CN219242611U - Bearing lubrication structure of electric drive assembly and electric drive assembly - Google Patents
Bearing lubrication structure of electric drive assembly and electric drive assembly Download PDFInfo
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- CN219242611U CN219242611U CN202320027235.4U CN202320027235U CN219242611U CN 219242611 U CN219242611 U CN 219242611U CN 202320027235 U CN202320027235 U CN 202320027235U CN 219242611 U CN219242611 U CN 219242611U
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- speed reducer
- branch
- shaft bearing
- bearing hole
- electric drive
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Abstract
The utility model discloses a bearing lubrication structure of an electric drive assembly and the electric drive assembly, wherein the bearing lubrication structure of the electric drive assembly comprises a body shell and a speed reducer box body, and the speed reducer box body is arranged on one side of the body shell; one side of the speed reducer box body, which faces the one-piece shell, is provided with a speed reducer side input shaft bearing hole, a speed reducer side intermediate shaft bearing hole and a speed reducer side differential shaft bearing hole; the oil circuit is arranged on the integrated shell and the speed reducer box body, and the inner cavity of the speed reducer box body is communicated with the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole and the speed reducer side differential shaft bearing hole through the oil circuit. The bearing lubrication structure of the electric drive assembly can meet the bearing lubrication requirement of high-speed operation.
Description
Technical Field
The utility model relates to the technical field of electric drive assemblies, in particular to a bearing lubrication structure of an electric drive assembly and the electric drive assembly.
Background
The speed reducer bearings all need good lubrication, and the purpose of the speed reducer bearings is to reduce friction and abrasion, cool, prevent rust and improve efficiency. The traditional lubrication mode of the reducer bearing mainly relies on gear splash lubrication, and oil enters a bearing hole through an oil groove to lubricate the bearing and the like.
However, the speed of the bearing of the speed reducer in the three-in-one electric drive assembly (namely, the motor controller, the motor and the speed reducer) is far higher than that of the traditional gearbox, and the bearing lubrication requirement of high-speed running, especially the limit working conditions such as low temperature, low-speed climbing and the like, cannot be met only by the traditional splash lubrication.
In view of the above-mentioned drawbacks, it is necessary to provide a new bearing lubrication structure of an electric drive assembly and an electric drive assembly.
Disclosure of Invention
The utility model mainly aims to provide a bearing lubrication structure of an electric drive assembly and the electric drive assembly, and aims to solve the problem that traditional splash lubrication cannot meet the bearing lubrication requirement of high-speed operation.
In order to achieve the above object, a bearing lubrication structure of an electric drive assembly according to the present utility model includes:
a one-piece shell;
the speed reducer box body is arranged on one side of the integral shell; a speed reducer side input shaft bearing hole, a speed reducer side intermediate shaft bearing hole and a speed reducer side differential shaft bearing hole are formed in one side, facing the one-piece shell, of the speed reducer box body;
the oil circuit is arranged on the integral shell and the speed reducer box body, and the inner cavity of the speed reducer box body is communicated with the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole and the speed reducer side differential shaft bearing hole through the oil circuit.
Preferably, the oil circuit includes first branch road, second branch road and the third branch road that communicate in proper order, first branch road set up in on the body shell, the reduction gear box is kept away from one side of body shell is equipped with the reduction gear back lid, the second branch road sets up on the reduction gear box, the third branch road sets up and covers behind the reduction gear, first branch road with the inner chamber intercommunication of reduction gear box, the third branch road respectively with reduction gear side input shaft bearing hole reduction gear side jackshaft bearing hole and reduction gear side differential mechanism shaft bearing hole intercommunication.
Preferably, the third branch includes a first branch and a second branch and a third branch communicating with the first branch, respectively, the first branch communicating with the second branch, the second branch communicating with the speed reducer side input shaft bearing hole and the speed reducer side intermediate shaft bearing hole, respectively, and the third branch communicating with the speed reducer side differential shaft bearing hole.
Preferably, the oil path further includes a fourth branch and a fifth branch, the fourth branch is disposed between the rear cover of the speed reducer and the speed reducer box, the fifth branch is disposed on the speed reducer box, and the third branch is communicated with the speed reducer-side differential shaft bearing hole through the fourth branch and the fifth branch.
