CN115946526A - Double-motor coupling transmission device, control method and power transmission machine - Google Patents
Double-motor coupling transmission device, control method and power transmission machine Download PDFInfo
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Abstract
The invention provides a double-motor coupling transmission device, a control method and power transmission machinery, wherein the double-motor coupling transmission device comprises an input assembly, an output assembly, a transmission gear set and a control unit; the input assembly comprises a first motor and a second motor; the output assembly comprises a first output shaft connected with the running mechanism and a second output shaft connected with the power output mechanism; the transmission gear set is in transmission connection with the input assembly and the output assembly and is provided with a gear shifting mechanism for controlling the power output direction; the control unit is electrically connected with the gear shifting mechanism and can control the gear shifting mechanism to be combined with or separated from the transmission gear set according to a required working mode so as to selectively output the transmission power of the first motor and/or the second motor to the first output shaft and/or the second output shaft. This application is according to required mode, corresponds the connection status who selects gearshift and drive gear group to make the corresponding power of output, thereby improved the utilization ratio of motor, simplified the structure and improved whole transmission efficiency.
Description
Technical Field
The invention belongs to the technical field of power transmission, and particularly relates to a double-motor coupling transmission device, a control method and a power transmission machine.
Background
At present, most tractors in the market still use a diesel engine as a power source, and the traditional diesel tractor and a manual gearbox are used as a power transmission chain, so that the noise is high, the gear shifting impact is high, the efficiency is low, the environment is seriously polluted, and the operation intensity of a driver is high. The electric tractor uses the electric energy to drive the vehicle, compares traditional diesel tractor, and the electric tractor has advantages such as low emission, clean pollution-free, low noise and energy utilization rate height, through bi-motor power coupling device, can realize unpowered interrupt and shift, is showing improvement travelling comfort. However, the common double-motor power coupling device usually adopts two sets of rotating speed coupling devices and double-acting clutches, and has a complex structure and low transmission efficiency.
Disclosure of Invention
The invention mainly aims to provide a double-motor coupling transmission device, a control method and power transmission machinery, and aims to solve the technical problems that the double-motor coupling transmission device in the prior art is complex in structure and low in transmission efficiency.
In order to achieve the above object, the present invention provides a dual-motor coupling transmission device applied to a power transmission machine, the power transmission machine including a running mechanism and a power output mechanism, the dual-motor coupling transmission device including:
the input assembly comprises a first motor and a second motor;
the output assembly comprises a first output shaft connected with the running mechanism and a second output shaft connected with the power output mechanism;
the transmission control assembly is used for controlling the transmission ratio of the transmission intermediate shaft;
the transmission gear set is in transmission connection with the input assembly and the output assembly, and a gear shifting mechanism for controlling the power output direction is arranged on the transmission gear set; and
a control unit electrically connected with the shift mechanism and configured to:
acquiring a working mode required by the power transmission machinery;
and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required work mode so as to selectively output the transmission power of the first motor and/or the second motor to the first output shaft and/or the second output shaft.
In an embodiment of the invention, the transmission control assembly comprises a planetary gear set arranged between the transmission intermediate shaft and the first output shaft and a mode selection member, and the mode selection member is combined with or separated from the planetary gear set for controlling the transmission ratio of the transmission intermediate shaft.
In the embodiment of the invention, the second output shaft and the first input shaft are in transmission connection, and a clutch is arranged between the second output shaft and the first input shaft.
In an embodiment of the present invention, the input assembly includes a first input shaft connected to the first motor and a second input shaft connected to the second motor;
the second input shaft is rotatably and coaxially sleeved outside the first input shaft;
or the like, or, alternatively,
the first input shaft and the second input shaft are not arranged coaxially and independently.
In an embodiment of the present invention, a shift mechanism includes:
the first gear shifting transmission part is arranged on the first input shaft and is used for controlling the transmission connection or disconnection of the first input shaft and the first output shaft; and
and the second gear shifting transmission part is arranged on the second input shaft and is used for controlling the transmission connection or disconnection of the second input shaft and the first output shaft.
In an embodiment of the invention, the dual-motor coupling transmission device further comprises a transmission intermediate shaft in transmission connection with the first output shaft, the transmission gear set comprises a first gear set and a second gear set, the first gear set comprises a first driving gear, a first driven gear and a second driving gear, and the second gear set comprises a third driving gear, a second driven gear and a fourth driving gear; the first driving gear and the third driving gear are sequentially arranged on the first input shaft along the power transmission direction, the first driven gear and the second driven gear are sequentially arranged on the transmission intermediate shaft along the power transmission direction, the second driving gear and the fourth driving gear are sequentially arranged on the second input shaft along the power transmission direction, the first gear shifting transmission part is arranged between the first driving gear and the third driving gear, and the second gear shifting transmission part is arranged between the second driving gear and the fourth driving gear.
