CN110360311A - Tractor hydraulic mechanical type double-clutch automatic gearbox and control method - Google Patents
Tractor hydraulic mechanical type double-clutch automatic gearbox and control method Download PDFInfo
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- CN110360311A CN110360311A CN201910782689.0A CN201910782689A CN110360311A CN 110360311 A CN110360311 A CN 110360311A CN 201910782689 A CN201910782689 A CN 201910782689A CN 110360311 A CN110360311 A CN 110360311A
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- 238000000034 method Methods 0.000 title claims abstract description 9
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Classifications
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
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- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
Abstract
Tractor hydraulic mechanical type double-clutch automatic gearbox, including power primary input axis, fluid torque-converter, load power output shaft, double-clutch automatic gearbox；Power primary input axis accesses fluid torque-converter, fluid torque-converter is equipped with hydraulic control system, double-clutch automatic gearbox includes shell, solid input shaft, hollow input shaft, first and second clutches, main reducing gear, one axis of output shaft and two axis, double-clutch automatic gearbox is equipped with self shifter control system, main reducing gear includes the odd number gear shift gear set and differential mechanism being arranged on solid input shaft, the even number gear shifting gear set being arranged on hollow input shaft and the shifting gear set that reverses gear, differential mechanism includes differential casing, differential gear, main reducing gear drive bevel gear and main reducing gear driven wheel of differential, semiaxis；The self shifter control method that hydraulic mechanical type double-clutch automatic gearbox of the invention is realized can solve the problems, such as interruption of power transmission, guarantee the gentle start of tractor.
Description
Technical field
The present invention relates to mechanical equipment technical fields, certainly more specifically to tractor hydraulic mechanical type double clutch
Dynamic speed changer and control method.
Background technique
Currently, the technology development of automatic transmission is very fast, especially double-clutch automatic gearbox possesses very good
Growth momentum, its technology comparative maturity can preferably solve the problems, such as shifting power Transmission, in recent years
Using also more and more extensive.
Although double-clutch automatic gearbox in the prior art can preferably solve the problems, such as interruption of power transmission,
When being used on the tractor of diesel engine drives, since the applying working condition of tractor is complicated, gear requires more, traction to carry
The reasons such as lotus is larger, for the load power output shaft of tractor, it is desirable that the revolving speed of load power output shaft is only
It can depend on engine crankshaft revolving speed and unrelated with the travel speed of tractor, existing double-clutch automatic gearbox is also not
The demand being able to satisfy under above situation, therefore, it is necessary to a kind of tractor hydraulic mechanical type double-clutch automatic gearbox and controls
Method, fluid torque-converter, which has, to be guaranteed tractor gentle start, the twisting vibration in decaying transmission system, prevents transmission system super
The functions such as load, the shifting speed of double clutch gearbox is very fast, can preferably solve asking for interruption of power transmission
Topic.
Summary of the invention
In view of this, the purpose of the present invention is to provide tractor hydraulic machines to solve above-mentioned the deficiencies in the prior art
Formula double-clutch automatic gearbox, guarantees the gentle start of tractor at the problem of can solve interruption of power transmission.
To achieve the above object, the technical scheme adopted by the invention is that:
Tractor hydraulic mechanical type double-clutch automatic gearbox, including power primary input axis, fluid torque-converter, load power are defeated
Shaft, double-clutch automatic gearbox；
The power primary input axis accesses the fluid torque-converter, and the fluid torque-converter includes converter cover, to double clutches
The torque converter output shaft of device automatic transmission output power, be mounted on the torque converter output shaft slide one-way clutch,
The lock-up clutch being mounted in the torque converter casing body, the pump impeller and the bending moment that are fixedly connected with the converter cover
The turbine and fixed guide wheel that device output shaft is fixedly connected；Load power output shaft is installed on the torque converter output shaft
Driving gear is equipped with the load power engaged with the load power output shaft driving gear on the load power output shaft
Output shaft driven gear；
The double-clutch automatic gearbox include and Output Shaft of Hydraulic Torque Converter transmission connection clutch outer member, solid input
The second of first clutch, control even number gear that axis, the hollow input shaft being set on the solid input shaft, control odd number are kept off
Clutch, two axis of main reducing gear, one axis of output shaft and output shaft, the hollow input shaft be equipped with drive axle input gear, with
And the first output gear and the second output gear engaged；
The main reducing gear includes the odd number gear shift gear set and differential mechanism being arranged on the solid input shaft, and setting
Even number gear shifting gear set on the hollow input shaft and the shifting gear set that reverses gear, the odd number gear shift gear set
One gear shifting gear set of shifting gear set, one gear shifting gear set of underloading and transport, the even number are kept off including heavy duty one
Keeping off shifting gear set includes heavily loaded second gear shifting gear set, underloading second gear shifting gear set and transport second gear shifting tooth
Wheel group；The differential mechanism includes differential casing, the differential gear in the differential carrier body, is located at differential casing
Outer main reducing gear drive bevel gear and main reducing gear driven wheel of differential, the semiaxis being connect with the differential gear, the master
Retarder drive bevel gear and the drive axle input gear are coaxially connected.
Further, the first clutch of the double-clutch automatic gearbox and second clutch include two groups coaxial
The multidisc clutch being mounted in closed oil pocket.
