Multi-motor driving assembly system

Abstract

The utility model relates to a multi-motor drive assembly system, which comprises a plurality of groups of power output sources, the output ends of the power output sources are connected with input shaft components, a normally engaged shaft component is arranged between the adjacent input shaft components in the same group, and the normally engaged shaft component comprises a plurality of stages of compound gear shafts. The multi-stage compound gear shaft transmits torque to the middle shaft components on the two sides or the rear middle shaft component connected with the normally-meshed shaft component, output of the torque and the rotating speed under various working conditions is completed, and the requirement of the whole vehicle is met. According to the design of the transmission structure, the use requirements are fully considered, and the first gear specially provides strong power output for optimization of uphill and escape scenes; the second gear is suitable for daily driving, and it is ensured that the vehicle can run stably under various basic road conditions. By means of the arrangement, the gear shifting frequency in the driving process is reduced, and the safety and driving experience of the whole vehicle are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor drive technical field, more particularly, relate to a kind of multi-motor drive assembly system. BACKGROUND

[0002] Central electric drive assembly as the core part of new energy heavy truck power system, its performance directly affects the overall efficiency and operating cost of vehicle.‌Central electric drive assembly is the power assembly that drive motor and gearbox are integrated together, replace traditional engine and gearbox, but still need transmission shaft and traditional axle‌.In the arrangement form, central electric drive assembly is similar to traditional automobile power assembly. However, its transmission route is long, energy loss is large, system efficiency is low, and bottom space is largely occupied‌.

[0003] Search CN202410384811.X discloses a kind of drive assembly of vehicle, drive system of vehicle and vehicle, vehicle includes first wheel end, second wheel end, drive assembly includes: first motor, second motor, first motor, second motor is adapted to with first wheel end, second wheel end transmission connection;Fifth motor, fifth motor is connected with at least one of first motor, second motor;Engine, engine selectively with first wheel end and second wheel end transmission connection, and engine is also selectively with fifth motor transmission connection. Therefore, engine not only can drive fifth motor power generation, engine can directly drive first wheel end and second wheel end, so as to improve the energy utilization of drive assembly, it is advantageous to save energy, and also can guarantee the power performance of vehicle when battery is short of power.

[0004] But the above scheme is not suitable for electric drive assembly system of mine car, to cope with the urgent needs of modern mining to high-efficiency, environmentally-friendly mine car.

[0005] Therefore, it is necessary to provide a drive assembly system suitable for different working condition scenes of mine vehicle, to ensure that the vehicle can run smoothly in various basic road conditions. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of multi-motor drive assembly system for the deficiency of prior art, by using intermediate shaft, gearbox can more effectively distribute power from different motors, reduce energy loss, and improve transmission efficiency. Multi-gear design makes mine car maintain optimal performance under different loads and speeds.

[0007] The transmission structure design fully considers the use demand, 1st gear is optimized for uphill and escape scene, provides strong power output;2nd gear is suitable for daily driving, to ensure that the vehicle can run smoothly in various basic road conditions. This setting not only reduces the gear shifting frequency in the driving process, but also significantly improves the safety and driving experience of the whole vehicle.

[0008] The above-mentioned purposes of the utility model are realized by the following technical solutions.

[0009] Disclosed is a multi-motor drive assembly system, comprising multiple power output sources, an input shaft component connected to the output end of the power output source, a constant meshing shaft component arranged between input shaft components of the same group, the constant meshing shaft component comprising a multi-stage composite gear shaft, the multi-stage composite gear shaft transmitting torque to the intermediate shaft components on both sides or the rear intermediate shaft component connected to the constant meshing shaft component, completing the output of torque and rotational speed under multiple working conditions to meet the requirements of the whole vehicle.

[0010] The multi-motor drive assembly system of the utility model rationally arranges the power output source, the input shaft component, the constant meshing shaft component, the intermediate shaft component, the rear intermediate shaft component and the output shaft, so that the whole system can be simultaneously applied to uphill driving or daily driving through the adjustment of gears.

[0011] The multiple power output sources, i.e., the multi-motor configuration, provide powerful driving force, improve the flexibility and efficiency of the system and meet the requirements of heavy mine vehicles for driving force.

[0012] The power output source, the input shaft component, the constant meshing shaft component, the intermediate shaft component and the rear intermediate shaft component of the utility model are symmetrically arranged, can effectively distribute the driving force from different motors, reduce energy loss and improve transmission efficiency.

