KR20170090116A - Thrust bearing with tilting pad - Google Patents

Thrust bearing with tilting pad Download PDF

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Publication number
KR20170090116A
KR20170090116A KR1020160010592A KR20160010592A KR20170090116A KR 20170090116 A KR20170090116 A KR 20170090116A KR 1020160010592 A KR1020160010592 A KR 1020160010592A KR 20160010592 A KR20160010592 A KR 20160010592A KR 20170090116 A KR20170090116 A KR 20170090116A
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KR
South Korea
Prior art keywords
pivot
circular base
tilting pad
groove
tilting
Prior art date
Application number
KR1020160010592A
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Korean (ko)
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KR101825800B1 (en
Inventor
박상신
장대겸
Original Assignee
영남대학교 산학협력단
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Priority to KR1020160010592A priority Critical patent/KR101825800B1/en
Publication of KR20170090116A publication Critical patent/KR20170090116A/en
Application granted granted Critical
Publication of KR101825800B1 publication Critical patent/KR101825800B1/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
    • F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell bearings
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The present invention relates to a tilting pad thrust bearing, comprising: a circular base; A pivot groove formed concavely toward the center from an upper end of an outer circumferential surface of the circular base; A tilting pad provided on a bottom surface of the plate pad and having a pivot portion which is seated in the pivot groove so as to be rotatable about a longitudinal direction of the pivot groove; And a first support portion supporting the tilting pad toward the center, wherein the first support portion is detachable from the circular base so as to replace the tilting pad.

Description

[0001] THRUST BEARING WITH TILTING PAD [0002]

The present invention relates to a tilting pad thrust bearing, and more particularly, to a tilting pad thrust bearing capable of replacing a tilting pad.

In general, a predetermined apparatus including a rotating shaft having a runner uses a thrust bearing for axially supporting a rotating shaft.

Since such a thrust bearing is used to absorb the thrust load of the rotary shaft, it is also called a thrust bearing.

A bearing called a so-called tilting pad thrust bearing of a thrust bearing supports a runner of the rotating shaft in an upward direction, and a tilting pad is provided so that the center of rotation of the rotating shaft can be maintained constantly by a self- Respectively.

A structure for supporting the tilting pad in the center direction of the thrust bearing has been conventionally provided so as not to be detachable from the thrust bearing.

In the tilting pad thrust bearing according to the related art, when the tilting pad has to be replaced due to abrasion, breakage, or the like, the bearing itself has to be separated from the predetermined device.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and it is an object of the present invention to provide a tilting pad thrust bearing capable of replacing only a tilting pad without detaching a thrust bearing from a device provided with a tilting pad thrust bearing.

According to an aspect of the present invention, there is provided a tilting pad thrust bearing comprising: a circular base; A pivot groove formed concavely toward the center from an upper end of an outer circumferential surface of the circular base; A tilting pad provided on a bottom surface of the plate pad and having a pivot portion which is seated in the pivot groove so as to be rotatable about a longitudinal direction of the pivot groove; And a first support portion supporting the tilting pad toward the center, wherein the first support portion is detachable from the circular base so as to replace the tilting pad.

Preferably, the first support portion is coupled to an outer circumferential surface of the circular base so as to support one end of the pivot portion.

The pair of pivots may be disposed on the upper surface of the circular base to support the tilting pads.

Here, the pivot portion may include: a protrusion protruding from a bottom surface of the plate-shaped pad portion with a predetermined width; And a tilting shaft having at least a portion of the outer circumferential surface corresponding to the curvature of the pivot groove and having an insertion groove into which the protrusion can be inserted.

The pivot pin is provided at both ends of the pivot portion so as to protrude along the longitudinal direction. The pivot pin is inserted into each of the end portion of the pivot groove adjacent to the center of the circular base and the inner side surface of the first support portion. It is preferable that a pin groove is formed.

According to the waterproof performance testing apparatus of the present invention, since the first support portion supporting at least a part of the tilting pad toward the center of the circular base is detachably coupled to the circular base, There is an effect that the tilting pad can be easily replaced even if the first supporting portion is separated from the circular base without separating the entire tilting pad thrust bearing from the tilting pad thrust bearing.

1 is a perspective view of a tilting pad thrust bearing according to an embodiment of the present invention.
FIG. 2 is a view showing a state in which the tilting pad shown in FIG. 1 is tilted.
3 is an exploded perspective view of the tilting pad thrust bearing shown in Fig.
4 is a view for explaining a process of replacing the tilting pad shown in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise. When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, without departing from the spirit or scope of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a tilting pad thrust bearing according to an embodiment of the present invention, FIG. 2 is a view showing a tilting pad shown in FIG. 1, and FIG. 3 is a tilting pad thrust bearing shown in FIG. Fig.

