KR20130040089A - A tilting pad of the bearing - Google Patents

Abstract

PURPOSE: A replaceable tilting pad of a bearing is provided to simply replace the pad when the replacement of the tilting pad caused by the abrasion and damage of the tilting pad is necessary. CONSTITUTION: A replaceable tilting pad of a bearing comprises a fixing pad(110), a first substitute pad(120), a first attaching member, a first insertion groove, and a first tilting member(150). The fixing pad is arranged inside a casing and separately from the inner circumference of the casing. The first substitute pad is arranged in the other side of the fixing pad, thereby being detachably attached to the fixing pad. The inner circumference of the first substitute pad is in contact with a rotary shaft. The first attaching member attaches the first substitute pad to the fixing pad. Both ends of the fixing pad are respectively inserted into the first insertion groove, thereby fixing the fixing pad to the inside of the casing. The first tilting member elastically supports the fixing pad to be stably tilted.

Description

A tilting pad of the bearing

The present invention relates to a tilting pad of a bearing which is practical for replacement, and more particularly, if the replacement is required due to wear and damage due to the characteristics of the tilting pad which is in contact with the rotating shaft rotating at high speed at a long time of use and must be damaged. Only replacement pads belonging to a part can be easily replaced and reused, and replacement is easy and replacement costs can be reduced.

In general, the bearing is a means for supporting the axis of rotational movement and the axis of reciprocating movement to keep the movement smoothly. These types of bearings can be classified into sliding bearings and rolling bearings according to the contact types of the shafts and bearings, and are classified into journal bearings and thrust bearings according to the load direction of the shafts.

The sliding bearing is a sliding friction bearing in which a thin oil film or a pressure gas is interposed between the shaft and the bearing metal to perform relative sliding movements. Bearing.

Such a journal bearing is mounted with a pad in which a shaft hole is formed in the casing. The shaft hole formed inside the pad is inserted into and mounted with a shaft for rotational movement. In this case, a suitable gap is maintained between the inner surface of the shaft hole and the outer surface of the shaft, and the oil supplied through the through hole formed in the casing is provided in the gap between the shaft hole and the shaft. The oil film is formed by coating on the inner circumferential surface of the pad, and the oil film is formed so that rotation is supported without direct contact between the shaft hole and the shaft. However, for the high efficiency and light weight of the industrial machinery, the rotational speed of the industrial machinery is gradually developing at a high speed. As a result, the existing journal bearings are required to secure stability at a high speed. ) Has been developed and used.

Such a bearing having a tilting pad supports the rotating shaft with a tilting pad installed to be rotatable to compensate for the eccentricity or inclination of the rotating shaft so as to more stably rotate the rotating shaft.

Here, the conventionally developed pad tilted bearing is registered Utility Model Publication No. 20-0368652 (tilting pad bearing structure of the steam turbine rotor), characterized in that the pad is separated into a plurality of pieces for the smooth tilting of the pad, Patent No. 10-0759598 (a bearing with a tilting pad supported by a flexible web) has been developed and proposed.

However, the tilting pads of the bearings that are in contact with the rotating shafts that rotate at high speed are usually worn out and damaged due to friction with the rotating shafts. However, the conventional bearings have to replace the entire tilting pads. There was a problem that the replacement cost is wasted.

Furthermore, Korean Patent Publication No. 10-0759598 (a bearing having a tilting pad supported by a flexible web) has to be replaced further by replacing the entire tilting pad and the casing due to the structure of the tilting pad and the casing (housing) being integrally formed. It is cumbersome, and there is a problem in that replacement costs are wasted.

The present invention has been proposed to solve the above-mentioned problems, the object of which is that if the replacement is required due to wear and damage due to the characteristics of the tilting pad that must be worn and damaged in contact with the rotating shaft rotating at high speed during long-term use, Only replacement pads belonging to a part of the tilting pad can be easily replaced and reused, thereby simplifying replacement and reducing replacement costs.