Preferably, the speed reducer case is provided with a first oil groove corresponding to the speed reducer side differential oil seal, and the fifth branch is communicated with the first oil groove.
Preferably, the wall of the speed reducer side input shaft bearing hole has a second oil groove, and the wall of the speed reducer side intermediate shaft bearing hole has a third oil groove communicating with the second oil groove.
Preferably, the second oil groove has a size larger than that of the third oil groove;
and/or the number of the groups of groups,
the second oil groove and the third oil groove are oppositely arranged.
Preferably, the first branch comprises a fourth branch, a fifth branch and a sixth branch which are arranged on the integral shell and are sequentially communicated, the fourth branch is communicated with the inner cavity of the speed reducer box body, and the second branch is communicated with the sixth branch.
Preferably, the fourth branch path is arranged to extend in a first direction, the fifth branch path is arranged to extend in a second direction, the sixth branch path is arranged to extend in a third direction, and any two of the first direction, the second direction and the third direction are not identical in extending direction.
In addition, in order to achieve the above object, the present utility model also provides an electric drive assembly, which includes an oil displacement device, a speed reducer, a differential, and a bearing lubrication structure of the electric drive assembly as described above, wherein the speed reducer and the differential are both disposed in an inner cavity of the speed reducer case, and the oil displacement device is configured to drive lubricating oil in the inner cavity of the speed reducer case to flow into the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole, and the speed reducer side differential shaft bearing hole, respectively, through the oil paths.
In the technical scheme of the utility model, the bearing lubrication structure of the electric drive assembly comprises a body shell and a speed reducer box body, wherein the speed reducer box body is arranged at one side of the body shell; one side of the speed reducer box body, which faces the one-piece shell, is provided with a speed reducer side input shaft bearing hole, a speed reducer side intermediate shaft bearing hole and a speed reducer side differential shaft bearing hole; the oil circuit is arranged on the integrated shell and the speed reducer box body, and the inner cavity of the speed reducer box body is communicated with the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole and the speed reducer side differential shaft bearing hole through the oil circuit. According to the bearing lubrication structure of the electric drive assembly, the oil way is designed to be communicated with the input shaft bearing hole on the side of the speed reducer, the intermediate shaft bearing hole on the side of the speed reducer and the differential shaft bearing hole on the side of the speed reducer, so that oil can be synchronously and continuously conveyed to the input shaft bearing on the side of the speed reducer, the intermediate shaft bearing on the side of the speed reducer and the differential shaft bearing on the side of the speed reducer, an active lubrication effect is achieved, and compared with a traditional splash lubrication mode, the lubricating structure can meet the lubrication requirements of bearings under the working conditions of low temperature, low-speed climbing and the like, and can also compensate short plates where splash lubrication oil cannot meet the cooling and lubrication requirements under the working conditions of high rotating speed, high torque and the like.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a three-in-one electrically driven reduction gear assembly according to one embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a three-in-one electrically driven reduction gear assembly according to one embodiment of the present utility model;
FIG. 3 is a diagram showing a distribution of oil channels according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of the three-in-one electrically driven retarder chamber oil flow in accordance with one embodiment of the utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
The utility model provides a bearing lubrication structure of an electric drive assembly and the electric drive assembly, and aims to solve the problem that traditional splash lubrication cannot meet the bearing lubrication requirement of high-speed operation.
Referring to fig. 1 to 4, a bearing lubrication structure of an electric drive assembly includes a one-piece housing 1 and a speed reducer housing 2, the speed reducer housing 2 being mounted at one side of the one-piece housing 1; a speed reducer side input shaft bearing hole 21, a speed reducer side intermediate shaft bearing hole 22 and a speed reducer side differential shaft bearing hole 23 are formed in one side of the speed reducer case 2 facing the one-piece case 1; the oil passage 3 is formed in the integrated housing 1 and the speed reducer box 2, and the inner cavity of the speed reducer box 2 is communicated with the speed reducer side input shaft bearing hole 21, the speed reducer side intermediate shaft bearing hole 22 and the speed reducer side differential shaft bearing hole 23 through the oil passage 3.
The electric drive assembly is usually composed of a motor, a motor controller and a speed reducer, and the integral shell 1 in the scheme can be used for accommodating at least the motor and the motor controller and even can be used for accommodating a part of the speed reducer, so that some connecting devices can be reduced, the integration level is improved, and the integral shell 1 can comprise a box body of the motor and a box body of the motor controller and can also comprise a front end cover of the speed reducer if necessary.