In an embodiment of the present invention, the dual-motor coupling transmission further includes a transmission intermediate shaft in transmission connection with the first output shaft, and the shift mechanism includes:
the second gear shifting transmission part is used for controlling the transmission connection or disconnection of the first input shaft and the first output shaft; and
and the first gear shifting transmission part is used for controlling the transmission connection or disconnection of the second input shaft and the first output shaft.
In an embodiment of the present invention, the transmission gear set includes a first gear set and a second gear set, the first gear set includes a first driving gear and a first driven gear that are sequentially engaged, the second gear set includes a second driving gear and a second driven gear that are sequentially engaged, the first driving gear is disposed on the second input shaft, the second driving gear is disposed on the first input shaft, the first driven gear and the second driven gear are sequentially sleeved on the transmission intermediate shaft along the power transmission direction, the first shift transmission member is used for switching and controlling the transmission connection between the first driven gear and the transmission intermediate shaft, and the second shift transmission member is used for switching and controlling the transmission connection between the second driven gear and the transmission intermediate shaft.
In an embodiment of the present invention, the mode selection member is one of a mode selection synchronizer or a friction clutch.
In an embodiment of the present invention, a dual-motor coupling transmission control method is further provided, which is applied to the dual-motor coupling transmission device described above, and the dual-motor coupling transmission control method includes:
acquiring a working mode required by the power transmission machinery;
and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required work mode so as to selectively output the transmission power of the first motor and/or the second motor to the first output shaft and/or the second output shaft.
In an embodiment of the present invention, the step of controlling the gearshift mechanism to be coupled with or decoupled from the transmission gear set according to a desired operation mode to selectively output the transmission power of the first motor and/or the second motor to the first output shaft and/or the second output shaft comprises:
when the required working mode is a ploughing mode, the clutch is controlled to be disengaged, the mode selection synchronizer is disconnected with the planetary gear train, and the transmission power of the first motor and the transmission power of the second motor are controlled to be simultaneously output to the first output shaft;
when the required working mode is a rotary tillage light-load mode, the clutch is controlled to be combined, the mode selection synchronizer is disconnected with the planetary gear train, the first motor is controlled to output transmission power to the second output shaft, and the second motor outputs the transmission power to the first output shaft;
when the required working mode is a rotary tillage heavy-load mode, the clutch is controlled to be combined, the mode selection synchronizer is disconnected with the planetary gear train, the first motor is controlled to output transmission power to the second output shaft, and the second motor simultaneously outputs the transmission power to the first output shaft and the second output shaft;
when the required working mode is a transition mode, the clutch is controlled to be disengaged, the mode selection synchronizer is combined with the planetary gear train, and the first motor and/or the second motor are controlled to output transmission power to the first output shaft.
In addition, in the embodiment of the invention, the power transmission machine is also provided, and the power transmission machine comprises the double-motor coupling transmission device.
Through the technical scheme, the double-motor coupling transmission device provided by the embodiment of the invention has the following beneficial effects:
a transmission gear set is connected between the input assembly and the output assembly in a transmission way, so that the power transmission from the input assembly to the output assembly is ensured; meanwhile, when the agricultural machinery works, firstly, the control unit acquires the working mode required by the agricultural machinery; and then controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required working mode so as to selectively output the transmission power of the first motor and/or the second motor to the first output shaft and/or the second output shaft. And a transmission control component for controlling the transmission ratio of the transmission intermediate shaft is arranged between the transmission intermediate shaft and the first output shaft so as to realize multi-gear switching output of the first output shaft. This application is through in the power transmission in-process, can be according to the required mode of tractor, the connection status of selection gearshift and drive gear group corresponds to make the corresponding power of output, and use in step through transmission control assembly and gearshift, thereby the utilization ratio of motor has been improved, and complicated rotational speed coupling device has been omitted, it strikes to show the shift that reduces the gear shift in-process, make the gear shift more smooth-going, improved transmission efficiency.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of a transmission structure of a two-motor coupling transmission according to a first embodiment of the present invention;
fig. 2 is a schematic view of a transmission structure of a dual-motor coupling transmission according to a second embodiment of the present invention.
