3.5-ton new energy electric drive axle housing assembly

Abstract

The utility model discloses a 3.5-ton new energy electric drive axle housing assembly, which belongs to the field of automobile parts and comprises a cast axle housing body, a cavity is arranged at the center of the lower surface of the cast axle housing body, the cast axle housing body is integrally cast by an axle housing cover, an ABS (acrylonitrile butadiene styrene) support seat and a plate spring seat, a blind hole is arranged on the surface of the cast axle housing body, and the blind hole is communicated with the cavity. The bottom of the blind hole is of a closed structure, the axle housing cover, the ABS support base and the plate spring base are integrally integrated, the integrated manufacturing process is utilized, all the components are cooperatively stressed, the overall structural strength of the axle housing is effectively enhanced, meanwhile, a hole in a main reducer mounting face is designed to be the blind hole, and the improvement can avoid a leakage path possibly generated by a through hole, so that the service life of the axle housing is prolonged. The hidden danger of oil leakage is solved from the structural level, the long-time oil leakage problem is thoroughly solved while the rigidity of the axle housing is remarkably improved and the use requirement of a vehicle under complex working conditions is met, and the reliability and durability of the axle housing are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a 3.5-ton new energy electric drive axle housing assembly. Background Technology

[0002] The 3.5-ton class new energy electric drive axle housing is one of the key components for load-bearing and torque transmission in the axle assembly of new energy electric drive vehicles. Its main function is to ensure load-bearing and torque transmission, realize longitudinal torque transmission and lateral torque transmission, and achieve differential speed capability. In addition to load-bearing, it also needs to ensure lubrication and have good NVH performance under the drive of high-speed motor. Therefore, the 3.5-ton class new energy electric drive axle housing is designed as a hollow structure with an integrally cast rear cover to store lubricating oil. At the same time, it is necessary to ensure that the lubricating oil does not leak and to ensure the absolute sealing of the axle housing.

[0003] Currently, the 3.5-ton class new energy electric drive axle housing assembly has two structures: stamped and welded and cast. The stamped and welded structure is suitable for use in lightweight electric drive vehicles, but it has poor rigidity and overload performance. Currently, the rear cover of the cast axle housing is a separate structure from the axle housing, and the connection between the rear cover and the axle housing is fastened with a plain hole bolt. Due to the limitations of the separate structure and the plain hole, it is very easy to cause the risk of oil leakage.

[0004] Therefore, this utility model provides a 3.5-ton-class new energy electric drive axle housing assembly to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a 3.5-ton-class new energy electric drive axle housing assembly, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] The device includes a cast bridge housing body, with a cavity at the center of the lower surface of the cast bridge housing body. The cast bridge housing body is integrally cast from a bridge housing cover, an ABS bracket seat, and a leaf spring seat. Blind holes are formed on the surface of the cast bridge housing body, and the bottom of the blind holes is a closed structure.

[0010] As a preferred technical solution of this application, a central parking cable fixing bracket is provided on both sides of one side surface of the cast bridge housing body, and the central parking cable fixing bracket is symmetrically distributed on the side surface of the cast bridge housing body.

[0011] As a preferred technical solution of this application, a pipeline support is provided on the side surface of the cast bridge housing body. The pipeline support is L-shaped and has through holes on its surface.

[0012] As a preferred technical solution of this application, the surface of the cast bridge housing body is provided with a normally closed vent plug, which is located on one side of the pipeline support.

[0013] As a preferred technical solution of this application, an oil pipe bracket is provided on the side surface of the cast bridge housing body, and the oil pipe bracket is located on one side of the central parking cable fixing bracket.

[0014] As a preferred technical solution of this application, both ends of the cast bridge housing body are provided with half-shaft sleeves, and the interior of both half-shaft sleeves is hollow.

[0015] As a preferred technical solution of this application, shock absorber bracket assemblies are provided on both sides of the surface of the cast bridge housing body, mounting posts are provided on the surface of the shock absorber bracket assembly, and reinforcing mesh is provided on the side surface of the shock absorber bracket assembly. The reinforcing mesh is fixedly installed on the surface of the cast bridge housing body.

[0016] As a preferred technical solution of this application, a sensor wire bracket is installed on the side surface of the cast bridge housing body, and the surface of the sensor wire bracket is provided with mounting holes.

[0017] (III) Beneficial Effects

[0018] The axle housing cover, ABS bracket seat, and leaf spring seat are integrated into a single unit using a one-piece manufacturing process. This allows the components to work together to effectively enhance the overall structural strength of the axle housing. At the same time, the holes on the main reduction gear mounting surface are designed as blind holes. This improvement avoids leakage paths that may be caused by through holes, thus solving the potential oil leakage problem from a structural perspective. This significantly improves the rigidity of the axle housing, meets the needs of complex vehicle operating conditions, and completely solves the long-standing oil leakage problem, greatly improving the reliability and durability of the axle housing. Attached Figure Description

[0019] Figure 1 This is a first-view structural diagram of a 3.5-ton-class new energy electric drive axle housing assembly.

[0020] Figure 2 This is a top view schematic diagram of a 3.5-ton-class new energy electric drive axle housing assembly;

[0021] Figure 3 This is a schematic diagram of the second-view structure of a 3.5-ton-class new energy electric drive axle housing assembly.

[0022] Figure 4 This is a front view structural diagram of a 3.5-ton-class new energy electric drive axle housing assembly;

[0023] Figure 5 for Figure 3 A magnified structural diagram of point A in the middle.

[0024] In the picture:

[0025] 1. Cast axle housing body; 2. Blind hole; 3. Central parking cable fixing bracket; 4. Pipeline bracket; 5. Normally closed vent plug; 6. Oil pipe bracket; 7. Half shaft sleeve; 8. Shock absorber bracket assembly; 9. Reinforcing mesh; 10. Sensor wire bracket. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a 3.5-ton new energy electric drive axle housing assembly, including a cast axle housing body 1. A cavity is formed at the center of the lower surface of the cast axle housing body 1. The cast axle housing body 1 is integrally cast from axle housing cover, an ABS bracket seat and a leaf spring seat. A blind hole 2 is formed on the surface of the cast axle housing body 1. The bottom of the blind hole 2 is a closed structure.

[0028] The new energy electric drive cast axle housing body 1 adopts the overall integration of axle housing cover, ABS bracket seat and leaf spring seat. The overall integration reduces the connection points between parts, making the axle housing assembly more stable and able to better withstand various complex forces and torques from the road surface during vehicle operation, such as vertical force, driving force, braking force and lateral force, reducing the risk of failure due to loose connection or insufficient local strength, and extending the service life of the axle housing.

[0029] While improving the rigidity of the axle housing, the blind holes 2 also compress these sealing rings between the mating surfaces when the axle housing is connected to other components. This fills the tiny gaps between the components, forming an effective sealing barrier that prevents lubricating oil from leaking from the connection points, thus solving the oil leakage problem. At the same time, the blind holes 2 can serve as a positioning reference, facilitating the precise positioning and assembly of the axle housing and other components during the production process. This ensures the relative positional accuracy between the components, improves assembly efficiency and quality, and reduces assembly errors.

[0030] Both sides of one side surface of the cast axle housing body 1 are provided with central parking cable fixing brackets 3, which are symmetrically distributed on the side surface of the cast axle housing body 1.

[0031] Installing the central parking cable fixing bracket 3 on the electric drive axle housing can provide an accurate and stable fixing point for the parking cable, ensuring that the parking cable maintains the correct position and tension during vehicle operation and will not shift or loosen due to vibration, shaking or other factors. This ensures that the parking brake system can work reliably and effectively prevents safety hazards such as vehicle rollaway when parked.

[0032] The side surface of the cast bridge housing body 1 is provided with a pipeline support 4. The pipeline support 4 is L-shaped and has through holes on its surface.

[0033] During vehicle operation, the electric drive axle will vibrate and shake, which helps maintain the appropriate slack and direction of the pipeline during vehicle operation, preventing breakage due to excessive pulling and ensuring the reliability of pipeline connections. The pipeline bracket 4 can fix the pipeline in a suitable position, keeping it at a safe distance from other components to avoid wear and damage.

[0034] The surface of the cast bridge housing body 1 is provided with a normally closed vent plug 5, which is located on one side of the pipeline support 4.

[0035] When the new energy electric drive axle is running, the internal gears, bearings and other components rotate at high speed. Factors such as the agitation of lubricating oil and the heat generated by the motor will cause the air temperature and pressure inside the axle housing to rise. The normally closed vent plug 5 can automatically open when the pressure reaches a certain value to release the excess pressure and prevent problems such as damage to the seals and lubricating oil leakage caused by excessive internal pressure in the axle housing.

[0036] The side surface of the cast bridge housing body 1 is provided with an oil pipe bracket 6, which is located on one side of the central parking cable fixing bracket 3.

[0037] During the operation of new energy vehicles, the electric drive axle will vibrate and sway due to road conditions. The oil pipe bracket 6 can firmly fix the oil pipe to the axle housing, preventing the oil pipe from shifting or swaying due to vibration, avoiding collision and friction between the oil pipe and other components, thereby protecting the integrity of the oil pipe and ensuring its normal operation.

[0038] Both ends of the cast bridge housing body 1 are provided with half-shaft sleeves 7, and the interior of both half-shaft sleeves 7 is hollow.

[0039] Both sides of the surface of the cast bridge housing body 1 are provided with shock absorber bracket assemblies 8. The surface of the shock absorber bracket assembly 8 is provided with mounting posts, and the side surface of the shock absorber bracket assembly 8 is provided with reinforcing mesh 9. The reinforcing mesh 9 is fixedly installed on the surface of the cast bridge housing body 1.

[0040] The shock absorber bracket assembly 8 provides a precise mounting position and angle for the shock absorber, ensuring that the shock absorber performs at its best, effectively buffering the vibration and impact generated by the electric drive axle during driving, and improving the vehicle's driving comfort and stability.

[0041] The reinforced grid 9 can evenly distribute the various stresses borne by the electric drive bridge housing over a larger area, avoiding stress concentration in certain specific parts of the bridge housing, improving the overall strength and deformation resistance of the bridge housing, and enabling it to withstand greater loads.

[0042] A sensor wire bracket 10 is mounted on the side surface of the cast bridge housing body 1, and mounting holes are provided on the surface of the sensor wire bracket 10.

[0043] During the operation of new energy vehicles, the electric drive axle will vibrate and shake. The sensor wire bracket 10 can firmly fix the sensor wires, prevent them from directly contacting or rubbing against the axle housing or other components, prevent wear on the wire sheath, and thus prevent short circuits and other faults caused by exposed internal wires, thereby extending the service life of the wires.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A 3.5-ton new energy electric drive axle housing assembly, comprising a cast axle housing body (1), characterized in that: The center of the lower surface of the casting bridge shell body (1) is provided with a cavity, the casting bridge shell body (1) is integrally cast by bridge shell cover, ABS support seat and leaf spring seat, the surface of the casting bridge shell body (1) is provided with a blind hole (2), and the bottom of the blind hole (2) is a closed structure.

2. The 3.5-ton new energy electric drive axle housing assembly according to claim 1, characterized in that: The both sides of the side surface of the casting bridge shell body (1) are provided with central parking cable fixed supports (3), and the central parking cable fixed supports (3) are symmetrically distributed on the side surface of the casting bridge shell body (1).

3. The 3.5-ton new energy electric drive axle housing assembly according to claim 1, characterized in that: The side surface of the casting bridge shell body (1) is provided with a pipeline support (4), the shape of the pipeline support (4) is L-shaped, and the surface of the pipeline support (4) is provided with a through hole.

4. The 3.5-ton new energy electric drive axle housing assembly according to claim 3, characterized in that: The surface of the casting bridge shell body (1) is provided with a normally closed vent plug (5), and the normally closed vent plug (5) is arranged on one side of the pipeline support (4).

5. The 3.5-ton new energy electric drive axle housing assembly according to claim 2, characterized in that: The side surface of the casting bridge shell body (1) is provided with an oil pipe support (6), and the oil pipe support (6) is arranged on one side of one of the central parking cable fixed supports (3).

6. The 3.5-ton new energy electric drive axle housing assembly according to claim 1, characterized in that: Both ends of the casting bridge shell body (1) are provided with half shaft sleeves (7), and the interiors of the half shaft sleeves (7) on both sides are hollow.

7. The 3.5-ton new energy electric drive axle housing assembly according to claim 1, characterized in that: The both sides of the surface of the casting bridge shell body (1) are provided with shock absorber support assemblies (8), the surface of the shock absorber support assembly (8) is provided with a mounting column, the side surface of the shock absorber support assembly (8) is provided with a reinforcing grid (9), and the reinforcing grid (9) is fixedly installed on the surface of the casting bridge shell body (1).

8. The 3.5-ton new energy electric drive axle housing assembly according to claim 1, characterized in that: The side surface of the casting bridge shell body (1) is provided with a sensor wire support (10), and the surface of the sensor wire support (10) is provided with a mounting hole.

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