Further, the heavily loaded gear shifting gear set includes the heavy duty one being arranged on the solid input shaft
Keep off, reverse gear driving gear, and be assemblied on one axis of output shaft in pairs and with a heavily loaded gear, the driving gear that reverses gear nibbles
The heavy duty one of conjunction keeps off driven gear；The one gear shifting gear set of underloading includes the underloading being arranged on the solid input shaft
One gear driving gear, and the underloading for being assemblied on one axis of output shaft and being engaged with the one gear driving gear of underloading in pairs
One gear driven gear；The one gear shifting gear set of transport includes the gear active of transport one being arranged on the solid input shaft
Gear, and be assemblied on two axis of output shaft in pairs and the transport one engaged with the one gear driving gear of transport keep off it is driven
Gear.
Further, the heavily loaded second gear shifting gear set includes the heavy duty two being arranged on the hollow input shaft
Gear, transport two gear driving gear, and be assemblied on one axis of output shaft in pairs and with the heavily loaded second gear, transport second gear master
The heavily loaded second gear driven gear of moving gear engagement；The underloading second gear shifting gear set includes being arranged in the hollow input shaft
On underloading two gear driving gear, and be assemblied on one axis of output shaft and nibbled with the underloading two gear driving gear in pairs
The underloading second gear driven gear of conjunction；The transport second gear shifting gear set includes being assemblied on two axis of output shaft in pairs simultaneously
The transport second gear driven gear engaged with the heavily loaded second gear, transport two gear driving gear；The shifting gear set packet that reverses gear
Include the constant mesh gear that reverses gear being arranged on the hollow input shaft, be assemblied on two axis of output shaft in pairs and with it is described fall
Reverse gear driven gear and the jackshaft first gear of reversing gear that is engaged with the driven gear that reverses gear of gear constant mesh gear engagement
It is described to reverse gear between jackshaft first gear and jackshaft second gear of reversing gear in by reversing gear with jackshaft second gear of reversing gear
Between axis connection.
Further, the fluid torque-converter is equipped with hydraulic control system, the work including monitoring load power output shaft
Make state and status information be changed into the first sensor system of electric signal, to first sensor system monitoring to start
The intervention information that machine, the status information of load power output shaft and driver provide is compared operation and the journey according to setting
Sequence issues the first electronic control unit of control command, the first letter handled the electric signal that first sensor system issues
Number processing system, and order for receiving the first electronic control unit and executed to fluid torque-converter is controlled first
Mechanism, first executing agency include lock-up clutch solenoid valve.
Further, the double-clutch automatic gearbox is equipped with self shifter control system, including test vehicle
Operating status and the second sensor system that the mechanical quantity of status information is changed into electric signal, to received second sensor system
The intervention information that the travel condition of vehicle information that detects, driver provide of uniting is compared operation, and according to the rule of setting
The second electronic control unit for issuing control command, the second signal that the electric signal that second sensor system issues is handled
Processing system, and control command for receiving the second electronic control unit and carry out the switching of automatic catch position and double clutch
The second executing agency that oil pressure is adjusted, second executing agency includes gearshift magnetic valve and pressure regulating solenoid valve.
Further, the load power output shaft be equipped with detection load power output shaft revolving speed 3rd sensor,
Detect the 4th sensor of engine crankshaft rotating speed and for obtaining sensor rotation speed information and described in controlling according to rotary speed information
The third electronic control unit of load power output shaft revolving speed, the 3rd sensor, the 4th sensor signal output end with
The signal input part of the third electronic control unit connects, on the third electronic control unit and the fluid torque-converter
Hydraulic control system connection.
Further, it is equipped between one gear driven gear of a heavily loaded gear driven gear and underloading for selecting wherein one
A and one axis of output shaft is connected and another continues that the gear of heavy duty one of empty set, underloading one is kept to keep off synchronizer；One gear of transport
Be equipped between driven gear and the driven gear that reverses gear for select one of them and two axis of output shaft to be connected and another after continuation of insurance
The transport one for holding empty set keeps off synchronizer；It is equipped between the heavy duty second gear driven gear and underloading second gear driven gear for selecting
One of them heavily loaded second gear, underloading second gear synchronizer connected with one axis of output shaft and that another continues to keep empty set；The fortune
It is equipped between defeated second gear driven gear and the driven gear that reverses gear for selecting one of them to be connected and another with two axis of output shaft
Continue transport second gear, the reverse gear synchronizer of holding empty set.
Further, the double-clutch automatic gearbox is equipped with control first clutch and second clutch mechanism is dynamic
The clutch operating device of work, and one gear of control heavy duty, one gear synchronizer of underloading are one gear synchronizer of transport, heavily loaded second gear, light
It carries second gear synchronizer and transports the shifting operation mechanism of second gear, reverse gear synchronizer movement.
