CN217563419U - Driving motor and vehicle applying same - Google Patents

Abstract

An object of the utility model is to provide a driving motor and vehicle of using thereof to it can only lubricate bearing grease to solve among the prior art driving motor, causes the technical problem that motor speed is lower, bearing life-span is shorter. The vehicle comprises a vehicle body, a vehicle component and a transmission component, wherein the vehicle component and the transmission component are assembled on the vehicle body, and the transmission component comprises a driving motor. The driving motor comprises a motor shell and end covers assembled at two ends of the motor shell, oil lubrication grooves and oil supply channels communicated with the oil lubrication grooves are formed in the end covers at the two ends, and bearings on the end covers are located in the oil lubrication grooves on the end covers where the bearings are located; at least one of the end cover and the motor shell is provided with an oil return channel, an oil return port of the oil return channel is communicated with the inner cavity of the motor, and the oil return port is arranged at the bottom of the inner cavity of the motor; and the lubricating oil overflows from the oil lubricating groove, enters an oil return opening of the oil return channel through the inner cavity of the motor and flows out of the inner cavity of the motor through the oil return channel.

Description

Driving motor and vehicle applying same

Technical Field

The utility model relates to a motor lubrication technology field, concretely relates to driving motor and vehicle of using thereof.

Background

With the rapid development of the new energy power field, the requirements on the rotating speed and the performance of a driving motor on a vehicle are higher and higher, the highest rotating speed of the driving motor designed for the new energy vehicle can reach 12000 revolutions per minute generally, and the driving motor can be matched with a gearbox or a speed reducer when in use. The driving motor generally includes a motor housing having a rotating shaft therein, a stator and a rotor provided around the rotating shaft, and end caps sealed at both ends of the motor housing, and the rotating shaft is rotatably assembled in the motor housing through bearings provided in the end caps at both ends.

When the existing high-speed driving motor runs, lubricating grease is generally adopted to carry out grease lubrication on a rotating shaft of the motor and bearings at two ends of the rotating shaft. However, the grease lubricated driving motor has problems in operation and use that as the motor runs for a long time, the temperature of the bearing gradually rises to make grease easily overflow, and the maximum allowable rotating speed of the grease lubricated bearing is relatively low, so that the grease cannot be supplemented after the grease overflows, thereby affecting the operation conditions of the rotating shaft and the bearing, and the motor cannot meet the use requirements of the high-speed driving motor for new energy vehicles, and also cannot meet the design life of the bearing of the high-speed motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a driving motor to solve among the prior art driving motor and can only lubricate bearing grease, cause the technical problem that motor speed is lower, bearing life-span is shorter. Additionally, the utility model aims at still providing a vehicle to satisfy new forms of energy vehicle's driving motor demand.

In order to achieve the above object, the present invention provides a driving motor, which comprises:

a driving motor comprises a motor shell and end covers assembled at two ends of the motor shell, wherein a motor inner cavity is formed in the motor shell after the motor shell and the end covers are connected; the motor is characterized in that a rotating shaft is arranged in the motor cavity, a stator and a rotor are arranged in the motor cavity around the rotating shaft, the rotating shaft is rotatably assembled in the motor cavity through bearings arranged on end covers at two ends respectively, oil lubrication grooves and oil supply channels communicated with the oil lubrication grooves are arranged on the end covers at the two ends respectively, the oil lubrication grooves are used for storing lubricating oil, and the bearings on the end covers at the two ends are positioned in the oil lubrication grooves on the end covers where the bearings are positioned; at least one of the end cover and the motor shell is provided with an oil return channel, an oil return port of the oil return channel is communicated with the inner cavity of the motor, and the oil return port is arranged at the bottom of the inner cavity of the motor; and the lubricating oil overflows from the oil lubricating groove, enters an oil return opening of the oil return channel through the inner cavity of the motor and flows out of the inner cavity of the motor through the oil return channel.

