ROLLER BEARING ASSEMBLY FOR DETERMINING LOADS

Abstract

A roller bearing assembly for determining loads on a roller bearing includes a roller bearing having coaxial inner and outer rings and an axis of rotation, and a plurality of rollers each having a rotation axis being arranged between the rings. At least one ring has recess for receiving a force-measuring pin. A force-measuring pin is received in the recess. The longitudinal axis of the force-measuring pin extends at least partly along the axis of rotation of the roller bearing. The recess and the force-measuring pin extends into a region, which is under a load, of the ring that has the recess such that at least one vertical projection plane perpendicular to the rotation axis of the rollers extends along the force-measuring pin and a region of maximum load. This allows loads to be reliably measured.

Claims

1. A roller bearing assembly for determining loads on a roller bearing, the assembly comprising: a roller bearing with coaxial inner and outer rings and an axis of rotation, a plurality of rollers each having a rotation axis arranged between the inner ring and the outer ring, and at least one of the rings having at least one recess for receiving a force-measuring pin, a force-measuring pin received in the recess, a longitudinal axis of the force-measuring pin arranged in the recess extending at least partly along the axis of rotation of the roller bearing, and the at least one recess and the force-measuring pin extending along the longitudinal axis into a region, which is under a load, of the ring that has the at least one recess such that at least one vertical projection plane perpendicular to the rotation axis of the rollers extends along the force-measuring pin and a region of maximum load.

2. The roller bearing assembly according to claim 1, wherein the at least one recess includes a plurality of recesses and the roller bearing has a plurality of the force-measuring pins arranged in the recesses on at least one of the rings.

3. The roller bearing assembly according to claim 2, wherein the at least one recess for receiving the force-measuring pin is arranged in one of the rings that is configured to be fixed in position.

4. The rolling bearing assembly according to claim 2, wherein at least four of the force-measuring pins are arranged on at least one of the rings in such that two of the force-measuring pins are arranged to be opposite one another along a respective diagonal axis on the at least one ring.

5. The roller bearing assembly according to claim 4, wherein two of the force-measuring pins are arranged along the diagonal axis formed as a horizontal axis that corresponds to the longitudinal axis of each of the two of the force-measuring pins, and said two of the force-measuring pins have a same length.

6. The roller bearing assembly according to claim 1, wherein a length of the at least one force-measuring pin along the longitudinal axis depends on mechanical properties of the ring, the length of the at least one force-measuring pin along the longitudinal axis for one of the rings with high rigidity being formed to be longer than for one of the rings with a lower rigidity.

7. The roller bearing assembly according to claim 1, wherein the longitudinal axis of the force-measuring pin is angled with respect to the axis of rotation of the roller bearing.

8. The roller bearing assembly according to claim 7, wherein the longitudinal axis of the force-measuring pin is angled to the axis of rotation of the roller bearing such that the longitudinal axis of the force-measuring pin is arranged parallel to the rotation axis of the rollers.

9. The roller bearing assembly according to claim 1, wherein the longitudinal axis of the force-measuring pin is arranged parallel to the axis of rotation of the roller bearing.

10. A roller bearing configured for use in a roller bearing assembly for determining loads, the roller bearing comprising: a roller bearing with coaxial inner and outer rings and an axis of rotation, a plurality of rollers each having a rotation axis arranged between the inner ring and the outer ring, and at least one of the rings having at least one recess configured for receiving a force-measuring pin; and the at least one recess extends into a region, which is adapted to be under a load, of the ring that has the at least one recess such that at least one vertical projection plane perpendicular to the rotation axis of the rollers extends along the recess and a region of maximum load.

11. The roller bearing assembly according to claim 2, wherein the force-measuring pins are arranged in both of the rings.

12. The roller bearing assembly according to claim 2, wherein at least two of the force-measuring pins arranged in the recesses have different lengths along longitudinal axis thereof.

13. The roller bearing assembly according to claim 2, wherein at least two of the force-measuring pins arranged in the recesses are distributed circumferentially on a respective one of the rings.

14. The roller bearing assembly according to claim 4, wherein the force-measuring pins are arranged as two pairs of the force-measuring pins, each of the pairs of the force-measuring pins being opposite one another along a respective one of the diagonal axes, and the two diagonal axes extend such that one of the diagonal axes is a horizontal axis and an other of the diagonal axes is a vertical axis.

15. The roller bearing assembly according to claim 4, wherein two of the force-measuring pins are arranged along the diagonal axis formed as a vertical axis that corresponds to the longitudinal axis of each of the two of the force-measuring pins, and said two of the force-measuring pins have a same length.

16. The roller bearing assembly according to claim 7, wherein the longitudinal axis of the force-measuring pin is angled by 45 degrees to the axis of rotation of the roller bearing.

17. The roller bearing assembly according to claim 7, wherein there are a plurality of the force-measuring pins, and the longitudinal axes of the force-measuring pins are angled by 45 degrees to the axis of rotation of the roller bearing.

18. The roller bearing assembly according to claim 8, wherein there are a plurality of the force-measuring pins, and the longitudinal axes of the force-measuring pins are angled to the axis of rotation of the roller bearing such that the longitudinal axes of the force-measuring pins are arranged parallel to the rotation axis of the rollers.

19. A roller bearing assembly for determining loads on a roller bearing, the assembly comprising: a roller bearing with coaxial inner and outer rings and an axis of rotation, a plurality of rollers each having a rotation axis arranged between the inner ring and the outer ring, and at least one of the rings having at least two recess for receiving force-measuring pins; a force-measuring pin received in each of the recesses, a longitudinal axis of each of the force-measuring pins arranged in the recesses extending at least partly along the axis of rotation of the roller bearing; the recesses and the force-measuring pins extending along the longitudinal axis into a region, which is under a load, of the ring that has the recesses such that at least one vertical projection plane perpendicular to the rotation axis of the rollers extends along the force-measuring pin and a region of maximum load; and the force-measuring pins arranged diametrically opposite to one another in the recesses and have different lengths along longitudinal axis thereof.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the following, the disclosure is explained by way of example with reference to the accompanying drawings using preferred exemplary embodiments, in which the features shown below can represent an aspect of the disclosure both individually and in combination. In the figures:

[0035] FIG. 1: shows a roller bearing assembly having a single-row roller bearing and having two force-measuring pins of different lengths according to a first embodiment, and

[0036] FIG. 2: shows a roller bearing assembly having a two-row roller bearing and having two force-measuring pins arranged parallel to the respective rotation axis of the rollers according to a second embodiment.

DETAILED DESCRIPTION

[0037] FIGS. 1 and 2 each show a roller bearing assembly 10 for determining loads B on a roller bearing 12. The specifically illustrated roller bearing assembly 10 is, for example, a tapered roller bearing assembly. The specifically illustrated roller bearing 12 is, for example, a tapered roller bearing. Spherical roller bearing assemblies with spherical roller bearings, cylindrical roller bearing assemblies with cylindrical roller bearings and similarly acting bearing assemblies with similarly acting bearings are also possible.

[0038] For this purpose, the roller bearing assembly 10 has a roller bearing 12, which has two coaxial rings 14, 16, specifically an inner ring 14 and an outer ring 16, and an axis of rotation D, a plurality of rollers 15 each having a rotation axis R being arranged between the inner ring 14 and the outer ring 16, and at least one of the rings 14, 16 having at least one recess 18 for receiving a force-measuring pin 20,

[0039] The roller bearing assembly 10 also has at least one force-measuring pin 20, which is received in the recess 18, the longitudinal axis L of the force-measuring pin 20 arranged in the recess 18 extending at least partly along the axis of rotation D of the roller bearing 12.

[0040] Thus, the at least one recess 18 and the at least one force-measuring pin 20 extend along the longitudinal axis L into a region, which is under a load B, of the ring 14, 16 that has the at least one recess 18 in such a way that at least one vertical projection plane P perpendicular to the rotation axis R of the rollers 15 extends along the force-measuring pin 20 and a region of maximum load B.

[0041] A schematic representation of the projection vertical plane P is shown in FIG. 1. In contrast, FIGS. 1 and 2 always show an axis DR of the contact angle of the rollers 15. As shown in FIG. 1, the axis DR of the contact angle of the rollers 15 does not coincide with the maximum range of the load B. This is only given by the projection vertical plane P which is perpendicular to the rotation axis R of the rollers 15. It can be sufficient if the force-measuring pin 20 rests with one end on the projection vertical plane P.

[0042] According to FIG. 1, it is shown by way of example that the roller bearing 12 has a multiplicity of force-measuring pins 20 arranged in recesses 18 on an outer ring 16. In this case, for example, at least two force-measuring pins 20 arranged in the recesses 18 are designed to be of different lengths along their longitudinal axis L.

[0043] FIGS. 1 and 2 disclose the following by way of example.

[0044] According to FIG. 1, it is shown by way of example that at least two force-measuring pins 20 arranged in the recesses 18 are arranged distributed circumferentially on the outer ring 16.

[0045] In particular, it is provided that the at least one recess 18 for receiving a force-measuring pin 20 is arranged in a ring 14, 16 fixed to the environment.

[0046] Furthermore, it is provided in particular that at least four force-measuring pins 20 are circumferentially arranged and designed on at least one ring 14, 16 in such a way that two force-measuring pins 20 are arranged opposite one another along a respective diagonal axis on the at least one ring 14, 16.

[0047] The two diagonal axes run in such a way that one diagonal axis is a horizontal axis and/or the other diagonal axis is a vertical axis.

[0048] According to FIG. 1, it is shown by way of example that at least two force-measuring pins 20 are arranged and designed circumferentially on the outer ring 16 in such a way that two force-measuring pins 20 are arranged opposite one another along a respective diagonal axis on the outer ring 16. The at least one diagonal axis runs in such a way that it is a vertical axis.

[0049] In particular, it is provided that the at least two force-measuring pins 20 along the diagonal axis formed as a horizontal axis along their longitudinal axis L have the same length and/or in that the at least two force-measuring pins 20 along the diagonal axis formed as a vertical axis along their longitudinal axis L have the same length.

[0050] Furthermore, it is provided in particular that the length of the at least one force-measuring pin 20 along its longitudinal axis L depends on the mechanical properties of the ring 14, 16, the length of the at least one force-measuring pin 20 along its longitudinal axis L in the case of a ring 14, 16 being formed longer with high rigidity than in the case of a ring 14, 16 with low rigidity.

[0051] According to FIG. 2, it is shown by way of example that the longitudinal axis L of at least one force-measuring pin 20, preferably a plurality of force-measuring pins 20, is angled, in particular 45 degrees, to the axis of rotation D of the roller bearing 12.

[0052] According to FIG. 2, it is also shown by way of example that the longitudinal axes L of at least two force-measuring pins 20 are arranged at an angle to the axis of rotation D of the roller bearing 12 such that the longitudinal axes L of the at least two force-measuring pins 20 are arranged parallel to the rotation axis R of the rollers 15.

[0053] According to FIG. 1, it is shown by way of example that the longitudinal axes L of at least two force-measuring pins 20 are arranged parallel to the axis of rotation D of the roller bearing 12.

LIST OF REFERENCE SYMBOLS

[0054] 10 Roller bearing assembly [0055] 12 Roller bearing [0056] 14 Inner ring [0057] 15 Roller [0058] 16 Outer ring [0059] 18 Recess [0060] 20 Force-measuring pin [0061] D Axis of rotation of the roller bearing [0062] R Rotation axis of the roller [0063] L Longitudinal axis of the force-measuring pin [0064] B Region of the ring which is under load having the at least one recess [0065] DR Axis of the contact angle of the roller