The control method of tractor hydraulic mechanical type double-clutch automatic gearbox, comprising the following steps:
(1) when tractor load power output shaft works, the first electronic control unit is by receiving engine and load power
The tach signal of first sensor system acquisition on output shaft, so that the revolving speed that load power output shaft is kept constant is controlled, it is defeated
Stable power, power transmission line are out: power is passed to fluid torque-converter by power primary input axis by engine, lock
Only clutch separation, power are transferred to load power output shaft driving gear by fluid torque-converter effect, dynamic using load
Power output shaft driven gear transmits torque to load power output shaft with engaging for load power output shaft driving gear, makes it
The revolving speed kept constant exports stable power outward；
(2) when double-clutch automatic gearbox carries out shift work, the second electronic control unit adopts second sensor system
The parameter collected is compared with shift target component, is constantly issued control command and is adjusted, until completing gear shifting action；
(3) power transmission line of second gear gear shift operation is transported are as follows: fluid torque-converter is passed through in the torque of power primary input axis transmitting
Clutch outer member is passed to, hollow input shaft, heavily loaded second gear, transport two gear driving gear, transport second gear driven gear are first passed through
It is transferred to two axis of output shaft, then drive axle input gear is passed to by the second output gear, drive axle input gear will transmit
The power to come over passes to differential casing by main reducing gear drive bevel gear and main reducing gear driven wheel of differential, finally by
Power is distributed to left and right two semiaxis by differential gear, is travelled so that tractor be driven to advance；
(4) reverse gear the power transmission line of operation are as follows: the torque of power primary input axis transmitting by fluid torque-converter pass to from
Clutch shell first passes through solid input shaft, heavily loaded a gear, the driving gear that reverses gear, the jackshaft that reverses gear, jackshaft first gear of reversing gear
It is transferred to two axis of output shaft with jackshaft second gear of reversing gear, the driven gear that reverses gear, then drive is passed to by the second output gear
Dynamic bridge input gear, drive axle input gear by the power passed over by main reducing gear drive bevel gear and main reducing gear from
Dynamic bevel gear passes to differential casing, power is distributed to left and right two semiaxis finally by differential gear, to drive
Tractor falls back traveling.
The beneficial effects of the present invention are:
Using above-mentioned technical proposal of the invention, the torque of engine transmitting is transmitted to the input of fluid torque-converter by crankshaft
End, fluid torque-converter can adapt to automatically resistance change with variable speed within the scope of several sections to give full play to hydraulic power
The advantages of changing and reducing double-clutch automatic gearbox shift number；After power is passed to by the output end of fluid torque-converter
Double-clutch automatic gearbox, double-clutch automatic gearbox by multidisc clutch, corresponding shifting gear set and
Synchronizer exports revolving speed identical with corresponding shifting gear set gear to output shaft, then by defeated on every output shaft
Drive axle input gear is given in gear transmitting torque out；
When diesel driven tractor in good road surface using transport gear when driving, pump impeller in fluid torque-converter and turbine it
Between rotational speed difference reduce, at this time lock-up clutch engage, so that torque-converters is not worked and switch to machine driving, only by means of it is double from
Clutch automatic transmission selects different gears to meet the requirement of traveling, can give full play to high excellent of machinery driving efficiency in this way
Point；
When the tractor of diesel driven works under load behavior, for being mounted on fluid torque-converter output end and double clutch
For load power output shaft on automatic transmission input terminal, it is desirable that it must export enough load powers, at this time locking
Clutch separation, fluid torque-converter work, and give full play to the excellent of torque converter drive self-adapting load resistance acute variation
Point, while can guarantee that load power output shaft is able to maintain constant turn at this time by means of the control strategy to fluid torque-converter
Speed and export stable torque, in addition to this, the running part of tractor includes that its load speed will not be by too big
Influence.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is total drive mechanism schematic diagram of hydraulic mechanical type double-clutch automatic gearbox；
Fig. 2 is the structural schematic diagram of fluid torque-converter and double-clutch automatic gearbox；
Fig. 3 is the control planning figure of fluid torque-converter and power output shaft；
Fig. 4 is double-clutch automatic gearbox self shifter control planning figure；
Fig. 5 is double-clutch automatic gearbox shifting control system schematic diagram.
In figure: 1, pump impeller, 2, turbine, 3, lock-up clutch, 4, slide one-way clutch, 5, power primary input axis, 6, lead
Wheel, 7, load power output shaft, 8, second clutch, 9, first clutch, 10, clutch outer member, the 11, first output gear,
12, heavily loaded second gear driven gear, 13, heavily loaded second gear, transport two gear driving gear, 14, heavily loaded second gear, underloading second gear synchronizer,
15, be lightly loaded second gear driven gear, 16, underloading two gear driving gear, 17, reverse gear constant mesh gear, 18, heavy duty one keep off driven tooth
Wheel, 19, one gear of heavy duty, one gear synchronizer of underloading, 20, one gear driven gear of underloading, 21, one axis of output shaft, 22, solid input
Axis, 23, one gear driving gear of transport, 24, two axis of output shaft, 25, one gear driven gear of transport, 26, one gear synchronizer of transport,
27, one gear driving gear of underloading, 28, one gear of heavy duty, reverse gear driving gear, 29, jackshaft first gear of reversing gear, 30, reverse gear
Between axis, 31, jackshaft second gear of reversing gear, 32, reverse gear driven gear, 33, transport second gear, reverse gear synchronizer, 34, transport second gear
Driven gear, the 35, second output gear, 36, drive axle input gear, 37, hollow input shaft, 38, load power output shaft from
Moving gear, 39, load power output shaft driving gear, 40, main reducing gear drive bevel gear, 41, differential casing, 42, semiaxis,
43, differential gear, 44, main reducing gear driven wheel of differential.
Specific embodiment
Specific embodiment is given below, to technical solution of the present invention make further it is clear, complete, explain in detail.This
Embodiment is most preferred embodiment based on the technical solution of the present invention, but protection scope of the present invention is not limited to following implementation
Example.
Tractor hydraulic mechanical type double-clutch automatic gearbox, it is bent in the engine as power source including being sequentially connected
The fluid torque-converter of the power primary input axis 5 inputted for power, locking clutch on axis, the load for loading output power
Power output shaft 7, double-clutch automatic gearbox；
The power primary input axis 5 accesses the fluid torque-converter, and the fluid torque-converter includes converter cover, to double clutches
The torque converter output shaft of device automatic transmission output power, be mounted on the torque converter output shaft slide one-way clutch 4,
The lock-up clutch 3 that is mounted in the torque converter casing body, the pump impeller 1 being fixedly connected with the converter cover, with the change
The turbine 2 and fixed guide wheel 6 that square device output shaft is fixedly connected；It is defeated that load power is installed on the torque converter output shaft
Shaft driving gear 39 is equipped on the load power output shaft 7 and engages with the load power output shaft driving gear 39
Load power output shaft driven gear 38；
The double-clutch automatic gearbox include and Output Shaft of Hydraulic Torque Converter transmission connection clutch outer member 10, solid input
Axis 22, the hollow input shaft 37 being set on the solid input shaft 22, the first clutch 9 of control odd number gear, control even number
Second clutch 8, two axis 24 of main reducing gear, one axis 21 of output shaft and output shaft of gear, the hollow input shaft 37, which is equipped with, to be driven
Dynamic bridge input gear 36 and the first output gear 11 and the second output gear 35, the double clutch that engage are automatic
The first clutch 9 and second clutch 8 of speed changer include two groups of multidisc clutches being coaxially mounted in closed oil pocket；
The fluid torque-converter is equipped with hydraulic control system, including monitoring the working condition of load power output shaft 7 and by shape
State information is changed into the first sensor system of electric signal, and the engine arrived to first sensor system monitoring, load power are defeated
The intervention information that the status information of shaft 7 and driver provide is compared operation and issues control life according to the program of setting
The first electronic control unit enabled, to the first signal processing system for being handled of electric signal that first sensor system issues,
And order for receiving the first electronic control unit and the first executing agency that fluid torque-converter is controlled, described
One executing agency includes lock-up clutch solenoid valve；
The double-clutch automatic gearbox is equipped with self shifter control system, including testing the operating status of vehicle and by shape
The mechanical quantity of state information is changed into the second sensor system of electric signal, the vehicle arrived to received second sensor system detection
The intervention information that running state information, driver provide is compared operation, and issues control command according to the rule of setting
Second electronic control unit, to the second signal processing system that the electric signal that second sensor system issues is handled, and
The for receiving the control command of the second electronic control unit and carrying out that oil pressure is adjusted on the switching of automatic catch position and double clutch
Two executing agencies, second executing agency include gearshift magnetic valve and pressure regulating solenoid valve, and the pressure regulating solenoid valve is negative respectively
Pressure on duty control first clutch and second clutch, the first electronic control unit is according to feedback moment of pressure sensor
The pressure on first clutch and second clutch is adjusted, so that it is matched with present case, the gearshift magnetic valve is to pass through
Multi-channel switch valve leads to the engine oil pressure of selector fork to control, and selector fork occurs mobile under oil pressure effect while driving same
It walks device and selects corresponding gear；
It is bent that the load power output shaft 7 is equipped with the 3rd sensor of detection 7 revolving speed of load power output shaft, detection engine
It 4th sensor of axis revolving speed and is exported for obtaining sensor rotation speed information and controlling the load power according to rotary speed information
The third electronic control unit of 7 revolving speed of axis, the signal output end and the third electronics of the 3rd sensor, the 4th sensor
The signal input part of control unit connects, the hydraulic control system on the third electronic control unit and the fluid torque-converter
Connection.
The main reducing gear includes the odd number gear shift gear set and differential mechanism being arranged on the solid input shaft 22, with
And the even number gear shifting gear set and the shifting gear set that reverses gear, the odd number being arranged on the hollow input shaft 37 change choosing
Shelves gear group includes that heavy duty one keeps off one gear shifting gear set of shifting gear set, one gear shifting gear set of underloading and transport,
The even number gear shifting gear set includes heavily loaded second gear shifting gear set, underloading second gear shifting gear set and transport second gear
Shifting gear set；The differential mechanism include differential casing 41, the differential gear 43 in the differential casing 41,
Main reducing gear drive bevel gear 40 and main reducing gear driven wheel of differential 44 and the differential mechanism tooth outside differential casing 41
The semiaxis 42 of 43 connection of wheel, the main reducing gear drive bevel gear 40 and the drive axle input gear 36 are coaxially connected.
The heavily loaded gear shifting gear set includes the gear of heavy duty one being arranged on the solid input shaft 22, master of reversing gear
Moving gear 28, and be assemblied on one axis 21 of output shaft and engaged with a heavily loaded gear, the driving gear 28 that reverses gear in pairs
Heavy duty one keep off driven gear 18；It is described underloading one gear shifting gear set include be arranged in it is light on the solid input shaft 22
A gear driving gear 27 is carried, and is assemblied on one axis 21 of output shaft and is nibbled with the one gear driving gear 27 of underloading in pairs
The underloading one of conjunction keeps off driven gear 20；The one gear shifting gear set of transport includes being arranged on the solid input shaft 22
One gear driving gear 23 of transport, and be assemblied on two axis 24 of output shaft in pairs and keep off driving gear 23 with the transport one
The transport one of engagement keeps off driven gear 25；It is equipped with and uses between one gear driven gear 20 of a heavily loaded gear driven gear 18 and underloading
In selection, one of them is connected with one axis 21 of output shaft and another continues that the gear of heavy duty one of empty set, underloading one is kept to keep off synchronizer
19；It is equipped between the one gear driven gear 25 of transport and the driven gear 32 that reverses gear for selecting one of them and two axis of output shaft
24 be connected and another continue keep empty set transport one keep off synchronizer 26；
The heavy duty second gear shifting gear set includes the heavily loaded second gear being arranged on the hollow input shaft 37, transport second gear master
Moving gear 13, and be assemblied on one axis 21 of output shaft in pairs and with the heavily loaded second gear, transport two gear driving gear 13
The heavily loaded second gear driven gear 12 of engagement；The underloading second gear shifting gear set includes being arranged on the hollow input shaft 37
Underloading two gear driving gear 16, and be assemblied on one axis 21 of output shaft in pairs and with the underloading two gear driving gear
The underloading second gear driven gear 15 of 16 engagements；The transport second gear shifting gear set includes being assemblied in the output shaft two in pairs
The transport second gear driven gear 34 engaged on axis 24 and with the heavily loaded second gear, transport two gear driving gear 13；The choosing of reversing gear
Power shift gear group includes the constant mesh gear 17 that reverses gear being arranged on the hollow input shaft 37, is assemblied in the output shaft in pairs
Engaged on two axis 24 and with the constant mesh gear 17 that reverses gear reverse gear driven gear 32 and with the driven gear 32 that reverses gear
Reversing gear for engagement and is reversed gear jackshaft second gear 31 at jackshaft first gear 29, and described reverse gear and is fallen at jackshaft first gear 29
It is connected between gear jackshaft second gear 31 by the jackshaft 30 that reverses gear；The heavy duty second gear driven gear 12 and underloading second gear from
It is equipped between moving gear 15 for selecting one of them and one axis 21 of output shaft to be connected and heavy duty that another continues to keep empty set
Second gear, underloading second gear synchronizer 14；It is equipped between the transport second gear driven gear 34 and the driven gear 32 that reverses gear for selecting
One of them transport second gear, reverse gear synchronizer 33 connected with two axis 24 of output shaft and that another continues to keep empty set；
The double-clutch automatic gearbox is equipped with the clutch of control first clutch 9 and 8 mechanism action of second clutch
Operating mechanism, and one gear of control heavy duty, one gear synchronizer 19 of underloading, one gear synchronizer 26 of transport, heavily loaded second gear, underloading second gear
The shifting operation mechanism that synchronizer 14 and transport second gear, reverse gear synchronizer 33 act.
The control method of tractor hydraulic mechanical type double-clutch automatic gearbox, it is characterised in that: the following steps are included:
(1) when tractor load power output shaft works, the first electronic control unit is by receiving engine and load power
The tach signal of first sensor system acquisition on output shaft, so that the revolving speed that load power output shaft is kept constant is controlled, it is defeated
Stable power, power transmission line are out: power is passed to fluid torque-converter by power primary input axis 5 by engine,
Lock-up clutch 3 separates, and power is transferred to load power output shaft driving gear 39 by fluid torque-converter effect, using negative
Carry power output shaft driven gear 38 and load power output shaft driving gear 39 engages that transmit torque to load power defeated
Shaft 7, the revolving speed for keeping constant it export stable power outward；
(2) when double-clutch automatic gearbox carries out shift work, the second electronic control unit adopts second sensor system
The parameter collected is compared with shift target component, is constantly issued control command and is adjusted, until completing gear shifting action；
(3) power transmission line of second gear gear shift operation is transported are as follows: fluid torque-converter is passed through in the torque that power primary input axis 5 transmits
Pass to clutch outer member 10, first pass through hollow input shaft 37, heavily loaded second gear, transport two gear driving gear 13, transport second gear from
Moving gear 34 is transferred to two axis 24 of output shaft, then passes to drive axle input gear 36, drive axle by the second output gear 35
Input gear 36 transmits the power passed over by main reducing gear drive bevel gear 40 and main reducing gear driven wheel of differential 44
To differential casing 41, power is distributed into left and right two semiaxis 42 finally by differential gear 43, to drive tractor
Advance and travels；
(4) reverse gear the power transmission line of operation are as follows: the torque that power primary input axis 5 transmits by fluid torque-converter pass to from
Clutch shell 10, first passes through that solid input shaft 22, a heavily loaded gear, the driving gear 28 that reverses gear, the jackshaft 30 that reverses gear, reverse gear jackshaft
First gear 29 and reverse gear jackshaft second gear 31, the driven gear 32 that reverses gear are transferred to two axis 24 of output shaft, then pass through second
Output gear 35 passes to drive axle input gear 36, and the power passed over is passed through main reducing gear by drive axle input gear 36
Drive bevel gear 40 and main reducing gear driven wheel of differential 44 pass to differential casing 41, will move finally by differential gear 43
Power distributes to left and right two semiaxis 42, so that tractor be driven to fall back traveling.
Main feature of the invention, basic principle and advantages of the present invention has been shown and described above.Industry technology
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention can also have various change according to the actual situation
And improvement, for example, the first sensor system, second sensor system, 3rd sensor system include speed probe,
Pressure sensor, temperature sensor, position sensor etc., the speed probe are responsible for monitoring engine input shaft revolving speed or liquid
Power converter output speed or load power output shaft revolving speed；Pressure sensor be responsible for monitor lock-up clutch on oil pressure or
Load information on load power output shaft；Temperature sensor is responsible for monitoring Transmission fluid temperature information；Position passes
Sensor is responsible for monitoring the displacement and gear information of gear lever, including gear adjusts sensor, shift lever position sensor and identification
Hand self shifter sensor, each selector fork have a gear adjusting displacement sensor to be monitored, and signal is anti-
It is fed to the second electronic control unit, it is final to realize essence according to engine oil pressure of the accurate position adjustment effect on selector fork
Really shift；
For example, first signal processing system and the input signal of second signal processing system processing include analog quantity, pulse
Amount and digital quantity, analog signal include engine air throttle aperture, torque converter oil temperature, fluid torque-converter oil pressure etc., simulation
Signal is changed into digital signal and enters central processing unit after over-sampling and A/D conversion to be handled, and engine input is turned
Speed, fluid torque-converter output revolving speed and load power output shaft revolving speed isopulse signal, utilize counter records pulse after shaping
Number realizes the acquisition of tach signal；
For example, the first output gear 11 and the second output gear 35 may be mounted at two axis 24 of one axis 21 of output shaft and output shaft
Right end, as long as while drive axle input gear 36 engage with the first output gear 11 and the second output gear 35 in speed change
It is in three-dimensional space Arbitrary distribution in device case；For example, simultaneously as the output shaft of fluid torque-converter and double-clutch automatic gearbox
Primary input axis, shaft coupling can be used and be directly sequentially connected；For example, the load power output shaft 7 as tractor can be with
It is arranged in the side and front of tractor, can also be extended behind the axis to tractor；For example, power output shaft 7 is arranged in
The side of tractor can then change original load power output shaft driving gear 39 and load power output shaft driven gear 38
It is engaged for bevel-gear sett pair to change it and transmit the direction of the torque；These changes and improvements both fall within claimed invention
In range.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (10)
1. tractor hydraulic mechanical type double-clutch automatic gearbox, it is characterised in that: including power primary input axis (5), fluid power
Torque-converters, load power output shaft (7), double-clutch automatic gearbox；
The power primary input axis (5) accesses the fluid torque-converter, and the fluid torque-converter includes converter cover, Xiang Shuanli
The torque converter output shaft of clutch automatic transmission output power is mounted on the torque converter output shaft and slides one-way clutch
(4), the lock-up clutch (3) that is mounted in the torque converter casing body, the pump impeller (1) being fixedly connected with the converter cover,
The turbine (2) and fixed guide wheel (6) being fixedly connected with the torque converter output shaft；It is installed on the torque converter output shaft
There is load power output shaft driving gear (39), is equipped on the load power output shaft (7) and is exported with the load power
The load power output shaft driven gear (38) of axis driving gear (39) engagement；
The double-clutch automatic gearbox includes the clutch outer member (10), solid defeated with Output Shaft of Hydraulic Torque Converter transmission connection
Enter the first clutch of axis (22), the hollow input shaft (37) being set on the solid input shaft (22), control odd number gear
(9), second clutch (8), main reducing gear, one axis of output shaft (21) and two axis of output shaft (24) of control even number gear, the sky
Heart input shaft (37) is equipped with drive axle input gear (36) and the first output gear (11) engaged and the second output
Gear (35)；
The main reducing gear includes the odd number gear shift gear set and differential mechanism being arranged on the solid input shaft (22), and
The even number gear shifting gear set and the shifting gear set that reverses gear, the odd number being arranged on the hollow input shaft (37) change choosing
Shelves gear group includes that heavy duty one keeps off one gear shifting gear set of shifting gear set, one gear shifting gear set of underloading and transport,
The even number gear shifting gear set includes heavily loaded second gear shifting gear set, underloading second gear shifting gear set and transport second gear
Shifting gear set；The differential mechanism includes differential casing (41), the differential mechanism tooth in the differential casing (41)
Take turns (43), be located at differential casing (41) outer main reducing gear drive bevel gear (40) and main reducing gear driven wheel of differential (44),
The semiaxis (42) connecting with the differential gear (43), the main reducing gear drive bevel gear (40) and the drive axle input
Gear (36) is coaxially connected.
2. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, it is characterised in that: described double
The first clutch (9) and second clutch (8) of clutch automatic transmission include two groups and are coaxially mounted in closed oil pocket
Multidisc clutch.
3. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, it is characterised in that: described heavy
Carrying a gear shifting gear set includes the gear of heavy duty one, the driving gear that reverses gear (28) being arranged on the solid input shaft (22),
And the heavy duty for being assemblied on one axis of output shaft (21) and being engaged with a heavily loaded gear, the driving gear that reverses gear (28) in pairs
One gear driven gear (18)；The one gear shifting gear set of underloading includes the underloading being arranged on the solid input shaft (22)
One gear driving gear (27), and be assemblied on one axis of output shaft (21) in pairs and keep off driving gear with the underloading one
(27) underloading one engaged keeps off driven gear (20)；The one gear shifting gear set of transport includes being arranged in the solid input
Transport one on axis (22) keeps off driving gear (23), and be assemblied on two axis of output shaft (24) in pairs and with the transport
The transport one of one gear driving gear (23) engagement keeps off driven gear (25).
4. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, it is characterised in that: described heavy
Carrying second gear shifting gear set includes the heavily loaded second gear being arranged on the hollow input shaft (37), transport two gear driving gear
(13), and be in pairs assemblied on one axis of output shaft (21) and with the heavily loaded second gear, transport two gear driving gear (13)
The heavily loaded second gear driven gear (12) of engagement；The underloading second gear shifting gear set includes being arranged in the hollow input shaft
(37) the underloading two gear driving gear (16) on, and be assemblied on one axis of output shaft (21) in pairs and be lightly loaded two with described
Keep off the underloading second gear driven gear (15) of driving gear (16) engagement；The transport second gear shifting gear set includes assembly in pairs
The transport second gear engaged on two axis of output shaft (24) and with the heavily loaded second gear, transport two gear driving gear (13) is driven
Gear (34)；The shifting gear set that reverses gear includes the constant mesh gear that reverses gear being arranged on the hollow input shaft (37)
(17), the driven tooth of reversing gear for being assemblied on two axis of output shaft (24) and being engaged with the constant mesh gear that reverses gear (17) in pairs
Wheel (32) and reverse gear jackshaft first gear (29) and the jackshaft second that reverses gear engaged with the driven gear that reverses gear (32)
Gear (31), described reverse gear and are reversed gear between jackshaft second gear (31) through the jackshaft that reverses gear at jackshaft first gear (29)
(30) it connects.
5. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, it is characterised in that: the liquid
Power torque-converters is equipped with hydraulic control system, including monitoring the working condition of load power output shaft (7) and turning status information
Become the first sensor system of electric signal, the engine arrived to first sensor system monitoring, load power output shaft (7)
The intervention information that status information and driver provide is compared operation and issues the of control command according to the program of setting
One electronic control unit, to the first signal processing system that the electric signal that first sensor system issues is handled, Yi Jiyong
It is executed in the first executing agency for receiving the order of the first electronic control unit and being controlled fluid torque-converter, described first
Mechanism includes lock-up clutch solenoid valve.
6. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, it is characterised in that: described double
Clutch automatic transmission is equipped with self shifter control system, including testing the operating status of vehicle and by the machine of status information
Tool amount is changed into the second sensor system of electric signal, believes the travel condition of vehicle that received second sensor system detection arrives
The intervention information that breath, driver provide is compared operation, and the second electronics control of control command is issued according to the rule of setting
Unit processed, to the second signal processing system that is handled of electric signal that second sensor system issues, and for receiving the
The control command of two electronic control units simultaneously carries out the second executing agency that oil pressure is adjusted on the switching of automatic catch position and double clutch,
Second executing agency includes gearshift magnetic valve and pressure regulating solenoid valve.
7. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 5, it is characterised in that: described negative
It carries power output shaft (7) and is equipped with the 3rd sensor of detection load power output shaft (7) revolving speed, detection engine crankshaft rotating speed
The 4th sensor and turn for obtaining sensor rotation speed information and controlling the load power output shaft (7) according to rotary speed information
The third electronic control unit of speed, the 3rd sensor, the signal output end of the 4th sensor and the third are controlled electronically
The signal input part of unit connects, and the hydraulic control system on the third electronic control unit and the fluid torque-converter connects
It connects.
8. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 3 or 4, it is characterised in that: institute
It states and is equipped between one gear driven gear (20) of one gear driven gear (18) of heavy duty and underloading for selecting one of them and output shaft
One axis (21) is connected and another continues to keep the gear of heavy duty one of empty set, one gear synchronizer (19) of underloading；It is described transport one gear from
It is equipped between moving gear (25) and the driven gear that reverses gear (32) for selecting one of them connected and another with two axis of output shaft (24)
One is continued to keep the transport one of empty set to keep off synchronizer (26)；The heavy duty second gear driven gear (12) and underloading second gear driven tooth
It is equipped between wheel (15) for selecting one of them and one axis of output shaft (21) to be connected and heavy duty that another continues to keep empty set
Second gear, underloading second gear synchronizer (14)；It is equipped with and uses between the transport second gear driven gear (34) and the driven gear that reverses gear (32)
One of them transport second gear, reverse gear synchronizer connected with two axis of output shaft (24) and that another continues to keep empty set in selection
(33).
9. tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 8, it is characterised in that: described double
Clutch automatic transmission is equipped with the clutch control machine of control first clutch (9) and second clutch (8) mechanism action
Structure, and one gear of control heavy duty, one gear synchronizer (19) of underloading, one gear synchronizer (26) of transport, heavily loaded second gear, underloading second gear are same
It walks device (14) and transports the shifting operation mechanism of second gear, reverse gear synchronizer (33) movement.
10. the control method of tractor hydraulic mechanical type double-clutch automatic gearbox according to claim 1, feature
It is: the following steps are included:
(1) when tractor load power output shaft works, the first electronic control unit is by receiving engine and load power
The tach signal of first sensor system acquisition on output shaft, so that the revolving speed that load power output shaft is kept constant is controlled, it is defeated
Stable power, power transmission line are out: power is passed to hydraulic moment changeable by power primary input axis (5) by engine
Device, lock-up clutch (3) separation, power are transferred to load power output shaft driving gear (39) by fluid torque-converter effect,
Using engaging torque transfer for load power output shaft driven gear (38) and load power output shaft driving gear (39)
To load power output shaft (7), the revolving speed for keeping constant it exports stable power outward；
(2) when double-clutch automatic gearbox carries out shift work, the second electronic control unit adopts second sensor system
The parameter collected is compared with shift target component, is constantly issued control command and is adjusted, until completing gear shifting action；
(3) power transmission line of second gear gear shift operation is transported are as follows: hydraulic moment changeable is passed through in the torque of power primary input axis (5) transmitting
Device passes to clutch outer member (10), first passes through hollow input shaft (37), heavily loaded second gear, transport two gear driving gear (13), fortune
Defeated second gear driven gear (34) is transferred to two axis of output shaft (24), then passes to drive axle input by the second output gear (35)
The power passed over is passed through main reducing gear drive bevel gear (40) and main deceleration by gear (36), drive axle input gear (36)
Device driven wheel of differential (44) passes to differential casing (41), distributes to power finally by differential gear (43) left and right
Two semiaxis (42) travel so that tractor be driven to advance；
(4) reverse gear the power transmission line of operation are as follows: the torque of power primary input axis (5) transmitting is passed to by fluid torque-converter
Clutch outer member (10), first pass through solid input shaft (22), a heavily loaded gear, the driving gear that reverses gear (28), the jackshaft that reverses gear (30),
Jackshaft first gear of reversing gear (29) and jackshaft second gear (31) of reversing gear, the driven gear that reverses gear (32) are transferred to output shaft two
Axis (24), then passed to drive axle input gear (36) by the second output gear (35), drive axle input gear (36) will pass
The power passed passes to differential carrier by main reducing gear drive bevel gear (40) and main reducing gear driven wheel of differential (44)
Power is distributed to left and right two semiaxis (42) finally by differential gear (43), so that tractor be driven to fall back by body (41)
Traveling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910782689.0A CN110360311A (en) | 2019-08-23 | 2019-08-23 | Tractor hydraulic mechanical type double-clutch automatic gearbox and control method |
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| CN201910782689.0A CN110360311A (en) | 2019-08-23 | 2019-08-23 | Tractor hydraulic mechanical type double-clutch automatic gearbox and control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978988A (en) * | 2020-01-14 | 2020-04-10 | 河南科技大学 | Hybrid DCT tractor and automatic gear shifting control method thereof |
| CN111779814A (en) * | 2020-07-22 | 2020-10-16 | 河南科技大学 | Hydraulic mechanical power gear shifting transmission suitable for high-horsepower tractor |
| CN113915328A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Gearbox starting control strategy and tractor |
| CN114992253A (en) * | 2022-07-11 | 2022-09-02 | 洛阳东方众成离合器有限公司 | Long-life independent control double-acting clutch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080047378A1 (en) * | 2006-08-23 | 2008-02-28 | Gm Global Technology Operations, Inc. | Powertrain with torque converter and axially compact seven speed dual clutch transmission |
| KR100836107B1 (en) * | 2007-03-23 | 2008-06-09 | 기아자동차주식회사 | A 8th-speed power train of an automatic transmission for car |
| CN101251171A (en) * | 2007-02-23 | 2008-08-27 | 通用汽车环球科技运作公司 | Multi-speed transmission with countershaft gearing |
| JP2010138996A (en) * | 2008-12-11 | 2010-06-24 | Mitsubishi Electric Corp | Controller for automatic transmission |
| CN102518796A (en) * | 2012-01-09 | 2012-06-27 | 吉林大学 | Automatic hydraulic dual-clutch gear-shifting system |
| CN210770184U (en) * | 2019-08-23 | 2020-06-16 | 河南科技大学 | Hydraulic mechanical double-clutch automatic transmission of tractor |
-
2019
- 2019-08-23 CN CN201910782689.0A patent/CN110360311A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080047378A1 (en) * | 2006-08-23 | 2008-02-28 | Gm Global Technology Operations, Inc. | Powertrain with torque converter and axially compact seven speed dual clutch transmission |
| CN101251171A (en) * | 2007-02-23 | 2008-08-27 | 通用汽车环球科技运作公司 | Multi-speed transmission with countershaft gearing |
| KR100836107B1 (en) * | 2007-03-23 | 2008-06-09 | 기아자동차주식회사 | A 8th-speed power train of an automatic transmission for car |
| JP2010138996A (en) * | 2008-12-11 | 2010-06-24 | Mitsubishi Electric Corp | Controller for automatic transmission |
| CN102518796A (en) * | 2012-01-09 | 2012-06-27 | 吉林大学 | Automatic hydraulic dual-clutch gear-shifting system |
| CN210770184U (en) * | 2019-08-23 | 2020-06-16 | 河南科技大学 | Hydraulic mechanical double-clutch automatic transmission of tractor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978988A (en) * | 2020-01-14 | 2020-04-10 | 河南科技大学 | Hybrid DCT tractor and automatic gear shifting control method thereof |
| CN110978988B (en) * | 2020-01-14 | 2024-01-30 | 河南科技大学 | Hybrid power DCT tractor and automatic gear shifting control method thereof |
| CN111779814A (en) * | 2020-07-22 | 2020-10-16 | 河南科技大学 | Hydraulic mechanical power gear shifting transmission suitable for high-horsepower tractor |
| CN113915328A (en) * | 2021-09-28 | 2022-01-11 | 常州华创航空科技有限公司 | Gearbox starting control strategy and tractor |
| CN114992253A (en) * | 2022-07-11 | 2022-09-02 | 洛阳东方众成离合器有限公司 | Long-life independent control double-acting clutch |
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