CN220378715U - Compressor shaft sleeve structure, pump body structure and compressor - Google Patents
Compressor shaft sleeve structure, pump body structure and compressor Download PDFInfo
- Publication number
- CN220378715U CN220378715U CN202321913276.XU CN202321913276U CN220378715U CN 220378715 U CN220378715 U CN 220378715U CN 202321913276 U CN202321913276 U CN 202321913276U CN 220378715 U CN220378715 U CN 220378715U
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- shaft sleeve
- compressor
- sleeve body
- bearing
- shaft
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
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- Compressor (AREA)
Abstract
The utility model relates to a shaft sleeve structure of a compressor, a pump body structure and the compressor, wherein the shaft sleeve structure of the compressor is arranged between a bearing and a crankshaft of the compressor and comprises a shaft sleeve body, the shaft sleeve body is of a tubular structure with two through ends, and shaft sleeve threads are arranged on the peripheral wall of the shaft sleeve body; the bearing is provided with a containing cavity for containing the shaft sleeve body, and the inner peripheral wall of the containing cavity is provided with bearing threads; the shaft sleeve body is connected with the bearing thread of the accommodating cavity in a matching way through the shaft sleeve thread. According to the shaft sleeve structure of the compressor, the two short shaft sleeve bodies in the prior art are replaced by the long shaft sleeve body, the positioning between the long shaft sleeve body and the bearing is simple, the press fitting is simple and quick, the problem of large deformation of the bearing is avoided, and the assembly time and the labor cost are effectively reduced.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a compressor shaft sleeve structure, a pump body structure and a compressor.
Background
With the expansion of compressor applications and the gradual expansion of compressor displacement, higher demands are placed on the reliability of compression. For the compressor, the crankshaft is stressed greatly in the whole operation process of the compressor, and often the crankshaft and the bearings are relatively weak parts, so that excessive abrasion is easy to generate, and the compressor is in failure. It is therefore common practice to sleeve the bearing portion of the compressor. The shaft sleeve is generally made of high-wear-resistance alloy materials.
Because the contact part of the inner diameter surface of the bearing and the crankshaft has higher requirements on the precision, the common practice is as follows: the semi-finished product of the bearing is processed to ensure that the inner diameter surface of the bearing has certain cylindricity coarse overrun, the bearing is pressed into the shaft sleeve on equipment, and then the inner diameter surface of the shaft sleeve is finished.
For the upper bearing, the friction force f in the process of pressing the shaft sleeve into the bearing is calculated as: f=uf=uf=pχ=u×pχ pi×r×h, where u is a friction coefficient, S is a contact area between the sleeve and the bearing, R is an outer diameter of the sleeve, and H is a height of the sleeve. As can be seen from the formula, the higher the shaft sleeve is, the larger the same interference pressing force is, and the larger the deformation of the bearing is, so that the manufacturing is not facilitated and the design requirement is difficult to meet. Thus, current upper bearings generally reduce the friction they are pressed into the bearing by employing two bushings.
However, the inner wall of the shaft sleeve is provided with an oil groove, and the oil groove has a certain installation angle requirement relative to the exhaust port, so that the lubrication and stress optimization can be ensured, and the problem that the positioning of the two shaft sleeves and the bearing is difficult exists, so that the two shaft sleeves are easy to be crushed and scrapped. On the other hand, two shaft sleeves are required to be pressed twice, so that the time is long and the labor cost is relatively high.
Disclosure of Invention
Based on the above, the utility model aims to overcome the defects of the prior art, and provide a compressor shaft sleeve structure, wherein two short shaft sleeve bodies in the prior art are replaced by one long shaft sleeve body, and the positioning between the long shaft sleeve body and a bearing is simple, the press mounting is simple and quick, the problem of large deformation of the bearing is avoided, and the assembly time and the labor cost are effectively reduced.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the shaft sleeve structure of the compressor is arranged between a bearing and a crankshaft of the compressor and comprises a shaft sleeve body, wherein the shaft sleeve body is of a tubular structure with two through ends, and shaft sleeve threads are arranged on the outer peripheral wall of the shaft sleeve body; the bearing is provided with a containing cavity for containing the shaft sleeve body, and the inner peripheral wall of the containing cavity is provided with bearing threads; the shaft sleeve body is connected with the bearing thread of the accommodating cavity in a matching way through the shaft sleeve thread.
As one embodiment, the outer diameter of the sleeve body is smaller than the inner diameter of the accommodating cavity, and the sleeve thread at least partially protrudes out of the outer peripheral wall of the sleeve body along the radial direction of the sleeve body.
As one embodiment, the length of the shaft sleeve thread is H, the length of the shaft sleeve body is H, and the H satisfy: h is more than or equal to 3mm and less than or equal to H.
As an embodiment, the length H of the sleeve thread is equal to half the length H of the sleeve body.
As one embodiment, the sleeve thread is provided at an upper end or a middle or a lower end of the outer peripheral wall of the sleeve body.
As one embodiment, the width of the thread of the shaft sleeve is D, the wall thickness of the shaft sleeve body is D, and D satisfy the following conditions: d is less than or equal to D-0.2mm.
