CN220522800U - Oil pressure device for reducing axial force of tapered roller bearing at row end - Google Patents
Oil pressure device for reducing axial force of tapered roller bearing at row end Download PDFInfo
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- CN220522800U CN220522800U CN202322212133.2U CN202322212133U CN220522800U CN 220522800 U CN220522800 U CN 220522800U CN 202322212133 U CN202322212133 U CN 202322212133U CN 220522800 U CN220522800 U CN 220522800U
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- rotor shaft
- piston plate
- roller bearing
- oil
- tapered roller
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The utility model provides an oil pressure device for reducing axial force of a tapered roller bearing at a row end, which comprises a tapered roller bearing, a cylindrical roller bearing and a lock nut; the piston comprises a first piston plate, a second piston plate, a first oil inlet hole, a first oil outlet hole, a first gap, a first limiting block and a first piston ring; the first face of the first piston plate is fixed to the first left side of the first rotor shaft; the second surface of the first piston plate is contacted with the first surface of the first limiting block; the second surface of the first limiting block is fixed with the inner side of the compressor cover plate; the first rotor shaft is a first part of a bearing seat of the rotor shaft at the row end; the second piston plate is made of annular steel; the first rotor shaft is sleeved with the second rotor shaft; the first oil inlet hole is a circular hole and is arranged between the first piston plate and the second piston plate; and on the upper side of the first rotor shaft. The oil pressure device for reducing the axial force of the row-end tapered roller bearing can reduce the axial force of the row-end tapered roller bearing and weaken the abrasion of the bearing.
Description
Technical Field
The utility model relates to the technical field of air compressors, in particular to an oil pressure device for reducing axial force of a tapered roller bearing at an exhaust end.
Background
The air compressor is a main body in an air source device, and is a device for converting mechanical energy of a prime motor into air pressure energy, and is an air pressure generating device for compressing air. The working process of the compressor can be divided into three parts, namely an air suction process, a compression process and an air discharge process. When the compressor works, the rotor can be subjected to axial force under the action of high pressure, in this case, the row end bearing can also be subjected to axial force under the influence of the rotor, so that the abrasion is increased, the service life of the bearing is influenced, and the performance of the compressor is further influenced.
In the prior art, a duplex tapered roller bearing is adopted, a pair of opposite tapered roller bearings are arranged at the exhaust end, and the axial force of the bearing at the exhaust end can be reduced, so that the abrasion is reduced, but the effect is limited.
Therefore, how to significantly reduce the axial force of the row end bearing during compressor operation is a highly desirable problem.
Disclosure of Invention
In view of the above drawbacks of the prior art and limited application range, the present utility model aims to provide an oil pressure device for reducing axial force of a row-end tapered roller bearing, which is used for solving the problem that the axial force of the row-end bearing cannot be obviously reduced in the working process of a compressor in the prior art.
To achieve the above and other related objects, the present utility model provides a method of reducing axial force of a row end tapered roller bearing, comprising: tapered roller bearings, cylindrical roller bearings, lock nuts; the piston comprises a first piston plate, a second piston plate, a first oil inlet hole, a first oil outlet hole, a first gap, a first limiting block and a first piston ring; the first piston plate is made of round steel; the first face of the first piston plate is fixed to the first left side of the first rotor shaft; the second surface of the first piston plate is contacted with the first surface of the first limiting block; the second surface of the first limiting block is fixed with the inner side of the compressor cover plate; the first rotor shaft is a first part of a bearing seat of the rotor shaft at the row end; the second piston plate is made of annular steel; the first rotor shaft is sleeved with the second rotor shaft; the first oil inlet hole is a circular hole and is arranged between the first piston plate and the second piston plate; and on the upper side of the first rotor shaft; the assembly of second piston plate right side cup joint on first rotor shaft includes: tapered roller bearings, cylindrical roller bearings, lock nuts; the first oil outlet is a circular hole and is arranged between the tapered roller bearing and the cylindrical roller bearing; a first gap between the second piston plate and the first rotor shaft; a first piston ring is in the first piston plate and is immediately inboard of the row end bearing housing.
In an embodiment of the utility model, a hole diameter of the first oil inlet hole is larger than a hole diameter of the first oil outlet hole.
In an embodiment of the utility model, the dimensions of the tapered roller bearing and the dimensions of the cylindrical roller bearing are determined based on the operating pressure, gas quantity and rotational speed of the compressor; the hole diameter of the first oil inlet hole and the hole diameter of the first oil outlet hole are determined based on the air quantity and the working pressure of the compressor.
In one embodiment of the utility model, when the compressor works, high-pressure oil is injected into the first oil inlet hole, and the high-pressure oil flows to the tapered roller bearing and the cylindrical roller bearing through the first gap; and flows out through the first oil outlet.
In an embodiment of the utility model, a thickness of the first stopper is a distance between the second face of the first piston plate and an inner side of the compressor cover plate.
