CN111775723A - Dual-motor driven electric tractor power coupling device - Google Patents
Dual-motor driven electric tractor power coupling device Download PDFInfo
- Publication number
- CN111775723A CN111775723A CN202010712919.9A CN202010712919A CN111775723A CN 111775723 A CN111775723 A CN 111775723A CN 202010712919 A CN202010712919 A CN 202010712919A CN 111775723 A CN111775723 A CN 111775723A
- Authority
- CN
- China
- Prior art keywords
- power
- motor
- driving
- power output
- tractor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/32—Control or regulation of multiple-unit electrically-propelled vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
-
- 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
-
- 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
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a power coupling device of an electric tractor driven by double motors. Through the left and right engagement and disengagement of the first synchronizer and the second synchronizer and the locking and unlocking of the first brake and the second brake, various working modes including double-motor independent driving, double-motor coupling driving running and double-motor coupling driving rotary tillage can be realized. Thereby satisfying multiple operation conditions of the tractor, increasing the adaptability of the electric tractor to the environment, simultaneously improving the utilization rate of the motor and avoiding the power waste.
Description
Technical Field
The invention belongs to the technical field of electric tractors, and particularly relates to a power coupling device of an electric tractor driven by two motors.
Background
In recent years, due to the shortage of petroleum resources and increasingly serious environmental pollution and other problems, global emission reduction, zero emission, green environmental protection and the like have been turned on, so that the demand of modern agricultural production on low-emission, less-pollution and low-noise agricultural vehicles is more and more urgent. Therefore, relevant standards and regulations are set by all countries, and research and development of new energy agricultural vehicles are promoted.
Compared with the traditional tractor, the electric tractor has the advantages of comfort, cleanness, low noise, no pollution, no emission, simplicity, reliability, low use cost and the like, reduces the dependence degree of agricultural production on fossil energy, and improves the farmland environment and the crop quality. The driving wheel and the power output shaft of the double-motor independent driving type electric tractor are driven by the driving motor and the PTO motor, the speed regulation processes of the driving wheel and the power output shaft are independent, and although the double-motor independent driving type electric tractor has the advantages of low control complexity and good agricultural adaptability, the mechanical power of the double motors cannot be simultaneously output to the driving wheel or the PTO, so that the complete machine is insufficient in power performance under the working condition that the complete machine outputs traction power and rotation power under full load.
The Chinese patent with the application number of 201810031669.9 discloses an electric tractor power splitting and converging device based on an electric bus, which is provided with a battery, a controller, an inverter I, an electric motor, a clutch, a gearbox, a first split box, a main reducer, a differential, wheels, an inverter II, a PTO motor, a second split box, a power coupler, a rotary tillage mechanism, a generator and a control switch; the motor and the PTO motor can work in a single working state mode, and the motor can be coupled with the PTO motor through the power coupler to increase the output power in a working state mode. But the structure is complicated, the control is complex and the volume is large.
Disclosure of Invention
In order to solve the problems, the invention provides a power coupling device of an electric tractor driven by two motors, which solves the problem of serious power waste caused by the fact that the two motors cannot be driven in a combined manner, and overcomes the defects of complex structure, complex control and larger volume of the conventional coupling transmission device.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a bi-motor drive's electric tractor power coupling device which characterized in that: the power transmission device comprises a power battery, a complete machine controller connected with the power battery, a first inverter and a second inverter connected with the complete machine controller, a driving motor and a PTO motor respectively connected with the first inverter and the second inverter, a power coupling mechanism connected with the driving motor and the PTO motor, a transmission mechanism and a rotary tillage mechanism connected with the power coupling mechanism, and a driving wheel connected with the transmission mechanism; the power coupling device comprises a first power input shaft, a first transmission gear connected with the first power input shaft, a second transmission gear connected with the second power input shaft, a first planetary gear assembly, a second planetary gear assembly, a first power output shaft, a second power output shaft, an intermediate shaft, a third transmission gear, a first synchronizer, a fourth transmission gear, a fifth transmission gear, a second synchronizer and a sixth transmission gear; the first planetary gear assembly comprises a first planet carrier, a first sun gear, a first planet gear, a first gear and a first brake, and is connected with the first power output shaft through the first planet carrier; the second planetary gear assembly comprises a second planet carrier, a second sun gear, a second planet gear, a second gear ring and a second brake, and is also connected with the second power output shaft through the second planet carrier; the intermediate shaft is connected with the third transmission gear, the first synchronizer, the fourth transmission gear, the fifth transmission gear, the second synchronizer and the sixth transmission gear.