As an implementation mode, an oil groove communicated with two ends of the shaft sleeve body is formed in the inner wall of the shaft sleeve body.
As one embodiment, the oil groove is a spiral groove arranged around the central shaft of the shaft sleeve body.
The compressor shaft sleeve structure has the beneficial effects that:
compared with the prior art, the compressor shaft sleeve structure of this application, through set up the axle sleeve screw thread on the outside of axle sleeve body, utilize threaded connection to replace interference crimping, can effectively reduce the frictional force that the axle sleeve body pressed in the bearing, realize the effect of extension axle sleeve body length, and then replace two minor axis sleeve bodies among the prior art through a long axle sleeve body, and with the location between the bearing simple and easy, the pressure equipment is simple and convenient swift, can not cause the great problem of deflection to the bearing, effectively reduces equipment time and cost of labor.
In another aspect, the present utility model provides a pump body structure comprising a compressor sleeve structure as described above. According to the pump body structure, the length of the improved shaft sleeve body can be prolonged by improving the shaft sleeve structure of the compressor, so that two shaft sleeves in the prior art are replaced, the assembly pressure between the shaft sleeve body and the bearing is effectively reduced, the assembly difficulty between the shaft sleeve body and the bearing is reduced, and the assembly time between the shaft sleeve body and the bearing is shortened.
On the other hand, the utility model also provides a compressor which comprises the pump body structure. According to the compressor, the shaft sleeve structure of the compressor is improved, so that the length of the improved shaft sleeve body can be prolonged, two shaft sleeves in the prior art are replaced, the assembly pressure between the shaft sleeve body and the bearing is effectively reduced, the assembly difficulty between the shaft sleeve body and the bearing is reduced, and the assembly time between the shaft sleeve body and the bearing is shortened.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of a compressor sleeve structure according to the present utility model;
FIG. 2 is a schematic dimensional view of a compressor sleeve structure according to the present utility model;
FIG. 3 is a schematic cross-sectional view of a compressor sleeve structure and bearing of the present utility model;
FIG. 4 is an enlarged view of a portion of the cross-sectional schematic shown in FIG. 3;
fig. 5 is an exploded view of the compressor sleeve structure and bearing of the present utility model.
Reference numerals illustrate: 10. a sleeve body; 11. shaft sleeve threads; 12. an oil drain; 20. a bearing; 21. the accommodating cavity.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible implementations and advantages of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
Please refer to fig. 1 to 5; the embodiment provides a compressor shaft sleeve structure, which is arranged between a bearing 20 and a crankshaft of a compressor and comprises a shaft sleeve body 10, wherein the shaft sleeve body 10 is of a tubular structure with two through ends, and shaft sleeve threads 11 are arranged on the outer peripheral wall of the shaft sleeve body; the bearing 20 is provided with a containing cavity 21 for containing the shaft sleeve body 10, and bearing threads are arranged on the inner peripheral wall of the containing cavity 21; the sleeve body 10 is in threaded fit connection with the bearing of the accommodating cavity 21 through the sleeve thread 11.
In this embodiment, the outer diameter of the sleeve body 10 is smaller than the inner diameter of the accommodating cavity 21, and the sleeve thread 11 protrudes from the outer peripheral wall of the sleeve body 10 at least partially along the radial direction of the sleeve body 10. Specifically, the outer diameter of the sleeve body 10 of the present embodiment is slightly smaller than the inner diameter of the housing cavity 21, so that the sleeve body 10 of the present embodiment can be placed in the housing cavity 21 of the bearing 20 and be in threaded fit connection with the bearing of the housing cavity 21.
Therefore, the shaft sleeve threads 11 are arranged on the outer periphery side of the shaft sleeve body 10, so that the shaft sleeve body 10 is connected with the bearing 20 in a threaded manner to replace interference press-fit connection adopted in the prior art, and further the pressing force of the shaft sleeve body 10 on the bearing 20 can be avoided, the shaft sleeve body 10 and the bearing 20 can be connected through lengthening the length of the shaft sleeve body 10, and the assembly time between the shaft sleeve body 10 and the bearing 20 is effectively prolonged.
Optionally, the length of the sleeve thread 11 in this embodiment is H, the length of the sleeve body 10 is H, and the H satisfy: h is more than or equal to 3mm and less than or equal to H. The length H of the sleeve thread 11 of the present embodiment is equal to half the length H of the sleeve body 10. In addition, the sleeve thread 11 of the present embodiment may be disposed at an upper end, a middle portion, or a lower end of the outer peripheral wall of the sleeve body 10, wherein the sleeve thread 11 of the present embodiment is disposed at the middle portion of the outer peripheral wall of the sleeve body 10, and accordingly, the bearing thread of the accommodating chamber 21 of the bearing 20 is disposed at the middle portion of the accommodating chamber 21, so that the two are mated.
In this embodiment, the width of the sleeve thread 11 is D, the wall thickness of the sleeve body 10 is D, and D satisfy: d is less than or equal to D-0.2mm. The thickness of the sleeve thread 11 of the present embodiment may be 0.8mm, and accordingly, the thickness of the wall of the sleeve body 10 of the present embodiment may be, but is not limited to, 1.0mm, 1.2mm.
