CN117799419A - Four-motor electromechanical compound transmission device for tracked vehicle - Google Patents
Four-motor electromechanical compound transmission device for tracked vehicle Download PDFInfo
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- CN117799419A CN117799419A CN202410157847.4A CN202410157847A CN117799419A CN 117799419 A CN117799419 A CN 117799419A CN 202410157847 A CN202410157847 A CN 202410157847A CN 117799419 A CN117799419 A CN 117799419A
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Abstract
The invention relates to a four-motor electromechanical compound transmission device for a tracked vehicle, which comprises an engine and two double-motor driving systems which are symmetrically arranged at two sides of the engine, wherein the two double-motor driving systems respectively correspondingly drive crawler mechanisms at two sides; two ends of the engine are connected with 2 speed-changing planetary gear mechanisms, and the two double-motor driving systems are respectively in power coupling with the engine through the speed-changing planetary gear mechanisms; and a differential planetary gear coupling mechanism is arranged between the two double-motor driving systems, and the two double-motor driving systems are in power coupling through the differential planetary gear coupling mechanism. The invention adopts symmetrical structure arrangement, the motor, the speed-changing planetary gear mechanism, the speed-reducing planetary row, the fixed shaft gear speed-reducing mechanism and the two-gear speed-changing planetary gear mechanism are all symmetrically arranged, the structure and the process are simple, and the space arrangement of the whole vehicle is facilitated. Meanwhile, steering power reflux can be realized, so that energy consumption can be reduced, and the power grade of the motor can be reduced.
Description
Technical Field
The invention belongs to the technical field of crawler electric drive, and relates to a four-motor electromechanical compound transmission device for a crawler vehicle.
Background
Steering of a conventional tracked vehicle is accomplished by differential speed of the two side tracks, with the drive train producing differential speed of the two side tracks via associated clutches/brakes, or hydraulic, electrical, etc. speed regulating elements. Unlike wheeled vehicles, the steering of tracked vehicles is power steering, which requires the power of the power system to overcome the steering resistance of the road surface, and requires a large steering driving moment in difficult road surfaces or small-radius steering conditions. To achieve tracked vehicle steering, the inboard track needs to provide braking force and the outboard track needs to provide driving force. When the vehicle speed is high, the inner crawler belt can generate high steering reflux power (braking power); if the braking power can be efficiently transmitted to the outer crawler belt, the input power of a power source can be greatly saved.
Electrification is a development trend of a vehicle power transmission system, and a tracked vehicle is driven and steered by adopting a motor, so that the maneuvering performance can be greatly improved. The planetary gear mechanism is adopted as a coupling mechanism of the transmission system, and the transmission system of the hybrid tracked vehicle capable of realizing double output is designed, so that a complex steering device can be omitted, independent and accurate control of the two side tracks can be realized, and steering and center steering in high-efficiency travelling can be realized by controlling the torque of the two side tracks.
The multi-motor driving system can realize flexible distribution of power, becomes the development trend of an electric driving system, can conveniently realize coupling and decoupling of driving and steering, and is the development direction of the electric driving system of the tracked vehicle.
Disclosure of Invention
In view of the above, the invention provides a four-motor electromechanical compound transmission device for a tracked vehicle, which comprises 4 driving motors and an engine, wherein a multi-planet transmission mechanism is used as a power coupling mechanism, and the power flow direction in the transmission system is changed by adding a mode switching mechanism, and meanwhile, the motors are regulated and controlled, so that the accurate control of the power output by the tracked wheels on two sides can be realized, and the effects of high-efficiency traveling, medium-small radius steering and central steering are achieved. The planetary gear mechanism is used as a transmission main body, so that flexible power distribution between four motors and one engine can be realized.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a four-motor electromechanical compound transmission device for a tracked vehicle comprises an engine and two double-motor driving systems which are symmetrically arranged on two sides of the engine, wherein the two double-motor driving systems respectively and correspondingly drive crawler mechanisms on two sides;
two ends of the engine are connected with 2 speed-changing planetary gear mechanisms, and the two double-motor driving systems are respectively in power coupling with the engine through the speed-changing planetary gear mechanisms; and a differential planetary gear coupling mechanism is arranged between the two double-motor driving systems, and the two double-motor driving systems are in power coupling through the differential planetary gear coupling mechanism.
