CN110486425A - Double-motor power shaft system arrangement structure and the speed changer for using the structure - Google Patents

Abstract

The arrangement structure of the dual-motor power shaft system disclosed by the present invention and the transmission adopting the structure arrange the second electric power intervening gear on the intermediate shaft of the first electric power module, which reduces the axial dimension of the motor arrangement and reduces the number of motor intervening gears. Deputy, improve the transmission efficiency of the transmission and reduce the cost. The first gear of the intermediate shaft and the second electric power intervening gear are respectively arranged at the two ends of the intermediate shaft, which avoids the arrangement of the first gear of the intermediate shaft and the second electric power intervening gear next to the bearing on the same side. Risk of reduced lifespan. In this way, the load distribution on the entire intermediate shaft is balanced, and the service life of the intermediate shaft and bearings is improved.

Description

Arrangement structure of dual-motor power shaft system and transmission adopting this structure

technical field

The invention relates to the field of transmissions, in particular to a dual-motor power shaft arrangement structure and a transmission adopting the structure.

Background technique

With the rapid development of the automobile industry, the number of automobiles in the market is growing rapidly. Traditional fuel vehicles are powered by non-renewable energy (such as oil), which poses a challenge to energy consumption. Under the dual pressure of the environment and energy, the country has put forward higher requirements on vehicle emissions, and the development of new energy vehicles is imperative. Hybrid vehicles just become the stage product of the transition from traditional fuel vehicles to new energy vehicles. The intervention of the motor is basically by inserting the intermediate gear to achieve power transmission, but the space in the engine room of the car is limited, and the power arrangement of the hybrid system has become a difficult problem.

Contents of the invention

The invention discloses a double-motor power shaft system layout structure. The motor intervening gear is arranged on the intermediate shaft of the first electric power module, which reduces the axial dimension of the motor arrangement, reduces the motor intervening in the gear pair, improves the transmission efficiency of the transmission, and reduces the cost.

The invention also discloses a transmission adopting the dual-motor power shaft arrangement structure, which reduces the axial dimension of the motor arrangement, reduces the motor intervening in the gear pair, improves the transmission efficiency of the transmission, and reduces the cost.

The dual-motor power shaft arrangement structure disclosed in the present invention includes:

The first electric power module, the first electric power input shaft, the gear gear of the input shaft, the intermediate shaft, the gear gear of the intermediate shaft, the constant meshing gear of the intermediate shaft; the gear gear of the input shaft is fixed on the first electric power input shaft , the idle gear of the intermediate shaft gear is arranged on the intermediate shaft, and the constant meshing gear of the intermediate shaft is fixed on the intermediate shaft;

The second electric power module, the second electric power output shaft gear, the second electric power intermediate shaft, the second electric power intermediate gear, and the second electric power intervening gear; the second electric power intermediate gear is fixed on the second electric power intermediate on the shaft; the second electric power intervention gear is fixedly arranged on the intermediate shaft and arranged side by side with the constant meshing gear of the intermediate shaft;

Differential main reduction gear and differential;

The power of the first electric power module is transmitted to the differential through the input shaft gear gear on the first electric power input shaft, the intermediate shaft gear gear on the intermediate shaft, the intermediate shaft constant mesh gear, and the differential final reduction gear;

The power of the second electric power module passes through the second electric power output shaft gear, the second electric power intermediate gear on the second electric power intermediate shaft, the second electric power intervening gear, the intermediate shaft constant mesh gear, and the differential final reduction gear Incoming differential.

Further, the gears of the input shaft include: the first gear of the input shaft, the fourth gear of the input shaft, the third gear of the input shaft and the second gear of the input shaft; the first gear of the input shaft, the first gear of the input shaft, Input shaft fourth gear, input shaft third gear and input shaft second gear.

