Four-motor two-gear parallel shaft compound planetary gear integrated electric drive bridge

Abstract

The utility model provides a kind of four motor two gear parallel shaft composite planetary array integrated electric drive bridge.The four motor two gear parallel shaft composite planetary array integrated electric drive bridge includes input unit, intermediate unit and output unit connected in turn, the input unit includes two motors, two input units are connected two intermediate units respectively, two intermediate units are connected the same output unit, the output unit is equipped with gear shifting mechanism, auxiliary motor and output planetary array, and the output planetary array is equipped with power regulating mechanism.The four motor two gear parallel shaft composite planetary array 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 bridges, specifically to a four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge. 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, two-speed parallel-axis composite planetary gear integrated electric drive axle that solves the aforementioned problems.

[0004] An integrated electric drive bridge with four motors, two gears, parallel shaft composite planetary gear, includes an input unit, an intermediate unit, and an output unit connected in sequence. The input unit includes two motors. The two input units are respectively connected to the two intermediate units. The two intermediate units are connected to the same output unit. The output unit is provided with a shifting mechanism, an auxiliary motor, and an output planetary gear. The output planetary gear is provided with a power adjustment mechanism.

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

[0006] The intermediate unit includes an intermediate shaft, and a central large tooth, a central small tooth, and a transmission tooth are fixedly disposed on the intermediate shaft. The input small tooth meshes with the transmission tooth, and the central large tooth and the central small tooth are connected to the output unit. The output unit includes an output shaft, and an output large tooth and an output small tooth are rotatably disposed on the output shaft. The output large tooth meshes with the central small tooth, and the output small tooth meshes with the central large tooth.

[0007] In a preferred embodiment of the four-motor two-speed parallel shaft composite planetary gear integrated electric drive bridge provided by this utility model, the shifting mechanism is provided between the large output tooth and the small output tooth on the output shaft. The shifting mechanism connects the large output tooth to the output shaft or the small output tooth to the output shaft.

[0008] In a preferred embodiment of the four-motor, two-speed parallel-shaft composite planetary gear integrated electric drive bridge provided by this utility model, the output shaft is disconnected and an output planetary gear set is provided. The sun gear and planet carrier of the output planetary gear set are respectively connected to the front and rear sections of the output shaft. The ring gear of the output planetary gear set is provided with the power adjustment structure. The power adjustment mechanism can fix the ring gear of the output planetary gear set, or connect the ring gear of the output planetary gear set to the planet carrier.

[0009] Compared with existing technologies, the four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge provided by this utility model has the following advantages:

[0010] 1. The solution provided by this utility model uses two power routes to effectively couple the power from different motors, which can reduce energy loss and improve transmission efficiency, achieving high-efficiency energy 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.

[0011] 2. The solution provided by this utility model adopts a two-speed transmission combined with power adjustment design, which can select the most suitable gear according to different working conditions and optimize power output. The configuration of the front and rear two-stage transmission mechanisms combined with the auxiliary motor at the output end provides flexible operation and optimizes the power structure, enabling the mine car to maintain optimal performance under different loads and speeds.

[0012] 3. The solution provided by this utility model adopts an output shaft shifting mechanism combined with an input planetary gear set power adjustment design, resulting in a more compact structure, improved transmission efficiency, and reduced energy waste. It also reduces the overall weight, contributing to improved fuel economy and operational performance of the mining truck.

[0013] 4. The solution provided by this utility model adopts a design combining a parallel shaft and a planetary gear set, 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.

[0014] 5. The solution provided by this utility model is easy to implement in 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

[0015] Figure 1 This is a schematic diagram of a four-motor, two-speed parallel-shaft composite planetary gear integrated electric drive bridge.

[0016] The following are the labels in the diagram: Motor 11, Two motor teeth 12, Input shaft 13, Input large tooth 14, Input small tooth 15, Intermediate shaft 21, Intermediate large tooth 22, Intermediate small tooth 23, Transmission tooth 24, Output shaft 31, Output large tooth 32, Output small tooth 33, Output planetary gear set 34, Auxiliary motor 35, Gear shifting mechanism 36, Power adjustment mechanism 37. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1 This is a schematic diagram of the four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge provided by this utility model. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge includes two input units, two intermediate units, and an output unit.

[0019] The input unit includes two motors 11, two motor teeth 12, an input shaft 13, a large input tooth 14, and a small input tooth 15. The ends of the shafts of the two motors 11 are respectively fixed with motor teeth 12. The left end of the input shaft 13 is fixed with the small input tooth 15, and the right end is fixed with the large input tooth 14. The input shaft 13 is parallel to the motors 11, and the two motor teeth 12 mesh with the same large input tooth 14.

