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Machinery

A technology for mechanical devices and bearing devices, applied in mechanical equipment, transportation and packaging, engine components, etc., can solve the problems of long-lasting friction and high fuel consumption, and achieve the effect of eliminating the drop of set preload and eliminating the phenomenon of settlement.

Active Publication Date: 2020-02-11
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the actual settlement phenomenon does not always correspond to the estimated value, it often leads to the fact that the bearing arrangement is operated with an excessive preload over the entire service life
Corresponding negative consequences are persistently greater friction and higher fuel consumption than required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] exist figure 1 Mechanism 1 can be seen in , which is a pinion bearing unit of a rear axle drive of a truck (LKW). The shaft part 3 , ie the bevel pinion shaft, is supported in the (rear axle transmission) housing 2 . The shaft part 3 is supported by means of bearing arrangements 4 , 5 which are formed by two tapered roller bearings 4 and 5 . They are positioned in an O-arrangement and have a common bearing outer ring 6 formed directly by the housing 2 . Correspondingly, the two raceways of the tapered rollers 11 and 17 are ground directly in the housing 2 .

[0028] Furthermore, there are two bearing inner rings 7 and 8, it is provided in this case that one of these bearing inner rings is figure 1 The bearing inner ring on the right is formed directly by the shaft part 3 . Correspondingly, the raceways of the tapered rollers 17 are ground directly into the shaft part 3 .

[0029] What is important is that at least one bearing inner ring—in this case the bearing inn...

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PUM

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Abstract

The invention relates to a mechanical device (1) comprising a housing (2) in which a shaft (3) is rotatably supported by means of bearing means (4, 5), wherein the bearing means (4,5) have two axially preloadable tapered roller bearings, wherein the tapered roller bearings (4,5) each have a bearing outer ring (6) and a bearing inner ring (7,8 ). In order to improve the retention of the adjusted preload, the invention therefore provides that at least one bearing inner ring (7) has a sleeve-shaped projection (9) formed directly from the material of the bearing inner ring (7) in the region of its axial end ), the protrusion directly contacts the end face (10) of the adjacent bearing inner ring (8).

Description

technical field [0001] The invention relates to a mechanical device comprising a housing in which a shaft is rotatably supported by means of a bearing arrangement, wherein the bearing arrangement has two tapered roller bearings which can be preloaded against each other in the axial direction, The tapered roller bearings each have a bearing outer ring and a bearing inner ring. Background technique [0002] Such a mechanical device is used, for example, as a rear axle drive of a motor vehicle, in which a pinion shaft is supported in a housing. The required two tapered roller bearings are kept at a defined distance by spacer sleeves. It is important for the proper functioning of this device that the two tapered roller bearings (mostly positioned in an O-shaped arrangement) can be adjusted precisely to a predetermined axial preload. If the axial preload is too small, then gear meshing problems can arise which lead to increased noise levels and mesh wear. If the preload in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/58F16C35/04
CPCF16C2361/61F16C19/386F16C19/505F16C25/08F16C33/581F16C33/586B60B27/0094B60B27/001B60B27/0026F16C19/385F16C19/364F16C33/60
Inventor P·卡特萨罗斯
Owner AB SKF