Has the beneficial effects that: offer on the end cover of motor and supply oil pipe way and with the continuous oil lubrication groove of oil supply pipe way, go into the motor end cover with lubricating oil through supplying oil pipe way pump to carry out oil lubrication to the bearing that sets up in the end cover, the setting up of oil lubrication groove can make bearing and lubricating oil fully contact, avoids appearing lubricated insufficient condition. The lubricated lubricating oil falls back downwards into the inner cavity of the motor, falls into an oil return channel outside the inner cavity of the motor through an oil return port of an oil return pipeline, and finally flows out of the motor through an oil outlet of the oil return channel. Through the setting of whole oil lubrication oil circuit, make the motor bearing can obtain abundant oil lubrication, improved the life of bearing, simultaneously because lubricating oil is the closed loop that flows, heat on motor shaft and the bearing can also be taken away at the in-process that flows to lubricating oil, has played the effect of cooling indirectly, makes the motor can carry out high-speed rotation, has promoted the efficiency and the life of motor.

Preferably, the oil return passage is including locating the buffer memory chamber of motor casing bottom, the buffer memory chamber is used for holding the lubricating oil that flows out the motor inner chamber through the oil return opening of oil return passage. The buffer cavity is provided for the lubricating oil in the inner cavity of the motor to fall back through the oil return port, so that the lubricating oil collection after the completion of the lubricating work is facilitated.

Preferably, an impurity removing device is arranged in the cache cavity. The edulcoration device can get rid of the impurity in the lubricating oil of pivot, bearing and the motor inner chamber of flowing through, does benefit to the circulation of lubricating oil.

Preferably, the impurity removing device is an electromagnet. The electromagnet has good adsorption effect and can remove metal particles in the lubricating oil.

Preferably, an oil outlet of the oil return channel is arranged on the end cover, and the oil outlet is arranged at the bottom of the end cover; and a filter screen is arranged in the oil outlet and used for filtering lubricating oil discharged from the inner cavity of the motor. The filter screen can not only further filter the lubricating oil after the lubrication work is finished but also prevent impurities in the lubricating liquid flowing backwards and flowing backwards from entering the inner cavity of the motor.

Preferably, a part of the stator is located below the oil lubrication groove, so that the lubricating oil overflowing from the oil lubrication groove and falling down falls on the stator and then flows to the oil return channel. The lubricating liquid flows through the stator, and can also effectively cool the stator.

Preferably, a buffer cavity sealing plate is arranged at the lower end of the motor shell, and the buffer cavity sealing plate and the bottom of the motor shell are connected and sealed to form the buffer cavity; and the cache cavity sealing plate is provided with radiating fins. The arrangement of the radiating fins can quickly radiate the lubricating oil falling back to the cache cavity, so that the lubricating oil can be continuously used after the temperature of the lubricating oil is quickly reduced.

Preferably, the buffer cavity closing plate is detachably arranged below the motor shell through bolts. The bolt is a common connecting part, so that the cache cavity sealing plate can be conveniently connected and detached, and maintenance or inspection of each part in the oil return channel is facilitated.

Preferably, the extending direction of the motor rotating shaft is defined as a front-back direction, the end covers at two ends of the motor shell are a front end cover and a rear end cover, a bearing arranged in the front end cover is a front end cover bearing, and a bearing arranged in the rear end cover is a rear end cover bearing; the front end cover is provided with a front baffle, and the rear end cover is provided with a rear baffle; the front baffle is positioned behind the front end cover bearing, and an oil lubricating groove positioned on the front end cover is enclosed between the front baffle and the front end cover; the rear baffle is positioned in front of the rear end cover bearing, and an oil lubricating groove positioned on the rear end cover is defined between the rear baffle and the rear end cover; the front baffle is tightly propped against the outer ring of the front end cover bearing, and the front end cover bearing is fixed on the front end cover. The arrangement of the front baffle and the rear baffle enables more lubricating oil to be accumulated at two ends of the bearing, and the lubricating effect is further improved. And the outer ring of the front end cover bearing is fixed by the front baffle, so that the connection of the bearing is fastened, the matching is tight, and the stable operation of the rotating shaft is ensured.

