KR20170025829A - Thrust bearing, measuring instrument for friction loss using the same and measuring system for friction loss using the same - Google Patents

Thrust bearing, measuring instrument for friction loss using the same and measuring system for friction loss using the same Download PDF

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Publication number
KR20170025829A
KR20170025829A KR1020150122838A KR20150122838A KR20170025829A KR 20170025829 A KR20170025829 A KR 20170025829A KR 1020150122838 A KR1020150122838 A KR 1020150122838A KR 20150122838 A KR20150122838 A KR 20150122838A KR 20170025829 A KR20170025829 A KR 20170025829A
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KR
South Korea
Prior art keywords
thrust bearing
bearing
friction loss
sensor
thrust
Prior art date
Application number
KR1020150122838A
Other languages
Korean (ko)
Inventor
김동만
Original Assignee
현대위아 주식회사
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Priority to KR1020150122838A priority Critical patent/KR20170025829A/en
Publication of KR20170025829A publication Critical patent/KR20170025829A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0042—Force sensors associated with force applying means applying a torque
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sliding-Contact Bearings (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The present invention relates to a thrust bearing, and more particularly, to a thrust bearing capable of directly measuring a frictional loss with respect to a thrust bearing of a rotating machine and indirectly calculating frictional loss of the radial bearing by calculation, Thrust bearing friction loss measuring apparatus and bearing friction loss measuring system.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thrust bearing, a frictional loss measuring device using the thrust bearing, and a bearing frictional loss measuring system using the frictional loss measuring device,

The present invention relates to a thrust bearing, and more particularly, to a thrust bearing capable of directly measuring a frictional loss with respect to a thrust bearing of a rotating machine and indirectly calculating frictional loss of the radial bearing by calculation, Thrust bearing friction loss measuring apparatus and bearing friction loss measuring system.

Generally, rotating machines have rotating shafts, which are supported and rotated in vertical and horizontal loads by thrust bearings and radial bearings.

At this time, as the rotary shaft is rotated, friction loss occurs.

Therefore, this friction loss should be measured to design or manufacture using a rotating machine.

Conventionally, an external motor was used to measure the torque transmitted to the shaft, thereby measuring the friction loss generated in the entire rotating machine.

However, according to the conventional technology, it is not possible to measure the frictional loss of each of the thrust bearing or the radial bearing provided in the rotating machine. Therefore, it is difficult to determine the cause of defects of the rotating machine, There is a problem that it is difficult to predict the improvement effect.

Further, when the thrust bearing and the radial bearing are exchanged together, it is impossible to confirm whether the friction loss is improved. Therefore, there is a problem that only one component is changed and compared with the existing test data.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a thrust bearing, a thrust bearing friction loss measuring device and a bearing friction loss measuring system capable of directly measuring a friction loss of a thrust bearing of a rotating machine .

It is another object of the present invention to provide a thrust bearing, a thrust bearing friction loss measuring device, and a bearing friction loss measuring system which can measure the friction loss of a radial bearing provided in a rotating machine by measuring a friction loss for a thrust bearing .

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, the present invention provides a bearing device, comprising: a hollow bearing plate; And a fluid passage is formed at a center of the through hole so as to be spaced apart from the bearing plate by a predetermined distance and has a through hole through which a rotating shaft passes, A pressure plate for supporting a thrust load; And a connecting bar for connecting the bearing plate and the pressure plate to each other, wherein the connecting bar is twisted when fluid pressure is generated in the pressure plate.

In a preferred embodiment, a plurality of connection bars are provided.

In a preferred embodiment, the connecting bars are provided symmetrically with respect to each other with respect to the through hole.

The present invention also relates to a thrust bearing according to the present invention; And a sensor provided on the connecting bar, wherein the sensor measures a deformation amount of the connecting bar when the connecting bar is twisted by fluid pressure to calculate a frictional loss of the thrust bearing. Provides a bearing friction loss meter.

In a preferred embodiment, the sensor is a strain gauge.

In addition, the present invention relates to a case; A rotating shaft that rotates inside the case; A radial bearing provided between the case and the rotary shaft for supporting a radial load of the rotary shaft; A thrust bearing provided between the case and the rotating shaft and supporting the thrust load of the rotating shaft; And a sensor provided on the connecting bar of the thrust bearing, wherein the sensor measures a deformation amount of the connecting bar when the connecting bar is twisted by fluid pressure to calculate a frictional loss of the thrust bearing And a bearing friction loss measurement system.

In a preferred embodiment, the friction loss of the radial bearing is calculated by subtracting the friction loss of the thrust bearing from the total friction loss.