Further, the double-motor driving system comprises a first motor, a second motor, a speed reduction planetary row, a fixed shaft gear speed reduction mechanism and a two-gear speed change planetary gear mechanism;
the first motor, the variable speed planetary gear mechanism, the fixed shaft gear speed reducing mechanism and the speed reducing planetary row are sequentially in transmission connection; the second motor, the speed reduction planetary row are connected, the differential planetary gear coupling mechanism and the two-gear speed change planetary gear mechanism are sequentially in transmission connection; the two-gear speed-changing planetary gear mechanism is in transmission connection with the crawler mechanism; the first motor is in power coupling with the engine through a speed-changing planetary gear mechanism, and the second motor is in power coupling with the first motor and/or the engine through a speed-reducing planetary gear;
and the two decelerating planetary rows in the two double-motor driving systems are in power coupling through a differential planetary gear coupling mechanism.
Further, the motor control module and the power battery module are also included; the first motor and the second motor in the two double-motor driving systems are connected with the motor control module and the power battery module;
the first motor and the second motor are arranged in parallel, and the fixed-axis gear reduction mechanism is arranged between the speed reduction planetary gear row and the speed change planetary gear mechanism; the second motor of the two dual motor drive systems is coaxially arranged.
Further, the differential planetary gear coupling mechanism comprises two differential planetary gear mechanisms, wherein a planet carrier and a gear ring in the two differential planetary gear mechanisms are in cross connection with each other, namely, the planet carrier of any one differential planetary gear mechanism is fixedly connected with the gear ring of the other differential planetary gear mechanism;
the speed reduction planetary row is connected with a sun gear in the differential planetary gear mechanism; and a planet carrier in the differential planetary gear mechanism is connected with a coupling output shaft and is connected with the two-gear speed-changing planetary gear mechanism through the coupling output shaft.
Further, the two-gear speed-changing planetary gear mechanism comprises a two-gear speed-changing sun gear, a two-gear speed-changing planetary carrier, a two-gear speed-changing gear ring, a brake and a synchronizer; the coupling output shaft is connected with a two-gear speed change sun gear, and the two-gear speed change planet carrier is rotationally arranged in the two-gear speed change gear ring through a planet gear; the two-gear speed-changing planet carrier is provided with an output member which is in transmission connection with the crawler mechanism;
the synchronizer is arranged between the two-gear speed changing planet carrier and the two-gear speed changing sun gear, and the direct power transmission between the two-gear speed changing planet carrier and the two-gear speed changing sun gear is realized through the switching of the synchronizer; the two-gear speed change gear ring is provided with the brake, and the two-gear speed change gear ring is fixed and freely rotated through the switching of the brake.
Further, the speed reduction planetary row comprises a speed reduction sun gear, a speed reduction planetary carrier and a speed reduction gear ring; the motor is used for decelerating and increasing the torque of the first motor and the second motor;
the fixed-axis gear speed reducing mechanism is in meshed transmission with a speed reducing planet carrier, the speed reducing planet carrier is arranged in a speed reducing gear ring in a rotating mode through a planet wheel, and brakes are arranged on two sides of the speed reducing gear ring; the second motor is connected with the speed reduction sun gear; the reduction planet carrier is connected with a sun gear in the differential planet gear coupling mechanism.
Further, the speed-changing planetary gear mechanism comprises a speed-changing sun gear, a speed-changing planet carrier and a speed-changing gear ring; the engine is connected with a speed-changing planet carrier, the speed-changing planet carrier is arranged in a speed-changing gear ring in a rotating mode through a planet wheel, the first motor is connected with a speed-changing sun wheel, and the speed-changing gear ring is meshed with a fixed-shaft gear speed-reducing mechanism for transmission.
Further, the fixed shaft gear speed reducing mechanism comprises a fixed shaft speed reducing gear and an outer gear ring, wherein the outer gear ring is fixedly arranged on the speed changing gear ring and is meshed with the fixed shaft speed reducing gear for transmission, and the fixed shaft speed reducing gear is meshed with the speed reducing planetary gear row for transmission.