The utility model provides a technical scheme of vehicle is:

a vehicle comprises a vehicle body and a power system, wherein the power system comprises a driving motor, the driving motor comprises a motor shell and end covers assembled at two ends of the motor shell, and a motor inner cavity is formed in the motor shell after the motor shell is connected with the end covers; the motor is characterized in that a rotating shaft is arranged in the motor cavity, a stator and a rotor are arranged in the motor cavity around the rotating shaft, the rotating shaft is rotatably assembled in the motor cavity through bearings arranged on end covers at two ends respectively, oil lubrication grooves and oil supply channels communicated with the oil lubrication grooves are arranged on the end covers at the two ends respectively, the oil lubrication grooves are used for storing lubricating oil, and the bearings on the end covers at the two ends are positioned in the oil lubrication grooves on the end covers where the bearings are positioned; at least one of the end cover and the motor shell is provided with an oil return channel, an oil return port of the oil return channel is communicated with the inner cavity of the motor, and the oil return port is arranged at the bottom of the inner cavity of the motor; and the lubricating oil overflows from the oil lubricating groove, enters an oil return opening of the oil return channel through the inner cavity of the motor and flows out of the inner cavity of the motor through the oil return channel.

Has the advantages that: through setting up the driving motor who has oil lubrication structure in the automobile body, make driving motor rotational speed promote, the performance improves, and the performance of vehicle also improves simultaneously. Offer on the end cover of motor and supply oil pipe way and with the continuous oil lubrication groove of oil supply pipe way, go into the motor end cover with lubricating oil through supplying oil pipe way pump to carry out oil lubrication to the bearing that sets up in the end cover, the setting up of oil lubrication groove can make bearing and lubricating oil fully contact, avoids appearing lubricated insufficient condition. The lubricated lubricating oil falls back downwards into the inner cavity of the motor, falls into an oil return channel outside the inner cavity of the motor through an oil return port of the oil return pipeline, and finally flows out of the motor through an oil outlet of the oil return channel. Through the setting of whole oil lubrication oil circuit, make the motor bearing can obtain abundant oil lubrication, improved the life of bearing, simultaneously because lubricating oil is the closed loop that flows, heat on motor shaft and the bearing can also be taken away at the in-process that flows to lubricating oil, has indirectly played the effect of cooling, makes the motor can carry out high-speed rotation, has promoted the efficiency and the life of motor.

Preferably, the oil return passage is including locating the buffer memory chamber of motor casing bottom, the buffer memory chamber is used for holding the lubricating oil that flows out the motor inner chamber through the oil return opening of oil return passage. The setting in buffer memory chamber supplies the lubricating oil in the motor inner chamber to fall back through the oil return opening, does benefit to the collection of lubricated work completion back lubricating oil.

Preferably, an impurity removing device is arranged in the cache cavity. The edulcoration device can get rid of the impurity in the lubricating oil of pivot, bearing and the motor inner chamber of flowing through, does benefit to the circulation of lubricating oil.

Preferably, the impurity removing device is an electromagnet. The adsorption effect of the electromagnet is good, and metal particles in the lubricating oil can be removed.

Preferably, an oil outlet of the oil return channel is arranged on the end cover, and the oil outlet is arranged at the bottom of the end cover; and a filter screen is arranged in the oil outlet and used for filtering lubricating oil discharged from the inner cavity of the motor. The filter screen can not only further filter the lubricating oil after the lubrication work is accomplished but also can prevent the impurity in the lubricating liquid of backward flow from getting into the motor inner chamber.

Preferably, a part of the stator is located below the oil lubrication groove, so that the lubricating oil overflowing from the oil lubrication groove and falling down falls on the stator and then flows to the oil return channel. The lubricating liquid flows through the stator, and can also effectively cool the stator.

Preferably, a buffer cavity sealing plate is arranged at the lower end of the motor shell, and the buffer cavity sealing plate and the bottom of the motor shell are connected and sealed to form the buffer cavity; and the cache cavity sealing plate is provided with radiating fins. The arrangement of the radiating fins can quickly radiate the lubricating oil falling back into the cache cavity, so that the lubricating oil can be continuously used after the temperature of the lubricating oil is quickly reduced.

