CN217532411U

CN217532411U - Coaxial motor axle assembly with motor cooling structure

Info

Publication number: CN217532411U
Application number: CN202121312251.5U
Authority: CN
Inventors: 陈学福; 何伟
Original assignee: Nanping Jianyang Auto Press Forging Factory
Current assignee: Fujian Tiechima Light Axle Co ltd
Priority date: 2021-06-12
Filing date: 2021-06-12
Publication date: 2022-10-04
Anticipated expiration: 2031-06-12

Abstract

The utility model discloses an establish motor cooling structure's coaxial motor axle assembly, including the axle housing, the surface of axle housing has cup jointed annular seal cover, and it has oil pipe to peg graft to annular seal cover's surface, and the micropump is installed to the up end screw thread of axle housing, and the solenoid valve has been cup jointed to one side that micropump was kept away from to oil pipe, and cooling module has been cup jointed to one side that oil pipe kept away from the solenoid valve, and the inner circle is installed in the inner wall rotation of outer lane, and the inner wall of outer lane and the both sides that are located the inner circle all bond and have seal assembly. The utility model discloses the mode that uses annular sealed cowling to pour into cooling oil into can not cause the wasting of resources, can not cause the corrosion to spare part yet to hot oil can cool off fast, but cyclic utilization within the short time, the cooling effect is better, and can dodge the inner circle of hollow shaft, can avoid the hollow shaft to be leaded to wearing and tearing by the bearing unit friction, can prolong the life of hollow shaft, and seal assembly on the bearing unit is difficult to appear the gap, and sealed effect is better.

Description

Coaxial motor axle assembly with motor cooling structure

Technical Field

The utility model relates to an axle assembly technical field especially relates to an establish coaxial motor axle assembly of motor cooling structure.

Background

The automobile axle is also called as axle, and is connected with the frame or the bearing type automobile body through the suspension, and wheels are arranged at the two ends of the automobile axle. The axle is used for bearing the load of the automobile and maintaining the normal running of the automobile on the road. According to different driving modes, the axle is also divided into a steering axle, a driving axle, a steering driving axle and a supporting axle. Wherein the steering axle and the support axle belong to the driven axle. Most automobiles are front-rear driven, so the front axle is used as a steering axle, the rear axle is used as a driving axle, and the front-drive automobile is used as a steering driving axle, and the rear axle is used as a supporting axle.

Current coaxial motor axle assembly, the cooling method of use is for installing the water tank on the axle housing, then the outside at the motor is with the atomising head watering, resource-wasting relatively, and still easily corroded when the higher part of temperature meets water, this kind of cooling method is when weather is hot, the temperature of water tank also can rise, the cooling effect is not good enough, and the hollow shaft that the motor drove, bearing friction with bearing main shaft on the axle housing produces easily, lead to the hollow shaft wearing and tearing to appear, short service life, and when the vehicle went on uneven road surface, the gap appears easily in the seal assembly on the bearing unit, the leakproofness is not good enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the coaxial motor axle assembly who establishes motor cooling structure that proposes, it uses the mode that the annular sealed cowling pours into the coolant oil into can not cause the wasting of resources, can not cause the corrosion to spare part yet, and hot oil can cool off fast, but circulated use within the short time, the cooling effect is better, and can dodge the inner circle of hollow shaft, can avoid the hollow shaft to lead to wearing and tearing by the bearing unit friction, can prolong the life of hollow shaft, and seal assembly on the bearing unit is difficult to appear the gap, sealed effect is better.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an establish motor cooling structure's coaxial motor axle assembly, includes the axle housing, the surface of axle housing has cup jointed annular seal cover, oil pipe has been pegged graft to annular seal cover's surface, the micropump is installed to the up end screw thread of axle housing, the solenoid valve has been cup jointed to one side that micropump was kept away from to oil pipe, cooling module has been cup jointed to one side that oil pipe kept away from the solenoid valve, the motor is installed to the medial surface screw thread of axle housing, the medial surface of motor rotates installs the hollow shaft, differential shell and first bearing unit are installed to the both sides difference screw thread of axle housing, first bearing unit includes outer lane and scute, the inner wall of outer lane rotates installs the inner circle, the inner wall of outer lane and the both sides that are located the inner circle all bond and have seal assembly.