Further, the working mode of the four-motor electromechanical compound transmission device for the tracked vehicle is correspondingly controlled according to working conditions, and the control mode is as follows:
parking conditions: the first motor and the second motor in the two double-motor driving systems stop working, all the brakes and the clutches are separated, the two-gear speed-changing planetary gear mechanism is in neutral gear, the engine does not work, no power is transmitted, and the whole vehicle is in a parking or idling working condition;
forward straight running condition: the first motors in the two double-motor driving systems are in a power generation state, the engine charges the power battery module through the two first motors, the two second motors are in a driving state, and when a brake in the two-gear speed change planetary gear mechanism is combined and a synchronizer is separated, the two-gear speed change planetary gear mechanism is in a low gear and runs at a low speed; when the brake in the two-gear speed-changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed-changing planetary gear mechanism is in a high gear and runs at a high speed;
reversing running conditions: the two-gear speed-changing planetary gear mechanism is in a low gear and runs at a low speed when a brake in the two-gear speed-changing planetary gear mechanism is combined and a synchronizer is separated; when the brake in the two-gear speed-changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed-changing planetary gear mechanism is in a high gear and runs at a high speed;
small radius steering conditions: the first motor and the second motor in one double-motor driving system are in a power generation state, and the first motor and the second motor in the other double-motor driving system are in a driving state; the engine charges the battery power module through the first motor and the second motor which are in a power generation state; when the brake in the two-gear speed changing planetary gear mechanism is combined and the synchronizer is separated, the two-gear speed changing planetary gear mechanism is in a low gear and turns at a low speed; when a brake in the two-gear speed changing planetary gear mechanism is separated and a synchronizer is combined, the two-gear speed changing planetary gear mechanism is in a high gear and turns at a high speed;
center steering conditions: the first motor in one double-motor driving system and the second motor in the other double-motor driving system are both in a power generation state, and the other first motor and the second motor are both in a driving state; the engine charges the battery power module through the first motor and the second motor which are in a power generation state; when the brake in the two-gear speed changing planetary gear mechanism is combined and the synchronizer is separated, the two-gear speed changing planetary gear mechanism is in a low gear and turns at a low speed; when the brake in the two-gear speed changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed changing planetary gear mechanism is in a high gear and turns at a high speed.
The invention has the beneficial effects that:
1. the invention adopts symmetrical structure arrangement, the motor, the speed-changing planetary gear mechanism, the speed-reducing planetary row, the fixed shaft gear speed-reducing mechanism and the two-gear speed-changing planetary gear mechanism are all symmetrically arranged, the structure and the process are simple, and the space arrangement of the whole vehicle is facilitated.
2. The differential planetary gear coupling mechanism can realize steering power backflow, so that the energy consumption can be reduced, and the power grade of a motor can be reduced.
3. The four motors can be designed at high rotation speed, so that the power density of the motors can be improved; the power distribution between 4 motors and the engine can be realized, and the high-efficiency driving requirements of different loads are met; ensuring the maneuvering performance of the vehicle.
4. The output ends at two sides are provided with high and low gears, so that two-side multi-section differential output can be realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a four-motor electromechanical compound transmission for a tracked vehicle in accordance with the present invention.
FIG. 2 is a schematic diagram of the power flow for the four-motor electromechanical compound transmission of the present invention for a tracked vehicle in a straight-running condition.
FIG. 3 is a schematic power flow diagram of a center steering condition of the four-motor electromechanical compound transmission for a tracked vehicle of the present invention.
FIG. 4 is a schematic diagram of the power flow for a four-motor electromechanical compound transmission for a tracked vehicle in accordance with the present invention under small radius cornering conditions.
FIG. 5 is a schematic diagram of the reverse operating mode power flow of the four-motor electromechanical compound transmission for a tracked vehicle of the present invention.
Reference numerals: 1-a motor control module; 2-a power battery module; 3-engine; 4a, b-gear ring; 5a, b-a variable speed planet carrier; 6a, b-variable speed sun gear; 7a, b-motor stator; 8a, b-a first motor; 9a, b-outer gear ring; 10a, b-fixed shaft reduction gears; 11a, b-reduction planetary carriers; 12a, b-brake; 13a, b-reduction gear ring; 14a, b-reduction sun gear; 15a, b-sun gear; 16a, b-carrier; 17a, b-ring gear; 18a, b-brake; 19a, b-coupled output shafts; 20a, b-sun gear shafts; 21a, b-a second motor; 22a, b-two speed change sun gear; 23a, b-planets; 24a, b-two-speed gear ring; 25a, b-synchronizer; 26a, b-brake; 27a, b-output member; 28a, b-planets; 29a, b-planets; 30a, b-planets.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, a four-motor electromechanical composite transmission device for a tracked vehicle comprises an engine 3 and two double-motor driving systems symmetrically arranged on two sides of the engine 3, wherein the two double-motor driving systems respectively and correspondingly drive crawler mechanisms on two sides; two ends of the engine 3 are connected with 2 variable speed planetary gear mechanisms, and the two double-motor driving systems are respectively in power coupling with the engine 3 through the variable speed planetary gear mechanisms; a differential planetary gear coupling mechanism is arranged between the two double-motor driving systems, and the two double-motor driving systems are in power coupling through the differential planetary gear coupling mechanism.