Preferably, the buffer cavity closing plate is detachably arranged below the motor shell through bolts. The bolt is a common connecting part, so that the cache cavity sealing plate is convenient to connect and detach, and the maintenance or inspection of each part in the oil return channel is facilitated.

Preferably, the extending direction of the motor rotating shaft is defined as a front-back direction, the end covers at two ends of the motor shell are a front end cover and a rear end cover, a bearing arranged in the front end cover is a front end cover bearing, and a bearing arranged in the rear end cover is a rear end cover bearing; the front end cover is provided with a front baffle plate, and the rear end cover is provided with a rear baffle plate; the front baffle is positioned behind the front end cover bearing, and an oil lubricating groove positioned on the front end cover is enclosed between the front baffle and the front end cover; the rear baffle is positioned in front of the rear end cover bearing, and an oil lubricating groove positioned on the rear end cover is defined between the rear baffle and the rear end cover; the front baffle is tightly propped against the outer ring of the front end cover bearing, and the front end cover bearing is fixed on the front end cover. The arrangement of the front baffle and the rear baffle enables more lubricating oil to be accumulated at two ends of the bearing, and the lubricating effect is further improved. And the outer ring of the front end cover bearing is fixed by the front baffle plate, so that the connection of the bearing is tight, the matching is tight, and the stable operation of the rotating shaft is ensured.

Drawings

Fig. 1 is a cross-sectional view of an oil supply route in embodiment 1 of a driving motor provided by the present invention;

fig. 2 is a cross-sectional view of an oil return route in embodiment 1 of the driving motor provided by the present invention;

fig. 3 is a schematic partial view of a buffer cavity in embodiment 1 of the driving motor according to the present invention.

Description of the reference numerals:

1. a front end cover; 2. a rear end cap; 3. a motor housing; 4. a rotating shaft; 5. a front end cap bearing; 6. a rear end cap bearing; 7. a front baffle; 8. a tailgate; 9. an oil lubrication groove; 10. a heat dissipating fin; 11. a stator; 12. a rotor; 13. a motor water nozzle; 14. a housing water channel; 15. a cache cavity; 16. an inner cavity of the motor; 17. an oil inlet of the motor; 18. a housing oil passage; 19. a front end cover oil passage; 20. a rear end cover oil duct; 21. a plug; 22. an oil duct seal ring; 23. a cover plate bolt; 24. a filter screen; 25. a baffle bolt; 26. an oil return port; 27. a closing plate bolt; 28. a cache cavity sealing plate; 29. sealing rings are sealed; 30. an oil outlet; 31. an electromagnet; 32. and a magnet cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising a," 8230, "" etc. are not intended to exclude processes, methods, and the like, in which such elements are included.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

The present invention will be described in further detail with reference to examples.

The utility model provides a driving motor's embodiment 1:

as shown in fig. 1 to 3, the drive motor includes a motor housing 3, and a front end cover 1 and a rear end cover 2 fitted to front and rear ends of the motor housing 3. The front end cap 1 and the rear end cap 2 seal the front and rear of the motor housing 3 to form a sealed motor cavity 16 in the motor housing 3. The motor is characterized in that a rotating shaft 4 is arranged in the motor inner cavity 16 along the front-back direction, a front end cover bearing 5 is arranged in the front end cover 1, a rear end cover bearing 6 is arranged in the rear end cover 2, and the rotating shaft 4 is rotatably assembled in the motor inner cavity 16 through the matching of the front end cover bearing 5 and the rear end cover bearing 6. Wherein, the motor cavity 16 is also provided with a stator 11 and a rotor 12 which are arranged around the rotating shaft 4, and a motor water nozzle 13, a machine shell water channel 14 and other components which are arranged in the motor cavity 16. The structure and assembly of the stator 11, the rotor 12, the motor water nozzle 13, the casing water channel 14 and other components are the same as those of the driving motor in the prior art, and are not described again.

