CN202360448U - High-speed gear thrust bearing - Google Patents
High-speed gear thrust bearing Download PDFInfo
- Publication number
- CN202360448U CN202360448U CN201120492184XU CN201120492184U CN202360448U CN 202360448 U CN202360448 U CN 202360448U CN 201120492184X U CN201120492184X U CN 201120492184XU CN 201120492184 U CN201120492184 U CN 201120492184U CN 202360448 U CN202360448 U CN 202360448U
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- thrust
- groove
- plate body
- circular plate
- oil
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Abstract
The utility model discloses a high-speed gear thrust bearing which is a circular plate body. The middle part of the circular plate body is provided with a central through hole matched with a gear shaft; and the high-speed gear thrust bearing is characterized in that a plate surface on one side of the circular plate body is provided with a thrust surface; the thrust surface is divided into a plurality of thrust acting areas in the circumferential direction; the thrust acting areas consist of thrust grooves and oil tanks; the oil tanks are linear grooves and are radially formed along the circular plate body; oil inlet holes are formed on the oil tanks; the thrust grooves are fan-shaped grooves around the circumferential direction of the circular plate body and are divided into forward thrust grooves and backward thrust grooves; the bottom surfaces of the forward thrust grooves are inclined surfaces which are inclined downwards clockwise around the circular plate body; the bottom surfaces of the backward thrust grooves are inclined surfaces which are inclined downwards anticlockwise around the circular plate body; the downwards inclined ends of the forward thrust grooves and the backward thrust grooves are provided with the oil tanks and are communicated with the oil tanks; and the bottom surfaces of the oil tanks are lower than the downwards inclined ends of the bottom surfaces of the thrust grooves. By the thrust bearing, axial shifting of a high-speed gear can be thrust in a bidirectional mode, and the motor is prevented from being damaged.
Description
Technical field
The utility model relates to bearing, is specifically related to a kind of double thrustbearing that is exclusively used in centrifugal refigerating compressor high-speed rotary gear system.
Background technique
Along with the continuous development of national economy, the demand of the medium-and-large-sized central air-conditioning system of commercial kitchen area improves constantly, and the application that makes refrigeration compressor (particularly centrifugal refigerating compressor) more and more widely.The train of gearings that in centrifugal refigerating compressor, has high speed rotating, train of gearings is in the happen occasionally trend of axial float of high speed rotating, and this play is in case take place; High gear can be beaten tooth with the low speed gear that is meshed; Motor idle running, even can burn motor, sheathed thrust bearing on high speed gear shaft need to take place for avoiding this phenomenon; Thrust bearing contacts with the smooth surface of the thrust disc that is set in the gear shaft side equally, with the axial float of thrust high speed gear shaft.In the existing technology, thrust bearing is unidirectional thrust, can only the thrust high gear be the axial float trend of a direction promptly; And the motor counter-rotating can take place in the installation and operation debug phase inverse time owing to the motor three-phase power wiring connects in centrifugal compressor, perhaps at normal operating phase; Because of outside three phase mains changes; The motor of compressor also possibly reverse, and compressor electric motor counter-rotating can drive the counter-rotating of high-speed rotary gear system, the thrust bearing of this moment thrust function that just can't recur; This not only can damage one direction thrust bearing, and motor is damaged.
Summary of the invention
The utility model provides a kind of thrust bearing that can the axial play of two-way thrust high gear, does not damage with the protection motor, solves the deficiency of existing technology.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of high gear thrust bearing is a circular plate body; This circle plate body middle part offers the central through bore that matches with gear shaft, and the side plate face of said circular plate body is a thrust surface, on this thrust surface around circumferentially being divided into several thrust function districts; Said thrust function district is made up of thrust groove and oil groove; Wherein said oil groove is a straight shape groove, radially offers along circular plate body, in oil groove, offers oil inlet hole; The fan groove of said thrust groove for circumferentially offering around circular plate body; And the thrust groove is divided into forward thrust groove and reverse thrust groove; Wherein the groove bottom of forward thrust groove is around the inclined-plane that circular plate body has a down dip clockwise, and the groove bottom of reverse thrust groove is the inclined-plane around circular plate body has a down dip counterclockwise; Forward thrust groove and the reverse thrust groove end place that has a down dip establishes said oil groove, and joins with this oil groove and to be communicated with, and the oil groove groove bottom is lower than the end that has a down dip of thrust groove groove bottom.
