CN108716540A - A kind of tractor is load-commutated and high and low shift gearbox control system - Google Patents
A kind of tractor is load-commutated and high and low shift gearbox control system Download PDFInfo
- Publication number
- CN108716540A CN108716540A CN201810852442.7A CN201810852442A CN108716540A CN 108716540 A CN108716540 A CN 108716540A CN 201810852442 A CN201810852442 A CN 201810852442A CN 108716540 A CN108716540 A CN 108716540A
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- Prior art keywords
- unit
- low shift
- information acquisition
- tractor
- commutated
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16H61/0202—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 the signals being electric
- F16H61/0204—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
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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
- F16H61/0202—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 the signals being electric
- F16H61/0204—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
-
- 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
- F16H2306/00—Shifting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The present invention relates to a kind of driving control systems of mechanical equipment,Specially a kind of tractor is load-commutated and high and low shift gearbox control system,Including power supply unit,It further include information acquisition unit,The electric signal of the status signal stepped on/bounced for acquiring clutch pedal and acquisition commutation and high and low shift selection information,Control unit,Signal for receiving information acquisition unit output,And it judges whether to execute action according to the signal that information acquisition unit exports,Execution unit,Control signal for being sent out according to control unit executes corresponding action,Wherein execution unit uses hydraulic control valve block,Including three road electricity proportional hydraulic valves,Using electrichydraulic control mode,This system can mating different gearbox,Has compatibility,Reliability,The convenience of debugging,Cut-out engine power is not required in commutation and gearshift procedure,It is easy to operate.
Description
Technical field
The present invention relates to a kind of driving control system of mechanical equipment, specially a kind of tractor is load-commutated and high and low shift
Gearbox control system.
Background technology
Most of high and medium power wheeled tractor of domestic production at present, using mechanical gear box, advance and retroversion side
To change be to be reversed gear by being arranged in gearbox, and using the mechanical changeovers mode such as balladeur train, engaging sleeve or synchronizer
Advanced and fall back the switching of gear, the main clutch of tractor need to be first detached when changing direction of advance, then carried out again
Advance or the mounting for falling back gear must stop tractor work if encountering event of overload, adjust recurrence step advance, mistake
Journey complexity is cumbersome, and working efficiency is low.
With the fast development of tractor industry, load-commutated and high and low shift gearbox becomes domestic tractor manufacturing enterprise
Research direction, it is load-commutated that two multi-disc wet clutches are set in gearbox, connect by controlling different clutch
It closes and realizes that tractor advances or reverse direction changes, without parking in the state of excess load, actual operating process is such as
Shown in Fig. 1, but this mode of operation is only applicable to the operation of load-commutated speed change, and producer needs to research and develop gearbox production of new generation
Product increase cost, therefore there is an urgent need for one kind having compatibility, reliability, conveniently for this load-commutated and high and low shift gearbox
The control system of debugging property, it is easy to operate in actual use to be suitable for different gearboxes.
Invention content
The present invention provides a kind of tractor is load-commutated and high and low shift gearbox control system, it is intended to existing load
Commutation and a kind of high and low shift gearbox completely new electrichydraulic control mode of object designs in order to control, make the system have compatibility, can
It is cost-effective with mating different gearboxes by property, the convenience of debugging.
In order to achieve the above object, the present invention is achieved by the following technical programs：
A kind of tractor is load-commutated and high and low shift gearbox control system, including power supply unit, further includes：
Information acquisition unit, the status signal stepped on/bounced for acquiring clutch pedal and acquisition commutation and high and low shift choosing
Select the electric signal of information；
Control unit, the signal for receiving information acquisition unit output, and judged according to the signal of information acquisition unit output
Whether execution action is carried out；
Execution unit, the control signal for being sent out according to control unit execute corresponding action；
The signal gathering unit is communicated to connect with described control unit, the execution unit and described control unit communication link
It connects, said supply unit is communicated to connect with described control unit.
Preferably, described control unit is TCU master controllers.
Preferably, described information collecting unit includes commutation information acquisition unit, high and low shift information acquisition unit, described to change
It is switched to information acquisition unit, high and low shift information acquisition unit by point operation control and obtains commutation, high and low shift selects the electricity of information
Signal.
Preferably, described information collecting unit further includes the clutch pedal information for acquiring clutch pedal position information
Collecting unit, the clutch pedal information acquisition unit include angular transducer and the acquisition for detecting clutch pedal rotational angle
The unit of clutch pedal switch state.
Preferably, the execution unit includes that clutch executes motor unit, and the clutch execution unit is according to described
The curve of control unit setting executes the separation of clutch or combines action.
Preferably, further include information socket, described information socket and described control unit communication connection.
Preferably, further include back buzzer, the back buzzer is communicated to connect with described information socket.