As shown in fig. 1, a motor oil inlet 17 which is horizontally penetrated backwards is formed in the bottom surface of the front end cover 1, a casing oil passage 18 which is penetrated backwards is formed in the bottom of the motor casing 3 corresponding to the motor oil inlet 17, the casing oil passage 18 is formed in the outer side of the casing water passage 14, the casing oil passage 18 horizontally extends backwards to the rear end cover 2, a rear end cover oil passage 20 which is vertically arranged upwards is formed in the rear end cover 2 corresponding to the casing oil passage 18, a front end cover oil passage 19 which is vertically arranged upwards is formed in the front end cover 1, and the front end cover oil passage 19 is communicated with the motor oil inlet 17. The respective bottom ends of the front end cover oil passage 19 and the rear end cover oil passage 20 are respectively provided with a plug 21, and the joint positions of the respective oil passages of the front end cover 1, the rear end cover 2 and the motor shell 3 are respectively provided with an oil passage sealing ring 22, so that the sealing performance of the oil passages is further ensured. The front-end cover oil passage 19 and the rear-end cover oil passage 20 each extend upward and communicate with a corresponding bearing at their respective positions. Specifically, the front-end-cover oil passage 19 extends upward and communicates with the front end of the front-end-cover bearing 5, and the rear-end-cover oil passage 20 extends upward and communicates with the rear end of the rear-end-cover bearing 6. When the lubricating oil is pumped to the motor oil inlet 17, the lubricating oil enters the motor housing 3 through the motor oil inlet 17, passes through the front end cover oil passage 19, the housing oil passage 18 and the rear end cover oil passage 20, and is finally conveyed upwards to the bearings at the two ends of the rotating shaft 4.

As shown in fig. 1, in order to make the lubricating oil delivered to the two bearings sufficiently infiltrate the bearings to enhance the lubricating effect of the bearings, the rear end of the front end cover bearing 5 is provided with a front baffle 7, the front end of the rear bearing is provided with a rear baffle 8, the front baffle 7 and the front end cover 1 enclose an oil lubricating groove 9 which is positioned on the front end cover 1 and can store the lubricating oil, the oil lubricating groove 9 which is positioned in the rear end cover 2 and can store the lubricating oil is formed between the rear baffle 8 and the rear end cover 2, the two bearings are both positioned in the oil lubricating groove 9 on the end cover where the two bearings are positioned, and when the lubricating oil is delivered to one end of the bearing, the lubricating oil can be stored in the oil lubricating groove 9 where the bearing is positioned. Wherein, the front baffle 7 and the rear baffle 8 are fixed by baffle bolts 25 penetrating from the respective end covers. The bearing inner ring is positioned in the oil lubrication groove 9, so that the lubricating oil can submerge the inner ring of the bearing, and the bearing is fully lubricated. When the lubricating liquid in the oil lubricating groove 9 is stored and overflowed, the lubricating oil in the front end cover 1 falls back downwards through the front baffle 7, and the lubricating oil in the rear end cover 2 falls back downwards through the rear baffle 8. The front baffle 7 is designed to be an L-shaped plate, one side of the front baffle 7 forms a vertical baffle for blocking lubricating oil, and the other side of the front baffle 7 is pressed and attached to the outer ring of the front end cover bearing 5, so that the front end cover bearing 5 is fixed on the front end cover 1, and the stable operation of the rotating shaft 4 is ensured.

As shown in fig. 1 and 2, the positions of the front and rear ends of the stator 11 disposed in the motor cavity 16 are located below the oil lubrication groove 9, and when the lubricating fluid overflowing the oil lubrication groove 9 falls back down through the front baffle 7 and the back baffle 8, the lubricating fluid can fall on the stator 11 to effectively cool the stator 11.

As shown in fig. 2, oil return ports 26 penetrating downward are formed at both ends of the bottom of the motor housing 3 corresponding to the upper oil lubrication grooves 9, and the oil return ports 26 can lead out the lubricating oil falling back from the motor cavity 16 to the motor cavity 16.