The motor control system also comprises a motor control module 1 and a power battery module 2; the first motor and the second motor 21 in the two double-motor driving systems are connected with the motor control module 1 and the power battery module 2; the first motor and the second motor 21 are arranged in parallel, and the fixed-axis gear reduction mechanism is arranged between the reduction planetary gear row and the speed-change planetary gear mechanism; the second motor 21 in the two-motor drive systems is arranged coaxially.
Since the two dual motor driving systems are symmetrical, a and b are marked as distinction in the figure, and one of them is taken as an example to describe the detailed structure:
the double-motor driving system comprises a first motor 8a, a second motor 21a, a speed reduction planetary gear, a fixed-shaft gear speed reduction mechanism and a two-gear speed change planetary gear mechanism; the first motor 8a, the variable speed planetary gear mechanism, the fixed shaft gear speed reducing mechanism and the speed reducing planetary row are sequentially connected in a transmission way; the second motor 21a, the decelerating planetary row connection, the differential planetary gear coupling mechanism and the two-gear speed changing planetary gear mechanism are sequentially in transmission connection; the two-gear speed-changing planetary gear mechanism is in transmission connection with the crawler mechanism; the first motor 8a and the engine 3 are in power coupling through a speed-changing planetary gear mechanism, and the second motor 21a is in power coupling with the first motor and/or the engine 3 through a speed-reducing planetary gear; and the two decelerating planetary rows in the two double-motor driving systems are in power coupling through a differential planetary gear coupling mechanism.
The four motors are identical in structure, taking the first motor 8a as an example, and comprise a motor stator 7a and a motor rotor.
The two-gear speed-changing planetary gear mechanism comprises a two-gear speed-changing sun gear 22a, a two-gear speed-changing planetary carrier, a two-gear speed-changing gear ring 24a, a brake 26a and a synchronizer 25a; the coupling output shaft 19a is connected with a two-gear speed change sun gear 22a, and a two-gear speed change planet carrier is rotatably arranged in a two-gear speed change gear ring 24a through a planet gear 23 a; the two-gear speed-changing planet carrier is provided with an output member 27a, and is in transmission connection with the crawler mechanism through the output member 27 a;
a synchronizer 25a is arranged between the two-gear speed changing planet carrier 5a and the two-gear speed changing sun gear 22a, and the power between the two-gear speed changing planet carrier and the two-gear speed changing sun gear 22a is directly transmitted through the switching of the synchronizer 25a; the two-speed change ring gear 24a is provided with a brake 26a, and the two-speed change ring gear 24a is fixed and freely rotatable by switching of the brake 26 a.
The decelerating planetary arrangement comprises a decelerating sun gear 14a, a decelerating planet carrier 11a and a decelerating gear ring 13a; for decelerating and increasing torque of the first motor 8a and the second motor 21 a;
the fixed-axis gear speed reducing mechanism is meshed with the speed reducing planet carrier 11a for transmission, the speed reducing planet carrier 11a is rotationally arranged in the speed reducing gear ring 13a through the planet gears 29a, and the two sides of the speed reducing gear ring 13a are provided with the brakes 12a and 18a; the second motor 21a is connected with the reduction sun gear 14a through the sun gear shaft 20 a; the reduction carrier 11a is connected to a sun gear 15a in the differential planetary gear coupling mechanism.
The speed change planetary gear mechanism comprises a speed change sun gear 6a, a speed change planet carrier 5a and a speed change gear ring 4a; the engine 3 is connected with a speed changing planetary carrier 5a, the speed changing planetary carrier 5a is rotatably arranged in a speed changing gear ring 4a through a planetary gear 28a, a first motor is connected with a speed changing sun gear 6a, and the speed changing gear ring 4a is meshed with a fixed-shaft gear speed reducing mechanism for transmission.
