Parallel type power-interruption-free three-gear power coupling system

Abstract

The utility model discloses a parallel type power-interruption-free three-gear power coupling system, which belongs to the technical field of power systems and comprises an EM2 motor, an EM1 motor, an EM2 first-stage gear set and an EM2 second-stage gear set. An EM1 first-stage gear set, an EM1 second-stage gear set, a second-gear gear set, a planetary mechanism, a first-stage clutch, a second-stage clutch, an EM2 input shaft, an EM1 input shaft, an EM2 intermediate shaft, an EM1 intermediate shaft, a main shaft, a power takeoff and a transmission shell are included. According to the embodiment of the invention, the transmission efficiency of the system can be improved; the double-motor structure realizes gear shifting without power interruption, each motor can work independently or simultaneously, and the coupling modes are diversified; when the EM1 motor works independently, the EM2 motor is protected from being reversely dragged, and meanwhile the neutral gear power take-off function is achieved; the gear shifting safety of the whole vehicle in the uphill and downhill process is improved, the single-time cargo capacity and the running speed of the whole vehicle are improved, and the economic performance is remarkable; and different coupling modes are adopted under different gradients, so that the motor is always in a high-efficiency area, and the energy-saving performance is good.

Description

Technical Field

[0001] The present application belongs to the technical field of power systems, and in particular, relates to a parallel three-speed power coupling system without power interruption. Background Art

[0002] At present, with the increase of people's environmental awareness and the promotion and implementation of policies and regulations, the application of pure electric mining trucks is becoming more and more widespread. At present, pure electric transmissions are mainly based on shifting clutches. When shifting gears under large slope conditions, especially when going uphill with heavy loads, there will inevitably be a neutral state in the middle. At this time, the power of the whole vehicle is interrupted, and the output speed changes drastically, resulting in a significant gap between the input and output speeds, leading to shift failure and vehicle stop, which poses a great safety hazard; on the other hand, even if the shift is successful, it will cause a sense of frustration due to the unsmooth shifting, resulting in a poor user experience.

[0003] With the development of mining truck technology, mining trucks are required to not only pull more but also run faster. Driven by this market demand, the development of high-capacity and high-power mining trucks has become a trend, and the corresponding powertrains also need to keep up with the pace of the times.

[0004] Currently, most of the three-speed power systems on the market are: series dual motors plus dual intermediate shaft structure transmission; parallel dual motors + dual intermediate shaft structure transmission and series dual motors + three intermediate shaft structure transmission. However, these power systems have interrupted shifting power and the powertrain outputs torque, requiring the use of high and low speed motors in coordination, which makes the cost high and the manufacturing and assembly difficult. Utility Model Content

[0005] In order to solve the above-mentioned problems and technical defects, the embodiment of the present application adopts the following technical solution, a parallel type power interruption-free three-speed power coupling system, including an EM2 motor, an EM1 motor, an EM2 primary gear set, an EM2 secondary gear set, an EM1 primary gear set, an EM1 secondary gear set, a second-speed gear set, a planetary mechanism, a primary clutch, a secondary clutch, an EM2 input shaft, an EM1 input shaft, an EM2 intermediate shaft, an EM1 intermediate shaft, a main shaft, a power take-off and a transmission case.

[0006] Preferably, the EM2 primary gear set comprises a first gear and a second gear;

[0007] The EM2 secondary gear set includes a third gear and a fifth gear;

[0008] The EM1 primary gear set includes a seventh gear and an eighth gear;

[0009] The EM1 secondary gear set includes a sixth gear and a fifth gear;

[0010] The second gear set includes a fourth gear and a ninth gear;

[0011] The planetary mechanism comprises a planetary ring gear, a planet carrier, a planetary gear and a sun gear;

[0012] The primary clutch comprises an EM2 clutch sleeve and a second gear ring gear;

[0013] The secondary clutch comprises an engagement sleeve, a transition gear ring and a low-speed engagement gear ring.