1 to 3, a tilting pad thrust bearing 100 according to an embodiment of the present invention is a bearing capable of absorbing a thrust load of a rotary shaft (not shown) provided with a runner (not shown) A pivotal groove 30, a tilting pad 50, a first support portion 70, and a second support portion 90, as shown in FIG.

Here, the runner is a disk which is concentric with the rotating shaft and is coupled to the rotating shaft, and can be supported by a plurality of tilting pads 50 described later. By supporting the runner by the tilting pad 50, the thrust load of the rotary shaft can be absorbed.

The circular base 10 is a circular base of a metal material and can provide a basic framework in which a tilting pad 50, a first support portion 70, and a second support portion 90 described below can be coupled.

A first coupling hole 11 may be formed on the outer peripheral surface of the circular base 10 so as to be spaced apart from each other with a predetermined interval therebetween through a pivotal groove 30 to be described later. And a second engaging hole 13 spaced apart by a predetermined distance therebetween through a pivotal groove 30 which is formed at a predetermined position.

The first coupling hole 11 is formed in the circular base 10 so that the first coupling portion 70 communicates with the first coupling hole 71 described later and the first supporting portion 70 is inserted into the circular base 10, (Not shown) that can be inserted into the hole.

The second engaging hole 13 is formed in the circular base 10 so that the second engaging hole 90 communicates with the second engaging hole 93 to be described later and the second supporting portion 90 is connected to the circular base 10, (Not shown) that can be inserted into the hole.

The pivot groove 30 is a portion forming a space in which the pivot portion 53 of the tilting pad 50 described later is seated and may be formed concave toward the center from the upper end of the outer peripheral surface of the circular base 10. Here, the concave surface shape formed by the pivot groove 30 may be a shape corresponding to a part of the outer circumferential surface of the cylinder. At this time, a plurality of pivot grooves 30 may be provided along the circumferential direction of the circular base 10. In the present embodiment, four pivot grooves 30 are provided at positions rotated by 90 * n degrees (n = 0, 1, 2, 3) at predetermined positions around the center of the circular base 10 have.

Here, a pin groove 31 into which a pivot pin 535a to be described later can be inserted may be formed at an end of the pivot groove 30 adjacent to the center of the circular base 10. At this time, the pin groove 31 can support the pivot pin 535a when the tilting pad 50 is tilted, which will be described later.

The tilting pad 50 supports the runner of the rotating shaft upward while tilting with respect to the circular base 10 when the rotating shaft rotates, so that the center of rotation of the rotating shaft can maintain the virtual center continuously by the self-aligning operation. At this time, the tilting pads 50 can be provided in the same number as the number of the pivot grooves 30 formed in the circular base 10. In this embodiment, four tilting pads 50 are provided like the pivot grooves 30.

Here, the tilting pad 50 may include a plate-like pad portion 51 and a pivot portion 53.

The plate-like pad portion 51 may be a member that can be confronted with the runner of the rotating shaft, and may have a shape corresponding to a part of the annular plate material such as donut shape.

The pivot portion 53 serves as a tilting center of the tilting pad 50 and is connected to the lower surface of the plate pad portion 51 so as to be rotatable about the longitudinal direction of the pivotal groove 30, (Not shown). At this time, at least a part of the pivot portion 53 may have a shape corresponding to the concave shape of the pivot groove 30. In other words, at least a part of the pivot portion 53 may have a shape corresponding to a portion of the outer circumferential surface of the cylinder.

Pivot pins 535a and 535b may be provided at both ends of the pivot portion 53 so as to protrude along the longitudinal direction. At this time, the pivot pin 535a provided at one end of the pivot portion 53 facing the center of the circular base 10 is inserted and supported in the pin groove 31 formed in the pivot groove 30, The pivot pin 535b provided at the other end of the pivot portion 53 facing the outer circumferential surface of the base 10 can be inserted and supported in the pin groove 73 formed in the first support portion 70 described later.

Here, the pivot portion 53 may include a protruding portion 531, a tilting shaft 533, and a fixing pin 535 which are detachable from each other.

The projecting portion 531 may have a predetermined width from the center of the lower surface of the plate pad portion 51 and protrude downward.

The tilting shaft 533 is a cylindrical member elongated along the radial direction of the circular base 10. At least a part of the outer circumferential surface may have a curvature corresponding to the curvature of the concave surface of the pivotal groove 30, An insertion groove 533a into which the protrusion 531 can be inserted may be formed.