Further, the countershaft gears include: countershaft 1st gear, first synchronizer, countershaft 4th gear, countershaft 3rd gear, second synchronizer and countershaft 2nd gear; Shaft 1st gear, 1st synchronizer, countershaft 4th gear, countershaft 3rd gear, 2nd synchronizer and countershaft 2nd gear; input shaft 1st gear meshes with countershaft 1st gear; input shaft 4th gear The gear meshes with the fourth gear of the intermediate shaft; the third gear of the input shaft meshes with the third gear of the intermediate shaft; the second gear of the input shaft meshes with the second gear of the intermediate shaft; the first gear of the intermediate shaft, the fourth gear of the intermediate shaft, and the third gear of the intermediate shaft The first gear and the intermediate shaft second gear are idle on the intermediate shaft, the first synchronizer switches between the intermediate shaft first gear and the intermediate shaft fourth gear, and the second synchronization is between the intermediate shaft third gear and the intermediate shaft second gear switch between.

Further, the intermediate shaft first speed gear and the second electric power intervening gear are respectively arranged at two ends of the intermediate shaft.

Further, the second electric power module is a second power motor.

Further, the first electric power module is a first power motor.

The invention also discloses a transmission adopting the double-motor power shaft arrangement structure.

Beneficial technical effect of the present invention is:

1) The second electric power intervening gear is inserted behind the constant meshing teeth of the intermediate shaft, which increases the axial layout space of the second electric power module, which not only solves the problem that the second electric power module has a large axial dimension and cannot complete the shaft in a limited space. The problem of the arrangement of the system, and reduce the number of gear pairs, improve the transmission efficiency of the transmission, and reduce the cost of the transmission;

2) The first gear of the intermediate shaft and the second electric power intervention gear are respectively arranged at both ends of the intermediate shaft, avoiding the arrangement of the first gear of the intermediate shaft and the second electric power intervention gear next to the bearing on the same side, and the load carried by the bearing is too large. Risk of large and reduced life expectancy. In this way, the load distribution on the entire intermediate shaft is balanced, and the service life of the intermediate shaft and bearings is improved.

Instructions attached

Fig. 1 is a prior art dual-motor power shaft arrangement structure diagram;

Fig. 2 is a structural diagram of the layout of the dual-motor power shaft system of the present invention.

Detailed ways

As shown in Fig. 1, the prior art dual-motor power shaft arrangement structure includes:

Motor 01, motor output shaft gear 02, motor intermediate gear 03, motor first transition gear 04 and motor second transition gear 05; motor 01 power passes through motor output shaft gear 02, motor intermediate gear 03, motor second transition gear 05, Motor first transition gear 04 output;

The first intermediate shaft 026, the motor intervening gear 06, the first intermediate shaft fifth gear 07, the first synchronizer 08, the reverse gear 09 and the first intermediate shaft constant mesh teeth 010; the motor intervening gear 06, the first intermediate shaft five Gear gear 07, first synchronizer 08, reverse gear 09 and first countershaft constant mesh teeth 010 are sequentially arranged on first countershaft 026; wherein, motor intervening gear 06 and first countershaft constant mesh teeth 010 are fixed on On the first intermediate shaft 026, the first intermediate shaft fifth-speed gear 07 and the reverse gear 09 are idly sleeved on the first intermediate shaft 026, and the motor intervening gear 06 meshes with the motor first transition gear 04;

Input shaft 027, input shaft fourth-gear gear 011, input shaft third-gear gear 012, input shaft fifth-gear gear 013, input shaft second-gear gear 014, input shaft first-gear gear 015; the input shaft 027 is fixedly arranged in sequence. Fourth gear 011, input shaft third gear 012, input shaft fifth gear 013, input shaft second gear 014 and input shaft first gear 015;

Second intermediate shaft 028, second intermediate shaft fourth gear 016, second synchronizer 017, second intermediate shaft third gear 018, second intermediate shaft second gear 019, third synchronizer 020, second intermediate shaft one First gear 021, second countershaft constant mesh gear 022; second countershaft 4th gear 016, second synchronizer 017, second countershaft 3rd gear 018, second countershaft 2 Gear gear 019, third synchronizer 020, first gear gear 021 of the second countershaft, and constant meshing gear 022 of the second countershaft; wherein, the second countershaft constant meshing gear 022 is fixed on the second countershaft 028; the second intermediate shaft Shaft fourth gear 016 meshes with input shaft second gear 014, second intermediate shaft third gear 018 meshes with input shaft third gear 012, second intermediate shaft second gear 019 meshes with input shaft second gear 014, second The first gear 021 of the countershaft meshes with the first gear 015 of the input shaft; the second countershaft constant mesh gear 022 is fixedly arranged on the second countershaft 028; the second countershaft fourth gear 016 and the second countershaft third gear 018 The empty sleeve is arranged on the second countershaft 028, and the second synchronizer 017 switches and selects between the second countershaft fourth gear 016 and the second countershaft third gear 018; the second countershaft second gear 019 and the second The first gear 021 of the countershaft is arranged empty on the second countershaft 028, and the third synchronizer 020 switches and selects between the second gear 019 of the second countershaft and the first gear 021 of the second countershaft;