[0014] Further, the EM2 input shaft is fixedly connected to the driving end of the EM2 motor, and the EM1 input shaft is fixedly connected to the driving end of the EM1 motor;

[0015] The first gear is fixedly connected to the EM2 input shaft, the eighth gear is fixedly connected to the EM1 input shaft, and the sixth gear and the seventh gear are fixedly connected to the EM1 intermediate shaft;

[0016] The third gear and the second gear are both mounted on the EM2 intermediate shaft through needle bearing support;

[0017] The second gear ring gear is connected to the EM2 intermediate shaft via a spline;

[0018] The fourth gear is fixedly connected to the EM2 intermediate shaft;

[0019] The EM2 engagement sleeve is loosely mounted on the EM2 intermediate shaft, and the EM2 engagement sleeve is fixedly connected to the second gear;

[0020] The fifth gear is fixedly connected to the main shaft;

[0021] The sun gear is connected to the main shaft via a spline;

[0022] The planetary gear is supported and mounted on the planetary carrier through a needle bearing;

[0023] The planetary ring gear is meshed with the planetary gear;

[0024] The engagement sleeve is fixedly connected to the planetary gear ring through the transition gear ring;

[0025] The low gear engagement ring gear is fixedly connected to the transmission housing;

[0026] The ninth gear is fixedly connected to the planet carrier.

[0027] Furthermore, the EM1 input shaft, the EM2 input shaft, the EM2 intermediate shaft, the EM1 intermediate shaft, the main shaft and the planetary carrier are fixedly mounted on the transmission housing via bearing supports, and the power take-off is fixedly mounted on the transmission housing via bolts.

[0028] Furthermore, an external spline is provided at the rear end of the EM2 input shaft, and a coupling sleeve matching the internal spline is provided in the power take-off.

[0029] Preferably, three gear systems are included, namely a low-speed gear system, a medium-speed gear system and a high-speed gear system.

[0030] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0031] The present application uses a front dual-input multi-stage and multi-gear transmission mechanism plus a planetary transmission mechanism to achieve a greater output torque, and the input end can be matched with a high-speed motor to improve the system transmission efficiency; the dual-motor structure realizes shifting without power interruption, and each motor can work independently or simultaneously, with various coupling modes; the shift clutch is installed in the secondary transmission shaft, and when the EM1 motor works alone, it protects the EM2 motor from being reversely dragged, and at the same time realizes the neutral power take-off function; the shifting safety of the whole vehicle during uphill and downhill operations is increased, the single cargo capacity and operating speed of the whole vehicle are improved, and the economic performance is significant; different coupling modes are adopted at different slopes, so that the motor is always in the high-efficiency zone, with good energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In the attached picture:

[0033] Figure 1 A schematic diagram of the structure of the power coupling system of an embodiment of the present application;

[0034] Figure 2 This is a schematic diagram of the power transmission route of mode 1 of the embodiment of the present application;

[0035] Figure 3 Schematic diagram of the power transmission routes of Mode 2 and Mode 5 of the embodiment of the present application;

[0036] Figure 4 Schematic diagram of the power transmission routes of Mode 3 and Mode 6 of the embodiment of the present application;

[0037] Figure 5 This is a schematic diagram of the power transmission route of mode 4 of the embodiment of the present application;

[0038] Figure 6 This is a schematic diagram of the power transmission route of mode 7 of the embodiment of the present application;

[0039] Figure 7 This is a schematic diagram of the power transmission route of mode eight of the embodiment of the present application;

[0040] Figure 8 This is a schematic diagram of the power transmission route of mode nine of the embodiment of the present application;

[0041] Fig. 9 This is a schematic diagram of the power transmission route of Mode 10 of the embodiment of the present application;

[0042] In the figure: 1. EM2 motor; 2. EM2 input shaft; 3. first gear; 4. second gear; 5. EM2 coupling sleeve; 6. third gear; 7. second gear ring; 8. EM2 intermediate shaft; 9. fourth gear; 10. fifth gear; 11. main shaft; 12. sixth gear; 13. EM1 intermediate shaft; 14. seventh gear; 15. eighth gear; 16. EM1 input shaft; 17. EM1 motor; 18. low gear coupling ring; 19. coupling sleeve; 20. transition ring; 21. planetary ring; 22. sun gear; 23. planetary gear; 24. planet carrier; 25. ninth gear; 26. power take-off; 27. transmission case. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Example 1

[0045] like Figure 1 As shown, a parallel three-speed power coupling system with no power interruption includes an EM2 motor 1, an EM1 motor 17, an EM2 primary gear set, an EM2 secondary gear set, an EM1 primary gear set, an EM1 secondary gear set, a second-speed gear set, a planetary mechanism, a primary clutch, a secondary clutch, an EM2 input shaft 2, an EM1 input shaft 16, an EM2 intermediate shaft 8, an EM1 intermediate shaft 13, a main shaft 11, a power take-off 26 and a transmission housing 27.

