Electromagnetic retarding dual-motor second-gear power uninterrupted driving integrated system

Abstract

The utility model relates to an electromagnetic retarding dual-motor second-gear power uninterrupted driving integrated system, which comprises a first motor, a first input shaft, a first constant mesh gear set, a first intermediate shaft and a first gear shifting set which are connected in sequence, the first normally engaged gear set is connected with the first gear shifting set through the first intermediate shaft. The second motor, the second input shaft, the second constant mesh gear set, the second intermediate shaft and the second gear shifting set are connected in sequence, the second motor is connected with the second constant mesh gear set through the second input shaft, and the second constant mesh gear set is connected with the second gear shifting set through the second intermediate shaft at the same time; an output gear and an output shaft are further included, the first gear shifting set and the second gear shifting set are both meshed with the output gear, and the output gear is connected to the output shaft in a sleeving mode and drives the output shaft to rotate. A plurality of gears connected with the first motor and the second motor respectively form two symmetrical modules, so that the maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to a drive integration system, specifically an electromagnetic slow-speed dual-motor two-speed uninterrupted power drive integration system. Background Technology

[0002] With increasing global environmental awareness and the advancement of "dual-carbon" goals, the market for new energy heavy-duty trucks is rapidly expanding. As the core component of the power system for new energy heavy-duty trucks, the performance of the central electric drive assembly directly impacts the overall efficiency and operating costs of the vehicle. While the currently mainstream integrated electric drive axle solution offers advantages in transmission efficiency and smoothness, there is still room for improvement under specific operating conditions. Therefore, developing a high-efficiency and reliable central electric drive assembly has become an urgent need for the industry. Utility Model Content

[0003] This invention addresses the problem of low efficiency in current drive assemblies by proposing an integrated electromagnetic slow-speed dual-motor two-speed uninterrupted power drive system, which is more modular, lighter, and easier to maintain.

[0004] The technical means adopted by this utility model to solve the above-mentioned problems is as follows: an integrated system for uninterrupted two-speed electromagnetic slow-speed dual-motor drive, comprising a first motor, a first input shaft, a first constant-mesh gear set, a first intermediate shaft, and a first shifting group connected in sequence. The first motor is connected to the first constant-mesh gear set via the first input shaft, and the first constant-mesh gear set is also connected to the first shifting group via the first intermediate shaft. The system also includes a second motor, a second input shaft, a second constant-mesh gear set, a second intermediate shaft, and a second shifting group connected in sequence. The second motor is connected to the second constant-mesh gear set via the second input shaft, and the second constant-mesh gear set is also connected to the second shifting group via the second intermediate shaft. Furthermore, the system includes an output gear and an output shaft. Both the first and second shifting groups mesh with the output gear, which is sleeved on the output shaft and drives the output shaft to rotate. The multiple gears connected to the first and second motors form two symmetrical modules, allowing for flexible and convenient adjustment and higher efficiency.

[0005] Furthermore, an electromagnetic retarder is also installed on the output shaft for better speed control.

[0006] Furthermore, the first shift group includes a first shift spline and a first low gear position and a first high gear position respectively disposed on both sides of the first shift spline. The first shift spline is connected to the first intermediate shaft, and the first low gear position and the first high gear position are both compound gears loosely fitted on the first intermediate shaft.

[0007] Furthermore, the first shift group also includes a compound gear set, with both the first low gear and the first high gear meshing with the compound gear set, and the first high gear also meshing with the output gear.

[0008] Furthermore, the first low gear includes a first low gear one and a first low gear two, and the compound gear set includes a compound large gear and a compound small gear. The first low gear one engages with the first shift spline, and the first low gear two meshes with the compound large gear.

[0009] Furthermore, the first high gear includes a first high gear one, a first high gear two, and a first high gear three. The first high gear one engages with the first shift spline, the first high gear two meshes with the compound pinion, and the first high gear three meshes with the output gear.