In addition, by inducing gentle tilting by the elastic force of the elastic member such as spring and rubber, the replacement that can provide structural safety of the product is to provide a tilting pad of the practical bearing.

A tilting pad of a bearing which is practical to replace according to an embodiment of the present invention for achieving the above object is coupled to the inner peripheral surface of the casing so as to stably reduce the shaking, shaking or abnormal vibration of the rotating shaft while supporting the rotating shaft penetrated therein. In the tilting pad supporting the rotating shaft, a plurality of tilting pads formed at equal intervals on the inner circumferential surface of the casing,

Located inside the casing, one outer circumference has an arc shape, one outer circumference is fixed to the spaced apart from the inner circumference of the casing; and the other side of the fixing pad to be detachable to the fixing pad Is configured, the inner circumferential surface is a first replacement pad in contact with the rotating shaft; and a first detachment means for easily detaching the first replacement pad to the fixing pad; and both ends of the fixing pad is inserted into the Two first insertion grooves formed on the inner circumferential surface of the casing so that the fixing pad is fixed to the inside of the casing; and a first tilting elastically supported between the casing and the fixing pad to stably tilt the fixing pad. Means; characterized in that it comprises a.

In addition, the first detachment means is formed in correspondence with the number of at least one fixing protrusion formed on the other outer surface of the fixing pad, and the fixing protrusion of the fixing pad, the fixing protrusion of the first replacement pad to be inserted Characterized in that it comprises at least one fixing groove formed on one side.

In addition, the first tilting means is formed between the casing and the fixing pad, the first elastic member for elastically supporting the fixing pad and the inner circumferential surface of the casing, one end of the first elastic member is inserted It is formed on the first settled groove and one side outer surface of the fixing pad, the other end of the first elastic member is configured to include a second settling groove is inserted into the settle, the first elastic member having an elastic Spring or rubber is used.

A tilting pad of a bearing which is practical to replace according to an embodiment of the present invention for achieving the above object is coupled to the inner peripheral surface of the casing so as to stably reduce the shaking, shaking or abnormal vibration of the rotating shaft while supporting the rotating shaft penetrated therein. In the tilting pad supporting the rotating shaft, a plurality of tilting pads formed at equal intervals on the inner circumferential surface of the casing,

Positioned inside the casing and having elasticity, one side of the casing inner circumferential surface is spaced apart from the inner circumferential surface of the casing; and the other side of the leaf spring is configured to be detachable from the leaf spring, the inner circumferential surface A second replacement pad in contact with the rotating shaft; and second detachment means for easily detaching the second replacement pad to the leaf spring; and both ends of the leaf spring are respectively inserted into the leaf spring. Two second insertion grooves formed on the inner circumferential surface of the casing to be fixed within the casing; and second tilting means positioned between the casing and the leaf spring to elastically support the leaf spring to be stably tilted. Characterized in that the configuration.

The second detachable means may include at least one through hole penetrating the inside of the leaf spring, a male coupler having a screw thread formed on the outer circumferential surface thereof, and a number of the through holes. The groove is formed on one side of the second replacement pad, and the inner circumferential surface of the groove includes a female coupler formed with a screw thread engaged with the screw of the male coupler.

In addition, the second tilting means is formed between the casing and the leaf spring to elastically support the leaf spring, and is formed on the inner peripheral surface of the casing, one end of the second elastic member is inserted It is formed on the third settling groove and the outer surface of one side of the leaf spring, and the other end of the second elastic member comprises a fourth settling groove is inserted, the second elastic member having elasticity Spring or rubber is used.

The first replacement pad and the second replacement pad may be formed on the inner circumferential surfaces of the first replacement pad and the second replacement pad in contact with the rotation shaft by laminating a reinforcement layer including carbon. It is characterized in that the pad to prevent wear and damage.

As described above, according to the tilting pad of the bearing, in which the replacement according to the present invention is practical, if the replacement is required due to wear and damage due to the characteristics of the tilting pad, which is in contact with the rotating shaft rotating at high speed during long-term use, it must be worn and damaged. Only replacement pads belonging to a part can be easily replaced and reused, thereby simplifying the replacement and reducing the replacement cost.

In addition, by inducing gentle tilting by the elastic force of the elastic member, such as spring and rubber, there is an effect that can provide structural safety of the product.

1 is a perspective view of a tilting pad of a bearing in which the replacement is practical according to an embodiment of the present invention;
FIG. 2 is a partial perspective view of the tilting pad of the replaceable bearing shown in FIG. 1.
3 is a longitudinal cross-sectional view of the tilting pad of the replaceable bearing shown in FIG. 1;
4 is a longitudinal cross-sectional view of a tilting pad of a bearing in which replacement is practical according to another embodiment of the present invention;
5 is a state diagram used for explaining the installation and replacement of the tilting pad of the bearing shown in Figure 1 practical replacement

The tilting pad of the bearing which is practically replaceable according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 illustrate a tilting pad of a bearing for practical replacement according to an embodiment of the present invention, FIG. 1 is a perspective view of a tilting pad of a bearing for practical replacement according to an embodiment of the present invention, and FIG. 3 is a partial perspective view of the tilting pad of the bearing shown in FIG. 1 for replacement, FIG. 3 is a longitudinal cross-sectional view of the tilting pad of the bearing shown in FIG. 1 for replacement, and FIG. 4 is a replacement according to another embodiment of the present invention. 5 is a longitudinal cross-sectional view of the tilting pad of the bearing, and FIG. 5 is a state diagram for explaining the installation and replacement of the tilting pad of the bearing shown in FIG.

As shown in the figure, the tilting pad 100 of the bearing which can be replaced according to an embodiment of the present invention is a fixing pad 110, the first replacement pad 120, the first detaching means 130 and The first insertion groove 140 and the first tilting means 150 are included.

As shown in Figures 1 to 3, the fixing pad 110 is located inside the casing (2), one outer circumference has an arc shape, one outer circumference and the inner circumferential surface of the casing (2) Position it apart.

Here, since the fixing pad 110 and the inner circumferential surface of the casing 2 are spaced apart from each other to form a predetermined interval, the tilting space of the fixing pad 110 is easily secured.

As shown in Figures 1 to 3, the first replacement pad 120 is located on the other side of the fixing pad 110 is configured to be detachable to the fixing pad 110, the inner peripheral surface of the rotary shaft (1) Contact with

Here, of course, the inner circumferential surface of the first replacement pad 120 is formed in an arc shape so that the rotating shaft 1 that rotates at high speed is stably contacted.

In addition, as shown in FIGS. 1 to 3, the inner circumferential surface of the first replacement pad 120 in contact with the rotation shaft 1 includes a carbon, including hardness, abrasion resistance, and heat resistance. The stack 160 is formed to prevent the first replacement pad 120 from being damaged due to friction with the rotating shaft 1, thereby improving durability of the product.

Here, of course, a tin-based alloy containing scapolite or a lead-based alloy containing lead may be used as the reinforcement layer 160.

As shown in Figures 1 to 3, the first detachable means 130 is to allow the first replacement pad 120 to be easily detached to the fixing pad 110,

At least one fixing protrusion 131 formed on the other outer surface of the fixing pad 110 and the fixing protrusion 131 of the fixing pad 130 are formed corresponding to the number of the fixing protrusions 131. It is configured to include at least one fixing groove 132 formed on one side of the first replacement pad 110 to be inserted.

Here, as shown in FIG. 5A, the fixing protrusion 131 is formed in a tapered shape that is gradually sharpened as the fixing protrusion 131 extends from the first replacement pad 120 in the direction of the fixing pad 110, thereby forming the fixing protrusion 131. By sliding and inserting into the fixing groove 132, the first replacement pad 120 having the fixing groove 132 formed on the fixing pad 110 on which the fixing protrusion 131 is formed is firmly bound. .

That is, if the replacement is required due to wear and damage due to the characteristics of the bearing that is in contact with the rotating shaft that rotates at high speed during long-term use wear and damage, as shown in Figure 5c replacement of the present invention is a practical tilting pad 100 ) Can be easily replaced by reusing only the first replacement pad 120 belonging to a part, thereby making it easy to replace and reducing the replacement cost.

As shown in FIGS. 1 to 3, both ends of the fixing pad 110 are inserted into the first insertion grooves 140 so that the fixing pad 110 is fixed in the casing 2. Two are formed spaced apart from the inner circumferential surface of the casing 2.

As shown in FIGS. 2 and 3, the first tilting means 150 is positioned between the casing 2 and the fixing pad 110 to elastically support the fixing pad 110 to be stably tilted. By doing

A first elastic member 151 positioned between the casing 2 and the fixing pad 110 to elastically support the fixing pad 110, and formed on an inner circumferential surface of the casing 2; The first settle groove 152 into which one end of the elastic member 151 is inserted and formed on one outer surface of the fixing pad 110, and the other end of the first elastic member 151 is inserted into It is configured to include two settling groove 152.

That is, the abnormal vibration of the rotation shaft 1 is induced by inducing a gentle tilting of the first replacement pad 110 in contact with the rotation shaft 1 where shaking or abnormal vibration occurs due to the excellent elastic force of the first elastic member 151. This has the advantage of being stably reduced.

Here, it is preferable to use a spring or rubber having elasticity as the first elastic member 151.

The tilting pad 100 of the bearing which can be replaced according to another embodiment of the present invention includes a leaf spring 210, a second replacement pad 220, a second detaching means 230, and a second insertion groove 240. ), And a second tilting means (250).

As shown in FIG. 4, the leaf spring 210 is positioned inside the casing 2 to have elasticity, and one side close to the inner circumferential surface of the casing 2 is spaced apart from the inner circumferential surface of the casing 2. Be sure to

Here, the leaf spring 210 and the inner circumferential surface of the casing 2 are spaced apart from each other to form a predetermined interval so that the tilting space of the leaf spring 210 is easily secured.

As shown in Figure 4, the second replacement pad 220 is located on the other side of the leaf spring 210 is configured to be detachable to the leaf spring 210, the inner circumferential surface is in contact with the rotating shaft (1) do.

Here, of course, the inner circumferential surface of the second replacement pad 220 is formed in an arc shape so that the rotating shaft 1 that rotates at high speed is stably contacted.

In addition, as shown in FIG. 4, an inner circumferential surface of the second replacement pad 220 in contact with the rotation shaft 1 includes a reinforcement layer 160 having excellent hardness, abrasion resistance, and heat resistance including carbon. It is preferable to prevent the second replacement pad 220 from being abraded and damaged by friction with the rotating shaft 1 to improve the durability of the product.

Here, of course, a tin-based alloy containing scapolite or a lead-based alloy containing lead may be used as the reinforcement layer 160.

As shown in FIG. 4, the second detachment means 230 allows the second replacement pad 220 to be easily detached from the leaf spring 210.

At least one through hole 231 penetrating the inside of the leaf spring 210, a male coupler 232 having a thread 232a formed on an outer circumference thereof, and a through hole 231 formed therein; It is formed corresponding to the number of 231, the groove is formed on one side of the second replacement pad 220, the inner threaded surface of the groove coupled to the screw thread (232a) of the male coupling member 232 ( 233a) is configured to include a female assembly 233 is formed.

That is, if the replacement is required due to the wear and damage due to the characteristics of the bearing that is in contact with the rotating shaft rotating at high speed during long-term use wear and damage, the tilting pad 100 of the bearing practical replacement of the present invention belongs to a part Since only the second replacement pad 220 can be easily replaced and reused, the replacement is easy and there is an advantage of reducing the replacement cost.

As shown in FIG. 4, both ends of the leaf spring 210 may be inserted into the second insertion groove 240 so that the leaf spring 210 is fixed in the casing 2. 2) Two are to be formed on the inner circumferential surface.

As shown in FIG. 4, the second tilting means 250 is positioned between the casing 2 and the leaf spring 210 to elastically support the leaf spring 210 to be stably tilted.

A second elastic member 251 positioned between the casing 2 and the leaf spring 210 to elastically support the leaf spring 210, and an inner circumferential surface of the casing 2; The third settling groove 252 is inserted into one end of the second elastic member 251 and formed on one outer surface of the leaf spring 210, the other end of the second elastic member 251 is placed It is configured to include four settling groove 253.

That is, the abnormal vibration of the rotation shaft 1 is induced by inducing a gentle tilting of the second replacement pad 210 in contact with the rotation shaft 1 where shaking or abnormal vibration occurs due to the excellent elastic force of the second elastic member 251. This has the advantage of being stably reduced.

Here, it is preferable to use a spring or rubber having elasticity as the second elastic member 251.

Tilting pad 100 of the bearing practical replacement according to an embodiment of the present invention having the configuration as described above is used to install and replace as follows.

First, as shown in FIG. 5A, both ends of the fixing pad 110 are inserted into two first insertion grooves 140 formed on the inner circumferential surface of the casing 2, and then the fixing protrusions formed on the fixing pad 110 are formed. 131 by sliding so that the fixing groove 132 formed in the first replacement pad 120 is inserted so that the fixing pad 110 and the first replacement pad 120 are firmly coupled and fixed to each other to replace the bearing of the present invention. Tilt pad 100 is installed on the inner circumferential surface of the casing (2).

Here, as shown in FIG. 5B, three tilting pads 100 are formed on the inner circumferential surface of the casing 2 at equidistant intervals for the replacement of the present invention, which is practically used. Of course not.

As described above, when the tilting pad 100 of the bearing which is practical to replace the present invention is installed on the inner circumferential surface of the casing 2, the rotating shaft 1 that rotates at a high speed therein is used as shown in FIG. 5B.

At this time, when the first replacement pad 120 is worn and damaged due to long-term friction with the rotating shaft 1 rotating at a high speed, only the first replacement pad 120 is separated, and then shown in FIG. 5C. As described above, the new first replacement pad 120 can be used by simply binding again, thereby making it easy to replace and reducing the replacement cost.

Although the present invention has been described with reference to the embodiments illustrated in the accompanying drawings, this is by way of example and not limited to the above-described embodiments, various modifications and equivalent embodiments are possible from those skilled in the art. You will understand the point. In addition, modifications by those skilled in the art can be made without departing from the scope of the present invention. Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and their technical spirit.

1. Rotating shaft 2. Casing
100. Tilting pads of bearings for practical replacement
110. Retention pad 120. First replacement pad
130. First detachable means 131. Fixing protrusion
132. Locking groove 140. First inserting groove
150. First tilting means 151. First elastic member
152. First Settling Home 153. Second Settling Home
160. Reinforcement layer 210. Leaf spring
220. Second replacement pad 230. Second detachable means
231. Through-holes 232. Male assembly
232a, 233a. Thread 233. Female Combined
240. Second insertion groove 250. Second tilting means
241. Second elastic member 252. Third settling groove
253. Fourth Settlement Home

Claims (7)

It is coupled to the inner circumferential surface of the casing (2) to support the rotating shaft (1) while tilting while supporting the rotating shaft (1) penetrating therein to stably reduce the shaking, shaking or abnormal vibration of the rotating shaft (1). In the tilting pad of the bearing is formed on the inner circumferential surface of the casing (2) at equal intervals,
Positioned inside the casing (2), one outer circumference has an arc (弧) shape, one outer circumference fixing pad 110 is spaced apart from the inner circumferential surface of the casing (2);
Located on the other side of the fixing pad 110 is configured to be detachable to the fixing pad 110, the inner peripheral surface of the first replacement pad 120 in contact with the rotating shaft (1);
First detaching means (130) for easily detaching the first replacement pad (120) to the fixing pad (110);
Two first insertion grooves 140 formed at inner circumferential surfaces of the casing 2 so that both ends of the fixing pad 110 are inserted to fix the fixing pad 110 in the casing 2; And
And a first tilting means (150) positioned between the casing (2) and the fixing pad (110) to elastically support the fixing pad (110) to be stably tilted. Tilting pads in practical bearings.
The method of claim 1,
The first detachable means 130,
At least one fixing protrusion 131 formed on the other outer surface of the fixing pad 110;
It is formed corresponding to the number of fixing protrusions 131 of the fixing pad 130, at least one fixing groove formed on one side of the first replacement pad 110 so that the fixing protrusion 131 is inserted ( 132) Tilting pad of the bearing is practical, characterized in that it comprises a.
The method of claim 1,
The first tilting means 150,
A first elastic member 151 positioned between the casing 2 and the fixing pad 110 to elastically support the fixing pad 110;
A first settling groove 152 formed on an inner circumferential surface of the casing 2 and having one end of the first elastic member 151 inserted therein;
Is formed on the outer surface of one side of the fixing pad 110, and comprises a second set groove 152 is inserted into the other end of the first elastic member 151,
Tilting pad of the bearing is practical replacement, characterized in that the elastic spring or rubber is used as the first elastic member (151).
It is coupled to the inner circumferential surface of the casing (2) to support the rotating shaft (1) while tilting while supporting the rotating shaft (1) penetrating therein to stably reduce the shaking, shaking or abnormal vibration of the rotating shaft (1). In the tilting pad of the bearing is formed on the inner circumferential surface of the casing (2) at equal intervals,
A leaf spring positioned inside the casing 2 and having elasticity, and one side of the casing 2 adjacent to the inner circumferential surface of the casing 2 is spaced apart from the inner circumferential surface of the casing 2;
Located on the other side of the leaf spring 210 is configured to be detachable to the leaf spring 210, the inner peripheral surface of the second replacement pad 220 in contact with the rotating shaft (1);
Second detachment means (230) for easily detaching the second replacement pad (220) to the leaf spring (210);
Two second insertion grooves 240 formed at inner circumferential surfaces of the casing 2 such that both ends of the leaf spring 210 are inserted to fix the leaf spring 210 to the casing 2; And
And a second tilting means (250) positioned between the casing (2) and the leaf spring (210) to elastically support the leaf spring (210) to be stably tilted. Tilting pads in practical bearings.
The method of claim 4, wherein
The second detachable means 230,
At least one through hole 231 penetrating the inside of the leaf spring 210;
A male coupling member 232 penetrating through the through hole 231 and having a thread 232a formed on an outer circumferential surface thereof;
It is formed corresponding to the number of the through holes 231, the groove is formed on one side of the second replacement pad 220, the inner peripheral surface of the groove is fastened with the screw thread 232a of the male coupler 232 Tilting pad of the bearing is practical, characterized in that it comprises a female assembly 233 is formed a screw thread (233a) is formed.
The method of claim 4, wherein
The second tilting means 250,
A second elastic member 251 positioned between the casing 2 and the leaf spring 210 to elastically support the leaf spring 210;
A third settling groove 252 formed on an inner circumferential surface of the casing 2 and having one end of the second elastic member 251 inserted therein;
Is formed on the outer surface of one side of the leaf spring 210, the other end of the second elastic member 251 is configured to include a fourth settling groove 253 is inserted,
As the second elastic member 251, a spring or rubber having elasticity is used.
The method according to claim 1 or 4,
On the inner circumferential surfaces of the first replacement pad 120 and the second replacement pad 220 in contact with the rotary shaft 1, a reinforcement layer 160 including carbon is laminated to form the rotary shaft 1. Tilting pad of the bearing is practical replacement, characterized in that to prevent the first replacement pad (120) and the second replacement pad (220) is worn and damaged due to the friction of the.

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