[0013] Further, the power output source comprises oppositely arranged motor one and motor two, the motor one and the motor two are respectively connected with input shaft one and input shaft two through splines; the input shaft one and the input shaft two are respectively engaged with constant meshing gear shaft one. The motor one and the motor two of the utility model are symmetrically arranged and simultaneously engaged with the constant meshing gear shaft one, i.e., the constant meshing gear shaft one is arranged between the two motors, so that the driving force can be effectively distributed.

[0014] Further, the output ends of the input shaft one and the input shaft two are respectively provided with intermediate shaft one and intermediate shaft two.

[0015] Further, the output end of the constant meshing gear shaft one is provided with rear intermediate shaft one, the rear intermediate shaft one comprises output driving tooth one and low-speed gear driving tooth one, and the output driving tooth one is fixedly connected with the spline of the rear intermediate shaft one.

[0016] Further, the power output source comprises relatively arranged motor three and motor four, the motor three and the motor four are connected with input shaft three and input shaft four through spline respectively; the input shaft three and the input shaft four are engaged with the always meshing gear shaft two respectively.

[0017] Further, the output end of the input shaft three and the input shaft four is provided with intermediate shaft three and intermediate shaft four respectively; the output end of the always meshing gear shaft two is provided with rear intermediate shaft two, and the rear intermediate shaft two comprises output driving tooth two and low speed gear driving tooth two, and the output driving tooth two is fixedly connected with the spline of the rear intermediate shaft two.

[0018] Further, the always meshing gear, high speed gear driving tooth and tooth sleeve with different module are sleeved on the always meshing gear shaft one and the always meshing gear shaft two, the always meshing gear is close to the power output source side, and the high speed gear driving tooth is far from the power output source side.

[0019] Further, the intermediate shaft one, the intermediate shaft two, the intermediate shaft three and the intermediate shaft four are all composite driving gear shafts, the high speed gear driving tooth is engaged with the high speed gear driving tooth, and the low speed gear driving tooth is engaged with the low speed gear driving tooth one and the low speed gear driving tooth two.

[0020] Another purpose of the utility model lies in the gear adjusting method of the above-mentioned multi-motor drive assembly system, the torque is respectively transmitted to the input shaft one and the input shaft two through the spline connection of motor one and motor two, the input shaft one and the input shaft two converge to the always meshing gear of the always meshing gear shaft one, the low speed gear driving tooth one of the engaging gear one is combined with the gear driving tooth on the rear intermediate shaft one, the power of the high speed gear driving tooth of the always meshing gear shaft one is shunted to the intermediate shaft one and the intermediate shaft two, the low speed gear driving tooth on the intermediate shaft component on both sides converges power again, is transmitted to the gear tooth on the rear intermediate shaft component, and the output driving tooth converges again to complete torque output.

[0021] Another purpose of the utility model lies in the gear adjusting method of the above-mentioned multi-motor drive assembly system, the torque is respectively transmitted to the input shaft one and the input shaft two through the spline connection of motor one and motor two, the input shaft one and the input shaft two converge to the always meshing gear of the always meshing gear shaft one, the low speed gear driving tooth one of the engaging gear one is combined with the gear driving tooth on the rear intermediate shaft one, the power of the high speed gear driving tooth of the always meshing gear shaft one is shunted to the intermediate shaft one and the intermediate shaft two, the low speed gear driving tooth on the intermediate shaft component on both sides converges power again, is transmitted to the gear tooth on the rear intermediate shaft component, and the output driving tooth converges again to complete torque output.

[0022] 2 gear variable speed design can select the most suitable gear according to different working conditions, and optimize power output.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model discloses a kind of multi-motor drive assembly system, the configuration of four motors and the design of double intermediate shafts jointly act, improve the overall efficiency of gearbox, reduce energy waste. By using two intermediate shafts, gearbox can more effectively distribute power from different motors, reduce energy loss, and improve transmission efficiency.

[0025] The utility model discloses a kind of multi-motor drive assembly system is configured in multiple motors to provide powerful, also improve the flexibility and efficiency of system, meet the demand of heavy mine car to power. The transmission structure design fully considers use demand, 1 gear is optimized for uphill and escape scene, provides strong power output;2nd gear is suitable for daily driving, ensure that vehicle can smoothly run under various basic road conditions. This setting not only reduces the gear shifting frequency in the process of driving, also significantly improves the safety and driving experience of whole vehicle. 2nd gear variable speed design can select the most suitable gear according to different working conditions, optimize power output.

[0026] The utility model compact structure, this electric drive assembly system can stably run in various harsh mine environments, show excellent environmental adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings accompanying the specification provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0028] Fig. 1 It is power transmission diagram of the multi-motor drive assembly system described in the utility model.