In one embodiment of the utility model, the rotor shaft comprises two parts at the row end bearing block, a first rotor shaft and a second rotor shaft; the first rotor shaft and the second rotor shaft have the same structure; the arrangement and connection relation of the oil pressure device on the second rotor shaft and the arrangement and connection relation of the oil pressure device on the first rotor shaft are in a symmetrical mode.
As described above, the utility model provides an oil pressure device for reducing axial force of a row-end tapered roller bearing, which has the following beneficial effects:
(1) The axial force of the tapered roller bearing at the exhaust end can be reduced, and the abrasion of the bearing is weakened.
(2) The high-pressure oil plays a role in lubricating the bearing and also reduces friction.
(3) The service life of the bearing can be prolonged, and the performance of the compressor can be further improved.
Drawings
Fig. 1 is a schematic view showing a structure of an oil pressure device for reducing axial force of a row end tapered roller bearing according to an embodiment of the present utility model.
Fig. 2 is an enlarged view showing a part of an oil pressure device for reducing axial force of a row end tapered roller bearing according to the present utility model in a first rotor shaft in an embodiment.
Fig. 3 is a schematic view showing a first clearance structure of an oil pressure device for reducing axial force of a row end tapered roller bearing according to an embodiment of the present utility model.
Description of element reference numerals
1 tapered roller bearing
2 cylindrical roller bearing
3 Lock nut
4 first piston plate
5 second piston plate
6 first oil inlet hole
7 first oil outlet
8 first gap
9 first limiting block
10 first piston ring
11 first rotor shaft
12 compressor cover plate
13 rotor shaft
Bearing seat with 14 rows of ends
15 second rotor shaft
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The oil pressure device for reducing the axial force of the row-end tapered roller bearing can reduce the axial force of the row-end tapered roller bearing and reduce the abrasion of the bearing; the high-pressure oil plays a role in lubricating the bearing and also reduces friction; thereby can improve bearing life, and then improve compressor performance.
As shown in fig. 1, in one embodiment, the oil pressure device for reducing axial force of the tapered roller bearing at the end of discharge of the present utility model comprises: tapered roller bearing 1, cylindrical roller bearing 2, lock nut 3; the oil pressure device is characterized by comprising: the piston comprises a first piston plate 4, a second piston plate 5, a first oil inlet hole 6, a first oil outlet hole 7, a first gap 8, a first limiting block 9 and a first piston ring 10; the first piston plate 4 is made of round steel; the first face of the first piston plate 4 is fixed to the first left side of the first rotor shaft 11; the second surface of the first piston plate 4 is contacted with the first surface of the first limiting block 9; the second surface of the first limiting block 9 is fixed with the inner side of the compressor cover plate; the first rotor shaft 11 is a first part of the rotor shaft 13 at the row end bearing seat 14; the second piston plate 5 is made of annular steel; the first rotor shaft 11 is sleeved and connected with the second rotor shaft; the first oil inlet hole 6 is a circular hole and is arranged between the first piston plate 4 and the second piston plate 5; and on the upper side of the first rotor shaft 11; the assembly of the second piston plate 5, which is sleeved on the first rotor shaft 11 on the right side, comprises: tapered roller bearing 1, cylindrical roller bearing 2, lock nut 3; the first oil outlet 7 is a circular hole and is arranged between the tapered roller bearing 1 and the cylindrical roller bearing 2; a first gap 8 between the second piston plate 5 and the first rotor shaft 11; a first piston ring 10 is within the first piston plate 4 and immediately inboard of the row end bearing housing 14.
Specifically, as shown in fig. 2, in the present embodiment, a partially enlarged schematic view of the present utility model, the first piston plate 4 is movable, and the second piston plate 5 is fixed; the diameter of the holes of the first oil inlet holes 6 is larger than that of the holes of the first oil outlet holes 7; the lock nut 3 is used for pressing the tapered roller bearing 1 to prevent the tapered roller bearing 1 from being displaced from the rotor shaft 13; the piston ring 10 serves to ensure tightness between the first piston plate 4 and the row end bearing seat 14.
Further specifically, the size of the tapered roller bearing 1 and the size of the cylindrical roller bearing 2 are determined based on the operating pressure, the gas amount, and the rotational speed of the compressor; the hole diameter of the first oil inlet hole 6 and the hole diameter of the first oil outlet hole 7 are determined based on the air quantity and the working pressure of the compressor.
Further specifically, as shown in fig. 3, in the present embodiment, the first gap structure of the present utility model is schematically shown, when the compressor is in operation, high pressure oil is injected into the first oil inlet hole 6, and the high pressure oil flows to the tapered roller bearing 1 and the cylindrical roller bearing 2 through the first gap 8; and flows out through the first oil outlet hole 7.
Further specifically, the thickness of the first stopper 9 is the distance between the second face of the first piston plate 4 and the inside of the compressor cover plate 12, i.e. the first stopper 9 is caught between the compressor cover plate 12 and the first piston plate 4, ensuring that the movable first piston plate 4 cannot actually move.