Preferably, the annular sealing boot, oil pipe and cooling assembly are made of duralumin 4.5%.

Preferably, the inner circle is located the opening part that the axle housing was kept away from to the hollow shaft, seal assembly includes sealing washer and annular support board, the sealed cover of sealing washer is established and is fixed on the bearing inner race, annular support board is worn to establish in the bearing inner race and is in the same place with the sealed rigid coupling of bearing inner race, the radial inner of annular support board is in the same place with the sealed rigid coupling of the radial outer end of elastic sealing ring, elastic sealing ring includes the base ring and along elastic sealing ring's axial distribution's first annular elastic sealing lip and second annular elastic sealing lip, and the annular sealing ditch's opening width diminishes to the low side from the open end of annular sealing ditch gradually, first annular elastic sealing lip and second annular elastic sealing lip all seal the butt on the outer peripheral face of sealing washer.

Preferably, be equipped with on the outer peripheral face of sealing washer along the sealing ring circumference extension seal ring, seal ring wears to establish in the annular seal ditch, when first annular elastic sealing lip and second annular elastic sealing lip wear to lose the sealing effect with the global of sealing ring, first annular elastic sealing lip and second annular elastic sealing lip can be at the axial both ends of seal ring under self elasticity effect sealing butt joint.

Preferably, the inner wall of axle housing and the surface screw thread that is located the hollow shaft install the second bearing unit, the inner wall of differential shell and the surface screw thread that is located the hollow shaft install the third bearing unit, the opening part that the hollow shaft is close to the third bearing unit has cup jointed first conical gear.

Preferably, a bearing frame is installed on the top of the differential shell in a threaded mode, a second bevel gear and a gear frame are installed on the inner side face of the bearing frame in a rotating mode respectively, and a differential is installed on the lower end face of the gear frame in a meshed mode.

Preferably, a left half shaft is installed on one side, away from the axle housing, of the differential in a meshed mode, a right half shaft is inserted into the inner wall of the inner ring, and hub flanges are sleeved on the outer surface of the left half shaft and the outer surface of the right half shaft.

Compared with the prior art, the utility model, its beneficial effect does:

1. be provided with annular sealed cowling, the contrast is at present at the outside cooling method who uses the atomising head watering of axle housing, and the mode of using annular sealed cowling to inject into the coolant oil can not cause the wasting of resources, also can not cause the corrosion to spare part, lets the user save worry more.

2. Be provided with cooling module, cooling module can cool off hot oil fast, but makes within the cooling oil short time cyclic use, and the speed of cooling axle housing is faster, and the cooling effect is better.

3. The inner ring is arranged, so that the shaft head of the hollow shaft can be avoided, the hollow shaft and the first bearing unit are prevented from being abraded due to friction, and the service life of the hollow shaft can be prolonged.

4. Be provided with seal assembly, support among the seal assembly to lean on between circle and the sealing washer elasticity extrusion, when the vehicle went unstably, it is difficult to break away from the sealing washer to lead to seal assembly to appear the gap to be the chevron shape to support to lean on the circle, and sealed effect is better.

Drawings

Fig. 1 is a schematic structural diagram of a coaxial motor axle assembly with a cooling device according to the present invention;

fig. 2 is a schematic view of a cooling component of a coaxial motor axle assembly with a cooling device according to the present invention;

fig. 3 is a schematic diagram of a differential of an axle assembly of a coaxial motor with a cooling device according to the present invention;

fig. 4 is a schematic diagram of an inner ring of an axle assembly of a coaxial motor with a cooling device according to the present invention;

fig. 5 is an enlarged schematic view of the sealing assembly shown in fig. 4 of a coaxial motor axle assembly with a cooling device according to the present invention.