[0029] Fig. 2 It is the first gear power flow diagram of the power transmission of the multi-motor drive assembly system described in the utility model.

[0030] Fig. 3 It is the second gear power flow diagram of the power transmission of the multi-motor drive assembly system described in the utility model.

[0031] Wherein, 1-input shaft one, 2-input shaft two, 3-input shaft three, 4-input shaft four, 5-constant meshing shaft one, 6-constant meshing shaft two, 7-intermediate shaft one, 8-intermediate shaft two, 9-intermediate shaft three, 10-intermediate shaft four, 11-rear intermediate shaft one, 12-rear intermediate shaft two, 13-output shaft, 14-tooth sleeve, 15-output drive tooth one, 16-low speed gear drive tooth one, 17-output drive tooth two, 18-low speed gear drive tooth two, 19-constant meshing gear, 20-high speed gear drive tooth, 21-high speed gear driven tooth, 22-low speed gear driven tooth. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims. Example 1

[0033] like Figs. 1-3 As shown, the multi-motor drive assembly system in this embodiment enables shifting gears without interrupting power during driving and to meet the vehicle's power requirements. It includes a power output source, which in this embodiment consists of four motors arranged opposite each other with input shaft components (Input Shaft 1, Input Shaft 2, Input Shaft 3, and Input Shaft 4). The four motors are grouped in pairs: Motor 1 M1 and Motor 2 M2 form one group, and Motor 3 M3 and Motor 4 M4 form another group. Adjacent input shaft components within the same group are connected by constant meshing shaft components (Constant meshing gear shaft 1 5 and Constant meshing gear shaft 2 6). These constant meshing shaft components include multi-stage compound gear shafts that transmit torque to intermediate shaft components on both sides (Intermediate Shaft 1 7, Intermediate Shaft 2 8, Intermediate Shaft 3 9, and Intermediate Shaft 4 10), or to rear intermediate shaft components (Rear Intermediate Shaft 1 11 and Rear Intermediate Shaft 2 12) connected to the constant meshing shaft components, thus completing the output of torque and speed under various operating conditions to meet the vehicle's requirements.

[0034] In this embodiment, motor M1 and motor M2 are connected to input shaft 1 and input shaft 2 respectively via splines; input shaft 1 and input shaft 2 are respectively meshed with constant mesh gear shaft 5. Intermediate shaft 7 and intermediate shaft 8 are respectively provided at the output ends of input shaft 1 and input shaft 2.

[0035] In this embodiment, the output end of the constant mesh gear shaft 5 is provided with a rear intermediate shaft 11. The rear intermediate shaft 11 includes an output drive gear 15 and a low-speed drive gear 16. The output drive gear 15 is fixedly connected to the spline of the rear intermediate shaft 11.

[0036] In this embodiment, the power output source includes motor 3 M3 and motor 4 M4 arranged opposite to each other. Motor 3 M3 and motor 4 M4 are respectively connected to input shaft 3 and input shaft 4 via splines. Input shaft 3 and input shaft 4 are respectively meshed with constant mesh gear shaft 2 6.

[0037] The output ends of input shaft 3 and input shaft 4 are respectively provided with intermediate shaft 9 and intermediate shaft 10; the output end of constant mesh gear shaft 6 is provided with rear intermediate shaft 12, which includes output drive gear 17 and low speed drive gear 18, and the output drive gear 17 is fixedly connected to the spline of the rear intermediate shaft 12.

[0038] The constant mesh gear shaft one 5 and the constant mesh gear shaft two 6 are sleeved with constant mesh gears 19 and high-speed gear driving teeth 20 and tooth sleeves 14 with different module numbers, and the constant mesh gears are close to the power output source side, and the high-speed gear driving teeth are away from the power output source side.

[0039] The intermediate shaft one 7, the intermediate shaft two 8, the intermediate shaft three 9 and the intermediate shaft four 10 in the embodiment are all composite driving gear shafts, including high-speed gear driven teeth 21 meshing with high-speed gear driving teeth 20, and low-speed gear driven teeth 22 meshing with low-speed gear driving teeth one 16 and low-speed gear driving teeth two 18.

[0040] The intermediate shaft part adopts a double-tooth process, and the process design of the double-tooth gear is strict, which can ensure high tooth shape accuracy and is suitable for occasions with high accuracy requirements.

[0041] By using two intermediate shafts, the gearbox can more effectively distribute power from different motors, reduce energy loss, and improve transmission efficiency, achieving high-efficiency conversion.

[0042] The structure of the double-tooth gear is special, which can effectively reduce vibration and is suitable for occasions where mechanical vibration needs to be reduced. Due to its stable structure, the double-tooth gear has low noise during operation, making it suitable for occasions where noise control is required. The double-tooth gear can withstand a large amount of torque and load, making it suitable for occasions where high-load transmission is required.

[0043] The gear adjustment method of the multi-motor drive assembly system in the embodiment. In gear 1, for example on one side, motor one M1 and motor two M2 transmit torque to input shaft one 1 and input shaft two 2 through spline connection, and input shaft one 1 and input shaft two 2 converge to the constant mesh gear 19 of the constant mesh gear shaft one 5, which meshes with the low-speed gear driving teeth two 14 of the gear one 5 and the gear driving teeth on the rear intermediate shaft one 11, and the power of the high-speed gear driving teeth 20 of the constant mesh gear shaft one 5 is split to the intermediate shaft one 7 and the intermediate shaft two 8, and then converges again through the low-speed gear driven teeth 22 on the intermediate shaft parts on both sides to transmit power to the gear teeth on the rear intermediate shaft part; the other side is the same as above; the output driving teeth converge again to complete torque output.

[0044] In gear 2, for example on one side, motor one M1 and motor two M2 transmit torque to input shaft one 1 and input shaft two 2 through spline connection, and input shaft one 1 and input shaft two 2 converge to the constant mesh gear one 5, and when the tooth sleeve is hung in the high-speed gear driving teeth 20 of the constant mesh gear one 5, the torque is directly transmitted to the output driving teeth on the rear intermediate shaft one 11; the other side is the same as above, and the two sides converge to the output shaft 13.

[0045] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A multi-motor drive assembly system, characterized by, The application relates to a power output source comprising multiple groups of power output sources, the output ends of the power output sources being connected with input shaft components, a constant meshing shaft component being arranged between adjacent input shaft components of the same group, the constant meshing shaft component comprising a multiple-stage composite gear shaft which transmits torque to the intermediate shaft components on both sides or the rear intermediate shaft component connected with the constant meshing shaft component, so as to complete the output of torque and rotating speed under multiple working conditions and meet the requirements of the whole vehicle.

2. The multi-motor drive assembly system of claim 1, wherein, The power output source comprises oppositely arranged motor one and motor two, the motor one and the motor two are connected with input shaft one (1) and input shaft two (2) through splines respectively; the input shaft one (1) and the input shaft two (2) are meshingly connected with the constant meshing gear shaft one (5) respectively.

3. The multi-motor drive assembly system of claim 2, wherein, The output ends of the input shaft one (1) and the input shaft two (2) are respectively provided with the intermediate shaft one (7) and the intermediate shaft two (8).

4. The multi-motor drive assembly system of claim 3, wherein, The output end of the constant meshing gear shaft one (5) is provided with the rear intermediate shaft one (11), the rear intermediate shaft one (11) comprises output driving teeth one (15) and low-speed driving teeth one (16), and the output driving teeth one (15) is fixedly connected with the spline of the rear intermediate shaft one (11).

5. The multi-motor drive assembly system of any one of claims 2-4, wherein, The power output source further comprises oppositely arranged motor three and motor four, the motor three and the motor four are connected with input shaft three (3) and input shaft four (4) through splines respectively; the input shaft three (3) and the input shaft four (4) are meshingly connected with the constant meshing gear shaft two (6) respectively.

6. The multi-motor drive assembly system of claim 5, wherein, The output ends of the input shaft three (3) and the input shaft four (4) are respectively provided with the intermediate shaft three (9) and the intermediate shaft four (10); the output end of the constant meshing gear shaft two (6) is provided with the rear intermediate shaft two (12), the rear intermediate shaft two (12) comprises output driving teeth two (17) and low-speed driving teeth two (18), and the output driving teeth two (17) is fixedly connected with the spline of the rear intermediate shaft two (12).

7. The multi-motor drive assembly system of claim 6, wherein, The constant meshing gear (19), high-speed driving teeth (20) and tooth sleeve (14) with different module are sleeved on the constant meshing gear shaft one (5) and the constant meshing gear shaft two (6), the constant meshing gear (19) is close to the power output source side, and the high-speed driving teeth (20) are away from the power output source side.

8. The multi-motor drive assembly system of claim 7, wherein, The intermediate shaft one (7), the intermediate shaft two (8), the intermediate shaft three (9) and the intermediate shaft four (10) are all composite driving gear shafts, comprising high-speed driven teeth (21) meshing with the high-speed driving teeth (20), low-speed driven teeth (22) meshing with the low-speed driving teeth one (16) and the low-speed driving teeth two (18).

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