CN108662137A - Construction machinery gear box exports power cut control system and method - Google Patents
Construction machinery gear box exports power cut control system and method Download PDFInfo
- Publication number
- CN108662137A CN108662137A CN201810809487.6A CN201810809487A CN108662137A CN 108662137 A CN108662137 A CN 108662137A CN 201810809487 A CN201810809487 A CN 201810809487A CN 108662137 A CN108662137 A CN 108662137A
- Authority
- CN
- China
- Prior art keywords
- power cut
- gear box
- clutch
- brake pressure
- preset value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
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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
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
Abstract
The present invention relates to construction machinery gear box power cut controls, to solve the disadvantage that existing gearbox exports power cut control system impact is will produce when cutting off power or restoring power output, the present invention discloses a kind of construction machinery gear box output power cut control system and method, according to the conjugation grade of power cut clutch in braking pressure control gearbox：When brake pressure value is less than P1, power cut clutch conjugation grade is 100%；When brake pressure value is located at P1 to range between P2, the conjugation grade of power cut clutch reduces within the scope of 100% to 0% and as brake pressure value increases；When brake pressure value is more than P2, the conjugation grade of power cut clutch is 0%.The present invention is exported using slope control principle control gearbox dynamic, the disengagement of power cut clutch and engage be all gradual change, power cut and restores steady, reduces impact, raising power component service life, raising work comfort degree.
Description
Technical field
The present invention relates to a kind of construction machinery gear boxes, and power cut control is exported more specifically to a kind of gearbox
System and method processed.
Background technology
In in-wheel driving walking machine field, such as loading machine engineering machinery, when being braked to machine, in order to protect
Parameter case and engine, it usually needs output power cut-out on gearbox.In order to cut off the power output of gearbox, speed change
Case includes gear box control unit, cut-out control valve, power cut clutch.TCU (gear box control unit) is controlled by cutting off
The engagement or disconnection of valve control power cut clutch processed, realize the cut-out or output of output power.
Existing gearbox cut-out control is all to detect machine by angular transducer as criterion according to mechanical braking
The angle that brake pedal turns over, when brake pedal rotational angle reaches certain value, triggering gear box control unit cuts power
Dialysis clutch disconnects, and realizes power cut, and otherwise power cut clutch engagement realizes that power very exports.This power
Cut-out mode can undoubtedly cause to impact to equipment.
Invention content
The technical problem to be solved by the present invention is to existing construction machinery gear box output power cut control systems to cut off
The shortcomings that impact being will produce when power or recovery power output, and providing one kind can be when cutting off power or replying power output
Reduce the gearbox output power cut control system and method for impact.
The present invention is to realize that the technical solution of its purpose is such：A kind of construction machinery gear box output power is constructed to cut
Disconnected control system, the gearbox include gear box control unit, power cut clutch, setting in the drive of power cut clutch
Power cut control valve on dynamic oil circuit, Electromagnetic Control end and the gear box control unit of the power cut control valve connect
It connects；Pressure sensing characterized by further comprising brake fluid system and for detecting brake fluid system brake pressure in real time
Device, the pressure sensor are connect with the gear box control unit；The power cut control valve is electric proportional valve, the change
Fast case control unit is exported to the power cut control valve according to the brake pressure that the pressure sensor detects in real time and is controlled
The conjugation grade of electric signal control power cut clutch processed.
When brake pressure value is less than preset value P1, gear box control unit output control signal make power cut from
The conjugation grade of clutch is 100%.
When brake pressure value is located at preset value P1 to range between preset value P2, the gear box control unit output
Control signal makes the conjugation grade of power cut clutch within the scope of 100% to 0% and with the increase and decrease of brake pressure value
And falling-rising namely brake pressure increase, the conjugation grade of power cut clutch reduces, and brake pressure reduces, power cut clutch
The conjugation grade of device increases.
When brake pressure value is more than preset value P2, gear box control unit output control signal make power cut from
The conjugation grade of clutch is 0%.
Further, in above-mentioned construction machinery gear box output power cut control system, when brake pressure value is located in advance
If value P1 is to range between preset value P2, the conjugation grade of the power cut clutch linearly increases and decreases with brake pressure value
Relationship namely brake pressure increase, and the conjugation grade of power cut clutch reduces, and the linear ratio of brake pressure reduces, power
The linear ratio of conjugation grade for cutting off clutch increases.Further, when brake pressure value is by being more than preset value P1 cataclysms to small
When preset value P1, gear box control unit output control signal make the conjugation grade of power cut clutch from current value by
100% is increased to according to fixed acceleration.Brake pressure value refers to operation by being more than preset value P1 cataclysms to less than preset value P1
Person loosens the brake, machine is changed to non-brake state from on-position when carrying out machine operation.
The present invention is to realize that the technical solution of its purpose is such：A kind of construction machinery gear box output power is disclosed to cut
Disconnected control method, which is characterized in that the brake pressure for obtaining braking system is controlled with following control logic according to brake pressure and become
The conjugation grade of power cut clutch in fast case.
When brake pressure value is less than preset value P1, gear box control unit output control signal make power cut from
The conjugation grade of clutch is 100%.
When brake pressure value is located at preset value P1 to range between preset value P2, the gear box control unit output
Control signal makes the conjugation grade of power cut clutch within the scope of 100% to 0% and with the increase and decrease of brake pressure value
And falling-rising namely brake pressure increase, the conjugation grade of power cut clutch reduces, and brake pressure reduces, power cut clutch
The conjugation grade of device increases.
When brake pressure value is more than preset value P2, gear box control unit output control signal make power cut from
The conjugation grade of clutch is 0%.Further, when brake pressure value is located at preset value P1 to range between preset value P2, institute
It states the conjugation grade of power cut clutch and brake pressure value linearly increases and decreases relationship namely brake pressure increases, power cut
The conjugation grade of clutch reduces, and the linear ratio of brake pressure reduces, the linear ratio liter of conjugation grade of power cut clutch
It is high.Further, when brake pressure value is by being more than preset value P1 cataclysms to less than preset value P1, the gear box control unit
Output control signal makes the conjugation grade of power cut clutch increase to 100% according to fixed acceleration from current value.
In the present invention, the conjugation grade of power cut clutch refer to power cut clutch output output power or
The ratio of the input power or torque of torque and input terminal, when power cut clutch is fully engaged, the output of output end
The conjugation grade of input power or moment of torsion of power or torque and input terminal etc. namely power cut clutch is 100%.When dynamic
When power cut-out clutch is completely disengaged, the output power or torque of power cut clutch output are zero namely power cut
The conjugation grade of clutch be 0%, when power cut clutch be in it is completely disengaged be fully engaged between when, power cut clutch
Sliding friction state is between the friction plate and liner plate of device, the input power or torque of power cut clutch input only have
Part is transferred to output end by the pair that rubs.
Compared with prior art, the present invention the present invention using brake pressure as control construction machinery gear box power cut from
Clutch engages the foundation with disengagement, and is exported using slope control principle control gearbox dynamic, controls gearbox power cutoff
The disengagement of clutch with to engage all be gradual change so that power cut and power recovery become more steady, reduce dynamic impact, carry
The service life of high power component improves work comfort degree.
Description of the drawings
Fig. 1 is the hydraulic schematic diagram of braking system of the present invention.
Fig. 2 is the control block diagram of construction machinery gear box power cut clutch in the present invention.
Fig. 3 is the relational graph of construction machinery gear box power output and brake pressure of the present invention.
Parts title and serial number in figure：
Brake pump 1, high press filtration 2, prefill valve 3, accumulator 4, brake valve 5, pressure sensor 6, brake 7, oil return filter 8,
Fuel tank 9, gear box control unit 10, power cut control valve 11, power cut clutch 12, brake pressure curve 13, power
Curve of output 14.
Specific implementation mode
Illustrate specific embodiment below in conjunction with the accompanying drawings.
Construction machinery gear box output power cut control system in the present embodiment includes brake fluid system, hydraulic pressure system
Dynamic system is as shown in Figure 1, brake fluid system includes brake pump 1, high press filtration 2, prefill valve 3, accumulator 4, brake valve 5, pressure
The components such as sensor 6, brake 7, oil return filter 8, fuel tank 9.The oil inlet of brake pump 1 connect with fuel tank 9, oil outlet and high press filtration
2 oil inlet connection, the oil inlet of prefill valve 3 is connect with the oil outlet of high press filtration 2, oil return opening connects through oil return filter 8 with fuel tank 9
It connects, the filling liquid hydraulic fluid port of prefill valve 3 is connect with the oil inlet of accumulator 4 and brake valve 5, and oil outlet and the brake 7 of brake valve 5 connect
It connects, pressure sensor 6 is connected on the oil outlet of brake valve 5, is acquired the pressure data that brake valve 5 exports in real time and is transferred to change
Fast case control unit 10.
As shown in Fig. 2, pressure sensor acquires the brake pressure data of the outlet of brake valve 5 and is transferred to gearbox control in real time
Unit (TCU) 10 processed, gear box control unit 10 export control signal control power cut control valve 11 according to brake pressure.It is dynamic
It is electric proportional valve that power, which cuts off control valve 11, and gear box control unit controls the aperture of power cut control valve 11, becomes to control
The conjugation grade of power cut clutch 12 in fast case.The conjugation grade of power cut clutch refers to power cut clutch output
Output power or torque and input terminal input power or torque ratio, when power cut clutch is fully engaged,
The conjugation grade of the output power or torque of output end and the input power of input terminal or moment of torsion etc. namely power cut clutch
It is 100%.When power cut clutch is completely disengaged, the output power or torque of power cut clutch output are zero,
Namely the conjugation grade of power cut clutch be 0%, when power cut clutch be in it is completely disengaged be fully engaged between when,
Sliding friction state, the input work of power cut clutch input are between the friction plate and liner plate of power cut clutch
Rate or torque only have part and are transferred to output end by the pair that rubs.
In the present embodiment, it is as follows that gearbox exports power cut control method：Pressure sensor detects hydraulic braking in real time
Braking system pressure, gear box control unit are cut according to the brake pressure that the pressure sensor detects in real time to the power
The conjugation grade of disconnected control valve output control electric signal control power cut clutch.
As shown in figure 3, when brake pressure value be less than preset value P1 when namely 0 to t1 moment section, brake pressure with braking press
Force curve be incremented by, but brake pressure value be less than preset value P1 when, gear box control unit output control signal make power cut from
The conjugation grade of clutch is 100%, and power cut clutch very exports power, and power output curve is horizontal linear.
When brake pressure value is located at preset value P1 to range between preset value P2 namely the t1-t2 moment, gearbox control
Unit output control signal processed makes the conjugation grade of power cut clutch within the scope of 100% to 0% and as braking is pressed
The increase of force value and linear scale reduces namely brake pressure by preset value P1 linear increments to preset value P2 when, power cut
For the conjugation grade of clutch by 100% linear decrease to 0%, it is negative oblique line that power output curve 14, which is slope in this period,.
Equally, if brake pressure by preset value P2 linear decreases to preset value P1 when, the conjugation grade of power cut clutch is linear by 0%
T2 is incremented in 100% namely Fig. 3 to the t1 periods.
When brake pressure value is more than preset value P2, gear box control unit output control signal makes power cut clutch
Conjugation grade be 0% namely power cut clutch it is completely disengaged, realize power cut.
When brake pressure value is by being more than preset value P1 cataclysms to less than preset value P1, such as at the t3 moment, operator releases
Brake valve 5 is put, brake pressure is become zero suddenly by Pm, and gear box control unit output control signal makes connecing for power cut clutch
It is right to increase to 100% according to fixed acceleration from current value (0%).If brake pressure is by the braking pressure less than preset value P2
Power becomes zero suddenly, such as sometime release brake valve of the operator between t1-t2, and brake pressure variations zero, power is cut
The conjugation grade of dialysis clutch increases to 100% from current value (value for being more than 0%) according to fixed acceleration.Fixed acceleration
(the increased amount of conjugation grade in the unit interval) is manually set, and the conjugation grade of power cut clutch is increased by this acceleration, speed change
Case, which does not have, generates dysgenic impact.
Compared with prior art, the present invention the present invention is using brake pressure as control gearbox power cutoff clutch engagement
With the foundation of disengagement, and exported using slope control principle control gearbox dynamic, control gearbox power cutoff clutch
It is all gradual change to disengage and engage so that power cut and power recovery become more steady, reduce dynamic impact, improve power member
The service life of device improves work comfort degree.
Claims (6)
1. a kind of construction machinery gear box exports power cut control system, gearbox includes that gear box control unit, power are cut
Dialysis clutch, the power cut control valve being arranged on power cut clutch driving oil circuit, the power cut control valve
Electromagnetic Control end is connect with the gear box control unit；Characterized by further comprising brake fluid system and for detecting in real time
The pressure sensor of brake fluid system brake pressure, the pressure sensor are connect with the gear box control unit；It is described
Power cut control valve is electric proportional valve, the braking that the gear box control unit detects in real time according to the pressure sensor
Pressure exports the conjugation grade that control electric signal controls power cut clutch to the power cut control valve：
When brake pressure value is less than preset value P1, the gear box control unit output control signal makes power cut clutch
Conjugation grade be 100%；
When brake pressure value is located at preset value P1 to range between preset value P2, the gear box control unit output control
Signal makes the conjugation grade of power cut clutch be dropped within the scope of 100% to 0% and with the increase and decrease of brake pressure value
It rises；
When brake pressure value is more than preset value P2, the gear box control unit output control signal makes power cut clutch
Conjugation grade be 0%.
2. construction machinery gear box according to claim 1 exports power cut control system, it is characterised in that work as braking
When pressure value is located at preset value P1 to range between preset value P2, the conjugation grade and brake pressure of the power cut clutch
The linear increase and decrease relationship of value.
3. construction machinery gear box according to claim 1 exports power cut control system, it is characterised in that work as braking
When pressure value is by being more than preset value P1 cataclysms to less than preset value P1, the gear box control unit output control signal makes power
The conjugation grade of cut-out clutch increases to 100% from current value according to fixed acceleration.
4. a kind of construction machinery gear box exports power cut control method, which is characterized in that obtain the braking pressure of braking system
Power controls the conjugation grade of power cut clutch in gearbox according to brake pressure with following control logic：
When brake pressure value is less than preset value P1, the gear box control unit output control signal makes power cut clutch
Conjugation grade be 100%；
When brake pressure value is located at preset value P1 to range between preset value P2, the gear box control unit output control
Signal makes the conjugation grade of power cut clutch be dropped within the scope of 100% to 0% and with the increase and decrease of brake pressure value
It rises；
When brake pressure value is more than preset value P2, the gear box control unit output control signal makes power cut clutch
Conjugation grade be 0%.
5. construction machinery gear box according to claim 4 exports power cut control method, it is characterised in that work as braking
When pressure value is located at preset value P1 to range between preset value P2, the conjugation grade and brake pressure of the power cut clutch
The linear increase and decrease relationship of value.
6. construction machinery gear box according to claim 4 exports power cut control method, it is characterised in that work as braking
When pressure value is by being more than preset value P1 cataclysms to less than preset value P1, the gear box control unit output control signal makes power
The conjugation grade of cut-out clutch increases to 100% from current value according to fixed acceleration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809487.6A CN108662137B (en) | 2018-07-23 | 2018-07-23 | Engineering machinery gearbox output power cut-off control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809487.6A CN108662137B (en) | 2018-07-23 | 2018-07-23 | Engineering machinery gearbox output power cut-off control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108662137A true CN108662137A (en) | 2018-10-16 |
| CN108662137B CN108662137B (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809487.6A Active CN108662137B (en) | 2018-07-23 | 2018-07-23 | Engineering machinery gearbox output power cut-off control system and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037962A (en) * | 2006-03-13 | 2007-09-19 | 丰田自动车株式会社 | Powertrain control apparatus and method |
| JP2015034597A (en) * | 2013-08-08 | 2015-02-19 | 日立建機株式会社 | Automatic gear change device of working vehicle |
| JP2017082965A (en) * | 2015-10-29 | 2017-05-18 | マツダ株式会社 | Control device of power train with centrifugal pendulum damper |
| CN107228187A (en) * | 2016-03-23 | 2017-10-03 | 斗山英维高株式会社 | The speed changer cutting control device and method of engineering machinery |
-
2018
- 2018-07-23 CN CN201810809487.6A patent/CN108662137B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037962A (en) * | 2006-03-13 | 2007-09-19 | 丰田自动车株式会社 | Powertrain control apparatus and method |
| JP2015034597A (en) * | 2013-08-08 | 2015-02-19 | 日立建機株式会社 | Automatic gear change device of working vehicle |
| JP2017082965A (en) * | 2015-10-29 | 2017-05-18 | マツダ株式会社 | Control device of power train with centrifugal pendulum damper |
| CN107228187A (en) * | 2016-03-23 | 2017-10-03 | 斗山英维高株式会社 | The speed changer cutting control device and method of engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108662137B (en) | 2019-12-17 |
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