CN218625112U - Lower bearing cap and compressor movement assembly - Google Patents
Lower bearing cap and compressor movement assembly Download PDFInfo
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- CN218625112U CN218625112U CN202223154101.3U CN202223154101U CN218625112U CN 218625112 U CN218625112 U CN 218625112U CN 202223154101 U CN202223154101 U CN 202223154101U CN 218625112 U CN218625112 U CN 218625112U
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- oil groove
- annular oil
- bearing cap
- crankshaft
- lower bearing
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Abstract
The utility model discloses a lower bearing cap and a compressor movement assembly, which comprises a bearing cap body; the working end face of the bearing cap body is provided with an annular oil groove and a connecting chute; the annular oil groove is a circular opening groove and is arranged right opposite to the edge of the outer side of the lower supporting surface of the eccentric part of the crankshaft; the connecting chute is arranged between the annular oil groove and the inner diameter side of the bearing cover body, the inlet end of the connecting chute is communicated with the bearing inner hole oil groove of the bearing cover body, and the outlet end of the connecting chute is communicated with the inner side wall of the annular oil groove; the utility model discloses a set up annular oil groove at the working end face of bearing cap body to just set up annular oil groove to the under bracing face outside edge of bent axle eccentric part, so that the under bracing face outside edge of bent axle eccentric part is effectively avoided to the working end face of bearing cap body, and then has avoided the abnormal wear between bent axle eccentric part and the bearing cap body, has effectively improved the working property of compressor, and the performance of having guaranteed the same batch product has higher uniformity.
Description
Technical Field
The utility model belongs to the technical field of the rotor formula compressor, in particular to lower bearing cap and compressor core assembly.
Background
In the compressor core assembly, static friction operation is performed between the lower support surface of the eccentric part of the crankshaft and the working end surface of the lower bearing cover; at present, the crankshafts are mostly formed through batch machining, the phenomenon that machining errors of lower supporting surfaces of eccentric parts of the crankshafts are large and the roughness of edges of the supporting surfaces is high is inevitably caused, and then in the running process of a machine core, the abnormal phenomenon that the lower supporting surfaces of the eccentric parts of the crankshafts abrade the working end surfaces of lower bearing covers often occurs.
Research shows that the main reason for causing the abnormal abrasion phenomenon between the lower supporting surface of the eccentric part of the crankshaft and the working end surface of the lower bearing cover is that a plurality of high points exist on the lower supporting surface of the eccentric part of the crankshaft, and the high points are mainly concentrated on the edges of the supporting surface of the eccentric part; due to abnormal abrasion between the lower supporting surface of the eccentric part of the crankshaft and the working end surface of the lower bearing cover, high friction power consumption exists between the crankshaft and the lower bearing cover, the working performance of the compressor is low, and the performance consistency of products in the same batch is poor.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model provides a lower bearing cap and compressor core assembly to solve because the unusual wear phenomenon between the work terminal surface of bent axle eccentric part under bracing face and lower bearing cap, lead to having higher friction consumption between bent axle and the lower bearing cap, the working property that causes the compressor is lower, and the poor technical problem of performance uniformity of batch product.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a lower bearing cap, which comprises a bearing cap body;
the working end face of the bearing cover body is provided with an annular oil groove and a connecting chute; the annular oil groove is a circular opening groove and is arranged right opposite to the edge of the outer side of the lower supporting surface of the eccentric part of the crankshaft;
the connecting chute is arranged between the annular oil groove and the inner diameter side of the bearing cover body, the inlet end of the connecting chute is communicated with the bearing inner hole oil groove of the bearing cover body, and the outlet end of the connecting chute is communicated with the inner side wall of the annular oil groove.
Further, the extending direction of the central line of the connecting inclined groove is the same as the rotating direction of the crankshaft eccentric part.
Furthermore, the outer side edge of the lower support surface of the eccentric part of the crankshaft is positioned right above the central line of the annular oil groove.
Furthermore, an included angle between the central line of the inlet end of the connecting chute and the tangent line of the inner diameter circle of the bearing cover body is 0-90 degrees; the included angle between the center line of the outlet end of the connecting chute and the inner diameter circle tangent of the bearing cover body is 0-90 degrees.
