CN103062164A - Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine - Google Patents
Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine Download PDFInfo
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Abstract
The invention discloses an overload protection debugging control method, an overload protection debugging control device, an overload protection debugging control system and an engineering machine. The method includes: acquiring input opening adjustment information of an electric proportional pressure relief valve; adjusting opening of the electric proportional pressure relief valve in a hydraulic constant-pressure system according to the opening adjustment information of the electric proportional pressure relief valve; acquiring first pressure of hydraulic the constant-pressure system when the engineering machine is at a rated speed; and when the first pressure is equal to the sum of set maximum pressure and set pressure protection increment of the hydraulic constant-pressure system, outputting debugging finished prompt information. Manual visual observation of the pressure of the hydraulic constant-pressure system is not needed, and the electric proportional pressure relief valve is adjusted through electronic control and only by manually inputting the opening adjustment information thereof by a debugging personnel. Therefore, compared with the prior art, the method, the device, the system and the engineering machine have the advantages that accuracy of set pressure calibration of the pressure relief valve is improved greatly, and further energy waste is avoided while service life of the hydraulic constant-pressure system is prolonged.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of debugging control program, device, system and a kind of engineering machinery of overload protection.
Background technique
In the hydraulic constant pressure system such as various engineering machinery such as concrete mixers, relief valve is as the pressure control valve of necessity, its Main Function is: when the pressure of hydraulic constant pressure system reaches the set pressure of relief valve, relief valve begins overflow, in case the locking system overload, thereby guarantee security of system.
As shown in Figure 1, the hydraulic constant pressure system of engineering machinery generally includes: motor 4, fuel tank 10, constant pressure pump 1, tilt cylinder 3, overflow reduction valve 2 and accumulator 5.Motor 4 drives dynamical element constant pressure pump 1 to hydraulic pressure constant-voltage system fuel feeding as power source, hydraulic energy transfer is that mechanical energy is passed through tilt cylinder 3 and externally done work, when system pressure reaches the cracking pressure of overflow reduction valve 2, overflow reduction valve 2 is opened, the oil that constant pressure pump 1 is discharged flows back to fuel tank 10 through overflow reduction valve 2, to keep the safety of hydraulic pressure constant-voltage system.
Because all there is certain cracking pressure in relief valve, in the hydraulic constant pressure system of therefore present engineering machinery, the set pressure of relief valve is got one usually greater than the fixed value of system's constant pressure.In the time of in system pressure is in the constant pressure scope, relief valve cuts out, and when system pressure reached the set pressure of relief valve, relief valve was opened.
The set pressure P of relief valve is set in the prior art,
SUsually adopt following steps:
One, the regulator bolts of relief valve is all opened;
Two, regulate system pressure P and the observed pressure table of hydraulic pressure constant-voltage system, until pressure gauge display system pressure P=P
S+ △ P, usually △ P=2MPa;
Three, the regulator bolts of regulation relief valve and observed pressure table are until pressure gauge display system pressure P=P
S
The defective that the prior art exists is that in the step 3, the adjusting of system pressure relies on commissioning staff's observed pressure table data and manually-operable to finish usually, and degree of accuracy is lower, is lower than set pressure P if mistake is adjusted to the protection pressure of relief valve
S, will make the too early startup overflow protection of hydraulic constant pressure system, cause the load increase of constant pressure pump, engine power to raise; thereby cause energy waste; in addition, wait operation if there is leaking accent, also can have influence on the working life of whole system and bring larger potential safety hazard.
Summary of the invention
The invention provides a kind of debugging control program, device, system and a kind of engineering machinery of overload protection, in order to improve the accuracy of demarcating the relief valve set pressure.
The debugging control program of overload protection of the present invention comprises:
Obtain the regulation information of the electric proportional pressure control valve of input;
Regulate the aperture of electric proportional pressure control valve in the hydraulic pressure constant-voltage system according to the regulation information of described electric proportional pressure control valve;
The first pressure of hydraulic constant pressure system when obtaining engineering machinery and being in rated speed;
When described the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging.
The debugging control device of overload protection of the present invention comprises:
Obtain equipment, be used for obtaining the regulation information of the electric proportional pressure control valve of input, and the first pressure of engineering machinery hydraulic constant pressure system when being in rated speed;
Control apparatus is used for the aperture according to the electric proportional pressure control valve of regulation information adjusting hydraulic pressure constant-voltage system of described electric proportional pressure control valve; And
When described the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging.
