CN104831930B - Pumping control method, device, system and concrete mixer - Google Patents
Pumping control method, device, system and concrete mixer Download PDFInfo
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- CN104831930B CN104831930B CN201410806505.7A CN201410806505A CN104831930B CN 104831930 B CN104831930 B CN 104831930B CN 201410806505 A CN201410806505 A CN 201410806505A CN 104831930 B CN104831930 B CN 104831930B
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Abstract
The invention discloses a kind of pumping control method, including：Receive the pressure value of oil pump in pumping；Judge the pressure value of oil pump whether more than pre-set threshold value；And if it is determined that the pressure value of oil pump is then controlled to the discharge capacity of oil pump according to the pressure value and pre-set threshold value of oil pump more than pre-set threshold value.Method according to embodiments of the present invention is by way of automatically controlling oil pump capacity, replace artificial termination of pumping, tear pipe inspection, this inconvenient processing mode of crawl pumping open, reduce the workload of service engineer scene investigation failure, and effectively prevent speed and build the pressure, so as to reducing infringement when oil cylinder builds the pressure to pumping system, it is to avoid the potential safety hazard of job site.The invention also discloses a kind of pumping control device, system and a kind of concrete mixer with the pumping control system.
Description
Technical field
The present invention relates to heavy-duty machinery systems technology field, more particularly to a kind of pumping control method, device, system and
A kind of concrete mixer with the control system.
Background technology
Concrete mixer in pumping procedure, pumping system vacation plugging phenomenon happen occasionally, i.e., this result in pumping fall speed,
Build the pressure, pump the phenomenons such as operating mode is unstable, have a strong impact on pump truck service life, site construction progress, become the peace of site operation
Full hidden danger.
At present, solve the problems, such as that such general fashion for pumping false plugging is exactly the inspection after the artificial termination of pumping of service engineer
Look into whether delivery pipe has plugging situation, if it is not, by artificial " crawl " operation pumping a period of time, continuing with just afterwards
Constant velocity carries out pumping work, and during this period, rate of pumping is constant always.
But the problem for existing is：(1) work of service engineer scene investigation failure is not only increased by the way
Measure, while also affecting construction speed；(2) carry out termination of pumping, tear open at the pumpings such as pipe inspection, crawl for false plugging (building the pressure) situation
Reason, it is cumbersome；(3) in detection process, as rate of pumping keeps constant, thus false plugging (building the pressure) phenomenon it is possible to
Occur.
The content of the invention
The purpose of the present invention is intended at least to solve to a certain extent one of technical problem in correlation technique.
For this purpose, first purpose of the present invention is to propose a kind of pumping control method.The method is by automatically controlling oil
The mode of pumpage, replaces artificial termination of pumping, tears pipe inspection, this inconvenient processing mode of crawl pumping open, effectively prevent
Fall speed and build the pressure, so as to reducing infringement when oil cylinder builds the pressure to pumping system, it is to avoid the potential safety hazard of job site.
Second object of the present invention is to propose a kind of pumping control device.
Third object of the present invention is to propose a kind of pumping control system.
Fourth object of the present invention is to propose a kind of concrete mixer.
To achieve these goals, the pumping control method of first aspect present invention embodiment, including：Receive oil in pumping
The pressure value of pump；Judge the pressure value of the oil pump whether more than pre-set threshold value；And if it is determined that the pressure value of the oil pump
More than the pre-set threshold value, then the discharge capacity of the oil pump is controlled according to the pressure value and the pre-set threshold value of the oil pump
System.
Pumping control method according to embodiments of the present invention, can receive the pressure value of oil pump in pumping, and judge oil pump
Whether pressure value is more than pre-set threshold value, if it is determined that the pressure value of oil pump is more than pre-set threshold value, then according to the pressure value of oil pump and
Pre-set threshold value is controlled to the discharge capacity of oil pump so that when there is false plugging (or building the pressure) situation, by automatically controlling oil pump
The mode of discharge capacity, replaces artificial termination of pumping, tears pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service engineering
The workload of teacher scene investigation failure, and effectively prevent speed and build the pressure, so as to reduce when oil cylinder builds the pressure to pumping system
The infringement of system, it is to avoid the potential safety hazard of job site.
