Dual-motor driving assembly system

Abstract

The utility model relates to a dual-motor drive assembly system which comprises output power sources arranged oppositely, and the output power sources drive a planetary gear mechanism to complete speed reduction adjustment. The planetary gear mechanism comprises a sun gear arranged in the center, compound planet gears are arranged on the two sides of the sun gear, the output ends of the compound planet gears are connected with the intermediate shaft, and the planetary gear mechanism transmits torque to the intermediate shaft; a plurality of groups of gear shifting mechanisms are arranged on the intermediate shaft, driving gears with different gears are arranged between the gear shifting mechanisms and the planetary gear mechanism or among the gear shifting mechanisms, the driving gears are meshed with corresponding driven gears, and the driven gears are mounted on the output shaft; the whole set of power output is completed by engaging different gear teeth and converging through the gear sleeve. And due to the multi-gear design, the mine car can keep the optimal performance under different loads and speeds.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor drive technical field more particularly, relate to a kind of double-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 terms of arrangement, 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.In the mining industry, traditional fuel mine truck cannot meet the requirements of modern society for green and environmental protection due to its high energy consumption and high pollution characteristics. Therefore, it is an urgent need of the industry to develop a high-efficiency and environmentally-friendly new energy mine truck.

[0003] After searching, CN202422704399.3 discloses a coaxial double-motor power split hybrid system structure. It comprises a wheel output shaft, an engine input shaft, a GM motor, a TM drive motor, a GM motor sun gear, a GM motor planetary gear, a TM motor sun gear, a TM motor planetary gear and a ring gear; the engine input shaft is connected to the GM motor planetary gear through a planetary carrier, one end of the GM motor planetary gear is engaged with the ring gear, the other end of the GM motor planetary gear is engaged with the GM motor sun gear, and the GM motor sun gear is connected to the GM motor through a GM motor shaft; the TM drive motor is connected to the TM motor sun gear through a TM motor shaft, one end of the TM motor sun gear is engaged with the TM motor planetary gear, and the other end of the TM motor planetary gear is engaged with the ring gear; and the ring gear is connected to the wheel output shaft.

[0004] CN202411189318.9 discloses a double-motor drive system and an engineering vehicle, the double-motor drive system comprising a first drive motor, a second drive motor and a gearbox with an integrated power take-off, the first drive motor output end connected to the gearbox input shaft, the gearbox output shaft connected to the axle through a transmission shaft, the power take-off output shaft connected to an oil pump, and the second drive motor coaxially connected to the first drive motor through a clutch mechanism; during on-board operation, the clutch mechanism separates the power of the two motors, and the first drive motor drives alone; during vehicle travel, the clutch mechanism connects the power of the two motors, and the two motors drive together.

[0005] The above-mentioned technology is not completely applicable to the mining industry. Therefore, it is of great significance to develop an electric drive assembly system for new energy wide-body mine trucks to meet the demand for efficient and environmentally-friendly mine trucks in modern mining. UTILITY MODEL CONTENT

[0006] The utility model discloses in view of prior art's insufficient, provide a kind of dual-motor drive assembly system, by using two intermediate shafts, gearbox can more effectively distribute power from different motor, reduce energy loss, and improve transmission efficiency.Multiple gear design makes mine car can maintain optimum performance under different load and speed.The electric drive assembly system will adopt the latest electric technology, with high efficiency, low energy consumption, zero emission and other advantages, can effectively reduce the operating cost of mine car, improve the environmental protection level of mining production.

[0007] In addition, the electric drive assembly system will also adopt advanced intelligent control technology, realize the automatic driving and remote monitoring of mine car, improve the safety and operating efficiency of mine car.

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

[0009] Disclose a kind of dual-motor drive assembly system, including the output power source of relative arrangement, the output power source drives planetary gear mechanism, completes speed reduction adjustment;

[0010] The planetary gear mechanism includes the sun gear of center setting, the two sides of the sun gear are provided with composite planetary gear, the output end of composite planetary gear is connected with intermediate shaft, and the planetary gear mechanism passes on torque to intermediate shaft;

[0011] Multiple gear shifting mechanisms are provided on the intermediate shaft, and the driving gears of different gears are provided between the gear shifting mechanisms and the planetary gear mechanism or between the gear shifting mechanisms, the driven gears corresponding to the driving gears are engaged, and the driven gears are installed on the output shaft;Different gear teeth and flow are hung in by gear sleeve, and the whole power output is completed.

