Electric drive axle housing with flow guide and heat dissipation structure

Abstract

The utility model provides an electric drive axle housing with a diversion heat dissipation structure, which comprises a main speed reducer housing with the front side and the rear side opened, the rear side of the main speed reducer housing is detachably connected with an end cover, and the inner wall of the main speed reducer housing is recessed outwards to form a plurality of diversion heat dissipation grooves. Each flow guide heat dissipation groove forms a heat dissipation protrusion on the outer wall of the main speed reducer shell, the bottom in the main speed reducer shell is downwards provided with an oil bottom groove with an opening in the lower end, the lower end of the main speed reducer shell is detachably connected with a sealing cover matched with the oil bottom groove, and the sealing cover is provided with a magnet piece in the oil bottom groove. Half shaft penetrating holes are formed in the left side and the right side of each main speed reducer shell, and half shaft sleeves matched with the corresponding half shaft penetrating holes are detachably connected to the left side and the right side of each main speed reducer shell. The heat dissipation structure is optimized, the heat dissipation effect is enhanced, meanwhile, the scrap iron collecting device is introduced, extra abrasion caused by scrap iron is effectively reduced, and therefore the overall performance of the electric drive axle is improved, and the service life of the electric drive axle is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, and relates to an electric drive axle housing with a flow guide heat dissipation structure. BACKGROUND

[0002] In the drive system of traditional vehicles, the drive axle serves as a key component for power transmission, and undertakes the important task of transmitting the driving force generated by the engine or motor to the wheels. The traditional design of the drive axle housing mainly focuses on mechanical strength, rigidity, and effective protection of internal components. However, with the development and popularization of electric vehicle technology, the electric drive axle gradually attracts attention as an efficient power transmission solution. The electric drive axle not only requires the basic functions of the traditional drive axle, but also needs to adapt to the unique power output characteristics of the electric motor.

[0003] Most of the drive axle housings on the current market lack effective heat dissipation structures in the design. Especially during the operation of the main reducer, due to the need to withstand large torque and speed, a large amount of heat will be generated. In this case, if there is no appropriate heat dissipation measure, the temperature of the main reducer will rise, which will affect its working efficiency and service life. Especially in the case of long-time operation, this problem is more prominent.

[0004] In addition, the drive axle housing in the prior art lacks an effective mechanism for handling iron filings generated by the wear of the main reducer. When the main reducer operates, due to the friction between metals, small iron filings will inevitably be generated. If these iron filings cannot be removed in time, they will accumulate in the main reducer housing, further aggravating the wear of the components, leading to a decline in device performance and even the occurrence of faults. SUMMARY

[0005] The utility model aims at providing a kind of electric drive axle housing with flow guide heat dissipation structure, by optimizing heat dissipation structure, enhance the heat dissipation effect, simultaneously introduce iron filings collection device, effectively reduce the additional wear caused by iron filings, to improve the overall performance and service life of electric drive axle.

[0006] The utility model provides a kind of electric drive axle housing with flow guide heat dissipation structure, including the main reducer shell that front and rear two sides are opened, the rear side of the main reducer shell is detachably connected with end cover, the inner wall of the main reducer shell is outwardly recessed to form multiple flow guide heat dissipation grooves, every flow guide heat dissipation groove is formed on the outer wall of the main reducer shell Radiating protrusion, the inner wall of the end cover is outwardly recessed to form multiple radial flow guide grooves arranged radially from its center, every radial flow guide groove is formed on the outer wall of the end cover Radiating protrusion, the bottom in the main reducer shell is provided with the oil sump of lower end opening downwards, the lower end of the main reducer shell is detachably connected with the sealing cover matched with the oil sump, the sealing cover is provided with magnet sheet in the oil sump;

[0007] The left and right sides of the main reducer shell are provided with half shaft perforations, and the left and right sides of each main reducer shell are detachably connected with half shaft sleeves matched with the corresponding half shaft perforations.

[0008] By adopting the above technical scheme, when the main reducer in the main reducer shell works, the transmission mechanism inside drives the lubricating oil to be brought up from the oil sump and thrown to the inner wall of the main reducer shell, and enters the flow guide heat dissipation groove and the radial flow guide groove, so as to transfer heat to the radiating protrusion and the radiating protrusion for outward heat dissipation, thereby increasing the heat dissipation capacity of the main reducer.

[0009] The utility model further sets that the outer side of every radiating protrusion is provided with radiating strip.

[0010] The utility model further sets that the outer side of every radiating protrusion is provided with radiating strip.

[0011] The utility model further sets that every flow guide heat dissipation groove is perpendicular to the end face of the main reducer shell.

[0012] The utility model further sets that the edge of the front side of the main reducer shell is provided with a plurality of front mounting holes.

[0013] The utility model further sets that the edge of the rear side of the main reducer shell is provided with a plurality of rear connecting bolts, and the edge of the end cover is provided with a plurality of rear connecting holes matched with the rear connecting bolts.