[0010] Furthermore, the second shift group includes a second shift spline and a second low gear and a second high gear respectively disposed on both sides of the second shift spline. The second shift spline is connected to the second intermediate shaft, and the second low gear and the second high gear are both compound gears loosely fitted on the second intermediate shaft.

[0011] Furthermore, the second shift group also includes a compound gear set, and the first shift group and the second shift group share a compound gear set that is loosely fitted on the output shaft. The second low gear and the second high gear both mesh with the compound gear set, and the second high gear also meshes with the output gear.

[0012] Furthermore, the second low gear includes a second low gear one and a second low gear two. The second low gear one engages with the second shift spline, and the second low gear two meshes with the compound large gear.

[0013] Furthermore, the second high gear includes a second high gear one, a second high gear two, and a second high gear three. The second high gear one engages with the second shift spline, the second high gear two meshes with the compound pinion, and the second high gear three meshes with the output gear.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model adopts a configuration of two input motors and a spatial arrangement of two intermediate shafts, which makes the gearbox structure simpler, improves the transmission efficiency of the gearbox, reduces energy waste, and thus has higher efficiency.

[0016] 2. The compact structural design of this utility model helps to reduce the use of materials, thereby reducing the overall weight, which is crucial for improving the fuel economy and performance of the mining truck; the compact design not only facilitates installation, but also simplifies daily maintenance and repair work, reducing operating costs; at the same time, due to its compact structure, the electric drive assembly system can operate stably in various harsh mining environments, demonstrating excellent environmental adaptability.

[0017] 3. The structure of this utility model is easy to modularize and produce, 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

[0018] Figure 1 This is a schematic diagram of the overall structure of the drive system in Embodiment 1;

[0019] Figure 2 This is a schematic diagram of the first gear shift group structure in Embodiment 1;

[0020] Figure 3 This is a schematic diagram of the second gear shift group structure in Embodiment 1;

[0021] Figure 4 This is a schematic diagram of the power transmission in one gear as shown in Example 1;

[0022] Figure 5 This is a schematic diagram of the power transmission in the second gear of the embodiment;

[0023] Figure 6 This is a schematic diagram of the overall structure of the drive system in Example 2;

[0024] In the diagram: 11. First motor, 12. First input shaft, 13. First constant mesh gear set, 14. First intermediate shaft, 100. First shift group, 101. First high gear, 1011. First high gear one, 1012. First high gear two, 1013. First high gear three, 102. First low gear, 1021. First low gear one, 1022. First low gear two, 103. First shift spline, 21. Second motor, 22. Second input shaft, 23. Second constant mesh gear set 24. Meshing gear; 200. Second intermediate shaft; 201. Second shift group; 201. Second high gear; 2011. Second high gear one; 2012. Second high gear two; 2013. Second high gear three; 202. Second low gear; 2021. Second low gear one; 2022. Second low gear two; 203. Second shift spline; 3. Output shaft; 31. Output gear; 32. Compound gear set; 321. Compound large gear; 322. Compound small gear; 4. Electromagnetic retarder. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only, representing schematic diagrams only, not actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Example 1

[0026] An integrated system for uninterrupted two-speed electromagnetic slow-moving dual-motor drive, such as... Figure 1As shown, the power is increased by two motors, the first motor 11 and the second motor 21. The power provided by the first motor 11 is coupled to the output gear 31 via the first shift group 100 and the power provided by the second motor 11 is coupled to the output gear 31 via the second shift group 200, and then output by the output shaft 3.

[0027] The power transmission structure of the first motor 11 includes: a first input shaft 12, a first constant mesh gear set 13, a first intermediate shaft 14, and a first shift group 100. The first input shaft 12 is connected to both the first motor 11 and the first constant mesh gear set 13. The first intermediate shaft 14 is connected to both the first constant mesh gear set 13 and the first shift group 100. The first shift group 100 meshes with the output gear 31. The output shaft 3 is connected to the output gear 31, transmitting the power of the first motor 11 to the output shaft 3.

[0028] like Figure 2 As shown, the first shift group 100 includes a first shift spline 103 connected to the first intermediate shaft 14, a first high gear position 101 and a first low gear position 102 respectively disposed on both sides of the first shift spline 103, and a compound gear group 32 that meshes with both the first high gear position 101 and the first low gear position 102. The first low gear 102 is a compound gear including a first low gear 1021 and a first low gear 2 1022. The first high gear 101 is a compound gear including a first high gear 1011, a first high gear 2 1012 and a first high gear 3 1013. The compound gears of the first low gear 102 and the first high gear 101 are loosely fitted on the first intermediate shaft 14. The compound gear set 32 ​​includes a compound large gear 321 and a compound small gear 322. The first low gear 1021 engages with the first shift spline 103. The first low gear 2 1022 meshes with the compound large gear 321. The first high gear 1011 engages with the first shift spline 103. The first high gear 2 1012 meshes with the compound small gear 322. The first high gear 3 1013 meshes with the output gear 31. The power of the first motor 11 is transmitted to the first high gear 101 and then directly to the output gear 31 for output. However, when the power of the first motor 11 is transmitted to the first low gear 102, it needs to pass through the compound gear set 32 ​​and then through the first high gear 101 before it can pass through the output gear 31 for output.

[0029] Accordingly, the power transmission structure of the second motor 21 includes: a second input shaft 22, a second constant mesh gear set 23, a second intermediate shaft 24, and a second shift group 200. The second input shaft 22 is connected to both the second motor 21 and the second constant mesh gear set 23. The second intermediate shaft 24 is connected to both the second constant mesh gear set 23 and the second shift group 200. The second shift group 200 meshes with the output gear 31. The output shaft 3 is connected to the output gear 31, transmitting the power of the second motor 21 to the output shaft 3.

[0030] like Figure 3 As shown, the second shift group 200 includes a second shift spline 203 connected to the second intermediate shaft 24, a second high gear position 201 and a second low gear position 202 respectively disposed on both sides of the second shift spline 203, and a compound gear set 32 ​​that meshes with both the second high gear position 201 and the second low gear position 202. This compound gear set 32 ​​is the same as the compound gear set 32 ​​of the first shift group 100, and the compound gear set 32 ​​is loosely fitted on the output shaft 3. The second low gear 202 is a compound gear consisting of a second low gear 1 2021 and a second low gear 2022. The second high gear 201 is a compound gear consisting of a second high gear 1 2011, a second high gear 2012, and a second high gear 3 2013. Both the second low gear 202 and the second high gear 201 are loosely fitted onto the second intermediate shaft 24. The second low gear 1 2021 engages with the second shift spline 203. The second low gear 2 2022 meshes with the compound large gear 321. The second high gear 1 2011 engages with the second shift spline 203. The second high gear 2 2012 meshes with the compound small gear 322. The second high gear 3 2013 meshes with the output gear 31. The power of the second motor 21 is transmitted to the second high gear 201 and then directly to the output gear 31 for output. However, when the power of the second motor 21 is transmitted to the second low gear 202, it needs to pass through the compound gear set 32 ​​and then through the second high gear 201 before it can pass through the output gear 31 for output.

[0031] like Figure 4 As shown, the power transmission process in the first gear is as follows: the power output by the first motor 11 is transmitted from the first input shaft 12 to the first constant mesh gear set 13, then to the first intermediate shaft 14, to the first shift spline 103, to the first low gear 102, to the compound gear set 32, to the first high gear 101, to the output gear 31, and finally to the output shaft 3. The power transmission process of the second motor 21 is similar.

[0032] like Figure 5 As shown, the power transmission process in the second gear is as follows: the power output by the first motor 11 is transmitted from the first input shaft 12 to the first constant mesh gear set 13, then to the first intermediate shaft 14, to the first shift spline 103, to the first high gear 101, to the output gear 31, and finally to the output shaft 3. The power transmission process of the second motor 21 is similar. Example 2

[0033] This embodiment is basically the same as the above embodiment, except that: the output shaft 3 of this embodiment is equipped with an electromagnetic retarder 4 to better adjust the output power and further improve the flexibility and efficiency of the system.

[0034] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the present invention, which should be defined by the claims.

Claims

1. An electromagnetic retardation dual-motor two-gear power non-interruption drive integrated system, characterized in that: The system includes a first motor, a first input shaft, a first constant mesh gear set, a first intermediate shaft, and a first shift group connected in sequence. The first motor is connected to the first constant mesh gear set via the first input shaft, and the first constant mesh gear set is also connected to the first shift group via the first intermediate shaft. The system also includes a second motor, a second input shaft, a second constant mesh gear set, a second intermediate shaft, and a second shift group connected in sequence. The second motor is connected to the second constant mesh gear set via the second input shaft, and the second constant mesh gear set is also connected to the second shift group via the second intermediate shaft. Finally, the system includes an output gear and an output shaft. Both the first and second shift groups mesh with the output gear, which is sleeved on the output shaft and drives the output shaft to rotate.

2. The electromagnetic retardation dual-motor two-gear power non-interruption drive integrated system according to claim 1, characterized in that: An electromagnetic retarder is also installed on the output shaft.

3. The electromagnetic retardation dual-motor two-gear power non-interruption drive integrated system according to claim 1, characterized in that: The first shift group includes a first shift spline and a first low gear and a first high gear located on both sides of the first shift spline. The first shift spline is connected to a first intermediate shaft. The first low gear and the first high gear are both compound gears loosely fitted on the first intermediate shaft.

4. The electromagnetic retarder dual-motor two-gear power uninterrupted drive integrated system according to claim 3, characterized in that: The first shift group also includes a compound gear set, with the first low gear and the first high gear both meshing with the compound gear set, and the first high gear also meshing with the output gear.

5. The electromagnetic retarder dual-motor two-gear power uninterrupted drive integrated system according to claim 4, characterized in that: The first low gear includes a first low gear one and a first low gear two. The compound gear set includes a compound large gear and a compound small gear. The first low gear one is engaged with the first shift spline, and the first low gear two is engaged with the compound large gear.

6. The electromagnetic retarder dual-motor two-gear power uninterruptible drive integrated system according to claim 5, characterized in that: The first high gear includes first high gear one, first high gear two, and first high gear three. First high gear one is engaged with the first shift spline, first high gear two is engaged with the compound pinion, and first high gear three is engaged with the output gear.

7. The electromagnetic retardation dual-motor two-gear power non-interruption drive integrated system according to claim 5, characterized in that: The second shift group includes a second shift spline and a second low gear and a second high gear located on both sides of the second shift spline. The second shift spline is connected to the second intermediate shaft. The second low gear and the second high gear are both compound gears that are loosely fitted on the second intermediate shaft.

8. The electromagnetic retardation dual-motor two-gear power non-interruption drive integrated system according to claim 7, characterized in that: The second shift group also includes a compound gear set, and the first shift group and the second shift group share a compound gear set that is loosely fitted on the output shaft. The second low gear and the second high gear both mesh with the compound gear set, and the second high gear also meshes with the output gear.

9. The electromagnetic retarder dual-motor two-gear power uninterruptible drive integrated system according to claim 8, characterized in that: The second low gear includes a second low gear one and a second low gear two. The second low gear one engages with the second shift spline, and the second low gear two meshes with the compound large gear.

10. The electromagnetic retarder dual-motor two-gear power uninterruptible drive integrated system of claim 8, wherein: The second high gear includes the second high gear one, the second high gear two, and the second high gear three. The second high gear one engages with the second shift spline, the second high gear two meshes with the compound pinion, and the second high gear three meshes with the output gear.

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