The differential main reduction gear 023 and the differential 024 ; the first countershaft constant meshing gear 010 and the second countershaft constant meshing gear 022 respectively mesh with the differential main reduction gear 023 to provide power to the differential 024 .

In the prior art dual-motor power shaft arrangement structure, when the axial size of the motor 01 is small, the arrangement of the shaft system is relatively easy; but when the transmission motor is used more often in the gear pair, the axial size of the motor 01 begins to change. Larger, the transmission design is more complicated, which not only reduces the transmission efficiency of the entire transmission, but also increases the cost of the transmission.

In addition, the first gear 021 of the second countershaft is generally arranged on the bearing side of the case close to the engine end, together with the second countershaft constant mesh gear 022, it will increase the bearing load here and cause the system to be unstable.

As shown in Figure 2, the dual-motor power shaft arrangement structure of the present invention includes:

The first power motor module 8, the first power input shaft 19, the gear gear of the input shaft, the countershaft 20, the gear gear of the counter shaft and the constant meshing gear 15 of the counter shaft; the gear gear of the input shaft includes: the first gear of the input shaft 4 , input shaft fourth gear 5, input shaft third gear 6 and input shaft second gear 7; intermediate shaft gears include: intermediate shaft first gear 9, first synchronizer 10, intermediate shaft fourth gear 11, intermediate Shaft third gear 12, second synchronizer 13 and intermediate shaft second gear 14;

On the first power input shaft, the gears of the input shaft fixedly arranged sequentially are: the first gear gear 4 of the input shaft, the fourth gear gear 5 of the input shaft, the third gear gear 6 of the input shaft, and the second gear gear 7 of the input shaft; The countershaft gears are: countershaft first gear 9, first synchronizer 10, countershaft fourth gear 11, countershaft third gear 12, second synchronizer 13 and countershaft second gear 14; countershaft The first gear 9, the countershaft fourth gear 11, the countershaft third gear 12, and the countershaft second gear 14 are idly sleeved on the countershaft 20 in turn.

Input shaft first gear 4 meshes with intermediate shaft first gear 9; input shaft fourth gear 5 meshes with intermediate shaft fourth gear 11; input shaft third gear 6 meshes with intermediate shaft third gear 12; input shaft second gear 7 meshes with the countershaft second gear 14; the first synchronizer 10 switches between the countershaft first gear and the countershaft fourth gear; the second synchronizer 13 is between the countershaft third gear and the countershaft second gear switch.

The second electric power motor module 1, the second power output shaft gear 2, the second electric power intermediate shaft 21, the second electric power intermediate gear 3, and the second electric power intervening gear 16; the second electric power intermediate gear 3 is fixed on the On the second electric power intermediate shaft 21; the second electric power intervening gear 16 is fixedly arranged on the intermediate shaft 20, and is arranged side by side with the intermediate shaft constant meshing gear 15; the intermediate shaft first gear 9 and the second electric power intervening gear 16 are respectively arranged at both ends of the intermediate shaft.

Differential final reduction gear 17 and differential 18;

The power of the first electric power motor module is transferred to the differential through the input shaft gear on the first electric power input shaft, the intermediate shaft gear on the intermediate shaft, the intermediate shaft constant mesh gear 15, and the differential final reduction gear 17. Gearbox 18.

The power of the second electric power motor module is transmitted through the second electric power output shaft gear 2, the second electric power intermediate gear 3, the second electric power intervening gear 16, the intermediate shaft constant meshing gear 15, and the differential final reduction gear 17. Differential 18.

The invention also discloses a transmission adopting the double-motor power shaft arrangement structure.

Due to the large axial size of the motor, the arrangement of the shaft system cannot be completed in a limited space, so the second electric power intervening gear 16 is inserted behind the intermediate shaft constant meshing gear 15, which increases the axial arrangement space of the second electric power motor , not only solves the problem of insufficient space, but also reduces multiple gear pairs, improves the transmission efficiency of the transmission, and reduces the cost of the transmission.

Since the second electric power intervening gear 16 is arranged next to the intermediate shaft constant meshing gear 15, if the intermediate shaft first gear 9 is arranged next to the intermediate shaft constant meshing gear 15, the load carried by the bearing is too large, and the service life of the bearing will be reduced. There is a risk. Arranging the intermediate shaft first gear 9 and the second electric power intervening gear 16 respectively at both ends of the intermediate shaft can just balance the load distribution on the entire shaft and improve the service life of the intermediate shaft and bearings.

Claims (7)

1. double-motor power shaft system arrangement structure, it is characterised in that: including,

First electronic power module (8), the first electric power input shaft (19), input shaft shifting gear, jackshaft (20), jackshaft shelves Position gear and jackshaft constant mesh gear (15);The input shaft shifting gear is fixed on the first electric power input shaft (19), The jackshaft shifting gear empty set is arranged on jackshaft, and jackshaft constant mesh gear (15) is fixed on jackshaft (20)；

Second electronic power module (1), the second electric power output shaft gear (2), the second electric power jackshaft (21), the second electric power Intermediate gear (3), the second electric power intervention gear (16)；The second electric power intermediate gear (3) is fixed on the second electric power On jackshaft (21)；Second electric power intervention gear (16) fixed and arranged is often nibbled on jackshaft (20), and with jackshaft Gear (15) are closed to be arranged side by side；

Differential mechanism final gear (17) and differential mechanism (18)；

The power of first electronic power module (8) is by input shaft shifting gear, the jackshaft on the first electric power input shaft (19) On jackshaft shifting gear, jackshaft constant mesh gear, differential mechanism final gear be passed to differential mechanism；

The power of second electronic power module (1) is by second on the second electric power output shaft gear, the second electric power jackshaft Electric power intermediate gear, the second electric power intervention gear, jackshaft constant mesh gear, differential mechanism final gear are passed to differential Device.

2. double-motor power shaft system arrangement structure as described in claim 1, it is characterised in that:

Input shaft shifting gear includes: one shelves gear of input shaft (4), input shaft fourth gear (5), input shaft third gear (6) With input shaft intermediate gear (7)；Successively one shelves gear of fixed and arranged input shaft, input shaft four on first electric power input shaft (19) Shelves gear, input shaft third gear and input shaft intermediate gear.

3. double-motor power shaft system arrangement structure as claimed in claim 2, it is characterised in that:

Jackshaft shifting gear include: one shelves gear of jackshaft (9), the first synchronizer (10), jackshaft fourth gear (11), in Between axis third gear (12), the second synchronizer (13) and secondary gear of intermediate shaft (14)；Jackshaft is sequentially arranged centre on (20) Two grades of one shelves gear of axis, the first synchronizer, jackshaft fourth gear, third-speed gear of intermediate shaft, the second synchronizer and jackshaft teeth Wheel；One shelves gear of input shaft is engaged with one shelves gear of jackshaft；Input shaft fourth gear is engaged with jackshaft fourth gear；Input Axis third gear is engaged with third-speed gear of intermediate shaft；Input shaft intermediate gear is engaged with secondary gear of intermediate shaft；One grade of jackshaft On jackshaft, the first synchronizer exists for gear, jackshaft fourth gear, third-speed gear of intermediate shaft and secondary gear of intermediate shaft empty set Switch between one shelves gear of jackshaft and jackshaft fourth gear, second is synchronous in two grades of teeth of third-speed gear of intermediate shaft and jackshaft Switch between wheel.

4. double dynamical shaft system arrangement structure as claimed in claim 3, it is characterised in that: one shelves gear of jackshaft and second electronic Power intervention gear (16) is arranged in the both ends of jackshaft.

5. double dynamical shaft system arrangement structure as claimed in claim 4, it is characterised in that: the second electronic power module (1) is second Power motor.

6. double dynamical shaft system arrangement structure as claimed in claim 5, it is characterised in that: the first electronic power module (8) is first Power motor.

7. using the speed changer such as any one of claim 1 to 6 double-motor power shaft system arrangement structure.