CN102410268A - Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device - Google Patents
Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device Download PDFInfo
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- CN102410268A CN102410268A CN2011103208614A CN201110320861A CN102410268A CN 102410268 A CN102410268 A CN 102410268A CN 2011103208614 A CN2011103208614 A CN 2011103208614A CN 201110320861 A CN201110320861 A CN 201110320861A CN 102410268 A CN102410268 A CN 102410268A
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Abstract
The invention provides a method and device for controlling a hydraulic oil cylinder, a pumping system and a concrete pumping device, which can be used for solving the problems of larger impact and vibration of an output adjusting mode of the concrete pump in the prior art to the device of the pumping system. The method comprises the steps of: controlling the acceleration of the hydraulic oil cylinder during advancing of the hydraulic oil cylinder; and/or controlling the acceleration of the hydraulic oil cylinder during returning of the hydraulic oil cylinder. By adopting the technical scheme of the invention, impact to the system can be reduced, and damage to the device can be reduced.
Description
Technical field
The present invention relates to hydraulic pressure Electrical Control Technology field, relate to a kind of method of controlling hydraulic jack and device and pumping system, concrete pumping equipment especially.
Background technique
The theoretical calculation of the concrete output side amount of concrete pump all adopts the method for theory side's amount of unit time pumping to calculate; At present; Concrete pump side's amount is regulated mainly and is realized through the maximum operational speed of regulating the pumping oil cylinder; Promptly through the mode of restriction main pump maximum pump discharge, be explained below in conjunction with Fig. 1, Fig. 1 is the schematic representation according to the basic structure of the pumping system of existing technology.
When starting automatic pumping, one of them electromagnet of hydraulicchange-over valve 3,4 gets electric, and pumping oil cylinder 5, oscillating oil cylinder 6 are in positive pump state; And an oil cylinder of pumping oil cylinder 5 stretches out; Another oil cylinder is return, up near switch 7 senders, and sender SC sigmal control electro-hydraulic reversing valve 4, electro-hydraulic reversing valve 3 switching-overs; So circulation, concrete is pumped continuously.When need are regulated output side's amount, set current value through the electric proportion electro-magnet 8 of regulating main pump 1, change the maximum output flow of main pump 1, thereby regulate the maximum operational speed of pumping oil cylinder 5, reach the purpose of regulating output side's amount.That is, the setting value of the current value of the adjusting of the output side of concrete pump amount through regulating electric proportion electro-magnet 8 is regulated.Concerning concrete pump; Particularly bigger concrete pump is measured by outlet pressure and output side; When pumping master cylinder motion switching-over; The switching-over buffer area is shorter, and system is prone to the thump that produces, big vibration, thereby causes problems such as system failure rate is high, equipment easily damaged parts (like concrete cylinder piston, glasses plate, the cutting ring etc.) life-span is short.
In the prior art, the output regulative mode of concrete pump has brought bigger shock and vibration to the equipment of pumping system, for this problem, does not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention provides a kind of method of controlling hydraulic jack and device and pumping system, concrete pumping equipment, the equipment of pumping system has been brought the problem of bigger shock and vibration with the output regulative mode that solves concrete pump of the prior art.
To achieve these goals, according to an aspect of the present invention, a kind of method of controlling hydraulic jack is provided.
The method of control hydraulic jack of the present invention comprises: in the process that hydraulic jack advances, control the acceleration of said hydraulic jack; And/or, in the process that said hydraulic jack is return, control the acceleration of said hydraulic jack.
According to a further aspect in the invention; A kind of device of controlling hydraulic jack is provided, has comprised the first acceleration adjustment module, and/or; The second acceleration adjustment module; Wherein: the said first acceleration adjustment module, be used for the process of advancing at hydraulic jack, control the acceleration of said hydraulic jack; The said second acceleration adjustment module is used for the process of returning at said hydraulic jack, controls the acceleration of said hydraulic jack.
According to another aspect of the invention, a kind of pumping system is provided, this pumping system comprises hydraulic jack, and comprises the device of control hydraulic jack of the present invention.
According to another aspect of the invention, a kind of concrete pumping equipment is provided, this concrete pumping equipment comprises the pumping system among the present invention.
According to technological scheme of the present invention; Through the regulator solution compressing cylinder advance or fallback procedures in acceleration; Help bucking-out system to impact; The rate of fault of reduction system, thus damage can be reduced to equipment, particularly help to alleviate the particularly damage of the equipment in the concrete pumping system of pumping system.