In addition, the inner wall of the sleeve body 10 of the present embodiment is provided with an oil groove 12 communicating with two ends of the sleeve body 10. The oil groove 12 is a spiral groove arranged around the central axis of the shaft sleeve body 10.
When the compressor sleeve structure of the present embodiment is applied to a compressor, the tightening direction of the sleeve thread 11 of the sleeve body 10 of the present embodiment is consistent with the rotation direction of the crankshaft of the compressor, so as to ensure that the sleeve body 10 will not loosen during the operation of the compressor.
Compared with the prior art, the compressor shaft sleeve structure of this application, through set up shaft sleeve screw thread 11 on the outside of shaft sleeve body 10, utilize threaded connection to replace interference crimping, can effectively reduce the frictional force that shaft sleeve body 10 impressed bearing 20, realize the effect of extension shaft sleeve body 10 length, and then replace two minor axis sleeve bodies among the prior art through a long shaft sleeve body 10, and with the location between the bearing 20 simple and easy, the pressure equipment is simple and easy swift, can not cause the great problem of deflection to bearing 20, effectively reduces equipment time and cost of labor.
In another aspect, the present utility model provides a pump body structure comprising a compressor sleeve structure as described above. According to the pump body structure, the length of the improved shaft sleeve body 10 can be prolonged by improving the shaft sleeve structure of the compressor, so that two shaft sleeves in the prior art are replaced, the assembly pressure between the shaft sleeve body 10 and the bearing 20 is effectively reduced, the assembly difficulty between the shaft sleeve body 10 and the bearing 20 is reduced, and the assembly time between the shaft sleeve body and the bearing 20 is shortened.
On the other hand, the utility model also provides a compressor which comprises the pump body structure. According to the compressor, the length of the improved shaft sleeve body 10 can be prolonged by improving the shaft sleeve structure of the compressor, so that two shaft sleeves in the prior art are replaced, the assembly pressure between the shaft sleeve body 10 and the bearing 20 is effectively reduced, the assembly difficulty between the shaft sleeve body 10 and the bearing 20 is reduced, and the assembly time between the shaft sleeve body and the bearing 20 is shortened.
The above examples merely represent a few embodiments of the present utility model, which are described in more detail and detail, but are not to be construed as limiting the scope of the compressor sleeve structure, pump body structure and compressor of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. The utility model provides a compressor axle sleeve structure, its setting is between bearing and the bent axle of compressor, its characterized in that:
the novel shaft sleeve comprises a shaft sleeve body which is of a tubular structure with two through ends, and shaft sleeve threads are arranged on the outer peripheral wall of the shaft sleeve body; the bearing is provided with a containing cavity for containing the shaft sleeve body, and the inner peripheral wall of the containing cavity is provided with bearing threads; the shaft sleeve body is connected with the bearing thread of the accommodating cavity in a matching way through the shaft sleeve thread.
2. The compressor sleeve structure of claim 1, wherein:
the outer diameter of the shaft sleeve body is smaller than the inner diameter of the accommodating cavity, and at least part of the shaft sleeve threads protrude out of the outer peripheral wall of the shaft sleeve body along the radial direction of the shaft sleeve body.
3. The compressor sleeve structure of claim 1, wherein:
the length of axle sleeve screw thread is H, the length of axle sleeve body is H, H with H satisfies: h is more than or equal to 3mm and less than or equal to H.
4. A compressor sleeve structure according to claim 3, wherein:
the length H of the shaft sleeve thread is equal to half of the length H of the shaft sleeve body.
5. The compressor sleeve structure of claim 4, wherein:
the shaft sleeve threads are arranged at the upper end, the middle part or the lower end of the peripheral wall of the shaft sleeve body.
6. The compressor sleeve structure of claim 1, wherein:
the width of the shaft sleeve thread is D, the wall thickness of the shaft sleeve body is D, and D and D satisfy the following conditions: d is less than or equal to D-0.2mm.
7. The compressor sleeve structure of claim 1, wherein:
the inner wall of the shaft sleeve body is provided with an oil groove communicated with two ends of the shaft sleeve body.
8. The compressor sleeve structure of claim 7, wherein:
the oil groove is a spiral groove which is arranged around the central shaft of the shaft sleeve body.
9. The utility model provides a pump body structure which characterized in that:
a compressor sleeve structure comprising any one of claims 1 to 8.
10. A compressor, characterized in that:
comprising a pump body structure as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321913276.XU CN220378715U (en) | 2023-07-19 | 2023-07-19 | Compressor shaft sleeve structure, pump body structure and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321913276.XU CN220378715U (en) | 2023-07-19 | 2023-07-19 | Compressor shaft sleeve structure, pump body structure and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220378715U true CN220378715U (en) | 2024-01-23 |
Family
ID=89562200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321913276.XU Active CN220378715U (en) | 2023-07-19 | 2023-07-19 | Compressor shaft sleeve structure, pump body structure and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220378715U (en) |
-
2023
- 2023-07-19 CN CN202321913276.XU patent/CN220378715U/en active Active
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