As shown in fig. 2, a buffer chamber 15 is provided at the bottom of the motor housing 3, and the oil return port 26 communicates with the buffer chamber 15. Specifically, as shown in fig. 3, a downwardly extending cavity wall is provided at the lower end of the motor housing 3, the cavity wall is a frame-shaped integral structure, a buffer cavity sealing plate 28 is installed at the bottom end of the cavity wall through a sealing plate bolt 27, the buffer cavity sealing plate 28 seals the cavity wall at the lower end of the motor housing 3, so that a closed buffer cavity 15 is formed at the bottom of the motor housing 3, and a sealing plate sealing ring 29 is provided on a joint surface of the buffer cavity sealing plate 28 and the cavity wall. The oil return opening 26 at the bottom of the motor housing 3 leads down into the buffer chamber 15, so that the lubricating oil which has fallen back in the motor housing 3 can be buffered and accumulated in the buffer chamber 15.

As shown in fig. 2 and fig. 3, an oil outlet 30 which penetrates backwards is formed in the cavity wall below the front end cover 1, and the lubricating oil is buffered and gathered in the buffer cavity 15 and then returns through the oil outlet 30. As shown in fig. 1 to 3, the lubricant flowing out of the motor inner casing is filtered to remove impurities, so that the returned lubricant is free from large-particle impurities or metal particles. The electromagnet 31 is arranged on the bottom surface of the buffer cavity 15, the electromagnet 31 can adsorb and screen out impurities in oil, the electromagnet 31 is provided with a magnet cover plate 32, and the electromagnet 31 fixes the magnet cover plate 32 through a cover plate bolt 23, so that the electromagnet 31 is fixed on the bottom surface of the buffer cavity 15. And be equipped with filter screen 24 on oil-out 30, filter screen 24 can not only further filter the lubricated liquid, can also prevent that when lubricated liquid from taking place the backward flow, impurity returns in motor inner chamber 16. As shown in fig. 2 and fig. 3, in order to effectively cool the lubricating fluid flowing through the bearing and the stator 11 in the buffer cavity 15, the heat dissipation fins 10 are arranged on the bottom surface of the buffer cavity sealing plate 28, so that the buffer cavity sealing plate 28 can dissipate heat quickly to cool the lubricating oil.

The driving motor in the embodiment is specifically subjected to the oil lubrication process when in use as follows: the lubricating oil is pumped to a motor oil inlet 17 on the front end cover 1 of the driving motor through an oil pumping system, goes up to one end of each of the front end cover bearing 5 and the rear end cover bearing 6 through a front end cover oil passage 19, a shell oil passage 18 and a rear end cover oil passage 20, and is gradually accumulated in the oil lubricating groove 9 until the lubricating oil passes through an inner hole of the bearing, and the bearing can be fully lubricated by the oil at the moment. The lubricating oil then flows downward through the bearings and the gaps between the front and rear baffles 7 and 8 or over the top ends of the baffles and enters the motor cavity 16. In the falling process, the lubricating oil falls on two ends of the stator 11 to cool the stator 11. Then, the lubricating oil flows to an oil return port 26 at the bottom end of the motor housing 3 through a gap between the stator 11 and the motor housing 3, and enters the buffer chamber 15 through the oil return port 26. Lubricating oil adsorbs the edulcoration through electro-magnet 31 after the buffer memory gathers in buffer memory chamber 15, finally flows out the motor through oil-out 30 on the buffer memory chamber 15 side, returns to the pump oil system, accomplishes the closed loop circulation of lubricating oil in driving motor, realizes the oil lubrication to driving motor.

In this embodiment, the oil passage where the oil return port 26 is located, the buffer chamber 15, and the oil passage where the oil outlet 30 is located form an oil return passage capable of guiding the lubricating oil out of the drive motor, and the front end cover oil passage 19, the housing oil passage 18, and the rear end cover oil passage 20 form an oil supply passage communicated with the oil lubrication groove 9. The electromagnet 31 constitutes the trash removal device arranged in the buffer chamber 15.

In this embodiment, two oil return openings 26 are provided, and the two oil return openings 26 are all disposed at the bottom of the motor and vertically extend downward. In other embodiments, the number of the oil return ports can be increased or decreased, but at least one oil return port is required. Or the oil return port can be arranged on the side wall of the motor shell, and the oil return channel can also be an external oil return pipeline which is connected with the oil return port on the side wall of the motor shell.

The utility model provides a driving motor's embodiment 2:

the difference from embodiment 1 is that in embodiment 1, the front baffle 7 is an L-shaped plate, the back baffle 8 is a flat plate, and the front baffle 7 can press and fix the outer ring of the front end cover bearing 5. In this embodiment, the rear baffle is an L-shaped plate, and the front baffle is a flat plate, and the rear end cap bearing is pressed and fixed. In other embodiments, the front baffle and the rear baffle can be set to be L-shaped plates to fix the front end cover shaft and the rear end cover shaft in a pressure-equalizing manner, so that the stability of the bearing is ensured. In other different embodiments, the shape and the configuration of the front baffle plate and the rear baffle plate can be changed, such as a structure of a stop block or a stop edge. Or, the arrangement of the front baffle and the rear baffle can be cancelled, the fixing and blocking part is directly integrally processed at the oil lubrication groove where the bearing is located, for example, a clamping groove matched with the size of the bearing is processed in the oil lubrication groove, and the storage of the lubricating oil in the oil lubrication groove is not influenced when the bearing is fixed by the clamping groove.

The utility model provides a driving motor's embodiment 3:

the difference from embodiment 1 is that in embodiment 1, the buffer chamber closing plate 28 is detachably provided at the lower end of the motor housing 3 by bolts. In this embodiment, the bolts are replaced with screws. In other embodiments, the cache cavity closure plate is welded to the underside of the motor housing. In other different embodiments, the buffer cavity closing plate can be integrally formed below the motor shell, so that the buffer cavity is integrally formed below the motor shell.

The utility model provides a driving motor's embodiment 4:

the difference from embodiment 1 is that in embodiment 1, the bottom of the cache cavity sealing plate 28 is provided with the heat dissipation fins 10. In this embodiment, the heat radiating fins are replaced with liquid-cooled plates. In other embodiments, a cooling device may be additionally disposed at the bottom of the heat dissipation fin to cool the lubricating oil. In various other embodiments, heat fins are eliminated.

The utility model provides a driving motor's embodiment 5:

the difference from embodiment 1 is that in embodiment 1, a part of the stator 11 is located below the oil lubrication groove 9, so that the lubricating oil overflowing and falling from the oil lubrication groove 9 falls on the stator 11 and then flows to the oil return passage. In this embodiment, the stator and the oil lubrication groove are located away from each other, so that the lubricating oil in the oil lubrication groove directly falls to the oil return port at the bottom of the motor housing.

The utility model provides a driving motor's embodiment 6:

the difference from embodiment 1 is that in embodiment 1, an impurity removal device is arranged in the buffer cavity 15, and the impurity removal device is an electromagnet 31. In this embodiment, the edulcoration device is the similar filtration layers such as active carbon, filter sand with sewage filtration system. The filter structure layer is arranged below the oil return port. In other embodiments, in order to remove impurities in the lubricating oil, equipment such as impurity removal and filtration can be externally connected to the outside of the buffer cavity to filter and remove impurities in the lubricating oil. In other different embodiments, the impurity removing device is eliminated, and the lubricating oil is automatically precipitated and deposited in the buffer cavity.

The utility model provides a driving motor's embodiment 7:

the difference from embodiment 1 is that in embodiment 1, the oil return passage includes a buffer chamber 15 provided at the bottom of the motor housing 3. In the embodiment, a buffer cavity is omitted, and the lubricating oil directly flows out of the motor through the oil return port and then flows back to the oil pumping system.