Compared with prior art, beneficial effects of the present invention are：
（1）The present invention is with tractor is load-commutated and high and low shift gearbox object in order to control, design control unit, information collection list
Member, execution unit, control unit judges whether to execute corresponding action according to the signal that information acquisition unit exports, according to judgement
As a result control signal is sent out to execution unit, the separation or combination of clutch, and execution unit design electricity is executed by execution unit
Proportional hydraulic valve controls each clutch, can mating different gearbox, have compatibility, reliability, a convenience of debugging.
（2）Gear shift and commutation process use electrichydraulic control mode, are not required to cut-out engine power, make the tractor in work
Smooth-going transformation is carried out between advance, retroversion and high speed, low gear, is enormously simplified the operating procedure of machine hand, is improved
Working efficiency.
Description of the drawings
Fig. 1 is existing load-commutated operational flowchart.
Fig. 2 is control system schematic diagram of the present invention.
Fig. 3 is hydraulic control valve block schematic diagram of the present invention.
Fig. 4 is work flow diagram of the present invention.
In figure：1 execution unit, 2 switch operation handles, 3 high and low shift operation handles, 4 angular transducers, 5 clutch pedals
Switch, 6 back buzzers, 7 first electric proportional hydraulic valves, 8 second electric proportional hydraulic valves, 9 third electricity proportional hydraulic valves, 10 switches
Valve, 11 overflow valves, 12 accumulators.
Specific implementation mode
Below in conjunction with attached drawing to the present invention tractor is load-commutated and high and low shift gearbox control system carry out it is detailed
Explanation.
It is illustrated in figure 2 that tractor of the present invention is load-commutated and high and low shift gearbox control system, including power supply unit, also
Including information acquisition unit, control unit, using TCU master controllers, i.e. automatic gear-box controller, model Finland EPEC lifes
The 3606-31 and execution unit 1 of production, signal gathering unit are communicated to connect with control unit, and execution unit 1 is logical with control unit
Letter connection, power supply unit are communicated to connect with control unit, wherein：
Information acquisition unit, the status signal stepped on/bounced for acquiring clutch pedal and acquisition commutation and high and low shift choosing
The electric signal of information is selected, information acquisition unit includes commutation information acquisition unit, high and low shift information acquisition unit and clutch pedal
Information acquisition unit.
The information acquisition unit that commutates switchs the electric signal for obtaining commutation selection information, including switch operation by point operation control
Handle 2, switch operation handle 2 be provided with handle advance, shelves after handle neutral gear and handle, correspond to respectively drive shift, neutral gear and after
Shelves are moved back, advance, neutral gear and the retrogressing of tractor can be controlled respectively, TCU master controllers are according to handle advance, handle neutral gear and handle
The folding signal of each circuit of shelves judges the location status of switch operation handle 2 afterwards, is drive shift or neutral gear or reverse drive gear, commutation
Operation handle 2 is preferably provided in the lower left of steering wheel, and the left hand of machine hand does not have to departure direction disk in operation in this way, singlehanded
The control of commutation action can be realized.
High and low shift information acquisition unit includes high and low shift operation handle 3, is pressed equipped with top grade in high and low shift operation handle 3
Button, low-grade button and neutral gear button correspond to high-grade, manual low-grade and manual neutral gear manually, high-grade button and low-grade button respectively
It is respectively intended to that high/low gear, neutral gear button is selected to be used for cutting off main clutch, using a flowing mode, press, detach main clutch,
It unclamps and then combines main clutch, TCU master controllers are sentenced according to the folding of handle top grade, handle low grade and each circuit of handle neutral gear
Action state residing for broken height low grade operation handle 3, top grade arrive high-grade or attonity to low-grade or low grade, while in high-grade button
With low-grade button band backlight, it is convenient for night work.
Clutch pedal information acquisition unit includes the unit of angular transducer 4 and acquisition clutch pedal switch state, angle
Degree sensor 4 is used to detect the rotational angle of clutch pedal, and can export its angle value to TCU master controllers, and by TCU
Master controller judges the location status of clutch pedal, steps on or bounces and the physical location of pedal, acquisition clutch are stepped on
The unit of switching plate state is clutch pedal switch 5, and state is stepped on or bounce for acquire clutch pedal, and by clutch
The position signal that device pedal is stepped on or bounced is exported to TCU master controllers, and TCU master controllers are stepped on according to clutch pedal or bullet
The position signal risen judges whether to corresponding execute action.
Gear signal of the TCU main controls residing for the collected switch operation handle of signal gathering unit 2, high and low shift are grasped
Make that the residing actuating signal of handle 3, clutch pedal is bounced/stepped on or physical location, judges whether to execute accordingly
If desired action executes corresponding action, then send out corresponding control signal to execution unit, without execution action then
Control signal is not sent out.
The control signal that execution unit 1 is sent out according to TCU master controllers, the binding curve set according to TCU master controllers
Corresponding action is executed, that is, executes the action of combination or the separation of clutch, execution unit 1 executes list including clutch operating
Member compares the clutch setting of load-commutated gearbox, hydraulic control valve block is specifically used, as shown in figure 3, hydraulic control valve block
It is divided into three road electricity proportional hydraulic valves, a path switch valve 10, two-stage overflow valve 11 and accumulator 12, three road electricity proportional hydraulic valve difference
It is KR for 7 i.e. KL of the first electric proportional hydraulic valve, 8 i.e. KH of the second electric proportional hydraulic valve and third electricity proportional hydraulic valve 9, controls respectively
Advance low regime clutch, advance high-gear clutch and back clutch, a path switch valve 10 control PTO clutches, two-stage overflow
Valve 11 use concatenated mode, setting accumulator 12 be used as energy savings device, emergency rating down feed system provide energy into
Row gear shift, in addition the invention also includes back buzzer 6 and information socket, wherein information socket uses CAN bus socket, that is, controls
Device LAN socket processed, information socket are communicated to connect with TCU master controllers, and back buzzer 6 is communicated to connect with information socket.
Above-mentioned tractor is load-commutated and the course of work of high and low shift gearbox control system as shown in figure 4, TCU master first
Controller is exported according to being opened or closed for each circuit of shelves after the advance of the handle of switch operation handle 2, handle neutral gear, handle
Signal judges that the current location of switch operation handle 2 is to be divided into following three kinds of situations in drive shift or neutral gear or reverse drive gear：
（1）Switch operation handle 2 is in drive shift, then the clutch pedal angle value and clutch detected according to angular transducer
The cut-off/close signal of pedal switch 5 judges that the state of main clutch pedal is stepped on or bounced：
If a, main clutch pedal state is to step on, TCU master controllers output control signals to tri- roads 1 Zhong of execution unit electricity
Proportional hydraulic valve, control advance low regime clutch, advance high-gear clutch and reverse drive gear clutch detach.
If b, main clutch pedal state is to bounce, high and low shift is judged according to the actuating signal of high and low shift operation handle 3
Operation handle 3 is in high-grade and arrives low grade, low grade to high-grade or attonity state,
If in the low-grade state to top grade, TCU master controllers output control signals to three road electricity proportional hydraulic valves, control
Advance low regime clutch is combined by setting curve separation, advance high-gear clutch by setting curve, reverse drive gear clutch point
From.
If in the high-grade state to low grade, TCU master controllers output control signals to three electric proportional hydraulic valves, control
Advance low regime clutch processed is combined by setting curve, and advance high-gear clutch is by setting curve separation, reverse drive gear clutch separation.
If the state in attonity, judges which kind of location status is high and low shift operation handle 3 be in：It is high-grade or low-grade,
If being in high-grade position, TCU master controllers output control signals to three electric proportional hydraulic valves, control advance low regime clutch
Separation, advance high-gear clutch are combined by setting curve, reverse drive gear clutch separation；If being in low gear position, TCU main controls
Device outputs control signals to three electric proportional hydraulic valves, and control advance low regime clutch is combined by setting curve, advance it is high-grade from
Clutch detaches, reverse drive gear clutch separation.
（2）If switch operation handle 2 is in reverse drive gear, TCU master controllers acquire clutch pedal angle value and clutch
Pedal switch state judges that main clutch pedal is the state for bouncing or stepping on：
If a, main clutch pedal is in the state bounced, TCU master controllers output control signals to three electric proportional hydraulics
Valve, control advance low regime clutch separation, the separation of advance high-gear clutch, reverse drive gear clutch are combined by the curve of setting.
If b, main clutch pedal is in the state stepped on, TCU master controllers output control signals to three electric ratios
Hydraulic valve, control advance low regime clutch, advance high-gear clutch and reverse drive gear clutch separation.
（3）If switch operation handle 2 is in neutral gear, TCU master controllers output control signals to three electric proportional hydraulics
Valve, control advance low regime clutch, advance high-gear clutch and reverse drive gear clutch separation.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and this field is general
Other modifications or equivalent replacement that logical technical staff makes technical scheme of the present invention, without departing from the technology of the present invention side
The spirit and scope of case, are intended to be within the scope of the claims of the invention.
Claims (7)
1. a kind of tractor is load-commutated and high and low shift gearbox control system, including power supply unit, it is characterised in that further include：
Information acquisition unit, the status signal stepped on/bounced for acquiring clutch pedal and acquisition commutation and high and low shift choosing
Select the electric signal of information；
Control unit, the signal for receiving information acquisition unit output, and judged according to the signal of information acquisition unit output
Whether execution action is carried out；
Execution unit, the control signal for being sent out according to control unit execute corresponding action；
The signal gathering unit is communicated to connect with described control unit, the execution unit and described control unit communication link
It connects, said supply unit is communicated to connect with described control unit.
2. a kind of tractor as described in claim 1 is load-commutated and high and low shift gearbox control system, it is characterised in that：Institute
It is TCU master controllers to state control unit.
3. a kind of tractor as claimed in claim 1 or 2 is load-commutated and high and low shift gearbox control system, feature exist
In：Described information collecting unit includes commutation information acquisition unit, high and low shift information acquisition unit, the commutation information collection list
Member, high and low shift information acquisition unit are switched by point operation control and obtain commutation, high and low shift selects the electric signal of information.
4. a kind of tractor as claimed in claim 3 is load-commutated and high and low shift gearbox control system, which is characterized in that institute
It further includes the clutch pedal information acquisition unit for acquiring clutch pedal position information, the clutch to state information acquisition unit
Pedal information acquisition unit includes the angular transducer and acquisition clutch pedal switch state for detecting clutch pedal rotational angle
Unit.
5. a kind of tractor as described in claim 1 is load-commutated and high and low shift gearbox control system, it is characterised in that：Institute
It includes clutch operating execution unit to state execution unit, what the clutch operating execution unit was set according to described control unit
Curve executes the separation of clutch or combines action.
6. a kind of tractor as described in claim 4 or 5 is load-commutated and high and low shift gearbox control system, feature exist
In：Further include information socket, described information socket is communicated to connect with described control unit.
7. a kind of tractor as claimed in claim 6 is load-commutated and high and low shift gearbox control system, it is characterised in that：Also
Including back buzzer, the back buzzer is communicated to connect with described information socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852442.7A CN108716540A (en) | 2018-07-30 | 2018-07-30 | A kind of tractor is load-commutated and high and low shift gearbox control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810852442.7A CN108716540A (en) | 2018-07-30 | 2018-07-30 | A kind of tractor is load-commutated and high and low shift gearbox control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108716540A true CN108716540A (en) | 2018-10-30 |
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ID=63914228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810852442.7A Pending CN108716540A (en) | 2018-07-30 | 2018-07-30 | A kind of tractor is load-commutated and high and low shift gearbox control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN108716540A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939729A (en) * | 2019-12-17 | 2020-03-31 | 山东潍坊鲁中拖拉机有限公司 | Power reversing control system |
| CN112161045A (en) * | 2020-09-29 | 2021-01-01 | 江苏常发农业装备股份有限公司 | Tractor power shift electrical control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614277A (en) * | 2009-07-30 | 2009-12-30 | 中国一拖集团有限公司 | Tractor dynamic power shift gear box electrical control unit |
| CN203362900U (en) * | 2013-07-03 | 2013-12-25 | 李英杰 | Clutch automatic control system of manual transmission |
| CN104948729A (en) * | 2015-05-11 | 2015-09-30 | 合肥工业大学 | Electrohydraulic control system for seven-speed oppositely-arranged dual-clutch transmission |
| CN105402396A (en) * | 2015-12-10 | 2016-03-16 | 江苏沃得农业机械有限公司 | Wheel type tractor power shift electro-hydraulic control device and method |
| CN206290517U (en) * | 2016-12-26 | 2017-06-30 | 雷沃重工股份有限公司 | A kind of tractor dynamic power shift controls valve block |
-
2018
- 2018-07-30 CN CN201810852442.7A patent/CN108716540A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614277A (en) * | 2009-07-30 | 2009-12-30 | 中国一拖集团有限公司 | Tractor dynamic power shift gear box electrical control unit |
| CN203362900U (en) * | 2013-07-03 | 2013-12-25 | 李英杰 | Clutch automatic control system of manual transmission |
| CN104948729A (en) * | 2015-05-11 | 2015-09-30 | 合肥工业大学 | Electrohydraulic control system for seven-speed oppositely-arranged dual-clutch transmission |
| CN105402396A (en) * | 2015-12-10 | 2016-03-16 | 江苏沃得农业机械有限公司 | Wheel type tractor power shift electro-hydraulic control device and method |
| CN206290517U (en) * | 2016-12-26 | 2017-06-30 | 雷沃重工股份有限公司 | A kind of tractor dynamic power shift controls valve block |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939729A (en) * | 2019-12-17 | 2020-03-31 | 山东潍坊鲁中拖拉机有限公司 | Power reversing control system |
| CN110939729B (en) * | 2019-12-17 | 2021-07-06 | 山东潍坊鲁中拖拉机有限公司 | Power reversing control system |
| CN112161045A (en) * | 2020-09-29 | 2021-01-01 | 江苏常发农业装备股份有限公司 | Tractor power shift electrical control system |
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Application publication date: 20181030 |