Description of the reference numerals
| Reference numerals | Name(s) | Reference numerals | Name (R) |
| 10 | |
52 | Second gear |
| 11 | |
60 | First gear set |
| 20 | Second electric machine | 61 | A first driving gear |
| 21 | |
62 | First driven |
| 30 | |
63 | The |
| 31 | |
70 | |
| 32 | Running gear | 71 | |
| 33 | |
72 | Second driven |
| 34 | Power take- |
73 | The |
| 40 | |
80 | |
| 50 | Transmission |
81 | |
| 51 | First shift transmission member |
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
The common double-motor power coupling device in the prior art adopts two sets of coupling devices and double-acting clutches in some cases and adopts a multi-planet-row power coupling device in some cases, and the power coupling of the structure is not only complex in structure, but also long in transmission chain due to the fact that a plurality of components are adopted for power transmission, and the reliability of integral transmission is reduced.
In view of the above, the present application provides a dual-motor coupling transmission device, a control method and a power transmission machine according to the description with reference to the drawings.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, a dual-motor coupling transmission device is provided, which is applied to power transmission machinery such as agricultural machinery, for example: a tractor or a vehicle adopting the same structure with the tractor; the agricultural machine comprises a running mechanism 32 for driving the whole vehicle to run and a power output mechanism 34 capable of field farming, and the double-motor coupling transmission device comprises:
an input assembly including a first motor 10 and a second motor 20;
an output assembly 30 including a first output shaft 31 connected to a running mechanism 32 and a second output shaft 33 connected to a power output mechanism 34;
the transmission gear set is in transmission connection with the input assembly and the output assembly 30, and a gear shifting mechanism for controlling the power output direction is arranged on the transmission gear set; and
a control unit electrically connected with the shift mechanism and configured to:
acquiring a working mode required by the agricultural machine;
and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required work mode so as to selectively output the transmission power of the first motor 10 and/or the second motor 20 to the first output shaft 31 and/or the second output shaft 33.
The transmission gear set is arranged to play a role of connecting the input assembly and the output assembly 30 in the middle, so that power transmission from the input assembly to the output assembly 30 is ensured; meanwhile, the control gear shifting mechanism is arranged on the transmission gear set, and in the power transmission process, the connection state of the gear shifting mechanism and the transmission gear set can be correspondingly selected according to the working mode required by the tractor, so that corresponding power is output, the utilization rate of the motor is improved, a complex rotating speed coupling device is omitted, the whole transmission efficiency is improved, and energy is saved.
In order to adapt to different working requirements: the second output shaft 33 is in transmission connection with the first input shaft 11, and a clutch 40 is arranged between the second output shaft and the first input shaft. Compared with the double-acting clutch 40 structure adopted in the prior art, the power transmission of the first input shaft 11 and the second output shaft 33 can be cut off or communicated by adopting one clutch 40, the structure for controlling the power is simplified, and when the power is transmitted to the power output mechanism 34, the first input shaft 11 is directly input and connected with the second output shaft 33, so that the transmission efficiency is improved.
In a first embodiment of the present invention, as shown in fig. 1, the input assembly includes a first input shaft 11 connected to a first electric machine 10 and a second input shaft 21 connected to a second electric machine 20, and the shift mechanism includes:
a first shift transmission member 51 provided on the first input shaft 11 and controlling transmission connection or disconnection of the first input shaft 11 and the first output shaft 31; and
and a second shift transmission member 52 provided on the second input shaft 21 and controlling the transmission connection or disconnection between the second input shaft 21 and the first output shaft 31.
Compared with two complex sets of rotating speed coupling devices adopted in the prior art, the motor driving device has the advantages that the first gear shifting transmission member 51 and the second gear shifting transmission member 52 can be controlled to work in a high-efficiency area by matching the gear shifting mechanism with the clutch 40, so that the motor works in the high-efficiency area, the working efficiency is high, and the energy digestion is reduced.
In order to better realize the transmission output of the input power of the first input shaft 11 and the second input shaft 21 by the transmission gear set, the double-motor coupling transmission device is further provided with a transmission intermediate shaft 50 in transmission connection with the first output shaft 31, the transmission intermediate shaft 50 plays a role of intermediate series connection, and the transmission gear set connects the first input shaft 11 and the second input shaft 21 with the transmission intermediate shaft 50, namely, the power input by the first input shaft 11 or the second input shaft 21 is transmitted and output through the transmission intermediate shaft 50, so that the input power method (the first input shaft 11 or the second input shaft 21 or both input power at the same time) can be better selected, the power is not interrupted in the gear shifting process, and the driving comfort of agricultural machinery is improved.
