CN103644174B - The stroke control method of serial oil cylinders, device and system - Google Patents
The stroke control method of serial oil cylinders, device and system Download PDFInfo
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- CN103644174B CN103644174B CN201310689563.1A CN201310689563A CN103644174B CN 103644174 B CN103644174 B CN 103644174B CN 201310689563 A CN201310689563 A CN 201310689563A CN 103644174 B CN103644174 B CN 103644174B
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Abstract
The invention provides a kind of stroke control method of serial oil cylinders, device and system.Stroke control method comprises: obtain and do not carrying out the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances; In database, the prestore work information corresponding with actual conditions information is searched according to actual conditions information; Obtain the benefit draining time corresponding with the work information that prestores; According to the benefit draining operating time of mending in draining time controling pumping circulation subsequently.Operating mode engine speed close in present engine rotating speed, pumping pressure and database, pumping pressure can contrast by the present invention, the reinforcing and reducing methods oil time corresponding with current actual conditions information in reference data storehouse, carry out COMPREHENSIVE CALCULATING and prediction, under obtaining current working, mend the best opening time of oil drain valve, the stroke adjustment time is shortened greatly, extends piston working life.
Description
Technical field
The present invention relates to concrete pumping equipment field, more specifically, relate to a kind of stroke control method of serial oil cylinders, device and system.
Background technique
The pumping of concrete pump, Vehicle loaded pump or pump truck relies on the proximity switch of pump oil cylinder head to realize commutation, ensure that piston forward stroke can put in place; Its backward stroke then rely on the communicated cavity fluid of control two pumping oil cylinders to realize, thus realize total travel control.Wherein, communicated cavity fluid by pumping oil cylinder itself controlling device or mend oil drain valve regulate.Controlling device on pumping oil cylinder is more difficult change after fixation, and therefore, at present, the method controlling to mend oil drain valve that adopts regulates pumping stroke backward more.
In addition, in the anterior water tank of pumping oil cylinder, two proximity switches are housed, these two proximity switch dislocation are arranged.When pumping backward, if the position of the stroke of the piston rod of pumping oil cylinder between these two proximity switches, then show Overstroke.Say with being specially, after pumping starts, if a proximity switch has signal, another proximity switch no signal, then show Overstroke, and now, the opening time of mending oil drain valve is constant.If two proximity switches have signal or all no signals, then show that pumping stroke is abnormal, then need, by changing the opening time of mending oil drain valve, to regulate pumping stroke, make it reach position between two proximity switches.
Fig. 1 is the schematic diagram of pumping system of the prior art.As shown in Figure 1, two pumping oil cylinders 1 are in series arranged, for driving connected two concrete cylinder (not shown), the water tank place of pumping oil cylinder 1 is provided with two proximity switches 2, rod chamber and the rodless cavity of mending oil drain valve 3 and two pumping oil cylinders 1 are connected, to carry out repairing or draining to these two pumping oil cylinders 1.Pumping oil cylinder 1 is provided with controlling device 4.
Please refer to Fig. 1, when a proximity switch 2 has signal, another proximity switch 2 no signal, then communicated cavity fluid reaches transient equiliblium, and the opening time of mending oil drain valve 3 is constant.If two proximity switches 2 have signal or all no signals, then communicated cavity fluid is abnormal, mends oil drain valve 3 and opens, along with open-interval progressively increases, communicated cavity fluid supplements or leaks more and more faster, and finally realizes transient equiliblium, makes pumping stroke become normal.
Two pumping oil cylinders in Fig. 1 are serial oil cylinders, due to the reason such as accuracy of manufacturing, load, leakage of serial oil cylinders, two oil cylinders can be caused asynchronous, although adopt benefit oil drain valve can control pumping stroke more accurately, but during pumping equipment work, its pumping pressure and rate of pumping change greatly, and when different pumping pressures and rate of pumping, the amount of the fluid supplementing or discharge communicated cavity has a great difference.
In prior art, initial value and the increment of the benefit draining time under all operating modes are all identical, as long as this pumping pressure that can cause and rate of pumping 3 ~ 4 pumping circulation, its pumping stroke just can regulate and put in place.And for the operating mode had, need its pumping stroke just can be made to put in place through long-time adjustment.Further, along with the increase of service time, the wearing and tearing of each parts also can increase, thus leakage rate during thoughtful pumping strengthens.Like this, when the initial value and increment of mending draining are identical, the regulating time of pumping stroke also can obviously increase than when not wearing and tearing.
Further, because the lubricating point position of concrete piston is fixing, in the process that pumping stroke regulates, if piston does not arrive lubricating point, then cannot be lubricated, dry condition will be in always.Therefore, the stroke adjustment time is longer, and concrete piston wear is faster.
Summary of the invention
The present invention aims to provide the stroke control method of the short serial oil cylinders of a kind of pumping stroke regulating time, device and system.
For solving the problems of the technologies described above, according to a first aspect of the invention, provide a kind of stroke control method of serial oil cylinders, comprising: obtain and do not carrying out the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances; In database, the prestore work information corresponding with actual conditions information is searched according to actual conditions information; Obtain the benefit draining time corresponding with the work information that prestores; According to the benefit draining operating time of mending in draining time controling pumping circulation subsequently.
Further, before obtaining the benefit draining time corresponding with the work information that prestores, method also comprises: when database is empty, using first scheduled time as the work information that prestores.
Further, obtaining the benefit draining time corresponding with the work information that prestores comprises: revise to obtain mending the draining time to first scheduled time.
Further, obtaining the benefit draining time corresponding with the work information that prestores comprises: according to actual conditions information and the difference that prestores between work information; Obtain mending the draining time according to difference.
Further, when the benefit draining time exceeds allowed band, the benefit draining time is revised, to obtain the revised benefit draining time.
Further, after according to the benefit draining operating time of mending in draining time controling pumping circulation subsequently, also comprise: after the pumping stroke of serial oil cylinders carries out steady state, actual conditions information during acquisition steady state and benefit draining time; Actual conditions information during steady state and benefit draining time are stored in database.
Further, with actual conditions information during steady state and mend the draining time and be stored into the opening direction information of mending oil drain valve in addition in database simultaneously.
Further, actual conditions information comprises rate of pumping and engine speed.
According to a second aspect of the invention, providing a kind of travel control device of serial oil cylinders, comprising: actual conditions data obtaining module, not carrying out mending the actual conditions information in the one or more pumping circulation under draining operational circumstances for obtaining; Search module, for searching the prestore work information corresponding with actual conditions information according to actual conditions information in database; Computing module, for obtaining the benefit draining time corresponding with the work information that prestores; Control module, for according to the benefit draining operating time of mending in draining time controling pumping circulation subsequently.
Further, travel control device also comprises: the first puocessing module, for being empty at database, using first scheduled time as the work information that prestores.
Further, computing module comprises: difference calculating module, for according to actual conditions information and the difference that prestores between work information; Time Calculation module, mends the draining time for obtaining according to difference.
Further, computing module also comprises: correcting module, for when the benefit draining time exceeds allowed band, revises the benefit draining time, to obtain the revised benefit draining time.
Further, travel control device also comprises: steady working condition data obtaining module, for after carrying out steady state until the pumping stroke of serial oil cylinders, and actual conditions information during acquisition steady state and benefit draining time; Memory module, for being stored into actual conditions information during steady state and benefit draining time in database.
Further, actual conditions information comprises pumping system pressure, rate of pumping and engine speed.
According to a third aspect of the present invention, provide a kind of travel control system of serial oil cylinders, comprising: two pumping oil cylinders, two pumping oil cylinders are connected in series; Proximity switch, for detecting the stroke of two pumping oil cylinders; Mend oil drain valve, be connected with two pumping oil cylinders, for repairing and the draining of two pumping oil cylinders; Controller, be connected with proximity switch, for searching the prestore work information corresponding with actual conditions information according in the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances of not carrying out in database, after obtaining the benefit draining time corresponding with the work information that prestores, according to mending the benefit draining operating time of mending oil drain valve in draining time controling pumping circulation subsequently.
Further, controller also for: when database is empty, using first scheduled time as the work information that prestores.
Further, controller also for: according to actual conditions information and the difference that prestores between work information, and obtain mending the draining time according to difference.
Further, controller also for: after the pumping stroke of serial oil cylinders carries out steady state, obtain steady state time actual conditions information and mend the draining time, and by actual conditions information during steady state and mend the draining time be stored in database.
Operating mode engine speed close in present engine rotating speed, pumping pressure and database, pumping pressure can contrast by the present invention, the reinforcing and reducing methods oil time corresponding with current actual conditions information in reference data storehouse, carry out COMPREHENSIVE CALCULATING and prediction, under obtaining current working, mend the best opening time of oil drain valve, the stroke adjustment time is shortened greatly, extends piston working life.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the schematic diagram of pumping system of the prior art;
Fig. 2 diagrammatically illustrates the control flow chart of the stroke control method of the serial oil cylinders in the present invention;
Fig. 3 diagrammatically illustrates the hydraulic schematic diagram of the travel control system of the serial oil cylinders in the present invention; And
Fig. 4 diagrammatically illustrates the control principle drawing of Fig. 3.
Reference character in figure: 1, pumping oil cylinder; 2, proximity switch; 3, oil drain valve is mended; 4, controlling device; 5, oil cylinder proximity switch; 6, pressure transducer.
Embodiment
Below embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, please refer to Fig. 2, provide a kind of stroke control method of serial oil cylinders, especially, the method can be used for the Stroke Control of the pumping oil cylinder to concrete pumping equipment (such as concrete pump, Vehicle loaded pump or pump truck etc.).
The trip controlling method comprises: obtain and do not carrying out the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances; In database, the prestore work information corresponding with actual conditions information is searched according to actual conditions information; Obtain the benefit draining time corresponding with the work information that prestores; According to the benefit draining operating time of mending in draining time controling pumping circulation subsequently.Especially, not carrying out benefit draining operational circumstances can refer to before oil draining function is mended in unlatching, need by several pumping circulation obtain pumping system pressure, rate of pumping, engine speed and now oil cylinder stroke state (put in place, not in place, or cross position) information.
The present invention in advance in the benefit draining control information that databases storage is corresponding with each work information, such as, can mend the information such as the opening direction of draining time and/or benefit oil drain valve.After pumping starts, in the several pumping circulation started most (such as 2-8, more preferably 4 pumping circulation), the operation of benefit draining is not carried out to two the pumping oil cylinders be arranged in series.In the process, judge whether pumping stroke abnormal mode occurs judge in these initial pumping circulation, and whether pumping stroke is normal according to the state be similar to according to two proximity switches in prior art.If find that pumping stroke is abnormal, in each pumping circulation so after these initial pumping circulation, draining operation is mended accordingly to pumping oil cylinder, to reach the object regulating pumping stroke.
In one embodiment, this database builds by following manner, such as, can be directed through the data of theory calculate or experiment acquisition in advance in a database; If there is no corresponding work information in database, then run according to the logic control of standard, after stroke is stable, the information record of this operating mode is stored.
Specifically, the present invention utilizes the actual conditions information obtained in initial pumping circulation to retrieve database, therefrom find the prestore work information corresponding with actual conditions information, like this, the benefit draining time that the work information that just can obtain prestoring with this is corresponding.Such as, this benefit draining time can be stored in advance in this database, also can calculate according to the work information that prestores.Then, the opening time of oil drain valve can be mended according to this benefit draining time controling, thus reach the object of quick adjustment pumping stroke, effectively shorten the regulating time of pumping stroke, the regulating time due to pumping stroke can be avoided long, and cause piston not arrive lubricating point for a long time, cannot be lubricated and the problem of wearing and tearing.
Preferably, before obtaining the benefit draining time corresponding with the work information that prestores, the method also comprises: when database is empty, using first scheduled time as the work information that prestores.When equipment first time is run, not yet may accumulate any work information that prestores, therefore, database is still in empty state.Now, the corresponding work information that prestores cannot be found from database.In this case, the first predetermined time value that the present invention directly utilizes one to prestore is as the initial benefit draining time, such as, can using system clock number as this first predetermined time value, in one embodiment, this first scheduled time can be 500 system clocks (such as, can be about 0.5 second).
Preferably, obtaining the benefit draining time corresponding with the work information that prestores comprises: revise to obtain mending the draining time to first scheduled time.It should be noted that, this correction can be increase, and also can be reduce.Such as, different increment coefficients and decrement factor can be set.In one embodiment, increment coefficient can be 1.1, and decrement factor can be 1.2.Such as, when increment coefficient is 1.1, the revised benefit draining time is 500*1.1 system clock; When decrement factor is 1.2, the revised benefit draining time is 500/1.2 system clock.
A period of time when system cloud gray model after have accumulated a certain amount of work information that prestores in a database, so, the benefit draining time corresponding with the work information that prestores of the acquisition in the present invention also can comprise: according to actual conditions information and the difference that prestores between work information; Obtain mending the draining time according to difference.Like this, the method in the present invention can dope the best benefit draining time according to this difference.Like this, just can utilize controlling method common in prior art, such as PID control, fuzzy control, neuron network etc., dope according to this difference and mend the draining time.
It should be noted that the benefit draining time adopting above-mentioned Forecasting Methodology to obtain can be excessive or too small, and inapplicable practical application.In order to address this problem, preferably, when the benefit draining time exceeds allowed band, the benefit draining time is revised, to obtain the revised benefit draining time.Such as, when by predicting that benefit draining time of obtaining is 2000 system clocks, so then thinking to have exceeded the scope allowed, when by predicting that the benefit draining time obtained is 300 system clocks, so then can think the scope that have also exceeded permission.Now, namely need to revise accordingly the benefit draining time.In one embodiment, increment coefficient can be 1.1, and decrement factor can be 1.2.Such as, when mend the draining time be 300 system clocks and increment coefficient is 1.1 time, the revised benefit draining time is 300*1.1 system clock; Be 2000 system clocks when the benefit draining time, and when decrement factor is 1.8, the revised benefit draining time is 2000/1.8 system clock.By this correction, can avoid predicting the unreasonable data occurred, prevent the topics such as device damage because unreasonable data cause and security incident.
Preferably, after according to the benefit draining operating time of mending in draining time controling pumping circulation subsequently, also comprise: after the pumping stroke of serial oil cylinders carries out steady state, actual conditions information during acquisition steady state and benefit draining time; Actual conditions information during steady state and benefit draining time are stored in database.Preferably, with actual conditions information during steady state and mend the draining time and be stored into the opening direction information of mending oil drain valve in addition in database simultaneously.In this way, can, in the process of equipment use and wearing and tearing, at any time by the work information closest to current device state of wear, with the benefit draining time etc. corresponding with this work information, be stored in this database, in order to using in the future.
In this way, can constantly upgrade and improve database, thus utilize this database to form the expert system being directed to this equipment, and this patent system can according to the service time of equipment and abrasion condition, carry out real-time update, find the benefit draining time the most close with current actual conditions information with the fastest degree from lane database, make pumping stroke complete adjustment within the time of optimum, substantially reduce regulating time.
Claimant is found by research, and rate of pumping (i.e. the movement velocity of the piston of pumping oil cylinder) is a variable in pumping procedure, and bad measurement, it is main relevant to the flow of pump, and the flow of pump is relevant with discharge capacity and rotating speed.When equipment works but do not enter invariable power adjustment under certain operating mode, its pump delivery is definite value, and namely engine speed is higher, and the flow of pump is larger.But after entering invariable power, pump delivery is relevant to pumping pressure (i.e. the oil pressure of pumping oil cylinder), its discharge capacity can regulate automatically.Therefore, claimant thinks, it is suitable for substituting rate of pumping by engine speed.On this basis, the actual conditions information in the present invention comprises pumping system pressure, rate of pumping and engine speed.Obviously, the actual conditions information in the present invention is not limited to this two parameters, also can be that other is enough to characterize other parameter of operating mode.
Especially, by the excursion of the excursion of whole pumping pressure and engine speed, some regions can be divided into certain interval, set up expert database.
As a second aspect of the present invention, providing a kind of travel control device of serial oil cylinders, comprising: actual conditions data obtaining module, not carrying out mending the actual conditions information in the one or more pumping circulation under draining operational circumstances for obtaining; Search module, for searching the prestore work information corresponding with actual conditions information according to actual conditions information in database; Computing module, for obtaining the benefit draining time corresponding with the work information that prestores; Control module, for according to the benefit draining operating time of mending in draining time controling pumping circulation subsequently.
The present invention in advance in the benefit draining control information that databases storage is corresponding with each work information, such as, can mend the information such as the opening direction of draining time and/or benefit oil drain valve.After pumping starts, in the several pumping circulation started most (such as 2-8, more preferably 4 pumping circulation), the operation of benefit draining is not carried out to two the pumping oil cylinders be arranged in series.In the process, judge whether pumping stroke abnormal mode occurs judge in these initial pumping circulation, and whether pumping stroke is normal according to the state be similar to according to two proximity switches in prior art.If find that pumping stroke is abnormal, in each pumping circulation so after these initial pumping circulation, draining operation is mended accordingly to pumping oil cylinder, to reach the object regulating pumping stroke.
Specifically, the present invention utilizes the acquisition of actual conditions data obtaining module not carrying out the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances, then, it is searched module and just can retrieve database according to this actual conditions information, therefrom finds the prestore work information corresponding with actual conditions information.So computing module just can obtain prestoring with this work information corresponding benefit draining time.Such as, this benefit draining time can be stored in advance in this database, also can calculate according to the work information that prestores.Finally, control module can mend the opening time of oil drain valve according to this benefit draining time controling, thus reach the object of quick adjustment pumping stroke, effectively shorten the regulating time of pumping stroke, the regulating time due to pumping stroke can be avoided long, and cause piston not arrive lubricating point for a long time, cannot be lubricated and the problem of wearing and tearing.
Preferably, travel control device also comprises: the first puocessing module, for being empty at database, using first scheduled time as the work information that prestores.
Preferably, computing module comprises: difference calculating module, for according to actual conditions information and the difference that prestores between work information; Time Calculation module, mends the draining time for obtaining according to difference.Like this, the present invention can dope the best benefit draining time according to this difference.Like this, just can utilize controlling method common in prior art, such as PID control, fuzzy control, neuron network etc., dope according to this difference and mend the draining time.
It should be noted that the benefit draining time adopting above-mentioned Forecasting Methodology to obtain can be excessive or too small, and inapplicable practical application.In order to address this problem, preferably, computing module also comprises: correcting module, for when the benefit draining time exceeds allowed band, revises the benefit draining time, to obtain the revised benefit draining time.Such as, when by predicting that benefit draining time of obtaining is 2000 system clocks, so then thinking to have exceeded the scope allowed, when by predicting that the benefit draining time obtained is 300 system clocks, so then can think the scope that have also exceeded permission.Now, namely need to revise accordingly the benefit draining time.In one embodiment, increment coefficient can be 1.1, and decrement factor can be 1.2.Such as, when mend the draining time be 300 system clocks and increment coefficient is 1.1 time, the revised benefit draining time is 300*1.1 system clock; Be 2000 system clocks when the benefit draining time, and when decrement factor is 1.8, the revised benefit draining time is 2000/1.8 system clock.By this correction, can avoid predicting the unreasonable data occurred, prevent the topics such as device damage because unreasonable data cause and security incident.
Preferably, travel control device also comprises: steady working condition data obtaining module, for after carrying out steady state until the pumping stroke of serial oil cylinders, and actual conditions information during acquisition steady state and benefit draining time; Memory module, for being stored into actual conditions information during steady state and benefit draining time in database.In this way, can, in the process of equipment use and wearing and tearing, at any time by the work information closest to current device state of wear, with the benefit draining time etc. corresponding with this work information, be stored in this database, in order to using in the future.Like this, can constantly upgrade and improve database, thus utilize this database to form the expert system being directed to this equipment, and this patent system can according to the service time of equipment and abrasion condition, carry out real-time update, find the benefit draining time the most close with current actual conditions information with the fastest degree from lane database, make pumping stroke complete adjustment within the time of optimum, substantially reduce regulating time.
Preferably, actual conditions information comprises rate of pumping and engine speed.
As a third aspect of the present invention, please refer to Fig. 3 and Fig. 4, provide a kind of travel control system of serial oil cylinders, comprising: two pumping oil cylinders, 1, two pumping oil cylinders 1 are connected in series; Proximity switch 2, for detecting the stroke of two pumping oil cylinders 1; Mend oil drain valve 3, be connected with two pumping oil cylinders 1, for repairing and the draining of two pumping oil cylinders 1; Controller, be connected with proximity switch 2, for searching the prestore work information corresponding with actual conditions information according in the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances of not carrying out in database, after obtaining the benefit draining time corresponding with the work information that prestores, according to mending the benefit draining operating time of mending oil drain valve 3 in draining time controling pumping circulation subsequently.
Preferably, controller also for: when database is empty, using first scheduled time as the work information that prestores.
Preferably, controller also for: according to actual conditions information and the difference that prestores between work information, and obtain mending the draining time according to difference.
Preferably, controller also for: after the pumping stroke of serial oil cylinders carries out steady state, obtain steady state time actual conditions information and mend the draining time, and by actual conditions information during steady state and mend the draining time be stored in database.
Preferably, as shown in Figure 4, in the present embodiment, compared with prior art, in pumping oil circuit, add a pressure transducer 6, it for reading pumping pressure, and is sent to controller, the pumping pressure that controller is received is conbined usage together with the engine rotational speed signal read from engine rotation speed sensor, for stroke adjustment.
When database is not empty, the present invention pumping stroke abnormal need regulate time, mending the oil drain valve opening time is not progressively increase from fixing initial value (such as 500 system clocks), but by present engine rotating speed, close operating mode engine speed in pumping pressure and database, pumping pressure contrasts, the reinforcing and reducing methods oil time corresponding with current actual conditions information in reference data storehouse, carry out COMPREHENSIVE CALCULATING and prediction, under obtaining current working, mend the best opening time of oil drain valve, or the benefit draining time through revising, the stroke adjustment time is shortened greatly, extend piston working life.By to the continuous renewal of database and maintenance, stroke adjustment is made to be provided with adaptation function, can with equipment because of after using for a long time, leaking increases the stroke adjustment caused and changes and adapt.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on network that multiple computing device forms, alternatively, they can realize with the executable program-code of computing device, thus, they can be stored and be performed by computing device in the storage device, or they are made into each integrated circuit module respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a stroke control method for serial oil cylinders, is characterized in that, comprising:
Obtain and do not carrying out the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances;
In database, the prestore work information corresponding with described actual conditions information is searched according to described actual conditions information;
Obtain the benefit draining time corresponding with the described work information that prestores;
According to the benefit draining operating time in described benefit draining time controling pumping circulation subsequently;
Wherein, described actual conditions information comprises system pressure, rate of pumping and engine speed.
2. the stroke control method of serial oil cylinders according to claim 1, is characterized in that, before obtaining the benefit draining time corresponding with the described work information that prestores, described method also comprises:
When described database is empty, using first scheduled time as the described work information that prestores.
3. the stroke control method of serial oil cylinders according to claim 2, is characterized in that, the acquisition benefit draining time corresponding with the described work information that prestores comprises:
Revise to obtain the described benefit draining time to described first scheduled time.
4. the stroke control method of serial oil cylinders according to claim 1, is characterized in that, the acquisition benefit draining time corresponding with the described work information that prestores comprises:
According to described actual conditions information and the described difference prestored between work information;
The described benefit draining time is obtained according to described difference.
5. the stroke control method of serial oil cylinders according to claim 4, is characterized in that, when the described benefit draining time exceeds allowed band, revises the described benefit draining time, to obtain the revised benefit draining time.
6. the stroke control method of serial oil cylinders according to any one of claim 1 to 5, is characterized in that, after according to the benefit draining operating time in described benefit draining time controling pumping circulation subsequently, also comprises:
After the pumping stroke of described serial oil cylinders carries out steady state, actual conditions information when obtaining described steady state and mend the draining time;
Actual conditions information during described steady state and benefit draining time are stored in described database.
7. the stroke control method of serial oil cylinders according to claim 6, is characterized in that, with actual conditions information during described steady state and mend the draining time and be stored into the opening direction information of mending oil drain valve in addition in described database simultaneously.
8. a travel control device for serial oil cylinders, is characterized in that, comprising:
Actual conditions data obtaining module, is not carrying out mending the actual conditions information in the one or more pumping circulation under draining operational circumstances for obtaining;
Search module, for searching the prestore work information corresponding with described actual conditions information according to described actual conditions information in database;
Computing module, for obtaining the benefit draining time corresponding with the described work information that prestores;
Control module, for according to the benefit draining operating time in described benefit draining time controling pumping circulation subsequently;
Wherein, described actual conditions information comprises pumping system pressure, rate of pumping and engine speed.
9. the travel control device of serial oil cylinders according to claim 8, is characterized in that, described travel control device also comprises:
First puocessing module, for being empty at described database, using first scheduled time as the described work information that prestores.
10. the travel control device of serial oil cylinders according to claim 8, is characterized in that, described computing module comprises:
Difference calculating module, for according to described actual conditions information and the described difference prestored between work information;
Time Calculation module, for obtaining the described benefit draining time according to described difference.
The travel control device of 11. serial oil cylinders according to claim 10, is characterized in that, described computing module also comprises:
Correcting module, for when the described benefit draining time exceeds allowed band, revises the described benefit draining time, to obtain the revised benefit draining time.
The travel control device of the serial oil cylinders according to any one of 12. according to Claim 8 to 11, is characterized in that, described travel control device also comprises:
Steady working condition data obtaining module, for after carrying out steady state until the pumping stroke of described serial oil cylinders, actual conditions information when obtaining described steady state and mend the draining time;
Memory module, for being stored into actual conditions information during described steady state and benefit draining time in described database.
The travel control system of 13. 1 kinds of serial oil cylinders, is characterized in that, comprising:
Two pumping oil cylinders (1), described two pumping oil cylinders (1) are connected in series;
Proximity switch (2), for detecting the stroke of described two pumping oil cylinders (1);
Mend oil drain valve (3), be connected with described two pumping oil cylinders (1), for repairing and the draining of described two pumping oil cylinders (1);
Controller, be connected with described proximity switch (2), for searching the prestore work information corresponding with described actual conditions information according in the actual conditions information in the one or more pumping circulation under benefit draining operational circumstances of not carrying out in database, after obtaining the benefit draining time corresponding with the described work information that prestores, according to the benefit draining operating time of mending oil drain valve (3) described in described benefit draining time controling pumping circulation subsequently;
Wherein, described actual conditions information comprises pumping system pressure, rate of pumping and engine speed.
The travel control system of 14. serial oil cylinders according to claim 13, is characterized in that, described controller also for:
When described database is empty, using first scheduled time as the described work information that prestores.
The travel control system of 15. serial oil cylinders according to claim 13, is characterized in that, described controller also for:
According to described actual conditions information and the described difference prestored between work information, and obtain the described benefit draining time according to described difference.
16., according to claim 13 to the travel control system of the serial oil cylinders according to any one of 15, is characterized in that, described controller also for:
After the pumping stroke of described serial oil cylinders carries out steady state, actual conditions information when obtaining described steady state and mend the draining time, and by actual conditions information during described steady state and mend the draining time and be stored in described database.
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| CN201310689563.1A CN103644174B (en) | 2013-12-16 | 2013-12-16 | The stroke control method of serial oil cylinders, device and system |
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| CN201310689563.1A CN103644174B (en) | 2013-12-16 | 2013-12-16 | The stroke control method of serial oil cylinders, device and system |
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| CN105317788B (en) * | 2014-07-25 | 2017-12-05 | 中联重科股份有限公司 | Concrete pumping equipment, the travel control system of serial oil cylinders, method and apparatus |
| CN111577708B (en) * | 2020-04-27 | 2022-05-20 | 中联重科股份有限公司 | Hydraulic oil cylinder piston stroke control method, equipment and system and hydraulic machine |
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|---|---|---|---|---|
| JPS60101302A (en) * | 1983-11-07 | 1985-06-05 | Hitachi Constr Mach Co Ltd | Regenerator |
| JPH10299720A (en) * | 1997-04-30 | 1998-11-10 | Mitsubishi Heavy Ind Ltd | Working machine control device |
| JPH11181820A (en) * | 1997-12-18 | 1999-07-06 | Kobe Steel Ltd | Automatic operation device for hydraulic working machine |
| DE10256923B4 (en) * | 2002-12-05 | 2013-10-24 | Liebherr-France S.A. | Method and device for motion damping of hydraulic cylinders of mobile machines |
| CN101776107B (en) * | 2010-03-24 | 2012-05-30 | 中联重科股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN102705282B (en) * | 2012-06-28 | 2015-07-15 | 中联重科股份有限公司 | Concrete pumping equipment and travel control device and method for series oil cylinders |
| CN103148062B (en) * | 2013-03-19 | 2015-03-25 | 中联重科股份有限公司 | Stroke control system, method and device of cylinders in series |
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2013
- 2013-12-16 CN CN201310689563.1A patent/CN103644174B/en active Active
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