According to the bearing lubrication structure of the electric drive assembly, the oil way 3 is designed, and the oil way 3 is communicated with the input shaft bearing hole 21 on the side of the speed reducer, the intermediate shaft bearing hole 22 on the side of the speed reducer and the differential shaft bearing hole 23 on the side of the speed reducer, so that oil can be synchronously and continuously conveyed to the input shaft bearing on the side of the speed reducer, the intermediate shaft bearing on the side of the speed reducer and the differential bearing on the side of the speed reducer, an active lubrication effect is achieved, compared with a traditional splash lubrication mode, the lubricating requirement of the bearing under the working conditions of low temperature, low speed climbing and the like can be met, and short plates where splash lubricating oil cannot meet the cooling and lubricating requirement can be made up under the working conditions of high rotating speed, high torque and the like.
In one embodiment, the oil path 3 includes a first branch 31, a second branch 32 and a third branch 33 that are sequentially communicated, the first branch 31 is opened on the one-piece shell 1, a rear cover 24 of the speed reducer is disposed on a side of the speed reducer box 2 away from the one-piece shell 1, the second branch 32 is opened on the speed reducer box 2, the third branch 33 is opened on the rear cover 24 of the speed reducer, the first branch 31 is communicated with an inner cavity of the speed reducer box 2, and the third branch 33 is respectively communicated with the input shaft bearing hole 21 of the speed reducer side, the intermediate shaft bearing hole 22 of the speed reducer side and the differential shaft bearing hole 23 of the speed reducer side.
Oil flows out from an outlet of an oil cooler arranged outside the speed reducer box body 2, sequentially flows through a first branch 31 on the integrated shell 1, a second branch 32 in the speed reducer box body 2, a third branch 33 in the speed reducer rear cover 24, enters the speed reducer side input shaft bearing hole 21 to actively lubricate the speed reducer side input shaft bearing, enters the speed reducer side intermediate shaft bearing hole 22 to actively lubricate the speed reducer side intermediate shaft bearing, and enters the speed reducer side differential shaft bearing hole 23 to actively lubricate the speed reducer side differential shaft bearing.
Further, the third branch 33 includes a first branch 331, and a second branch 332 and a third branch 333 that communicate with the first branch 331, respectively, the first branch 331 communicates with the second branch 32, the second branch 332 communicates with the speed reducer side input shaft bearing hole 21, the speed reducer side intermediate shaft bearing hole 22, respectively, and the third branch 333 communicates with the speed reducer side differential shaft bearing hole 23.
Oil flows through the second branch 32, the first branch 331 and the second branch 332 in sequence, enters the speed reducer side input shaft bearing hole 21 to actively lubricate the speed reducer side input shaft bearing, and enters the speed reducer side intermediate shaft bearing hole 22 to actively lubricate the speed reducer side intermediate shaft bearing; the oil flows through the second branch 32, the first branch 331, and the third branch 333 in this order, and enters the speed reducer side differential shaft bearing hole 23 to actively lubricate the speed reducer side differential shaft bearing.
In addition, in one embodiment, the oil passage 3 further includes a fourth branch 34 and a fifth branch 35 that are in communication with each other, the fourth branch 34 is provided between the rear cover 24 of the reduction gear and the reduction gear case 2, the fifth branch 35 is provided on the reduction gear case 2, and the third branch 333 is in communication with the reduction gear-side differential shaft bearing hole 23 through the fourth branch 34 and the fifth branch 35.
The oil sequentially flows through the third branch 333, the fourth branch 34 between the rear cover 24 and the case 2, and the fifth branch 35 provided in the case 2, and enters the differential shaft bearing hole 23 to actively lubricate the differential shaft bearing.
Wherein the reducer case is provided with a first oil groove 25 corresponding to the reducer-side differential oil seal 10, and a fifth branch 35 communicates with the first oil groove 25. The oil of the fifth branch 35 flows to the first oil groove 25, and actively lubricates the speed reducer side differential oil seal 10.
Further, in order to achieve various functions, the wall of the speed reducer side input shaft bearing hole 21 has a second oil groove 26, and the wall of the speed reducer side intermediate shaft bearing hole 22 has a third oil groove 27 communicating with the second oil groove 26.
