 5; 22, 23, 24) to their Inside edge with a rounding (15) are provided, which on the inside edge itself merges into the molded tabs (9, 10; 29). 8.) Radial axial sliding bearing according to one of claims 1 to 7, characterized characterized in that the axial sliding bearing segments (2, 3, 4, 5; 22, 23, 24) to form of mutual spacing columns (13) opposite the circumferential area to be occupied by them shortened and in the case of radial axial plain bearing halves also on the partial surface the radial plain bearing half are withdrawn.