[0046] The EM2 primary gear set includes a first gear 3 and a second gear 4;

[0047] The EM2 secondary gear set includes a third gear 6 and a fifth gear 10;

[0048] The EM1 primary gear set includes a seventh gear 14 and an eighth gear 15;

[0049] The EM1 secondary gear set includes a sixth gear 12 and a fifth gear 10;

[0050] The second gear set includes a fourth gear 9 and a ninth gear 25;

[0051] The planetary mechanism includes a planetary ring gear 21, a planet carrier 24, a planetary gear 23 and a sun gear 22;

[0052] The first-stage clutch comprises an EM2 clutch sleeve 5 and a second-speed gear ring 7;

[0053] The secondary clutch comprises a clutch sleeve 19 , a transition gear ring 20 and a low-speed clutch gear ring 18 .

[0054] The EM2 input shaft 2 is fixedly connected to the driving end of the EM2 motor 1, and the EM1 input shaft 16 is fixedly connected to the driving end of the EM1 motor 17;

[0055] The first gear 3 is fixedly connected to the EM2 input shaft 2, the eighth gear 15 is fixedly connected to the EM1 input shaft 16, and the sixth gear 12 and the seventh gear 14 are fixedly connected to the EM1 intermediate shaft 13;

[0056] The third gear 6 and the second gear 4 are both mounted on the EM2 intermediate shaft 8 through needle bearing support;

[0057] The second gear ring gear 7 is connected to the EM2 intermediate shaft 8 via a spline;

[0058] The fourth gear 9 is fixedly connected to the EM2 intermediate shaft 8;

[0059] The EM2 engagement sleeve 5 is loosely sleeved on the EM2 intermediate shaft 8, and the EM2 engagement sleeve 5 is fixedly connected to the second gear 4;

[0060] The fifth gear 10 is fixedly connected to the main shaft 11;

[0061] The sun gear 22 is connected to the main shaft 11 via a spline;

[0062] The planetary gear 23 is supported and mounted on the planetary carrier 24 via a needle bearing;

[0063] The planetary ring gear 21 meshes with the planetary gear 23;

[0064] The coupling sleeve 19 is fixedly connected to the planetary gear ring 21 via the transition gear ring 20;

[0065] The low gear engagement ring gear 18 is fixedly connected to the transmission housing 27;

[0066] The ninth gear 25 is fixedly connected to the planet carrier 24 .

[0067] The EM1 input shaft 16 , the EM2 input shaft 2 , the EM2 intermediate shaft 8 , the EM1 intermediate shaft 13 , the main shaft 11 and the planetary carrier 24 are fixedly mounted on the transmission housing 27 via bearing supports, and the power take-off 26 is fixedly mounted on the transmission housing 27 via bolts.

[0068] An external spline is provided at the rear end of the EM2 input shaft 2, and a coupling sleeve matching the internal spline is provided inside the power take-off 26, and the power take-off 26 is engaged and disconnected by moving the coupling sleeve.

[0069] It includes three gear systems, namely low-speed gear system, medium-speed gear system and high-speed gear system.

[0070] Both the EM2 motor 1 and the EM1 motor 17 can work independently to output power, or the two motors can work simultaneously and output power after coupling. There are multiple power output modes. During use, different working modes can be selected independently according to the actual road conditions to ensure that the power or speed requirements of the vehicle are met.

[0071] The low-speed gear system uses the EM1 motor 17 as the main motor, providing speed and torque, while the EM2 motor 1 can selectively provide torque for coupling;

[0072] The medium speed gear system uses EM2 motor 1 as the main motor, providing speed and torque, while EM1 motor 17 can selectively provide torque for coupling provision;

[0073] The high-speed gear system uses the EM1 motor 17 as the main motor to provide speed and torque, while the EM2 motor 1 can selectively provide torque for coupling.

[0074] Example 2

[0075] like Figure 2 As shown, the EM1 motor 17 is working, the clutch sleeve 19 moves to the left and engages with the low-speed clutch ring gear 18, and the EM2 clutch sleeve 5 is in the middle position.

[0076] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and then outputs the power through the sun gear 22, the planetary gear 23, the planetary ring gear 21, and the planetary carrier 24.

[0077] At this time, it is single motor mode 1, that is, mode one.

[0078] Example 3

[0079] like Figure 3 As shown, the EM1 motor 17 works as the main motor, the EM2 motor 1 works as the auxiliary motor, the EM2 coupling sleeve 5 moves left, and the coupling sleeve 19 moves left.

[0080] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and the power input through the EM2 input shaft 2 is transmitted to the main shaft 11 through the first gear 3, the second gear 4, the EM2 clutch sleeve 5, the third gear 6, and the fifth gear 10, and then the power is coupled and output through the sun gear 22, the planetary gear 23, the planetary ring gear 21, and the planetary carrier 24.

