CN214698769U - Tilting pad radial liquid metal bearing - Google Patents
Tilting pad radial liquid metal bearing Download PDFInfo
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- CN214698769U CN214698769U CN202121021279.3U CN202121021279U CN214698769U CN 214698769 U CN214698769 U CN 214698769U CN 202121021279 U CN202121021279 U CN 202121021279U CN 214698769 U CN214698769 U CN 214698769U
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- tilting pad
- axle sleeve
- footpath
- arc
- liquid metal
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Abstract
The utility model relates to a bearing transmission technical field, concretely relates to radial liquid metal bearing of tilting pad, including axle sleeve and footpath, the axle sleeve is located the outside in footpath, be equipped with a plurality of tilting pads between axle sleeve and the footpath, the both sides face of tilting pad is laminated with the side clearance of footpath and axle sleeve respectively, clearance between tilting pad and the footpath is greater than clearance between its and the axle sleeve, pack liquid metal in the clearance, tilting pad's space angle just can change, in the footpath rotation and variable speed process, between footpath and the tilting pad, bump takes place between tilting pad and the axle sleeve, tilting pad can self-adaptation slip, greatly reduced axle sleeve, wearing and tearing between footpath and the tilting pad, prolong the life of bearing, and set up tilting pad and footpath clearance to be greater than tilting pad and axle sleeve, ensure tilting pad when the gliding of self-adaptation, reduce with the collision of axle sleeve, the, And the abrasion is more beneficial to prolonging the service life of the shaft sleeve.
Description
Technical Field
The utility model relates to a bearing transmission technical field, concretely relates to radial liquid metal bearing of tilting pad.
Background
The rotating target X-ray tube is a high-power X-ray tube and is used in a rotating CT machine, and when the X-ray tube works, the rotating target generates X-rays under the bombardment of high-energy electrons. Only 1% of the energy is converted to X-rays and about 99% of the energy is converted to heat. In order to prevent the surface material from being ablated due to the serious heating of the electron bombardment area, a high-speed bearing is required to support the rotating target to rotate at a high speed. At the same time, the high-speed bearing should have good thermal conductivity. The liquid metal bearing adopts liquid metal as a lubricant, has the performances of low friction, high heat conduction, good electric conduction and liquid state maintenance under vacuum, and is used as an optimal scheme of a high-speed bearing in a rotary target X-ray tube.
Liquid metal bearings include radial bearings and thrust bearings. The traditional radial liquid metal bearing is provided with a shaft sleeve and a shaft diameter as shown in figure 1, a gap is formed between the shaft diameter and the shaft sleeve, and liquid metal is filled in the gap to play a lubricating role.
With the increasing power of the rotating target X-ray tube and the increasing rotating speed of the rotating target, the traditional liquid metal bearing can not meet the requirement of high-speed use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a radial liquid metal bearing of tilting pad solves current radial liquid metal bearing poor stability, can't satisfy high-speed rotatory user demand's technical problem.
The utility model discloses a following technical scheme realizes: including axle sleeve and axle footpath, the axle sleeve is located the outside of axle footpath, the axle sleeve with be equipped with a plurality of tilting pads between the axle footpath, the both sides face of tilting pad respectively with the side clearance laminating of axle footpath and axle sleeve, tilting pad with clearance between the axle footpath be greater than it with clearance between the axle sleeve forms tilting pad's space angle can the structure that changes between axle sleeve and the axle footpath.
Preferably, a plurality of through arc-shaped grooves are formed in one side face, close to the shaft diameter, of the shaft sleeve, each arc-shaped groove is arranged corresponding to each tilting pad, and each tilting pad is in clearance fit with each corresponding arc-shaped groove.
Preferably, each tilting pad is of a tile-shaped structure, and the arc length of the tilting pad close to the arc-shaped side surface of the arc-shaped groove is equal to the arc length of the arc-shaped side surface of the arc-shaped groove.
Preferably, the distance between the shaft diameter and each tilting pad is 20-30um, and the distance between each arc-shaped groove and each corresponding tilting pad is less than 20 um.
Preferably, the distance between the shaft diameter and each tilting pad is 20 um.
Preferably, each of the arcuate recesses is spaced from a corresponding one of the tilting pads by a distance of 10 um.
Preferably, the number of the tilting pads is 2-10, and each tilting pad is uniformly distributed between the shaft diameter and the shaft sleeve.
Preferably, four tilting pads are provided.