[0020] The intermediate unit includes an intermediate shaft 21, an intermediate large tooth 22, an intermediate small tooth 23, and a transmission tooth 24. The intermediate shaft 21 is fixedly provided with the intermediate large tooth 22, transmission tooth 24, and intermediate small tooth 23 from left to right. The two input units are connected to the two intermediate units respectively. Specifically, the transmission teeth 24 of the two intermediate units mesh with the input small teeth 15 of the two input units respectively.

[0021] The output unit includes an output shaft 31, a large output gear 32, a small output gear 33, an output planetary gear set 34, an auxiliary motor 35, a shifting mechanism 36, and a power adjustment mechanism 37.

[0022] The output shaft 31 has a rotating small output tooth 33, a fixed shifting mechanism 36, and a rotating large output tooth 32, arranged sequentially from left to right.

[0023] Two intermediate units are connected to the same output unit. Specifically, the large intermediate tooth 22 of the two intermediate units meshes with the same small output tooth 33, and the small intermediate tooth 23 meshes with the same large output tooth 34. The shifting mechanism 36 switches between three states: the output shaft 31 is connected to the small output tooth 33, the output shaft 31 is connected to the large output tooth 32, and the output shaft 31 is not connected at all, thus realizing gear shifting.

[0024] An auxiliary motor 35 is provided on the right side of the output large gear 32 on the output shaft 31 for auxiliary braking or auxiliary driving. This is existing technology and will not be described in detail here.

[0025] The output shaft 31 is disconnected on the right side of the auxiliary motor 35 and is provided with an output planetary gear set 34. The sun gear of the output planetary gear set 34 faces left and is connected to a section of the output shaft 31 near the auxiliary motor 35. The planet carrier faces right and is connected to another section of the output shaft 31, and continues to connect to mechanisms such as the differential.

[0026] The output planetary gear set 34 is equipped with a power adjustment mechanism 37. The power adjustment mechanism 37 switches between three states: the gear ring of the output planetary gear set 34 is fixedly connected, the gear ring of the output planetary gear set 34 is connected to the planet carrier, and the gear ring of the output planetary gear set 34 is not connected, thereby realizing the adjustment.

[0027] The input shaft 13, intermediate shaft 21, and output shaft 31 are parallel. The diameter of the motor tooth 12 is smaller than that of the input small tooth 15, the diameter of the input small tooth 15 is smaller than that of the intermediate small tooth 23, the diameter of the transmission tooth 24 is larger than that of the intermediate large tooth 22, and the diameter of the transmission tooth 24 is smaller than that of the output small tooth 33.

[0028] In the aforementioned mechanism, the power from the motor 11 in the input unit sequentially passes through the motor teeth 12, the input large teeth 14, the input small teeth 15, and the transmission teeth 24 to the intermediate shaft 21. Then, it passes through the intermediate small teeth 23 and the output large teeth 32, or the intermediate large teeth 22 and the output small teeth 33, to the output shaft 31. After adjustment by the output planetary gear set 34, the power is transmitted to subsequent mechanisms such as the differential.

[0029] 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, two-speed parallel-axis composite planetary gear integrated electric drive bridge, characterized in that: It includes an input unit, an intermediate unit, and an output unit connected in sequence. The input unit includes two motors. The two input units are respectively connected to the two intermediate units. The two intermediate units are connected to the same output unit. The output unit is provided with a shifting mechanism, an auxiliary motor, and an output planetary gear set. The output planetary gear set is provided with a power adjustment mechanism.

2. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge according to claim 1, characterized in that: The input unit further includes an input shaft, a large input tooth and a small input tooth fixedly disposed on the input shaft, and a motor tooth fixedly disposed on the end of the motor shaft. The motor tooth meshes with the large input tooth, and the small input tooth is connected to the intermediate unit.

3. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge according to claim 2, characterized in that: The intermediate unit includes an intermediate shaft, a central large tooth, a central small tooth, and a transmission tooth fixedly disposed on the intermediate shaft. The input small tooth meshes with the transmission tooth, and the central large tooth and the central small tooth are connected to the output unit.

4. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge according to claim 3, characterized in that: The output unit includes an output shaft, with a large output tooth and a small output tooth rotatably disposed on the output shaft. The large output tooth meshes with the small output tooth, and the small output tooth meshes with the large output tooth.

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

6. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge according to claim 5, characterized in that: The output shaft is disconnected and equipped with the output planetary gear set, wherein the sun gear and planet carrier of the output planetary gear set are respectively connected to the front and rear sections of the output shaft.

7. The four-motor, two-speed parallel-axis composite planetary gear integrated electric drive bridge according to claim 6, characterized in that: The output planetary gear set has a gear ring equipped with the power adjustment mechanism, which can fix the gear ring of the output planetary gear set or connect the gear ring of the output planetary gear set to the planet carrier.

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