CN114530989A - Oil-cooled driving motor and assembling method thereof - Google Patents
Oil-cooled driving motor and assembling method thereof Download PDFInfo
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- CN114530989A CN114530989A CN202210192735.3A CN202210192735A CN114530989A CN 114530989 A CN114530989 A CN 114530989A CN 202210192735 A CN202210192735 A CN 202210192735A CN 114530989 A CN114530989 A CN 114530989A
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- 238000000034 method Methods 0.000 title claims description 15
- 238000001816 cooling Methods 0.000 claims abstract description 130
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000004087 circulation Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241000555745 Sciuridae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides an oil cooling driving motor which comprises a shell and a motor body arranged in the shell, wherein an inner oil sleeve is sleeved outside the motor body and comprises oil rings arranged at two ends of the motor body and a cooling part arranged between the two oil rings, the oil rings comprise a first oil ring and a second oil ring, the first oil ring and the cooling part are integrated, and the second oil ring and the cooling part are assembled parts; the inner oil sleeve is made of plastic; the cooling part is provided with a hollowed-out cooling oil way; an oil spraying area is arranged on the oil ring; the oil injection area is communicated with the cooling oil way through a connecting oil way; and cooling oil flows axially or circumferentially along the outer surface of the motor body on the cooling oil path to cool the motor body, enters the oil injection area through the connecting oil path, and is injected to two ends of the motor body through the oil injection holes.
Description
Technical Field
The invention relates to the technical field of driving motors, in particular to an oil-cooled driving motor and an assembling method thereof.
Background
At present, the motor is at the actual motion in-process, when being in the big moment of torsion of low-speed, the stator and the rotor of motor can send a large amount of heats, the radiating mode of motor is mostly seting up the spiral water runner in motor machine casing inside, flow through the circulation of water in the machine casing, and then realize the refrigerated effect of motor, there is motor stator winding (coil) in this kind of cooling mode, the rotor can't obtain direct cooling, the main source of generating heat of motor can not obtain effectual cooling, consequently, motor heat load is limited, and then it is limited to lead to the motor volume. And part of the water-cooled motor adopts an inner water jacket and an outer water jacket, but the cooling water is conductive and cannot be contacted with the stator and the rotor and sprayed, so that the inner water jacket is designed in a closed manner.
In order to improve the cooling efficiency of the motor in the prior art, a cooling mode of oil cooling type cooling has appeared, because the cooling oil has no conductivity, the cooling oil can be directly contacted with each heating source of the motor, each heating source of the motor is effectively cooled, under the same performance requirement, the oil cooling motor is compared with the traditional water cooling motor, the heat load is improved, the motor volume can be reduced, the power density is further improved, the cooling oil can simultaneously lubricate and cool the motor bearing, the service life of the motor is further prolonged, but the oil circuit structure is complex, the processing technology is complex, the oil circuit structure adopts the processing technologies of screw fastening, welding and the like, the structure of each part is complex, and the processing cost is high. And the oil-cooled motor generally adopts an integrated shell design, and oil circulation is realized by means of oil pipes, oil passages formed in the iron core, oil passages formed in the shell and the like.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide an oil-cooled driving motor with an inner sleeve structure for realizing oil cooling and an assembling method thereof.
The invention discloses an oil cooling driving motor, which comprises a shell and a motor body arranged in the shell, wherein an inner oil sleeve is sleeved outside the motor body and comprises oil rings arranged at two ends of the motor body and a cooling part arranged between the two oil rings, the oil rings comprise a first oil ring and a second oil ring, the first oil ring and the cooling part are integrated, and the second oil ring and the cooling part are assembly parts; the inner oil sleeve is made of plastic; the cooling part is provided with a hollowed-out cooling oil way, and the cooling oil way is axially or circumferentially distributed along the outer surface of the motor body; the oil ring is provided with an oil spraying area, and the oil spraying area is provided with a plurality of radially penetrating oil spraying holes for spraying cooling oil to two ends of the motor body; the oil spraying area is communicated with the cooling oil way through a connecting oil way; and cooling oil flows axially or circumferentially along the outer surface of the motor body on the cooling oil path to cool the motor body, enters the oil injection area through the connecting oil path, and is injected to two ends of the motor body through the oil injection hole.
Preferably, an opening is formed at one end of the cooling part connected with the second oil ring, and an axial first convex part is arranged on the motor body and is arranged in the opening; the shell is provided with a second convex part, the second convex part is sleeved outside the first convex part, and a screw is arranged in the first convex part and connected with the first convex part and the second convex part to fix the motor and the shell.