Preferably, the rotary target disc type rotary target further comprises rotary target discs, end covers and rotary shafts, wherein the rotary shafts are fixedly connected to two ends of the shaft diameter, the rotary target discs are connected to one end, far away from the shaft diameter, of the rotary shaft, the end covers are of hollow cylindrical structures, the end covers are fixedly arranged at two ends of the shaft sleeve, and each end cover is sleeved outside each corresponding rotary shaft.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model discloses a set up the tilting pad between axle footpath and axle sleeve, and tilting pad and axle footpath, set up the clearance between the axle sleeve, fill liquid metal in the clearance, the space angle of tilting pad just can change like this, in axle footpath rotation and variable speed in-process, between axle footpath and the tilting pad, bump between tilting pad and the axle sleeve, tilting pad just can the slip of adaptability, greatly reduced the axle sleeve, wearing and tearing between axle footpath and the tilting pad, the life of extension bearing, and set up the tilting pad and the clearance of axle footpath into the clearance that is greater than tilting pad and axle sleeve, when guaranteeing tilting pad in the gliding of adaptability, reduce with the collision of axle sleeve, wearing and tearing, be favorable to prolonging the life of axle sleeve more.
(2) The tilting pad is provided with a plurality of arc grooves corresponding to the tilting pads, and the tilting pads are close to the arc length of the arc side surface of the arc groove is equal to or basically equal to the arc length of the arc side surface of the arc groove, so that the maximum attaching area of the tilting pads and the arc groove can be ensured, the large bearing capacity of the bearing can be ensured to the maximum extent, meanwhile, the abrasion between the tilting pads and the shaft sleeve is minimized, and the service life of the tilting pads and the shaft sleeve is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a plan view of a shaft sleeve and a shaft diameter of a conventional radial liquid metal bearing.
Fig. 2 is a plan view of the shaft sleeve and the shaft diameter in the present invention.
Fig. 3 is a schematic view of the state of the middle tilting pad sliding between the shaft sleeve and the shaft diameter.
Fig. 4 is a schematic perspective view of the present invention.
Fig. 5 is a schematic view of the three-dimensional structure of the shaft sleeve, the tilting pad, the shaft diameter, and the rotation shaft of the present invention.
Fig. 6 is a schematic view of the three-dimensional structure of the shaft sleeve and the tilting pad of the present invention.
Fig. 7 is a schematic structural view of the tilting pad.
In the figure: 1 shaft sleeve, 2 shaft diameters, 3 tilting pads, 4 arc grooves, 6 rotating shafts and 7 end covers.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
a radial liquid metal bearing of tilting pad 3, includes axle sleeve 1 and axle diameter 2, axle diameter 2 is the cylinder structure, axle sleeve 1 is the tubular structure, axle sleeve 1 cover is in the outside of axle diameter 2, and have certain clearance between the relative medial surface of axle diameter 2 and axle sleeve 1 be equipped with a plurality of tilting pads 3 between axle sleeve 1 and the axle diameter 2, the concrete quantity of tilting pads 3 can be adjusted according to the actual need, set up 2-10 tilting pads 3 in the utility model, preferably set up 4, tilting pads 3 are the tile sheet structure, and the cross-section at its both ends is crescent, and both sides are arc structure, a side of tilting pads 3 and the structure of the arc lateral surface of axle diameter 2 suit, and the clearance laminating, corresponding, another relative side of tilting pads 3 suits with the medial surface structure of axle sleeve 1, and the clearance is laminated, here the medial surface of axle sleeve 1 is the side opposite to lateral surface of axle diameter 2 promptly, and each position on the side of tilting pad 3 is equal with the clearance of the lateral surface of axle diameter 2, and each position on the another side of tilting pad 3 is equal with the clearance of axle sleeve 1 medial surface, just the clearance between tilting pad 3 and axle diameter 2 be greater than it with the clearance between axle sleeve 1, fill liquid metal between axle sleeve 1 and the axle diameter 2, the space angle of tilting pad 3 can change between axle sleeve 1 and axle diameter 2, form the structure that tilting pad 3 slided along with the change of axle diameter 2 rotational speed adaptively.
Example 2:
in this embodiment, an improvement is made on the basis of embodiment 1, a plurality of through arc-shaped grooves 4 are formed in one side surface of the shaft sleeve 1, which is close to the shaft diameter 2, each arc-shaped groove 4 is correspondingly provided with one tilting pad 3, and each tilting pad 3 is in clearance fit with each corresponding arc-shaped groove 4 in the manner as described in embodiment 1, and in order to increase the bearing capacity of the bearing and ensure that the wear of the tilting pad 3 and the shaft sleeve 1 is minimized, the arc-shaped side surface of the tilting pad 3 and the side surface of the arc-shaped groove 4 need to be fitted to the greatest extent and to the greatest area, so that the arc length of the arc-shaped side surface of the tilting pad 3, which is close to the arc-shaped groove 4, is substantially equal to or equal to the arc length of the arc-shaped side surface of the arc-shaped groove 4.
The number of arc recess 4 can set up according to the number of tilting pad 3, sets up 4 arc recesses 4 in this embodiment, and each arc recess 4 evenly distributed is on axle sleeve 1, ensures that each tilting pad 3 evenly distributed between axle sleeve 1 and axle footpath 2 to guarantee that axle footpath 2 is in the rotation in-process, axle footpath 2, each position of axle sleeve 1 and tilting pad 3's effort keeps the even state.