The transmission gear set comprises a plurality of gear sets connected in series, specifically, the transmission gear set comprises a first gear set 60 and a second gear set 70, the first gear set 60 comprises a first driving gear 61, a first driven gear 62 and a second driving gear 63, and the second gear set 70 comprises a third driving gear 71, a second driven gear 72 and a fourth driving gear 73; the first driving gear 61 and the third driving gear 71 are sequentially sleeved on the first input shaft 11 in an empty manner along the power transmission direction, the first driven gear 62 and the second driven gear 72 are sequentially and fixedly connected to the transmission intermediate shaft 50 along the power transmission direction, the second driving gear 63 and the fourth driving gear 73 are sequentially sleeved on the second input shaft 21 in an empty manner along the power transmission direction, the first gear shift transmission member 51 is arranged between the first driving gear 61 and the third driving gear 71, and the second gear shift transmission member 52 is arranged between the second driving gear 63 and the fourth driving gear 73. In the gear set structure of this embodiment, the first driving gear 61 or the third driving gear 71 is connected or disconnected with the first input shaft 11 by controlling the connection or disconnection between the first shift transmission member 51 and the first driving gear 61 or the third driving gear 71; the second driving gear 63 or the fourth driving gear 73 is connected or disconnected with the second input shaft 21 by controlling the connection or disconnection between the second shift transmission member 52 and the second driving gear 63 or the fourth driving gear 73. Therefore, the two gear shifting transmission parts are simply arranged on the first input shaft 11 or the second input shaft 21, and the first input shaft 11 and the second input shaft 21 are coupled by adopting the gear set, so that the selection of input power can be controlled, the integral structure is simplified, and the efficiency of intermediate power transmission is improved.
In the second embodiment of the present invention, as shown in fig. 2, the dual-motor coupling transmission device further includes a transmission intermediate shaft 50 in transmission connection with the first output shaft 31, for the coaxial dual motors, the input assembly includes a first input shaft 11 connected with the first motor 10 and a second input shaft 21 connected with the second motor 20, the second input shaft 21 is rotatably sleeved on the outer periphery of the first input shaft 11, and the shift mechanism includes:
a second gear shifting transmission member 52 for controlling the transmission connection or disconnection between the first input shaft 11 and the first output shaft 31; and
and a first gear shifting transmission member 51 for controlling the transmission connection or disconnection of the second input shaft 21 and the first output shaft 31.
In the power system of the coaxial double motors, in order to realize the transmission structure form of the coaxial double motors and to realize the coupling of the double motors, the arrangement forms of the transmission gear set and the gear shifting mechanism need to be adjusted; specifically, the transmission gear set includes a first gear set 60 and a second gear set 70, the first gear set 60 includes a first driving gear 61 and a first driven gear 62 which are engaged in sequence, the second gear set 70 includes a second driving gear 63 and a second driven gear 72 which are engaged in sequence, the first driving gear 61 is disposed on the second input shaft 21, the second driving gear 63 is disposed on the first input shaft 11, the first driven gear 62 and the second driven gear 72 are sequentially sleeved on the transmission intermediate shaft 50 along the power transmission direction, the second shift transmission element 52 is used for switching and controlling the transmission connection of the second driven gear 72 and the transmission intermediate shaft 50, and the first shift transmission element 51 is used for switching and controlling the transmission connection of the first driven gear 62 and the transmission intermediate shaft 50.
Preferably, in order to more stably and efficiently realize power transmission, the number of the first gear set 60 and the second gear set 70 is two; and the teeth numbers of the gears of the two first gear sets 60 are different, and the teeth numbers of the gears of the two second gear sets 70 are also different, so as to realize different speed ratios. The first driving gear 61 of the first gear set 60 is fixedly connected to the second input shaft 21 of the second electric motor 20, and the second driving gear 63 of the second gear set 70 is fixedly connected to the first input shaft 11 of the first electric motor 10. The first shifting transmission member 51 is located between the two first driven gears 62, the two first driven gears 62 and the transmission intermediate shaft 50 are shifted through the first shifting transmission member 51, and when the first shifting transmission member 51 is switched to the left position or the right position, the first driven gear 62 on the left side or the first driven gear 62 on the right side is in transmission connection with the transmission intermediate shaft 50, so that the input power of the second input shaft 21 with different gears can be output through the transmission intermediate shaft 50. Similarly, the two second driven gears 72 and the transmission intermediate shaft 50 are selected through the second shifting transmission member 52, and the input power of the first input shaft 11 with different gears is output through the transmission intermediate shaft 50 through the switching position of the second shifting transmission member 52.