Related content in the technique scheme is explained as follows:
1, in the such scheme, said thrust function district is two-way thrust function district, and this two-way thrust function district is that center, a forward thrust groove and a reverse thrust groove distribute with this oil groove bilateral symmetry with an oil groove.
2, in the such scheme; Said thrust function district comprises forward thrust function district and two-way thrust function district; Wherein forward thrust function district is made up of a said forward thrust groove and an oil groove, and two-way thrust function district is that center, a forward thrust groove and a reverse thrust groove distribute with this oil groove bilateral symmetry with an oil groove.
3, in the such scheme, the central through bore on said oil groove one end and the circular plate body connects.
4, in the such scheme, all offer the screw that several cooperate with outside fastening connection piece on the biside plate face of said circular plate body.
The utility model working principle is: during use, thrust bearing is set on the gear shaft, and its thrust surface contacts with the smooth surface of the thrust disc that is set in the gear shaft side equally; The thrust bearing axial restraint, thrust disc rotates with gear shaft, and the groove bottom week of the thrust groove in the thrust function district on the thrust surface dips down; The lubricant oil that from oil inlet hole, will have pressure injects oil groove; Lubricant oil also flows in the thrust groove that communicates with oil groove, when the train of gearings high speed rotating, and the smooth flat compressing lubricant oil that thrust disc cooperates with thrust bearing; Cooperate oil pressure again; In the thrust groove, promptly form an oil film, this oil film produces a tilted direction shearing stress to the gear side plane, the axial float trend that the axial thrust load of this shearing stress is produced when promptly being used for the rotation of thrust high-speed gear.Owing to have forward thrust groove and reverse two kinds of thrust grooves of thrust groove, the lubricating oil oil film in two kinds of thrust grooves produces shearing stress in the opposite direction to the gear side plane, and is therefore also opposite to the thrust function power of high gear; Be that gear is when just changeing; Forward thrust groove plays thrust function, and gear when counter-rotating, reverse thrust groove plays thrust function; When forward and backward, all can protect motor, not make the motor internal damage parts.
Because the technique scheme utilization, the utility model compared with prior art has advantage:
1, because the utility model is simple in structure, low cost of manufacture, easy to use.
2, because the central through bore on the utility model oil groove one end and the circular plate body connects, the lubricant oil that injects oil groove can flow to gear shaft, has improved the running fluency of thrust bearing and gear shaft, increases the service life.
Description of drawings
Accompanying drawing 1 is the utility model first embodiment's a stereogram;
Accompanying drawing 2 is the thrust surface plan view forward of accompanying drawing 1;
Accompanying drawing 3 is the A-A sectional view of accompanying drawing 2;
Accompanying drawing 4 is the B-B sectional view of accompanying drawing 2;
Accompanying drawing 5 is the utility model second embodiment's a thrust surface plan view forward.
In the above accompanying drawing: 1, circular plate body; 2, central through bore; 3, oil groove; 4, forward thrust groove; 5, reverse thrust groove; 6, oil inlet hole; 7, screw.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment one: shown in accompanying drawing 1-4, a kind of high gear thrust bearing is a circular plate body 1; This circle plate body 1 middle part offers the central through bore 2 that matches with gear shaft; The side plate face of said circular plate body 1 is a thrust surface, and around circumferentially being divided into several thrust function districts, said thrust function district is made up of thrust groove and 3 in oil groove on this thrust surface; Wherein said oil groove 3 is a straight shape groove; Radially offer along circular plate body 1, in oil groove 3, offer oil inlet hole 6, oil inlet hole 6 connects the biside plate face of circular plate body 1; The thrust groove is around the circumferential fan groove of circular plate body 1; And the thrust groove is divided into forward thrust groove 4 and reverse thrust groove 5; Wherein the groove bottom of forward thrust groove 4 is around the inclined-plane that circular plate body 1 has a down dip clockwise, and the groove bottom of reverse thrust groove 5 is the inclined-plane around circular plate body 1 has a down dip counterclockwise; Forward thrust groove 4 and the reverse thrust groove 5 end place that has a down dip establishes said oil groove 3, and joins with oil groove 3 and to be communicated with, and oil groove 3 groove bottom are lower than the end that has a down dip of thrust groove groove bottom.
