CN211648780U - Tilting pad sliding bearing and rotor assembly - Google Patents
Tilting pad sliding bearing and rotor assembly Download PDFInfo
- Publication number
- CN211648780U CN211648780U CN201921369182.4U CN201921369182U CN211648780U CN 211648780 U CN211648780 U CN 211648780U CN 201921369182 U CN201921369182 U CN 201921369182U CN 211648780 U CN211648780 U CN 211648780U
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- China
- Prior art keywords
- tilting pad
- tilting
- unfilled corner
- sliding bearing
- bearing
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Abstract
The utility model relates to the technical field of bearings, and discloses a tilting pad sliding bearing and a rotor assembly, wherein the tilting pad sliding bearing comprises a bearing body with an inner hole, a plurality of tilting pads are arranged in the inner hole along the circumferential direction, one axial end of the back of all the tilting pads is provided with an unfilled corner, and the other axial end of the back of the tilting pads is provided with an unfilled corner; the section of the unfilled corner on the back of the tilting pad is arc-shaped, or the section of the unfilled corner on the back of the tilting pad is triangular, the included angle between the bevel edge of the triangle and the axial direction is 2-3 degrees, and the shapes and the sizes of all the tilting pads are the same. The utility model discloses a tilting pad of tilting pad slide bearing not only can do the small amplitude swing in week, can also produce the incline in the axial, and tilting pad can be adjusted by oneself along with the incline of pivot like this to guarantee that the holding surface of tilting pad contacts with the pivot large tracts of land all the time, ensure the safe and stable operation of tilting pad slide bearing's result of use and pivot.
Description
Technical Field
The utility model relates to a bearing technical field, more specifically relate to a tilting pad slide bearing and a rotor subassembly that says so.
Background
Tilting pad sliding bearings are widely used as bearings in mechanical equipment, especially in machines with high-speed or ultra-high-speed rotors, and in order to reduce friction and improve transmission efficiency, the tilting pad sliding bearings are required to be out of contact with the rotor journal and have a certain clearance so as to form a dynamic pressure oil film. The tilting pad sliding bearing has good stability and high bearing capacity.
The tilting pad of the prior art tilting pad sliding bearing generally has unfilled corners at two circumferential ends of the back, for example, the unfilled corners are formed by chamfering or fillet process, so that the tilting pad can make small amplitude swing in the circumferential direction. For example, a tilting pad radial bearing with adjustable rigidity and multiple oil wedges is disclosed in the chinese utility model with application number 201220324924.3.
The tilting pad in the tilting pad sliding bearing similar to the aforementioned disclosure can only swing in the circumferential direction, but when the rotor is deflected in the axis due to load deformation, manufacturing, installation and other factors, as shown in fig. 1, the tilting pad and the rotating shaft 9 are brought into point contact at a and b, which affects the use effect of the bearing and the stable operation of the rotating shaft.
SUMMERY OF THE UTILITY MODEL
The utility model provides an overcome not enough among the above-mentioned prior art, provide a tilting pad slide bearing and a rotor subassembly.
The utility model discloses a following technical scheme realizes above-mentioned purpose.
A tilting pad sliding bearing comprises a bearing body with an inner hole, wherein a plurality of tilting pads are arranged in the inner hole along the circumferential direction, and unfilled corners are arranged at one axial end of the back of each tilting pad.
The scheme is obtained by improving the existing tilting pad sliding bearing. The tilting pad of current tilting pad slide bearing can do the minor oscillation in circumference, this scheme is through setting up the unfilled corner in the axial one end department at the back of tilting pad, make the tilting pad not only can do the minor oscillation in circumference, but also can produce the incline in the axial, install when the axis deflection takes place for the pivot on the tilting pad slide bearing of this scheme like this, the tilting pad can be along with the incline of pivot and self-adjusting, thereby guarantee that the holding surface of tilting pad contacts with the pivot large tracts of land all the time, ensure the safe and stable operation of tilting pad slide bearing's result of use and pivot.
As a further improved structural form, the other end in the axial direction of the back of the tilting pad is provided with a notch.
As a further improved form of construction, all of the tilt pads are of the same shape and size and are uniformly arranged in the inner bore.
As a further improved structure form, the bearing body is formed by buckling two half bearing bodies.
As a further improved structure form, an oil nozzle is arranged between adjacent tilting pads and fixed on the bearing body.