Preferably, a plurality of axial partition strips are arranged between the two oil rings, and the cooling oil path is formed between the two partition strips; each cooling oil way is communicated with the connecting oil way, and the cooling oil ways and the connecting oil ways form a baffling type cooling channel along the outer surface of the motor body; one or more connecting oil ways are communicated with the oil injection area and used for conducting cooling oil to the oil injection area; the partition strip is provided with a circumferential first reinforcing rib, and a gap exists between the first reinforcing rib and the motor body.
Preferably, a circumferential spiral type partition strip is arranged between the two oil rings, and a circumferential spiral type cooling channel is formed on the outer surface of the motor body; a support rod is further arranged between the two oil rings and connected with the partition strip; and a gap is reserved between the support rod and the motor body.
Preferably, a circumferential reserved channel is arranged between the two oil rings, a plurality of axial partition strips are respectively arranged between the reserved channel and the two oil rings, and the cooling oil path is formed between the two partition strips; and cooling oil simultaneously flows to the cooling oil passages on two sides through the reserved passage and respectively flows to the oil rings on two sides through the connecting oil passages.
Preferably, two sides of the reserved passage are provided with stop strips to isolate the reserved passage from the cooling oil path; an opening is formed in the blocking strip, and the cooling oil way is communicated with the reserved channel through the opening; the width of the reserve channel is smaller than that of the barrier strip.
Preferably, an axial first oil inlet channel and a radial second oil inlet channel are arranged on the shell, one end of the first oil inlet channel is connected with the outside of the shell, the other end of the first oil inlet channel is connected with the second oil inlet channel, and the second oil inlet channel is connected with the cooling oil path; and cooling oil enters the cooling oil way from the outside through the first oil inlet channel and the second oil inlet channel in sequence.
Preferably, one of the oil rings at the two ends is provided with a flange, and the inner oil jacket is connected with the shell through bolts by the flange.
Preferably, the oil ring, which is not provided with the flange, of the oil rings at the two ends is provided with a limiting boss, the shell is provided with a limiting groove, and the limiting boss is arranged in the limiting groove to limit circumferential movement of the inner oil sleeve.
The invention also discloses an assembly method of the oil cooling driving motor, which is used for assembling the oil cooling driving motor and comprises the following steps: assembling the inner oil jacket into the shell in a clearance mode, enabling the first convex part to be placed in the second convex part, and fixedly connecting the first convex part and the second convex part through screws; then the inner oil sleeve is in clearance fit with the motor body, and the first convex part is arranged in the opening; sleeving a second oil ring outside the motor body, and enabling the second oil ring to be communicated with the cooling part; and arranging an end cover outside the second oil ring, and fixedly connecting the end cover and the shell through bolts.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the inner oil sleeve realizes direct contact between the cooling oil and the motor body, namely the stator, and improves the heat exchange efficiency; the oil ring at one end is split, so that the clearance fit between the inner oil sleeve and the motor body can be realized, and the motor body and the inner oil sleeve are not assembled by a hot sleeve process, so that the oil ring is suitable for the inner oil sleeve made of plastic materials.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of an oil-cooled driving motor provided by the invention;
fig. 2 is a schematic view illustrating a flow direction of cooling oil in the first embodiment of the oil-cooled driving motor according to the present invention;
FIG. 3 is an axial cross-sectional view of a first embodiment of an oil-cooled drive motor provided by the present invention;
fig. 4 is an enlarged structural view of a circled portion of fig. 3 of the oil-cooled driving motor provided by the present invention;
fig. 5 is an exploded view of the assembly of a first embodiment of an oil-cooled drive motor provided by the present invention;
fig. 6 is a schematic structural view of a second embodiment of an inner oil ring of an oil-cooled drive motor according to the present invention;
fig. 7 is a schematic structural diagram of a third embodiment of an inner oil ring of an oil-cooled driving motor according to the present invention.
Wherein: 1-cooling oil path, 2-oil spray hole, 3-connecting oil path, 4-partition strip, 5-groove, 6-sealing ring, 7-first reinforcing rib, 8-first oil ring, 9-second oil ring, 10-shell, 11-motor body and 12-inner oil sleeve.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1-5, the present invention discloses an oil-cooled driving motor, which includes a housing 10 and a motor body 12 disposed in the housing 10, wherein the motor body 12 includes a stator and a rotor inside the stator. The invention provides an inner oil jacket 11 which is sleeved outside a motor body 12, namely a stator, and the stator is cooled through the structure of the inner oil jacket 11.
