CN209892405U - Crankshaft and compressor - Google Patents
Crankshaft and compressor Download PDFInfo
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- CN209892405U CN209892405U CN201920734681.2U CN201920734681U CN209892405U CN 209892405 U CN209892405 U CN 209892405U CN 201920734681 U CN201920734681 U CN 201920734681U CN 209892405 U CN209892405 U CN 209892405U
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- 239000003921 oil Substances 0.000 description 22
- 238000005192 partition Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003578 releasing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a crankshaft and a compressor, wherein the crankshaft comprises a long shaft section; a short shaft section; the eccentric circular section is arranged between the long shaft section and the short shaft section and comprises an eccentric part and a bottom opposite to the eccentric part, the eccentric circular section divides the side wall of the long shaft section into a first side wall and a second side wall through the axial sections of the eccentric part and the bottom, and the eccentric circular section divides the side wall of the short shaft section into a third side wall and a fourth side wall through the axial sections of the eccentric part and the bottom; the first side wall and/or the second side wall are/is provided with a first groove which extends along the axial direction of the long shaft section; and/or the third side wall and/or the fourth side wall are/is provided with a second groove which extends along the axial direction of the short shaft section.
Description
Technical Field
The utility model relates to a compressor technical field especially relates to a bent axle and compressor.
Background
The compressor is an indispensable part in household electrical appliances, refrigerators and air conditioners, and the pump body mechanism is an important component of the compressor and mainly comprises a rotor part, a crankshaft, an upper flange and a lower flange.
The pump body mechanism of the existing compressor comprises a crankshaft which plays a role in supporting and power transmission, and the crankshaft is abraded in the operation process, particularly under the long-term operation of a heavy-load working condition, so that the reliability of the crankshaft is reduced.
SUMMERY OF THE UTILITY MODEL
Based on this, to the problem that the crankshaft wears when traditional compressor is used, reduces the reliability of crankshaft, proposed a bent axle and compressor, this bent axle and compressor are when using, and the wearing and tearing volume of bent axle is lower, and the operational reliability is higher.
The specific technical scheme is as follows:
in one aspect, the present application relates to a crankshaft comprising: a long shaft section; a short shaft section; the eccentric circular section is arranged between the long shaft section and the short shaft section and comprises an eccentric part and a bottom opposite to the eccentric part, the eccentric circular section divides the side wall of the long shaft section into a first side wall and a second side wall through the axial sections of the eccentric part and the bottom, and the eccentric circular section divides the side wall of the short shaft section into a third side wall and a fourth side wall through the axial sections of the eccentric part and the bottom; the first side wall and/or the second side wall are/is provided with a first groove which extends along the axial direction of the long shaft section; and/or the third side wall and/or the fourth side wall are/is provided with a second groove which extends along the axial direction of the short shaft section.
When the crankshaft is used, the first groove is formed in the first side wall and/or the second side wall, the second groove is formed in the third side wall and/or the fourth side wall, the first groove extends along the axial direction of the long shaft section, and the second groove extends along the axial direction of the short shaft section; further, because the crankshaft is subjected to comprehensive acting force of gas force and crankshaft torque in the operation process, the long shaft section has a serious eccentric wear phenomenon on the first side wall or the second side wall, namely, the first side wall or the second side wall is seriously worn, the short shaft section has a serious eccentric wear phenomenon on the third side wall or the fourth side wall, namely, the third side wall or the fourth side wall is seriously worn, the reliability of the operation of the crankshaft can be reduced due to the eccentric wear phenomenon, the abnormal rise of power is brought due to the light eccentric wear degree, and the crankshaft meshing compressor cannot be used due to the heavy eccentric wear degree. Therefore, the first groove is arranged on the first side wall or the second side wall, and the second groove is arranged on the third side wall or the fourth side wall, so that the eccentric wear phenomenon can be pertinently reduced, and the reliability of the crankshaft operation is improved.
The technical solution is further explained below:
in one embodiment, the first groove is a first helical groove and/or the second groove is a second helical groove.
In one embodiment, the lead of the first helical groove and/or the second helical groove is 80mm/r to 130mm/r, and the lead angle of the first helical groove and/or the second helical groove is 40 ° to 60 °.
In one embodiment, the first groove and/or the second groove is a straight groove.
In one embodiment, the eccentric portion includes a first separation point which is an apex of the eccentric portion, the bottom portion includes a second separation point which is disposed opposite to the first separation point, an axial section of the eccentric circular segment passing through the first and second separation points divides the sidewall of the long shaft segment into the first and second sidewalls, and an axial section of the eccentric circular segment passing through the first and second separation points divides the sidewall of the short shaft segment into the third and fourth sidewalls.
