Four-motor two-gear parallel shaft reducer integrated electric drive bridge

Abstract

The utility model provides a kind of four motor two gear parallel shaft reducer integrated electric drive bridge.The four motor two gear parallel shaft reducer integrated electric drive bridge includes input unit, intermediate unit and output unit connected in turn, the output unit is connected with two intermediate units, each intermediate unit is connected with two input units, 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 reducer 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 an integrated electric drive bridge with a four-motor two-speed parallel shaft reducer. 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 utility model provides an integrated electric drive axle with a four-motor, two-speed parallel shaft reducer, which solves the aforementioned problem.

[0004] An integrated electric drive bridge with a four-motor two-speed parallel shaft reducer includes an input unit, an intermediate unit, and an output unit connected in sequence. The output unit is connected to two intermediate units simultaneously, and each intermediate unit is connected to two input units simultaneously. The intermediate unit is provided with a shifting mechanism, and the output unit is provided with an auxiliary motor.

[0005] In a preferred embodiment of the four-motor two-speed parallel shaft reducer integrated electric drive bridge provided by this utility model, the input unit includes a motor, and a motor large gear and a motor small gear fixedly disposed at the end of the motor shaft. The intermediate unit includes an intermediate shaft, and transmission gears fixedly disposed on the intermediate shaft, and intermediate large gears and intermediate small gears rotatably disposed on the intermediate shaft.

[0006] In a preferred embodiment of the four-motor two-speed parallel shaft reducer integrated electric drive bridge provided by this utility model, the shifting mechanism is provided between the intermediate large tooth and the intermediate small tooth on the intermediate shaft, and the shifting mechanism connects the intermediate large tooth to the intermediate shaft or the intermediate small tooth to the intermediate shaft.

[0007] In a preferred embodiment of the four-motor two-speed parallel shaft reducer integrated electric drive bridge provided by this utility model, the output unit includes an output shaft, output teeth fixedly disposed on the output shaft, a differential connected to the output shaft, and a half-shaft connected to the differential. The output unit also includes an output planetary gear set, the sun gear of which is connected to the output shaft, and the planet carrier which is connected to the differential.

[0008] The output tooth simultaneously engages with the transmission teeth of the two intermediate units, the large intermediate tooth simultaneously engages with the small motor teeth of the two input units, and the small intermediate tooth simultaneously engages with the large motor teeth of the two input units.

[0009] Compared with existing technologies, the four-motor two-speed parallel shaft reducer 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 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.

[0011] 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.

[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 reducer integrated electric drive bridge.

[0016] The following are the numbered components in the diagram: Motor 11, Motor large gear 12, Motor small gear 13, Intermediate shaft 21, Transmission gear 22, Intermediate small gear 23, Intermediate large gear 24, Output shaft 31, Output gear 32, Output planetary gear set 33, Differential 34, Left half shaft 35, Right half shaft 36, Auxiliary motor 4. 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 integrated electric drive bridge with a four-motor two-speed parallel shaft reducer provided by this utility model.

[0019] The four-motor, two-speed parallel shaft reducer integrated electric drive bridge includes four input units, two intermediate units, and one output unit.

[0020] The input unit includes a motor 11, and a motor large tooth 12 and a motor small tooth 13 fixedly mounted on the end of the motor 11 shaft.

[0021] The intermediate unit includes an intermediate shaft 21, a transmission gear 22 fixedly mounted on the intermediate shaft 21, and intermediate small gears 23 and intermediate large gears 24 rotatably mounted on the intermediate shaft 21. The intermediate large gear 24 in the same intermediate unit simultaneously meshes with the motor small gears 13 in both input units; the intermediate small gear 23 in the same intermediate unit simultaneously meshes with the motor large gears 12 in the same two input units. That is, the power from the two input units converges at the same intermediate unit.

[0022] A shifting mechanism 26 is provided on the intermediate shaft 21 between the intermediate large gear 24 and the intermediate small gear 23. The shifting mechanism 26 switches gears, connecting the intermediate large gear 24 to the intermediate shaft 21, or connecting the intermediate small gear 23 to the intermediate shaft 21. That is, the power of the two input units is transmitted to the intermediate shaft 21 from the intermediate large gear 24 or the intermediate small gear 23 based on the shifting mechanism 26.

[0023] The output unit includes an output shaft 31, an output gear 32, an output planetary gear set 33, a differential 34, a left half-shaft 35, and a right half-shaft 36. The right end of the output shaft 31 has an output gear 32 that meshes with the transmission gear 22 located at the left end of the intermediate shaft 21, receiving power transmitted to the intermediate shaft 21. The diameter of the transmission gear 22 is smaller than that of the small intermediate gear 23, and the diameter of the output gear 32 is larger than that of the large intermediate gear 24.

[0024] The left end of the output shaft is connected to the sun gear of the output planetary gear set 33. The planet carrier of the output planetary gear set 33 faces left and is connected to the housing of the differential 34. The differential 34 continues to distribute power to the left half-shaft 35 and the right half-shaft 36, and outputs it to the wheels on both sides.

[0025] The auxiliary motor 4 is connected to both the left half-shaft 35 and the right half-shaft 36, assisting in braking or providing power. For ease of illustration, the attached diagram shows only the right half-shaft 36 connected.

[0026] 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 reducer integrated electric drive bridge, characterized in that: It includes an input unit, an intermediate unit, and an output unit connected in sequence. The output unit is connected to two intermediate units at the same time. Each intermediate unit is connected to two input units at the same time. The intermediate unit is equipped with a shifting mechanism. The output unit is equipped with an auxiliary motor.

2. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 1, characterized in that: The input unit includes a motor, and a large motor tooth and a small motor tooth fixedly mounted on the end of the motor shaft.

3. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 2, characterized in that: The intermediate unit includes an intermediate shaft, transmission teeth fixedly disposed on the intermediate shaft, and a large intermediate tooth and a small intermediate tooth rotatably disposed on the intermediate shaft.

4. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 3, characterized in that: The shifting mechanism is provided between the intermediate large tooth and the intermediate small tooth on the intermediate shaft, and the shifting mechanism connects the intermediate large tooth to the intermediate shaft or the intermediate small tooth to the intermediate shaft.

5. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 4, characterized in that: The output unit includes an output shaft, output teeth fixedly mounted on the output shaft, a differential connected to the output shaft, and a half-shaft connected to the differential.

6. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 5, characterized in that: The output unit also includes an output planetary gear set, the sun gear of which is connected to the output shaft, and the planet carrier is connected to the differential.

7. The four-motor two-speed parallel shaft reducer integrated electric drive bridge according to claim 6, characterized in that: The output tooth simultaneously engages with the transmission teeth of the two intermediate units, the large intermediate tooth simultaneously engages with the small motor teeth of the two input units, and the small intermediate tooth simultaneously engages with the large motor teeth of the two input units.

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