The fixed-axis gear speed reducing mechanism comprises a fixed-axis speed reducing gear 10a and an outer gear ring 9a, wherein the outer gear ring 9a is fixedly arranged on the speed changing gear ring 4a and is meshed with the fixed-axis speed reducing gear 10a for transmission, and the fixed-axis speed reducing gear 10a is meshed with a speed reducing planetary gear set for transmission.
The differential planetary gear coupling mechanism comprises two differential planetary gear mechanisms, a planet carrier 16a in the two differential planetary gear mechanisms is rotatably arranged in a gear ring 17a through a planet wheel 30a, a planet carrier 16b is rotatably arranged in a gear ring 17b through a planet wheel 30b, wherein the planet carrier 16a is fixedly connected with the gear ring 17b, and the planet carrier 16b is fixedly connected with the gear ring 17 a.
The carrier 16a in the reduction planetary row is connected with the sun gear 15a in the differential planetary gear mechanism; the carrier 16a in the differential planetary gear mechanism is simultaneously connected with a coupling output shaft 19a, and is connected with a two-gear speed change sun gear 22a of the two-gear speed change planetary gear mechanism through the coupling output shaft 19 a.
The engine 3 is arranged at the center of the transmission system, and can output power to the variable speed planetary gear mechanisms at two sides, the first motor 8a and the first motor 21a are arranged at the right side of the transmission system, the second motor 8b and the second motor 21b are arranged at the left side of the transmission system, and five power components are connected with output members at two sides through a plurality of rows of planetary gear mechanisms.
In the front power chain, power output from both sides of the engine 3 is coupled with the first motors 8a and b on both sides, and is coupled with the second motors 21a and b after being decelerated after being subjected to a fixed reduction ratio, and is transmitted to the power output members 27a and b on both sides after being subjected to a differential planetary gear coupling mechanism and a two-gear speed change planetary gear mechanism.
The working mode of the four-motor electromechanical compound transmission device for the tracked vehicle is correspondingly controlled according to working conditions, and the control mode is shown in the table 1:
TABLE 1 modes of operation of the invention
Parking conditions: the first motor and the second motor in the two double-motor driving systems stop working, all the brakes and the clutches are separated, the two-gear speed-changing planetary gear mechanism is in neutral gear, the engine does not work, no power is transmitted, and the whole vehicle is in a parking or idling working condition.
As shown in fig. 2, forward straight drive conditions: the engine 3 provides power for the whole system, the first motors 8a and b in the two double-motor driving systems are in a power generation state, the engine 3 charges the power battery module 2 through the first motors 8a and b, the second motors 21a and b are in a driving state, when the vehicle runs at a low speed, the synchronizers 25a and b are separated, the brakes 26a and b are combined, and power is output through the output members 27a and b at two sides. When traveling at high speed, the synchronizers 25a and b are engaged, the brakes 26a and b are disengaged, and the output shafts 19a and b are connected to the output members 27a and b on both sides via the synchronizers 25a and b, thereby directly outputting power.
As shown in fig. 3, the center steering condition: the first motor 8a and the second motor 21b are both in a power generation state, and the first motor 8b and the second motor 21a are both in a driving state; the engine 3 charges the battery power module 2 through the first motor 8a and the second motor 21b. When traveling at low speed, the synchronizer 25a is disengaged, the brake 26a is engaged, the two-speed change sun gear 22a is connected to the planetary gear 23a, and power is output through the output member 27 a. When traveling at a high speed, the synchronizer 25a is engaged, the brake 26a is disengaged, and the coupling output shaft 19a is connected to the output member 27a via the synchronizer 25a, thereby directly outputting power. The motor control module 1 drives the first motor 8b and the second motor 21a, and the engine 3 reversely drags the first motor 8a and the second motor 21b.
As shown in fig. 4, the small radius steering condition: the first motor 8a and the second motor 21a are both in a driving state, and the first motor 8b and the second motor 21b are both in a power generation state; the engine 3 charges the battery power module 2 through the first motor 8b and the second motor 21b in the power generation state. When traveling at low speed, the synchronizer 25a is disengaged, the brake 26a is engaged, the two-speed change sun gear 22a is connected to the planetary gear 23a, and power is output through the output member 27 a. When traveling at a high speed, the synchronizer 25a is engaged, the brake 26a is disengaged, and the coupling output shaft 19a is connected to the output member 27a via the synchronizer 25a, thereby directly outputting power.
As shown in fig. 5, the reverse operation mode: the first electric motors 8a, b are both in a driving state, the second electric motors 21a, b are both in a generating state, and the engine 3 charges the power battery module 2 through the second electric motors 21a, b. When traveling at low speed, the synchronizers 25a and b are disengaged, the brakes 26a and b are engaged, the two-speed sun gears 22a and b are connected to the planetary gears 23a and b, and power is output through the output members 27a and b. When traveling at high speed, the synchronizers 25a and b are engaged, the brakes 26a and b are disengaged, and the output shafts 19a and b are connected to the output members 27a and b via the synchronizers 25a and b, thereby directly outputting power.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a four motor electromechanical composite transmission for tracked vehicle which characterized in that: the crawler belt mechanism comprises an engine and two double-motor driving systems which are symmetrically arranged on two sides of the engine, wherein the two double-motor driving systems respectively and correspondingly drive crawler belt mechanisms on two sides;
two ends of the engine are connected with 2 speed-changing planetary gear mechanisms, and the two double-motor driving systems are respectively in power coupling with the engine through the speed-changing planetary gear mechanisms; and a differential planetary gear coupling mechanism is arranged between the two double-motor driving systems, and the two double-motor driving systems are in power coupling through the differential planetary gear coupling mechanism.
2. The four-motor electromechanical compound transmission for a tracked vehicle of claim 1, wherein: the double-motor driving system comprises a first motor, a second motor, a speed reduction planetary row, a fixed shaft gear speed reduction mechanism and a two-gear speed change planetary gear mechanism;
the first motor, the variable speed planetary gear mechanism, the fixed shaft gear speed reducing mechanism and the speed reducing planetary row are sequentially in transmission connection; the second motor, the speed reduction planetary row are connected, the differential planetary gear coupling mechanism and the two-gear speed change planetary gear mechanism are sequentially in transmission connection; the two-gear speed-changing planetary gear mechanism is in transmission connection with the crawler mechanism; the first motor is in power coupling with the engine through a speed-changing planetary gear mechanism, and the second motor is in power coupling with the first motor and/or the engine through a speed-reducing planetary gear;
and the two decelerating planetary rows in the two double-motor driving systems are in power coupling through a differential planetary gear coupling mechanism.
3. The four-motor electromechanical compound transmission for a tracked vehicle of claim 2, wherein: the motor control module and the power battery module are also included; the first motor and the second motor in the two double-motor driving systems are connected with the motor control module and the power battery module;
the first motor and the second motor are arranged in parallel, and the fixed-axis gear reduction mechanism is arranged between the speed reduction planetary gear row and the speed change planetary gear mechanism; the second motor of the two dual motor drive systems is coaxially arranged.
4. The four-motor electromechanical compound transmission for a tracked vehicle of claim 2, wherein: the differential planetary gear coupling mechanism comprises two differential planetary gear mechanisms, wherein a planet carrier in the two differential planetary gear mechanisms is in cross connection with a gear ring, namely, the planet carrier of any one differential planetary gear mechanism is fixedly connected with the gear ring of the other differential planetary gear mechanism;
the speed reduction planetary row is connected with a sun gear in the differential planetary gear mechanism; and a planet carrier in the differential planetary gear mechanism is connected with a coupling output shaft and is connected with the two-gear speed-changing planetary gear mechanism through the coupling output shaft.
5. The four-motor electromechanical compound transmission for a tracked vehicle of claim 4, wherein: the two-gear speed-changing planetary gear mechanism comprises a two-gear speed-changing sun gear, a two-gear speed-changing planetary carrier, a two-gear speed-changing gear ring, a brake and a synchronizer; the coupling output shaft is connected with a two-gear speed change sun gear, and the two-gear speed change planet carrier is rotationally arranged in the two-gear speed change gear ring through a planet gear; the two-gear speed-changing planet carrier is provided with an output member which is in transmission connection with the crawler mechanism;
the synchronizer is arranged between the two-gear speed changing planet carrier and the two-gear speed changing sun gear, and the direct power transmission between the two-gear speed changing planet carrier and the two-gear speed changing sun gear is realized through the switching of the synchronizer; the two-gear speed change gear ring is provided with the brake, and the two-gear speed change gear ring is fixed and freely rotated through the switching of the brake.
6. The four-motor electromechanical compound transmission for a tracked vehicle of claim 2, wherein: the speed reduction planetary row comprises a speed reduction sun gear, a speed reduction planetary carrier and a speed reduction gear ring; the motor is used for decelerating and increasing the torque of the first motor and the second motor;
the fixed-axis gear speed reducing mechanism is in meshed transmission with a speed reducing planet carrier, the speed reducing planet carrier is arranged in a speed reducing gear ring in a rotating mode through a planet wheel, and brakes are arranged on two sides of the speed reducing gear ring; the second motor is connected with the speed reduction sun gear; the reduction planet carrier is connected with a sun gear in the differential planet gear coupling mechanism.
7. The four-motor electromechanical compound transmission for a tracked vehicle of claim 2, wherein: the speed-changing planetary gear mechanism comprises a speed-changing sun gear, a speed-changing planet carrier and a speed-changing gear ring; the engine is connected with a speed-changing planet carrier, the speed-changing planet carrier is arranged in a speed-changing gear ring in a rotating mode through a planet wheel, the first motor is connected with a speed-changing sun wheel, and the speed-changing gear ring is meshed with a fixed-shaft gear speed-reducing mechanism for transmission.
8. The four-motor electromechanical compound transmission for a tracked vehicle of claim 7, wherein: the fixed shaft gear speed reducing mechanism comprises a fixed shaft speed reducing gear and an outer gear ring, wherein the outer gear ring is fixedly arranged on the speed changing gear ring and is meshed with the fixed shaft speed reducing gear for transmission, and the fixed shaft speed reducing gear is meshed with the speed reducing planetary gear row for transmission.
9. The four-motor electromechanical compound transmission for a tracked vehicle of claim 5, wherein: the working mode of the four-motor electromechanical compound transmission device for the tracked vehicle is correspondingly controlled according to working conditions, and the control mode is as follows:
parking conditions: the first motor and the second motor in the two double-motor driving systems stop working, all the brakes and the clutches are separated, the two-gear speed-changing planetary gear mechanism is in neutral gear, the engine does not work, no power is transmitted, and the whole vehicle is in a parking or idling working condition;
forward straight running condition: the first motors in the two double-motor driving systems are in a power generation state, the engine charges the power battery module through the two first motors, the two second motors are in a driving state, and when a brake in the two-gear speed change planetary gear mechanism is combined and a synchronizer is separated, the two-gear speed change planetary gear mechanism is in a low gear and runs at a low speed; when the brake in the two-gear speed-changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed-changing planetary gear mechanism is in a high gear and runs at a high speed;
reversing running conditions: the two-gear speed-changing planetary gear mechanism is in a low gear and runs at a low speed when a brake in the two-gear speed-changing planetary gear mechanism is combined and a synchronizer is separated; when the brake in the two-gear speed-changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed-changing planetary gear mechanism is in a high gear and runs at a high speed;
small radius steering conditions: the first motor and the second motor in one double-motor driving system are in a power generation state, and the first motor and the second motor in the other double-motor driving system are in a driving state; the engine charges the battery power module through the first motor and the second motor which are in a power generation state; when the brake in the two-gear speed changing planetary gear mechanism is combined and the synchronizer is separated, the two-gear speed changing planetary gear mechanism is in a low gear and turns at a low speed; when a brake in the two-gear speed changing planetary gear mechanism is separated and a synchronizer is combined, the two-gear speed changing planetary gear mechanism is in a high gear and turns at a high speed;
center steering conditions: the first motor in one double-motor driving system and the second motor in the other double-motor driving system are both in a power generation state, and the other first motor and the second motor are both in a driving state; the engine charges the battery power module through the first motor and the second motor which are in a power generation state; when the brake in the two-gear speed changing planetary gear mechanism is combined and the synchronizer is separated, the two-gear speed changing planetary gear mechanism is in a low gear and turns at a low speed; when the brake in the two-gear speed changing planetary gear mechanism is separated and the synchronizer is combined, the two-gear speed changing planetary gear mechanism is in a high gear and turns at a high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410157847.4A CN117799419A (en) | 2024-02-04 | 2024-02-04 | Four-motor electromechanical compound transmission device for tracked vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410157847.4A CN117799419A (en) | 2024-02-04 | 2024-02-04 | Four-motor electromechanical compound transmission device for tracked vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117799419A true CN117799419A (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410157847.4A Pending CN117799419A (en) | 2024-02-04 | 2024-02-04 | Four-motor electromechanical compound transmission device for tracked vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117799419A (en) |
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2024
- 2024-02-04 CN CN202410157847.4A patent/CN117799419A/en active Pending
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