The inner oil sleeve 11 comprises an oil ring and a cooling part between the two oil rings, the oil ring comprises a first oil ring 8 and a second oil ring 9, the first oil ring 8 and the cooling part are integrated, the second oil ring 9 and the cooling part are assembly parts, the oil ring at one end is split, the gap fit between the inner oil sleeve 11 and the motor body 12 can be realized, the motor body 12 and the inner oil sleeve 11 do not need to be assembled through a hot sleeve process, and therefore the oil ring is suitable for the inner oil sleeve 11 made of plastic materials.
The oil rings are arranged at two ends of the stator and used for cooling the two ends of the stator, and the cooling part is used for cooling the middle area between the two ends of the stator.
The cooling part is provided with a hollowed-out cooling oil circuit 1, which can be understood as a frame type or squirrel cage type structure. Because the inner oil jacket 11 is in direct contact with the surface of the stator, the hollowed-out part forms a circulation path of cooling oil. Specifically, the cooling oil path 1 of the cooling portion is distributed axially or circumferentially along the outer surface of the motor body 12, and the two distribution forms can realize the full coverage of the surface of the stator, so that the full coverage cooling of the surface of the stator is realized.
Specifically, an oil spraying area is arranged on the oil ring, and a plurality of radially penetrating oil spraying holes 2 are formed in the oil spraying area and used for spraying cooling oil to two ends of the motor body 12.
The oil spraying area is communicated with the cooling oil path 1 through a connecting oil path 3, and the connecting oil path 3 can be understood as an open channel for communicating the oil spraying area with the cooling oil path 1. The number of the connecting oil passages 3 can be one or more, and each end is provided with at least one oil injection area to communicate the oil injection areas at the two ends.
The cooling oil circulates axially or circumferentially along the outer surface of the motor body 12 on the cooling oil path 1 to cool the motor body 12, and enters the oil injection area through the connecting oil path 3 and is injected to the two ends of the motor body 12 through the oil injection hole 2.
One end of the second oil ring 9 facing the stator is provided with a buffer layer made of soft materials, and the buffer layer and the second oil ring 9 are processed by adopting a double-shot injection molding process.
Preferably, the invention provides a connection mode among the cooling part, the second oil ring 9, the motor body 12 and the housing 10, that is, an opening is arranged at one end of the cooling part connected with the second oil ring 9, an axial first convex part is arranged on the motor body 12, and the first convex part is arranged in the opening; the casing 10 is provided with a second convex part, the second convex part is sleeved outside the first convex part, and the screw is arranged in the first convex part and connected with the first convex part and the second convex part to fix the motor and the casing 10.
In other embodiments, other connection methods may be adopted, and are not limited herein.
As for the structure of the cooling oil passage 1, three preferable embodiments are proposed in the present invention, but the structure of the cooling oil passage 1 is not limited thereto.
In the first embodiment, referring to fig. 1-5, a plurality of axial partition strips 4 are arranged between two oil rings, and a cooling oil path 1 is formed between the two partition strips 4; each cooling oil path 1 is communicated with the connecting oil path 3, and the cooling oil path 1 and the connecting oil path 3 form a baffling type cooling channel along the outer surface of the motor body 12.
In the present embodiment, a connecting oil passage 3 communicates with the oil injection zone for conducting cooling oil to the oil injection zone. In other embodiments, a plurality of connecting oil passages 3 may be provided to communicate with the oil injection region.
Preferably, in this embodiment, the partition strip 4 is further provided with a circumferential first rib 7, and a gap exists between the first rib 7 and the motor body 12, and the gap is used for communicating the cooling oil path 1, so as to prevent the cooling oil path 1 from being blocked by the first rib 7.
In the second embodiment, referring to fig. 6, a circumferentially spiral partition strip 4 is arranged between two oil rings to form a circumferentially spiral cooling channel on the outer surface of the motor body 12.
Preferably, in this embodiment, an axial second reinforcing rib is further disposed between the two oil rings, the second reinforcing rib is connected to the partition bar 4, and a gap exists between the second reinforcing rib and the motor body 12, so as to communicate the cooling oil path 1 and prevent the cooling oil path 1 from being blocked by the second reinforcing rib.
