CN113147343B - Three-mode electromechanical compound transmission device for tracked vehicle - Google Patents
Three-mode electromechanical compound transmission device for tracked vehicle Download PDFInfo
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- CN113147343B CN113147343B CN202110307001.0A CN202110307001A CN113147343B CN 113147343 B CN113147343 B CN 113147343B CN 202110307001 A CN202110307001 A CN 202110307001A CN 113147343 B CN113147343 B CN 113147343B
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- planet carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/20—Endless-track steering having pivoted bogie carrying track
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a three-mode electromechanical compound transmission device for a tracked vehicle, which comprises an input shaft, a left output shaft, a right output shaft, a power coupling mechanism, a two-gear speed change mechanism, a left confluence planetary bar, a right confluence planetary bar, a steering mechanism, a first direct-driving motor, a second direct-driving motor, a clutch, a first brake, a second brake and an energy management system, wherein the input shaft is connected with the left output shaft; the power coupling mechanism is used for realizing the shunting and converging of electromechanical power; the two-gear speed change mechanism is used for realizing two deceleration gears through a first brake and a second brake; the steering mechanism comprises a steering motor, a reduction planet row and a steering shaft; energy management systems are used to coordinate and balance electrical power. The transmission device can reduce the torque and power grade of the two direct-drive driving motors, reduce the size and weight of the motors, and realize stepless speed regulation, so that the tracked vehicle obtains the best power performance and fuel economy performance.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a three-mode electromechanical compound transmission device for a tracked vehicle.
Background
The transmission system of the tracked vehicle needs a wide speed regulation range to meet the torque requirements of the working conditions of low-speed difficult off-road pavement and high-speed good pavement. The transmission ratio adjusting range of the single-mode electromechanical composite transmission is difficult to meet the requirements of the load-carrying tracked vehicle on the premise of certain motor power. In the prior art, the problem of large size and heavy weight of a transmission device is solved by a scheme of improving the power grade of a motor.
Disclosure of Invention
In view of this, the invention provides a three-mode electromechanical compound transmission device for a tracked vehicle, which adopts a power coupling mechanism consisting of two compound planetary rows, can reduce the torque and power grade of two direct-driving motors, reduce the volume and weight of the motors, and realize stepless speed regulation, so that the tracked vehicle obtains the optimal power performance and fuel economy performance.
The invention adopts the following specific technical scheme:
a three-mode electromechanical compound transmission device for a tracked vehicle comprises an input shaft, a left output shaft, a right output shaft, a power coupling mechanism, a two-gear speed change mechanism, a left confluence planetary bar, a right confluence planetary bar, a steering mechanism, a first direct-driving motor, a second direct-driving motor, a clutch, a first brake, a second brake and an energy management system;
the power coupling mechanism is a compound planetary mechanism consisting of a first planetary row and a second planetary row and is used for realizing the shunting and converging of electromechanical power;
the two-gear speed change mechanism comprises a third planet row and a fourth planet row and is used for realizing two speed reduction gears through a first brake and a second brake;
the steering mechanism comprises a steering motor, a reduction planet row and a steering shaft;
the first planet row comprises a first gear ring, a first planet carrier, a first sun gear and a planet gear assembly;
the second planetary row includes a second sun gear;
the third planet carrier comprises a third sun gear, a third planet carrier and a third ring gear; the fourth planet row comprises a fourth gear ring, a fourth planet carrier and a fourth sun gear;
the right confluence planet bar comprises a fifth sun gear, a fifth planet carrier and a fifth gear ring; the left confluence planet bar comprises a sixth sun gear, a sixth planet carrier and a sixth gear ring;
the reduction planet row comprises a seventh planet carrier, a seventh sun gear and a seventh gear ring;
the energy management system comprises a power battery pack, is connected with the first direct-drive motor, the second direct-drive motor and the steering motor through cables, and is used for coordinating and balancing electric power;
the connection relationship of the transmission device is as follows:
the input shaft is used for being connected with an engine and is in transmission connection with the first planet carrier; the planet wheel assembly is sleeved on the first planet carrier and is meshed with the first gear ring, the first sun wheel and the second sun wheel; the first sun gear is connected with the second direct-driving motor; the second sun gear is connected with the driving end of the clutch; the first gear ring is connected with the first direct drive motor and the third sun gear; the third planet carrier is connected with the central shaft; the third gear ring is connected with the second brake and the fourth sun gear; the fourth planet carrier is connected with the first brake; the fourth gear ring is connected with the central shaft and the fifth gear ring; the fifth planet carrier is connected with the right output shaft; the sixth gear ring is connected with the central shaft and the driven end of the clutch; the sixth planet carrier is connected with the left output shaft; the fifth sun gear and the sixth sun gear are in transmission connection with the steering shaft; the seventh planet carrier is connected with the steering shaft; the seventh sun gear is connected with the steering motor; the seventh gear ring is fixed.
Furthermore, an input gear is connected to the input shaft; the input gear is meshed with a first gear, and the first gear is meshed with a second gear; the second gear is fixedly connected with the first planet carrier.
Further, the fifth sun gear is connected with the third gear;
and a fourth gear meshed with the third gear is connected to the steering shaft.
Further, the sixth sun gear is connected with a fifth gear; the fifth gear is meshed with a sixth gear, and the sixth gear is meshed with a seventh gear; the seventh gear is connected to the steering shaft.
Further, the first direct drive motor or the second direct drive motor is used for power generation.
Has the advantages that:
according to the three-mode electromechanical compound transmission device for the tracked vehicle, the power coupling mechanism consisting of the two compound planet rows is adopted, so that the torque and the power grade of the two direct-driving motors are greatly reduced, the volume and the weight of the motors are reduced, and the power density of the transmission device is favorably improved; due to the adoption of zero differential steering, the backflow power of the inner crawler belt in the steering process can be transmitted to the outer crawler belt, and the efficient transmission and utilization of the backflow power of the steering are realized; the two-gear speed change mechanism is matched with the power coupling mechanism, and can realize three-mode continuous stepless transmission, wherein the first mode meets the low-speed large-torque climbing working condition, the second mode is a normal starting and medium-speed working condition, and the third mode is a high-speed working condition; through the switching of clutch and stopper, can realize a mechanical gear, at mechanical gear operating mode, can obtain higher transmission efficiency to two generators also can provide the electric energy for external power consumption load, or provide extra torque and make tracked vehicle obtain higher mobility.
Meanwhile, the three-mode electromechanical compound transmission device can also realize various operation conditions under the coordination of a power battery pack of the energy management system, such as: the system comprises an electric working condition, a composite driving working condition, a braking energy recovery working condition, an external power supply working condition, a battery auxiliary acceleration working condition and the like.
Drawings
FIG. 1 is a schematic diagram of the drive configuration of a three-mode, electro-mechanical compound transmission for a tracked vehicle of the present invention.
Wherein 1-input shaft, 2-input gear, 3-first gear, 4-second gear, 5-first ring gear, 6-planetary gear assembly, 7-first planet carrier, 8-first sun gear, 9-second sun gear, 10-steering shaft, 11-left output shaft, 12-right output shaft, 13-third sun gear, 14-third planet carrier, 15-third ring gear, 16-fourth ring gear, 17-fourth planet carrier, 18-fourth sun gear, 19-fifth ring gear, 20-fifth planet carrier, 21-fifth sun gear, 22-sixth ring gear, 23-sixth planet carrier, 24-sixth sun gear, 25-third gear, 26-fourth gear, 27-central shaft, 28-fifth gear, 29-sixth gear, 30-seventh gear, 31-seventh planet carrier, 32-seventh sun gear, 33-seventh ring gear, 34-energy management system, 35-cable, K1-first planet bar, K2-second planet bar, K3-third planet bar, K4-fourth planet bar, K5-right confluence planet bar, K6-left confluence planet bar, K7-reduction planet bar, B1-first brake, B2-second brake, E2-drive motor, C1-clutch, E3-steering motor
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a three-mode electromechanical compound transmission device for a tracked vehicle, wherein a transmission route diagram of the three-mode electromechanical compound transmission device is shown in FIG. 1, and the transmission device comprises an input shaft 1, a left output shaft 11, a right output shaft 12, a power coupling mechanism, a two-gear speed change mechanism, a left confluent planet row K6, a right confluent planet row K5, a steering mechanism, a first straight driving motor E1, a second straight driving motor E2, a clutch C1, a first brake B1, a second brake B2 and an energy management system 34;
the first straight driving motor E1, the second straight driving motor E2, the first planet row K1, the second planet row K2, the third planet row K3, the fourth planet row K4, the clutch C1, the first brake B1 and the second brake B2 form a straight driving functional part for transmitting the straight driving power of the tracked vehicle; the steering motor E3 and the reduction planet row K7 form a steering function part for transmitting the steering power of the tracked vehicle; the right confluence planetary row K5, the left confluence planetary row K6, the fourth gear 26, the third gear 25, the fifth gear 28, the sixth gear 29 and the seventh gear 30 form a power backflow part for realizing the confluence of straight driving power and steering power;
the input shaft 1 is connected with an engine and used for inputting power generated by the engine, and outputting the power through a left output shaft 11 and a right output shaft 12 after passing through a transmission device to drive the crawler belts on two sides of the tracked vehicle, so that the functions of stepless driving, stepless steering, silent running, central steering and the like of the tracked vehicle are realized;
the power coupling mechanism is a compound planetary mechanism consisting of a first planetary row K1 and a second planetary row K2 and is used for realizing the shunting and converging of electromechanical power;
the two-gear speed change mechanism comprises a third planetary row K3 and a fourth planetary row K4, and is used for realizing two speed reduction gears through a first brake B1 and a second brake B2;
the steering mechanism comprises a steering motor E3, a reduction planet row K7 and a steering shaft 10;
the first planetary row K1 comprises a first ring gear 5, a first planet carrier 7, a first sun gear 8 and a planet wheel assembly 6;
the second planetary row K2 includes a second sun gear 9; the first planet row K1 and the second planet row K2 share the first ring gear 5 and the first planet carrier 6;
the third planetary row K3 includes a third sun gear 13, a third carrier 14, and a third ring gear 15;
the fourth planetary row K4 comprises a fourth ring gear 16, a fourth planet carrier 17 and a fourth sun gear 18;
the right confluence planet row K5 includes a fifth sun gear 21, a fifth planet carrier 20, and a fifth ring gear 19;
the left confluence planetary line K6 includes a sixth sun gear 24, a sixth planet carrier 23 and a sixth ring gear 22;
the reduction planetary row K7 includes a seventh carrier 31, a seventh sun gear 32, and a seventh ring gear 33;
the energy management system 34 comprises a power battery, and the energy management system 34 is connected with the first straight driving motor E1, the second straight driving motor E2 and the steering motor E3 through cables 35 for coordinating and balancing electric power; the first straight-driving motor E1 or the second straight-driving motor E2 can be used for generating electricity; in the steering process of the tracked vehicle, the first straight-driving motor E1 or the second straight-driving motor E2 is in a power generation working condition, and the generated electric energy is transmitted to the steering motor E3 through the energy management system 34, so that the power requirement of the tracked vehicle for steering is met; the electric energy of the steering motor E3 is derived from the first straight driving motor E1 or the second straight driving motor E2;
the connection relationship of the transmission device is as follows:
the input shaft 1 is used for connecting an engine and is in transmission connection with a first planet carrier 7; the planet wheel assembly 6 is sleeved on the first planet carrier 7 and is meshed with the first gear ring 5, the first sun wheel 8 and the second sun wheel 9; the first sun gear 8 is connected with a second direct drive motor E2; the second sun gear 9 is connected with the driving end of the clutch C1; the first ring gear 5 connects the first direct drive motor E1 and the third sun gear 13; the third carrier 14 is connected to the center shaft 27; the third ring gear 15 connects the second brake B2 and the fourth sun gear 18; the fourth planet carrier 17 is connected with a first brake B1; the fourth ring gear 16 is connected with the central shaft 27 and the fifth ring gear 19; the fifth planet carrier 20 is connected with the right output shaft 12; the sixth ring gear 22 connects the central shaft 27 and the passive end of the clutch C1; the sixth planet carrier 23 is connected with the left output shaft 11; the fifth sun gear 21 and the sixth sun gear 24 are both in transmission connection with the steering shaft 10; the seventh carrier 31 is connected to the steering shaft 10; the seventh sun gear 32 is connected with a steering motor E3; the seventh ring gear 33 is fixed.
The three-mode electromechanical compound transmission device for the tracked vehicle completes the shunting and confluence of electromechanical power through the power coupling mechanism, and regulates the speed through the first straight driving motor E1 and the second straight driving motor E2 to realize the stepless speed regulation function; the power coupling mechanism is a two-degree-of-freedom mechanism, so that the torque and the power grade of the first straight driving motor E1 and the second straight driving motor E2 can be reduced, the power of the first straight driving motor E1 and the power of the second straight driving motor E2 account for about 35% of the mechanical input power, and the volume and the weight of the straight driving motors can be greatly reduced; two speed reduction gears can be realized through the two-gear speed change mechanism, the first brake B1 and the second brake B2, the requirement of the wide transmission ratio range of the tracked vehicle is met, the low-speed gear can meet the torque requirement of the tracked vehicle under the low-speed heavy-load working condition, and the high-speed gear can meet the vehicle speed requirement of the tracked vehicle under the high-speed running working condition; the left confluence planet row K6 and the right confluence planet row K5 drive the tracks on the two sides of the tracked vehicle after the speed change power flow and the steering power flow are merged; after the speed difference generated by the steering mechanism passes through the left confluence planetary line K6 and the right confluence planetary line K5, the speed of the crawler on one side is increased, the speed of the crawler on the other side is reduced, and the steering of the crawler vehicle is realized; when the tracked vehicle turns in a small radius, the backflow power of the inner side track is transmitted to the outer side track confluence planet gear ring through the confluence planet gear ring of the inner side track, so that the direct transmission and the efficient utilization of the backflow power are realized; when the crawler vehicle turns in a large radius, the left confluence planet row K6 and the right confluence planet row K5 output power to the crawler belts on two sides.
The three-mode electromechanical compound transmission device for the tracked vehicle adopts a power coupling mechanism consisting of two compound planet rows, so that the torque and the power level of two direct-driving motors are greatly reduced, the volume and the weight of the motors are reduced, and the power density of the transmission device is favorably improved; due to the adoption of zero differential steering, the backflow power of the inner crawler belt in the steering process can be transmitted to the outer crawler belt, and the efficient transmission and utilization of the backflow power of the steering are realized; the two-gear speed change mechanism is matched with the power coupling mechanism, and can realize three-mode continuous stepless transmission, wherein the first mode meets the low-speed large-torque climbing working condition, the second mode is a normal starting and medium-speed working condition, and the third mode is a high-speed working condition; by switching the clutch C1 and the brake, a mechanical gear can be realized, and in the mechanical gear working condition, higher transmission efficiency can be obtained, and the two generators can also provide electric energy for external electric loads or provide extra torque to ensure that the tracked vehicle obtains higher maneuverability.
As shown in the structure of fig. 1, a gear transmission can be adopted between the input shaft 1 and the first planet carrier 7, and the input shaft 1 is connected with an input gear 2; the input gear 2 is meshed with the first gear 3, and the first gear 3 is meshed with the second gear 4; the second gear 4 is fixedly connected with the first planet carrier 7.
Furthermore, the fifth sun gear 21 and the steering shaft 10 can be in transmission connection through a gear, as shown in the structure of fig. 1, the fifth sun gear 21 is connected with the third gear 25; a fourth gear 26 that meshes with the third gear 25 is connected to the steering shaft 10.
Specifically, the sixth sun gear 24 and the steering shaft 10 may be in transmission connection through a gear, as shown in the structure of fig. 1, the sixth sun gear 24 is connected with the fifth gear 28; the fifth gear 28 meshes with a sixth gear 29, and the sixth gear 29 meshes with a seventh gear 30; the seventh gear 30 is connected to the steering shaft 10.
The crawler adopting the transmission device realizes the following conditions of all working conditions and all gears:
neutral gear: neither the first brake B1 nor the second brake B2 is engaged and there is no power input to the left and right collector planets K6 and K5.
Electromechanical composite mode 1: the first brake B1 is engaged, the second brake B2 and the clutch C1 are not engaged, the engine power is input to the power coupling mechanism from the input gear 2, the first gear 3 and the second gear 4, the second straight driving motor E2 is used as a generator, the first straight driving motor E1 is used as a motor, the electric power is transmitted from the second straight driving motor E2 to the energy management system 34 to the first straight driving motor E1, after the mechanical power passes through the power coupling mechanism, the mechanical power output from the first ring gear 5 shared by the second planetary row K2 and the first planetary row K1 is combined with the power of the first direct drive motor E1, the power is output to the central shaft 27 through a two-gear speed change mechanism consisting of a third planet row K3 and a fourth planet row K4, then passes through a left confluence planet row K6 and a right confluence planet row K5, and finally is output from a fifth planet carrier 20 and a sixth planet carrier 23 to drive two-side tracks.
Electromechanical composite mode 2: the second brake B2 is engaged, the first brake B1 and the clutch C1 are not engaged, the engine power is input to the power coupling mechanism from the input gear 2, the first gear 3 and the second gear 4, the second direct-drive driving motor E2 is used as a generator, the first direct-drive driving motor E1 is used as a motor, the electric power is output from the second direct-drive driving motor E2 to the energy management system 34 to the first direct-drive driving motor E1, the mechanical power is output from the first ring gear 5 of the second planetary gear K2 after passing through the power coupling mechanism, the mechanical power is combined with the power of the first direct-drive driving motor E1, the mechanical power is output to the central shaft 27 after passing through the two-gear speed change mechanism, and then passes through the left collecting planetary gear K6 and the right collecting planetary gear K5, and finally the power is output from the fifth planet carrier 20 and the sixth planet carrier 23 to drive two crawler belts.
Electromechanical composite mode 3: the clutch C1 is engaged, neither the first brake B1 nor the second brake B2 is engaged, the engine power is input to the power coupling mechanism from the input gear 2, the first gear 3 and the second gear 4, the first direct drive motor E1 functions as a generator, and the generated power is output to the first direct drive motor E1 from the first ring gear 5 of the power coupling mechanism; the second direct drive motor E2 functions as a motor, and power is input to the power coupling mechanism from the first sun gear 8 of the power coupling mechanism; the electric power of the first direct drive motor E1 passes through the energy management system 34 to the second direct drive motor E2; mechanical power is output from the second sun gear 9 of the power coupling mechanism, is output to the central shaft 27 through the two-gear speed change mechanism consisting of the third planetary row K3 and the fourth planetary row K4, passes through the left confluence planetary row K6 and the right confluence planetary row K5, and finally power is output from the fifth planet carrier 20 and the sixth planet carrier 23 to drive the two-side crawler belts.
Mechanical first gear: the clutch C1 is engaged, the first brake B1 is engaged, the second brake B2 is not engaged, the engine power is input to the power coupling mechanism from the input gear 2, the first gear 3 and the second gear 4, is output from the second sun gear 8 of the power coupling mechanism, is output to the central shaft 27 through the two-gear speed change mechanism composed of the third planetary row K3 and the fourth planetary row K4, passes through the left confluent planetary row K6 and the right confluent planetary row K5, and finally, the power is output from the fifth planet carrier 20 and the sixth planet carrier 23 to drive the two-side crawler. Under the working condition, the first straight driving motor E1 and the second straight driving motor E2 do not work, can work in a generator state to provide electric energy for the outside, or work in an electric state to drive the tracked vehicle after the power of the engine is superposed, and the power performance of the tracked vehicle can be improved.
Mechanical second gear: the clutch C1 is engaged, the second brake B2 is engaged, the first brake B1 is not engaged, the engine power is input to the power coupling mechanism from the input gear 2, the first gear 3 and the second gear 4, is output from the second sun gear 9 of the power coupling mechanism, is output to the central shaft 27 through the third ring gear 15 of the third planetary row K3, passes through the left conflux planetary row K6 and the right conflux planetary row K5, and finally, the power is output from the fifth planet carrier 20 and the sixth planet carrier 23 to drive the two-side crawler belts. Under the working condition, the first straight driving motor E1 and the second straight driving motor E2 do not work, can work in a generator state to provide electric energy for the outside, or work in an electric state to drive the tracked vehicle after the power of the engine is superposed, and the power performance of the tracked vehicle can be improved.
Reversing gear: in a pure electric mode, a first brake B1 is engaged, a second brake B2 and a clutch C1 are engaged, a first driving motor E1 rotates reversely, the power is output to the central shaft 27 through a two-gear speed change mechanism consisting of a third planetary row K3 and a fourth planetary row K4, the power is output from the fifth planet carrier 20 and the sixth planet carrier 23 through a left confluence planetary row K6 and a right confluence planetary row K5, and the crawler belts on two sides are driven reversely.
The power generation working condition during parking: the clutch C1, the first brake B1 and the second brake B2 are not engaged, and engine power passes through the input gear 2, the first gear 3 and the second gear 4, then drives the first planetary row K1 and the second planetary row K2 of the power coupling mechanism to rotate together, and the first straight-driving motor E1 and the second straight-driving motor E2 generate power together.
Mute running condition: the first brake B1 is engaged, the second brake B2 and the clutch C1 are engaged, the first straight driving motor E1 rotates positively, power is transmitted to the central shaft 27 after passing through a two-gear speed change mechanism consisting of a third planet row K3 and a fourth planet row K4, and finally the power is output from the fifth planet carrier 20 and the sixth planet carrier 23 to drive the two-side crawler belts after passing through the left confluence planet row K6 and the right confluence planet row K5.
And (3) steering working condition: the steering motor E3 works, electric energy is supplied to the first straight driving motor E1 or the second straight driving motor E2, the torque of the steering motor E3 is reduced through the reduction planet row K7 and then acts on the steering shaft 10, and the torque passes through the fourth gear 26 and the third gear 25, and the torque is increased in speed through the fifth sun gear 21 on the right side; the speed of the left side is reduced by the sixth sun gear 24 through the seventh gear 30, the sixth gear 29 and the fifth gear 28, so that the speed difference is generated between the two side tracks, and the tracked vehicle achieves steering. During small-radius steering, the steering return power of the inner crawler is directly transmitted to the fifth gear ring 19 and the fifth planet carrier 20 of the right confluence planet row K5 through the sixth planet carrier 23 and the sixth gear ring 22 of the left confluence planet row K6 and the central shaft 27, and finally transmitted to the outer crawler, so that the power levels of the first straight driving motor E1 and the second straight driving motor E2 are effectively reduced.
Center steering: the first brake B1 and the second brake B2 are engaged, the clutch C1 is not engaged, the third planetary row K3 and the fourth planetary row K4 brake the central shaft 27, and the rotational speeds of the sixth ring gear 22 of the left planetary row K6 and the fifth ring gear 19 of the right planetary row K5 are both zero. The steering motor E3 works, the driving torque of the steering motor E3 acts on the steering shaft 10 after passing through the speed reduction planet row K7, and is accelerated through the fourth gear 26 and the third gear 25 and the fifth sun gear 21 on the right side; the left side is decelerated by the sixth sun gear 24 through the seventh gear 30, the sixth gear 29 and the fifth gear 28, so that the speed difference is generated between the two side crawlers, the rotating speeds of the two side crawlers are the same, the directions are opposite, and the central steering of the crawler vehicle is realized.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A three-mode electromechanical compound transmission device for a tracked vehicle is characterized by comprising an input shaft, a left output shaft, a right output shaft, a power coupling mechanism, a two-gear speed change mechanism, a left confluence planetary bar, a right confluence planetary bar, a steering mechanism, a first straight driving motor, a second straight driving motor, a clutch, a first brake, a second brake and an energy management system;
the power coupling mechanism is a compound planetary mechanism consisting of a first planetary row and a second planetary row and is used for realizing the shunting and converging of electromechanical power;
the two-gear speed change mechanism comprises a third planet row and a fourth planet row and is used for realizing two speed reduction gears through a first brake and a second brake;
the steering mechanism comprises a steering motor, a reduction planet row and a steering shaft;
the first planet row comprises a first gear ring, a first planet carrier, a first sun gear and a planet gear assembly;
the second planetary row includes a second sun gear;
the third planet row comprises a third sun gear, a third planet carrier and a third ring gear;
the fourth planet row comprises a fourth gear ring, a fourth planet carrier and a fourth sun gear;
the right confluence planet bar comprises a fifth sun gear, a fifth planet carrier and a fifth gear ring;
the left busbar planet comprises a sixth sun gear, a sixth planet carrier and a sixth gear ring;
the speed reduction planet row comprises a seventh planet carrier, a seventh sun gear and a seventh gear ring;
the energy management system comprises a power battery pack, is connected with the first direct-drive motor, the second direct-drive motor and the steering motor through cables, and is used for coordinating and balancing electric power;
the connection relationship of the transmission device is as follows:
the input shaft is used for being connected with an engine and is in transmission connection with the first planet carrier; the planet wheel assembly is sleeved on the first planet carrier and is meshed with the first gear ring, the first sun wheel and the second sun wheel; the first sun gear is connected with the second direct-driving motor; the second sun gear is connected with the driving end of the clutch; the first ring gear is connected with the first direct drive motor and the third sun gear; the third planet carrier is connected with the central shaft; the third gear ring is connected with the second brake and the fourth sun gear; the fourth planet carrier is connected with the first brake; the fourth gear ring is connected with the central shaft and the fifth gear ring; the fifth planet carrier is connected with the right output shaft; the sixth gear ring is connected with the central shaft and the driven end of the clutch; the sixth planet carrier is connected with the left output shaft; the fifth sun gear and the sixth sun gear are in transmission connection with the steering shaft; the seventh planet carrier is connected to the steering shaft; the seventh sun gear is connected with the steering motor; the seventh gear ring is fixed.
2. The transmission of claim 1, wherein an input gear is connected to said input shaft; the input gear is meshed with a first gear, and the first gear is meshed with a second gear; the second gear is fixedly connected with the first planet carrier.
3. The transmission of claim 2, wherein the fifth sun gear is connected to a third gear;
and a fourth gear meshed with the third gear is connected to the steering shaft.
4. The transmission of claim 3, wherein the sixth sun gear is connected to a fifth gear; the fifth gear is meshed with a sixth gear, and the sixth gear is meshed with a seventh gear; the seventh gear is connected to the steering shaft.
5. The transmission of any one of claims 1 to 4, wherein the first direct drive motor or the second direct drive motor is used to generate electricity.
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| CN113147343B true CN113147343B (en) | 2022-07-08 |
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| CN102229319A (en) * | 2011-04-26 | 2011-11-02 | 中国北方车辆研究所 | Electromechanical compound transmission device of tracked vehicle |
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