Further, the driving motor and the PTO motor are arranged on one side of the power coupling mechanism, and the transmission mechanism and the rotary tillage mechanism are arranged on the other side of the power coupling mechanism; the first power input shaft and the second power input shaft are parallel to each other, and the power provided by the driving motor and the PTO motor is further output to the transmission mechanism and the rotary tillage mechanism through the power coupling mechanism.
Furthermore, the first planetary gear assembly and the second planetary gear assembly are symmetrically arranged, the first brake is connected with the first gear ring, the second brake is connected with the second gear ring, the first synchronizer is arranged between the third transmission gear and the fourth transmission gear, the second synchronizer is arranged between the fifth transmission gear and the sixth transmission gear, and the first synchronizer and the second synchronizer are further connected with the intermediate shaft.
Furthermore, the first transmission gear is meshed with the third transmission gear, the second transmission gear is meshed with the fourth transmission gear, the external teeth of the first gear ring are meshed with the sixth transmission gear, and the external teeth of the second gear ring are meshed with the fifth transmission gear.
Furthermore, the power coupling device also realizes the switching of a double-motor independent driving mode, a double-motor coupling driving running mode and a double-motor coupling driving rotary tillage mode through the first synchronizer, the second synchronizer, the first brake and the second brake.
Further, the dual-motor independent driving mode comprises an independent driving tractor running mode, an independent driving tractor rotary tillage mode and an independent driving tractor running rotary tillage mode; when the tractor is in the independent driving tractor running mode, the driving motor outputs power and transmits the power to the first power output shaft through the first power input shaft and the first planetary gear assembly, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels; when the tractor is in a rotary tillage mode of an independent driving tractor, the PTO motor outputs power and transmits the power to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work; when the tractor is in a rotary tillage mode for driving the tractor to run, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first power output shaft through the first power input shaft and the first planetary gear assembly, the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheel, the power output by the PTO motor is transmitted to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work.
Further, the dual-motor coupling driving running mode comprises a coupling driving tractor running mode and a coupling driving tractor running rotary tillage mode; when the coupling driving tractor runs, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first planetary gear assembly through the first power input shaft, the power output by the PTO motor is transmitted to the first planetary gear assembly through the second power input shaft, the first synchronizer and the second synchronizer, the power output by the driving motor and the power output by the PTO motor are coupled with the first planetary gear assembly and transmitted to the first power output shaft, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels; when the coupling driving tractor runs in a rotary tillage mode, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first planetary gear assembly through the first power output shaft, the power output by the PTO motor is transmitted to the first planetary gear assembly through the second power input shaft, the first synchronizer and the second synchronizer, the power output by the driving motor and the power output by the PTO motor are coupled with the first planetary gear assembly and are transmitted to the first power output shaft, the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels, the power output by the PTO motor is also transmitted to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work.
