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

Abstract

The utility model provides a kind of four motor two gear parallel shaft composite planetary wheel integrated electric drive axle.The four motor two gear parallel shaft composite planetary wheel integrated electric drive axle includes two input units, two intermediate units and output unit, the input unit includes two motors, two the motor connection same intermediate unit, two the input unit is connected with one intermediate unit respectively, two the intermediate unit connection same output unit, one the intermediate unit is equipped with gear shifting mechanism, and the output unit is equipped with auxiliary motor.The four motor two gear parallel shaft composite planetary wheel integrated electric drive axle provided by the utility model solves the problem that existing electric drive axle scheme cannot meet the use requirement.

Description

Technical Field

[0001] This utility model relates to the field of electric drive bridges, specifically to an integrated electric drive bridge with four motors, two gears, parallel shafts, and composite planetary gears. 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 shaft composite planetary gear integrated electric drive axle that solves the aforementioned problems.

[0004] A four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge includes two input units, two intermediate units, and an output unit. Each input unit includes two motors, which are connected to the same intermediate unit. Each input unit is connected to one of the intermediate units, and the two intermediate units are connected to the same output unit. One of the intermediate units is equipped with a shifting mechanism, and the output unit is equipped with an auxiliary motor.

[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 intermediate unit includes a first intermediate unit and a second intermediate unit, one end of which is connected to an input unit and the other end of which is connected to the same output unit. The second intermediate unit is provided with the shifting mechanism.

[0006] The first intermediate unit includes a first intermediate shaft, with its two ends connected to an input unit and an output unit, respectively.

[0007] The second intermediate unit includes a second intermediate shaft, a third intermediate shaft, and a fourth intermediate shaft. The third intermediate shaft is equipped with the shifting mechanism. The second intermediate shaft is connected to another input unit, and the third intermediate shaft is connected to the output unit. The fourth intermediate shaft is connected to both the second and third intermediate shafts. The second and third intermediate shafts are coaxial, and the second and fourth intermediate shafts are parallel to the first and fourth intermediate shafts.

[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, when the shifting mechanism is switched to first gear, the power of the input unit connected to the second intermediate unit is transmitted to the output unit in sequence through the second intermediate shaft, the fourth intermediate shaft, and the third intermediate shaft; when switched to second gear, the power is transmitted to the output unit in sequence through the second intermediate shaft and the third intermediate shaft.

[0009] 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 unit includes planetary gears, the sun gear of the planetary gears is connected to the first intermediate shaft and the third intermediate shaft, and the gear ring is fixed.

[0010] The output unit also includes a differential and two half-shafts connected to the differential, and the planet carrier of the planetary gear is connected to the housing of the differential.

[0011] Compared with existing technologies, the four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge provided by this utility model has the following advantages: 1. The solution provided by this utility model adopts a four-motor design, plus an auxiliary motor arranged at the output end. While providing powerful power, it can also optimize the power structure, improve the system's flexibility and efficiency, and adapt to the power requirements of heavy mining trucks.

[0012] 2. The solution provided by this utility model adopts a design with two intermediate units, which allows the transmission to more effectively couple the power from different motors and reduce energy loss. The solution using a single intermediate unit for the shifting mechanism results in a simpler transmission structure and improved transmission efficiency.

[0013] 3. The solution provided by this utility model features a simple design and compact structure, which helps reduce material usage and thus lower the overall weight. The compact structure not only facilitates installation but also simplifies daily maintenance and repair, reducing operating costs. Due to its compact structure, it can operate stably in various harsh mining environments, demonstrating excellent environmental adaptability.

[0014] 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

[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 numbered components in the diagram: Input Unit 1, Motor 11, Input Gear 12, First Intermediate Unit 2, First Intermediate Shaft 21, First Front Gear 211, First Rear Gear 212, Second Intermediate Unit 3, Second Intermediate Shaft 31, Second Front Gear 311, Second Rear Gear 312, Third Intermediate Shaft 32, Third Front Gear 321, Third Rear Gear 322, Fourth Intermediate Shaft 33, Fourth Front Gear 331, Fourth Rear Gear 332, Output Unit 4, Planet Carrier 41, Coupling Gear 42, Planet Gear 43, Differential 44, Left Half Shaft 45, Right Half Shaft 46, Auxiliary Motor 5, Gear Shifting Mechanism 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 The schematic diagram of the four-motor two-speed parallel shaft composite planetary gear integrated electric drive bridge provided by this utility model is shown.

[0019] The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge includes two input units 1, two intermediate units, namely the first intermediate unit 2 and the second intermediate unit 3, an output unit 4, an auxiliary motor 5, and a shifting mechanism 6.

[0020] The input unit 1 includes two parallel and unidirectional motors 11, and the main shaft of the motor 11 is provided with input teeth 12.

[0021] The first intermediate unit 2 includes a first intermediate shaft 21. A first front tooth 211 and a first rear tooth 212 are fixedly provided at both ends of the first intermediate shaft 21. The first intermediate shaft 21 is parallel to the motor 11. The first front tooth 21 simultaneously meshes with two input teeth 12 in the input unit 1.

[0022] The second intermediate unit 3 includes a second intermediate shaft 31, a third intermediate shaft 32, and a fourth intermediate shaft 33. One end of the second intermediate shaft 31 is fixedly provided with a second front tooth 311, and the other end is slidably provided with a second rear tooth 312. One end of the third intermediate shaft 32 is slidably provided with a third front tooth 321, and the other end is fixedly provided with a third rear tooth 322. The two ends of the fourth intermediate shaft 33 are respectively fixedly provided with a fourth front tooth 331 and a fourth rear tooth 332. The third intermediate shaft 32 is provided with a shifting mechanism 6.

[0023] The second intermediate shaft 31 is coaxial with the third intermediate shaft 32 and parallel to the fourth intermediate shaft 33 and the first intermediate shaft 21. The second front tooth 311 simultaneously meshes with two input teeth 12 in another input unit 1. The second rear tooth 312 meshes with the fourth front tooth 331, and the third front tooth 321 meshes with the fourth rear tooth 332. The shifting mechanism 6 is located on the third intermediate shaft 32, between the third front tooth 321 and the second rear tooth 312. When shifting to first gear, the third intermediate shaft 32 is connected to the third front tooth 321; when shifting to second gear, the third intermediate shaft 32 is connected to the second rear tooth 312.

[0024] Output unit 4 includes planetary gears 43, a differential 44, a left half-shaft 45, and a right half-shaft 46. Planetary gears 43 include a sun gear, planetary gears, a planet carrier 41, and a ring gear. The ring gear is fixed. The planetary gears are common components, and their structure will not be described in detail. The sun gear has coupling teeth 42, with the first rear tooth 212 and the third rear tooth 322 meshing with the coupling teeth 42. The planet carrier 41 connects to the differential housing 44. The left half-shaft 45 and the right half-shaft 46 are connected to the differential 44.

[0025] The auxiliary motor 5 connects to both the left half-shaft 45 and the right half-shaft 46, assisting in braking or providing power. For ease of illustration, the attached diagram shows only the right half-shaft 46 connected.

[0026] In the above structure, the power output of the lower input unit 1 has two modes: first gear and second gear. When switching to first gear, the power passes through the second intermediate shaft 31, the second rear gear 312, the fourth front gear 331, the fourth intermediate shaft 33, the fourth rear gear 332, the third front gear 321, the third intermediate shaft 32, and the third rear gear 322 to the planetary gear 43. When switching to second gear, the power passes through the second intermediate shaft 31, the second rear gear 312, the third intermediate shaft 32, and the third rear gear 322 to the planetary gear 43. The power of the upper input unit 1 is directly output to the planetary gear 43 via the first intermediate unit 2.

[0027] After the power is reduced again by the planetary gear 43, it drives the differential housing 44, which in turn drives the internal gear of the differential 44, and outputs power from the left half shaft 45 and the right half shaft 46.

[0028] 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 shaft composite planetary gear integrated electric drive bridge, characterized in that: It includes two input units, two intermediate units, and an output unit. Each input unit includes two motors, which are connected to the same intermediate unit. Each input unit is connected to one intermediate unit, and the two intermediate units are connected to the same output unit. One of the intermediate units is equipped with a shifting mechanism, and the output unit is equipped with an auxiliary motor.

2. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 1, characterized in that: The intermediate unit includes a first intermediate unit and a second intermediate unit, one end of which is connected to an input unit and the other end of which is connected to the same output unit. The second intermediate unit is provided with the shifting mechanism.

3. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 2, characterized in that: The first intermediate unit includes a first intermediate shaft, with its two ends connected to an input unit and an output unit, respectively.

4. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 3, characterized in that: The second intermediate unit includes a second intermediate shaft, a third intermediate shaft, and a fourth intermediate shaft. The third intermediate shaft is equipped with the shifting mechanism. The second intermediate shaft is connected to another input unit. The third intermediate shaft is connected to the output unit. The fourth intermediate shaft is connected to both the second intermediate shaft and the third intermediate shaft.

5. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 4, characterized in that: The second intermediate axis is coaxial with the third intermediate axis and parallel to the fourth intermediate axis and the first intermediate axis.

6. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 4 or 5, characterized in that: When the gear shifting mechanism is switched to first gear, the power of the input unit connected to the second intermediate unit is transmitted to the output unit in sequence through the second intermediate shaft, the fourth intermediate shaft, and the third intermediate shaft; when switched to second gear, the power is transmitted to the output unit in sequence through the second intermediate shaft and the third intermediate shaft.

7. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 4 or 5, characterized in that: The output unit includes planetary gears, the sun gear of which is connected to the first intermediate shaft and the third intermediate shaft, and the gear ring is fixed.

8. The four-motor, two-speed parallel shaft composite planetary gear integrated electric drive bridge according to claim 7, characterized in that: The output unit also includes a differential and two half-shafts connected to the differential, and the planet carrier of the planetary gear is connected to the housing of the differential.

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