As a further improved structure, the broken corner of the back surface of the tilting pad has a circular arc-shaped section, and the shapes and the sizes of all the tilting pads are the same.
As another improved structure form, the section of the unfilled corner on the back surface of the tilting pad is triangular, the included angle between the inclined edge of the triangle and the axial direction is 2-3 degrees, and the shapes and the sizes of all the tilting pads are the same.
The utility model provides a rotor subassembly, including pivot and foretell tilting pad slide bearing that tilting pad piece that one end has the unfilled corner is equipped with, two tilting pad slide bearings arrange in pairs and tilting pad piece has the one end of unfilled corner all to be located the axial outside, and two tilting pad slide bearings are passed in the pivot.
The utility model discloses still introduce another kind of rotor subassembly, including pivot and foretell tilting pad slide bearing that tilting pad piece that both ends have the unfilled corner is equipped with, two tilting pad slide bearings arrange in pairs, and two tilting pad slide bearings are passed in the pivot.
Compared with the prior art, the utility model following beneficial effect mainly has: the utility model discloses a tilting pad of tilting pad slide bearing not only can do the small amplitude swing in week, can also produce the incline in the axial, and tilting pad can be adjusted by oneself along with the incline of pivot like this to guarantee that the holding surface of tilting pad contacts with the pivot large tracts of land all the time, ensure the safe and stable operation of tilting pad slide bearing's result of use and pivot.
Drawings
Fig. 1 is a schematic structural diagram of a prior art point contact between a rotating shaft and a tilting pad sliding bearing when the rotating shaft deflects.
Fig. 2 is a schematic view of a radial cross-sectional structure according to a first embodiment of the present invention.
Fig. 3 is a schematic axial sectional structure diagram according to a first embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view illustrating a rotor assembly according to a second embodiment of the present invention when a rotating shaft is deflected.
Fig. 5 is a schematic axial sectional structure diagram of a third embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view illustrating a rotor assembly according to a fourth embodiment of the present invention when a rotating shaft is deflected.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings. The drawings are for illustrative purposes only and are not to be construed as limiting the patent.
In order to explain the embodiment more simply, some parts which are known to those skilled in the art in the drawings or description but are not relevant to the main content of the present invention will be omitted. In addition, some components in the drawings may be omitted, enlarged or reduced for convenience of description, but do not represent the size or the entire structure of an actual product.
The first embodiment is as follows:
as shown in fig. 2, the tilting pad sliding bearing comprises a bearing body 1 with an inner hole, wherein the bearing body 1 is formed by buckling a first half bearing body 11 and a second half bearing body 12, and five tilting pad blocks 2 are uniformly arranged in the inner hole along the circumferential direction. An oil nozzle 3 is arranged between the adjacent tilting pads 2, and the oil nozzle 3 is respectively fixed on the first half bearing body 11 and the second half bearing body 12.
The back of each tilting pad 2 is provided with a pin hole 21, the first half bearing body 11 is provided with two threaded holes 13, the second half bearing body 12 is provided with three threaded holes 13, the threaded holes 13 are internally threaded with screws 4 with cylindrical ends 41, the screws 4 penetrate through the threaded holes 13, then the cylindrical bodies 41 of the screws 4 are inserted into the pin holes 21 of the tilting pads 2, and gaps are reserved between the cylindrical bodies 41 of the screws 4 and the pin holes 21.
As shown in fig. 2 and 3, a first unfilled corner 22 is provided at one axial end of the back of the tilt pad 2, the cross section of the first unfilled corner 22 is a triangle, the included angle α between the hypotenuse of the triangle and the axial direction is 2 °, and the included angle may be 3 ° in other embodiments. The first unfilled corner 22 of the tilt pad 2 of the present embodiment can be formed by a chamfering process. All tilt pads 2 in this embodiment are identical in shape and size. In other embodiments, the first unfilled corner 22 on the back surface of the tilt pad 2 may also have a circular arc-shaped cross-section.