[0012] The dual-motor drive assembly system of the utility model sets the whole system to be symmetrical design along output shaft, improves transmission efficiency by the drive of two side motors and the reasonable arrangement of planetary gear mechanism, gear shifting mechanism and driven gear, reduces energy loss, and realizes better power distribution and energy recovery by dual-motor input, improves overall energy efficiency.

[0013] Further, the sun gear of the planetary gear mechanism is installed on the input shaft of the output power source, and the sun gear includes oppositely arranged sun gear one and sun gear two.

[0014] Further, the two sides of the sun gear one and the sun gear two are engaged with composite planetary gear one and composite planetary gear two respectively;The composite planetary gear one and the composite planetary gear two are provided with high-speed driving teeth and low-speed driven gear.

[0015] Further, the low-speed driven gear is provided with a fixed gear ring outside, the fixed gear ring is an external gear, the composite planetary gear one and the composite planetary gear two are installed on the planet carrier one and the planet carrier two, and the planet gear rotates around the planet carrier and revolves around the fixed gear ring, so that the planet gear mechanism has different degrees of freedom.

[0016] Further, the external spline of the low-speed driven gear is engaged with the internal spline of the fixed gear ring.

[0017] Further, the intermediate shaft near the planet gear mechanism is provided with the third gear driving gear one and the third gear driving gear two, the third gear driving gear one and the third gear driving gear two are provided with the third gear driven gear, and the teeth of the third gear driven gear are engaged with the teeth of the third gear driving gear one and the third gear driving gear two.

[0018] Further, the output ends of the third gear driving gear one and the third gear driving gear two are respectively provided with the gear shifting mechanism one and the gear shifting mechanism two, the gear shifting mechanism one comprises a gear shifting sleeve one, a third gear position one, a neutral gear position one and a second gear position one, and the gear shifting mechanism two is the same as the gear shifting mechanism one.

[0019] Further, the intermediate shaft far from the planet gear mechanism is provided with the second gear driving gear one and the second gear driving gear two, the second gear driving gear one and the second gear driving gear two are provided with the second gear driven gear, and the teeth of the second gear driven gear are engaged with the teeth of the second gear driving gear one and the second gear driving gear two.

[0020] Further, the output ends of the second gear driving gear one and the second gear driving gear two are respectively connected with the first gear driving gear one and the first gear driving gear two, the output ends of the first gear driving gear one and the first gear driving gear two are respectively connected with the gear shifting mechanism three and the gear shifting mechanism four, the first gear driving gear one and the first gear driving gear two are provided with the first gear driven gear, and the teeth of the first gear driven gear are engaged with the teeth of the first gear driving gear one and the first gear driving gear two.

[0021] Further, the third gear driven gear, the second gear driven gear and the first gear driven gear are sequentially arranged on the output shaft, and the output shaft is arranged in parallel with the intermediate shaft.

[0022] The double-motor configuration can provide greater torque and power to meet the power requirements of heavy mine cars.

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

[0024] The double-motor drive assembly system of the utility model discloses, through the ingenious combination of planetary gear mechanism and intermediate shaft, the gearbox realizes the minimization of volume while keeping strong function, which provides greater space freedom for the whole vehicle design.

[0025] The double-motor drive assembly system of the utility model discloses has the advantages of ingenious design, high space utilization, compact structure design helps to reduce material use, thereby reducing overall weight, which is crucial for improving the fuel economy and performance of the mine car.

[0026] The double-motor drive assembly system of the utility model discloses has the advantages of easy-to-implement modular production, convenient for quick adjustment and customization according to different vehicle models and performance requirements, and greatly shortened product development cycle.

[0027] The double-motor drive assembly system of the utility model discloses has the advantages of compact design, convenient installation, simplified routine maintenance and repair work, and reduced operating costs.

[0028] The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings accompanying the specification integrated into this application serve to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0030] Figure 1 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0031] Figure 2 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability. Figure 1 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0032] Figure 3 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability. Figure 1 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0033] Figure 4 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0034] Figure 5 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0035] Figure 6 The double-motor drive assembly system of the utility model discloses has the advantages of compact structure, stable operation in various harsh mine environments, and excellent environmental adaptability.