The protrusions 531 and 533 are provided with pin holes 531a and 533b communicating with each other along the radial direction of the circular base 10 when the protrusion 531 is inserted into the insertion groove 533a, May be formed. Here, the pin holes 531a and 533b are inserted and fixed with a fixing pin 535 for fixing the protruding portion 531 and the tilting shaft 533 so that the protruding portion 531 and the tilting shaft 533 are not separated when the protruding portion 531 is inserted into the insertion groove 533a It can be a through hole. In this case, the pin hole formed in the protrusion 531 is referred to as a first pin hole 531a, and the pin hole formed in the tilting shaft 533 may be referred to as a second pin hole 533b.

The fixing pin 535 is inserted into the first pin hole 531a and the second pin hole 533b through the protrusion 531 and the tilting shaft 533b while being inserted into the insertion groove 533a as described above, 533 can be fixed so as not to be separated. At this time, both ends of the fixing pin 535 may be constituted by the above-described pivot pin 535a and pivot pin 535b.

The first support portion 70 is a member that is formed at a curvature corresponding to the outer circumferential surface of the circular base 10 and is coupled to the outer circumferential surface of the circular base 10 and includes at least a portion of the tilting pad 50, It can be supported toward the center. At this time, the first support part 70 can support the other end of the pivot part 53. [ A pin groove 73 into which the pivot pin 535b can be inserted may be formed on the inner side surface of the first support portion 70 and the pin groove 73 may be formed on the inner side surface of the pivot pin 53 when the tilting pad 50 is tilted. It is possible to support the light emitting element 535b.

The first support portion 70 may be detachably coupled to the circular base 10 so that the tilting pad 50 can be replaced.

In other words, the tilting pad thrust bearing 100 of the present invention can have a structure in which the tilting pad 50 can be replaced only by separating the first support portion 70 from the circular base 10.

At this time, the first support portion 70 may have a first fastening hole 71 penetrating along the radial direction of the circular base 10. The first fastening hole 71 is formed such that the first supporting portion 70 is disposed in the circular base 10 so as to communicate with the first fastening hole 11 and then the first supporting portion 70 is fixed to the circular base 10 (Not shown) can be inserted.

The second support portion 90 may be provided to prevent the tilting pad 50 from being displaced upward from the pivotal groove 30.

The second support portion 90 is a substantially rectangular parallelepiped member which is arranged on both sides of the circular base 10 with the pivot groove 30 interposed therebetween and is provided with a pair of pivot portions 53 .

The second supporting portion 90 forms a predetermined curvature in cooperation with the concave surface of the pivot groove 30 so that the inner surface 90a of the second supporting portion 90 is in contact with the upper surface of the circular base 10, The outer peripheral surface can be supported.

The second support portion 90 may be formed with a second fastening hole 93 penetrating along the vertical direction. The second fastening hole 93 is formed such that the second supporting portion 90 is disposed on the circular base 10 so as to communicate with the second fastening hole 13 and then the second supporting portion 90 is fixed to the circular base 10 (Not shown) can be inserted.

Hereinafter, an example of a method of replacing the tilting pad 50 of the above-described tilting pad thrust bearing 100 will be described.

4 is a view for explaining a process of replacing the tilting pad shown in FIG.

First, it is assumed that the tilting pad thrust bearing 100 is installed to axially support a rotary shaft to a predetermined device including a rotary shaft (not shown) having a runner (not shown).

The operator removes the fastening member (not shown) inserted through the first fastening hole 71 and the first fastening hole 11 when it is determined that replacement is necessary due to wear and breakage of the tilting pad 50, The first support portion 70 is separated from the circular base 10.

The tilting pad 50 is moved in the radial direction of the circular base 10 to completely separate the tilting pad 50 from the circular base 10 and then the new tilting pad 50 is moved in the direction of the center of the circular base 10, 53 are fully inserted and seated in the pivot slot 30.

Here, the supporting surface for supporting the pivot portion 53, which is formed by mutual cooperation of the pivot groove 30 and the inner side surfaces 90a of the pair of second supporting portions 90, And serves to guide the pivot portion 53 when it is moved in the radial direction or the center direction of the body 10.

Thereafter, the first support portion 70 is positioned so that the first fastening hole 71 and the first fastening hole 11 are communicated with the circular base 10, and then the fastening member (not shown) is fastened to the first fastening hole 71 and the first engaging hole 11 to fix the first supporting portion 70 to the circular base 10.