The thrust function district is two-way thrust function district, and this two-way thrust function district is that center, a forward thrust groove 4 and a reverse thrust groove 5 distribute with these oil groove 3 bilateral symmetry with an oil groove 3.Be provided with six two-way thrust function districts in the present embodiment, six forward thrust grooves 4 and six reverse thrust grooves 5 are promptly arranged.
Embodiment two: shown in accompanying drawing 5; Basic structure is similar with embodiment one; But wherein the thrust function district comprises two kinds in forward thrust function district and two-way thrust function district; Wherein forward thrust function district is made up of a said forward thrust groove 4 and an oil groove 3, and two-way thrust function district is that center, a forward thrust groove 4 and a reverse thrust groove 5 distribute with these oil groove 3 bilateral symmetry with an oil groove 3.Be provided with three two-way thrust function districts and six forward thrust function districts in the present embodiment; Promptly be provided with nine forward thrust grooves 4 and three reverse thrust grooves 5; The forward thrust capacity is better than reverse thrust capacity in use, and this kind design is adapted to the lower operating mode of motor counter-rotating probability.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.
Claims (5)
1. high gear thrust bearing; It is a circular plate body (1); This circle plate body (1) middle part offers the central through bore (2) that matches with gear shaft, and it is characterized in that: the side plate face of said circular plate body (1) is a thrust surface, on this thrust surface around circumferentially being divided into several thrust function districts; Said thrust function district is made up of thrust groove and oil groove (3); Wherein said oil groove (3) is a straight shape groove, radially offers along circular plate body (1), in oil groove (3), offers oil inlet hole (6); The fan groove of said thrust groove for circumferentially offering around circular plate body (1); And the thrust groove is divided into forward thrust groove (4) and reverse thrust groove (5); Wherein the groove bottom of forward thrust groove (4) is around the inclined-plane that circular plate body (1) has a down dip clockwise, and the groove bottom of reverse thrust groove (5) is the inclined-plane around circular plate body (1) has a down dip counterclockwise; Forward thrust groove (4) and reverse thrust groove (5) the end place that has a down dip establishes said oil groove (3), and joins with said oil groove (3) and to be communicated with, and oil groove (3) groove bottom is lower than the end that has a down dip of thrust groove groove bottom.
2. high gear thrust bearing according to claim 1; It is characterized in that: said thrust function district is two-way thrust function district, and this two-way thrust function district is that center, a forward thrust groove (4) distribute with this oil groove (3) bilateral symmetry with a reverse thrust groove (5) with an oil groove (3).
3. high gear thrust bearing according to claim 1; It is characterized in that: said thrust function district comprises forward thrust function district and two-way thrust function district; Wherein forward thrust function district is made up of a said forward thrust groove (4) and an oil groove (3), and two-way thrust function district is that center, a forward thrust groove (4) distribute with this oil groove (3) bilateral symmetry with a reverse thrust groove (5) with an oil groove (3).
4. according to each described high gear thrust bearing of claim 1-3, it is characterized in that: the central through bore (2) on said oil groove (3) one ends and the circular plate body (1) connects.
5. according to each described high gear thrust bearing of claim 1-3, it is characterized in that: all offer the screw (7) that several cooperate with outside fastening connection piece on the biside plate face of said circular plate body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120492184XU CN202360448U (en) | 2011-12-01 | 2011-12-01 | High-speed gear thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120492184XU CN202360448U (en) | 2011-12-01 | 2011-12-01 | High-speed gear thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360448U true CN202360448U (en) | 2012-08-01 |
Family
ID=46571638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120492184XU Expired - Lifetime CN202360448U (en) | 2011-12-01 | 2011-12-01 | High-speed gear thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089330A (en) * | 2015-04-30 | 2016-11-09 | 通用汽车环球科技运作有限责任公司 | 2 grades of slope thrust bearing base designs under fog lubrication situation |
| CN106678168A (en) * | 2016-11-17 | 2017-05-17 | 河北工程大学 | Axial support capable of adapting to high-rotation-speed working condition |
-
2011
- 2011-12-01 CN CN201120492184XU patent/CN202360448U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089330A (en) * | 2015-04-30 | 2016-11-09 | 通用汽车环球科技运作有限责任公司 | 2 grades of slope thrust bearing base designs under fog lubrication situation |
| CN106678168A (en) * | 2016-11-17 | 2017-05-17 | 河北工程大学 | Axial support capable of adapting to high-rotation-speed working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |