An integrated differential rear axle

Abstract

The utility model provides a kind of integrated differential rear axle belongs to vehicle transmission component technical field.It solves the problem of the gravity of existing rear axle, large, assembly process complex, the integrated differential rear axle, including main casing, gear box cover and output end cover, main casing side is equipped with gear installation cavity, and the other side of the main casing is equipped with differential installation cavity, gear installation cavity side is equipped with change gear set, differential installation cavity is equipped with differential, differential is equipped with bevel gear shaft and bevel gear disc that mutually engage transmission, bevel gear shaft is connected with change gear set, differential installation cavity and gear installation cavity are equipped with several sealed bearings, bevel gear shaft is fixed on sealed bearing, the utility model has the advantages of simple and convenient dismounting, small volume and small weight.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle transmission components, and relates to a differential rear axle, particularly an integrated differential rear axle. Background Technology

[0002] The differential rear axle is the core drive assembly of a rear-wheel drive vehicle. Essentially, it's a sophisticated mechanical system integrating a final drive, differential, and half-shafts. Its primary task is to convert the longitudinal rotation from the driveshaft into lateral rotation via a set of bevel gears in the final drive, providing the necessary reduction and torque amplification to the wheels. The most crucial function is achieved by the differential, which, through a clever planetary gear mechanism, automatically allows the left and right drive wheels to rotate at different speeds when the vehicle is turning. This balances the speed discrepancies caused by differences in the driving paths of the inner and outer wheels, ensuring smooth and stable steering. Differentials are often used in conjunction with differential locks.

[0003] The transmission differential rear axle is connected to the external gearbox via a transmission bevel gear to connect the power. This is because the gearbox and differential structure are usually designed and supplied by different manufacturers. The advantage of this is that different parts can be matched with different usage scenarios. However, the split structure will lead to an increase in weight, and the drive shaft usually needs to be long enough to install, which means that the vehicle chassis needs to arrange more space to accommodate the transmission components, resulting in a reduction in the comfort of the vehicle. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a small-volume, low-weight integrated differential rear axle.

[0005] The objective of this utility model can be achieved through the following technical solution: An integrated differential rear axle, characterized in that it includes a main housing, a gearbox cover, and an output end cover. A gear mounting cavity is provided on one side of the main housing, and a differential mounting cavity is provided on the other side of the main housing. A transmission gear set is provided on one side of the gear mounting cavity. A differential is provided in the differential mounting cavity. The differential is provided with a bevel gear shaft and a bevel gear disc that mesh with each other. The bevel gear shaft is connected to the transmission gear set. A plurality of sealed bearings are provided between the differential mounting cavity and the gear mounting cavity. The bevel gear shaft is fixed on the sealed bearings.

[0006] In the aforementioned integrated differential rear axle, a differential lock is provided in the differential mounting cavity, and a differential lock control unit is provided on the main housing.

[0007] In the aforementioned integrated differential rear axle, the side gear set is provided with an output gear, the bevel gear shaft is fixed to the output gear, the end of the bevel gear shaft is provided with a connecting spline, the connecting spline is provided with a flange, and the flange is provided with a locking bolt.

[0008] In the aforementioned integrated differential rear axle, both the gearbox cover and the output end cover are equipped with oil injection bolts.

[0009] Compared with existing technologies, this integrated differential rear axle simplifies the overall assembly of the differential rear axle by integrating the transmission gear set and the differential into one unit, reducing the installation process during vehicle assembly. The integrated structure also reduces the size and weight of the housing, making the vehicle more fuel-efficient. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of the integrated differential rear axle.

[0011] Figure 2 This is a schematic diagram of the integrated differential rear axle transmission structure.

[0012] Figure 3 This is a structural schematic diagram of the main housing of the integrated differential rear axle.

[0013] In the diagram, 1. Differential lock control unit; 2. Main housing; 3. Gearbox cover; 4. Flange; 5. Output end cover; 6. Oil filler bolt; 7. Bevel gear disc; 8. Output gear; 9. Bevel gear shaft; 10. Connecting spline; 11. Locking bolt; 12. Sealed bearing; 13. Transmission gear set; 14. Differential lock; 15. Differential; 16. Differential mounting cavity; 17. Gear mounting cavity. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] like Figure 1 , 2 As shown in Figure 3, this integrated differential rear axle is characterized by comprising a main housing 2, a gearbox cover 3, and an output end cover 5. The main housing 2 has a gear mounting cavity 17 on one side and a differential mounting cavity 16 on the other side. A transmission gear set 13 is located on one side of the gear mounting cavity 17. A differential 15 is located within the differential mounting cavity 16. The differential 15 has a bevel gear shaft 9 and a bevel gear disc 7 that mesh and drive each other. The bevel gear shaft 9 is connected to the transmission gear set 13. Several sealed bearings 12 are provided between the differential mounting cavity 16 and the gear mounting cavity 17. The bevel gear shaft 9 is fixed to the sealed bearings 12. The differential 15 and the transmission gears are both located on the main housing 2. The sealed bearings 12 separate the two cavities, allowing the transmission gear set 13 and the differential 15 to use separate oil circuits. The integrated structure combines transmission and differential functions, making vehicle assembly faster.

[0016] Preferably, the differential mounting cavity 16 is provided with a differential lock 14, the main housing 2 is provided with a differential lock 14 control unit 1, and the main body of the differential lock 14 is also provided in the main housing 2, which has a higher degree of integration and makes the overall replacement more convenient.

[0017] Preferably, the side gear set is provided with an output gear 8, the bevel gear shaft 9 is fixed on the output gear 8, the end of the bevel gear shaft 9 is provided with a connecting spline 10, the connecting spline 10 is provided with a flange 4, the flange 4 is provided with a locking bolt 11, the flange 4 transmits power to the flange 4 through the connecting spline 10, and the power is re-transmitted through the flange 4.

[0018] Preferably, both the gearbox cover 3 and the output end cover 5 are provided with oil injection bolts 6.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document frequently uses terms such as differential lock 14 control unit 1, main housing 2, gearbox cover 3, flange 4, output end cover 5, oil injection bolt 6, bevel gear disc 7, output gear 8, bevel gear shaft 9, connecting spline 10, locking bolt 11, sealed bearing 12, transmission gear set 13, differential lock 14, differential 15, differential mounting cavity 16, gear mounting cavity 17, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An integrated differential rear axle, characterized in that, The system includes a main housing (2), a gearbox cover (3), and an output end cover (5). The main housing (2) has a gear mounting cavity (17) on one side and a differential mounting cavity (16) on the other side. A transmission gear set (13) is provided on one side of the gear mounting cavity (17). A differential (15) is provided in the differential mounting cavity (16). The differential (15) has a bevel gear shaft (9) and a bevel gear disc (7) that mesh with each other. The bevel gear shaft (9) is connected to the transmission gear set (13). Several sealed bearings (12) are provided between the differential mounting cavity (16) and the gear mounting cavity (17). The bevel gear shaft (9) is fixed on the sealed bearings (12).

2. The integrated differential rear axle according to claim 1, characterized in that, The differential mounting cavity (16) is provided with a differential lock (14), and the main housing (2) is provided with a differential lock (14) control unit (1).

3. The integrated differential rear axle according to claim 1, characterized in that, The gear set (13) is provided with an output gear (8), the bevel shaft (9) is fixed on the output gear (8), the end of the bevel shaft (9) is provided with a connecting spline (10), the connecting spline (10) is provided with a flange (4), and the flange (4) is provided with a locking bolt (11).

4. The integrated differential rear axle according to claim 1, characterized in that, Both the gearbox cover (3) and the output end cover (5) are equipped with oil injection bolts (6).

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