In addition, the lateral surface of axle footpath 2 with the perpendicular interval between the side of tilting pad 3 sets up to 20-30um, if can set up to 20um, 25um, 30um, preferably is 20um, and the perpendicular interval between the side of each arc recess 4 and the corresponding side of each tilting pad 3 is less than 20um if can set up to 18 um, 15 um, 12 um, 10um, preferably sets up to 10 um.
The bearing further comprises a rotary target disc, end covers 7 and rotary shafts 6, wherein the rotary shafts 6 are fixedly connected with two ends of the shaft diameter 22, the rotary target disc is connected with one of the rotary shafts 6 and is far away from one end of the shaft diameter 22, the other rotary shaft 6 is far away from one end of the shaft diameter 22 and is externally connected with a motor, the end covers 7 are of a hollow thin cylindrical structure, the end covers 7 are fixedly arranged at two ends of the shaft sleeve 11, the outer diameter of each end cover 7 is equal to the outer diameter of the shaft sleeve 11, and each end cover 7 is sleeved on the corresponding outer portion of each rotary shaft 6.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A radial liquid metal bearing of tilting pad, includes axle sleeve (1) and footpath (2), axle sleeve (1) is located the outside of footpath (2), its characterized in that: the utility model discloses a tilting pad, including axle sleeve (1), axle sleeve (2), tilting pad (3), tilting pad's (3) both sides face respectively with the side clearance laminating of axle footpath (2) and axle sleeve (1), tilting pad (3) with the clearance between the axle footpath (2) be greater than it with clearance between axle sleeve (1), form the space angle of tilting pad (3) can be in the structure that changes between axle sleeve (1) and the axle footpath (2).
2. A radial tilting pad liquid metal bearing according to claim 1 wherein: a plurality of through arc-shaped grooves (4) are formed in one side face, close to the shaft diameter (2), of the shaft sleeve (1), each arc-shaped groove (4) is arranged corresponding to each tilting pad (3), and each tilting pad (3) is in clearance fit with each corresponding arc-shaped groove (4).
3. A radial tilting pad liquid metal bearing according to claim 2 wherein: each tilting pad (3) is of a tile-shaped structure, and the arc length of the arc side surface of the tilting pad (3) close to the arc groove (4) is equal to the arc length of the arc side surface of the arc groove (4).
4. A radial tilting pad liquid metal bearing according to claim 2 wherein: the distance between the shaft diameter (2) and each tilting pad (3) is 20-30um, and the distance between each arc-shaped groove (4) and each corresponding tilting pad (3) is less than 20 um.
5. A radial tilting pad liquid metal bearing according to claim 1 wherein: the distance between the shaft diameter (2) and each tilting pad (3) is 20 um.
6. A radial tilting pad liquid metal bearing according to claim 2 wherein: the distance between each arc-shaped groove (4) and each corresponding tilting pad (3) is 10 um.
7. A radial tilting pad liquid metal bearing according to claim 1 wherein: the number of the tilting pads (3) is 2-10, and the tilting pads (3) are uniformly distributed between the shaft diameter (2) and the shaft sleeve (1).
8. A radial tilting pad liquid metal bearing according to claim 1 wherein: the number of the tilting pads (3) is four.
9. A radial tilting pad liquid metal bearing according to claim 1 wherein: the rotary target disc is characterized by further comprising a rotary target disc, rotary shafts (6) and end covers (7), wherein the rotary shafts (6) are fixedly connected to the two ends of the shaft diameter (2), the rotary target disc is connected with one end, far away from the shaft diameter (2), of the rotary shaft (6), the end covers (7) are of a hollow cylindrical structure, the end covers (7) are fixedly arranged at the two ends of the shaft sleeve (1), and the end covers (7) are sleeved outside the corresponding rotary shafts (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121021279.3U CN214698769U (en) | 2021-05-13 | 2021-05-13 | Tilting pad radial liquid metal bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121021279.3U CN214698769U (en) | 2021-05-13 | 2021-05-13 | Tilting pad radial liquid metal bearing |
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| CN214698769U true CN214698769U (en) | 2021-11-12 |
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| CN202121021279.3U Active CN214698769U (en) | 2021-05-13 | 2021-05-13 | Tilting pad radial liquid metal bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090644A (en) * | 2021-05-13 | 2021-07-09 | 中国工程物理研究院机械制造工艺研究所 | Tilting pad radial liquid metal bearing |
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2021
- 2021-05-13 CN CN202121021279.3U patent/CN214698769U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090644A (en) * | 2021-05-13 | 2021-07-09 | 中国工程物理研究院机械制造工艺研究所 | Tilting pad radial liquid metal bearing |
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