Further specifically, the rotor shaft 13 comprises two parts at the row end bearing housing 14, a first rotor shaft 11 and a second rotor shaft 15; the first rotor shaft 11 and the second rotor shaft 15 are identical in structure; the arrangement and connection of the components of the hydraulic device in the second rotor shaft 15 and the arrangement and connection of the components of the hydraulic device in the first rotor shaft 11 are in a symmetrical mode.
Principle of operation
When the compressor is in operation, the rotor rotates 360 degrees, high pressure is formed at the gap between the row end bearing seat 14 and the end face of the rotor, and the rotor is caused to receive rightward axial force F1; meanwhile, when the compressor works, high-pressure oil is injected into the first oil inlet hole 6, and under the action of the high-pressure oil, the first piston plate 4 is driven to move leftwards, so that the first rotor shaft 11 is driven to move leftwards, namely, the rotor is subjected to leftwards force F2 at the moment; if F2 is greater than F1, the axial force F1 applied by the rotor is completely counteracted; the left force F2-F1 is left, the first piston plate 4 and the first rotor shaft 11 do not actually move left due to the first limiting block 9, and contact friction between the first rotor shaft 11 and the row end bearing seat 14 is avoided; if F2 is smaller than F1, the axial force F1 received by the rotor is not completely canceled, but the axial force F1 is weakened, and the tapered roller bearing 1 is sleeved on the first rotor shaft 11, and the received axial force is the same as the received axial force F1 received by the rotor, so that the axial force of the row-end tapered roller bearing 1 can be reduced by the hydraulic device; and the high-pressure oil plays a role in lubricating the tapered roller bearing 1 and also reduces friction.
In conclusion, the oil pressure device for reducing the axial force of the row end bearing can reduce the axial force of the row end tapered roller bearing and reduce the abrasion of the bearing; the high-pressure oil plays a role in lubricating the bearing and also reduces friction; thereby can improve bearing life, and then improve compressor performance. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. An oil pressure device for reducing axial force of a row end tapered roller bearing, comprising: tapered roller bearings, cylindrical roller bearings, lock nuts; the oil pressure device is characterized by comprising: the piston comprises a first piston plate, a second piston plate, a first oil inlet hole, a first oil outlet hole, a first gap, a first limiting block and a first piston ring;
the first piston plate is made of round steel; the first face of the first piston plate is fixed with the first left side of the first rotor shaft; the second surface of the first piston plate is contacted with the first surface of the first limiting block; the second surface of the first limiting block is fixed with the inner side of the compressor cover plate; the first rotor shaft is a first part of a bearing seat of the rotor shaft at the row end;
the second piston plate is made of annular steel; the first rotor shaft is sleeved with the second rotor shaft;
the first oil inlet hole is a circular hole and is arranged between the first piston plate and the second piston plate; and on the upper side of the first rotor shaft;
the assembly of the right side of the second piston plate sleeved on the first rotor shaft comprises: the tapered roller bearing, the cylindrical roller bearing and the lock nut;
the first oil outlet is a circular hole and is arranged between the tapered roller bearing and the cylindrical roller bearing;
the first gap between the second piston plate and the first rotor shaft;
the first piston ring is in the first piston plate and is adjacent to the inner side of the row end bearing seat.
2. The oil pressure device of claim 1, wherein a hole diameter of the first oil inlet hole is larger than a hole diameter of the first oil outlet hole.
3. The oil pressure device according to claim 2, characterized in that the dimensions of the tapered roller bearing and the dimensions of the cylindrical roller bearing are determined based on the operating pressure, the gas amount, and the rotational speed of the compressor;
the hole diameter of the first oil inlet hole and the hole diameter of the first oil outlet hole are determined based on the air quantity and the working pressure of the compressor.
4. The oil pressure device according to claim 2, wherein high-pressure oil is injected into the first oil inlet hole when the compressor is in operation, and the high-pressure oil flows to the tapered roller bearing and the cylindrical roller bearing through the first gap; and is combined with
And flows out through the first oil outlet.
5. The oil pressure device of claim 1, wherein a thickness of the first stopper is a distance between the second face of the first piston plate and an inner side of the compressor cover plate.
6. The oil hydraulic device of any one of claims 1-5, wherein the rotor shaft includes two parts at the row end bearing housing, the first rotor shaft and the second rotor shaft;
the first rotor shaft and the second rotor shaft have the same structure;
the arrangement and connection relation of the oil pressure device on the assembly of the second rotor shaft and the arrangement and connection relation of the oil pressure device on the assembly of the first rotor shaft are in a symmetrical mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322212133.2U CN220522800U (en) | 2023-08-16 | 2023-08-16 | Oil pressure device for reducing axial force of tapered roller bearing at row end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322212133.2U CN220522800U (en) | 2023-08-16 | 2023-08-16 | Oil pressure device for reducing axial force of tapered roller bearing at row end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522800U true CN220522800U (en) | 2024-02-23 |
Family
ID=89929816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322212133.2U Active CN220522800U (en) | 2023-08-16 | 2023-08-16 | Oil pressure device for reducing axial force of tapered roller bearing at row end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522800U (en) |
-
2023
- 2023-08-16 CN CN202322212133.2U patent/CN220522800U/en active Active
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