Four-motor parallel-shaft planetary row power coupling electric drive bridge

Abstract

The utility model provides a kind of four motor parallel axis planetary array power coupling electric drive bridge.The four motor parallel axis planetary array power coupling electric drive bridge includes first input unit, second input unit, intermediate unit and output unit, the first input unit includes two first motors, connects the intermediate unit, the second input unit includes two second motors, and the intermediate unit is connected by clutch mechanism, the intermediate unit is equipped with gear shifting mechanism, and is connected the output unit, the output unit is equipped with auxiliary motor.The four motor parallel axis planetary array power coupling 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 parallel-axis planetary gearbox power coupling 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 parallel-axis planetary gearbox power coupling electric drive axle that solves the aforementioned problems.

[0004] A four-motor parallel-axis planetary gearbox power coupling electric drive bridge includes a first input unit, a second input unit, an intermediate unit, and an output unit. The first input unit includes two first motors connected to the intermediate unit. The second input unit includes two second motors connected to the intermediate unit via a clutch mechanism. The intermediate unit is equipped with a shifting mechanism and is connected to the output unit. The output unit is equipped with an auxiliary motor.

[0005] In a preferred embodiment of the four-motor parallel-axis planetary gearbox power coupling electric drive bridge provided by this utility model, the first motor shaft end is provided with a first input tooth and connected to a first input shaft, the first input shaft being connected to the intermediate unit; the second motor shaft end is provided with a second input tooth and connected to a second input shaft, the second input shaft being provided with the clutch mechanism.

[0006] The first input shaft is fixedly provided with a first large tooth and a first small tooth. The first small tooth meshes with two first input teeth at the same time, and the first large tooth is connected to the intermediate unit. The second input shaft is rotatably provided with a second large tooth and fixedly provided with a second small tooth. The second small tooth meshes with two second input teeth at the same time, and the second large tooth is connected to the intermediate unit. The clutch mechanism is provided between the second large tooth and the second input shaft.

[0007] The second input shaft has an input planetary gear set between the second pinion and the clutch mechanism. The sun gear of the input planetary gear set is connected to the second pinion through the second input shaft, and the planet carrier is connected to the clutch mechanism through the second input shaft.

[0008] In a preferred embodiment of the four-motor parallel-shaft planetary gear drive bridge provided by this utility model, the intermediate unit includes an intermediate shaft, an intermediate planetary gear set, and intermediate gears. The planet carrier of the intermediate planetary gear set is connected to the output unit. The shifting mechanism is provided between the planet carrier and the ring gear. The sun gear is connected to the intermediate shaft, and the intermediate shaft is provided with the intermediate gears. The intermediate gears mesh with the first large gear and the second large gear.

[0009] In a preferred embodiment of the four-motor parallel-shaft planetary gearbox power coupling electric drive bridge provided by this utility model, the output unit includes a differential, a left half-shaft and a right half-shaft, the planet carrier of the intermediate planetary gearbox is connected to the outside of the differential housing, and the left half-shaft and the right half-shaft are connected to the inside of the differential.

[0010] Compared with existing technologies, the four-motor parallel-axis planetary gearbox power coupling electric drive bridge provided by this utility model has the following beneficial effects: 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 design, which can select the most suitable gear according to different working conditions and optimize power output. At the same time, the two-speed transmission design combined with the configuration of the auxiliary motor at the output end provides flexible operation and further 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 a design with a central planetary gear set for the shifting mechanism, resulting in a more compact transmission 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 the four-motor parallel-axis planetary gearbox power coupling electric drive bridge provided by this utility model.

[0016] The following are the numbered components in the diagram: First motor 11, First input gear 12, First input shaft 13, First large gear 14, First small gear 15, Second motor 21, Second input gear 22, Second input shaft 23, Second large gear 24, Second small gear 25, Input planetary gear set 26, Clutch mechanism 27, Intermediate shaft 31, Intermediate planetary gear set 32, Intermediate gear 33, Shift mechanism 34, Differential 41, Left half shaft 42, Right half shaft 43, Auxiliary motor 5, Differential lock 6. 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 parallel-axis planetary gearbox power coupling electric drive bridge provided by this utility model.

[0019] The four-motor parallel-axis planetary gearbox power-coupled electric drive bridge includes a first input unit, a second input unit, an intermediate unit, and an output unit.

[0020] The first input unit includes a first motor 11, a first input tooth 12, a first input shaft 13, a first large tooth 14, and a first small tooth 15. The shaft ends of the two first motors 11 are respectively provided with the first input tooth 12. The first input shaft 13 is parallel to the first motors 11, and the first large tooth 14 and the first small tooth 15 are fixedly provided at its two ends respectively. The first small tooth 15 simultaneously meshes with both first input teeth 12. The size of the first input tooth 12 is smaller than that of the first small tooth 15.

[0021] The second input unit includes a second motor 21, a second input gear 22, a second input shaft 23, a second large gear 24, a second small gear 25, an input planetary gear set 26, and a clutch mechanism 27.

[0022] The shafts of the two second motors 21 are each provided with a second input tooth 22. The second input shaft 23 is parallel to the second motors 22, with a second large tooth 24 rotatably provided at one end and a second small tooth 25 fixed at the other end. The second small tooth 25 meshes with both second input teeth 22 simultaneously. The size of the second input tooth 22 is smaller than that of the second small tooth 25.

[0023] A clutch mechanism 27 is provided between the second large gear 24 and the second input shaft 23, allowing the second input shaft 23 and the second large gear 24 to be engaged or disengaged. The second input shaft 23 is disconnected between the clutch mechanism 27 and the second small gear 25, and is provided with an input planetary gear set 26. The sun gear of the input planetary gear set 26 is connected to the second small gear 25 via a section of the second input shaft 23, and the planet carrier of the input planetary gear set 26 is connected to the clutch mechanism 27 via another section of the second input shaft 23.

[0024] The intermediate unit includes an intermediate shaft 31, an intermediate planetary gear set 32, an intermediate gear 33, and a shifting mechanism 34. One end of the intermediate shaft 31 is provided with the intermediate gear 33, and the other end is connected to the sun gear of the intermediate planetary gear set 32. The intermediate gear 33 meshes with both the first major gear 14 and the second major gear 24.

[0025] A shifting mechanism 34 is provided on the outer side of the intermediate planetary gear set 32. The shifting mechanism 34 switches between three states: the gear ring of the intermediate planetary gear set 32 ​​is fixed, the gear ring is connected to the planet carrier, or it is neither fixed nor connected to the planet carrier. These correspond to low gear, high gear, and neutral, respectively.

[0026] Specifically, when the shift mechanism 34 is switched to the left position, the gear sleeve connects the gear ring of the intermediate planetary gear set 32 ​​to the fixed spline, enabling low-gear transmission; when switched to the right position, the gear sleeve connects the gear ring of the intermediate planetary gear set 32 ​​to the planet carrier, enabling high-gear transmission. Switching to the center position results in neutral.

[0027] The planet carrier of the intermediate planetary gear set 32 ​​is connected to the output unit. Specifically, the output unit includes a differential 41, a left half-shaft 42, and a right half-shaft 43. The planet carrier of the intermediate planetary gear set 32 ​​is connected to the housing of the differential 41, and the left half-shaft 42 and the right half-shaft 43 are connected to the internal gears of the differential 41.

[0028] An auxiliary motor 5 and a differential lock 6 are also provided on the left half-shaft 42 and the right half-shaft 43. 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 installation 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.

[0029] Under the aforementioned mechanism, the power of the first motor 11 is sequentially coupled to the intermediate shaft 31 via the first input tooth 12, the first small tooth 15, the first large tooth 14, and the intermediate tooth 33. The power of the second motor 21 is sequentially coupled to the intermediate shaft 31 via the second input tooth 22, the second small tooth 25, the input planetary gear set 26, the clutch mechanism 27, the second large tooth 24, and the intermediate tooth 33.

[0030] Subsequently, the gear shifting mechanism 34 switches the intermediate planetary gear set 32 ​​to drive the differential 41 in low or high gear, which in turn drives the left half shaft 42 and the right half shaft 43 to drive the wheels on both sides.

[0031] 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-axis planetary gearbox power-coupled electric drive bridge, characterized in that: It includes a first input unit, a second input unit, an intermediate unit, and an output unit. The first input unit includes two first motors connected to the intermediate unit. The second input unit includes two second motors connected to the intermediate unit via a clutch mechanism. The intermediate unit is equipped with a shifting mechanism and is connected to the output unit. The output unit is equipped with an auxiliary motor.

2. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 1, characterized in that: The first motor shaft has a first input tooth and is connected to a first input shaft, which is connected to the intermediate unit; the second motor shaft has a second input tooth and is connected to a second input shaft, which has the clutch mechanism.

3. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 2, characterized in that: The first input shaft is fixedly provided with a first large tooth and a first small tooth. The first small tooth meshes with two first input teeth at the same time, and the first large tooth is connected to the intermediate unit. The second input shaft is rotatably provided with a second large tooth and fixedly provided with a second small tooth. The second small tooth meshes with two second input teeth at the same time, and the second large tooth is connected to the intermediate unit. The clutch mechanism is provided between the second large tooth and the second input shaft.

4. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 3, characterized in that: The second input shaft has an input planetary gear set between the second pinion and the clutch mechanism. The sun gear of the input planetary gear set is connected to the second pinion through the second input shaft, and the planet carrier is connected to the clutch mechanism through the second input shaft.

5. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 3 or 4, characterized in that: The intermediate unit includes an intermediate shaft, an intermediate planetary gear set, and an intermediate gear set. The planet carrier of the intermediate planetary gear set is connected to the output unit. The shifting mechanism is provided between the planet carrier and the gear ring. The sun gear is connected to the intermediate shaft, and the intermediate shaft is provided with the intermediate gear set.

6. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 5, characterized in that: The intermediate tooth meshes with the first large tooth and the second large tooth.

7. The four-motor parallel-axis planetary gearbox power coupling electric drive bridge according to claim 5, characterized in that: The output unit includes a differential, a left half-shaft, and a right half-shaft. The planet carrier of the intermediate planetary gear set is connected to the outside of the differential housing, and the left half-shaft and the right half-shaft are connected to the inside of the differential.

Images