The oil in the speed reducer side input shaft bearing hole 21 enters the speed reducer side intermediate shaft bearing hole 22 through the second oil groove 26 and the third oil groove 27, so that the speed reducer side intermediate shaft bearing can be actively lubricated.
In addition, in one embodiment, the second oil sump 26 is sized larger than the third oil sump 27 to facilitate entry of oil within the speed reducer side input shaft bearing bore 21 into the speed reducer side intermediate shaft bearing bore 22.
In another embodiment, the second oil groove 26 and the third oil groove 27 are disposed opposite to each other so that the oil in the speed reducer side input shaft bearing hole 21 enters the speed reducer side intermediate shaft bearing hole 22.
In one embodiment, the first branch 31 includes a fourth branch 311, a fifth branch 312, and a sixth branch 313 that open on the one-piece housing 1 and communicate in this order, the fourth branch 311 communicates with the interior of the reduction gear box 2, and the second branch 32 communicates with the sixth branch 313. To facilitate the manufacture of the first branch 31, the first branch 31 includes a fourth branch 311, a fifth branch 312, and a sixth branch 313 that open in the one-piece housing 1 and communicate in this order, and oil in the inner chamber of the speed reducer case 2 flows in the fourth branch 311, the fifth branch 312, and the sixth branch 313 in this order.
Further, the fourth branch 311 extends in the first direction, the fifth branch 312 extends in the second direction, the sixth branch 313 extends in the third direction, and the extending directions of any two of the first direction, the second direction, and the third direction are not identical. To facilitate the manufacture of the first branch 31, the fourth branch 311 is opened along the first direction, the fifth branch 312 is opened along the second direction, and the sixth branch 313 is opened along the third direction, wherein the extending directions of any two of the first direction, the second direction and the third direction are not consistent.
In the three-in-one electric drive assembly structure of an embodiment, oil flows out from an outlet of an oil cooler arranged outside a speed reducer box 2, sequentially flows through a fourth branch 311, a fifth branch 312 and a sixth branch 313 in a one-piece shell 1, a second branch 32 in the speed reducer box 2, and enters a speed reducer side input shaft bearing hole 21 to actively lubricate a speed reducer side input shaft bearing through a first branch 331 and a second branch 332 in a speed reducer rear cover 24; subsequently, the oil flows through the second oil groove 26 and the third oil groove 27, and enters the speed reducer side intermediate shaft bearing hole 22, and actively lubricates the speed reducer side intermediate shaft bearing.
The oil flows out from the outlet of the oil cooler provided outside the speed reducer case 2, and flows through the fourth branch 311, the fifth branch 312, and the sixth branch 313 of the oil passage in the integrated housing 1, the second branch 32 in the speed reducer case 2, the first branch 331 and the third branch 333 in the speed reducer rear cover 24, the fourth branch 34 is joined to the speed reducer case 2 and the speed reducer rear cover 24, and the fifth branch 35 in the speed reducer case 2 enters the speed reducer side differential bearing hole and differential oil seal hole first oil groove 25, and actively lubricates the speed reducer side differential bearing and the differential oil seal.
The oil flows through the first branch 331 in the rear cover 24, and is split into each bearing hole by the second branch 332 and the third branch 333, so that the input shaft bearing on the speed reducer side, the intermediate shaft bearing on the speed reducer side, the differential bearing on the speed reducer side, and the differential oil seal can be actively lubricated simultaneously and continuously.
In addition, the utility model also provides an electric drive assembly, which comprises an oil displacement device, a speed reducer, a differential mechanism and the bearing lubrication structure of the electric drive assembly, wherein the speed reducer and the differential mechanism are arranged in the inner cavity of the speed reducer box body 2, and the oil displacement device is used for driving lubricating oil in the inner cavity of the speed reducer box body 2 to flow into the input shaft bearing hole 21 on the speed reducer side, the intermediate shaft bearing hole 22 on the speed reducer side and the differential shaft bearing hole 23 on the speed reducer side respectively through the oil way 3. The specific structure of the bearing lubrication structure of the electric drive assembly in the electric drive assembly refers to the above embodiment, and because the electronic device adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A bearing lubrication structure for an electric drive assembly, comprising:
a one-piece shell;
the speed reducer box body is arranged on one side of the integral shell; a speed reducer side input shaft bearing hole, a speed reducer side intermediate shaft bearing hole and a speed reducer side differential shaft bearing hole are formed in one side, facing the one-piece shell, of the speed reducer box body;
the oil circuit is arranged on the integral shell and the speed reducer box body, and the inner cavity of the speed reducer box body is communicated with the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole and the speed reducer side differential shaft bearing hole through the oil circuit.