[0036] Wherein, 1. sun gear one, 2. planet carrier one, 3. composite planetary gear one, 4. fixed gear ring one, 5. 3 gear driving gear one, 6. 2 gear driving tooth one, 7. 1 gear driving tooth one, 8. power takeoff, 9. 3 gear driven gear, 10. 2 gear driven tooth, 11. 1 gear driven tooth, 12. output shaft, 13. mechanical pump, 14. shift mechanism one, 141. shift tooth sleeve one, 142. 3 gear position one, 143. neutral gear position one, 144. 2 gear position one, 15. shift mechanism three, 151. shift tooth sleeve one, 152. 1 gear position one, 153. neutral gear tooth sleeve two, 17. bearing, 1'. sun gear two, 2'. planet carrier two, 3'. composite planetary gear two, 4'. fixed gear ring two, 5'. 3 gear driving gear two, 6. 2 gear driving tooth two, 7. 1 gear driving tooth two, 8. power takeoff, 14'. shift mechanism two, 15'. shift mechanism four. DETAILED DESCRIPTION

[0037] The embodiments of the utility model are explained in detail below in combination with the drawings, but the utility model can be implemented in many different ways limited and covered by the claims. Embodiment 1

[0038] As Figures 1-3 Indicated, the dual-motor drive assembly system of the embodiment, including the output power source of relative arrangement, the output power source in the embodiment is the motor M1 and motor M2 of symmetrical arrangement, motor M1 and motor M2 are connected input shaft respectively, and the one end of input shaft is connected motor, and the other end drives planetary gear mechanism, and completes speed reduction adjustment.

[0039] In the embodiment, motor M1 and motor M2 are connected planetary gear mechanism through input shaft respectively. Wherein motor M1 is fixedly connected with sun gear one 1, and the both sides of sun gear one 1 are provided with composite planetary gear one 3, and composite planetary gear one 3 is provided with first high-speed driving tooth and first low-speed driven gear. The outer side of first low-speed driven gear is provided with fixed gear ring one 4, and fixed gear ring one 4 is external gear, and composite planetary gear one 3 is installed on planet carrier one 2, and composite planetary gear one 3 is in rotational motion on planet carrier one 2 and in orbital motion on fixed gear ring one 4, so that planetary gear mechanism has different degrees of freedom. The outer spline of first low-speed driven gear is engaged with the inner spline of fixed gear ring one 4.

[0040] Correspondingly, motor M2 is fixedly connected with sun gear two 1', and the both sides of sun gear two 1' are provided with composite planetary gear two 3', and composite planetary gear two 3' is provided with second high-speed driving tooth and second low-speed driven gear. The outer side of second low-speed driven gear is provided with fixed gear ring two 4', and fixed gear ring two 4' is external gear, and fixed gear ring one 4 and fixed gear ring two 4' are installed to the gearbox housing.

[0041] The composite planetary gear wheel two 3' is installed on the planetary carrier two 2', and the composite planetary gear wheel two 3' rotates on the planetary carrier two 2' and revolves on the fixed gear ring two 4' to make the planetary gear mechanism have different degrees of freedom. The outer spline of the second low-speed driven gear is engaged with the inner spline of the fixed gear ring two 4'.

[0042] And, the 3rd gear driving gear one 5 and the 3rd gear driving gear two 5' are installed on the intermediate shaft near the planetary gear mechanism one side; the 3rd gear driven gear 9 is arranged between the 3rd gear driving gear one 5 and the 3rd gear driving gear two 5', and the teeth of the 3rd gear driven gear 9 are engaged with the teeth of the 3rd gear driving gear one 5 and the 3rd gear driving gear two 5' at the same time.

[0043] More specifically, the output ends of the 3rd gear driving gear one 5 and the 3rd gear driving gear two 5' are respectively installed with the gear shifting mechanism one 14 and the gear shifting mechanism two 14'; the gear shifting mechanism one 14 includes the gear shifting sleeve one 141, the 3rd gear position one 142, the neutral gear position one 143 and the 2nd gear position one 144; the gear shifting mechanism two 14' has the same structure as the gear shifting mechanism one 14.