[0081] This is the first gear of the dual-motor power coupling mode, that is, mode 2.

[0082] Example 4

[0083] like Figure 4 As shown, the EM1 motor 17 works as the main motor, the EM2 motor 1 works as the auxiliary motor, the EM2 coupling sleeve 5 moves right, and the coupling sleeve 19 moves left.

[0084] At this time, the power transmission route is as follows: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and then transmitted to the planetary carrier 24 through the sun gear 22, the planetary gear 23, and the planetary carrier 24 and the first gear 3, the second gear 4, the EM2 coupling sleeve 5, the second gear ring 7, the EM2 intermediate shaft 8, the fourth gear 9, and the ninth gear 25 input through the EM2 input shaft 2. The two powers are coupled at the planetary carrier and output in a unified manner.

[0085] This is the first gear of the dual-motor power coupling mode, that is, mode three.

[0086] Example 5

[0087] like Figure 5 As shown, the EM2 motor 1 is working, the EM2 coupling sleeve 5 moves rightward, the second gear ring gear 7 is engaged, and the coupling sleeve 19 is in the middle position.

[0088] At this time, the power transmission route is: the power input through the EM2 input shaft 2 is transmitted to the planetary carrier 24 through the first gear 3, the second gear 4, the EM2 clutch sleeve 5, the second gear ring 7, the EM2 intermediate shaft 8, the fourth gear 9, and the ninth gear 25, and is finally output by the planetary carrier 24.

[0089] At this time, it is single motor mode 2, that is, mode 4.

[0090] Example 6

[0091] like Figure 3 As shown, the EM2 motor 1 works as the main motor, the EM1 motor 17 works as the auxiliary motor, the EM2 coupling sleeve 5 moves left, and the coupling sleeve 19 moves left.

[0092] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and the power input through the EM2 input shaft 2 is transmitted to the main shaft 11 through the first gear 3, the second gear 4, the EM2 clutch sleeve 5, the third gear 6, and the fifth gear 10, and then the power is coupled and output through the sun gear 22, the planetary gear 23, the planetary ring gear 21, and the planetary carrier 24.

[0093] At this time, it is the dual-motor power coupling mode 2, that is, mode five.

[0094] Example 7

[0095] like Figure 4 As shown, the EM2 motor 1 works as the main motor, the EM1 motor 17 works as the auxiliary motor, the EM2 coupling sleeve 5 moves right, and the coupling sleeve 19 moves left.

[0096] At this time, the power transmission route is as follows: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and then transmitted to the planetary carrier 24 through the sun gear 22, the planetary gear 23, and the planetary carrier 24 and the first gear 3, the second gear 4, the EM2 coupling sleeve 5, the second gear ring 7, the EM2 intermediate shaft 8, the fourth gear 9, and the ninth gear 25 input through the EM2 input shaft 2. The two powers are coupled at the planetary carrier and output in a unified manner.

[0097] At this time, it is the second gear of the dual-motor power coupling mode, that is, mode six.

[0098] Example 8

[0099] like Figure 6 As shown, the EM1 motor 17 is working, the engagement sleeve 19 moves rightward and engages with the engagement ring gear on the planet carrier 24, and the EM2 engagement sleeve 5 is in the middle position.

[0100] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and then the output power is completed through the sun gear 22, the planetary gear 23, and the planetary carrier 24.

[0101] At this time, it is single motor mode 3, that is, mode seven.

[0102] Example 9

[0103] like Figure 7 As shown, the EM1 motor 17 works as the main motor, the EM2 motor 1 works as the auxiliary motor, the EM2 coupling sleeve 5 moves right, and the coupling sleeve 19 moves right.

[0104] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and then transmitted to the planetary carrier 24 through the sun gear 22, the planetary gear 23, and the planetary carrier 24, and the power input through the EM2 input shaft 2 is transmitted to the planetary carrier 24 through the first gear 3, the second gear 4, the EM2 coupling sleeve 5, the second gear ring 7, the EM2 intermediate shaft 8, the fourth gear 9, and the ninth gear 25. The two powers are coupled here and then output.

[0105] At this time, it is the third gear of the dual-motor power coupling mode, that is, mode eight.

[0106] Example 10

[0107] like Figure 8 As shown, the EM1 motor 17 works as the main motor, the EM2 motor 1 works as the auxiliary motor, the EM2 coupling sleeve 5 moves to the left, and the coupling sleeve 19 moves to the right.

[0108] At this time, the power transmission route is: the power input through the EM1 input shaft 16 is transmitted to the main shaft 11 through the eighth gear 15, the seventh gear 14, the EM1 intermediate shaft 13, the sixth gear 12, and the fifth gear 10, and the power input through the EM2 input shaft 2 is transmitted to the main shaft 11 through the first gear 3, the second gear 4, the EM2 clutch sleeve 5, the third gear 6, and the fifth gear 10, and then the power is coupled and output through the sun gear 22, the planetary gear 23, and the planetary carrier 24.

[0109] At this time, it is the third gear of the dual-motor power coupling mode, that is, mode nine.

[0110] Embodiment 11

[0111] like Fig. 9 As shown, the EM2 motor 1 is working, the EM2 coupling sleeve 5 is in the middle position, and the coupling sleeve 19 is in the middle position.

[0112] At this time, the power transmission route is: the power input through the EM2 input shaft 2 is directly transmitted to the power take-off 26 through the rear end spline, the power take-off works, and the whole vehicle has no power output, that is, mode ten.

[0113] The above embodiments only express the preferred implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A parallel three-speed power coupling system without power interruption, characterized in that: The invention comprises an EM2 motor (1), an EM1 motor (17), an EM2 primary gear set, an EM2 secondary gear set, an EM1 primary gear set, an EM1 secondary gear set, a second gear set, a planetary mechanism, a primary clutch, a secondary clutch, an EM2 input shaft (2), an EM1 input shaft (16), an EM2 intermediate shaft (8), an EM1 intermediate shaft (13), a main shaft (11), a power take-off (26) and a transmission housing (27).

2. A parallel type non-power interruption three-speed power coupling system according to claim 1, characterized in that: The EM2 primary gear set comprises a first gear (3) and a second gear (4); The EM2 secondary gear set comprises a third gear (6) and a fifth gear (10); The EM1 primary gear set comprises a seventh gear (14) and an eighth gear (15); The EM1 secondary gear set comprises a sixth gear (12) and a fifth gear (10); The second gear set comprises a fourth gear (9) and a ninth gear (25); The planetary mechanism comprises a planetary ring gear (21), a planet carrier (24), a planetary gear (23) and a sun gear (22); The primary clutch comprises an EM2 clutch sleeve (5) and a second gear ring gear (7); The secondary clutch comprises an engagement sleeve (19), a transition gear ring (20) and a low-speed engagement gear ring (18).

3. A parallel type non-power interruption three-speed power coupling system according to claim 2, characterized in that: The EM2 input shaft (2) is fixedly connected to the driving end of the EM2 motor (1), and the EM1 input shaft (16) is fixedly connected to the driving end of the EM1 motor (17); The first gear (3) is fixedly connected to the EM2 input shaft (2), the eighth gear (15) is fixedly connected to the EM1 input shaft (16), and the sixth gear (12) and the seventh gear (14) are fixedly connected to the EM1 intermediate shaft (13); The third gear (6) and the second gear (4) are both mounted on the EM2 intermediate shaft (8) via needle bearing supports; The second gear ring gear (7) is connected to the EM2 intermediate shaft (8) via a spline; The fourth gear (9) is fixedly connected to the EM2 intermediate shaft (8); The EM2 engagement sleeve (5) is loosely sleeved on the EM2 intermediate shaft (8), and the EM2 engagement sleeve (5) is fixedly connected to the second gear (4); The fifth gear (10) is fixedly connected to the main shaft (11); The sun gear (22) is connected to the main shaft (11) via a spline; The planetary gear (23) is supported and mounted on the planetary carrier (24) via a needle bearing; The planetary gear ring (21) meshes with the planetary gear (23); The engagement sleeve (19) is fixedly connected to the planetary gear ring (21) via the transition gear ring (20); The low gear engagement ring gear (18) is fixedly connected to the transmission housing (27); The ninth gear (25) is fixedly connected to the planet carrier (24).

4. A parallel type non-power interruption three-speed power coupling system according to claim 3, characterized in that: The EM1 input shaft (16), the EM2 input shaft (2), the EM2 intermediate shaft (8), the EM1 intermediate shaft (13), the main shaft (11) and the planetary carrier (24) are fixedly mounted on the transmission housing (27) via bearing supports, and the power take-off (26) is fixedly mounted on the transmission housing (27) via bolts.

5. A parallel type non-power interruption three-speed power coupling system according to claim 4, characterized in that: The rear end of the EM2 input shaft (2) is provided with an external spline, and the power take-off (26) is provided with an engagement sleeve matching the internal spline.

6. A parallel type non-power interruption three-speed power coupling system according to claim 1, characterized in that: It includes three gear systems, namely low-speed gear system, medium-speed gear system and high-speed gear system.

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