In another aspect, the present application is directed to a compressor including the crankshaft of any of the above embodiments.
When the compressor is used, the first side wall and/or the second side wall are/is provided with the first groove, the third side wall and/or the fourth side wall are/is provided with the second groove, the first groove extends along the axial direction of the long shaft section, and the second groove extends along the axial direction of the short shaft section, so that the first groove and the second groove can play a role in oiling, further play a role in lubricating, and reduce the abrasion of the long shaft section or the short shaft section; further, because the crankshaft is subjected to comprehensive acting force of gas force and crankshaft torque in the operation process, the long shaft section has a serious eccentric wear phenomenon on the first side wall or the second side wall, namely, the first side wall or the second side wall is seriously worn, the short shaft section has a serious eccentric wear phenomenon on the third side wall or the fourth side wall, namely, the third side wall or the fourth side wall is seriously worn, the reliability of the operation of the crankshaft can be reduced due to the eccentric wear phenomenon, the abnormal rise of power is brought due to the light eccentric wear degree, and the crankshaft meshing compressor cannot be used due to the heavy eccentric wear degree. Therefore, the first groove is arranged on the first side wall or the second side wall, and the second groove is arranged on the third side wall or the fourth side wall, so that the eccentric wear phenomenon can be pertinently reduced, the operation reliability of the crankshaft is improved, and the operation reliability of the compressor is further improved.
The technical solution is further explained below:
in one embodiment, the compressor further comprises a first driving device, a rotating power output end of the first driving device is connected with a power input end of the crankshaft, the first groove is a first spiral groove, the second groove is a second spiral groove, and the spiral direction of the first spiral groove and/or the second spiral groove is opposite to the rotating direction of the rotating power output end of the first driving device.
In one embodiment, the compressor further comprises a second driving device, a rotary power output end of the second driving device is connected with a power input end of the crankshaft, the second groove is a second spiral groove, and the spiral direction of the second spiral groove is the same as the rotary direction of the rotary power output end of the second driving device.
In one embodiment, the compressor further comprises a first connecting piece, the long shaft section is provided with a first connecting part connected with the first connecting piece, and the first connecting part is provided with the first groove.
In one embodiment, the compressor further comprises a second connecting piece, the short shaft section is provided with a second connecting part connected with the second connecting piece, and the second connecting part is provided with the second groove.
Drawings
FIG. 1 is a schematic illustration of a crankshaft in one embodiment;
FIG. 2 is a schematic structural view of a crankshaft in another embodiment;
FIG. 3 is a schematic structural view of a crankshaft in another embodiment;
FIG. 4 is a top view of the crankshaft;
FIG. 5 is a schematic view of the installation of the crankshaft and the first connecting member;
FIG. 6 is a schematic view of the crankshaft and second link assembly.
Description of reference numerals:
100. the connecting structure comprises a crankshaft, 110, a long shaft section, 112, a first groove, 120, a short shaft section, 122, a second groove, 130, an eccentric circle section, 132, an eccentric part, 1322, a first separation point, 134, a bottom part, 1342, a second separation point, 140, a first relief groove, 150, a second relief groove, 200, a first connecting piece, 300 and a second connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be integral with the other element or can be removably connected to the other element.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Further, it is to be understood that, in the present embodiment, the positional relationships indicated by the terms "lower", "upper", "front", "rear", "left", "right", "inner", "outer", "top", "bottom", "one side", "the other side", "one end", "the other end", and the like are based on the positional relationships shown in the drawings; the terms "first," "second," and the like are used herein to distinguish one structural element from another. These terms are merely for convenience of description and simplicity of description, and are not to be construed as limiting the present invention.
As shown in fig. 1-3, a crankshaft 100 in one embodiment includes a long shaft segment 110; a short shaft section 120; the eccentric circular section 130 is arranged between the long shaft section 110 and the short shaft section 120, the eccentric circular section 130 comprises an eccentric part 132 and a bottom part 134 opposite to the eccentric part 132, the eccentric circular section 130 divides the side wall of the long shaft section 110 into a first side wall and a second side wall through the axial cross section of the eccentric part 132 and the bottom part 134, and the eccentric circular section 130 divides the side wall of the short shaft section 120 into a third side wall and a fourth side wall through the axial cross section of the eccentric part 132 and the bottom part 134; wherein, the first side wall and/or the second side wall is provided with a first groove 112 extending along the axial direction of the long shaft section 110; and/or the third side wall and/or the fourth side wall is provided with a second groove 122 extending along the axial direction of the short shaft section 120.