The embodiment is obtained by improving the prior tilting pad sliding bearing. The tilting pad of the existing tilting pad sliding bearing can swing slightly in the circumferential direction, and in this embodiment, the triangular first unfilled corner 22 is arranged at one end of the back of the tilting pad 2 in the axial direction, so that the tilting pad 2 can not only swing slightly in the circumferential direction, but also deflect in the axial direction, and when the axis of the rotating shaft 5 mounted on the tilting pad sliding bearing of this embodiment deflects, the tilting pad 2 can be adjusted by itself along with the deflection of the rotating shaft 5, thereby ensuring that the supporting surface of the tilting pad 2 is always in large-area contact with the rotating shaft 5, and ensuring the use effect of the tilting pad sliding bearing and the safe and stable operation of the rotating shaft 5. In addition, the first unfilled corner 22 is only a small part relative to the tilt pad 2, and does not affect the contact support of the back of the tilt pad 2 and the inner hole of the bearing body.
Example two:
as shown in fig. 4, the present embodiment describes a rotor assembly using the tilting pad sliding bearing of the first embodiment, which includes a rotating shaft 5 and the tilting pad sliding bearing of the first embodiment, wherein the two tilting pad sliding bearings are arranged in pairs, and one end of the tilting pad 2 having the first unfilled corner 22 is located axially outward, and the rotating shaft 5 penetrates through the two tilting pad sliding bearings.
In practical application, the deflection of the rotor generally has only one direction, and a certain gap is formed between the journal of the rotating shaft and the tilting pad, so that the tilting pad of the two tilting pad sliding bearings can meet the use requirement only by arranging one end with a notch, but the installation needs to pay attention to the direction of the tilting pad sliding bearing.
Example three:
the embodiment is obtained by improving on the basis of the first embodiment. As shown in fig. 5, the tilting pad sliding bearing of the present embodiment is different from the first embodiment in that a second unfilled corner 23 is further provided at the other end in the axial direction of the back portion of the tilting pad 2 in the present embodiment, the shape and the size of the second unfilled corner 23 are the same as those of the first unfilled corner 22, and the second unfilled corner 23 can also be formed by chamfering.
The axial both ends of the back of the tilting pad 2 of the tilting pad sliding bearing of the embodiment are provided with the unfilled corner, so that when the tilting pad sliding bearing is used in pairs, the problem of the installation direction can be avoided, the assembly is convenient, the maintenance and the replacement are convenient, and the like.
Example four:
as shown in fig. 6, the present embodiment describes a rotor assembly using the tilting pad sliding bearing of the third embodiment, which includes a rotating shaft 6 and the tilting pad sliding bearing of the third embodiment, two tilting pad sliding bearings are arranged in pairs, and the rotating shaft 6 passes through the two tilting pad sliding bearings.
The above is only four concrete embodiments of the utility model, but the design concept of the utility model is not limited to this, the all use the design concept of the utility model is right the insubstantial modification made by the utility model all falls into the protection scope of the utility model.
Claims (2)
1. A tilting pad sliding bearing comprises a bearing body with an inner hole, wherein a plurality of tilting pads are arranged in the inner hole along the circumferential direction, and the tilting pad sliding bearing is characterized in that a notch angle is arranged at one axial end of the back of each tilting pad, and a notch angle is arranged at the other axial end of the back of each tilting pad; the section of the unfilled corner on the back of the tilting pad is arc-shaped, or the section of the unfilled corner on the back of the tilting pad is triangular, the inclined edge of the triangle and the axial included angle are 2-3 degrees, and the shapes and the sizes of all the tilting pads are the same.
2. A rotor assembly comprising a shaft and two tilting pad slide bearings according to claim 1, the two tilting pad slide bearings being arranged in pairs, the shaft passing through the two tilting pad slide bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369182.4U CN211648780U (en) | 2019-08-22 | 2019-08-22 | Tilting pad sliding bearing and rotor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921369182.4U CN211648780U (en) | 2019-08-22 | 2019-08-22 | Tilting pad sliding bearing and rotor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211648780U true CN211648780U (en) | 2020-10-09 |
Family
ID=72682171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921369182.4U Expired - Fee Related CN211648780U (en) | 2019-08-22 | 2019-08-22 | Tilting pad sliding bearing and rotor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211648780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803366A (en) * | 2021-09-16 | 2021-12-17 | 上海涟屹轴承科技有限公司 | Self-adaptive sliding bearing |
-
2019
- 2019-08-22 CN CN201921369182.4U patent/CN211648780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803366A (en) * | 2021-09-16 | 2021-12-17 | 上海涟屹轴承科技有限公司 | Self-adaptive sliding bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 Termination date: 20210822 |