In the third embodiment, referring to fig. 7, a circumferential preformed channel is arranged between two oil rings, a plurality of axial partition strips 4 are respectively arranged between the preformed channel and the two oil rings, a cooling oil path 1 is formed between the two partition strips 4, and cooling oil flows to the cooling oil paths 1 on both sides through the preformed channel and flows to the oil rings on both sides through connecting oil paths 3, so that a parallel cooling oil path 1 with the preformed channel as a center is formed. Usually, the number of the reserved channels is one, but a plurality of reserved channels can be set to accelerate the flow guiding speed.
Preferably, two sides of the reserved passage are provided with stop strips to isolate the reserved passage from the cooling oil circuit 1, so that the reserved passage is filled with cooling oil firstly. The stop strip is provided with an opening, the cooling oil way 1 is communicated with the reserved passage through the opening, and oil in the reserved passage filled with the oil flows to the cooling oil way 1 through the opening.
It should be noted that, in order to ensure that oil flows to a single cooling oil path 1 all the time at the oil inlet position, it is necessary to ensure that the entire circumferential reserve passage is filled first, and therefore the width of the reserve passage needs to be set smaller than the width of the barrier strip.
The scheme of above-mentioned three kinds of different embodiments has realized different fluid circulations, in practical application, can set up according to demands such as flow resistance, motor generate heat.
In addition, in order to save materials and reduce the total weight of the drive system assembly, the partition bars 4 are usually subjected to a glue-drawing process, i.e. grooves 5 are provided, the shapes of the grooves 5 are different, and the square grooves 5 are adopted in the above embodiments.
Preferably, an axial first oil inlet channel and a radial second oil inlet channel are arranged on the casing 10, one end of the first oil inlet channel is connected with a cooling oil source outside the casing 10, the other end of the first oil inlet channel is connected with the second oil inlet channel, and the second oil inlet channel is connected with the cooling oil path 1. The cooling oil enters the cooling oil path 1 from an external cooling oil source through the first oil inlet channel and the second oil inlet channel in sequence.
Correspondingly, the flange is provided with an oil inlet and an oil return port.
It should be noted that, for convenience of processing, the second oil inlet channel is not radially processed from the inside of the casing 10, but is usually directly processed into a radial through hole at the outside of the casing 10, and a blocking piece is arranged at the outside of the casing 10 to block the second oil inlet channel, so as to form a single oil path of the first oil inlet channel and the second oil inlet channel.
Preferably, one of the oil rings at the two ends is provided with a flange, and the end without the flange is defined as a head, so that during installation, the head is installed into the housing 10, and then the inner oil jacket 11 is bolted to the housing 10 through the flange.
Preferably, the oil rings without flanges in the oil rings at the two ends are provided with limiting bosses, the housing 10 is provided with limiting grooves, and the limiting bosses are arranged in the limiting grooves to limit circumferential movement of the inner oil sleeve 11.
And one sides of the two oil rings, which are far away from the cooling oil path 1, are also provided with a sealing ring 6, and the sealing between the inner oil sleeve 11 and the shell 10 is realized through the sealing ring 6. The sealing ring 6 is usually an O-ring 6.
The invention also discloses an assembly method of the oil cooling driving motor, which is used for assembling the oil cooling driving motor and comprises the following steps:
assembling the inner oil sleeve 11 into the shell 10 in a clearance manner, placing the first convex part into the second convex part, and fixedly connecting the first convex part and the second convex part through screws;
then the inner oil jacket 11 is in clearance fit with the motor body 12, and the first convex part is arranged in the opening;
sleeving the second oil ring 9 outside the motor body 12, and enabling the second oil ring 9 to be communicated with the cooling part;
and finally, arranging an end cover outside the second oil ring 9, and fixedly connecting the end cover with the shell 10 through bolts.
It should be noted that, the sequence of the steps of the method is not limited to the above description, as long as the oil-cooled driving motor can be assembled based on the above structure.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. An oil cooling driving motor is characterized by comprising a shell and a motor body arranged in the shell, wherein an inner oil sleeve is sleeved outside the motor body and comprises oil rings arranged at two ends of the motor body and a cooling part arranged between the two oil rings, the oil rings comprise a first oil ring and a second oil ring, the first oil ring and the cooling part are integrated, and the second oil ring and the cooling part are assembled parts; the inner oil sleeve is made of plastic;
the cooling part is provided with a hollowed-out cooling oil way, and the cooling oil way is axially or circumferentially distributed along the outer surface of the motor body;
the oil ring is provided with an oil spraying area, and the oil spraying area is provided with a plurality of radially penetrating oil spraying holes for spraying cooling oil to two ends of the motor body; the oil spraying area is communicated with the cooling oil way through a connecting oil way;
and cooling oil flows axially or circumferentially along the outer surface of the motor body on the cooling oil path to cool the motor body, enters the oil injection area through the connecting oil path, and is injected to two ends of the motor body through the oil injection hole.