In a preferred embodiment, the sensor is a strain gauge.

The present invention has the following excellent effects.

First, according to the thrust bearing, the thrust bearing friction loss measuring device and the bearing friction loss measuring system of the present invention, the frictional loss of the thrust bearing of the rotating machine can be directly measured.

Further, according to the thrust bearing, the thrust bearing friction loss measuring device and the bearing friction loss measuring system of the present invention, the frictional loss of the radial bearing provided in the rotating machine can be measured by measuring the frictional loss of the thrust bearing I have.

1 is a view showing a thrust bearing according to an embodiment of the present invention.
2 is a view showing a thrust bearing friction loss meter according to an embodiment of the present invention.
3 is a view showing a bearing friction loss measuring system according to an embodiment of the present invention.

Although the terms used in the present invention have been selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, the meaning described or used in the detailed description part of the invention The meaning must be grasped.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Like reference numerals designate like elements throughout the specification.

First Embodiment-Thrust Bearing (100)

Referring to FIG. 1, a thrust bearing 100 according to a first embodiment of the present invention is a bearing for supporting a thrust load of a rotating shaft, and includes a bearing plate 110, a pressure plate 120, 130).

The bearing plate 110 is a plate having a hollow 111 formed therein.

Here, the bearing plate 110 is generally used as a disc shape that can be easily installed on a rotating machine, but is not limited thereto.

The pressure plate 120 is a plate for supporting a thrust load, and is located in the hollow 111 so as to be spaced apart from the bearing plate 110 by a predetermined distance.

In addition, the pressure plate 120 has a light hole 121 through which a rotating shaft passes.

In addition, on both sides of the pressure plate 120, fluid is confined by a thrust ring engaged with the rotating shaft, and when the rotating shaft rotates, due to the fluid pressure generated by the rotation of the thrust ring, Is supported.

The connection bar 130 connects the bearing plate 110 and the pressure plate 120 to each other.

Further, when the fluid pressure is generated in the pressure plate 120, the connection bar 130 is twisted by the fluid pressure.

The plurality of connection bars 130 may be disposed symmetrically with respect to the through holes 121. In addition,

This is to ensure that the torsion of the connecting bar 130 due to the fluid pressure is symmetrical to each other.

Also, within the range in which the connection bar 130 can measure the fluid pressure, the thickness of the connection bar 130 must be increased and the length thereof must be decreased, which prevents breakage of the connection bar 130, The purpose of the thrust bearing is to maintain the function of the torsional deformation.

A portion of the inner circumference of the bearing plate 110 to which the connecting bar 130 is attached may have grooves 112 having a predetermined depth in the outer circumferential direction.

That is, in the thrust bearing 100 according to the first embodiment of the present invention, the fluid pressure is formed by the rotation of the rotating shaft, and the connecting bar 130 is twisted by the fluid pressure.

Thus, the friction loss of the thrust bearing can be easily measured by measuring the amount of twist of the connecting bar 130.

Second Embodiment - Thrust Bearing Friction Loss Measuring Machine (200)

Referring to FIG. 2, the thrust bearing friction loss measuring device 200 according to the second embodiment of the present invention includes a thrust bearing 100 and a sensor 210.

Here, since the thrust bearing 100 is the same as the thrust bearing 100 according to the first embodiment of the present invention, detailed description thereof will be omitted.

The sensor 210 is a sensor capable of measuring a deformation amount of the connection bar 130 with respect to twist.

That is, the sensor 210 calculates the frictional loss of the thrust bearing 100 by measuring the amount of twist of the connecting bar 130 when the connection bar 130 is twisted by fluid pressure I can do it.

Also, it is preferable that the sensor 210 uses a strain gauge.

In order to supply current to the sensor 210, an electric wire 210 connected to the sensor 210 may be provided.

Here, the electric wire 210 is connected to the sensor 210 through a spaced space between the bearing plate 110 and the pressure plate 120, and can easily supply electric current.

That is, the thrust bearing friction loss measuring device 200 according to the second embodiment of the present invention measures the amount of twist deformation generated in the connecting bar 130 by the fluid pressure, thereby facilitating the frictional loss to the thrust bearing of the rotating machine .

Third Embodiment - Bearing Friction Loss Measurement System (200)

Referring to FIG. 3, a bearing friction loss measuring system 300 according to a third embodiment of the present invention is a system capable of measuring both frictional losses of a thrust bearing and a radial bearing of a rotating machine, A rotary shaft 320, a radial bearing 330, a thrust bearing 100, and a sensor 210. [

The case 310 is a case for protecting the rotating shaft 320, the radial bearing 330, the thrust bearing 100 and the sensor 210 provided therein and is not limited in structure or shape .