The debugging control system of overload protection of the present invention comprises:
Man-machine interface;
Pressure transducer, the first pressure of hydraulic constant pressure system when being in rated speed for detection of engineering machinery;
Control gear is connected with pressure sensor signal with man-machine interface respectively, is used for the aperture of regulating the electric proportional pressure control valve of hydraulic pressure constant-voltage system according to the regulation information of the electric proportional pressure control valve of input interface; And when described the first pressure equaled the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging was to man-machine interface.
Engineering machinery of the present invention comprises the debugging control system of the described overload protection of aforementioned techniques scheme.
In technical solution of the present invention; because control gear is regulated the aperture of electric proportional pressure control valve in the hydraulic pressure constant-voltage system according to the regulation information of electric proportional pressure control valve; when the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum; the complete information of output debugging; the pressure of hydraulic constant pressure system does not need the artificial visually examine; the adjusting of electricity proportional pressure control valve is finished by automatically controlled; the regulation information that the commissioning staff only needs manually to input electric proportional pressure control valve gets final product; therefore; be compared with the prior art; the accuracy that the relief valve set pressure is demarcated improves greatly; thereby reduced energy waste, and improved the working life of hydraulic constant pressure system.
Description of drawings
Fig. 1 is an existing hydraulic constant pressure system architecture schematic representation;
Fig. 2 is debugging control program one embodiment's of overload protection of the present invention schematic flow sheet;
Fig. 3 is the applied hydraulic constant pressure system architecture of the present invention schematic representation;
Fig. 4 is debugging control device one embodiment's of overload protection of the present invention structural representation;
Fig. 5 is one embodiment's of debugging control system of overload protection of the present invention structural representation;
Fig. 6 is applied another hydraulic constant pressure system architecture schematic representation of the present invention.
Reference character:
1-constant pressure pump 2-overflow reduction valve 3-tilt cylinder 4-motor
5-accumulator 10-fuel tank 20-obtains equipment 30-control apparatus
23-control gear 24-pressure transducer 25-man-machine interface 26-electricity proportional pressure control valve
The 27-storage device
Embodiment
The accuracy of demarcating in order to improve the relief valve set pressure reduces the unnecessary energy waste of hydraulic constant pressure system, and the embodiment of the invention provides a kind of debugging control program, device, system and a kind of engineering machinery of overload protection.In this technological scheme, the pressure of hydraulic constant pressure system does not need the artificial visually examine, and the adjusting of electric proportional pressure control valve is finished by automatically controlled, and the regulation information that the commissioning staff only needs manually to input electric proportional pressure control valve gets final product, therefore, the accuracy of relief valve set pressure demarcation improves greatly.The below is with specific embodiment and be described with reference to the accompanying drawings the present invention.
Embodiment as shown in Figure 2, the debugging control program of overload protection of the present invention comprises:
Set pressure maximum and refer to the maximum service pressure that the hydraulic constant pressure system can bear, this value determines according to test or experience that specifically setting pressure protection increment refers to the permission superpressure increment of hydraulic constant pressure system, and value is usually at 0 ~ 2Mpa.The regulation information of described electric proportional pressure control valve can comprise polytype, and for example the electric current regulated quantity of electric proportional pressure control valve also can be the information such as regulation amount of electric proportional pressure control valve.
As shown in Figure 3; in this embodiment; adopt electric proportional pressure control valve 26 as the overload protection element; because control gear is regulated the aperture of electric proportional pressure control valve in the hydraulic pressure constant-voltage system according to the regulation information of electric proportional pressure control valve; when the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum; the complete information of output debugging; the pressure of hydraulic constant pressure system does not need the artificial visually examine; the adjusting of electricity proportional pressure control valve is finished by automatically controlled; the regulation information that the commissioning staff only needs manually to input electric proportional pressure control valve gets final product; therefore; be compared with the prior art; the accuracy that the relief valve set pressure is demarcated improves greatly, thereby has reduced energy waste, and has improved the working life of hydraulic constant pressure system.
As preferred embodiment, the debugging control program of overload protection of the present invention, further comprising the steps of:
The maximum pressurising pressure of hydraulic constant pressure system when obtaining engineering machinery and being in the idling mode of no operatton action;
When described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting during the pressure maximum of hydraulic constant pressure system, output overloading protection fault information.
Among this embodiment, when maximum pressurising pressure refers to that engineering machinery is in the idling mode of no operatton action, the hydraulic constant pressure system pressure accessible pressure maximum that rises, and the pressure maximum P of the engineering machinery of setting hydraulic constant pressure system when being in the idling mode of no operatton action
cUsually less than the setting pressure maximum P of hydraulic constant pressure system
eWhen overload protection is normal, the pressure maximum of hydraulic constant pressure system when the engineering machinery that maximum pressurising pressure should be not less than setting is in the idling mode of no operatton action.Overload protection fault information can in time point out the commissioning staff that electric proportional pressure control valve (for example is correlated with verification; whether the associated components that checks electric proportional pressure control valve is loosening or damaged etc.), the energy waste that has caused because overload protection is inaccurate when having greatly reduced the hydraulic constant pressure system works.
As the embodiment who is more preferably, the debugging control program of overload protection of the present invention, further comprising the steps of:
Search overload protection debugging recording information;
When not finding overload protection debugging recording information, the first debugging of output prompting message.
This embodiment has increased self-diagnostic program; when the initial start-up of debugging control system; demarcated debugging if the system that detects never carries out overload protection, then the first debugging of output prompting message is reminded the commissioning staff that the hydraulic constant pressure system is carried out overload protection and is demarcated debugging.
Described overload protection debugging recording information can comprise much information, for example setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment, and/or debug time etc., but be not limited to these information.
As shown in Figure 4, based on identical inventive concept, the embodiment of the invention also provides a kind of debugging control device of overload protection, comprising:
Obtain equipment 20, be used for obtaining the regulation information of the electric proportional pressure control valve of input, and the first pressure of engineering machinery hydraulic constant pressure system when being in rated speed;
Control apparatus 30 is used for the aperture according to the electric proportional pressure control valve of regulation information adjusting hydraulic pressure constant-voltage system of described electric proportional pressure control valve; And
When described the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging.
Preferably, the described equipment 20 that obtains, the maximum pressurising pressure of hydraulic constant pressure system when being further used for obtaining engineering machinery and being in the idling mode of no operatton action;
Described control apparatus 30, when being further used for the pressure maximum of hydraulic constant pressure system when described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting, output overloading protection fault information.
More excellent, described control apparatus 30 is further used for searching overload protection debugging recording information, when not finding overload protection debugging recording information, and the first debugging of output prompting message.
Wherein, described overload protection debugging recording information comprises: the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment, and/or debug time.
Preferably, the regulation information of described electric proportional pressure control valve is the electric current regulated quantity of electric proportional pressure control valve.
As shown in Figure 5, the debugging control system of the overload protection of the embodiment of the invention comprises:
Man-machine interface 25;
Control gear 23 is connected signal with man-machine interface 25 respectively and is connected with pressure transducer, be used for the aperture of regulating the electric proportional pressure control valve of hydraulic pressure constant-voltage system according to the regulation information of the electric proportional pressure control valve of input interface 25; And when described the first pressure equaled the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging was to man-machine interface 25.
In this embodiment, man-machine interface 25 is media that user and system carry out mutual and information exchange, and its particular type is not limit, and for example can be the video terminal with keyboard and mouse, can be the video terminal of touch-screen type yet.When man-machine interface 25 is the video terminal of touch-screen type, can be provided with "+" and "-" button on the screen, the commissioning staff presses the regulation information that corresponding button just can be inputted electric proportional pressure control valve.On the screen corresponding indication button can be set further, with the guiding commissioning staff step by step carry out associative operation, convenience and accuracy are higher.Debug the form of expression of complete information on man-machine interface 25 and do not limit, for example can be voice suggestion, can be for being presented at hint image on the display screen etc.
Preferably, described pressure transducer 24, the maximum pressurising pressure of hydraulic constant pressure system when being further used for work machine and being in the idling mode of no operatton action;
Described control gear 23, when being further used for the pressure maximum of hydraulic constant pressure system when described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting, output overloading protection fault information is to man-machine interface 25.
The debugging control system of this embodiment's overload protection; increased fault self-diagnosis function; overload protection fault information can in time point out the commissioning staff to the relief valve verification of being correlated with, the energy waste that has caused because overload protection is inaccurate when having greatly reduced the hydraulic constant pressure system works.The type of overload protection fault information is not limit, and for example can be voice suggestion, can be for being presented at hint image on the display screen etc. yet.
Preferably, the debugging control system of this overload protection also comprises storage device 27, is used for storage overload protection debugging recording information;
Described control gear 23 is connected with storage device 27 signals, is further used for searching overload protection debugging recording information; When not finding overload protection debugging recording information, the first debugging of output prompting message is to man-machine interface 25.
Storage device 27 can be discrete physical entity, also can be integrated among the control gear.In like manner, debug for the first time the type of prompting message and do not limit, for example can be voice suggestion, also can be for being presented at hint image on the display screen etc.
Adopt debugging control system embodiment illustrated in fig. 4 as follows to the step that hydraulic constant pressure system shown in Figure 3 carries out the overload protection debugging:
One, clicks " debugging starts " button in man-machine interface 25, start the debugging calibrating procedure of hydraulic pressure constant-voltage system.At this moment, the electric proportional pressure control valve 26 of control gear 23 control is all opened, and makes the electric current I of electric proportional pressure control valve 26 equal control electric current I under the standard-sized sheet
Max, the pressure of the hydraulic constant pressure system that detects with time-control apparatus 23 Real-time Obtaining pressure transducers 24.At this moment, man-machine interface 25 will show the current value of electric proportional pressure control valve 26 and the force value of hydraulic constant pressure system;
Two, relevant parameter manually is set.The setting pressure maximum P that input hydraulic pressure constant-voltage system in the frame is set in man-machine interface 25
eAnd setting pressure protection increment △ P(gets a numerical value between 0 ~ 2Mpa usually);
Three, the constant pressure pump 1 of manual tune hydraulic constant pressure system raises the pressure of hydraulic constant pressure system, and observes the shown force value of man-machine interface 25, until the pressure P of hydraulic constant pressure system〉P
e+ △ P;
Four, press the electric current regulating key "-" of electric proportional pressure control valve in man-machine interface 25, at this moment the debugging control system will reduce according to certain slope the current value of electric proportional pressure control valve, continue to press electric current regulating key "-", the pressure P=P when the hydraulic constant pressure system
eDuring+△ P, man-machine interface 25 will show " debugging complete " button.If press "+" or "-" button this moment, the electric current of electric proportional pressure control valve 26 can only be finely tuned in more among a small circle at one that sets, and is generally used for rounding setting;
Five, click " debugging complete " button, finish the debugging of overload protection and demarcate.At this moment, but manual tune constant pressure pump 1 makes the pressure of hydraulic constant pressure system be in normal working.
By above-mentioned steps as can be known, after the debugging of finishing overload protection is demarcated, the set pressure P of electric proportional pressure control valve 26
SSetting pressure maximum P greater than the hydraulic constant pressure system
e, therefore, the situation that can avoid relief valve to start too early the overflow protection occurs, and the accuracy that the relief valve set pressure is demarcated is higher, has greatly reduced energy waste.
As shown in Figure 6, among this embodiment, the hydraulic constant pressure system comprises the overflow reduction valve 2 of connecting with electric proportional pressure control valve 26.The debugging step of overload protection is as follows:
Manually overflow reduction valve 2 is all opened;
According to above-mentioned steps one to step 5 electric proportional pressure control valve 26 is debugged demarcation;
The pressure regulating spring of manual tune overflow reduction valve 2, and observe simultaneously the shown force value of man-machine interface 25, until this force value equals set pressure P
SAfter stop;
Electric proportional pressure control valve 26 is removed.
After the debugging demarcation is complete; electricity proportional pressure control valve 26 can be removed, and overflow reduction valve 2 will be as the overload protection element of hydraulic constant pressure system, therefore; this embodiment's scheme has further been saved equipment cost when guaranteeing that the relief valve set pressure is demarcated accuracy.
The engineering machinery that the embodiment of the invention provides comprises the debugging control system of the overload protection described in the aforementioned techniques scheme.The type of described engineering machinery is not limit; such as being concrete pump, the vehicle-mounted pump of concrete (having increased the chassis than concrete pump) or concrete mixer (having increased chassis and jib than concrete pump) etc.; it is comparatively accurate that the debugging of its hydraulic constant pressure system overload protection is demarcated; greatly reduced energy waste, the working life of hydraulic constant pressure system is higher.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. the debugging control program of an overload protection is characterized in that, comprising:
Obtain the regulation information of the electric proportional pressure control valve of input;
Regulate the aperture of electric proportional pressure control valve in the hydraulic pressure constant-voltage system according to the regulation information of described electric proportional pressure control valve;
The first pressure of hydraulic constant pressure system when obtaining engineering machinery and being in rated speed;
When described the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging.
2. debugging control program as claimed in claim 1 is characterized in that, also comprises:
The maximum pressurising pressure of hydraulic constant pressure system when obtaining engineering machinery and being in the idling mode of no operatton action;
When described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting during the pressure maximum of hydraulic constant pressure system, output overloading protection fault information.
3. debugging control program as claimed in claim 1 is characterized in that, also comprises:
Search overload protection debugging recording information;
When not finding overload protection debugging recording information, the first debugging of output prompting message.
4. debugging control program as claimed in claim 3 is characterized in that, described overload protection debugging recording information comprises: the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment, and/or debug time.
5. such as each described debugging control program of claim 1 ~ 4, it is characterized in that the regulation information of described electric proportional pressure control valve is the electric current regulated quantity of electric proportional pressure control valve.
6. the debugging control device of an overload protection is characterized in that, comprising:
Obtain equipment (20), be used for obtaining the regulation information of the electric proportional pressure control valve of input, and the first pressure of engineering machinery hydraulic constant pressure system when being in rated speed;
Control apparatus (30) is used for the aperture according to the electric proportional pressure control valve of regulation information adjusting hydraulic pressure constant-voltage system of described electric proportional pressure control valve; And
When described the first pressure equals the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging.
7. debugging control device as claimed in claim 6 is characterized in that,
The described equipment (20) that obtains, the maximum pressurising pressure of hydraulic constant pressure system when being further used for obtaining engineering machinery and being in the idling mode of no operatton action;
Described control apparatus (30), when being further used for the pressure maximum of hydraulic constant pressure system when described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting, output overloading protection fault information.
8. debugging control device as claimed in claim 6 is characterized in that,
Described control apparatus (30) is further used for searching overload protection debugging recording information, when not finding overload protection debugging recording information, and the first debugging of output prompting message.
9. debugging control device as claimed in claim 8 is characterized in that, described overload protection debugging recording information comprises: the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment, and/or debug time.
10. such as each described debugging control device of claim 6 ~ 9, it is characterized in that the regulation information of described electric proportional pressure control valve is the electric current regulated quantity of electric proportional pressure control valve.
11. the debugging control system of an overload protection is characterized in that, comprising:
Man-machine interface (25);
Pressure transducer (24), the first pressure of hydraulic constant pressure system when being in rated speed for detection of engineering machinery;
Control gear (23) is connected 24 with man-machine interface (25) with pressure transducer respectively) signal is connected, and is used for the aperture of regulating the electric proportional pressure control valve of hydraulic pressure constant-voltage system according to the regulation information of the electric proportional pressure control valve of input interface (25); And when described the first pressure equaled the setting pressure maximum of hydraulic constant pressure system and setting pressure protection increment sum, the complete information of output debugging was to man-machine interface (25).
12. debugging control as claimed in claim 11 system is characterized in that,
Described pressure transducer (24), the maximum pressurising pressure of hydraulic constant pressure system when being further used for work machine and being in the idling mode of no operatton action;
Described control gear (23), when being further used for the pressure maximum of hydraulic constant pressure system when described maximum pressurising pressure is in the idling mode of no operatton action less than the engineering machinery of setting, output overloading protection fault information is to man-machine interface (25).
13. debugging control as claimed in claim 11 system is characterized in that, also comprises storage device (27), is used for storage overload protection debugging recording information;
Described control gear (23) is connected with storage device (27) signal, is further used for searching overload protection debugging recording information; When not finding overload protection debugging recording information, the first debugging of output prompting message is to man-machine interface (25).
14., it is characterized in that described hydraulic constant pressure system comprises the overflow reduction valve (2) of connecting with electric proportional pressure control valve (26) such as each described debugging control system of claim 11 ~ 13.
15. an engineering machinery is characterized in that, comprises the debugging control system such as each described overload protection of claim 11 to 14.
16. engineering machinery as claimed in claim 15 is characterized in that, described engineering machinery is concrete pump, the vehicle-mounted pump of concrete or concrete mixer.
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Cited By (6)
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| CN103807245A (en) * | 2014-01-21 | 2014-05-21 | 广西柳工机械股份有限公司 | Electric proportional overflow cushion valve for engineering machines |
| CN104831930A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Pumping control method, device, system and concrete pump truck |
| CN107420381A (en) * | 2017-03-17 | 2017-12-01 | 北京交通大学 | A kind of caliberating device of servo valve temperature screen system |
| CN109319663A (en) * | 2018-12-06 | 2019-02-12 | 中联重科股份有限公司 | Control method, equipment and crane for crane |
| CN111536092A (en) * | 2020-04-03 | 2020-08-14 | 湖南双达机电有限责任公司 | Hydraulic system, method for adjusting hydraulic system, and engineering vehicle |
| CN112924166A (en) * | 2021-03-17 | 2021-06-08 | 潍柴动力股份有限公司 | Overflow valve fault detection method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103807245A (en) * | 2014-01-21 | 2014-05-21 | 广西柳工机械股份有限公司 | Electric proportional overflow cushion valve for engineering machines |
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| CN107420381A (en) * | 2017-03-17 | 2017-12-01 | 北京交通大学 | A kind of caliberating device of servo valve temperature screen system |
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| CN112924166A (en) * | 2021-03-17 | 2021-06-08 | 潍柴动力股份有限公司 | Overflow valve fault detection method and device, electronic equipment and storage medium |
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|---|---|
| CN103062164B (en) | 2015-05-13 |
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