Furthermore, the cross section width of the annular oil groove is the same as that of the connecting inclined groove, and the cross section depth of the annular oil groove is the same as that of the connecting inclined groove.
Further, the central line of the annular oil groove is superposed with the rotating track of the edge at the outer side of the lower supporting surface of the eccentric part of the crankshaft; the outer side of the annular oil groove extends towards the direction far away from the central line of the crankshaft eccentric part, and the inner side of the annular oil groove extends towards the direction close to the central line of the crankshaft eccentric part.
Further, the width of the inside of the annular oil groove and below the lower support surface of the crank eccentric portion is 20% of the width of the lower support surface of the crank eccentric portion.
Further, the cross section width of the annular oil groove is 1.5 +/-0.5 mm.
Furthermore, lubricating oil is stored in the annular oil groove.
The utility model also provides a compressor movement assembly, which comprises an upper bearing cover, a cylinder, a crankshaft, a rotor, a slip sheet and a lower bearing cover; the upper bearing cover is arranged at one end of the cylinder in a sealing manner, and the lower bearing cover is arranged at the other end of the cylinder in a sealing manner; the crankshaft, the said lower bearing cap adopts the said lower bearing cap; the rotor is arranged in a compression cavity of the cylinder; the crankshaft is used for driving the rotor to rotate; the sliding sheet is connected with the rotor and is used for dividing a compression cavity of the cylinder into a high-pressure cavity and a low-pressure cavity.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a lower bearing cap and compressor movement subassembly, through set up the annular oil groove at the working end face of bearing cap body, and set up the annular oil groove just to the edge outside the lower bracing surface of bent axle eccentric part, so that the working end face of bearing cap body effectively avoids the edge outside the lower bracing surface of bent axle eccentric part, and then avoided the unusual wearing and tearing between bent axle eccentric part and the bearing cap body, reduced the friction consumption between bent axle and the lower bearing cap, effectively improved the working property of compressor, guaranteed that the performance of the product of the same batch has higher uniformity; simultaneously, utilize the connection chute to set up bearing hole oil groove and annular oil groove intercommunication, effectively guaranteed lubricating oil in the bearing hole oil groove and passed through the connection chute and get into annular oil groove in, effectively improved the lubricated effect between lower bearing cap and the bent axle eccentric section.
Drawings
Fig. 1 is a top view of a lower bearing cap according to the present invention;
fig. 2 is a cross-sectional view of the lower bearing cap according to the present invention;
fig. 3 is a schematic view of an assembly structure of the lower bearing cap and the crankshaft according to the present invention;
fig. 4 is a schematic view of the partial assembly structure of the lower bearing cap and the crankshaft of the present invention.
Wherein, 1, the lower bearing cover, 2, the crank eccentric part; 11 a bearing cap body; 101 annular oil groove, 102 connect the chute.
Detailed Description
In order to make the technical problem solved by the present invention, technical solution and beneficial effect are more clearly understood, and the following specific embodiments are right for the present invention to proceed further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1-4, the present invention provides a lower bearing cap, wherein the lower bearing cap 1 is used in a rotor type compressor; the lower bearing cover 1 comprises a bearing cover body 11; a bearing inner hole oil groove is formed in a bearing inner hole of the bearing cover body 11; the working end face of the bearing cap body 11 is provided with an annular oil groove 101 and a connecting chute 102; the annular oil groove 101 is a circular opening groove and is arranged opposite to the outer side edge of the lower support surface of the crankshaft eccentric part 2; the center line of the annular oil groove 101 is parallel to the upper and lower sides of the lower bearing surface of the crankshaft eccentric portion 2, that is, the lower bearing surface of the crankshaft eccentric portion 2 is located right above the center line of the annular oil groove 101.
In the present invention, the connecting chute 102 is disposed between the annular oil groove 101 and the inner diameter side of the bearing cap body 11; the inlet end of the connecting chute 102 is communicated with the bearing inner hole oil groove, and the outlet end of the connecting chute 102 is communicated with the inner side wall of the annular oil groove 101; wherein, the extension direction of the central line of the connecting chute 102 is the same as the rotation direction of the crankshaft eccentric part 2; when the extending direction of the central line of the connecting chute 102 is set to be the same as the rotating direction of the crankshaft eccentric part 2, the flowing-in direction and the flowing-out direction of the lubricating oil are ensured to be the same as the rotating direction of the crankshaft eccentric part 2, and the normal infiltration of the lubricating oil on the lower supporting surface of the crankshaft eccentric part 2 is further ensured.
