CN116241553A

CN116241553A - Tilting pad thrust sliding bearing with adjustable fulcrum offset

Info

Publication number: CN116241553A
Application number: CN202310370562.4A
Authority: CN
Inventors: 郭富贵; 何思聪; 赵圆满; 张锋; 程楚伟; 邓勇
Original assignee: Zhejiang Zhanggui Bearing Technology Co ltd
Current assignee: Zhejiang Zhanggui Bearing Technology Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-06-09

Abstract

The invention belongs to the technical field of bearings, and particularly relates to an inclinable tile thrust sliding bearing with adjustable pivot offset, which comprises an upper bearing seat and a lower bearing seat which are arranged up and down, wherein a plurality of thrust tiles are circumferentially arranged on the upper bearing seat; the upper bearing frame is last to have the first spout that runs through the setting from top to bottom, and the quantity and the thrust pad quantity of first spout are unanimous to along circumference direction evenly distributed, thrust slide bearing still includes: the plurality of support pieces are arranged, the lower ends of the support pieces are arranged on the lower bearing seat, and the upper ends of the support pieces penetrate through the first sliding grooves and are connected with the thrust pad; the fixing piece is detachably arranged between the upper bearing seat and the lower bearing seat and used for fixing the upper bearing seat and the lower bearing seat; when the fixing piece is separated from the lower bearing seat, circumferential rotation can be carried out between the upper bearing seat and the lower bearing seat along the length direction of the first sliding groove. Through setting up first spout and mounting, can realize the regulation of bearing fulcrum offset.

Description

Tilting pad thrust sliding bearing with adjustable fulcrum offset

Technical Field

The invention belongs to the technical field of bearings, and particularly relates to an inclinable tile thrust sliding bearing with an adjustable fulcrum offset.

Background

Compared with a fixed oil wedge thrust sliding bearing, the tilting pad thrust sliding bearing with the same size can bear larger thrust load, and is widely applied to equipment such as water pumps, steam turbines, fans, compressors and the like which rotate at high speed and have larger thrust load.

As shown in FIG. 1, the ratio of the included angle θp between the pad fulcrum and the pad inlet side of the tilting pad thrust sliding bearing and the wrap angle θo of the pad is called as a deflection coefficient, the design value range of the deflection coefficient is 0.5-0.65, and the tilting pad thrust sliding bearing with the center support is called as a center support when the deflection coefficient is 0.5, and the tilting pad thrust sliding bearing with the center support can be suitable for a bidirectional rotation working condition; when the offset coefficient is greater than 0.5, the offset bearing is called as an offset bearing, and the tilting pad thrust sliding bearing of the offset bearing is only suitable for a unidirectional rotation working condition. The centrally supported bearings require less oil and less friction loss than the offset bearings, but have less load carrying capacity.

Therefore, under the same size, the bearing capacity of the offset bearing is larger, and the bearing capacity of the bearing is increased along with the increase of the offset coefficient, but the oil demand and the friction power consumption of the bearing are also increased along with the increase of the offset coefficient.

At present, the offset coefficient of the tilting pad thrust sliding bearing designed and manufactured by each bearing manufacturer is not adjustable in fixed value, and one set of bearing cannot be changed in use after the pad offset coefficient is determined, so that the application range of the use working condition of the bearing is limited.

Disclosure of Invention

The invention aims to provide an adjustable tilting pad thrust sliding bearing with a pivot offset, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the tilting pad thrust sliding bearing with the adjustable pivot offset comprises an upper bearing seat and a lower bearing seat which are arranged up and down, wherein a plurality of thrust pads are circumferentially arranged on the upper bearing seat; the upper bearing seat is provided with a first sliding groove which is vertically penetrated, the number of the first sliding grooves is consistent with that of the thrust pads, the first sliding grooves are uniformly distributed along the circumferential direction, and the thrust sliding bearing further comprises:

the plurality of support pieces are arranged, the lower ends of the support pieces are arranged on the lower bearing seat, and the upper ends of the support pieces penetrate through the first sliding grooves and are connected with the thrust pad;

the fixing piece is detachably arranged between the upper bearing seat and the lower bearing seat and used for fixing the upper bearing seat and the lower bearing seat;

when the fixing piece is separated from the lower bearing seat, circumferential rotation can be carried out between the upper bearing seat and the lower bearing seat along the length direction of the first sliding groove.

In the above technical scheme, further, the lower bearing seat is provided with a second chute which is vertically arranged in a penetrating manner; a second limiting groove is formed in the bottom of the lower bearing seat, and the second sliding groove is positioned in the second limiting groove; the fixing member includes:

the large end part of the T-shaped locking sleeve is positioned in the second limiting groove, and the small end part of the T-shaped locking sleeve is positioned in the second sliding groove;

and the screw rod part of the bolt penetrates through the upper bearing seat and is in threaded connection with the T-shaped locking sleeve.

In any of the above technical solutions, further, an adjusting gasket is provided at the bottom of the lower bearing seat, and the adjusting gasket is fixed on the lower bearing seat through a screw.

In any of the foregoing solutions, further, the support member includes:

the lower end of the ball head support is arranged on the lower bearing seat, and the upper end of the ball head support penetrates through the first sliding groove;

and the bottom of the pivot is connected with the top of the ball stud, and the top of the pivot is connected with the bottom of the thrust pad.

In any of the above technical solutions, further, a first limit groove is provided at the bottom of the upper bearing seat, the number of the first limit grooves is consistent with the number of the first sliding grooves, the first sliding grooves are located in the first limit groove, a mounting groove is provided on the lower bearing seat, a limit flange is provided on the ball head support and is radially and outwardly arranged, the lower end of the ball head support is embedded in the mounting groove, and the limit flange is clamped in the first limit groove.

In any of the above technical solutions, further, the outer circle of the upper bearing seat is provided with scale marks arranged along the circumferential direction, and the lower bearing seat is provided with a datum line corresponding to the scale marks. The interval of the graduation marks is 5 degrees.

In any of the above technical solutions, further, fulcrum holes are provided on the upper bearing seat and the lower bearing seat.

In any of the above technical solutions, further, the thrust sliding bearing further includes a plurality of oil nozzles, and the oil nozzles are respectively disposed between adjacent tiles.

The beneficial effects of the invention are as follows: based on some tilting pad thrust sliding bearings at present, the offset coefficient is not adjustable, for this reason be provided with first spout on the bolster, support piece is used for connecting bolster and bolster, consequently with support piece gliding setting on first spout for can relative rotation between bolster and the bolster, after rotating, the offset coefficient of bearing has changed promptly, of course, for the stability of guarantee bearing at the during operation, for this reason still is provided with the mounting, fixes bolster and bolster through detachable mounting. When the deflection coefficient is required to be adjusted, the fixing piece is only required to be taken down, and the fixing piece is installed after the adjustment is finished, so that the method is very convenient.

Drawings

FIG. 1 is a schematic diagram of a prior art tile;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is a schematic view of the bottom construction of the present invention;

FIG. 6 is a schematic view of the internal structure of the present invention;

reference numerals: 100. an upper bearing seat; 110. a first chute; 120. a first limit groove; 130. scale marks; 140. a fulcrum hole; 200. a lower bearing seat; 210. a second chute; 220. the second limit groove; 230. a reference line; 300. a thrust pad; 400. a support; 410. ball head support; 411. a limit flange; 420. a pivot; 500. a fixing member; 510. a T-shaped locking sleeve; 520. a bolt; 600. adjusting the gasket; 700. and an oil nozzle.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