In the figure: 1. an axle housing; 2. an annular seal housing; 3. an oil pipe; 4. a micro-pump; 5. an electromagnetic valve; 6. a cooling assembly; 7. a motor; 8. a hollow shaft; 9. a differential housing; 10. a first bearing unit; 11. an outer ring; 12. a gusset; 13. an inner ring; 14. a seal assembly; 15. mounting holes; 16. a corrugated tube; 17. a shunt tube; 18. a seal ring; 19. an annular support plate; 20. a base ring; 21. a second bearing unit; 22. a third bearing unit; 23. a first bevel gear; 24. bearing bracket (ii) a; 25. a second bevel gear; 26. a gear carrier; 27. a differential mechanism; 28. a left half shaft; 29. a right half shaft; 30. a hub flange; 31. a first annular resilient sealing lip; 32. a second annular elastic sealing lip; 33. an annular sealing groove; 34. and sealing the convex ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a coaxial motor axle assembly with a motor cooling structure, comprising an axle housing 1, wherein an annular sealing cover 2 is sleeved on the outer surface of the axle housing 1, cooling oil (such as propylene glycol) with high heat conduction efficiency is injected into the annular sealing cover 2, the heat inside the axle housing 1 can be quickly absorbed, compared with the current cooling mode of spraying water by using a spray head outside the axle housing 1, the cooling oil is not wasted and does not rust parts, an oil pipe 3 is inserted into the outer surface of the annular sealing cover 2, the oil pipe 3 is a place for circulating the cooling oil, a micro pump 4 is installed on the upper end face of the axle housing 1 in a threaded manner, the micro pump 4 provides power for the circulation of the cooling oil, an electromagnetic valve 5 is sleeved on one side of the oil pipe 3 away from the micro pump 4, the electromagnetic valve 5 controls whether hot oil in the oil pipe 3 flows into a cooling component 6 or into a warm air system, hot oil flowing into the cooling component 6 can be cooled rapidly, a heat source can be provided for a warm air system in winter, the cooling component 6 is sleeved on one side, away from the electromagnetic valve 5, of the oil pipe 3, the cooling component 6 can cool the hot oil rapidly, the cooling oil can be recycled within a short time, the speed of cooling the axle housing 1 is higher, supplement is not needed, the motor 7 is installed on the inner side face of the axle housing 1 in a threaded mode, the motor 7 drives the hollow shaft 8 to rotate, the hollow shaft 8 is installed on the inner side face of the motor 7 in a rotating mode, the hollow shaft 8 drives the first bevel gear 23 to rotate, the differential housing 9 and the first bearing unit 10 are installed on the two sides of the axle housing 1 in a threaded mode respectively, the differential housing 9 protects the differential 27, the first bearing unit 10 comprises an outer ring 11 and an angle plate 12, the angle plate 12 improves the bending moment bearing capacity of the first bearing unit 10, and the inner ring 13 is installed on the inner wall of the outer ring 11 in a rotating mode, a seal assembly 14 is provided between the outer race 11 and the inner race 13.

The utility model discloses in, annular sealed cowling 2, oil pipe 3 is duralumin 4.5%Cu with the material of cooling module 6, duralumin 4.5%Cu's heat conductivity is very good, make annular sealed cowling 2 can be fast with in the heat transfer to the oil in annular sealed cowling 2 that motor 7 produced, cooling module 6 includes mounting hole 15, wave-shaped pipe 16 and shunt tubes 17, mounting hole 15 is convenient for use the screw to install cooling module 6 at vehicle chassis, near axle housing 1 or water tank, wave-shaped pipe 16 is great with the area of contact of air, make the air can take away the heat of hot oil fast, realize quick cooling, shunt tubes 17 makes hot oil get into the confluence again in a plurality of wave-shaped pipes 16, the thermal diffusivity is better, outer lane 11's vertical cross-section is the U-shaped.

The utility model discloses in, inner circle 13 is located hollow shaft 8 and keeps away from the opening part of axle housing 1, can dodge the spindle nose of hollow shaft 8, avoids hollow shaft 8 and first bearing unit 10 to produce the friction and leads to wearing and tearing. Seal assembly 14 includes sealing washer 18 and annular support plate 19, the sealing washer sealed cover is established and is fixed on the bearing inner race, the annular support plate is worn to establish in the bearing inner race and together with the sealed rigid coupling of bearing inner race, the sealed rigid coupling of the radial inner of annular support plate is in the same place with the radial outer end of elastic sealing ring, elastic sealing ring includes base ring 20 and the first annular elastic sealing lip 31 and the second annular elastic sealing lip 32 along elastic sealing ring's axial distribution, enclose into annular seal ditch 33 of first annular elastic sealing lip and first annular elastic sealing lip, the opening width of annular seal ditch diminishes from the open end of annular seal ditch to the low end gradually, first annular elastic sealing lip and second annular elastic sealing lip all seal the butt on the outer peripheral face of sealing washer. The outer peripheral face of the sealing ring is provided with a sealing convex ring 34 extending along the circumferential direction of the sealing ring, the sealing convex ring is arranged in the annular sealing groove in a penetrating mode, when the first annular elastic sealing lip and the second annular elastic sealing lip are abraded to the peripheral face of the sealing ring to lose sealing effect, the first annular elastic sealing lip and the second annular elastic sealing lip can be in sealing butt joint with the two axial ends of the sealing convex ring under the action of self elasticity.

When the vehicle shakes to cause the left half shaft 28 or the right half shaft 29 to slide axially, the elasticity of the elastic sealing ring makes it difficult for gaps to appear in the sealing assembly 14, so that the lubricating oil is ensured not to leak, and external dust and water are difficult to enter the lubricating oil.

The utility model discloses in, the inner wall of axle housing 1 and the surface screw thread that is located hollow shaft 8 install second bearing unit 21, second bearing unit 21 and third bearing unit 22 make the more steady smoothness of the rotation of hollow shaft 8, the inner wall of differential shell 9 and the surface screw thread that is located hollow shaft 8 install third bearing unit 22, hollow shaft 8 has cup jointed first conical gear 23 near the opening part of third bearing unit 22, first conical gear 23 drives second conical gear 25 and rotates.

The utility model discloses in, bearing bracket 24 is installed to the top screw thread of differential shell 9, bearing bracket 24 makes the rotation of second bevel gear 25 and carrier 26 more steady, the medial surface of bearing bracket 24 rotates respectively and installs second bevel gear 25 and carrier 26, second bevel gear 25 can drive the column gear rotation on the carrier 26, the bevel gear that makes on the carrier 26 begins to rotate, differential mechanism 27 is installed in the lower terminal surface meshing of carrier 26, differential mechanism 27 can make the condition of skidding can not appear in the tire in the bend outside when the vehicle turns.

The utility model discloses in, differential mechanism 27 keeps away from one side meshing of axle housing 1 and installs left semi-axis 28, and the inner wall of inner circle 13 is pegged graft and is had right semi-axis 29, and left semi-axis 28 can drive the tire with the rotation of right semi-axis 29 and make synchronous rotation, and wheel hub flange 30 has all been cup jointed with the surface of right semi-axis 29 to the surface of left semi-axis 28, and wheel hub flange 30 is used for installing the tire.

The utility model discloses well micropump 4, solenoid valve 5 and motor 7 are the known technology that extensively applies to daily life that has disclosed, and the model of micropump 4 is MP-6R, and the model of solenoid valve 5 is 2W08-65, and the model of motor 7 is 4GN-3K.

When the vehicle is in use, the motor 7 is started, the hollow shaft 8 starts to rotate, the first bevel gear 23 drives the second bevel gear 25 to rotate, the bevel gear on the gear rack 26 drives the differential mechanism 27 to rotate, the differential mechanism 27 enables the left half shaft 28 and the right half shaft 29 to synchronously rotate, when the vehicle turns, due to the existence of the differential mechanism 27, the tires on the inner side and the outer side of the curve generate a rotation speed difference, the condition that the tires on the outer side of the curve slip is prevented, a large amount of heat is generated when the motor 7 runs and is accumulated in the axle housing 1, the heat can be quickly transferred to the cooling oil in the annular sealing cover 2, the micro pump 4 is started, the hot oil enters the cooling assembly 6 through the oil pipe 3 and enters each wave-shaped pipe 16 through the flow dividing pipe 17, and due to the large contact area between the wave-shaped pipes 16 and air, the air can quickly take the heat of the hot oil away, make within the coolant oil short time can recycle, the speed of cooling axle housing 1 is faster, and need not the replenishment, and the contrast is at the present cooling method that axle housing 1 outside sprinkles with the atomising head, the mode of using annular sealed cowling 2 to pour into the coolant oil into can not cause the wasting of resources, can not cause the corrosion to spare part yet, let the user save worry more, when the vehicle is on the road at ordinary times, because there is the elasticity extrusion between leaning on circle 20 and the sealing washer 18 for leaning on in the sealing assembly 14, it is difficult to break away from sealing washer 18 and leads to making the sealing assembly 14 the gap to appear to be leaned on circle 20 to be lambdoid, sealed effect is better, because inner circle 13 is located the opening part that axle housing 1 was kept away from to the hollow shaft 8, can dodge the spindle nose of hollow shaft 8, avoid hollow shaft 8 and first bearing unit 10 to produce the friction and lead to wearing and tearing, can prolong the life of hollow shaft 8.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an establish coaxial motor axle assembly of motor cooling structure, includes axle housing (1), its characterized in that, annular sealed cowling (2) have been cup jointed to the surface of axle housing (1), the surface of annular sealed cowling (2) is pegged graft and has oil pipe (3), micropump (4) are installed to the up end screw thread of axle housing (1), solenoid valve (5) have been cup jointed to one side that micropump (4) were kept away from in oil pipe (3), cooling module (6) have been cup jointed to one side that solenoid valve (5) were kept away from in oil pipe (3), motor (7) are installed to the medial surface screw thread of axle housing (1), hollow shaft (8) are installed in the medial surface rotation of motor (7), differential shell (9) and first bearing unit (10) are installed to the both sides difference screw thread of axle housing (1), first bearing unit (10) include outer lane (11) and scute (12), inner circle (13) are installed in the inner wall rotation of outer lane (11), inner circle (13) have seal assembly (14) in inner wall and the both sides that are located inner circle (13) all bond.

2. The coaxial motor axle assembly of claim 1, wherein the inner ring (13) is located the opening of axle housing (1) is kept away from in hollow shaft (8), seal assembly (14) includes sealing washer and annular support plate, the sealing washer sealed cowling is established and is fixed on the bearing inner race, the annular support plate is worn to establish in the bearing inner race and is sealed the rigid coupling together with the bearing inner race, the radial inner end of annular support plate is sealed the rigid coupling together with the radial outer end of elastic sealing ring, elastic sealing ring includes the base ring and along the first annular elastic sealing lip and the second annular elastic sealing lip of elastic sealing ring's axial distribution, the annular sealing ditch of enclosing of first annular elastic sealing lip and first annular elastic sealing lip, the opening width of annular sealing ditch diminishes to the low end from the open end of annular sealing ditch gradually, first annular elastic sealing lip and second annular elastic sealing lip all seal the butt on the sealing washer of outer peripheral face.

3. The axle assembly of the coaxial motor with the motor cooling structure as recited in claim 2, wherein a sealing convex ring extending along a circumferential direction of the sealing ring is disposed on an outer circumferential surface of the sealing ring, the sealing convex ring is disposed in the annular sealing groove, and when the first annular elastic sealing lip and the second annular elastic sealing lip are worn to lose a sealing effect with a circumferential surface of the sealing ring, the first annular elastic sealing lip and the second annular elastic sealing lip can be in sealing butt joint with both axial ends of the sealing convex ring under a self elastic force.

4. The coaxial motor axle assembly with the motor cooling structure is characterized in that a second bearing unit (21) is installed on the inner wall of the axle housing (1) and located on the outer surface of the hollow shaft (8) in a threaded mode, a third bearing unit (22) is installed on the inner wall of the differential housing (9) and located on the outer surface of the hollow shaft (8) in a threaded mode, and a first bevel gear (23) is sleeved at the position, close to the opening of the third bearing unit (22), of the hollow shaft (8).

5. The coaxial motor axle assembly with the motor cooling structure is characterized in that a bearing bracket (24) is installed at the top of the differential shell (9) in a threaded mode, a second bevel gear (25) and a gear carrier (26) are installed on the inner side face of the bearing bracket (24) in a rotating mode respectively, and a differential (27) is installed on the lower end face of the gear carrier (26) in a meshed mode.

6. The coaxial motor axle assembly with the motor cooling structure is characterized in that a left half shaft (28) is mounted on one side, away from the axle housing (1), of the differential (27) in a meshed mode, a right half shaft (29) is connected to the inner wall of the inner ring (13) in an inserted mode, and a hub flange (30) is connected to the outer surface of the left half shaft (28) and the outer surface of the right half shaft (29) in a sleeved mode.