[0044] The 2nd gear driving gear one 6 and the 2nd gear driving gear two 6' are installed on the intermediate shaft away from the planetary gear mechanism one side; the 2nd gear driven gear 10 is arranged between the 2nd gear driving gear one 6 and the 2nd gear driving gear two 6', and the teeth of the 2nd gear driven gear 10 are engaged with the teeth of the 2nd gear driving gear one 6 and the 2nd gear driving gear two 6' at the same time.

[0045] The output ends of the 2nd gear driving gear one 6 and the 2nd gear driving gear two 6' are respectively connected with the 1st gear driving tooth one 7 and the 1st gear driving tooth two 7'; the output ends of the 1st gear driving tooth one 7 and the 1st gear driving tooth two 7' are respectively connected with the gear shifting mechanism three 15 and the gear shifting mechanism four 15'; the gear shifting mechanism three 15 includes the gear shifting sleeve one 151, the 1st gear position one 152 and the neutral gear sleeve two 153 in this embodiment; the gear shifting mechanism four 15' has the same structure as the gear shifting mechanism three 15. The 1st gear driven gear 11 is arranged between the 1st gear driving tooth one 7 and the 1st gear driving tooth two 7', and the teeth of the 1st gear driven gear 11 are engaged with the teeth of the 1st gear driving tooth one 7 and the 1st gear driving tooth two 7' at the same time.

[0046] The 3rd gear driven gear 9, the 2nd gear driven gear 10 and the 1st gear driven gear 11 are sequentially arranged on the output shaft 12; the output shaft 12 is arranged in parallel with the intermediate shaft.

[0047] And the power take-off 8 and the mechanical pump 13 are also respectively arranged at the end of the intermediate shaft, and the power take-off 8 and the mechanical pump 13 are driven members.

[0048] As Figures 4-6As shown, the transmission structure is designed for 1 gear for uphill and escape scene optimization, providing strong power output; 2 gears are suitable for daily driving, ensuring that the vehicle can run smoothly under various basic road conditions; 3 gears are used for overtaking. This setting not only reduces the frequency of shifting during driving, but also significantly improves the safety and driving experience of the whole vehicle.

[0049] The gear adjustment method of the power transmission of the dual-motor drive assembly system is that the motor M1 inputs torque to the sun gear 1, completes 2-stage speed reduction through the composite planetary gear 3, the planet carrier 2 is linked with the intermediate shaft through spline, and the torque is transmitted to the intermediate shaft (the power is interrupted when the mechanical pump 13 and the power take-off device 8 on both sides do not exist), and different gear teeth are hung in through the tooth sleeve and merged, completing the whole power output.

[0050] Specifically, when 1 gear, the 1 gear teeth in the shift mechanism three 15 and the shift mechanism four 15' play a role, the output power sources on both sides drive the sun gear 1 and the sun gear 2', the sun gear 1 and the sun gear 2' drive the composite planetary gear 3 and the composite planetary gear 3', and the power is output by the two side planet carriers (the planet carrier 2 and the planet carrier 2') to drive the intermediate shaft to rotate; then the power is output to the shift mechanism three 15 and the shift mechanism four 15'; the 1st driving gear 1 and the 1st driving gear 2' jointly act on the 1st driven gear 11, and the power is output through the output shaft 12.

[0051] When 2 gears, the 2 gear teeth in the shift mechanism one 14 and the shift mechanism two 14' play a role, the output power sources on both sides drive the sun gear 1 and the sun gear 2', the sun gear 1 and the sun gear 2' drive the composite planetary gear 3 and the composite planetary gear 3', and the power is output by the two side planet carriers (the planet carrier 2 and the planet carrier 2') to drive the intermediate shaft to rotate; then the power is output to the shift mechanism one 14 and the shift mechanism two 14'; the 2nd driving gear 1 and the 2nd driving gear 2' jointly act on the 2nd driven gear 10, and the power is output through the output shaft 12.

[0052] When 3 gears, the 3 gear teeth in the shift mechanism one 14 and the shift mechanism two 14' play a role, the output power sources on both sides drive the sun gear 1 and the sun gear 2', the sun gear 1 and the sun gear 2' drive the composite planetary gear 3 and the composite planetary gear 3', and the power is output by the two side planet carriers (the planet carrier 2 and the planet carrier 2') to drive the intermediate shaft to rotate; then the power is output to the shift mechanism one 14 and the shift mechanism two 14'; the 3rd driving gear 1 and the 3rd driving gear 2' jointly act on the 3rd driven gear 9, and the power is output through the output shaft 12.