In the utility model, the included angle between the central line of the inlet end of the connecting chute 102 and the inner diameter circle tangent of the bearing cap body 11 is 0-90 degrees; the included angle between the center line of the outlet end of the connecting chute 102 and the tangent of the inner diameter circle of the bearing cover body 11 is 0-90 degrees; the cross section width of the annular oil groove 101 is the same as that of the connecting inclined groove 102, and the cross section depth of the annular oil groove 101 is the same as that of the connecting inclined groove 102; the central line of the annular oil groove 101 is superposed with the rotating track of the outer edge of the lower supporting surface of the crankshaft eccentric part 2; wherein, the outer side of the annular oil groove 101 extends towards the direction far away from the central line of the crankshaft eccentric part 2, and the inner side of the annular oil groove 101 extends towards the direction close to the central line of the crankshaft eccentric part 2; preferably, the width of the inside of the annular oil groove 101 and below the lower support surface of the crank eccentric 2 is 20% of the width of the lower support surface of the crank eccentric 2; preferably, the cross-sectional width of the annular oil groove 101 is 1.5 ± 0.5mm, and lubricating oil is stored in the annular oil groove 101.
The processing process comprises the following steps:
the lower bearing cover of the utility model can be processed and formed in a machining mode during processing, and can also be formed by a die during forming of a part blank; wherein, the cross-sectional shape structure of the annular oil groove 101 or the connecting chute 102 is not limited.
The working principle is as follows:
when the lower bearing cover of the utility model works, in the rotating process of the eccentric part of the crankshaft, lubricating oil forms an oil film between the lower support surface of the eccentric part of the crankshaft and the working end surface of the bearing cover body along with the rotating direction of the eccentric part of the crankshaft; meanwhile, lubricating oil in the oil groove of the bearing inner hole of the bearing cover body 11 simultaneously enters the annular oil groove 101 along the connecting inclined groove 102 along the rotating direction of the crankshaft eccentric part, and forms abnormal wear avoiding lubrication on the outer edge of the lower support surface of the crankshaft eccentric part; in the rotating process of the eccentric crankshaft, oil in the annular oil groove dynamically enters from the connecting chute and then flows out from the oil groove in the inner hole of the lower bearing to form dynamic lubrication; the utility model discloses in, with the lower supporting surface outside edge of 2 crankshaft eccentric parts being located oil groove center part, effectively avoid the unusual friction of mechanism's axle edge and lower bearing work terminal surface, effectively improve work efficiency, but reduce mechanism running power, improve compressor work efficiency.
The utility model also provides a compressor movement assembly, which comprises an upper bearing cover, a cylinder, a crankshaft, a rotor, a slip sheet and a lower bearing cover; the upper bearing cover is arranged at one end of the cylinder in a sealing manner, and the lower bearing cover is arranged at the other end of the cylinder in a sealing manner; the crankshaft, the said lower bearing cap adopts the lower bearing cap 1 of the utility model; the rotor is arranged in a compression cavity of the cylinder; the crankshaft is used for driving the rotor to rotate; the sliding sheet is connected with the rotor and used for dividing a compression cavity of the air cylinder into a high-pressure cavity and a low-pressure cavity.
The lower bearing cover and the compressor core assembly of the utility model are characterized in that the working end surface of the bearing cover body 11 is provided with an annular oil groove 101 and a connecting chute 102; the central position of the annular oil groove 101 is opposite to the outer side edge of the lower support surface of the crankshaft eccentric part 2; the connecting chute 102 is used for communicating the bearing inner hole oil groove with the annular oil groove 101; the working end face of the bearing effectively avoids the edge of the eccentric shaft, and the abnormal abrasion phenomenon is avoided.
In the utility model, the through hole between the connecting chute 102 and the bearing inner hole oil groove and the through hole between the connecting chute 102 and the annular oil groove 101 are adjusted to ensure that the extending direction of the central line of the connecting chute 102 is the same as the rotating direction of the crankshaft eccentric part 2; the connecting chute penetrates through the central lines of the inlet and the outlet and forms an included angle with the circle tangent of the inner diameter of the bearing, so that smooth oil path and smooth oil return are facilitated.
The above embodiment is only one of the embodiments that can realize the technical solution of the present invention, and the scope of the present invention is not limited only by the embodiment, but also includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention.
Claims (10)
1. A lower bearing cap, characterized by comprising a bearing cap body (11);
the working end face of the bearing cover body (11) is provided with an annular oil groove (101) and a connecting inclined groove (102); the annular oil groove (101) is a circular opening groove and is arranged right opposite to the outer side edge of the lower supporting surface of the crankshaft eccentric part (2);
connect chute (102) and set up between the internal diameter side of annular oil groove (101) and bearing cap body (11), the entrance point of connecting chute (102) and the bearing bore oil groove of bearing cap body (11) link up the setting, the exit end of connecting chute (102) with the inside wall of annular oil groove (101) link up the setting.
2. A lower bearing cap according to claim 1, characterized in that the centre line of the connecting chute (102) extends in the same direction as the direction of rotation of the crankshaft eccentric (2).
3. A lower bearing cap according to claim 1, characterized in that the outer edge of the lower supporting surface of the eccentric part (2) of the crankshaft is located directly above the centre line of the annular oil groove (101).
4. A lower bearing cap according to claim 1, characterized in that the angle between the inlet end centre line of the connecting chute (102) and the inner diameter circle tangent of the bearing cap body (11) is 0 ° -90 °; the included angle between the center line of the outlet end of the connecting chute (102) and the tangent of the inner diameter circle of the bearing cover body (11) is 0-90 degrees.
5. A lower bearing cap according to claim 1, characterized in that the cross-sectional width of the annular oil groove (101) is the same as the cross-sectional width of the connecting chutes (102), and the cross-sectional depth of the annular oil groove (101) is the same as the cross-sectional depth of the connecting chutes (102).
6. A lower bearing cap according to claim 1, characterized in that the centre line of the annular oil groove (101) coincides with the rotation trajectory of the lower support surface outer edge of the crankshaft eccentric (2); the outer side of the annular oil groove (101) extends towards the direction far away from the central line of the crankshaft eccentric part (2), and the inner side of the annular oil groove (101) extends towards the direction close to the central line of the crankshaft eccentric part (2).
7. A lower bearing cap according to claim 6, characterized in that the width of the inside of the annular oil groove (101) below the lower support surface of the eccentric part (2) of the crankshaft is 20% of the width of the lower support surface of the eccentric part (2) of the crankshaft.
8. A lower bearing cap according to claim 6, characterized in that the cross-sectional width of the annular oil groove (101) is 1.5 ± 0.5mm.
9. A lower bearing cap according to claim 1, characterized in that the annular oil groove (101) is filled with lubricating oil.
10. A compressor movement assembly is characterized by comprising an upper bearing cover, an air cylinder, a crankshaft, a rotor, a sliding vane and a lower bearing cover; the upper bearing cover is arranged at one end of the cylinder in a sealing manner, and the lower bearing cover is arranged at the other end of the cylinder in a sealing manner; a crankshaft, wherein the lower bearing cover is the lower bearing cover according to any one of claims 1 to 9; the rotor is arranged in a compression cavity of the cylinder; the crankshaft is used for driving the rotor to rotate; the sliding sheet is connected with the rotor and is used for dividing a compression cavity of the cylinder into a high-pressure cavity and a low-pressure cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223154101.3U CN218625112U (en) | 2022-11-24 | 2022-11-24 | Lower bearing cap and compressor movement assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223154101.3U CN218625112U (en) | 2022-11-24 | 2022-11-24 | Lower bearing cap and compressor movement assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218625112U true CN218625112U (en) | 2023-03-14 |
Family
ID=85450482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223154101.3U Active CN218625112U (en) | 2022-11-24 | 2022-11-24 | Lower bearing cap and compressor movement assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218625112U (en) |
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2022
- 2022-11-24 CN CN202223154101.3U patent/CN218625112U/en active Active
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