2. The oil-cooled driving motor according to claim 1, wherein an opening is provided at one end of the cooling portion connected to the second oil ring, and a first axial protrusion is provided on the motor body and provided in the opening;
the shell is provided with a second convex part, the second convex part is sleeved outside the first convex part, and a screw is arranged in the first convex part and connected with the first convex part and the second convex part to fix the motor and the shell.
3. The oil-cooled driving motor of claim 1, wherein a plurality of axial partition strips are arranged between the two oil rings, and the cooling oil path is formed between the two partition strips;
each cooling oil way is communicated with the connecting oil way, and the cooling oil ways and the connecting oil ways form a baffling type cooling channel along the outer surface of the motor body;
one or more connecting oil ways are communicated with the oil injection area and used for conducting cooling oil to the oil injection area;
the partition strip is provided with a circumferential first reinforcing rib, and a gap exists between the first reinforcing rib and the motor body.
4. The oil-cooled driving motor according to claim 1, wherein a circumferentially spiral type partition strip is provided between the two oil rings, and a circumferentially spiral type cooling channel is formed on an outer surface of the motor body;
a support rod is further arranged between the two oil rings and connected with the partition strip;
and a gap is reserved between the support rod and the motor body.
5. The oil-cooled driving motor according to claim 1, wherein a circumferential reserved channel is arranged between the two oil rings, a plurality of axial partition strips are respectively arranged between the reserved channel and the two oil rings, and the cooling oil path is formed between the two partition strips;
and cooling oil simultaneously flows to the cooling oil passages on two sides through the reserved passage and respectively flows to the oil rings on two sides through the connecting oil passages.
6. The oil-cooled driving motor according to claim 5, wherein barrier strips are arranged on two sides of the reserved passage to isolate the reserved passage from the cooling oil path;
an opening is formed in the blocking strip, and the cooling oil way is communicated with the reserved channel through the opening;
the width of the reserve channel is smaller than that of the barrier strip.
7. The oil-cooled driving motor according to claim 1, wherein an axial first oil inlet channel and a radial second oil inlet channel are arranged on the housing, one end of the first oil inlet channel is connected with the outside of the housing, the other end of the first oil inlet channel is connected with the second oil inlet channel, and the second oil inlet channel is connected with the cooling oil path;
and cooling oil enters the cooling oil way from the outside through the first oil inlet channel and the second oil inlet channel in sequence.
8. The oil-cooled driving motor as claimed in claim 1, wherein one of the oil rings at both ends is provided with a flange through which the inner oil jacket is bolted to the housing.
9. The oil-cooled driving motor according to claim 8, wherein the oil ring, not provided with the flange, of the oil rings at both ends is provided with a limit boss, and the housing is provided with a limit groove in which the limit boss is placed to limit circumferential movement of the inner oil jacket.
10. An assembling method of an oil-cooled driving motor for assembling the oil-cooled driving motor according to any one of claims 1 to 9, comprising the steps of:
assembling the inner oil jacket into the shell in a clearance mode, enabling the first convex part to be placed in the second convex part, and fixedly connecting the first convex part and the second convex part through screws;
then the inner oil sleeve is in clearance fit with the motor body, and the first convex part is arranged in the opening;
sleeving a second oil ring outside the motor body, and enabling the second oil ring to be communicated with the cooling part;
and arranging an end cover outside the second oil ring, and fixedly connecting the end cover and the shell through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192735.3A CN114530989A (en) | 2022-03-01 | 2022-03-01 | Oil-cooled driving motor and assembling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192735.3A CN114530989A (en) | 2022-03-01 | 2022-03-01 | Oil-cooled driving motor and assembling method thereof |
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| CN114530989A true CN114530989A (en) | 2022-05-24 |
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| CN202210192735.3A Pending CN114530989A (en) | 2022-03-01 | 2022-03-01 | Oil-cooled driving motor and assembling method thereof |
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Citations (13)
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