Four-motor parallel shaft composite wheel edge planetary wheel row integrated electric drive bridge

Abstract

The utility model provides a kind of four motor parallel shaft composite wheel edge planetary gear set integrated electric drive bridge.The four motor parallel shaft composite wheel edge planetary gear set integrated electric drive bridge includes input unit, intermediate unit, output unit and wheel edge planetary set connected in turn, the input unit includes two motors, connects same intermediate unit, two input units, respectively connect two intermediate units, the intermediate unit is equipped with gear shifting mechanism, two intermediate units connect same output unit, the output unit is equipped with auxiliary motor and differential lock, and simultaneously connect two wheel edge planetary sets.The four motor parallel shaft composite wheel edge planetary gear set integrated electric drive bridge provided by the utility model solves the problem that the existing electric drive bridge scheme cannot meet the use requirements.

Description

Technical Field

[0001] This utility model relates to the field of electric drive axles, specifically to an integrated electric drive axle with a four-motor parallel shaft composite wheel-side planetary gear array. Background Technology

[0002] Compared to passenger vehicle electric drive systems, commercial vehicle electric drive systems face multiple parallel technological approaches. This is due to the diverse types and uses of commercial vehicles, resulting in the industry's characteristics of small-batch production, multiple varieties, and customization. Currently, the new energy heavy-duty truck market is rapidly expanding, with designs using central electric drive assemblies as the power system becoming increasingly common. As the core component of the power system, the performance of the central electric drive assembly directly impacts the vehicle's overall efficiency and operating costs. Since some new energy heavy-duty trucks are designed for specific operating conditions—for example, a certain model requires high transmission efficiency, powerful performance, and ease of maintenance and repair—the currently mainstream integrated electric drive axle solution, while offering advantages in transmission efficiency and smoothness, cannot meet these requirements. Utility Model Content

[0003] To address the issue that existing electric drive axle solutions cannot meet usage requirements, this invention provides a four-motor parallel shaft composite wheel-side planetary gear integrated electric drive axle that solves the aforementioned problem.

[0004] An integrated electric drive bridge with four motors, parallel shafts, composite wheel-side planetary gear sets, and wheel-side planetary gear sets is provided. The input unit includes two motors connected to the same intermediate unit. The two input units are respectively connected to the two intermediate units. The intermediate unit is provided with a shifting mechanism. The two intermediate units are connected to the same output unit. The output unit is provided with an auxiliary motor and a differential lock, and is simultaneously connected to the two wheel-side planetary gear sets.

[0005] In a preferred embodiment of the four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge provided by this utility model, the input unit includes an input shaft, a coupling tooth, an input large tooth, and an input small tooth fixedly disposed on the input shaft. The coupling tooth connects to the motor, and the input large tooth and the input small tooth connect to the intermediate unit. The motor shaft end is provided with motor teeth, and the coupling tooth connects two of the motor teeth simultaneously.

[0006] In a preferred embodiment of the four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge provided by this utility model, the intermediate unit includes an intermediate shaft, a small intermediate tooth and a large intermediate tooth rotatably disposed on the intermediate shaft, and a connecting tooth fixedly disposed on the intermediate shaft. The small intermediate tooth connects to the large input tooth, the large intermediate tooth connects to the small input tooth, and the connecting tooth connects to the output unit. A shifting mechanism is provided between the small intermediate tooth and the large intermediate tooth on the intermediate shaft, through which the small intermediate tooth is connected to the intermediate shaft, or the large intermediate tooth is connected to the intermediate shaft.

[0007] In a preferred embodiment of the four-motor parallel shaft composite wheel-side planetary gear set integrated electric drive axle provided by this utility model, the output unit includes a differential, connecting the left half shaft and the right half shaft of the differential, the connecting gear connecting the housing of the differential, and the left half shaft and the right half shaft respectively connecting to one of the wheel-side planetary gear sets.

[0008] Compared with existing technologies, the four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge provided by this utility model has the following beneficial effects:

[0009] 1. The solution provided by this utility model uses two power routes to effectively couple the power from four motors, which can reduce energy loss and improve transmission efficiency, achieving high-efficiency conversion. Furthermore, the configuration of multiple input motors combined with output auxiliary motors provides powerful power output, improves system flexibility and efficiency, and adapts to the power requirements of heavy-duty mining trucks.

[0010] 2. The solution provided by this utility model adopts a dual intermediate shaft synchronous two-speed transmission design, which can select the most suitable gear according to different working conditions and optimize power output. The two-speed transmission combined with the auxiliary motor configuration at the output end has flexible operation and can further optimize the power structure, so that the mine car can maintain the best performance under different loads and speeds.

[0011] 3. The solution provided by this utility model adopts a parallel shaft combined with a wheel-side planetary gear set design, which has high reliability and maintainability, simplifies daily maintenance and repair work, and reduces operating costs. The electric drive bridge can operate stably in various harsh mining environments and has strong environmental adaptability.

[0012] 4. The solution provided by this utility model is easy to achieve modular production, and can be quickly adjusted and customized according to different vehicle models and performance requirements, which greatly shortens the product development cycle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge.

[0014] The following are the labels in the diagram: Motor 11, Motor Gear 12, Input Shaft 13, Coupling Gear 14, Input Large Gear 15, Input Small Gear 16, Intermediate Shaft 21, Intermediate Small Gear 22, Intermediate Large Gear 23, Connecting Gear 24, Gear Shifting Mechanism 25, Differential 31, Left Half Shaft 32, Right Half Shaft 33, Ring Gear 34, Wheel-side Planetary Gear 4, Auxiliary Motor 5, Differential Lock 6. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figure 1 This is a schematic diagram of the integrated electric drive bridge with four motors, parallel shafts, composite wheel-side planetary gear sets, provided by this utility model.

[0017] The four-motor parallel shaft composite wheel-side planetary gear set integrated electric drive bridge includes an input unit, an intermediate unit, an output unit, a wheel-side planetary gear set 4, an auxiliary motor 5, and a differential lock 6.

[0018] The input unit includes a motor 11, motor teeth 12, an input shaft 13, a coupling tooth 14, a large input tooth 15, and a small input tooth 16. It comprises two motors 11 arranged side-by-side, each with a motor tooth 12 at its shaft end. The input shaft 13 is parallel to the motors 11, and its left end is fixedly equipped with a coupling tooth 14, which meshes with both motor teeth 12, combining the power from both motors 11. The large input tooth 15 and the small input tooth 16 are sequentially fixed to the right side of the coupling tooth 14.

[0019] The intermediate unit includes an intermediate shaft 21, an intermediate small gear 22, an intermediate large gear 23, a connecting gear 24, and a shifting mechanism 25. The intermediate shaft 21 is parallel to the input shaft 13. From left to right, the intermediate small gear 22, the intermediate large gear 23, and the connecting gear 24 are arranged in a rotatable manner. The intermediate small gear 22 is connected to the input large gear 15, and the intermediate large gear 23 is connected to the input small gear 16.

[0020] A shifting mechanism 25 is provided between the intermediate small tooth 22 and the intermediate large tooth 23 on the intermediate shaft 21. By switching the gear sleeve of the shifting mechanism 25, the intermediate small tooth 22 or the intermediate large tooth 23 can be connected to the intermediate shaft 21. When the gear sleeve of the shifting mechanism 25 moves to the right position, power is transmitted to the intermediate large tooth 23 through the input small tooth 16, which is a low gear; when it is in the left position, power is transmitted to the intermediate small tooth 22 through the input large tooth 15, which is a high gear.

[0021] The output unit includes a differential 31, a left half-shaft 32, and a right half-shaft 33. The differential 31 housing is equipped with a ring gear 34, which meshes with the connecting gear 24. Power is output to the intermediate shaft 21 via the intermediate large gear 23 or the intermediate small gear 22, then drives the differential 31 via the connecting gear 24 and the ring gear 34, and finally distributed to the left half-shaft 32 and the right half-shaft 33 through the differential 31.

[0022] The left half-shaft 32 and the right half-shaft 33 are respectively connected to the wheel-side planetary gear set 4 at their ends. The power distributed to the left half-shaft 32 and the right half-shaft 33 drives the wheel-side planetary gear set 4 on both sides. After being decelerated by the wheel-side planetary gear set 4, the power drives the wheels on both sides and drives the vehicle.

[0023] An auxiliary motor 5 and a differential lock 6 are also provided on the left half-shaft 32 and the right half-shaft 33. The auxiliary motor 5 is used for auxiliary braking or auxiliary driving, and the differential lock 6 is used to lock the differential 41. The setting of the auxiliary motor 5 and the differential lock 6 are common solutions, and those skilled in the art can easily understand and implement the above solutions. Therefore, only schematic illustrations are shown in the accompanying drawings.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge, characterized in that: The device includes an input unit, an intermediate unit, an output unit, and a wheel-side planetary gear set connected in sequence. The input unit includes two motors connected to the same intermediate unit. The two input units are respectively connected to the two intermediate units. The intermediate unit is equipped with a shifting mechanism. The two intermediate units are connected to the same output unit. The output unit is equipped with an auxiliary motor and a differential lock, and is simultaneously connected to the two wheel-side planetary gear sets.

2. The four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge according to claim 1, characterized in that: The input unit includes an input shaft, a coupling tooth, a large input tooth, and a small input tooth fixedly mounted on the input shaft. The coupling tooth is connected to the motor, and the large input tooth and the small input tooth are connected to the intermediate unit.

3. The four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge according to claim 2, characterized in that: The motor shaft end is provided with motor teeth, and the coupling tooth connects two motor teeth at the same time.

4. The four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge according to claim 2 or 3, characterized in that: The intermediate unit includes an intermediate shaft, a small intermediate tooth and a large intermediate tooth rotatably disposed on the intermediate shaft, and a connecting tooth fixedly disposed on the intermediate shaft. The small intermediate tooth is connected to the large input tooth, the large intermediate tooth is connected to the small input tooth, and the connecting tooth is connected to the output unit.

5. The four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge according to claim 4, characterized in that: The shifting mechanism is provided between the intermediate small tooth and the intermediate large tooth on the intermediate shaft, and the shifting mechanism connects the intermediate small tooth to the intermediate shaft or the intermediate large tooth to the intermediate shaft.

6. The four-motor parallel shaft composite wheel-side planetary gear integrated electric drive bridge according to claim 5, characterized in that: The output unit includes a differential, connecting the left and right half-shafts of the differential, with the connecting gears connecting to the housing of the differential, and the left and right half-shafts respectively connected to a wheel-side planetary gear set.

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