The tilting pad thrust bearing 100 of the above-described configuration is configured such that the first support portion 70 that supports at least a portion of the tilting pad 50 toward the center of the circular base 10 is detachable from the circular base 10 Even if the first support portion 70 is separated from the circular base 10 without separating the entirety of the tilting pad thrust bearing 100 from the predetermined apparatus including the rotary shaft having the runner, (50) can be replaced.

The tilting pad thrust bearing 100 is disposed on the upper surface of the circular base 10 and is provided with a pair to support each side of the pivot portion 53 to prevent the tilting pad 50 from separating from the pivot groove 30 The tilting pad 50 can be prevented from being displaced upward from the pivot groove 30 by mutual cooperation of the second supporting portion 90 and the pivot groove 30, The outer peripheral surface of the pivot portion 53 of the tilting pad 50 is supported by the cooperation of the second support portion 90 and the pivot groove 30 when the first support portion 70 is separated from the circular base 10, (50) is slidingly moved in a radial direction and can be stably separated.

Since the tilting pad thrust bearing 100 includes the protruding portion 531 and the tilting shaft 533 which are separable from each other and have a simple shape, 51 is advantageous in that it is easier to mold than in the case of integrally forming the pivot portion 53 which requires a larger volume of the other end adjacent to the circular base 10 than the volume of the one end adjacent to the circular base 10, It is possible to use the device more economically.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

[Description of Reference Numerals]
100: Tilting pad thrust bearing 10: Circular base
11: first engaging hole 13: second engaging hole
30: Pivot groove 31: Pin groove
50: tilting pad 51: plate-shaped pad portion
53: Pivot portion 531:
533: Tilting shaft 535: Fixing pin
70: first supporting portion 71: first fastening hole
90: second support portion 93: second fastening hole

Claims (5)

Circular base;
A pivot groove formed concavely toward the center from an upper end of an outer circumferential surface of the circular base;
A tilting pad having a plate pad portion and a pivot portion provided on a bottom surface of the plate pad portion and seated in the pivot groove to be rotatable about the longitudinal direction of the pivot groove;
A first support for supporting at least a part of the tilting pad toward the center of the circular base;
/ RTI >
Wherein the first support portion is detachable from the circular base so as to replace the tilting pad.
The method according to claim 1,
Wherein the first support portion is coupled to an outer circumferential surface of the circular base so as to support one end of the pivot portion.
The method according to claim 1,
And a second support portion disposed on the upper surface of the circular base and having a pair for supporting each side surface of the pivot portion to prevent the tilting pad from being detached from the pivot groove.
The method according to claim 1,
The pivot portion,
A protrusion protruding from a bottom surface of the plate-shaped pad portion with a predetermined width; And
At least a part of the outer circumferential surface corresponds to a curvature of the pivotal groove, and a tilting axis in which an insertion groove into which the projection is inserted is formed;
The tilting pad thrust bearing.
3. The method of claim 2,
At both ends of the pivot portion, a pivot pin protruding along the longitudinal direction is provided,
And pin grooves into which the pivot pin can be inserted are formed in the end portions of the pivot groove adjacent to the center of the circular base and the inner side surfaces of the first support portion, respectively.
KR1020160010592A 2016-01-28 2016-01-28 Thrust bearing with tilting pad KR101825800B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160010592A KR101825800B1 (en) 2016-01-28 2016-01-28 Thrust bearing with tilting pad

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160010592A KR101825800B1 (en) 2016-01-28 2016-01-28 Thrust bearing with tilting pad

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KR20170090116A true KR20170090116A (en) 2017-08-07
KR101825800B1 KR101825800B1 (en) 2018-02-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019066102A1 (en) * 2017-09-27 2019-04-04 (주)건우테크 Attachable/detachable airfoil thrust bearing
KR102009110B1 (en) * 2018-04-16 2019-08-08 국민대학교산학협력단 Journal bearing
GB2602808A (en) * 2021-01-14 2022-07-20 Aker Solutions As A thrust bearing and a method for reducing wear in a thrust bearing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE212013000164U1 (en) * 2012-07-17 2015-03-20 Us Synthetic Corporation Tipping superhard bearing elements in bearing assemblies, devices and motor assemblies using them

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019066102A1 (en) * 2017-09-27 2019-04-04 (주)건우테크 Attachable/detachable airfoil thrust bearing
KR102009110B1 (en) * 2018-04-16 2019-08-08 국민대학교산학협력단 Journal bearing
GB2602808A (en) * 2021-01-14 2022-07-20 Aker Solutions As A thrust bearing and a method for reducing wear in a thrust bearing
GB2602808B (en) * 2021-01-14 2023-05-17 Aker Solutions As A thrust bearing and a method for reducing wear in a thrust bearing

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