The rotating shaft 320 rotates inside the case.

The radial bearing 330 is disposed between the case 310 and the rotating shaft 320 and supports the radial load of the rotating shaft 320.

The thrust bearing 100 is provided between the case 310 and the rotary shaft 320 and supports the thrust load of the rotary shaft 320. In the first embodiment of the present invention, The thrust bearing 100 will not be described in detail.

In addition, the sensor 210 is substantially the same as the sensor 210 of the thrust bearing friction loss measuring device 200 of the second embodiment described above.

Since the bearing friction loss measuring system 300 according to the third embodiment of the present invention includes the friction loss measuring device 200, the frictional loss of the thrust bearing 100 can be easily calculated .

The bearing friction loss measuring system 300 according to the third embodiment of the present invention may be used to measure the torque generated by the motor 10 and the torque transmitted to the rotating shaft 320 And the total friction loss generated in the bearing friction loss system 300 can be calculated through the difference.

The frictional loss of the radial bearing 330 can be calculated by subtracting the frictional loss of the thrust bearing 100 from the calculated total frictional loss.

That is, the bearing friction loss measuring system 300 according to the second embodiment of the present invention can calculate the frictional loss of the thrust bearing 100 without directly measuring the frictional loss of the radial bearing 330.

Accordingly, the bearing friction loss measuring system 300 according to the present invention can measure the frictional loss of the thrust bearing 100 and the frictional loss of the radial bearing 330, respectively, Can be analyzed and evaluated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the present invention. Various changes and modifications will be possible.

100: Thrust bearing 110: Bearing plate
120: pressure plate 130: connecting bar
200: thrust bearing friction loss meter 210: sensor
300: Bearing friction loss measuring system 310: Case
320: rotating shaft 330: radial bearing

Claims (8)

A hollow bearing plate;
And a fluid passage is formed at a center of the through hole so as to be spaced apart from the bearing plate by a predetermined distance. The through hole is formed at a center of the through hole for passing the rotating shaft therethrough. Fluid is restrained on both sides. When the rotating shaft rotates, A pressure plate for supporting a thrust load; And
And a connecting bar connecting the bearing plate and the pressure plate to each other,
Wherein the connecting bar is twisted when fluid pressure is generated in the pressure plate.
The method according to claim 1,
Wherein a plurality of connecting bars are provided.
3. The method of claim 2,
Wherein the connecting bars are symmetrical with respect to each other with respect to the through hole.
A thrust bearing according to any one of claims 1 to 3; And
And a sensor provided on the connection bar,
The sensor
Wherein the frictional loss of the thrust bearing is calculated by measuring a deformation amount of the connecting bar when the connecting bar is twisted by fluid pressure.
5. The method of claim 4,
Wherein the sensor is a strain gauge (Strain Gauge).
case;
A rotating shaft that rotates inside the case;
A radial bearing provided between the case and the rotary shaft for supporting a radial load of the rotary shaft;
The thrust bearing according to any one of claims 1 to 3, which is provided between the case and the rotating shaft and supports the thrust load of the rotating shaft. And
And a sensor provided on the connection bar of the thrust bearing,
Wherein the sensor calculates a frictional loss of the thrust bearing by measuring a deformation amount of the connecting bar when the connecting bar is twisted by fluid pressure.
8. The method of claim 7,
The friction loss of the radial bearing is,
Wherein the friction loss is calculated by subtracting the friction loss of the thrust bearing from the total friction loss.
8. The method of claim 7,
Wherein the sensor is a strain gauge.
KR1020150122838A 2015-08-31 2015-08-31 Thrust bearing, measuring instrument for friction loss using the same and measuring system for friction loss using the same KR20170025829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150122838A KR20170025829A (en) 2015-08-31 2015-08-31 Thrust bearing, measuring instrument for friction loss using the same and measuring system for friction loss using the same

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Application Number Priority Date Filing Date Title
KR1020150122838A KR20170025829A (en) 2015-08-31 2015-08-31 Thrust bearing, measuring instrument for friction loss using the same and measuring system for friction loss using the same

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KR20170025829A true KR20170025829A (en) 2017-03-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959514A (en) * 2019-03-29 2019-07-02 上海大学 Match angular contact ball bearing dynamic friction performance online test device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959514A (en) * 2019-03-29 2019-07-02 上海大学 Match angular contact ball bearing dynamic friction performance online test device
CN109959514B (en) * 2019-03-29 2021-04-09 上海大学 Paired angular contact ball bearing dynamic friction performance online testing device

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