Integrated drive axle assembly

Abstract

The utility model discloses an integrated drive axle assembly which comprises an axle housing, a speed reducer, a differential mechanism and half shafts are arranged in the axle housing, the ends of the two half shafts are connected with a first brake and a second brake respectively, oil sealing sleeves are arranged between the first brake and the axle housing and between the second brake and the axle housing, oil seals are installed in the oil sealing sleeves, and an input shaft sleeve is arranged on the top face of the axle housing. A cooling liquid conveying box and a cooling liquid standby box are arranged on the portions, located on the two sides of the input shaft sleeve, of the top face of the axle housing, cooling liquid jackets are arranged on the front side face and the rear side face of the axle housing respectively, and the cooling liquid conveying box, the cooling liquid standby box, the cooling liquid jackets, the input shaft sleeve and the oil sealing sleeve are connected through cooling liquid conveying pipe fittings. The cooling device is used for cooling an axle housing, an oil seal and an input shaft sleeve. The axle housing, the oil seal and the input shaft sleeve can be cooled, the aging speed of the oil seal is slowed down, the service life of the oil seal and the input shaft sleeve is prolonged, and the service life of lubricating oil can be prolonged.

Description

Technical Field

[0001] The utility model relates to an integrated drive axle assembly. Background Art

[0002] The drive axle is an important mechanism at the end of the vehicle transmission system, responsible for changing the speed and torque from the transmission and transmitting them to the drive wheels. Then, various fault phenomena may occur in the drive axle, which not only affect the normal driving of the vehicle, but also pose a threat to the safety performance of the vehicle.

[0003] After the drive axle is used for a period of time, it is prone to oil leakage. The main reason is that the rubber sealing ring is subjected to alternating cold and warm temperature changes for a long time, resulting in the loss of a large amount of plasticizer and softener in the sealing ring, thus causing problems such as corrosion, aging and hardening. This situation is initially oil seepage, and slowly starts to drip oil. Over time, the sealing ring will break, affecting the normal use of the drive axle. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a technical solution for an integrated drive axle assembly aiming at the deficiencies of the prior art, which can not only cool the axle housing, oil seal and input shaft sleeve, delay the aging speed of the oil seal, extend the service life of the oil seal and input shaft sleeve, but also extend the service life of the lubricating oil, and at the same time can realize the recycling of the coolant.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] An integrated drive axle assembly, comprising,

[0007] An axle housing, in which a speed reducer, a differential and half shafts are provided. The ends of the two half shafts are respectively connected with a first brake and a second brake. An oil seal sleeve is provided between the first brake and the second brake and the axle housing. An oil seal is installed in the oil seal sleeve. An input shaft sleeve is provided on the top surface of the axle housing;

[0008] It is characterized in that:

[0009] Coolant delivery tanks and coolant reserve tanks are provided on both sides of the input shaft sleeve on the top surface of the axle housing. Coolant jackets are respectively provided on the front and rear sides of the axle housing. The coolant delivery tanks, coolant reserve tanks, coolant jackets, input shaft sleeve and oil seal sleeve are connected through coolant delivery pipe fittings for cooling and temperature reduction of the axle housing, oil seal and input shaft sleeve; Through the design of the above structure, not only can the axle housing, oil seal and input shaft sleeve be cooled, the aging speed of the oil seal be delayed, the service life of the oil seal and input shaft sleeve be extended, but also the service life of the lubricating oil can be extended, and at the same time the recycling of the coolant can be realized.

[0010] Furthermore, the coolant delivery pipe fittings include a coolant output pipe, a liquid distribution pipe, a diversion pipe, a return pipe, and a make-up water pipe. The coolant delivery tank is connected to the liquid distribution pipe through the coolant output pipe. The liquid distribution pipe communicates with the input shaft sleeve and the oil seal sleeve located on one side of the first brake. The input shaft sleeve communicates with the oil seal sleeve located on one side of the second brake through the diversion pipe. The oil seal sleeve communicates with the coolant jacket through the return pipe. The coolant reserve tank communicates with the coolant delivery tank through the make-up water pipe. The coolant delivery tank can distribute and convey the coolant through the coolant output pipe to both sides via the liquid distribution pipe. The coolant in the oil seal sleeve near the first brake flows back to the coolant jackets on both sides through the return pipe. The coolant in the input shaft sleeve is conveyed to the oil seal sleeve near the second brake through the diversion pipe and then flows back to the coolant jackets on both sides through the return pipe. The cooling water in the coolant jackets can flow back to the coolant delivery tank through the return plate, realizing the recycling of the coolant. The coolant in the coolant reserve tank can be conveyed to the coolant delivery tank through the make-up water pipe to ensure the recycling of the coolant.

[0011] Furthermore, an infusion pump, a first liquid level sensor, and a second liquid level sensor are provided in the coolant delivery tank. The infusion pump is connected to the coolant output pipe. The first liquid level sensor is located below the second liquid level sensor. The infusion pump is used to output the coolant in the coolant delivery tank. The first liquid level sensor and the second liquid level sensor can detect the amount of coolant in the coolant delivery tank to ensure continuous conveyance of the coolant.

[0012] Furthermore, the coolant jacket includes a jacket body, a folded edge formed by folding along the edge of the jacket body, and heat dissipation fins connected to the folded edge and the jacket body. The heat dissipation fins are evenly distributed on the inner side surface of the jacket body. A number of diversion holes are provided on the heat dissipation fins. Through the design of the above structure, it is convenient for the stable connection between the jacket body and the axle housing. At the same time, the heat dissipation fins can be close to the axle housing to improve the heat dissipation efficiency of the axle housing and extend the service life of the lubricating oil. The diversion holes facilitate the circulation of the coolant.

[0013] Furthermore, through holes are provided on the folded edges on both sides. The through holes communicate with the return pipe, facilitating the coolant in the oil seal sleeve to flow back to the coolant jacket through the return pipe.

[0014] Furthermore, the coolant delivery tank is connected to the coolant jacket through a return plate, which is used to introduce the cooling water in the coolant jacket into the coolant delivery tank to realize the recycling of the coolant.

[0015] Furthermore, the return plate is provided with a clamping groove, a return groove, and mounting holes. The clamping groove matches the coolant jacket. Return holes are provided on the folded edge. The coolant delivery tank is provided with a through groove. The return holes communicate with the through groove through the return groove. The return plate is fixedly connected to the axle housing by screws passing through the mounting holes. The return plate can not only fixedly connect the coolant jacket, but also facilitate the flow of the coolant through the return groove to ensure the cyclic flow of the coolant.

[0016] Furthermore, the coolant jacket is connected to the axle housing through a reinforcement mechanism, achieving a fixed connection between the coolant jacket and the axle housing.

[0017] Furthermore, the reinforcement mechanism includes a U-shaped frame, clamping blocks, and fastening rods. The clamping blocks are arranged at both ends of the U-shaped frame, and the two clamping blocks are connected by the fastening rods. Through the design of the U-shaped frame, clamping blocks, and fastening rods, the installation stability and reliability of the coolant jacket can be improved.

[0018] Due to the adoption of the above technical solutions, the present utility model has the following beneficial effects:

[0019] The present utility model can not only cool the axle housing, oil seal, and input shaft sleeve, delay the aging speed of the oil seal, extend the service life of the oil seal and input shaft sleeve, but also extend the service life of the lubricating oil, and at the same time can realize the recycling of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further describes the present utility model in conjunction with the drawings:

[0021] Figure 1 is a schematic structural diagram of the integral drive axle assembly of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the coolant jacket in the present utility model;

[0023] Figure 3 is a schematic structural diagram of the reflux plate in the present utility model;

[0024] Figure 4 is a schematic internal structural diagram of the coolant delivery tank in the present utility model;

[0025] Figure 5 is a schematic structural diagram of the reinforcement mechanism in the present utility model.

[0026] In the figure: 1 - axle housing; 2 - first brake; 3 - second brake; 4 - input shaft sleeve; 5 - coolant delivery tank; 6 - coolant reserve tank; 7 - coolant jacket; 8 - coolant output pipe; 9 - distribution pipe; 10 - diversion pipe; 11 - return pipe; 12 - reflux plate; 13 - reinforcement mechanism; 14 - jacket body; 15 - flange; 16 - through hole; 17 - return hole; 18 - heat sink; 19 - diversion hole; 20 - card slot; 21 - mounting hole; 22 - return groove; 23 - through groove; 24 - first liquid level sensor; 25 - second liquid level sensor; 26 - infusion pump; 27 - U-shaped frame; 28 - clamping block; 29 - fastening rod; 30 - water supply pipe; 31 - oil seal sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present utility model.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] As Figures 1 to 5 shown, the present utility model is an integrated drive axle assembly, including a bridge housing 1. A speed reducer, a differential and half shafts are provided in the bridge housing 1. The ends of the two half shafts are respectively connected with a first brake 2 and a second brake 3. An oil seal sleeve 31 is provided between the first brake 2 and the second brake 3 and the bridge housing 1. An oil seal is installed in the oil seal sleeve 31. An input shaft sleeve 4 is provided on the top surface of the bridge housing 1.

[0031] On the top surface of the bridge housing 1, a coolant delivery tank 5 and a coolant reserve tank 6 are provided on both sides of the input shaft sleeve 4.

[0032] A liquid delivery pump 26, a first liquid level sensor 24 and a second liquid level sensor 25 are provided in the coolant delivery tank 5. The liquid delivery pump 26 is connected to a coolant output pipe 8. The first liquid level sensor 24 is located below the second liquid level sensor 25. The liquid delivery pump 26 is used to output the coolant in the coolant delivery tank 5. The first liquid level sensor 24 and the second liquid level sensor 25 can detect the amount of coolant in the coolant delivery tank 5 to ensure continuous delivery of the coolant.

[0033] A pump for delivering coolant and a liquid level sensor for monitoring the height of the coolant level may be provided in the coolant reserve tank 6.

[0034] Cooling liquid jackets 7 are respectively arranged on the front and rear sides of the axle housing 1. The cooling liquid jacket 7 includes a jacket body 14, a folded edge 15 formed by folding along the edge of the jacket body 14, and heat dissipation fins 18 connected to the folded edge 15 and the jacket body 14. The heat dissipation fins 18 are evenly distributed along the inner side surface of the jacket body 14. A number of diversion holes 19 are provided on the heat dissipation fins 18. Through the design of the above structure, it is convenient for the stable connection between the jacket body 14 and the axle housing 1. At the same time, the heat dissipation fins 18 can be close to the axle housing 1 to improve the heat dissipation efficiency of the axle housing 1, extend the service life of the lubricating oil, and the diversion holes 19 are convenient for the circulation of the cooling liquid.

[0035] Through holes 16 are provided on the folded edges 15 on both sides. The through holes 16 are communicated with the return pipe 11, which is convenient for the cooling liquid in the oil seal sleeve 31 to flow back to the cooling liquid jacket through the return pipe 11.

[0036] The cooling liquid delivery tank 5 is connected to the cooling liquid jacket 7 through a return plate 12, which is used to introduce the cooling water in the cooling liquid jacket 7 into the cooling liquid delivery tank 5 to realize the recycling of the cooling liquid.

[0037] The return plate 12 is provided with a card slot 20, a return groove 22 and a mounting hole 21. The card slot 20 is matched with the cooling liquid jacket 7. A return hole 17 is provided on the folded edge 15. The cooling liquid delivery tank 5 is provided with a through groove 23. The return hole 17 is communicated with the through groove 23 through the return groove 22. By passing a screw through the mounting hole 21, the fixed connection between the return plate 12 and the axle housing 1 is realized. The return plate 12 can not only fixedly connect the cooling liquid jacket, but also is beneficial to the flow of the cooling liquid through the return groove 22 to ensure that the cooling liquid can circulate.

[0038] The cooling liquid jacket 7 is connected to the axle housing 1 through a reinforcement mechanism 13 to realize the fixed connection between the cooling liquid jacket 7 and the axle housing 1.

[0039] The reinforcement mechanism 13 includes a U-shaped frame 27, clamping blocks 28 and fastening rods 29. The clamping blocks 28 are arranged at both ends of the U-shaped frame 27. The two clamping blocks 28 are connected by the fastening rods 29. Through the design of the U-shaped frame 27, clamping blocks 28 and fastening rods 29, the stability and reliability of the installation of the cooling liquid jacket can be improved.

[0040] The cooling liquid delivery tank 5, the cooling liquid reserve tank 6, the cooling liquid jacket 7, the input shaft sleeve 4 and the oil seal sleeve 31 are connected through cooling liquid delivery pipe fittings, which are used to cool and lower the temperature of the axle housing 1, the oil seal and the input shaft sleeve 4; through the design of the above structure, not only can the temperature of the axle housing 1, the oil seal and the input shaft sleeve 4 be lowered, the aging speed of the oil seal can be delayed, the service life of the oil seal and the input shaft sleeve 4 can be extended, but also the service life of the lubricating oil can be extended, and at the same time, the recycling of the cooling liquid can be realized.

[0041] The coolant delivery pipe fittings include a coolant output pipe 8, a liquid distribution pipe 9, a diversion pipe 10, a return pipe 11, and a make-up water pipe 30. The coolant delivery tank 5 is connected to the liquid distribution pipe 9 through the coolant output pipe 8. The liquid distribution pipe 9 communicates with the input shaft sleeve 4 and the oil seal sleeve 31 on one side of the first brake 2. The input shaft sleeve 4 communicates with the oil seal sleeve 31 on one side of the second brake 3 through the diversion pipe 10. The oil seal sleeve 31 communicates with the coolant jacket 7 through the return pipe 11. The coolant reserve tank 6 communicates with the coolant delivery tank 5 through the make-up water pipe 30. Through the coolant delivery tank 5, the coolant can be divided and delivered to both sides by the liquid distribution pipe 9 through the coolant output pipe 8. The coolant in the oil seal sleeve 31 near the first brake 2 flows back to the coolant jackets on both sides through the return pipe 11. The coolant in the input shaft sleeve 4 is delivered to the oil seal sleeve 31 near the second brake 3 through the diversion pipe 10, and then flows back to the coolant jackets on both sides through the return pipe 11. The cooling water in the coolant jackets can flow back to the coolant delivery tank 5 through the return plate 12 to realize the recycling of the coolant. The coolant in the coolant reserve tank 6 can be delivered to the coolant delivery tank 5 through the make-up water pipe 30 to ensure the recycling of the coolant.

[0042] When the present utility model is actually used, first, the required coolant is respectively filled into the coolant delivery tank and the coolant reserve tank. Then, the liquid delivery pump in the coolant delivery tank is started, and the coolant in the coolant delivery tank is divided and delivered to both sides by the liquid distribution pipe 9 through the coolant output pipe 8. The coolant in the oil seal sleeve 31 near the first brake 2 flows back to the coolant jackets on both sides through the return pipe 11. The coolant in the input shaft sleeve 4 is delivered to the oil seal sleeve 31 near the second brake 3 through the diversion pipe 10, and then flows back to the coolant jackets on both sides through the return pipe 11. The cooling water in the coolant jackets can flow back to the coolant delivery tank 5 through the return plate 12 to realize the recycling of the coolant. The coolant in the coolant reserve tank 6 can be delivered to the coolant delivery tank 5 through the make-up water pipe 30 to ensure the recycling of the coolant.

[0043] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present utility model to achieve substantially the same technical effects are all covered by the protection scope of the present utility model.

Claims

1. One-piece drive axle assembly, comprising a bridge housing, a speed reducer, a differential and half shafts are arranged in the bridge housing, first brakes and second brakes are respectively connected to the end portions of the two half shafts, oil seal sleeves are arranged between the first brakes and the second brakes and the bridge housing, oil seals are installed in the oil seal sleeves, and an input shaft sleeve is arranged on the top surface of the bridge housing; It is characterized in that: Coolant delivery tanks and coolant reserve tanks are arranged on the top surface of the bridge housing on both sides of the input shaft sleeve, coolant jackets are respectively arranged on the front and rear side surfaces of the bridge housing, and the coolant delivery tanks, the coolant reserve tanks, the coolant jackets, the input shaft sleeve and the oil seal sleeves are connected through coolant delivery pipe fittings for cooling and temperature reduction of the bridge housing, the oil seals and the input shaft sleeve.

2. The integrated drive axle assembly according to claim 1, wherein: The coolant delivery pipe fittings include a coolant output pipe, a liquid distribution pipe, a diversion pipe, a return pipe and a make-up water pipe. The coolant delivery tank is connected to the liquid distribution pipe through the coolant output pipe. The liquid distribution pipe communicates with the input shaft sleeve and the oil seal sleeve on one side of the first brake. The input shaft sleeve communicates with the oil seal sleeve on one side of the second brake through the diversion pipe. The oil seal sleeve communicates with the coolant jacket through the return pipe. The coolant reserve tank communicates with the coolant delivery tank through the make-up water pipe.

3. The integrated drive axle assembly according to claim 2, wherein: A liquid infusion pump, a first liquid level sensor and a second liquid level sensor are arranged in the coolant delivery tank. The liquid infusion pump is connected to the coolant output pipe, and the first liquid level sensor is located below the second liquid level sensor.

4. The integrated drive axle assembly according to claim 2, wherein: The coolant jacket includes a jacket body, a folded edge formed by folding along the edge of the jacket body, and heat dissipation fins connected to the folded edge and the jacket body. The heat dissipation fins are evenly distributed on the inner side surface of the jacket body, and a plurality of diversion holes are arranged on the heat dissipation fins.

5. The integrated drive axle assembly according to claim 4, wherein: Through holes are arranged on the folded edges on both sides, and the through holes communicate with the return pipe.

6. The integrated drive axle assembly according to claim 4, wherein: The coolant delivery tank is connected to the coolant jacket through a return plate for guiding the cooling water in the coolant jacket into the coolant delivery tank to realize the recycling of the coolant.

7. The integrated drive axle assembly according to claim 6, wherein: The return plate is provided with a card slot, a return groove and a mounting hole. The card slot matches the coolant jacket. A return hole is arranged on the folded edge. A through groove is arranged on the coolant delivery tank. The return hole communicates with the through groove through the return groove. The return plate is fixedly connected to the bridge housing by screwing a screw through the mounting hole.

8. The integrated drive axle assembly according to claim 1, wherein: The coolant jacket is connected to the bridge housing through a reinforcement mechanism to realize the fixed connection between the coolant jacket and the bridge housing.

9. The integrated drive axle assembly according to claim 8, wherein: The reinforcement mechanism includes a U-shaped frame, clamping blocks and fastening rods. The clamping blocks are arranged at both ends of the U-shaped frame, and the two clamping blocks are connected through the fastening rods.

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