The utility model provides a concrete embodiment of vehicle:

a vehicle includes a vehicle body and a power system including a drive motor. The structure and components of the driving motor are the same as those of the driving motors in the above embodiments, and are not described herein again.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made without inventive effort to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A driving motor comprises a motor shell (3) and end covers assembled at two ends of the motor shell (3), wherein a motor inner cavity (16) is formed in the motor shell (3) after the motor shell (3) and the end covers are connected; be equipped with pivot (4) in motor cavity (16), be equipped with stator (11) and rotor (12) around pivot (4) in motor cavity (16), bearing rotation assembly that pivot (4) set up respectively on through the end cover at both ends is in motor cavity (16), its characterized in that: the end covers at two ends are respectively provided with an oil lubrication groove (9) and an oil supply channel communicated with the oil lubrication grooves (9), the oil lubrication grooves (9) are used for storing lubricating oil, and the bearings on the end covers at two ends are positioned in the oil lubrication grooves (9) on the end covers where the bearings are positioned; at least one of the end cover and the motor shell (3) is provided with an oil return channel, an oil return opening (26) of the oil return channel is communicated with the inner cavity (16) of the motor, and the oil return opening (26) is arranged at the bottom of the inner cavity (16) of the motor; and the lubricating oil overflows from the oil lubricating groove, enters an oil return opening (26) of the oil return channel through the inner cavity (16) of the motor and circulates out of the inner cavity (16) of the motor through the oil return channel.

2. The drive motor according to claim 1, characterized in that the oil return channel comprises a buffer chamber (15) provided at the bottom of the motor housing (3), the buffer chamber (15) being adapted to receive lubricant flowing out of the motor interior (16) via an oil return opening (26) of the oil return channel.

3. The drive motor according to claim 2, characterized in that an impurity removal device is arranged in the buffer chamber (15).

4. A drive motor according to claim 3, characterized in that the cleaning means is an electromagnet (31).

5. The drive motor according to any one of claims 1 to 4, characterized in that: an oil outlet (30) of an oil return channel is formed in the end cover, and the oil outlet (30) is formed in the bottom of the end cover; and a filter screen (24) is arranged in the oil outlet (30) and is used for filtering lubricating oil discharged from the motor inner cavity (16).

6. The drive motor according to any one of claims 1 to 4, characterized in that: and a part of the stator (11) is positioned below the oil lubricating groove (9), so that the lubricating oil overflowing and falling from the oil lubricating groove (9) falls on the stator (11) and then flows to the oil return channel.

7. The drive motor according to claim 2, 3 or 4, characterized in that: a buffer cavity sealing plate (28) is arranged at the lower end of the motor shell (3), and the buffer cavity sealing plate (28) and the bottom of the motor shell (3) are connected and sealed to form the buffer cavity (15); and the cache cavity sealing plate (28) is provided with radiating fins (10).

8. The drive motor according to claim 7, characterized in that: the buffer cavity closing plate (28) is detachably arranged below the motor shell (3) through bolts.

9. The drive motor according to any one of claims 1 to 4, characterized in that: defining the extending direction of a motor rotating shaft (4) as a front-back direction, wherein the end covers at two ends of a motor shell (3) are a front end cover (1) and a rear end cover (2), a bearing arranged in the front end cover (1) is a front end cover bearing (5), and a bearing arranged in the rear end cover (2) is a rear end cover bearing (6); a front baffle (7) is arranged on the front end cover (1), and a rear baffle (8) is arranged on the rear end cover (2); the front baffle (7) is positioned behind the front end cover bearing (5), and an oil lubricating groove (9) positioned on the front end cover (1) is enclosed between the front baffle (7) and the front end cover (1); the rear baffle (8) is positioned in front of the rear end cover bearing (6), and an oil lubricating groove (9) positioned on the rear end cover (2) is enclosed between the rear baffle (8) and the rear end cover (2); the front baffle (7) is tightly propped against the outer ring of the front end cover bearing (5), and the front end cover bearing (5) is fixed on the front end cover (1).

10. A vehicle, includes automobile body and driving system, its characterized in that: the power system comprises a drive motor according to any one of claims 1-9.

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