Description of drawings
Figure of description is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic representation according to the basic structure of the pumping system of existing technology;
Fig. 2 is the basic step schematic representation according to the method for the output flow of the adjusting pump of the embodiment of the invention;
Fig. 3 A is a kind of oil cylinder time-velocity curve according to the embodiment of the invention;
Fig. 3 B is the another kind of oil cylinder time-velocity curve according to the embodiment of the invention;
Fig. 4 A is the another oil cylinder time-velocity curve according to the embodiment of the invention;
Fig. 4 B is the another oil cylinder time-velocity curve according to the embodiment of the invention;
Fig. 5 is the schematic representation of apparatus according to the control hydraulic jack of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
In the present embodiment, regulate concrete delivery side of pump theory side and measure through regulating the acceleration of pumping oil cylinder 5 in the process of advancing, in the fall back process.Can only regulate in the process of advancing or fall back process in acceleration; Preferably; Can all regulate the two, referring to figs. 2 and 3 A and Fig. 3 B, Fig. 2 is the basic step schematic representation according to the method for the output flow of the adjusting pump of the embodiment of the invention; Fig. 3 A is a kind of oil cylinder time-velocity curve according to the embodiment of the invention, and Fig. 3 B is the another kind of oil cylinder time-velocity curve according to the embodiment of the invention.As shown in Figure 2, the adjusting for measure the output side of pumping system mainly comprises the steps:
Step S21: in the process that pumping oil cylinder 5 advances, the acceleration of control pumping oil cylinder 5;
Step S23: in the process that pumping oil cylinder 5 is return, the acceleration of control pumping oil cylinder 5.
Shown in Fig. 3 A, abscissa express time, y coordinate are represented the speed of pumping oil cylinder 5.In the present embodiment, regulating for the acceleration of pumping oil cylinder 5 can be to comprise: the acceleration of the accelerating process in the advancement stage, the acceleration of moderating process, return the acceleration of the accelerating process in the stage, the acceleration of moderating process.Can comprise in above-mentioned four types of acceleration one or more.With reference to figure 3A; The speed of pumping oil cylinder 5 and time relation are shown in curve 30A; Solid line 38,39 is represented the advancement stage of pumping oil cylinder respectively and returns the accelerating process in the stage that in dotted line 31 expression pumping oil cylinders 5 advancement stage, the slope of the speed of accelerating process is variable; As shown in arrow 33, promptly this brief acceleration is adjustable.Equally, dotted line 32 expression pumping oil cylinders 5 were return in the stage, and the slope of the speed of accelerating process is variable equally, and is as shown in arrow 34, and promptly this brief acceleration is adjustable.According to above-mentioned steps, can regulate the switching-over buffer area of pumping oil cylinder 5. Solid line 36,37 is represented pumping oil cylinder 5 advancement stage respectively and is return the moderating process in the stage; Its slope is adjustable equally; Shown in Fig. 3 B; The speed of pumping oil cylinder 5 and time relation are shown in curve 30B, and dotted line 36B and dotted line 37B represent that pumping oil cylinder 5 advancement stage and the slope of returning in the moderating process in the stage are variable, respectively shown in arrow 38 and 39.Among Fig. 3 A and Fig. 3 B, zone 35 expression switching-over buffer areas.Accelerating process when advancing, moderating process and accelerating process, moderating process when returning for pumping oil cylinder 5; Acceleration in these four processes is value separately; The size of acceleration absolute value can be the same or different, and that is to say for the acceleration of pumping oil cylinder 5 to control flexibly as required.
Acceleration for pumping oil cylinder 5 is regulated, and mainly is the electric current through the electric proportion electro-magnet 8 of regulating main pump 1 in the present embodiment, and when this electric current continued to increase, the output flow of main pump 1 continued to rise, thereby pumping oil cylinder 5 is quickened; When this electric current continued to reduce, the output flow of main pump 1 continued to descend, thereby pumping oil cylinder 5 is slowed down.
With reference to figure 1, according to the controlling method of present embodiment, to be controlled to be example in the accelerating process, each parts working procedure is following:
After automatic pumping starts, when pumping oil cylinder 5 moves near switch 7 positions, near switch 7 senders; At this moment, the electric proportion electro-magnet (not shown) of program control main pump 1 makes the electric current of electric proportion electro-magnet drop to minimum value by certain slope; After time-delay, electro-hydraulic reversing valve 4, electro-hydraulic reversing valve 3 switching-overs; The electric proportion electro-magnet of program control main pump 1 then; The ramp signal that makes the current value of electric proportion electro-magnet be certain slope rises to maximum value; Second oil cylinder of pumping oil cylinder 5 stretches out, first oil cylinder is return; And the speed of pumping oil cylinder 5 (i.e. the speed of first oil cylinder and second oil cylinder, and the two equates) increase gradually.
When need were regulated output side amount, the slope value of can regulate ramp signal was on the slope of certain slope the output flow of main pump 1 and rises, thereby the operation acceleration of pumping oil cylinder 5 is changed, and reaches the purpose that measure adjusting output side.The adjusting that is output side's amount of concrete pump is regulated through the acceleration (being the slope value of ramp signal) that the electric current of regulating electric proportion electro-magnet 8 rises.
In the present embodiment, can be under the situation of the acceleration of regulating pumping oil cylinder 5, the speed during to its stable state is made adjusting.Fig. 4 A is the another oil cylinder time-velocity curve according to the embodiment of the invention.Shown in Fig. 4 A, the velocity curve of straight line 40 expression pumping oil cylinders 5 when stable state.In the process of advancing of pumping oil cylinder 5, the stable state forward velocity that control pumping oil cylinder 5 reaches; In the process of returning of pumping oil cylinder 5, the stable state that control pumping oil cylinder 5 reaches is return speed.Adjustable-speed during stable state, promptly arrow 43 and the direction change shown in the arrow 44 can be pressed in the position of dotted line 41 and dotted line 42.Stable state forward velocity and stable state are return the size of speed can be inequality.Fig. 4 B is the another oil cylinder time-velocity curve according to the embodiment of the invention.Fig. 4 B shows pumping oil cylinder 5 to carry out in the moderating process in the stage also carrying out the situation that stable state forward velocity and stable state are return speed regulation under the situation that acceleration regulates with returning in advancement stage.The position of section dotted line of each among the figure can change by direction shown in the arrow on it.
More than made explanation for the speed regulation of the pumping oil cylinder in the pumping system.Technological scheme in the present embodiment can be applied to general hydraulic jack.Particularly for outlet pressure and the bigger hydraulic jack of inertia, adopt the technological scheme of present embodiment can reduce the shock and vibration that hydraulic jack produces effectively in system, help to prolong the life-span of each parts of equipment.
The device that regards to the embodiment of the invention is down explained.The embodiment of the invention provides a kind of device of controlling hydraulic jack, and is as shown in Figure 5, and Fig. 5 is the schematic representation of apparatus according to the control hydraulic jack of the embodiment of the invention.
With reference to figure 5, the device 50 of the control hydraulic jack of the embodiment of the invention mainly comprises the first acceleration adjustment module 51 and the second acceleration adjustment module 52.In realization, also can only have a module among the first acceleration adjustment module 51 and the second acceleration adjustment module 52.
The process that the first acceleration adjustment module 51 is used for advancing at hydraulic jack is controlled the acceleration of hydraulic jack; The process that the second acceleration adjustment module 52 is used for returning at hydraulic jack is controlled the acceleration of hydraulic jack.
Alternatively; The device 50 of control hydraulic jack comprises the first speed regulation module and/or second speed adjustment module (not shown); Wherein, the first speed regulation module is used for the process of advancing at hydraulic jack, the stable state forward velocity that the control hydraulic jack reaches; The second speed adjustment module is used for the process of returning at hydraulic jack, and the stable state that the control hydraulic jack reaches is return speed.
If control to concrete pumping system for example shown in Figure 1 or the pumping oil cylinder in other pumping systems; The electric current that the first acceleration adjustment module and the second acceleration adjustment module also can be used for controlling the electric proportion electro-magnet of the main pump in the pumping system continues to increase; Make the output flow of this main pump continue to rise, thereby pumping oil cylinder 5 is quickened; And the electric current of electric proportion electro-magnet of the main pump of control pumping system continues to reduce, and makes the output flow of this main pump continue to descend, thereby the pumping oil cylinder is slowed down.
Present embodiment also provides a kind of pumping system, and this pumping system comprises hydraulic jack, and comprises the device of the control hydraulic jack in the present embodiment.This pumping system can be a concrete pumping system.Present embodiment provides a kind of concrete pumping equipment again, and the concrete pumping system of this concrete pumping equipment adopts the pumping system in the present embodiment.For example, this concrete pumping equipment can be concrete mixer, concrete pump.
In the present embodiment, the acceleration in the accelerating process of pumping oil cylinder is regulated, can be obtained following beneficial effect:
1, main pump send system when switching-over, can eliminate system shock, reduces the rate of fault of system; Particularly high pressure, big flow system;
2, with the concrete pumping system be example; In general job site, the delivery operating time seldom, promptly concrete pump with time of the maximum side of output amount state work seldom; When then present embodiment being applied to concrete pumping system; The acceleration of regulating the concrete pumping oil cylinder can make concrete pumping oil cylinder piston lip stress deformation when starting less, reduces the wearing and tearing of concrete oil cylinder piston, has improved working life; When oscillating oil cylinder moved, the wearing and tearing meeting between glasses plate and the cutting ring descended because of the elimination of system shock, and concrete jet phenomenon can eliminate glasses plate and cutting ring and switch the time; So in the working life that can improve glasses plate and cutting ring, reduce the vibration of equipment simultaneously.Especially when pumping high viscosity concrete, effect is more obvious.
More than combine accompanying drawing that the technological scheme of present embodiment has been made explanation, wherein Fig. 1 shows a kind of Placement of pumping oil cylinder 5, and promptly the rod chamber of pumping oil cylinder 5 is connected with electro-hydraulic reversing valve 3, the rodless cavity interconnection of two oil cylinders of pumping oil cylinder 5.The technological scheme of present embodiment also is applicable to other Placements of pumping oil cylinder, and for example its rodless cavity is connected with electro-hydraulic reversing valve 3, the rod chamber interconnection of two oil cylinders.In general, for the oil cylinder of reciprocal operation, the speed if its unidirectional or two-way travel has the duration requirement during the stroke is not made the oil cylinder that limits, can adopt the technological scheme of present embodiment.In addition, the technological scheme of present embodiment also is applicable to the pumping oil cylinder in the pumping system of exporting other fluids, and is specially adapted to the pumping system of generous amount output.For this pumping system, after the technological scheme of using present embodiment is regulated its acceleration, can significantly reduce system shock, thereby reduce the loss of equipment.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single computing device; Perhaps be distributed on the network that a plurality of computing device forms, alternatively, they can be realized with the executable program-code of computing device; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit module respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by computing device.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of controlling hydraulic jack is characterized in that, comprising:
In the process that hydraulic jack advances, control the acceleration of said hydraulic jack; And/or,
In the process that said hydraulic jack is return, control the acceleration of said hydraulic jack.
2. the method for control hydraulic jack according to claim 1 is characterized in that,
Said method also comprises: in the process of advancing of said hydraulic jack, control the stable state forward velocity that said hydraulic jack reaches; And/or,
Said method also comprises: in the process of returning of said hydraulic jack, control the stable state that said hydraulic jack reaches and return speed.
3. the method for control hydraulic jack according to claim 1 and 2 is characterized in that, said hydraulic jack comprises the pumping oil cylinder in the pumping system.
4. the method for control hydraulic jack according to claim 3 is characterized in that,
The acceleration of controlling said hydraulic jack comprises: the electric current of electric proportion electro-magnet of controlling the main pump of said pumping system continues to increase, and makes the output flow of said main pump continue to rise, thereby said pumping oil cylinder is quickened; And/or,
The acceleration of controlling said hydraulic jack comprises: the electric current of electric proportion electro-magnet of controlling the main pump of said pumping system continues to reduce, and makes the output flow of said main pump continue to descend, thereby said pumping oil cylinder is slowed down.
5. the method for control hydraulic jack according to claim 3 is characterized in that, said pumping system is a concrete pumping system.
6. a device of controlling hydraulic jack is characterized in that, comprises the first acceleration adjustment module, and/or, the second acceleration adjustment module, wherein:
The said first acceleration adjustment module is used for the process of advancing at hydraulic jack, controls the acceleration of said hydraulic jack;
The said second acceleration adjustment module is used for the process of returning at said hydraulic jack, controls the acceleration of said hydraulic jack.
7. the device of control hydraulic jack according to claim 6 is characterized in that, also comprises the first speed regulation module, and/or, the second speed adjustment module, wherein:
The said first speed regulation module is used for the process of advancing at said hydraulic jack, controls the stable state forward velocity that said hydraulic jack reaches;
Said second speed adjustment module is used for the process of returning at said hydraulic jack, controls the stable state that said hydraulic jack reaches and returns speed.
8. according to the device of claim 6 or 7 described control hydraulic jacks, it is characterized in that,
Said hydraulic jack is the pumping oil cylinder in the pumping system;
The said first acceleration adjustment module and the second acceleration adjustment module also are used for:
The electric current of electric proportion electro-magnet of controlling the main pump of said pumping system continues to increase, and make the output flow of said main pump continue to rise, thereby said pumping oil cylinder is quickened, and,
The electric current of electric proportion electro-magnet of controlling the main pump of said pumping system continues to reduce, and makes the output flow of said main pump continue to descend, thereby said pumping oil cylinder is slowed down.
9. a pumping system comprises hydraulic jack, it is characterized in that, said pumping system comprises the device of claim 6,7 or 8 described control hydraulic jacks.
10. a concrete pumping equipment is characterized in that, comprises the described pumping system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103208614A CN102410268A (en) | 2011-10-20 | 2011-10-20 | Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103208614A CN102410268A (en) | 2011-10-20 | 2011-10-20 | Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device |
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| Publication Number | Publication Date |
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| CN102410268A true CN102410268A (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103208614A Pending CN102410268A (en) | 2011-10-20 | 2011-10-20 | Method and device for controlling hydraulic oil cylinder, pumping system and concrete pumping device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979693A (en) * | 2012-11-27 | 2013-03-20 | 长安大学 | Device capable of realizing continuous constant flow pumping of concrete and control method of device |
| CN104261132A (en) * | 2014-08-01 | 2015-01-07 | 深圳市顺昌龙商砼服务有限公司 | Full-automatic concrete conveying device and control method |
| CN105317667A (en) * | 2014-07-24 | 2016-02-10 | 中联重科股份有限公司 | Method and device for controlling pumping speed, pumping system and engineering machine |
| CN105626500A (en) * | 2014-10-27 | 2016-06-01 | 中联重科股份有限公司 | Material conveying control apparatus, system, method and engineering machine |
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| JPH01182312A (en) * | 1988-01-12 | 1989-07-20 | Nippon Oil & Fats Co Ltd | Novel transparent resin and transparent optical resin having high refractive index |
| CN1156795A (en) * | 1996-02-08 | 1997-08-13 | 余正 | Reciprocating motion and rotary motion gear type interchange mechanism |
| JPH1182312A (en) * | 1997-09-12 | 1999-03-26 | Furukawa Co Ltd | Hydraulically driven piston pump |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4399653A (en) * | 1980-03-14 | 1983-08-23 | Pylat Jr John A | Automatic adjusting deceleration control for a hydrostatically powered device |
| JPH01182312A (en) * | 1988-01-12 | 1989-07-20 | Nippon Oil & Fats Co Ltd | Novel transparent resin and transparent optical resin having high refractive index |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979693A (en) * | 2012-11-27 | 2013-03-20 | 长安大学 | Device capable of realizing continuous constant flow pumping of concrete and control method of device |
| CN102979693B (en) * | 2012-11-27 | 2015-08-19 | 长安大学 | A kind of device and controlling method thereof realizing the pumping of concrete continuous constant flow |
| CN105317667A (en) * | 2014-07-24 | 2016-02-10 | 中联重科股份有限公司 | Method and device for controlling pumping speed, pumping system and engineering machine |
| CN105317667B (en) * | 2014-07-24 | 2017-03-15 | 中联重科股份有限公司 | Rate of pumping control method, control device, pumping system and engineering machinery |
| CN104261132A (en) * | 2014-08-01 | 2015-01-07 | 深圳市顺昌龙商砼服务有限公司 | Full-automatic concrete conveying device and control method |
| CN105626500A (en) * | 2014-10-27 | 2016-06-01 | 中联重科股份有限公司 | Material conveying control apparatus, system, method and engineering machine |
| CN105626500B (en) * | 2014-10-27 | 2017-05-31 | 中联重科股份有限公司 | A kind of material conveying control device, system, method and engineering machinery |
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Application publication date: 20120411 |