2. The bearing lubrication structure of an electric drive assembly according to claim 1, wherein the oil path includes a first branch, a second branch and a third branch which are sequentially communicated, the first branch is opened on the one body shell, a rear cover of the speed reducer is arranged on one side of the speed reducer box body away from the one body shell, the second branch is opened on the speed reducer box body, the third branch is opened on the rear cover of the speed reducer, the first branch is communicated with an inner cavity of the speed reducer box body, and the third branch is respectively communicated with the input shaft bearing hole on the speed reducer side, the intermediate shaft bearing hole on the speed reducer side and the differential shaft bearing hole on the speed reducer side.
3. The bearing lubrication structure of an electric drive assembly according to claim 2, wherein the third branch includes a first branch and second and third branches communicating with the first branch, respectively, the first branch communicating with the second branch, the second branch communicating with the speed reducer side input shaft bearing hole, the speed reducer side intermediate shaft bearing hole, respectively, and the third branch communicating with the speed reducer side differential shaft bearing hole.
4. The bearing lubrication structure of an electric drive assembly according to claim 3, wherein the oil passage further includes a fourth branch and a fifth branch that are communicated with each other, the fourth branch being provided between the rear cover of the reduction gear and the reduction gear case, the fifth branch being provided on the reduction gear case, the third branch being communicated with the reduction gear-side differential shaft bearing hole through the fourth branch and the fifth branch.
5. The bearing lubrication structure of an electric drive assembly according to claim 4, wherein the speed reducer case is provided with a first oil groove corresponding to a speed reducer-side differential oil seal, and the fifth branch is in communication with the first oil groove.
6. The bearing lubrication structure of an electric drive assembly according to any one of claims 1 to 5, wherein a wall of the speed reducer side input shaft bearing hole has a second oil groove, and a wall of the speed reducer side intermediate shaft bearing hole has a third oil groove communicating with the second oil groove.
7. The bearing lubrication structure of an electric drive assembly of claim 6, wherein the second oil sump has a size that is larger than the size of the third oil sump;
and/or the number of the groups of groups,
the second oil groove and the third oil groove are oppositely arranged.
8. An electric drive assembly bearing lubrication arrangement as claimed in any one of claims 2 to 5, wherein the first branch comprises a fourth, fifth and sixth branch opening on the unitary housing and communicating in sequence, the fourth branch communicating with the interior cavity of the reducer housing, the second branch communicating with the sixth branch.
9. The bearing lubrication structure of an electric drive assembly of claim 8, wherein the fourth branch extends in a first direction, the fifth branch extends in a second direction, the sixth branch extends in a third direction, and the directions of extension of any two of the first, second, and third directions are not uniform.
10. An electric drive assembly, characterized in that the electric drive assembly comprises an oil displacement device, a speed reducer, a differential gear and the bearing lubrication structure of the electric drive assembly according to any one of claims 1 to 9, wherein the speed reducer and the differential gear are both arranged in an inner cavity of a speed reducer box body, and the oil displacement device is used for driving lubricating oil in the inner cavity of the speed reducer box body to flow into an input shaft bearing hole on the speed reducer side, an intermediate shaft bearing hole on the speed reducer side and a differential shaft bearing hole on the speed reducer side respectively through oil ways.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320027235.4U CN219242611U (en) | 2023-01-05 | 2023-01-05 | Bearing lubrication structure of electric drive assembly and electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320027235.4U CN219242611U (en) | 2023-01-05 | 2023-01-05 | Bearing lubrication structure of electric drive assembly and electric drive assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219242611U true CN219242611U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320027235.4U Active CN219242611U (en) | 2023-01-05 | 2023-01-05 | Bearing lubrication structure of electric drive assembly and electric drive assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219242611U (en) |
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2023
- 2023-01-05 CN CN202320027235.4U patent/CN219242611U/en active Active
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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215104 No. 52, tiandang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |