CN104847643B - Concrete pumping system reverse control method and corresponding control device for reversing - Google Patents
Concrete pumping system reverse control method and corresponding control device for reversing Download PDFInfo
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- CN104847643B CN104847643B CN201410806941.4A CN201410806941A CN104847643B CN 104847643 B CN104847643 B CN 104847643B CN 201410806941 A CN201410806941 A CN 201410806941A CN 104847643 B CN104847643 B CN 104847643B
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Abstract
The invention discloses a kind of concrete pumping system reverse control method and corresponding control device for reversing.Described concrete pumping system reverse control method includes time-commutate mode pattern, under described time-commutate mode pattern, determines commutating period based on Hydraulic System Oil pump discharge pressure and discharge capacity.Use concrete pumping system reverse control method and the control device for reversing of the present invention, under special circumstances (such as some fault), a kind of emergency measure can be taked to carry out commutation control, enable pumping system carry out commutation control with a kind of lame pattern before fault recovery.It is enable to continue construction, it is to avoid because construction is interrupted causing serious economic loss.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of concrete pumping system commutation control
Method processed and corresponding control device for reversing, in particular for concrete arm support pumper, Vehicle loaded pump, drag pump etc. its
He has the reverse control method of double-piston Dual-conveying tall cylinder pumping system and corresponding control device for reversing.
Background technology
Concrete pumping mechanism is the core institution of concrete mixer, is responsible for by concrete along conveyance conduit even
Continue and be pumped into cast scene.Concrete pumping structure is generally double-piston Dual-conveying tall cylinder pumping mechanism.This pumping
Mechanism utilizes two master cylinder alternations, and cylinder advance then another cylinder retreats, and will suck conveying cylinder successively
Concrete pump delivers to discharging opening.Two conveying cylinder same alternations under the driving of respective master cylinder, one
While sucking concrete, another pumps out concrete.Commutate when master cylinder moves to the stroke end
Action, now two conveying cylinders start counteragent, and the cylinder sucking concrete is changed into pump concrete, depends on
Secondary circulation work, thus pump out concrete continuously.
Commutation control is the core that pumping system controls, and the commutation of current concrete mixer is general uses automatically controlled changing
To mode.Which produces the signal of telecommunication by the position of detection master cylinder or detection conveying cylinder, thus relies on
The state of the signal of telecommunication changes the commutation controlling pumping system.Concrete detection mode is for using proximity switch or adopting
Pressure transducer with detection master cylinder pressure.
Concrete mixer long-term work is in severe working environment, and stream time is long.Pumping mechanism
Owing to vibration is big, working strength is big, causes pumping mechanism parts the most aging or produces fault.If be used for
The proximity switch of commutation or pressure transducer occur that short circuit, open circuit or sensor itself break down, existing
Some pumping system reverse flow techniques will cause pumping system not commutate, it is impossible to has continued construction, in pipeline
Remaining concrete cleaning timely cannot can cause plugging, will result in serious economic loss.Therefore, uncommon
Hope to have a kind of concrete pumping system reverse control method to overcome or at least alleviate the above-mentioned of prior art and lack
Fall into.
Summary of the invention
Pumping mechanism is the actuator of concrete mechanical equipment, for concrete is continuous along conveyance conduit
It is transported to cast scene.
Controller is the controller for concrete pumping system, can be programmable control module (PLC),
Or other any suitable control units.
It is an object of the invention to provide a kind of concrete pumping system reverse control method to overcome or at least
Alleviate the drawbacks described above of prior art.
For achieving the above object, the present invention provides a kind of concrete pumping system reverse control method, described
Concrete pumping system reverse control method includes time-commutate mode pattern, under described time-commutate mode pattern, and base
Commutating period is determined in Hydraulic System Oil pump discharge pressure and discharge capacity.
Preferably, every time after commutation, starting a new intervalometer, the timing of described intervalometer leads to
Cross the most stored data base of inquiry to determine, if timing arrives, then send commutation signal to commutation electromagnetism
Valve commutates, and wherein, in the database, timing and the outlet pressure of oil pump, discharge capacity are corresponding.
Preferably, when the outlet pressure of oil pump is more than or equal to setting threshold value, commutation signal is sent to commutation
Electromagnetic valve commutates.
Preferably, when the outlet pressure of oil pump is more than or equal to setting threshold value, the reality in next cycle is fixed
Time the time be set to the 90% to 98% of the timing obtained from data base querying.
Preferably, when the outlet pressure of oil pump is more than or equal to setting threshold value, the reality in next cycle is fixed
Time the time be set to the 94% to 96% of the timing obtained from data base querying.
Preferably, when detecting the sensing device line failure of pumping system pumping stroke, enter institute
State time-commutate mode pattern；When the sensing device circuit detecting pumping system pumping stroke is normal, exit described
Time-commutate mode pattern.
Preferably, described data base is when the sensing device circuit of pumping system pumping stroke is normal, logical
Cross detect, process and store the outlet pressure of oil pump, discharge capacity commutating period corresponding with reality and set up.
Preferably, the reality that described timing is the outlet pressure of oil pump, discharge capacity in described data base
The 90% to 95% of corresponding commutating period.
Preferably, described concrete pumping system reverse control method controlled by mode selector switch be
No with time-commutate mode mode operation.
The present invention also provides for a kind of control device for reversing, and described control device for reversing includes: pressure fuel pump passes
Sensor, is used for detecting Hydraulic System Oil pump discharge pressure；Reversing solenoid valve, for controlling the commutation of master cylinder；
And controller, it electrically connects with described pressure fuel pump sensor and reversing solenoid valve, receives described oil pump pressure
The pressure signal of force transducer detection, and receive the displacement signal of hydraulic system oil pump, and based on described pressure
Force signal and displacement signal determine commutating period, to export commutation signal.
Preferably, described control device for reversing farther includes sensing device circuit, described sensing device line
Road detection pumping system pumping stroke, and detection signal is sent to described controller, at detection pumping system
During the sensing device line failure of pumping stroke, described controller is believed based on described pressure signal and discharge capacity
Number determine commutating period；When the sensing device circuit detecting pumping system pumping stroke is normal, described control
Device determines commutating period based on pumping stroke signal.
Preferably, described control device for reversing farther includes mode selector switch, and the switching of described pattern is opened
Close electrically connect with described controller, in the case of described mode selector switch action, described controller based on
Described pressure signal and displacement signal determine commutating period.
Use concrete pumping system reverse control method and the control device for reversing of the present invention, in special feelings
Under condition (such as some fault), it is possible to take a kind of emergency measure to carry out commutation control, fault recovery it
Before enable pumping system to carry out commutation control with a kind of lame pattern.It is enable to continue to execute
Work, it is to avoid because construction is interrupted causing serious economic loss.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of concrete pumping system control device for reversing according to a first embodiment of the present invention.
Fig. 2 is the schematic diagram of concrete pumping system control device for reversing according to a second embodiment of the present invention.
Fig. 3 is the indicative flowchart of a kind of concrete pumping system reverse control method according to the present invention.
Fig. 4 is the schematic flow of the another kind of concrete pumping system reverse control method according to the present invention
Figure.
Reference:
| 1 | Pressure fuel pump sensor | 4 | Master cylinder |
| 2 | Controller | 5 | Mode selector switch |
| 3 | Reversing solenoid valve |
Detailed description of the invention
Clearer, below in conjunction with the present invention for the purpose making the present invention implement, technical scheme and advantage
Accompanying drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the present invention.At accompanying drawing
In, the most same or similar label represents same or similar element or has same or like function
Element.Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Below
It is exemplary by the embodiment being described with reference to the drawings, it is intended to be used for explaining the present invention, and it is not intended that
Limitation of the present invention.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the property made work premise, broadly falls into the scope of protection of the invention.Tie below
Close accompanying drawing embodiments of the invention are described in detail.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " front ",
The side of the instruction such as " afterwards ", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward "
Position or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention with
Simplify and describe rather than indicate or imply that the device of indication or element must have specific orientation, with specific
Azimuth configuration and operation, therefore it is not intended that limiting the scope of the invention.
Concrete pumping system reverse control method according to the present invention includes time-commutate mode pattern.Described
Under time-commutate mode pattern, determine commutating period based on Hydraulic System Oil pump discharge pressure and discharge capacity.Preferably,
Every time after commutation, starting a new intervalometer, the timing of described intervalometer is the most stored by inquiry
Data base determine, if timing arrives, then send commutation signal and commutate to reversing solenoid valve, its
In, in the database, timing and the outlet pressure of oil pump, discharge capacity are corresponding.
Control device for reversing according to the present invention includes: pressure fuel pump sensor, is used for detecting hydraulic system
Fuel pump outlet pressure；Reversing solenoid valve, for controlling the commutation of master cylinder；And controller, it is with described
Pressure fuel pump sensor and reversing solenoid valve electrical connection, receive the pressure letter of described pressure fuel pump sensor detection
Number, and receive the displacement signal of hydraulic system oil pump, and determine based on described pressure signal and displacement signal
Commutating period.And then export commutation signal according to described commutating period.
Use concrete pumping system reverse control method or the control device for reversing of the present invention, in special feelings
Under condition (such as some fault), it is possible to take a kind of emergency measure to carry out commutation control, fault recovery it
Before enable pumping system to carry out commutation control with a kind of lame pattern.It is enable to continue to execute
Work, it is to avoid because construction is interrupted causing serious economic loss.Lame pattern refers to reduce performance to realize merit
Can completely working method.
Fig. 1 is the signal of the control device for reversing of concrete pumping system according to a first embodiment of the present invention
Figure.The control device for reversing of the concrete pumping system shown in Fig. 1 includes pressure fuel pump sensor 1, controls
Device 2, reversing solenoid valve 3 and master cylinder 4.Master cylinder (or being referred to as pumping master cylinder) is control object:
When the piston movement of master cylinder is to 0 stroke and maximum travel position, it is necessary to be allowed to adverse movement.Described reversely
Motion, is that the liquid stream of rod chamber and rodless cavity by making master cylinder reversely realizes.
Pressure fuel pump sensor 1 is used for detecting Hydraulic System Oil pump discharge pressure, and by pressure signal transmission
To controller 2.It is understood that the concrete model of pressure fuel pump sensor 1, arranging position can root
Arrange according to needs, as long as it can detect the outlet pressure of oil pump.The pressure signal that detection obtains has three
Individual purposes.First purposes: be used for judging fuel pump outlet pressure whether beyond setting threshold value (build the pressure pressure),
Beyond when setting threshold value, send commutation signal.Second purposes: build during for running in the normal mode
Vertical data base, i.e. sets up fuel pump outlet pressure, discharge capacity and the mapping relations between commutating period.3rd use
On the way: under time-commutate mode pattern (i.e. assisting commutating mode), for coming together to determine commutating period with discharge capacity.
Controller 2 is connected with pressure fuel pump sensor 1, to receive fuel pump outlet pressure signal.Controller 2
Also switch (not shown, usually oil pump capacity gear on-off) is selected to be connected with oil pump capacity, to obtain
Oil pump capacity information.
Controller 2 is connected with reversing solenoid valve 3 further, to send commutation signal to reversing solenoid valve,
Commutate.It is pointed out that controller 2 can have two kinds of commutating mode: normal mode changed with the time
To pattern.Normal mode is stroke based on oil cylinder or commutates in position.Time-commutate mode pattern be based on
Time commutates.
Seeing Fig. 1, controller includes intervalometer and data base.It is pointed out that intervalometer is a kind of soft
The intervalometer that part form exists, is stored in director demon, for recording the journey time that master cylinder is each.
The timing of intervalometer is inquired about the most stored data base by controller and is determined, if timing arrives, then
Send commutation signal to commutate to reversing solenoid valve.
Data base also is stored in controller 2, for storing pumping system under different pressures and discharge capacity
Journey time.Such as, the form of data base can be as follows.
| Pressure fuel pump | Oil pump capacity | Journey time |
| P1 | Q1 | t1 |
| P1 | Q2 | t2 |
| P2 | Q1 | t3 |
| P2 | Q2 | t4 |
| …… | …… | …… |
Wherein, pressure fuel pump is the fuel pump outlet pressure that pressure fuel pump sensor 1 detects, oil pump capacity
For the oil pump capacity selected by oil pump capacity gear on-off.Journey time is under time-commutate mode pattern, with institute
State the oil cylinder stroke time that pressure fuel pump is corresponding with oil pump capacity, i.e. commutating period.It is understood that
The storage of data base can have various ways.
It is pointed out that and also be able to otherwise determine pressure fuel pump and oil pump capacity and oil cylinder row
The corresponding relation of journey time.For instance, it is possible to set up pressure fuel pump, oil pump capacity and between the oil cylinder stroke time
Functional relationship, then determine the oil cylinder stroke time by calculating such that it is able to save above-mentioned data base's
The storage time.The most such as, in one alternate embodiment, determining based on pressure fuel pump, oil pump capacity
After the oil cylinder stroke time, change with this oil cylinder stroke time determined all the time within follow-up multiple cycles
To, unless the fluctuation of pressure fuel pump exceedes setting threshold value or the change of oil pump capacity gear.
It is understood that actually detected to fuel pump outlet pressure and data base in the oil pump pressure of storage
When power there are differences, by actually detected to fuel pump outlet pressure and data base in closest to pressure fuel pump
Corresponding.In a preferred embodiment, when actually detected to fuel pump outlet pressure be in data base and deposit
Storage two pressure fuel pumps between time, by the actually detected fuel pump outlet pressure arrived with stored two oil pump pressures
One bigger in power corresponding.
It may also be noted that above-mentioned data base can be the data base preset before pumping equipment dispatches from the factory；
Can also is that the data base obtained in pumping equipment in use unceasing study, optimization.Below in conjunction with
The optimization of data base is simply introduced by following table with learning method.
| Pressure fuel pump | Oil pump capacity | Actual commutating period | Journey time |
| P1 | Q1 | T01 | t01 |
| P1 | Q1 | T02 | t02 |
| P1 | Q1 | T03 | t03 |
| P1 | Q1 | T04 | t04 |
| …… | …… | …… | …… |
When actual commutating period in table refers to work in the normal mode, corresponding to actual pressure fuel pump P1
Multiple actual commutating period with oil pump capacity Q1.And journey time referred to based on described actual commutating period
The not minor whole time with optimization.Following method specifically can be used to carry out learning and optimizing.
T01=T01；
T02=(t01+T02)/2；
T03=(t02+T03)/2；
T04=(t03+T04)/2；
……
Preferably, the reality that described timing is the outlet pressure of oil pump, discharge capacity in described data base
The 90% to 95% of border correspondence commutating period.Such as, t01=T01*95%；T02=(t01+T02) *
95%/2；……
Reversing solenoid valve 3 is controlled by controller 2, to control the commutation of master cylinder.For example, it is possible to pass through
Commutation battery valve controls hydraulic switching valve, and then controls the commutation of master cylinder.Every time after commutation, controller
2 start a new intervalometer, and the timing of described intervalometer is inquired about the most stored data by controller
Storehouse determines, if timing arrives, then sends commutation signal and commutates to reversing solenoid valve.Meanwhile, sentence
Whether oil-break pump discharge pressure is beyond setting threshold value (build the pressure pressure), when beyond setting threshold value, even if
It is not reaching to timing, also sends commutation signal.
Fig. 2 is the signal of the control device for reversing of concrete pumping system according to a second embodiment of the present invention
Figure.The control device for reversing of the concrete pumping system shown in Fig. 2 includes pressure fuel pump sensor 1, controls
Device 2, reversing solenoid valve 3, master cylinder 4 and mode selector switch 5.
It is to say, the control device for reversing of the control device for reversing of the second embodiment and first embodiment
Differ primarily in that, many mode selector switch 5.Mode selector switch 5 electrically connects with controller 2,
For switching commutating mode.Such as, when mode selector switch 5 is failure to actuate, low electricity is exported to controller 2
Flat, the respective pin suspension of controller 2, and when mode selector switch 5 action, export to controller 2
High level.
Advantageously, mode selector switch 5 is manually to handle switch.Pumping system break down and not
When can be normally carried out commutation work, mode selector switch can be switched to by operator from " normal mode "
" time-commutate mode pattern ", so that pumping system commutates, namely with " time-commutate mode pattern "
Saying, controller 2 will run under " time-commutate mode pattern ".
It is understood that mode selector switch 5 can be actual free-standing device, it is also possible to be soft
The button that part is virtual.Such as, in one embodiment, mode selector switch 5 is the behaviour of touch-control screen display
An icon on control interface.
It is pointed out that typically in the sensing device circuit generation event of detection pumping system pumping stroke
During barrier, switch to " time-commutate mode pattern ".Sensing device circuit generally includes travel switch (or close to opening
Close), pressure transducer (pressure in its detection rod chamber of master cylinder and rodless cavity) and its with control
The connection line of device.For commutation proximity switch or pressure transducer occur short circuit, open circuit or its
His fault, or the fault such as connection line accident ground connection, pumping system can not commutate under " normal mode ",
Construction can not have been continued.Thus need to use auxiliary reversing mode, enter " time-commutate mode pattern ".
The fault of sensing device circuit, can be with manual detection, it is also possible to automatically detect.Such as, control is worked as
Device is not received by commutation signal under pumping operating mode in setting duration, and this can determine that sensing device circuit
Break down.For example, it is assumed that generally under pumping operating mode, the maximum duration of single pumping stroke is Tmax,
But after 3 Tmax time, still it is not received by the signal that proximity switch sends, then judges
Proximity switch fault or proximity switch break down with the connection line of controller.
Fig. 3 is the indicative flowchart of a kind of concrete pumping system reverse control method according to the present invention.
Reverse control method shown in Fig. 3 comprises the steps.
Step 11: pumping starts.
Step 12: controller gathers pressure fuel pump signal and displacement signal.
Step 13: determine whether to use time-commutate mode pattern.As it was previously stated, can use any suitable
Mode determines whether to use time-commutate mode pattern.Advantageously, in the biography of detection pumping system pumping stroke
During induction device line failure, enter described time-commutate mode pattern；In detection pumping system pumping stroke
When sensing device circuit is normal, exit described time-commutate mode pattern.In one alternate embodiment, mould is passed through
Formula switching switch controls whether with time-commutate mode mode operation.
Step 14: if it is determined that do not use time-commutate mode pattern, then with normal commutation mode operation, meanwhile,
Record current oil pump pressure, discharge capacity and the pump time of correspondence.If necessary, pump time is entered
Row optimizes.Optimization method can use preceding method, it would however also be possible to employ other any suitable methods.
Step 15: if it is determined that use time-commutate mode pattern, then inquire about data base, determine timing.
Step 16: every time after commutation, start intervalometer.
Step 17: timing arrives, then commutate.
Fig. 4 is the schematic flow of the another kind of concrete pumping system reverse control method according to the present invention
Figure.Reverse control method shown in Fig. 4 comprises the steps.
Step 21: pumping starts.
Step 22: controller gathers pressure signal and the displacement signal of oil pump.
Step 23: determine whether to use time-commutate mode pattern.As it was previously stated, can use any suitable
Mode determines whether to use time-commutate mode pattern.Advantageously, in the biography of detection pumping system pumping stroke
During induction device line failure, enter described time-commutate mode pattern；In detection pumping system pumping stroke
When sensing device circuit is normal, exit described time-commutate mode pattern.
Step 24: if it is determined that do not use time-commutate mode pattern, then with normal commutation mode operation, meanwhile,
Record current oil pump pressure, discharge capacity and the pump time of correspondence.If necessary, pump time is entered
Row optimizes.Optimization method can use preceding method, it would however also be possible to employ other any suitable methods.
Step 25a: if it is determined that use time-commutate mode pattern, then, in the 20s of firmness pump, go to step
29b。
Step 25b: if passing through the 20s time period of firmness pump, then judge that pressure and discharge capacity are the most steady
Fixed, if unstable, then go to step 29b, otherwise go to step 26.
Step 26: according to pressure and discharge capacity, inquires about data base, determines timing.Preferably, described
Data base is when the sensing device circuit of pumping system pumping stroke is normal, by detection, processes and stores
The outlet pressure of oil pump, discharge capacity commutating period corresponding with reality and set up.Preferably, described data base
In the actual corresponding commutating period that described timing is the outlet pressure of oil pump, discharge capacity 90% to 95%.
In a preferred embodiment, after controller inquires the timing of data base, control can be contrasted
The time of the upper pump cycles that device processed recorded, the timing of data base is optimized, utilizes and optimize
After time carry out commutation control again.For example, it is possible to the time that this is inquired about and pump cycles time last time
Meansigma methods as commutating period.
Step 27: every time after commutation, start intervalometer.
Step 28: within the intervalometer timing period, whether detection pressure is more than building the pressure pressure, more than then turning
To step 29b,
Step 29a: if timing arrives, then commutate.
Step 29b: carry out the commutation that builds the pressure according to pressure.It is to say, the outlet pressure at oil pump is more than
In time setting threshold value, send commutation signal and commutate to reversing solenoid valve.Preferably, going out at oil pump
Mouth pressure is more than or more than or equal to equal to when setting threshold value (build the pressure pressure), by the actual timing in next cycle
Set of time is the 90% to 98% of the timing obtained from data base querying；It is highly preferred that be set to 94%
To 96%.
It is main auxiliary reversing mode that this invention uses based on time-commutate mode, and can by pumping system just
The journey time that time often, self study commutates every time, continues to optimize travel time data storehouse, can make the commutation cycle
Tend towards stability, reduce oil cylinder and build the pressure situation.
The method of this invention can be divided into 2 stages, and the first stage is that data base learns the stage.Data base
Middle storage is the oil cylinder stroke time value under different loads pressure, different oil pump capacity.In order to set up one
Relatively accurate data base, controller should learn journey time in advance when pumping system does not breaks down.Often
During the commutation of subnormal dependence proximity switch, record the oil cylinder stroke that present load pressure is corresponding with oil pump capacity
Time.When pumping system is normally operated under different loads pressure, different oil pump capacity, during whole stroke
Study is completed by spatial database.
Second stage is time-commutate mode mode phases.This stage system meeting entry time commutating mode, every time
After commutation, controller starts a new intervalometer, and timing is inquired about the most stored data by controller
Storehouse determines.If timing arrives, then send commutation signal and commutate to hydraulic switching valve.
The solution of the present invention is implemented can improve to concrete mixer the robustness of pumping system.Typically
For, pump truck can install proximity switch or pressure transducer within the pumping system for the detection that commutates, normally
In the case of gather proximity switch or pressure sensor signal by controller, then commutation control liquid when signal comes
Pressure electromagnetic valve.The described method of this invention pumping system just commonly using proximity switch or pressure transducer commutation time,
First learning time data base；If proximity switch breaks down, then user can pass through certain way entry time
Commutating mode.Now, controller can recall as timing using learning complete temporal database, starts
Intervalometer, pumping relies on timing to commutation every time.
But practical solution only there may be a kind of problem with timing commutation, if during timing in implementing
Between than actual oil cylinder long operational time, then oil cylinder piston run to the end, timing is also less than, hydraulic circuit
Pressure can steeply rise, occur building the pressure, now controller is come by the pressure fuel pump sensor values that collects
Judging that oil cylinder builds the pressure, if built the pressure, commutating.This reversing mode is more late than normal commutation mode, pressure
Impact also can be high, but can realize the purpose of commutation.
When just startup pumps soon, owing to not knowing the position of main oil cylinder piston, for the first time journey time
It is unpredictable, and the front rotating speed of gimbaled engine several times, load pressure be not the most stable, can only rely on and sentence
The disconnected mode of building the pressure commutates.Therefore controller must monitor pressure fuel pump sensor signal in the moment, works as pressure
More than certain threshold value, controller then thinks that building the pressure occurs in oil cylinder.To be pumped stable after, then use data base
Time commutates.
Generally, the present invention can be greatly enhanced the robustness of pumping system.After proximity switch fault,
Still pumping system can be made to work, be substantially reduced, for client, the economic loss that mechanical disorder causes.
Last it is noted that above example is only in order to illustrate technical scheme, rather than right
It limits.Although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make relevant art side
The essence of case departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a concrete pumping system reverse control method, it is characterised in that include time-commutate mode pattern,
Under described time-commutate mode pattern, determine commutating period based on Hydraulic System Oil pump discharge pressure and discharge capacity,
When detecting the sensing device line failure of pumping system pumping stroke, enter described time-commutate mode pattern.
2. concrete pumping system reverse control method as claimed in claim 1, it is characterised in that every
After secondary commutation, starting a new intervalometer, the timing of described intervalometer is the most stored by inquiry
Data base determines, if timing arrives, then sends commutation signal and commutates to reversing solenoid valve, wherein,
In the database, timing and the outlet pressure of oil pump, discharge capacity are corresponding.
3. concrete pumping system reverse control method as claimed in claim 1, it is characterised in that
The outlet pressure of oil pump, more than or equal to when setting threshold value, sends commutation signal and commutates to reversing solenoid valve.
4. concrete pumping system reverse control method as claimed in claim 3, it is characterised in that
The actual timing in next cycle, more than or equal to when setting threshold value, is set to from number by the outlet pressure of oil pump
According to the timing that library inquiry obtains 90% to 98%.
5. concrete pumping system reverse control method as claimed in claim 3, it is characterised in that
The actual timing in next cycle, more than or equal to when setting threshold value, is set to from number by the outlet pressure of oil pump
According to the timing that library inquiry obtains 94% to 96%.
6. concrete pumping system reverse control method as claimed in claim 2, it is characterised in that
When the sensing device circuit of detection pumping system pumping stroke is normal, exit described time-commutate mode pattern.
7. concrete pumping system reverse control method as claimed in claim 6, it is characterised in that institute
Stating data base is when the sensing device circuit of pumping system pumping stroke is normal, by detection, processes and deposits
Oil storage delivery side of pump pressure, discharge capacity commutating period corresponding with reality and set up.
8. concrete pumping system reverse control method as claimed in claim 7, it is characterised in that institute
State the actual corresponding commutating period that the described timing in data base is the outlet pressure of oil pump, discharge capacity
90% to 95%.
9. concrete pumping system reverse control method as claimed in claim 1, it is characterised in that logical
Cross mode selector switch to control whether with time-commutate mode mode operation.
10. a control device for reversing, it is characterised in that including:
Pressure fuel pump sensor (1), is used for detecting Hydraulic System Oil pump discharge pressure；
Reversing solenoid valve (3), is used for controlling the commutation of master cylinder (4)；And
Controller (2), it electrically connects with described pressure fuel pump sensor (1) and reversing solenoid valve (3),
Receive the pressure signal that described pressure fuel pump sensor (1) is detected, and receive the row of hydraulic system oil pump
Amount signal, and determine commutating period based on described pressure signal and displacement signal, in detection pumping system pumping
During the sensing device line failure of stroke, enter described time-commutate mode pattern.
11. control device for reversings as claimed in claim 10, it is characterised in that farther include sensing
Device circuit, described sensing device wireline inspection pumping system pumping stroke, and detection signal is sent to institute
State controller (2), when detecting the sensing device line failure of pumping system pumping stroke, described control
Device processed determines commutating period based on described pressure signal and displacement signal；In detection pumping system pumping stroke
When sensing device circuit is normal, described controller determines commutating period based on pumping stroke signal.
12. control device for reversings as claimed in claim 10, it is characterised in that farther include pattern
Switching switch (5), described mode selector switch (5) electrically connects with described controller (2), at described mould
In the case of formula switching switch (5) action, described controller (2) is believed based on described pressure signal and discharge capacity
Number determine commutating period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410806941.4A CN104847643B (en) | 2014-12-22 | 2014-12-22 | Concrete pumping system reverse control method and corresponding control device for reversing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410806941.4A CN104847643B (en) | 2014-12-22 | 2014-12-22 | Concrete pumping system reverse control method and corresponding control device for reversing |
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| Publication Number | Publication Date |
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| CN104847643A CN104847643A (en) | 2015-08-19 |
| CN104847643B true CN104847643B (en) | 2016-08-17 |
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| CN110173278A (en) * | 2019-04-29 | 2019-08-27 | 安百拓（南京）建筑矿山设备有限公司 | The pumping control method of wet-spraying machine |
| CN112524017B (en) * | 2020-12-24 | 2022-09-09 | 徐州徐工施维英机械有限公司 | Method and system for acquiring concrete pump reversing signals |
| CN114294211B (en) * | 2021-12-28 | 2024-03-12 | 徐州徐工施维英机械有限公司 | Emergency pumping method of electric control reversing concrete pump |
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