In order to ensure that the motors can also be in a high-efficiency working mode when the tractor is in a transition mode, the two-motor coupling transmission device is further provided with a planetary gear train 80 and a mode selection element, wherein the mode selection element can be one of a mode selection synchronizer 81 or a friction clutch, the planetary gear train 80 and the mode selection synchronizer 81 are arranged between the transmission intermediate shaft 50 and the first output shaft 31, and the mode selection synchronizer 81 is combined with or separated from the planetary gear train 80 to control the transmission ratio of the transmission intermediate shaft 50, as shown in fig. 1 or 2. The planetary gear train 80 includes a sun gear fixedly connected to the intermediate transmission shaft 50 and a planet carrier fixedly connected to the first output shaft 31 and connectable to the intermediate transmission shaft 50 through a mode selection synchronizer 81. When the mode selection synchronizer 81 is disconnected from the planet carrier, the transmission ratio of the transmission intermediate shaft 50 is high, when the mode selection synchronizer 81 is combined with the planet carrier, the transmission ratio of the transmission intermediate shaft 50 is low, and in the working process of the agricultural machine, the corresponding transmission ratio can be selected according to the working mode, so that both the first motor 10 and the second motor 20 can work in a high-efficiency area. Furthermore, the first and second shifting transmission members 51 and 52 may be in the form of shift synchronizers or sleeve/pinion shift configurations. This application is through the series connection use of the synchronous ware of shifting gears and mode selection synchronous ware, is showing the gear shift grade difference and the impact of shifting gears that reduces each synchronous ware for the gear shift switches more smoothly.
In an embodiment of the present invention, a dual-motor coupling transmission control method is further provided, which is applied to the dual-motor coupling transmission device described above, and the dual-motor coupling transmission control method includes:
step S10: acquiring a working mode required by the agricultural machine;
step S20: and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required work mode so as to selectively output the transmission power of the first motor 10 and/or the second motor 20 to the first output shaft 31 and/or the second output shaft 33.
According to the power output control method and the power output control device, the power output modes of the first motor 10 and the second motor 20 are selected and controlled according to the working modes required by agricultural machinery, power input energy is fully utilized, power distribution in the power transmission process can be furthest guaranteed, and energy waste is avoided. Meanwhile, the structure is simplified, the matching form of the gear shifting mechanism and the transmission gear set is directly controlled, the purpose of controlling the power output mode is achieved, the power loss of power transmission is reduced, and the reliability of power transmission is improved.
Further, step S20 includes:
(1) When the required working mode is the plowing mode, the control clutch 40 is disengaged, the mode selection synchronizer 81 is disconnected with the planetary gear train, and the first gear shifting transmission member 51 and the second gear shifting transmission member 52 are switched to the left/right positions, so that the transmission power of the first motor 10 and the second motor 20 is simultaneously output to the first output shaft 31;
in the plowing mode, since the mode selection synchronizer 81 is not combined with the planetary carrier, the first motor 10 and the second motor 20 are in torque coupling through the cylindrical gear, so that two power sources of the first motor 10 and the second motor 20 are coupled, and simultaneously, output power is provided for the running mechanism 32, so that the traction force of the running mechanism 32 is improved. The second motor 20 realizes the main control of the speed of the vehicle during traction, and can control the gear shifting synchronizer to select different working gears according to the difference of the plowing speed and the traction requirement. In the plowing process, due to the fact that the traveling resistance of the field is large at the moment, the power input for the traveling mechanism 32 and the power output mechanism 34 is subjected to torque coupling in the mode, the traction force of the tractor can be remarkably improved, the single-motor power requirement is reduced, and the tractor can normally travel in the plowing mode.
(2) Since the rotary tillage mode is divided into a rotary tillage light load mode and a rotary tillage heavy load mode, when the required working mode is the rotary tillage light load mode, the clutch 40 is controlled to be combined, the mode selection synchronizer 81 is disconnected from the planetary gear train, the first motor 10 is controlled to output transmission power to the second output shaft 33, and the second motor 20 outputs the transmission power to the first output shaft 31;
in a rotary tillage light load mode, the power required by rotary tillage is not large at the moment, and the power can be completely provided by the first motor 10 alone, so that in the rotary tillage light load mode, the control unit controls the clutch 40 to be combined, the mode selection synchronizer 81 is not combined with a planet carrier, when the first motor 10 and the second motor 20 are not coaxial, the first gear shifting transmission member 51 is switched to a middle position, a gear which is sleeved on the first input shaft 11 in an idle running state, the input power of the first input shaft 11 is directly and completely transmitted to the second output shaft 33, the first motor 10 directly drives the power output mechanism 34 to take charge of rotary tillage, meanwhile, the second gear shifting transmission member 52 is in a left/right position, and the output power of the second motor is directly and completely transmitted to the first output shaft 31; when the first electric machine 10 and the second electric machine 20 are coaxial, the first shift transmission member 51 is switched to the left position or the right position, and the second shift transmission member 52 is switched to the neutral position.
Specifically, under the condition that the first motor 10 and the second motor 20 are not coaxial, the second input shaft 21 is combined with the second driving gear 63 or the fourth driving gear 73, so that the input power of the second input shaft 21 can be transmitted to the transmission intermediate shaft 50 through the second driving gear 63 or the fourth driving gear 73, and thus transmission power is provided for the first output shaft 31, and the second motor 20 can drive the running mechanism 32 to take charge of vehicle running;
in the case where the first electric motor 10 and the second electric motor 20 are coaxial, the left or right first driven gear 62 is engaged with the transmission intermediate shaft 50, so that the second input shaft 21 is in transmission connection with the transmission intermediate shaft 50, and the input power of the second input shaft 21 can be transmitted to the first output shaft 31 through the transmission intermediate shaft 50.
In the rotary tillage light-load mode, the first motor 10 directly drives the power output mechanism 34 to carry out rotary tillage operation, the second motor 20 drives the vehicle to run, and the power output mechanism 34 is decoupled from the running mechanism 32, so that different running speeds can be realized.
(3) When the required working mode is a rotary tillage heavy-load mode, the clutch 40 is controlled to be combined, the mode selection synchronizer 81 is disconnected with the planetary gear train, the first gear shifting transmission piece 51 and the second gear shifting transmission piece 52 are switched to the left/right positions, so that the first motor 10 outputs transmission power to the second output shaft 33, and the second motor 20 outputs the transmission power to the first output shaft 31 and the second output shaft 33 simultaneously;
in a rotary tillage heavy-load mode, the power required by rotary tillage is larger at the moment, and the rotary tillage power provided by the first motor 10 alone cannot meet the heavy-load requirement, so that in the mode, the control unit controls the clutch 40 to be combined, the first input shaft 11 and the second output shaft 33 are in transmission connection, the mode selection synchronizer 81 is not combined with the planet carrier, the first gear shifting transmission member 51 and the second gear shifting transmission member 52 are in left/right positions, the first motor 10 and the second motor 20 drive the power output mechanism 34 together to be responsible for rotary tillage operation, the second motor 20 drives the vehicle to run, the power output mechanism 34 is coupled with the running mechanism 32, and the tractor runs at a certain fixed speed, so that the normal rotary tillage operation can be ensured under the running power.
Specifically, under the condition that the first motor 10 and the second motor 20 are not coaxial, the first driving gear 61 or the third driving gear 71 is in transmission connection with the first input shaft 11, and the first input shaft 11 can transmit power to the first output shaft 31 while outputting power to the second output shaft 33; meanwhile, the second driving gear 63 or the fourth driving gear 73 is in transmission connection with the second input shaft 21, and the power of the second input shaft 21 can be transmitted to the first input shaft 11 and the second input shaft 21 simultaneously.
In the case of the first electric machine 10 and the second electric machine 20 being coaxial, one of the first driven gears 62 and one of the second driven gears 72 are all in power transmission with the transmission intermediate shaft 50, the power of the first input shaft 11 is directly transmitted to the second output shaft 33, and the power of the second input shaft 21 is transmitted to the first output shaft 31 and the second output shaft 33 under the transmission connection of the gear set.
(4) When the desired operation mode is the transition mode, the control clutch 40 is disengaged, the mode selection synchronizer 81 is engaged with the planetary gear train, both the first shift transmission member 51 and the second shift transmission member 52 are switched to the left/right position, and the first motor 10 and/or the second motor 20 outputs the transmission power to the first output shaft 31.
In the transition mode, the mode selection synchronizer 81 is combined with the planet carrier, and can control the double motors or the single motor to drive the tractor to perform transition work, so that the motors work in a high-efficiency area. The selection of the double motors or the single motor for driving the transition operation is determined according to the opening or closing conditions of the two motors; when the two motors are both switched on, the two motors simultaneously output power to the running mechanism 32 for transition work in a transition mode; when one of the motors is on and the other is off, the on-going motor alone outputs power to the travel mechanism 32 and provides transition operating power.
In summary, in the working mode (rotary tillage and plowing), the mode selection synchronizer 81 is not combined with the planet carrier, and the transmission ratio of the planet gear is large so as to meet the requirement of large torque output in the working mode. In the transition mode, the mode selection synchronizer 81 is combined with the planet carrier, and the transmission ratio of the transmission intermediate shaft 50 is 1, so that the requirement of a high-speed mode under the transition condition is met. By turning on the mode selection synchronizer 81 in the transition mode, shock during shifting is reduced, making shifting smoother.
By using the mode selection synchronizer 81 and the shift synchronizer in series, the shift spread of the shift synchronizer can be significantly reduced. And, this application is according to operation mode power and rotational speed demand of difference, all can be through controlling bi-motor coupling or not coupling, has reduced the power demand of single motor, has improved the utilization ratio of motor, under the same tractor work demand, can choose for use the motor that power is little to satisfy the design requirement, has reduced product cost. The motor can work in a high-efficiency area through a control strategy, the working efficiency is high, and the energy digestion is reduced.
In addition, in the embodiment of the invention, the power transmission machine is also provided, and the power transmission machine comprises the double-motor coupling transmission device. Since the power transmission machine comprises all the embodiments of the dual-motor coupling transmission device, all the beneficial effects brought by the dual-motor coupling device are achieved, and the details are not repeated herein.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A dual-motor coupled transmission for use in a power transmission machine including a running gear (32) and a power take-off (34), the dual-motor coupled transmission comprising:
an input assembly comprising a first motor (10) and a second motor (20);
an output assembly (30) comprising a first output shaft (31) connected to the running gear (32) and a second output shaft (33) connected to the power take-off (34);
the transmission intermediate shaft (50) is in transmission connection with the first output shaft (31), and a transmission control assembly is arranged between the transmission intermediate shaft (50) and the first output shaft (31) and is used for controlling the transmission ratio of the transmission intermediate shaft (50);
the transmission gear set is in transmission connection with the input assembly and the output assembly (30), and a gear shifting mechanism for controlling the power output direction is arranged on the transmission gear set; and
a control unit electrically connected with the shift mechanism and configured to:
acquiring a working mode required by the power transmission machine;
and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to a required working mode so as to selectively output the transmission power of the first motor (10) and/or the second motor (20) to the first output shaft (31) and/or the second output shaft (33).
2. Two-motor-coupled transmission according to claim 1, characterized in that the transmission control assembly comprises a planetary gear set (80) arranged between the transmission intermediate shaft (50) and the first output shaft (31) and a mode selection member, the engagement or disengagement of the mode selection member with the planetary gear set (80) being used to control the transmission ratio of the transmission intermediate shaft (50).
3. The double-motor coupled transmission according to claim 2, characterized in that the second output shaft (33) and the first input shaft (11) are in driving connection with a clutch (40) therebetween.
4. The dual-motor coupled transmission according to claim 2, wherein the input assembly comprises a first input shaft (11) connected to the first motor (10) and a second input shaft (21) connected to the second motor (20);
the second input shaft (21) is rotatably and coaxially sleeved outside the first input shaft (11); or the like, or, alternatively,
the first input shaft (11) and the second input shaft (21) are not arranged coaxially independently.
5. The two-motor coupled transmission of claim 4, wherein the shift mechanism comprises:
the first gear shifting transmission piece (51) is arranged on the first input shaft (11) and is used for controlling the transmission connection or disconnection of the first input shaft (11) and the first output shaft (31); and
and the second gear shifting transmission piece (52) is arranged on the second input shaft (21) and is used for controlling the transmission connection or disconnection of the second input shaft (21) and the first output shaft (31).
6. The dual-motor coupled transmission as claimed in claim 5, wherein the transmission gear set comprises a first gear set (60) and a second gear set (70), the first gear set (60) comprising a first driving gear (61), a first driven gear (62) and a second driving gear (63), the second gear set (70) comprising a third driving gear (71), a second driven gear (72) and a fourth driving gear (73); the first driving gear (61) and the third driving gear (71) are sequentially arranged on the first input shaft (11) along the power transmission direction, the first driven gear (62) and the second driven gear (72) are sequentially arranged on the transmission intermediate shaft (50) along the power transmission direction, the second driving gear (63) and the fourth driving gear (73) are sequentially arranged on the second input shaft (21) along the power transmission direction, the first gear shifting transmission piece (51) is arranged between the first driving gear (61) and the third driving gear (71), and the second gear shifting transmission piece (52) is arranged between the second driving gear (63) and the fourth driving gear (73).
7. The double-motor coupled transmission according to claim 4, wherein the gear shift mechanism comprises, provided on the transmission intermediate shaft (50):
a first gear shifting transmission member (51) for controlling the transmission connection or disconnection of the second input shaft (21) and the first output shaft (31); and
a second gear shifting transmission member (52) for controlling the transmission connection or disconnection of the first input shaft (11) and the first output shaft (31).
8. The dual-motor coupled transmission device according to claim 7, wherein the transmission gear set comprises a first gear set (60) and a second gear set (70), the first gear set (60) comprises a first driving gear (61) and a first driven gear (62) which are sequentially engaged, the second gear set (70) comprises a second driving gear (63) and a second driven gear (72) which are sequentially engaged, the first driving gear (61) is disposed on the second input shaft (21), the second driving gear (63) is disposed on the first input shaft (11), the first driven gear (62) and the second driven gear (72) are sequentially sleeved on the transmission intermediate shaft (50) along a power transmission direction, the first gear shifting transmission member (51) is used for controlling the transmission connection of the first driven gear (62) and the transmission intermediate shaft (50) in a switching manner, and the second gear shifting transmission member (52) is used for controlling the transmission connection of the second driven gear (72) and the transmission intermediate shaft (50) in a switching manner.
9. The dual-motor coupled transmission according to any of claims 2 to 8, wherein the mode selection member is one of a mode selection synchronizer (81) or a friction clutch.
10. A double-motor coupled transmission control method applied to the double-motor coupled transmission device according to any one of claims 1 to 9, the double-motor coupled transmission control method comprising:
acquiring a working mode required by the power transmission machinery;
and controlling the gear shifting mechanism to be combined with or separated from the transmission gear set according to the required working mode so as to selectively output the transmission power of the first motor (10) and/or the second motor (20) to the first output shaft (31) and/or the second output shaft (33).
11. The dual-motor coupled transmission control method according to claim 10, wherein the step of controlling the gear shift mechanism to be engaged with or disengaged from the transmission gear set according to a desired operation mode to selectively output the transmission power of the first motor (10) and/or the second motor (20) to the first output shaft (31) and/or the second output shaft (33) comprises:
when the required working mode is a ploughing mode, controlling the clutch (40) to be disengaged, disconnecting the mode selection synchronizer (81) from the planetary gear train, and switching the first gear shifting transmission piece (51) and the second gear shifting transmission piece (52) to a left/right position so as to simultaneously output the transmission power of the first motor (10) and the second motor (20) to the first output shaft (31);
when the required working mode is a rotary tillage light-load mode, controlling the clutch (40) to be combined, disconnecting the mode selection synchronizer (81) from the planetary gear train, controlling the first motor (10) to output transmission power to the second output shaft (33), and controlling the second motor (20) to output the transmission power to the first output shaft (31);
when the required working mode is a rotary tillage heavy-duty mode, controlling the clutch (40) to be combined, disconnecting a mode selection synchronizer (81) from a planetary gear train, and controlling the first motor (10) to output transmission power to the second output shaft (33), wherein the second motor (20) simultaneously outputs the transmission power to the first output shaft (31) and the second output shaft (33);
when the required working mode is a transition mode, the clutch (40) is controlled to be disengaged, the mode selection synchronizer (81) is combined with the planetary gear train, and the first motor (10) and/or the second motor (20) is controlled to output transmission power to the first output shaft (31).
12. A power transmission machine comprising a two-motor coupled transmission as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013166.6A CN115946526A (en) | 2023-01-05 | 2023-01-05 | Double-motor coupling transmission device, control method and power transmission machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013166.6A CN115946526A (en) | 2023-01-05 | 2023-01-05 | Double-motor coupling transmission device, control method and power transmission machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115946526A true CN115946526A (en) | 2023-04-11 |
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ID=87289268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310013166.6A Pending CN115946526A (en) | 2023-01-05 | 2023-01-05 | Double-motor coupling transmission device, control method and power transmission machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115946526A (en) |
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2023
- 2023-01-05 CN CN202310013166.6A patent/CN115946526A/en active Pending
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