When the crankshaft 100 is in use, the first groove 112 is formed on the first side wall and/or the second side wall; and/or the third side wall and/or the fourth side wall are provided with second grooves 122, the first grooves 112 extend along the axial direction of the long shaft section 110, and the second grooves 122 extend along the axial direction of the short shaft section 120, so that the first grooves 112 and the second grooves 122 can play a role of oiling and further play a role of lubricating, and meanwhile, the stress of the long shaft section 110 and the short shaft section 120 can be correspondingly released by arranging the first grooves 112 and/or the second grooves 122, and the wear of the long shaft section 110 or the short shaft section 120 is reduced; further, because the crankshaft 100 is subjected to the combined acting force of the gas force and the torque of the crankshaft 100 during the operation process, the long shaft section 110 has a relatively serious eccentric wear phenomenon on the first side wall or the second side wall, that is, the first side wall or the second side wall is relatively severely worn, the short shaft section 120 has a relatively serious eccentric wear phenomenon on the third side wall or the fourth side wall, that is, the third side wall or the fourth side wall is relatively severely worn, the existence of the eccentric wear phenomenon can reduce the reliability of the operation of the crankshaft 100, the abnormal increase of the power is brought if the eccentric wear degree is light, and the crankshaft 100 cannot be used by the meshing compressor if the eccentric wear degree is heavy. Therefore, the first groove 112 is disposed on the first sidewall or the second sidewall, and the second groove 122 is disposed on the third sidewall or the fourth sidewall, so that the eccentric wear phenomenon can be purposefully reduced, and the operation reliability of the crankshaft 100 can be improved.
Wherein the first side wall and/or the second side wall is provided with a first groove 112; and/or the third sidewall and/or the fourth sidewall are provided with the second groove 122, including the following cases: the first groove 112 is formed in the first side wall and/or the second groove 112 is formed in the second side wall, the first groove 112 is formed in the first side wall and the second groove is formed in the second side wall, and/or the second groove 122 is formed in the third side wall and/or the second groove 122 is formed in the fourth groove 122 is formed in the third side wall and/or the fourth groove 122 is formed in the fourth side wall.
As shown in fig. 1 to 3, on the basis of the above-described embodiments, the first groove 112 is a first helical groove and/or the second groove 122 is a second helical groove. In this way, when the crankshaft 100 rotates, the resultant force applied to the oil drops rises along the first spiral groove or the second spiral groove, so the oil drops can flow along the first spiral groove and the second spiral groove, and the first spiral groove and the second spiral groove can ensure the lubricating effect of the long shaft section 110 and the short shaft section 120. In this embodiment, a first relief groove 140 is provided between the long axis segment 110 and the eccentric circle segment 130, an oil inlet of the first groove 112 is communicated with the first relief groove 140, an oil hole is provided on an inner wall of the first relief groove 140, the oil hole is communicated with a central oil hole of the crankshaft 100, and when in use, lubricating oil enters the first groove 112 along the oil hole; similarly, a second relief groove 150 is arranged between the short shaft section 120 and the eccentric circle section 130, an oil hole is formed in the inner wall of the second relief groove 150 and communicated with the central oil hole of the crankshaft 100, and when the crankshaft is in use, lubricating oil enters the second groove 122 along the oil hole.
As shown in FIG. 1, the number of the first spiral grooves can be multiple, and all the first spiral grooves are arranged at intervals, so that the oiling efficiency and the stress releasing effect are improved. Of course, the number of the second spiral grooves can be multiple, and all the second spiral grooves are arranged at intervals, so that the oiling efficiency and the stress releasing effect are improved.
Particularly, in the embodiment, the lead of the first spiral groove and/or the second spiral groove is 80mm/r-130mm/r, and the lead angle of the first spiral groove and/or the second spiral groove is 40-60 degrees. The oiling effect of the first spiral groove or the second spiral groove is better. Preferably, the helix angle of the first spiral groove and/or the second spiral groove is 45 degrees, and the oiling effect of the first spiral groove or the second spiral groove is optimal at the moment.
As shown in fig. 2, of course, in other embodiments, first groove 112 and/or second groove 122 are straight grooves. Thus, when the crankshaft 100 rotates, the lubricating oil can flow along the first groove 112 and the second groove 122, so as to lubricate the long shaft segment 110 and the short shaft segment 120, and improve the reliability of the crankshaft 100. In this embodiment, a first relief groove 140 is provided between the long axis segment 110 and the eccentric circle segment 130, an oil inlet of the first groove 112 is communicated with the first relief groove 140, an oil hole is provided on an inner wall of the first relief groove 140, the oil hole is communicated with a central oil hole of the crankshaft 100, and when in use, lubricating oil enters the first groove 112 along the oil hole; similarly, a second relief groove 150 is arranged between the short shaft section 120 and the eccentric circle section 130, an oil hole is formed in the inner wall of the second relief groove 150 and communicated with the central oil hole of the crankshaft 100, and when the crankshaft is in use, lubricating oil enters the second groove 122 along the oil hole.
As shown in fig. 4, based on any of the above embodiments, the eccentric portion 132 includes a first partition point 1322, the first partition point 1322 is an apex of the eccentric portion 132, the bottom portion 134 includes a second partition point 1342, the second partition point 1342 is disposed opposite to the first partition point 1322, an axial cross section of the eccentric circular segment 130 passing through the first partition point 1322 and the second partition point 1342 divides the sidewall of the long-axis segment 110 into a first sidewall and a second sidewall, and an axial cross section of the eccentric circular segment 130 passing through the first partition point 1322 and the second partition point 1342 divides the sidewall of the short-axis segment 120 into a third sidewall and a fourth sidewall. Because the eccentric circle segment 130 passes through the first and second side walls formed by dividing the side wall of the long shaft segment 110 by the axial cross section of the first and second partition points 1322 and 1342, the eccentric wear is severe during the operation of the crankshaft 100, and similarly, the severe eccentric wear phenomenon occurs on the third or fourth side wall, the first groove 112 is disposed on the first or second side wall, and the second groove 122 is disposed on the third or fourth side wall, so that the eccentric wear phenomenon can be purposefully reduced, and the operation reliability of the crankshaft 100 can be improved.
A compressor in one embodiment includes the crankshaft 100 of any of the above embodiments.
When the compressor is used, the first groove 112 is formed in the first side wall or the second side wall, and/or the second groove 122 is formed in the third side wall or the fourth side wall, the first groove 112 extends in the axial direction of the long shaft section 110, and the second groove 122 extends in the axial direction of the short shaft section 120, so that the first groove 112 and the second groove 122 can perform an oiling function, a lubricating function is further performed, and the wear of the long shaft section 110 or the short shaft section 120 is reduced; further, because the crankshaft 100 is subjected to the combined acting force of the gas force and the torque of the crankshaft 100 during the operation process, the long shaft section 110 has a relatively serious eccentric wear phenomenon on the first side wall or the second side wall, that is, the first side wall or the second side wall is relatively severely worn, the short shaft section 120 has a relatively serious eccentric wear phenomenon on the third side wall or the fourth side wall, that is, the third side wall or the fourth side wall is relatively severely worn, the existence of the eccentric wear phenomenon can reduce the reliability of the operation of the crankshaft 100, the abnormal increase of the power is brought if the eccentric wear degree is light, and the crankshaft 100 cannot be used by the meshing compressor if the eccentric wear degree is heavy. Therefore, the first groove 112 is disposed on the first sidewall or the second sidewall, and the second groove 122 is disposed on the third sidewall or the fourth sidewall, so that the eccentric wear phenomenon can be purposefully reduced, the operation reliability of the crankshaft 100 can be improved, and the operation reliability of the compressor can be further improved.
On the basis of the above embodiment, the compressor further includes a first driving device, a rotational power output end of the first driving device is connected with a power input end of the crankshaft 100, the first groove 112 is a first spiral groove, the second groove 122 is a second spiral groove, and a spiral direction of the first spiral groove and/or the second spiral groove is opposite to a rotational direction of the rotational power output end of the first driving device. Therefore, when the oiling device is used, the spiral direction of the first spiral groove and/or the second spiral groove is opposite to the rotating direction of the rotating power output end of the first driving device, at the moment, oil drops are subjected to a large acting force in the ascending direction of the first spiral groove and/or the second spiral groove when the oiling device operates, and therefore the oiling effect is good. Specifically, when first drive arrangement's rotation power take off along clockwise rotation, the helical direction of first helicla flute and/or second helicla flute is dextrorotation, and when first drive arrangement's rotation power take off along anticlockwise rotation, the helical direction of first helicla flute and/or second helicla flute is levogyration, so promote the efficiency of oiling of lubricating oil. Specifically, the first driving device may be an electric motor or a hydraulic cylinder or the like.
Of course, in another embodiment, the compressor further comprises a second driving device, a rotation power output end of the second driving device is connected with a power input end of the crankshaft 100, the second groove 122 is a second spiral groove, and a spiral direction of the second spiral groove is the same as a rotation direction of the rotation power output end of the second driving device. In this way, when the crankshaft 100 rotates, resultant force applied to oil droplets rises along the first spiral groove or the second spiral groove, so that the oil droplets can flow along the first spiral groove and the second spiral groove, and thus the first spiral groove and the second spiral groove can ensure a lubricating effect of the long shaft section 110 and the short shaft section 120. In particular, the second drive means may be an electric motor or a hydraulic cylinder or the like.