Further, the dual-motor coupling driving rotary tillage mode comprises a coupling driving tractor rotary tillage mode and a coupling driving tractor rotary tillage running mode; when the coupling driving tractor is in a rotary tillage mode, the PTO motor and the driving motor both output power, the power output by the PTO motor is transmitted to the second planetary gear assembly through the second power input shaft, the power output by the driving motor is transmitted to the second planetary gear assembly through the first power input shaft, the first synchronizer and the second synchronizer, the power output by the PTO motor and the power output by the driving motor are coupled through the second planetary gear and are transmitted to the second power output shaft, and the second power output shaft drives the rotary tillage mechanism to work; when the coupling driving tractor is in a rotary tillage running mode, both the PTO motor and the driving motor output power, the power output by the PTO motor is transmitted to the second planetary gear assembly through the second power input shaft, the power output by the driving motor is transmitted to the second planetary gear assembly through the first power input shaft, the first synchronizer and the second synchronizer, the power output by the PTO motor and the power output by the driving motor are coupled through the second planetary gear and are transmitted to the second power output shaft, the second power output shaft drives the rotary tillage mechanism to work, the power output by the driving motor is further transmitted to the first power output shaft through the first power input shaft and the first planetary gear assembly, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels.
According to the power coupling device of the electric tractor driven by the double motors, the driving motor and the PTO motor are arranged at the same side of the electric tractor, so that various driving modes can be realized: firstly, the power provided by a driving motor drives a tractor to run through a first planetary gear assembly; the power provided by the PTO motor drives the rotary tillage mechanism to work through the second planetary gear assembly. And secondly, the power provided by the PTO motor is coupled with the power provided by the driving motor through the first synchronizer and the second synchronizer, and then the tractor is driven to run. And thirdly, the power provided by the driving motor is coupled with the power provided by the PTO motor through the first synchronizer and the second synchronizer in the second planetary gear assembly to drive the rotary tillage mechanism to work.
The invention has the beneficial effects that: the invention relates to a power coupling device of a double-motor driven electric tractor, which adopts a driving motor and a PTO motor as double power sources and can realize the operation of multiple working modes such as a double-motor independent driving mode, a double-motor coupling driving tractor running mode, a double-motor coupling driving tractor rotary tillage mode and the like. The invention reasonably utilizes the output power of the motor, improves the utilization rate of the motor, enlarges the high-efficiency area range of the output power, and simultaneously can improve the adaptability of the electric tractor to the working environment. In addition, the coupling structure is optimized, so that the size of the coupling device is reduced, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the power coupling mechanism.
Wherein, each mark in the figure is: 1-a first inverter; 2-driving the motor; 3-a complete machine controller; 4-a power coupling mechanism; 5-a transmission mechanism; 6-driving wheels; 7-a rotary tillage mechanism; an 8-PTO motor; 9-a second inverter; 10-a power cell; 11-a first transmission gear; 12-a first brake; 13-a first ring gear; 14-a first planet; 15-a first planet carrier; 16-a first sun gear; 17-a first power take-off shaft; 18-a second planet wheel; 19-a second planet carrier; 20-a second sun gear; 21-a second power take-off shaft; 22-a second brake; 23-a second ring gear; 24-a sixth transfer gear; 25-a second synchronizer; 26-a fifth transfer gear; 27-a second transmission gear; 28-a second power input shaft; 29-a fourth transmission gear; 30-an intermediate shaft; 31-a first synchronizer; 32-a third drive gear; 33-first power input shaft.
Detailed Description
In order that those skilled in the art will be able to better understand the technical solutions provided by the present invention, the following description is provided in connection with specific embodiments.
Fig. 1 is a schematic structural view of the present invention, and the power coupling device for a dual-motor driven electric tractor according to the present invention includes: the power transmission system comprises a driving motor 2, a PTO motor 8, a first inverter 1 and a second inverter 9 for controlling the driving motor 2 and the PTO motor 8, a whole machine controller 3 and a power battery 10 which are connected with the two inverters, a power coupling mechanism 4 connected with double motors, a transmission mechanism 5 and a rotary tillage mechanism 7 which are respectively connected with the power coupling mechanism 4 at the right end, and a driving wheel 6 connected with the transmission mechanism 5.
Wherein the drive motor 2 and the PTO motor 8 are arranged on the same side and powered by a power battery 10. The power battery 10 is controlled by the complete machine controller 3 to output low-voltage direct current, the low-voltage direct current is converted into high-voltage alternating current through the first inverter 1 to drive the motor 2 to rotate, and the low-voltage direct current is converted into high-voltage alternating current through the second inverter 9 to drive the PTO motor 8 to rotate. The power provided by the double motors is respectively output to the transmission mechanism 5 and the rotary tillage mechanism 7 through the power coupling mechanism 4, thereby realizing the work of the tractor.
Fig. 2 is a schematic structural diagram of a power coupling mechanism, where the power coupling mechanism 4 includes: a first power input shaft 33, a first transmission gear 11 on the first power input shaft 33, a second power input shaft 28, a second transmission gear 27 on the second power input shaft 28, a first planet carrier 15, a first sun gear 16, a first planet gear 14, a first ring gear 13 and a first brake 12 on the first planetary gear assembly, a second planet carrier 19, a second sun gear 20, a second planet gear 18, a second ring gear 23 and a second brake 22 on the second planetary gear assembly, a first power output shaft 17 connected with the first planet carrier 15, a second power output shaft 21 connected with the second planet carrier 19, an intermediate shaft 30, a third transmission gear 32, a first synchronizer 31, a fourth transmission gear 29, a fifth transmission gear 26, a second synchronizer 25 and a sixth transmission gear 24 on the intermediate shaft.
Wherein, the first power input shaft 33 is arranged in parallel with the second power input shaft 28, the first synchronizer 31 is positioned between the third transmission gear 32 and the fourth transmission gear 29, the second synchronizer 25 is positioned between the fifth transmission gear 26 and the sixth transmission gear 24, the first transmission gear 11 is meshed with the third transmission gear 32, the second transmission gear 27 is meshed with the fourth transmission gear 29, the external teeth of the first gear ring 13 are meshed with the sixth transmission gear 24, and the external teeth of the second gear ring 23 are meshed with the fifth transmission gear 26. Based on the device, the power provided by the driving motor 2 can drive the tractor to run through the first planetary gear assembly. The power provided by the PTO motor 8 can independently drive the rotary tillage mechanism 7 to work through the second planetary gear assembly; the power provided by the driving motor 2 can be transmitted through the first synchronizer 31 and the second synchronizer 25, and is coupled with the power provided by the PTO motor 8 through the second planetary gear assembly to jointly drive the rotary tillage mechanism 7 to work; similarly, the power provided by the PTO motor 8 can be transmitted through two synchronizers, and the power provided by the drive motor 2 and the first planetary gear assembly are coupled to drive the tractor to run together.
Wherein the first synchronizer 31, the second synchronizer 25, the first brake 12 and the second brake 22 are used for realizing the switching among various working modes of the multi-mode coupling transmission device of the electric tractor. The combination state is shown in table 1, in the table, the symbol "M" indicates that the motor is in the working state, "C" indicates that the motor is in the non-working state, "1" indicates that the brake is in the braking state, and "0" indicates that the brake is in the separation state. "L" indicates synchronizer left engaged, "R" indicates synchronizer right engaged, and "S" indicates synchronizer not engaged.
The working modes of the power coupling device of the electric tractor are as follows:
the working principle is as follows:
the dual-motor independent driving mode is divided into three modes: an independent drive tractor running mode, an independent drive tractor rotary tillage mode and an independent drive tractor running rotary tillage mode.
When the tractor is in the independent drive tractor running mode when only running, the drive motor 2 works, the PTO motor 8 does not work, the first synchronizer 31 and the second synchronizer 25 are not engaged, the first brake 12 brakes, and the second brake 22 does not brake, at this time, the power provided by the drive motor 2 passes through the first power input shaft 33, the first sun gear 16, the first planet gear 14 and the first planet carrier 15, and is output by the first power output shaft 17, and the tractor is driven to run.
When the tractor is in a rotary tillage mode of the independent drive tractor when only rotary tillage operation is performed, the drive motor 2 does not work, the PTO motor 8 works, the first synchronizer 31 and the second synchronizer 25 are not engaged, the first brake 12 is not braked, and the second brake 22 is braked, at the moment, power provided by the PTO motor 8 passes through the second power input shaft 28, the second sun gear 20, the second planet gear 19 and the second planet carrier 19, and then is output by the second power output shaft 21 to drive the rotary tillage mechanism 7 to work.
When the tractor runs and carries out rotary tillage operation, the tractor runs and is in a rotary tillage mode, the driving motor 2 works, the PTO motor 8 works, the first synchronizer 31 and the second synchronizer 25 are not engaged, the first brake 12 brakes and the second brake 22 brakes, and at the moment, power provided by the driving motor 2 passes through the first power input shaft 33, the first sun gear 16, the first planet gear 14 and the first planet carrier 15 and is output by the first power output shaft 17 to drive the tractor to run. Meanwhile, the power provided by the PTO motor 8 passes through the second power input shaft 28, the second sun gear 20, the second planet gear 19 and the second planet carrier 19, and then is output by the second power output shaft 21 to drive the rotary tillage mechanism 7 to work.
The dual-motor coupling driving mode is divided into two modes: a coupling driving tractor running mode and a coupling driving tractor running rotary tillage mode.
When the tractor is in the coupling drive tractor running mode when running only, the drive motor 8 is operated, the PTO motor 2 is operated, the first synchronizer 31 and the second synchronizer 25 are simultaneously engaged with the fourth transmission gear 29 and the sixth transmission gear 24 to the right, the first brake 12 is not braked, and the second brake 22 is not braked. At this time, the power provided by the driving motor 2 is input to the first planetary gear assembly through the first power input shaft 33 and the first sun gear 16. The power provided by the PTO motor is input to the first planetary gear assembly through the second power input shaft 28, the second transmission gear 27, the fourth transmission gear 29, the intermediate shaft 30, the sixth transmission gear 24 and the first ring gear 13, and the first planetary gear assembly couples the power and outputs the power through the first power output shaft 17 to drive the tractor to run.
When the tractor runs and carries out rotary tillage, the rotary tillage mode of driving the tractor to run is adopted, the driving motor 8 works, the PTO motor 2 works, the first synchronizer 31 and the second synchronizer 25 are simultaneously engaged to the right respectively at the fourth transmission gear 29 and the sixth transmission gear 24, the first brake 12 is not braked, and the second brake 22 is braked. At this time, the power provided by the driving motor 2 is input to the first planetary gear assembly through the first power input shaft 33 and the first sun gear 16. On one hand, the power provided by the PTO motor is input to a first planetary gear assembly through a second power input shaft 28, a second transmission gear 27, a fourth transmission gear 29, an intermediate shaft 30, a sixth transmission gear 24 and the first gear ring 13, and the first planetary gear assembly couples the power and outputs the power through a first power output shaft 17 to drive the tractor to run. On the other hand, the power is output from the second power output shaft 21 after passing through the second power input shaft 28, the second sun gear 20, the second planetary gear 18, and the second planetary carrier 19, and drives the rotary tillage mechanism 7 to work.
The rotary tillage mode is driven by the coupling of two motors, and the mode is divided into two modes: a coupling driving tractor rotary tillage mode and a coupling driving tractor rotary tillage running mode.
When the tractor is in a coupling drive tractor rotary tillage mode when only rotary tillage operation is performed, the drive motor 8 is operated, the PTO motor 2 is operated, the first synchronizer 31 and the second synchronizer 25 are simultaneously engaged to the left in the third transmission gear 32 and the fifth transmission gear 26, the first brake 12 is not braked, and the second brake 22 is not braked. At this time, the power provided by the PTO motor 8 is input into the second planetary gear assembly through the second power input shaft 28 and the second sun gear 20, the power provided by the driving motor 2 is input into the second planetary gear assembly through the first power input shaft 33, the first transmission gear 11, the third transmission gear 32, the intermediate shaft 30, the fifth transmission gear 26 and the second gear ring 23, and the second planetary gear assembly couples the power and then outputs the power through the second power output shaft 21 to drive the rotary tillage mechanism 7 to work.
When the tractor runs and works in rotary tillage, the tractor is in a rotary tillage running mode of the coupling drive tractor, the drive motor 8 works, the PTO motor 2 works, the first synchronizer 31 and the second synchronizer 25 are simultaneously engaged with the third transmission gear 32 and the fifth transmission gear 26 to the left, the first brake 12 is braked, and the second brake 22 is not braked. At this time, the power provided by the PTO motor 8 is input to the second planetary gear assembly through the second power input shaft 28, the second sun gear 20 and the second planetary gear assembly, the power provided by the driving motor 2 is input to the second planetary gear assembly through the first power input shaft 33, the first transmission gear 11, the third transmission gear 32, the intermediate shaft 30, the fifth transmission gear 26 and the second gear ring 23, and the second planetary gear assembly couples the power and outputs the power through the second power output shaft 21 to drive the rotary tillage mechanism 7 to work. On the other hand, the power of the driving motor 2 passes through the first power input shaft 32, the first sun gear 16, the first planetary gear 14 and the first carrier 15 and is output by the first power output shaft 17, so that the tractor is driven to run.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a bi-motor drive's electric tractor power coupling device which characterized in that: the power transmission device comprises a power battery, a complete machine controller connected with the power battery, a first inverter and a second inverter connected with the complete machine controller, a driving motor and a PTO motor respectively connected with the first inverter and the second inverter, a power coupling mechanism connected with the driving motor and the PTO motor, a transmission mechanism and a rotary tillage mechanism connected with the power coupling mechanism, and a driving wheel connected with the transmission mechanism;
the power coupling device comprises a first power input shaft, a first transmission gear connected with the first power input shaft, a second transmission gear connected with the second power input shaft, a first planetary gear assembly, a second planetary gear assembly, a first power output shaft, a second power output shaft, an intermediate shaft, a third transmission gear, a first synchronizer, a fourth transmission gear, a fifth transmission gear, a second synchronizer and a sixth transmission gear; the first planetary gear assembly comprises a first planet carrier, a first sun gear, a first planet gear, a first gear and a first brake, and is connected with the first power output shaft through the first planet carrier; the second planetary gear assembly comprises a second planet carrier, a second sun gear, a second planet gear, a second gear ring and a second brake, and is also connected with the second power output shaft through the second planet carrier; the intermediate shaft is connected with the third transmission gear, the first synchronizer, the fourth transmission gear, the fifth transmission gear, the second synchronizer and the sixth transmission gear.
2. The power coupling device of a dual motor driven electric tractor according to claim 1, wherein: the driving motor and the PTO motor are arranged on one side of the power coupling mechanism, and the transmission mechanism and the rotary tillage mechanism are arranged on the other side of the power coupling mechanism; the first power input shaft and the second power input shaft are parallel to each other, and the power provided by the driving motor and the PTO motor is further output to the transmission mechanism and the rotary tillage mechanism through the power coupling mechanism.
3. The power coupling device of a dual motor driven electric tractor according to claim 1, wherein: the first planetary gear assembly and the second planetary gear assembly are symmetrically arranged, the first brake is connected with the first gear ring, the second brake is connected with the second gear ring, the first synchronizer is arranged between the third transmission gear and the fourth transmission gear, the second synchronizer is arranged between the fifth transmission gear and the sixth transmission gear, and the first synchronizer and the second synchronizer are further connected with the intermediate shaft.
4. The power coupling device of a dual motor driven electric tractor according to claim 1, wherein: the first transmission gear is meshed with the third transmission gear, the second transmission gear is meshed with the fourth transmission gear, the outer teeth of the first gear ring are meshed with the sixth transmission gear, and the outer teeth of the second gear ring are meshed with the fifth transmission gear.
5. The power coupling device of a dual motor driven electric tractor according to claim 1, wherein: the power coupling device further realizes the switching of a double-motor independent driving mode, a double-motor coupling driving running mode and a double-motor coupling driving rotary tillage mode through the first synchronizer, the second synchronizer, the first brake and the second brake.
6. The power coupling device of a dual motor driven electric tractor according to claim 5, wherein: the double-motor independent driving mode comprises an independent driving tractor running mode, an independent driving tractor rotary tillage mode and an independent driving tractor running rotary tillage mode; when the tractor is in the independent driving tractor running mode, the driving motor outputs power and transmits the power to the first power output shaft through the first power input shaft and the first planetary gear assembly, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels; when the tractor is in a rotary tillage mode of an independent driving tractor, the PTO motor outputs power and transmits the power to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work; when the tractor is in a rotary tillage mode for driving the tractor to run, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first power output shaft through the first power input shaft and the first planetary gear assembly, the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheel, the power output by the PTO motor is transmitted to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work.
7. The power coupling device of a dual motor driven electric tractor according to claim 5, wherein: the dual-motor coupling driving mode comprises a coupling driving tractor driving mode and a coupling driving tractor driving rotary tillage mode; when the coupling driving tractor runs, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first planetary gear assembly through the first power input shaft, the power output by the PTO motor is transmitted to the first planetary gear assembly through the second power input shaft, the first synchronizer and the second synchronizer, the power output by the driving motor and the power output by the PTO motor are coupled with the first planetary gear assembly and transmitted to the first power output shaft, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels; when the coupling driving tractor runs in a rotary tillage mode, the driving motor and the PTO motor both output power, the power output by the driving motor is transmitted to the first planetary gear assembly through the first power output shaft, the power output by the PTO motor is transmitted to the first planetary gear assembly through the second power input shaft, the first synchronizer and the second synchronizer, the power output by the driving motor and the power output by the PTO motor are coupled with the first planetary gear assembly and are transmitted to the first power output shaft, the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels, the power output by the PTO motor is also transmitted to the second power output shaft through the second power input shaft and the second planetary gear assembly, and the second power output shaft drives the rotary tillage mechanism to work.
8. The power coupling device of a dual motor driven electric tractor according to claim 5, wherein: the dual-motor coupling driving rotary tillage mode comprises a coupling driving tractor rotary tillage mode and a coupling driving tractor rotary tillage running mode; when the coupling driving tractor is in a rotary tillage mode, the PTO motor and the driving motor both output power, the power output by the PTO motor is transmitted to the second planetary gear assembly through the second power input shaft, the power output by the driving motor is transmitted to the second planetary gear assembly through the first power input shaft, the first synchronizer and the second synchronizer, the power output by the PTO motor and the power output by the driving motor are coupled through the second planetary gear and are transmitted to the second power output shaft, and the second power output shaft drives the rotary tillage mechanism to work; when the coupling driving tractor is in a rotary tillage running mode, both the PTO motor and the driving motor output power, the power output by the PTO motor is transmitted to the second planetary gear assembly through the second power input shaft, the power output by the driving motor is transmitted to the second planetary gear assembly through the first power input shaft, the first synchronizer and the second synchronizer, the power output by the PTO motor and the power output by the driving motor are coupled through the second planetary gear and are transmitted to the second power output shaft, the second power output shaft drives the rotary tillage mechanism to work, the power output by the driving motor is further transmitted to the first power output shaft through the first power input shaft and the first planetary gear assembly, and the first power output shaft drives the tractor to run through the transmission mechanism and the driving wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712919.9A CN111775723B (en) | 2020-07-22 | 2020-07-22 | Dual-motor driven electric tractor power coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712919.9A CN111775723B (en) | 2020-07-22 | 2020-07-22 | Dual-motor driven electric tractor power coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111775723A true CN111775723A (en) | 2020-10-16 |
| CN111775723B CN111775723B (en) | 2022-08-30 |
Family
ID=72763835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010712919.9A Active CN111775723B (en) | 2020-07-22 | 2020-07-22 | Dual-motor driven electric tractor power coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111775723B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0329807D0 (en) * | 2003-12-23 | 2004-01-28 | Agco Gmbh & Co | Drive and control method for a vehicle |
| JP2013100060A (en) * | 2011-11-09 | 2013-05-23 | Daimler Ag | Hybrid vehicle control device |
| KR20170058164A (en) * | 2015-11-18 | 2017-05-26 | 대동공업주식회사 | Electric agriculture vehicle |
| US20180099561A1 (en) * | 2016-10-10 | 2018-04-12 | Nio Nextev Limited | Power coupling system for electric vehicle, electric vehicle having the same and control method thereof |
| CN108544910A (en) * | 2018-04-03 | 2018-09-18 | 河南科技大学 | A kind of dual-motor electric tractor dynamic power transmission device |
| CN111016642A (en) * | 2020-01-14 | 2020-04-17 | 河南科技大学 | Multi-mode coupling transmission device of electric tractor and control system thereof |
-
2020
- 2020-07-22 CN CN202010712919.9A patent/CN111775723B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0329807D0 (en) * | 2003-12-23 | 2004-01-28 | Agco Gmbh & Co | Drive and control method for a vehicle |
| JP2013100060A (en) * | 2011-11-09 | 2013-05-23 | Daimler Ag | Hybrid vehicle control device |
| KR20170058164A (en) * | 2015-11-18 | 2017-05-26 | 대동공업주식회사 | Electric agriculture vehicle |
| US20180099561A1 (en) * | 2016-10-10 | 2018-04-12 | Nio Nextev Limited | Power coupling system for electric vehicle, electric vehicle having the same and control method thereof |
| CN108544910A (en) * | 2018-04-03 | 2018-09-18 | 河南科技大学 | A kind of dual-motor electric tractor dynamic power transmission device |
| CN111016642A (en) * | 2020-01-14 | 2020-04-17 | 河南科技大学 | Multi-mode coupling transmission device of electric tractor and control system thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李同辉等: "电动拖拉机双电机耦合驱动系统传动特性研究", 《农业机械学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111775723B (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103587396A (en) | Power-driven automobile double-motor coupling drive system | |
| CN209008383U (en) | Power dividing hybrid power coupled system and vehicle | |
| CN105172572B (en) | Four-wheel drive hybrid vehicle and its power drive system | |
| CN203793111U (en) | Hybrid power driving system and power coupler | |
| CN207809036U (en) | Hybrid electric drive system and vehicle | |
| CN207809032U (en) | Hybrid electric drive system and vehicle | |
| CN207809033U (en) | Hybrid electric drive system and vehicle | |
| CN108215764B (en) | Single-planet-row multi-mode hybrid power transmission system | |
| CN208867853U (en) | Two gear hybrid power coupled systems and vehicle | |
| CN208180761U (en) | Hybrid electric drive system and vehicle | |
| CN106671766B (en) | Plug-in hybrid electric vehicle transmission system | |
| CN109228842B (en) | Driving system of hybrid electric vehicle | |
| CN107571730B (en) | A kind of power coupler and its operational mode for hybrid vehicle | |
| CN113665353A (en) | Dual-motor coupling driving system | |
| CN111016642B (en) | Multi-mode coupling transmission device of electric tractor and control system thereof | |
| CN202732865U (en) | Two-speed automatic transmission used for electric vehicle | |
| CN109203972B (en) | Transmission device of double-motor hybrid power system | |
| CN207809042U (en) | Power-driven system and vehicle | |
| CN203543619U (en) | Double-motor coupling drive system of electric car | |
| CN106671767B (en) | Plug-in hybrid electric vehicle power assembly | |
| CN106585361B (en) | Power assembly of hybrid electric vehicle | |
| CN212073676U (en) | Electric tractor multi-mode coupling transmission device based on double planet rows | |
| CN111775723B (en) | Dual-motor driven electric tractor power coupling device | |
| CN204123949U (en) | Hybrid power transmission system and use the vehicle of this transmission system | |
| CN110525196A (en) | Series-Parallel HEV transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |