DE102007048669A1 - Bearing arrangement for receiving radial and axial loads - Google Patents

Abstract

The invention relates to a bearing assembly for receiving radial and axial loads, consisting of a radial bearing and a double-row, resilient in both directions thrust bearing. The bearing arrangement is characterized in that the radial bearing (1) is concentrically enclosed by a receiving bore (3) of the thrust bearing (2), wherein the axial extent of the radial bearing (1) substantially corresponds to that of the thrust bearing (2) and two by a Slit (33) spaced apart shafts (16, 17) are accommodated, wherein at least one of the shafts (16) from the radial bearing (1) via a shaft journal (20) is received and both shafts (16, 17) via a shaft collar (18, 19) are supported on one side of the axial bearing (2).

Description

Field of the invention

The The invention relates to a bearing assembly for receiving radial and axial loads, consisting of a radial bearing and a double-row, axial load bearing in both directions.

Background of the invention

so Generically designed bearing arrangements for Recording radial and axial loads have long been known. They serve to shafts, screws or the like both radially to store, as well as simultaneously axially in both directions exactly to position and to hold back into their installation position without play.

In the DE 27 38 287 A Such a generic trained bearing assembly is described above. This consists of an inner ring and an associated outer ring, between which rolling on corresponding raceways rolling elements that absorb radial forces. For receiving axial forces rolling elements are arranged on both sides of the end faces of the outer ring, the raceway are formed on the one hand by the end faces of the outer ring and on the other hand by a respective running disk.

Other generic trained combined bearing assemblies go from the DE 36 20 102 A1 . DE 69 46 098 U . DE 100 10 075 A1 and the DE 11 2004 002 814 T5 out.

adversely It is that such bearing arrangements of individual components are composed, but not to a captive assembly are summarized. Another disadvantage is justified by that such generically trained bearing assemblies build quite wide in the axial direction. Finally is also a disadvantage that such composite combined bearing arrangements are designed for receiving only one shaft.

Summary of the invention

outgoing from the disadvantages of the known prior art is the invention Therefore, the object to provide a combined bearing assembly, the one hand is suitable for receiving two waves and the on the other hand is designed as a captive assembly.

According to the invention this object according to the characterizing part of claim 1 in conjunction solved with the preamble thereof, that the radial bearing concentrically captive by a receiving bore of the thrust bearing is enclosed, wherein the axial extent of the radial bearing substantially which corresponds to the thrust bearing and two by a gap from each other spaced waves are received, wherein at least one of Shafts from the radial bearing taken over a shaft journal is and both waves over a shaft collar to one each Side of the thrust bearing are supported.

Of the Advantage of the bearing assembly according to the invention is in that in this way two waves can be received, due to their radial and axial support independently can rotate from each other. This affects both the speed as well as the direction of rotation. Another advantage is that the bearing assembly requires a small axial space, is designed as a unit captive and therefore on the way to the end customer can not disintegrate into their individual parts. The end customer has the advantage that such a captive Easy to assemble unit. Also lets Such a bearing arrangement in a simple way every application Customize by both the radial and the thrust bearings designed accordingly and then to a unit get connected.

It has proved to be advantageous in that the thrust bearing is ever a U-shaped trained profile which in the axial direction to the outside are open and with their bottoms together, where each a radially outer leg with a housing and each a radially inner leg rotationally fixed to the radial bearing are connected. Such a U-shaped profile leaves in a simple way in different proportions produced by a non-cutting shaping process.

Around a twisting of the U-shaped profiles in the circumferential direction to avoid, these are shaped over their backs. or cohesively connected to one another.

To a further additional feature is provided that the radial bearing as a rolling bearing or as a plain bearing is trained. Both variants are equal next to each other and depend on the specific application.

If only one shaft supported radially over its shaft journal it has proved advantageous for another that the radial bearing as a non-cutting shaped needle sleeve is formed, whose guided in a cage Needles on the one hand on a through the needle sleeves formed outer races and on the other hand on a through Roll the inner raceways formed on the pins of a shaft.

On the other hand, if both shafts are radially offset are supported, is provided according to another feature that the radial bearing is formed by two axially spaced apart non-cutting needle sleeves, run in a cage bearing needles on the one hand on formed by the needle sleeves outer raceways and on the other hand formed on the pins of the shafts inner raceways ,

To a further feature is provided that in the same way as in radial bearings also the thrust bearing as a rolling bearing or formed as a sliding bearing, wherein in cages Roll guided cylindrical rollers on leaf conveyors, on the one hand from the bottoms of the profiles and on the other hand from running wheels are formed or where incorporated in the profiles sliding washers are.

To an additional other feature is provided that on the bottom of the profiles depending on a Ronde is arranged as Track for the thrust bearing is used. This variant has the advantage that the U-shaped profiles no additional heat treatment to increase the Hardiness must be subjected.

Also is provided according to further features of the invention that the profiles are provided with holding means which form-locking the pulleys of the thrust bearing embrace. Such holding means can, for example evenly spaced apart in the circumferential direction Hold tabs or a snap ring.

After all is provided according to a last feature of the invention that the Profiles are taken from a non-cutting shaped sleeve, whose radially inwardly directed leg this form-fitting embrace. This way you can easily accomplish a captive unit.

Further Features of the invention will become apparent from the following description and from the drawings, in which embodiments of the Invention are shown in simplified form.

Brief description of the drawings

It demonstrate:

1 an axial section through a bearing assembly according to the invention including shafts and housing,

2 and 3 an axial section through different bearing variants including shafts, but without housing,

4 . 5 . 6 . 7 and 8th an axial section through differently designed bearing variants without shafts and housing.

Detailed description the drawings

In the 1 shown bearing assembly consists of with 1 designated radial bearings and with 2 designated thrust bearing. Here is the radial bearing 1 from the central receiving hole 3 of the thrust bearing 2 recorded, both bearings 1 . 2 rotatably arranged one inside the other, for example by a press fit. As can further be seen, have radial bearings 1 and thrust bearings 2 approximately the same axial length expansion. The radial bearing 1 consists of the unscrewed needle sleeve 4 on both sides with radially inward ribs 5 is provided. The needle sleeve 4 gets through in the cage 6 guided storage needles 7 completed.

The thrust bearing 2 consists of the two U-shaped profiles 8th , which are open in the axial direction to the outside. Each profile has the floor 9 up and going through the two thighs 10 . 11 continued, which are aligned in the axial direction. The profiles 8th are with their radially outer thighs 10 with the housing 22 connected. For thrust bearing 2 continue to include the two pulleys 12 that of evenly circumferentially spaced apart retaining lugs 13 are positively embraced, so that the pulleys 12 on the profiles 8th are fixed. Finally belong to the thrust bearing 2 still in cages 14 guided cylindrical rolling elements 15 , Which are arranged spaced apart in the axial direction and roll on unspecified raceways. These tracks are on the one hand from the bottoms 9 the profiles 8th and on the other hand of the two pulleys 12 posed. As can be further seen, the two shafts belong to the bearing arrangement 16 . 17 both the covenant 18 . 19 exhibit. The wave 16 is with her thong 20 from the needle sleeve 4 and thus provides the inner raceway for the bearing needles 7 , Both waves 16 . 17 are in the axial direction over their waistband 18 . 19 on the pulleys 12 of the thrust bearing 2 supported. In this way it is possible that through the gap 33 axially spaced apart shafts 16 . 17 around its axis 21 can rotate at different speeds and with different directions of rotation.

In the 2 shown bearing arrangement differs from the in 1 through two changes:
As you can see, not only is the shaft 16 over her cones 20 from the radial bearing 1 but also the wave 17 with her thong 23 , For this it is necessary that in the receiving bore 3 of the thrust bearing 2 two in the axial direction juxtaposed non-cutting shaped needle sleeves 4 is are ordered, so their storage needles 7 roll on the inner raceways, those of the cones 20 . 23 the waves 16 . 17 are placed. In addition, the thrust bearing 2 with round blanks 24 equipped on the floors 9 the U-shaped profiles 8th are hung up. This makes it possible for the profiles 8th no heat treatment must be subjected to increase in hardness, which has a favorable effect on the crimping.

In the 3 shown bearing arrangement differs from that according to 2 in that the two pins 20 . 23 the waves 18 . 19 are received by a sliding bearing, such that in the receiving bore 3 of the radial bearing 1 a sliding bush 25 is used, the inner circumferential surface of the two pins 20 . 23 the waves 16 . 17 receives.

This in 4 shown radial-axial bearing is different from that in 3 shown by the attachment of the profiles 8th on their floors 9 , As can be seen, the floors are 9 the profiles 8th positively held together, with a projection 26 one floor 9 in a recess 27 of the other soil 9 intervenes. This positive connection prevents the profiles from turning 8th in the circumferential direction against each other.

In 5 is another similarly constructed radial-axial bearing shown, with the main difference over in 3 shown bearing is that the pulleys 12 within the profiles 8th by a respective right and left side arranged circlip 28 which are held in the thighs 10 are snapped.

Finally, in 6 another additional way of attaching the pulleys 12 within the profiles 8th shown, these over stampings 29 are held, which extend uniformly circumferentially spaced from each other and from the leg 10 the profiles 8th are formed. In contrast to the previously described combined radial-axial bearings is in 7 one shown, in which both the radial bearing 1 as well as the thrust bearing 2 are designed as plain bearings. In the manner already described is the receiving bore 3 of the thrust bearing 2 with the sliding bush 25 provided and additionally lies on the ground 9 the profiles each have a sliding disk 30 to which then the league 18 . 19 the waves 16 . 17 are supported.

Finally, in 8th shown a final radial-axial bearing, resulting in the nature of the cohesion of the profiles 8th different from those described above. This is done in a form-fitting manner such that a sleeve pulled without cutting 31 the profiles 8th on her outer thighs 10 radially and axially through the inwardly curved two-sided ribs 32 guaranteed.

1

radial bearings

2

axial bearing

3

location hole

4

needle sleeve

5

shelf

6

Cage

7

bearing needle

8th

profile

9

ground

10

leg

11

leg

12

sheave

13

retaining nose

14

Cage

15

rolling elements

16

wave

17

wave

18

Federation

19

Federation

20

spigot

21

axis

22

casing

23

spigot

24

Ronde

25

bush

26

head Start

27

recess

28

circlip

29

Verprägung

30

sliding disk

31

shell

32

shelf

33

gap

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2738287 A [0003]
• - DE 3620102 A1 [0004]
• - DE 6946098 U [0004]
• - DE 10010075 A1 [0004]
• - DE 112004002814 T5 [0004]

Claims (11)

Bearing arrangement for receiving radial and axial loads, consisting of a radial bearing and a double-row, loadable in both directions thrust bearing, characterized in that the radial bearing ( 1 ) concentrically from a receiving bore ( 3 ) of the thrust bearing ( 2 ) is captively enclosed, wherein the axial extent of the radial bearing ( 1 ) essentially that of the thrust bearing ( 2 ) and two through a gap ( 33 ) spaced apart shafts ( 16 . 17 ), wherein at least one of the shafts ( 16 ) from the radial bearing ( 1 ) via a shaft journal ( 20 ) and both waves ( 16 . 17 ) via a shaft collar ( 18 . 19 ) on each side of the thrust bearing ( 2 ) are supported. Bearing arrangement according to claim 1, characterized in that the thrust bearing ( 2 ) each have a U-shaped profile ( 8th ), the axial direction are open to the outside and with their bottoms ( 9 ) lie against each other, wherein each a radially outer leg ( 10 ) with a housing ( 22 ) and one radially inner leg ( 11 ) with the radial bearing ( 1 ) are rotatably connected. Bearing arrangement according to claim 2, characterized in that the profiles ( 8th ) on her back ( 9 ) are positively or materially connected to each other. Bearing arrangement according to claim 1, characterized in that the radial bearing ( 1 ) as a rolling bearing ( 4 ) or as a plain bearing ( 25 ) is trained. Bearing arrangement according to claim 1, characterized in that radial bearings ( 1 ) as a non-cutting shaped needle sleeve ( 4 ) is formed, in a cage ( 6 ) guided bearing needles ( 7 ) on the one hand on a through the needle sleeve ( 4 ) formed outer raceway and on the other hand on a through the pin ( 20 ) of a wave ( 16 Roll off the inner raceway formed. Bearing arrangement according to claim 1, characterized in that the radial bearing ( 1 ) by two in the axial direction juxtaposed non-cutting shaped needle sleeves ( 4 ) formed in a cage ( 6 ) guided bearing needles ( 7 ) on the one hand by the needle sleeves ( 4 ) formed outer races and on the other hand by the pins ( 20 . 23 ) of the waves ( 16 . 17 ) Rolled formed inner raceways. Bearing arrangement according to claim 1, characterized in that the thrust bearing ( 2 ) is designed as a rolling bearing or as a sliding bearing, wherein in cages ( 14 ) guided cylindrical rollers ( 15 ) on raceways, on the one hand from the floors ( 9 ) of profiles ( 8th ) and on the other hand of running discs ( 12 ) or where in the profiles ( 8th ) Sliding discs ( 30 ) are included. Bearing arrangement according to claim 2, characterized in that on the bottom of the profiles depending on a Ronde ( 24 ) arranged as a raceway for the thrust bearing ( 2 ) serves. Bearing arrangement according to claim 2, characterized in that the profiles ( 8th ) on their radially outer legs ( 10 ) a plurality of evenly spaced circumferentially, radially inwardly directed retaining lugs ( 13 ), which the pulleys ( 12 ) of the thrust bearing ( 2 ) engage positively. Bearing arrangement according to claim 2, characterized in that the running disks of the axial bearing ( 2 ) by a retaining ring arranged in the profile ( 28 ) are held. Bearing arrangement according to Claim 2, characterized that the profiles are taken up by a non-cutting shaped sleeve are, whose radially inwardly directed legs engage around this form-fitting manner.