As shown in fig. 5, on the basis of any of the above embodiments, the compressor further includes a first connecting member 200, the long shaft section 110 is provided with a first connecting portion connected to the first connecting member 200, the first connecting portion is provided with a first groove 112, because the wear degree of the long shaft section 110 at the first connecting portion is large, the first groove 112 is provided at the first connecting portion, oil is applied to the first groove 112 and stress is released through the first groove 112, the wear of the first connecting portion is reduced, and the reliability of the crankshaft 100 is improved. Specifically, the first connector 200 may be a flange or a coupling.
As shown in fig. 6, on the basis of any of the above embodiments, the compressor further includes a second connecting member 300, the short shaft segment 120 is provided with a second connecting portion connected to the second connecting member 300, and the second connecting portion is provided with a second groove 122. Because the short shaft section 120 has a large degree of wear at the second connecting portion, the second connecting portion is provided with the second groove 122, and the second groove 122 is oiled and stress is released, so that the wear of the second connecting portion is reduced, and the reliability of the crankshaft 100 is improved. Specifically, the second connector 300 may be a flange or a coupling.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A crankshaft, comprising:
a long shaft section;
a short shaft section;
the eccentric circular section is arranged between the long shaft section and the short shaft section and comprises an eccentric part and a bottom opposite to the eccentric part, the eccentric circular section divides the side wall of the long shaft section into a first side wall and a second side wall through the axial sections of the eccentric part and the bottom, and the eccentric circular section divides the side wall of the short shaft section into a third side wall and a fourth side wall through the axial sections of the eccentric part and the bottom;
the first side wall and/or the second side wall are/is provided with a first groove which extends along the axial direction of the long shaft section; and/or the third side wall and/or the fourth side wall are/is provided with a second groove which extends along the axial direction of the short shaft section.
2. A crankshaft according to claim 1, wherein the first groove is a first helical groove and/or the second groove is a second helical groove.
3. A crankshaft according to claim 2, wherein the lead of the first helical groove and/or the second helical groove is 80mm/r to 130mm/r, and the lead angle of the first helical groove and/or the second helical groove is 40 ° to 60 °.
4. A crankshaft according to claim 1, wherein the first groove and/or the second groove is a straight groove.
5. A crankshaft according to any one of claims 1 to 4, wherein the eccentric portion comprises a first division point which is an apex of the eccentric portion, the bottom portion comprises a second division point which is located opposite to the first division point, an axial section of the eccentric circular segment passing through the first and second division points divides the side wall of the long shaft segment into the first and second side walls, and an axial section of the eccentric circular segment passing through the first and second division points divides the side wall of the short shaft segment into the third and fourth side walls.
6. A compressor, characterized by comprising a crankshaft according to any one of claims 1 to 5.
7. The compressor of claim 6, further comprising a first drive device, wherein a rotational power output end of the first drive device is connected to a power input end of the crankshaft, the first groove is a first helical groove, the second groove is a second helical groove, and a helical direction of the first helical groove and/or the second helical groove is opposite to a rotational direction of a rotational power output end of the first drive device.
8. The compressor of claim 6, further comprising a second drive device, a rotational power output end of the second drive device being connected to a power input end of the crankshaft, the second groove being a second helical groove having a helical direction that is the same as a rotational direction of a rotational power output end of the second drive device.
9. The compressor of claim 6, further comprising a first connecting member, wherein the long shaft section is provided with a first connecting portion connected with the first connecting member, and the first connecting portion is provided with the first groove.
10. The compressor of claim 6, further comprising a second connecting member, wherein the short shaft segment is provided with a second connecting portion connected with the second connecting member, and the second connecting portion is provided with the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734681.2U CN209892405U (en) | 2019-05-21 | 2019-05-21 | Crankshaft and compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920734681.2U CN209892405U (en) | 2019-05-21 | 2019-05-21 | Crankshaft and compressor |
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| CN209892405U true CN209892405U (en) | 2020-01-03 |
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| CN201920734681.2U Active CN209892405U (en) | 2019-05-21 | 2019-05-21 | Crankshaft and compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056496A (en) * | 2019-05-21 | 2019-07-26 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056496A (en) * | 2019-05-21 | 2019-07-26 | 珠海凌达压缩机有限公司 | Crankshaft and compressor |
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