as shown in fig. 2-6, the present embodiment provides a tilting pad thrust sliding bearing with adjustable pivot offset, which includes an upper bearing seat 100 and a lower bearing seat 200 that are disposed up and down, wherein a plurality of thrust pads 300 are disposed circumferentially on the upper bearing seat 100; the upper bearing seat 100 is provided with a first chute 110 penetrating from top to bottom, the number of the first chute 110 is consistent with the number of the thrust pads 300, and the first chute is uniformly distributed along the circumferential direction, and the thrust sliding bearing further comprises:

the plurality of support members 400 are provided, the lower ends of which are arranged on the lower bearing seat 200, and the upper ends of which pass through the first sliding groove 110 and are connected with the thrust pad 300;

the fixing piece 500 is detachably arranged between the upper bearing seat 100 and the lower bearing seat 200 and is used for fixing the upper bearing seat 100 and the lower bearing seat 200;

when the fixing member 500 is separated from the lower bearing housing 200, the upper bearing housing 100 and the lower bearing housing 200 can rotate circumferentially along the length direction of the first chute 110.

The thrust sliding bearing further comprises a plurality of oil spray nozzles 700 which are respectively arranged between adjacent tiles, wherein the oil spray nozzles 700 are used for providing lubricating oil for the bearing and connecting the adjacent tiles.

In this technical scheme, based on some tilting pad thrust sliding bearings at present, its off-set coefficient is the fixed value and is not adjustable, for this reason be provided with first spout 110 on bolster 100, support 400 is used for connecting bolster 100 and bolster 200, consequently with support 400 slidable setting on first spout 110 for can relative rotation between bolster 100 and bolster 200, after the rotation, the off-set coefficient of bearing has changed promptly, of course, in order to ensure the stability of bearing at the during operation, still be provided with mounting 500, fix bolster 100 and bolster 200 through detachable mounting 500. When the deflection coefficient needs to be adjusted, the fixing piece 500 is only required to be taken down, and after the adjustment is finished, the fixing piece 500 is installed, so that the method is very convenient.

To improve the stability of the upper and

lower bearing housings

100 and 200, a plurality of fixing members 500 may be provided in the circumferential direction for this purpose, and the connection strength is improved by the plurality of fixing members 500.

Example 2:

the present embodiment provides a tilting pad thrust sliding bearing with an adjustable fulcrum offset, which has the following technical features in addition to the technical scheme of the above embodiment.

As shown in fig. 4, in the present embodiment, the lower bearing seat 200 has a second chute 210 penetrating therethrough; a second limiting groove 220 is formed in the bottom of the lower bearing seat 200, and the second sliding groove 210 is located in the second limiting groove 220; the fixing member 500 includes:

the large end of the T-shaped locking sleeve 510 is positioned in the second limiting groove 220, and the small end of the T-shaped locking sleeve 510 is positioned in the second sliding groove 210;

and a bolt 520, wherein a screw portion of the bolt 520 passes through the upper bearing housing 100 and is in threaded connection with the T-shaped locking sleeve 510.

In this technical solution, regarding the fixing member 500, for convenience in adjustment, a T-shaped locking sleeve 510 is designed, the T-shaped locking sleeve 510 is integrally configured as a nut structure with a small upper end and a large lower end, and is disposed in the second chute 210 and the second limiting groove 220 of the lower bearing seat 200, the second chute 210 is consistent with the length direction of the first chute 110, the T-shaped locking sleeve 510 can slide in the second chute 210 and the second limiting groove 220, a bolt 520 is disposed on the upper bearing seat 100, the bolt 520 passes through the upper bearing seat 100 and is in threaded connection with the T-shaped locking sleeve 510, after the bolt 520 is screwed, the head of the bolt 520 abuts against the upper end surface of the upper bearing seat 100, and the large end of the T-shaped locking sleeve 510 abuts against the bottom of the second limiting groove 220, so that the upper bearing seat 100 and the lower bearing seat 200 cannot be rotated, and when rotation is required, the bolt 520 is unscrewed, the T-shaped locking sleeve 510 can be loosened in the second limiting groove 220, and can be rotated, thus being very convenient, and the fixing member 500 can be completely adjusted without taking down.

As shown in fig. 5, in the present embodiment, preferably, an adjusting washer 600 is disposed at the bottom of the lower bearing housing 200, and the adjusting washer 600 is fixed to the lower bearing housing 200 by a screw.

In this technical solution, after the adjustment gasket 600 is disposed, the installation of the T-shaped locking sleeve 510 is facilitated, that is, the T-shaped locking sleeve 510 is installed on the second limiting groove 220 and the second sliding groove 210 from bottom to top, and then the adjustment gasket 600 is installed on the lower bearing seat 200 by using screws.

Example 3:

As shown in fig. 3, in the present embodiment, the support 400 includes:

the lower end of the ball pillar 410 is arranged on the lower bearing seat 200, and the upper end of the ball pillar 410 passes through the first chute 110;

and a pivot 420, wherein the bottom of the pivot 420 is connected to the top of the ball stud 410, and the top thereof is connected to the bottom of the thrust pad 300.

The bottom of the upper bearing seat 100 is provided with first limit grooves 120, the number of the first limit grooves 120 is consistent with that of the first sliding grooves 110, the first sliding grooves 110 are located in the first limit grooves 120, the lower bearing seat 200 is provided with mounting grooves, the ball head support 410 is provided with limit flanges 411 which are arranged radially outwards, the lower ends of the ball head support 410 are embedded in the mounting grooves, and the limit flanges 411 are clamped in the first limit grooves 120.

In this technical solution, the ball stud 410 is clamped on the lower bearing seat 200 and the upper bearing seat 100 by adopting the stepped notch, which is convenient to install and does not affect the movement of the ball stud 410.

Example 4:

As shown in fig. 2 and 3, in the present embodiment, the outer circumference of the upper bearing housing 100 has graduation marks 130 disposed along the circumferential direction, and the lower bearing housing 200 has a reference line 230 corresponding to the graduation marks 130. The graduation marks 130 are spaced 5 apart.

In this technical scheme, regarding the adjustment between the upper bearing seat 100 and the lower bearing seat 200, for the position between the upper bearing seat 100 and the lower bearing seat 200 that can be accurately controlled, for this reason, the scale mark 130 and the reference line 230 are provided, and the interval of the scale mark 130 is set at 5 °, that is, the adjustment cell is rotated by 5 °, so, the offset coefficient of the bearing can be calculated through the angle data, and the measurement is carried out without the need of additional measuring instruments by the staff, which is very convenient.

Example 5:

As shown in fig. 2 and 3, in the present embodiment, the upper bearing housing 100 and the lower bearing housing 200 are provided with fulcrum holes 140.

In this technical scheme, regarding the adjustment between the upper bearing housing 100 and the lower bearing housing 200, in the adjustment process, when it is found that the operator directly rotates by hand, it is difficult to control the rotation angle, and for this reason, the fulcrum hole 140 is provided, the fulcrum hole 140 is a hole for the small lever to be embedded, and after the lever is inserted into the fulcrum hole 140, the upper bearing housing 100 and the lower bearing housing 200 can be rotated more conveniently and more effort-saving.

With the above-described embodiment, the adjustment of the fulcrum displacement amount of the bearing is specifically as follows: firstly, a worker rotates the bolts 520 on the upper bearing seat 100 through a spanner, makes each bolt 520 in a loose state, then takes out a rod which can be inserted into the fulcrum holes 140, inserts the rod into the fulcrum holes 140 on the upper bearing seat 100 and the lower bearing seat 200, then applies a circumferential external force to the rod to enable the rod to drive the upper bearing seat 100 and the lower bearing seat 200 to rotate relatively, at the moment, attention is required to the scale marks 130 on the upper bearing seat 100 at any moment, and after the scale marks 130 reach proper positions, the rod is taken down, and each bolt 520 on the upper bearing seat 100 is screwed down through the spanner.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. The tilting pad thrust sliding bearing with the adjustable pivot offset comprises an upper bearing seat (100) and a lower bearing seat (200) which are arranged up and down, wherein the upper bearing seat (100) is provided with a plurality of thrust pads (300) which are circumferentially arranged; the thrust sliding bearing is characterized in that first sliding grooves (110) penetrating through the upper bearing seat (100) from top to bottom are formed in the upper bearing seat (100), the number of the first sliding grooves (110) is consistent with that of the thrust pads (300), the thrust pads are uniformly distributed along the circumferential direction, and the thrust sliding bearing further comprises:

the plurality of support pieces (400) are arranged on the lower bearing seat (200) at the lower ends, and the upper ends of the support pieces penetrate through the first sliding grooves (110) and are connected with the thrust pads (300);

the fixing piece (500) is detachably arranged between the upper bearing seat (100) and the lower bearing seat (200) and is used for fixing the upper bearing seat and the lower bearing seat;

when the fixing piece (500) is separated from the lower bearing seat (200), the upper bearing seat (100) and the lower bearing seat (200) can circumferentially rotate along the length direction of the first sliding groove (110).

2. The tilting pad thrust sliding bearing with adjustable pivot offset according to claim 1, wherein the lower bearing seat (200) is provided with a second chute (210) penetrating from top to bottom; a second limiting groove (220) is formed in the bottom of the lower bearing seat (200), and the second sliding groove (210) is located in the second limiting groove (220); the fixture (500) includes:

the large end part of the T-shaped locking sleeve (510) is positioned in the second limiting groove (220), and the small end part of the T-shaped locking sleeve (510) is positioned in the second sliding groove (210);

and the screw rod part of the bolt (520) penetrates through the upper bearing seat (100) and is in threaded connection with the T-shaped locking sleeve (510).

3. The tilting pad thrust sliding bearing with adjustable pivot offset according to claim 2, wherein an adjusting washer (600) is arranged at the bottom of the lower bearing seat (200), and the adjusting washer (600) is fixed on the lower bearing seat (200) through a screw.

4. The tilting pad thrust sliding bearing with adjustable pivot point offset according to claim 2, wherein the support (400) comprises:

the lower end of the ball head support (410) is arranged on the lower bearing seat (200), and the upper end of the ball head support (410) passes through the first sliding groove (110);

and a pivot (420), wherein the bottom of the pivot (420) is connected with the top of the ball stud (410), and the top of the pivot is connected with the bottom of the thrust pad (300).

5. The tilting pad thrust sliding bearing with adjustable pivot offset according to claim 4, wherein a first limit groove (120) is formed in the bottom of the upper bearing seat (100), the number of the first limit grooves (120) is consistent with the number of the first sliding grooves (110), the first sliding grooves (110) are located in the first limit grooves (120), a mounting groove is formed in the lower bearing seat (200), a limit flange (411) which is arranged radially outwards is arranged on the ball support (410), the lower end of the ball support (410) is embedded in the mounting groove, and the limit flange (411) is clamped in the first limit groove (120).

6. The tilting pad thrust sliding bearing with adjustable pivot offset according to claim 2, wherein the outer circle of the upper bearing seat (100) is provided with graduation marks (130) arranged along the circumferential direction, and the lower bearing seat (200) is provided with a datum line (230) corresponding to the graduation marks (130).

7. A tilt pad thrust sliding bearing with adjustable pivot point offset according to claim 6, wherein the graduation marks (130) are spaced 5 ° apart.

8. The tilting pad thrust sliding bearing with adjustable pivot offset according to claim 7, wherein the upper bearing housing (100) and the lower bearing housing (200) are each provided with a pivot hole (140).

9. A tilting pad thrust sliding bearing with adjustable pivot point offset according to any of claims 1-8, further comprising a plurality of oil jets (700) disposed between adjacent pads, respectively.