[0053] 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 dual electric motor drive assembly system, characterized by, The output power source is arranged oppositely, and drives a planetary gear mechanism to complete speed reduction and adjustment; The planetary gear mechanism comprises a sun gear arranged at the center, and composite planetary gears are arranged on both sides of the sun gear, and the output ends of the composite planetary gears are connected with an intermediate shaft, and the planetary gear mechanism transmits torque to the intermediate shaft; A plurality of shift mechanisms are arranged on the intermediate shaft, and driving gears of different gears are arranged between the shift mechanisms and the planetary gear mechanism or between the shift mechanisms, and the driving gears are engaged with corresponding driven gears, and the driven gears are installed on an output shaft; different gear teeth are hung in different gears through a gear sleeve, and the power output is completed.

2. The dual motor drive assembly system of claim 1, wherein, The sun gear of the planetary gear mechanism is installed on an input shaft of the output power source, and the sun gear comprises oppositely arranged sun gear one (1) and sun gear two (1').

3. The dual motor drive assembly system of claim 2, wherein, The sun gear one (1) and the sun gear two (1') are respectively engaged with the composite planetary gear one (3) and the composite planetary gear two (3') on both sides; the composite planetary gear one (3) and the composite planetary gear two (3') are both provided with high-speed driving gears and low-speed driven gears.

4. The dual motor drive assembly system of claim 3, wherein, The outer side of the low-speed driven gear is provided with a fixed gear ring, the fixed gear ring is an external gear, the composite planetary gear one (3) and the composite planetary gear two (3') are installed on the planetary carrier one (2) and the planetary carrier two (2'), and the planetary gear rotates on the planetary carrier and revolves on the fixed gear ring to make the planetary gear mechanism have different degrees of freedom.

5. The dual motor drive assembly system of claim 4, wherein, The outer spline of the low-speed driven gear is engaged with the inner spline of the fixed gear ring.

6. The dual motor drive assembly system of claim 5, wherein, The intermediate shaft close to one side of the planetary gear mechanism is installed with a 3rd gear driving gear one (5) and a 3rd gear driving gear two (5'); a 3rd gear driven gear (9) is arranged between the 3rd gear driving gear one (5) and the 3rd gear driving gear two (5'), and the teeth of the 3rd gear driven gear (9) simultaneously engage the teeth of the 3rd gear driving gear one (5) and the 3rd gear driving gear two (5').

7. The dual motor drive assembly system of claim 6, wherein, The output ends of the 3rd gear driving gear one (5) and the 3rd gear driving gear two (5') are respectively installed with a shift mechanism one (14) and a shift mechanism two (14'); the shift mechanism one (14) comprises a shift gear sleeve one (141), a 3rd gear position one (142), a neutral gear position one (143) and a 2nd gear position one (144); the shift mechanism two (14') is the same as the shift mechanism one (14).

8. The dual motor drive assembly system of claim 7, wherein, The intermediate shaft away from one side of the planetary gear mechanism is installed with a 2nd gear driving gear one (6) and a 2nd gear driving gear two (6'); a 2nd gear driven gear (10) is arranged between the 2nd gear driving gear one (6) and the 2nd gear driving gear two (6'), and the teeth of the 2nd gear driven gear (10) simultaneously engage the teeth of the 2nd gear driving gear one (6) and the 2nd gear driving gear two (6').

9. The dual motor drive assembly system of claim 8, wherein, The output ends of the first gear driving gear (6) and the second gear driving gear (6') are respectively connected with the first gear driving tooth one (7) and the first gear driving tooth two (7'); the output ends of the first gear driving tooth one (7) and the first gear driving tooth two (7') are respectively connected with the gear shifting mechanism three (15) and the gear shifting mechanism four (15'); the first gear driving tooth one (7) and the first gear driving tooth two (7') are provided with the first gear driven gear (11) therebetween, and the gear teeth of the first gear driven gear (11) are engaged with the gear teeth of the first gear driving tooth one (7) and the first gear driving tooth two (7').

10. The dual motor drive assembly system of claim 9, wherein, The third gear driven gear (9), the second gear driven gear (10) and the first gear driven gear (11) are sequentially arranged on the output shaft (12); and the output shaft (12) is arranged in parallel with the intermediate shaft.

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