[0014] The utility model further sets up, the left and right sides of main reducer casing are all outwardly provided with a plurality of side edge connecting bolts corresponding half shaft hole, the edge of each half shaft sleeve one end is outwardly provided with installation skirt, each installation skirt is provided with a plurality of side edge mounting hole corresponding with the side edge connecting bolt.

[0015] The utility model further sets up, the lower extreme of main reducer casing is provided with a plurality of screw thread connection hole in the edge of oil pan, the edge of sealing cover is provided with a plurality of bottom connecting hole corresponding with the screw thread connection hole, and the sealing cover is connected with main reducer casing through bottom bolt passing through bottom connecting hole and screw thread connection hole.

[0016] The utility model further sets up, the sealing cover is provided with sealing rubber washer cooperating with the edge of oil pan on the outside of magnet sheet.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] First, the main reducer casing of the utility model is provided with flow guide heat dissipation groove and radiation flow guide groove, can accommodate the lubricating oil thrown out by main reducer, and the heat of main reducer is transmitted to the heat dissipation protrusion and radiation protrusion through lubricating oil, and finally radiates outward, effectively improves the heat dissipation capacity of drive axle housing, and effectively radiates main reducer.

[0019] Second, the utility model is provided with oil pan in the bottom of main reducer casing, and magnet sheet is arranged in the bottom of oil pan, and the iron filings transmitted through lubricating oil can be effectively adsorbed by magnet sheet, and the iron filings are gathered in oil pan, preventing the iron filings from entering main reducer along with lubricating oil and aggravating abrasion.

[0020] Third, the utility model adopts spliced detachable structure, and compared with the drive axle housing integrally formed, the manufacturing cost is lower, and the utility model is more convenient to maintain and replace, and compared with the drive axle housing formed by welding, the strength is higher due to no welding influence. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the utility model;

[0022] Figure 2 It is the utility model's explosion map;

[0023] Figure 3 It is used to show the connection of main reducer casing and sealing cover;

[0024] Figure 4 It is used to show the magnet sheet and sealing rubber washer on sealing cover.

[0025] The components include: 1. Main reducer housing; 2. Front mounting hole; 3. End cover; 4. Rear connecting bolt; 5. Rear connecting hole; 6. Flow guide heat dissipation groove; 7. Heat dissipation protrusion; 8. Heat dissipation strip; 9. Radial flow guide groove; 10. Radial protrusion; 11. Radial heat dissipation fins; 12. Oil pan; 13. Sealing cover; 14. Threaded connection hole; 15. Bottom connection hole; 16. Bottom bolt; 17. Magnet piece; 18. Sealing rubber gasket; 19. Half shaft through hole; 20. Half shaft sleeve; 21. Side connecting bolt; 22. Mounting skirt; 23. Side mounting hole; 24. Stiffening strip. Detailed Implementation

[0026] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of an electric drive bridge housing with a heat dissipation and heat-dissipating structure proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0027] Example, refer to Figures 1-4 An electric drive axle housing with a heat dissipation structure includes a main reducer housing 1 with openings on both the front and rear sides. The front edge of the main reducer housing 1 has multiple front mounting holes 2 for mounting motor components. The rear side of the main reducer housing 1 is detachably connected to an end cover 3. The rear edge of the main reducer housing 1 has multiple rear connecting bolts 4. The edge of the end cover 3 has multiple rear connecting holes 5 that are connected to the rear connecting bolts 4 one by one.

[0028] The inner wall of the main reducer housing 1 is recessed outward to form multiple cooling channels 6 perpendicular to the opening of the main reducer housing 1. Each cooling channel 6 has a heat dissipation protrusion 7 on the outer wall of the main reducer housing 1. A heat dissipation strip 8 is provided on the outer side of each heat dissipation protrusion 7. The inner wall of the end cover 3 is recessed outward to form multiple radial cooling channels 9 arranged radially from its center outward. Each radial cooling channel 9 has a radial protrusion 10 on the outer wall of the end cover 3. A radial heat dissipation fin 11 is provided on the outer side of each radial protrusion 10. The internal lubricating oil is contained through the cooling channels 6 and the radial cooling channels 9, and heat is dissipated outward through the lubricating oil.

[0029] The main reducer housing 1 has an oil pan 12 with an open bottom at the bottom. A sealing cover 13 that mates with the oil pan 12 is detachably connected to the lower end of the main reducer housing 1. Four threaded connection holes 14 are provided at the edge of the oil pan 12 at the lower end of the main reducer housing 1. Four bottom connection holes 15 are provided at the edge of the sealing cover 13, which correspond one-to-one with the threaded connection holes 14. The sealing cover 13 is connected to the main reducer housing 1 by bottom bolts 16 that pass through the bottom connection holes 15 and the threaded connection holes 14. A magnet 17 is provided in the oil pan 12 of the sealing cover 13 to attract iron filings that enter the oil pan 12. A sealing rubber gasket 18 that mates with the edge of the oil pan 12 is provided on the outside of the magnet 17 of the sealing cover 13.

[0030] A half-shaft through hole 19 is provided on both the left and right sides of the main reducer housing 1. A half-shaft sleeve 20 that mates with the corresponding half-shaft through hole 19 can be detachably connected to both the left and right sides of each main reducer housing 1. Multiple side connecting bolts 21 are provided outward from the corresponding half-shaft through hole 19 on both the left and right sides of the main reducer housing 1. A mounting skirt 22 is provided outward from one edge of each half-shaft sleeve 20. Multiple side mounting holes 23 that correspond one-to-one with the side connecting bolts 21 are provided on the side of each half-shaft sleeve 20. Multiple stiffening strips 24 are provided on the outer side of each half-shaft sleeve 20 along its length to increase the strength of the half-shaft sleeve 20.

[0031] Working principle: When the main reducer inside the main reducer housing 1 is working, its internal transmission mechanism drives the lubricating oil from the oil pan 12 and throws it onto the inner wall of the main reducer housing 1. The oil then enters the heat dissipation channel 6 and the radial heat dissipation channel 9, transferring heat to the raised heat dissipation protrusions 7 and radial protrusions 10 for outward heat dissipation, increasing the heat dissipation capacity of the main reducer. In addition, the iron filings generated by the wear of the main reducer are mixed into the lubricating oil. After flowing down into the oil pan 12 with the lubricating oil, they are attracted and collected by the magnetic piece 17 on the sealing cover 13 at the bottom of the oil pan 12, preventing them from entering the main reducer with the lubricating oil and aggravating wear. Regularly opening the sealing cover 13 to clean the iron filings can effectively prevent the main reducer from being worn by iron filings.

[0032] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0033] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An electric drive axle housing with a heat dissipation and heat guiding structure, comprising a main reducer housing (1) with openings on both the front and rear sides, characterized in that, The rear side of the main reducer housing (1) is detachably connected to an end cap (3). The inner wall of the main reducer housing (1) is recessed outward to form multiple heat dissipation grooves (6). Each heat dissipation groove (6) forms a heat dissipation protrusion (7) on the outer wall of the main reducer housing (1). The inner wall of the end cap (3) is recessed outward to form multiple radial heat dissipation grooves (9) arranged radially from its center outward. Each radial heat dissipation groove (9) forms a radial protrusion (10) on the outer wall of the end cap (3). The bottom of the main reducer housing (1) is provided with an oil pan (12) with an opening at the bottom. The lower end of the main reducer housing (1) is detachably connected to a sealing cap (13) that cooperates with the oil pan (12). The sealing cap (13) is provided with a magnet (17) in the oil pan (12). The main reducer housing (1) has half shaft through holes (19) on both the left and right sides. Each main reducer housing (1) can be detachably connected to a half shaft sleeve (20) that matches the corresponding half shaft through hole (19). Each half shaft sleeve (20) has multiple stiffening strips (24) arranged along its length direction on its outer side.

2. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, Each heat dissipation protrusion (7) has a heat dissipation strip (8) on its outer side.

3. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, Each radial protrusion (10) has radial heat dissipation fins (11) on its outer side.

4. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, Each heat dissipation groove (6) is perpendicular to the end face of the main reducer housing (1).

5. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, The front edge of the main reducer housing (1) is provided with multiple front mounting holes (2).

6. The electric drive bridge housing with a heat dissipation structure according to claim 1, characterized in that, The rear edge of the main reducer housing (1) is provided with multiple rear connecting bolts (4), and the edge of the end cover (3) is provided with multiple rear connecting holes (5) that are connected to the rear connecting bolts (4) one by one.

7. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, On the left and right sides of the main reducer housing (1), there are multiple side connecting bolts (21) extending outward from the corresponding half shaft through holes (19). Each half shaft sleeve (20) has an edge with an outward mounting skirt (22) at one end. Each mounting skirt (22) has multiple side mounting holes (23) corresponding to the side connecting bolts (21).

8. The electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 1, characterized in that, The lower end of the main reducer housing (1) is provided with a plurality of threaded connection holes (14) at the edge of the oil pan (12), and the edge of the sealing cover (13) is provided with a plurality of bottom connection holes (15) corresponding one-to-one with the threaded connection holes (14). The sealing cover (13) is connected to the main reducer housing (1) by bottom bolts (16) passing through the bottom connection holes (15) and the threaded connection holes (14).

9. An electric drive bridge housing with a heat dissipation and heat-conducting structure according to claim 8, characterized in that, The sealing cap (13) has a sealing rubber gasket (18) on the outside of the magnet piece (17) that matches the edge of the oil sump (12).

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