According to one embodiment of present invention, the pressure value and the pre-set threshold value according to the oil pump is to the oil
The discharge capacity of pump is controlled and specifically includes：Pressure value, the pre-set threshold value and default current amplitude meter according to the oil pump
Calculate the amplitude of accommodation value that formula obtains electric proportional valve electric current；According to the amplitude of accommodation value of the electric proportional valve electric current to the oil pump
Discharge capacity be controlled.
Wherein, in an embodiment of the present invention, the default current amplitude computing formula is：Δ I=[(X-X0)/
(Imax-Imin)] * 100% wherein, X is the pressure value of oil pump described in the pumping, X0For the pre-set threshold value, ImaxFor described
The maximum current of electric proportional valve, IminFor the minimum current of the electric proportional valve.
According to one embodiment of present invention, the amplitude of accommodation value according to the electric proportional valve electric current is to the oil
The discharge capacity of pump is controlled and specifically includes：Electric proportional valve is controlled according to the amplitude of accommodation value of the electric proportional valve electric current, so that institute
Electric proportional valve control oil pump aperture is stated, the oil pump reduces the discharge capacity of the oil pump according to the oil pump aperture.
To achieve these goals, the pumping control device of second aspect present invention embodiment, including：Receiver module, uses
The pressure value of oil pump in pumping is received；Judge module, for judging the pressure value of the oil pump whether more than pre-set threshold value；With
And control module, during for being more than the pre-set threshold value in the pressure value for judging the oil pump, according to the pressure value of the oil pump
The discharge capacity of the oil pump is controlled with the pre-set threshold value.
Pumping control device according to embodiments of the present invention, the receiver module that can pass through in pumping control device receive pressure
Whether the pressure value of oil pump in the pumping that sensor is detected, judge module judge the pressure value of oil pump more than pre-set threshold value, control
Molding block when judge module judges that the pressure value of oil pump is more than pre-set threshold value, according to the pressure value and pre-set threshold value of oil pump to oil
The discharge capacity of pump is controlled so that when there is false plugging (or building the pressure) situation, by way of automatically controlling oil pump capacity, take
For artificial termination of pumping, tear pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service engineer scene investigation failure
Workload, and effectively prevent speed and build the pressure, so as to reduce infringement when oil cylinder builds the pressure to pumping system, it is to avoid
The potential safety hazard of job site.
According to one embodiment of present invention, the control module is specifically included：Acquiring unit, for according to the oil pump
Pressure value, the pre-set threshold value and default current amplitude computing formula obtain the amplitude of accommodation value of electric proportional valve electric current；Control
Unit processed, for being controlled to the discharge capacity of the oil pump according to the amplitude of accommodation value of the electric proportional valve electric current.
Wherein, in an embodiment of the present invention, the default current amplitude computing formula is：Δ I=[(X-X0)/
(Imax-Imin)] * 100% wherein, X is the pressure value of oil pump described in the pumping, X0For the pre-set threshold value, ImaxFor described
The maximum current of electric proportional valve, IminFor the minimum current of the electric proportional valve.
According to one embodiment of present invention, described control unit specifically for：According to the tune of the electric proportional valve electric current
Section range value control electric proportional valve, so that the electric proportional valve control oil pump aperture, the oil pump subtracts according to the oil pump aperture
The discharge capacity of few oil pump.
To achieve these goals, the pumping control system of third aspect present invention embodiment, including：Oil pump；Pressure is passed
Sensor, for detecting the pressure value of oil pump described in the pumping；And the pumping control dress of second aspect present invention embodiment
Put.
Pumping control system according to embodiments of the present invention, the receiver module that can pass through in pumping control device receive pressure
Whether the pressure value of oil pump in the pumping that sensor is detected, judge module judge the pressure value of oil pump more than pre-set threshold value, control
Molding block when judge module judges that the pressure value of oil pump is more than pre-set threshold value, according to the pressure value and pre-set threshold value of oil pump to oil
The discharge capacity of pump is controlled so that when there is false plugging (or building the pressure) situation, by way of automatically controlling oil pump capacity, take
For artificial termination of pumping, tear pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service engineer scene investigation failure
Workload, and effectively prevent speed and build the pressure, so as to reduce infringement when oil cylinder builds the pressure to pumping system, it is to avoid
The potential safety hazard of job site.
According to one embodiment of present invention, the pumping control system also includes：Electric proportional valve, the electric proportional valve are used
In control oil pump aperture；The oil pump is for the discharge capacity according to the oil pump aperture reduction oil pump.
To achieve these goals, the concrete mixer of fourth aspect present invention embodiment, including：Third aspect present invention
The pumping control system of embodiment.
Concrete mixer according to embodiments of the present invention, can pass through pumping control system in, in pumping control device
Receiver module receives the pressure value of oil pump in the pumping that detects of pressure sensor, and whether judge module judges the pressure value of oil pump
More than pre-set threshold value, control module when judge module judges that the pressure value of oil pump is more than pre-set threshold value, according to the pressure of oil pump
Value and pre-set threshold value are controlled to the discharge capacity of oil pump so that when there is false plugging (or building the pressure) situation, by automatically controlling
The mode of oil pump capacity, replaces artificial termination of pumping, tears pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service
The workload of engineer scene investigation failure, and effectively prevent speed and build the pressure, so as to reduce when oil cylinder builds the pressure to pump
Send the infringement of system, it is to avoid the potential safety hazard of job site.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
It is substantially and easy to understand, wherein,
Fig. 1 is the flow chart of pumping control method according to an embodiment of the invention；
Fig. 2 is the flow chart of pumping control method in accordance with another embodiment of the present invention；
Fig. 3 is the structural representation of pumping control device according to an embodiment of the invention；
Fig. 4 is the structural representation of control module according to an embodiment of the invention；
Fig. 5 is the structural representation of pumping control system according to an embodiment of the invention；And
Fig. 6 is the structural representation of pumping control system in accordance with another embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In flow chart or here any process described otherwise above or method description are construed as, expression includes
It is one or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein the suitable of shown or discussion can not be pressed
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Below with reference to the accompanying drawings pumping control method according to embodiments of the present invention, device, system are described and there is the pumping
The concrete mixer of control system.
Fig. 1 is the flow chart of pumping control method according to an embodiment of the invention.As shown in figure 1, the pumping is controlled
Method can include：
S101, receives the pressure value of oil pump in pumping.
Wherein, in an embodiment of the present invention, in pumping, the pressure value of oil pump can be obtained by pressure sensor, i.e. pressure
Sensor can in real-time detection pumping oil pump pressure, and the pressure value for detecting is carried out into Real-time Feedback.
Whether S102, judge the pressure value of oil pump more than pre-set threshold value.
Wherein, in an embodiment of the present invention, it is maximum pumping pressure value that pre-set threshold value is appreciated that, i.e., in normal pumping
In the case of, the pressure value that oil pump maximum can reach.
Specifically, the pressure value of the current oil pump for receiving can be contrasted with maximum pumping pressure value, that is, is judged oil
Whether the current pressure value of pump is more than maximum pumping pressure value.It should be appreciated that in an embodiment of the present invention, if it is determined that oil pump
Pressure value be less than or equal to pre-set threshold value, then the pressure of oil pump detected by pressure sensor in can continuing to pump
Value.That is, when the pressure value for judging oil pump is less than or equal to pre-set threshold value, pressure sensor can continue in detection pumping
The pressure of oil pump.
S103, if it is determined that the pressure value of oil pump is more than pre-set threshold value, the then pressure value and pre-set threshold value pair according to oil pump
The discharge capacity of oil pump is controlled.
Specifically, when the pressure value for judging oil pump is more than pre-set threshold value, can determine that now oil pump is in the state that builds the pressure, i.e.,
Pump truck normally cannot be pumped, and the pressure ascensional range size of oil pump, and root can be obtained according to the pressure value of oil pump and pre-set threshold value
The electric current of electric proportional valve is adjusted according to the pressure ascensional range size, so that the discharge capacity of oil pump declines.Wherein, in the present invention
Embodiment in, building the pressure can be regarded as concrete pump hydraulic system working connection pressure and is significantly larger than normal value.
Specifically, in one embodiment of the invention, can be according to the pressure value of oil pump, pre-set threshold value and default electricity
Stream amplitude computing formula obtains the amplitude of accommodation value of electric proportional valve electric current, and according to the amplitude of accommodation value of electric proportional valve electric current to oil
The discharge capacity of pump is controlled.Wherein, in an embodiment of the present invention, default current amplitude computing formula can be：
Δ I=[(X-X0)/(Imax-Imin)] * 100% (1)
Wherein, X be pumping in oil pump pressure value, X0For pre-set threshold value, ImaxFor the maximum current of electric proportional valve, IminFor
The minimum current of electric proportional valve.
Specifically, the pressure value of pre-set threshold value and the oil pump for receiving can be substituted into above-mentioned formula (1) and electric ratio is obtained
The amplitude of accommodation value (numerical value that electric proportional valve electric current i.e. to be regulated declines) of valve electric current, and according to the regulation of the electric proportional valve electric current
The discharge capacity of range value control oil pump.In an embodiment of the present invention, according to the amplitude of accommodation value of electric proportional valve electric current to oil pump
What discharge capacity was controlled implements process is：Electric proportional valve is controlled according to the amplitude of accommodation value of electric proportional valve electric current, so that electric
Proportional valve control oil pump aperture, oil pump reduce the discharge capacity of oil pump according to oil pump aperture.
That is, the amplitude of accommodation value that can control electric proportional valve according to electric proportional valve electric current is so that the electric current of electric proportional valve
Decline, electric proportional valve declines situation control oil pump aperture according to the electric current, oil pump reduces the discharge capacity of oil pump according to the oil pump aperture.
Thus, after oil pump capacity decline, in pumping, the pressure of oil pump also can decline immediately, it is therefore prevented that fall the generation of fast phenomenon, together
When build the pressure.
It should be noted that the pumping control method of the embodiment of the present invention can be by pulse regulation mode to oil pump discharge capacity
It is adjusted control.Specifically, while the amplitude of accommodation value according to electric proportional valve electric current is controlled to the discharge capacity of oil pump,
Oil pump capacity carries out self-regulation further according to actual loading situation, in discharge capacity self-regulating process if any build the pressure situation when, the present invention
The pumping control method of embodiment can continue Displacement Regulation, and pulse regulation control is so repeated, and reach the false plugging of solution existing
The purpose of elephant, falls speed and builds the pressure, so as to reduce damage during stifled pump to pump truck system caused by effectively preventing false plugging phenomenon
Degree.
Pumping control method according to embodiments of the present invention, can receive the pressure value of oil pump in pumping, and judge oil pump
Whether pressure value is more than pre-set threshold value, if it is determined that the pressure value of oil pump is more than pre-set threshold value, then according to the pressure value of oil pump and
Pre-set threshold value is controlled to the discharge capacity of oil pump so that when there is false plugging (or building the pressure) situation, by automatically controlling oil pump
The mode of discharge capacity, replaces artificial termination of pumping, tears pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service engineering
The workload of teacher scene investigation failure, and effectively prevent speed and build the pressure, so as to reduce when oil cylinder builds the pressure to pumping system
The infringement of system, it is to avoid the potential safety hazard of job site.
In order that those skilled in the art can more clearly understand the present invention, will be exemplified below.
For example, as shown in Fig. 2 pressure sensor can real-time detection oil pump pressure value X, and by the pressure for detecting
Value X is fed back (S201).First, can receive pressure sensor feedback pressure value X (S202), and by pressure value X with it is pre-
If threshold values (the i.e. Pressure maximum value X of oil pump0) contrasted (S203).Afterwards, can determine whether pressure value X of oil pump whether more than oil
The Pressure maximum value X of pump0(S204), if it is not, then pressure sensor continues the pressure value for detecting and feeding back oil pump；If it is,
Then can determine that, and according to the pressure of current oil pump
Force value X, Pressure maximum value X0Required drop-out current range value when calculating Displacement Regulation with default current amplitude computing formula
(S206).Then, electric proportional valve drop-out current range value control oil pump aperture (S207) according to needed for electric proportional valve, finally, oil
Discharge capacity (S208) of the pump according to oil pump aperture control oil pump.
In order to realize above-described embodiment, the invention allows for a kind of pumping control device.
Fig. 3 is the structural representation of pumping control device according to an embodiment of the invention.As shown in figure 3, the pumping
Control device can include：Receiver module 110, judge module 120 and control module 130.
Specifically, receiver module 110 can be used for the pressure value for receiving oil pump in pumping.Wherein, in embodiments of the invention
In, in pumping, the pressure value of oil pump can be obtained by pressure sensor, i.e., pressure sensor can oil pump in real-time detection pumping
Pressure, and the pressure value for detecting is carried out into Real-time Feedback.
Whether judge module 120 can be used for the pressure value for judging oil pump more than pre-set threshold value.Wherein, in the enforcement of the present invention
In example, it is maximum pumping pressure value that pre-set threshold value is appreciated that, i.e., in the case of normal pumping, the pressure that oil pump maximum can reach
Force value.
More specifically, the pressure value of the current oil pump for receiving can be carried out by judge module 120 with maximum pumping pressure value
Whether contrast, that is, judge the current pressure value of oil pump more than maximum pumping pressure value.It should be appreciated that in embodiments of the invention
In, if it is determined that the pressure value of oil pump is less than or equal to pre-set threshold value, then receiver module 110 passes through pressure in can continuing to pumping
The pressure value of the oil pump that force snesor is detected.That is, when the pressure value for judging oil pump is less than or equal to pre-set threshold value,
Pressure sensor can continue the pressure for detecting oil pump in pumping.
Control module 130 can be used for when the pressure value for judging oil pump is more than pre-set threshold value, according to the pressure value of oil pump and
Pre-set threshold value is controlled to the discharge capacity of oil pump.More specifically, when judge module 120 judges the pressure value of oil pump more than default valve
During value, control module 130 can determine that now oil pump normally cannot be pumped in build the pressure state, i.e. pump truck, can be according to the pressure of oil pump
Force value and pre-set threshold value obtain the pressure ascensional range size of oil pump, and according to the pressure ascensional range size to electric proportional valve
Electric current is adjusted, so that the discharge capacity of oil pump declines.Wherein, in an embodiment of the present invention, build the pressure and can be regarded as concrete pump
Main oil way of hydraulic system pressure is significantly larger than normal value.
Specifically, in one embodiment of the invention, as shown in figure 4, the control module 130 may include acquiring unit
131 and control unit 132.More specifically, acquiring unit 131 can be used for pressure value according to oil pump, pre-set threshold value and default
Current amplitude computing formula obtains the amplitude of accommodation value of electric proportional valve electric current.Wherein, in an embodiment of the present invention, default electricity
Stream amplitude computing formula is：
Δ I=[(X-X0)/(Imax-Imin)] * 100%
Wherein, X be pumping in oil pump pressure value, X0For pre-set threshold value, ImaxFor the maximum current of electric proportional valve, IminFor
The minimum current of electric proportional valve.
More specifically, the pressure value of pre-set threshold value and the oil pump for receiving can be substituted into above-mentioned formula (1) i.e. by acquiring unit 131
The amplitude of accommodation value (numerical value that electric proportional valve electric current i.e. to be regulated declines) of electric proportional valve electric current is obtained.
Control unit 132 can be used to be controlled the discharge capacity of oil pump according to the amplitude of accommodation value of electric proportional valve electric current.Tool
For body, in an embodiment of the present invention, control unit 132 can control electric ratio according to the amplitude of accommodation value of electric proportional valve electric current
Valve, so that electric proportional valve control oil pump aperture, discharge capacity of the oil pump according to oil pump aperture reduction oil pump.That is, control unit
132 can control amplitude of accommodation value of the electric proportional valves according to electric proportional valve electric current so that the electric current decline of electric proportional valve, electric proportional valve
Situation control oil pump aperture is declined according to the electric current, oil pump reduces the discharge capacity of oil pump according to the oil pump aperture.Thus, when oil pump is arranged
After amount declines, in pumping, the pressure of oil pump also can decline immediately, it is therefore prevented that fall the generation of fast phenomenon, while build the pressure being able to effectively
Alleviate.
Pumping control device according to embodiments of the present invention, can receive the pressure value of oil pump in pumping by receiver module,
Whether judge module judges the pressure value of oil pump more than pre-set threshold value, in judge module, control module judges that the pressure value of oil pump is big
When pre-set threshold value, the discharge capacity of oil pump is controlled according to the pressure value and pre-set threshold value of oil pump so that when the false plugging of generation
During (or building the pressure) situation, by way of automatically controlling oil pump capacity, replace artificial termination of pumping, to tear pipe inspection, crawl pumping open this
Inconvenient processing mode, reduces the workload of service engineer scene investigation failure, and effectively prevent speed and suppress
Pressure, so as to reducing infringement when oil cylinder builds the pressure to pumping system, it is to avoid the potential safety hazard of job site.
In order to realize above-described embodiment, the invention allows for a kind of pumping control system.
Fig. 5 is the structural representation of pumping control system according to an embodiment of the invention.As shown in figure 5, the pumping
Control system may include：Pumping control device 100, oil pump 200 and pressure sensor 300.Wherein, in embodiments of the invention
In, pumping control device 100 can be the pumping control device described in any of the above-described embodiment.It should be noted that of the invention
It is controller in pumping control system that " pumping control device " being related to is appreciated that.
Specifically, pressure sensor 300 can be used for the pressure value for detecting oil pump 200 in pumping.Pumping control device 100
Concrete function can refer to the concrete function description of the pumping control device described in any of the above-described embodiment, will not be described here.
Further, in one embodiment of the invention, as shown in fig. 6, the pumping control system may also include electric ratio
Example valve 400, electric proportional valve 400 can be used for control oil pump aperture.In an embodiment of the present invention, oil pump 200 can be used for according to oil
Pump aperture reduces the discharge capacity of oil pump 200.That is, pumping control device 100 can control electric proportional valve according to electric proportional valve electricity
So that the electric current of electric proportional valve declines, electric proportional valve 400 declines situation control oil pump according to the electric current and opens for the amplitude of accommodation value of stream
Degree, oil pump 200 reduce the discharge capacity of oil pump 200 according to the oil pump aperture.Thus, after oil pump capacity decline, oil pump in pumping
Pressure also can decline immediately, it is therefore prevented that fall the generation of fast phenomenon, while build the pressure.
Pumping control system according to embodiments of the present invention, the receiver module that can pass through in pumping control device receive pressure
Whether the pressure value of oil pump in the pumping that sensor is detected, judge module judge the pressure value of oil pump more than pre-set threshold value, control
Molding block when judge module judges that the pressure value of oil pump is more than pre-set threshold value, according to the pressure value and pre-set threshold value of oil pump to oil
The discharge capacity of pump is controlled so that when there is false plugging (or building the pressure) situation, by way of automatically controlling oil pump capacity, take
For artificial termination of pumping, tear pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service engineer scene investigation failure
Workload, and effectively prevent speed and build the pressure, so as to reduce infringement when oil cylinder builds the pressure to pumping system, it is to avoid
The potential safety hazard of job site.
In order to realize above-described embodiment, the invention allows for a kind of concrete mixer, including any of the above-described embodiment
Described pumping control system.
Concrete mixer according to embodiments of the present invention, can pass through pumping control system in, in pumping control device
Receiver module receives the pressure value of oil pump in the pumping that detects of pressure sensor, and whether judge module judges the pressure value of oil pump
More than pre-set threshold value, control module when judge module judges that the pressure value of oil pump is more than pre-set threshold value, according to the pressure of oil pump
Value and pre-set threshold value are controlled to the discharge capacity of oil pump so that when there is false plugging (or building the pressure) situation, by automatically controlling
The mode of oil pump capacity, replaces artificial termination of pumping, tears pipe inspection, this inconvenient processing mode of crawl pumping open, reduce service
The workload of engineer scene investigation failure, and effectively prevent speed and build the pressure, so as to reduce when oil cylinder builds the pressure to pump
Send the infringement of system, it is to avoid the potential safety hazard of job site.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be performed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realizing：With for the logic gates of logic function is realized to data-signal
Discrete logic, the special IC with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
Example ", or the description of " some examples " etc. mean specific features with reference to the embodiment or example description, structure, material or spy
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments or example described in this specification and different embodiments or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. it is a kind of to pump control method, it is characterised in that to comprise the following steps：
Receive the pressure value of oil pump in pumping；
Judge the pressure value of the oil pump whether more than pre-set threshold value；
It is if it is determined that the pressure value of the oil pump is more than the pre-set threshold value, then pressure value according to the oil pump, described default
Threshold values and default current amplitude computing formula obtain the amplitude of accommodation value of electric proportional valve electric current；
The discharge capacity of the oil pump is controlled according to the amplitude of accommodation value of the electric proportional valve electric current.
2. pumping control method as claimed in claim 1, it is characterised in that the default current amplitude computing formula is：
Δ I=[(X-X0)/(Imax-Imin)] * 100%
Wherein, X is the pressure value of oil pump described in the pumping, X0For the pre-set threshold value, ImaxFor the electric proportional valve most
High current, IminFor the minimum current of the electric proportional valve.
3. it is as claimed in claim 1 to pump control method, it is characterised in that the regulation according to the electric proportional valve electric current
Range value is controlled to the discharge capacity of the oil pump and specifically includes：
Electric proportional valve is controlled according to the amplitude of accommodation value of the electric proportional valve electric current, so that the electric proportional valve control oil pump is opened
Degree, the oil pump reduce the discharge capacity of the oil pump according to the oil pump aperture.
4. a kind of pumping control device, it is characterised in that include：
Receiver module, for receiving the pressure value of oil pump in pumping；
Judge module, for judging the pressure value of the oil pump whether more than pre-set threshold value；
Control module, during for being more than the pre-set threshold value in the pressure value for judging the oil pump, according to the pressure of the oil pump
Value and the pre-set threshold value are controlled to the discharge capacity of the oil pump, wherein, the control module is specifically included：
Acquiring unit, for being obtained according to the pressure value of the oil pump, the pre-set threshold value and default current amplitude computing formula
The amplitude of accommodation value of power taking proportioning valve electric current；
Control unit, for being controlled to the discharge capacity of the oil pump according to the amplitude of accommodation value of the electric proportional valve electric current.
5. pumping control device as claimed in claim 4, it is characterised in that the default current amplitude computing formula is：
Δ I=[(X-X0)/(Imax-Imin)] * 100%
Wherein, X is the pressure value of oil pump described in the pumping, X0For the pre-set threshold value, ImaxFor the electric proportional valve most
High current, IminFor the minimum current of the electric proportional valve.
6. pumping control device as claimed in claim 4, it is characterised in that described control unit specifically for：
Electric proportional valve is controlled according to the amplitude of accommodation value of the electric proportional valve electric current, so that the electric proportional valve control oil pump is opened
Degree, the oil pump reduce the discharge capacity of the oil pump according to the oil pump aperture.
7. a kind of pumping control system, it is characterised in that include：
Oil pump；
Pressure sensor, for detecting the pressure value of oil pump described in the pumping；And
Pumping control device as any one of claim 4 to 6.
8. pumping control system as claimed in claim 7, it is characterised in that also include：
Electric proportional valve, the electric proportional valve are used for control oil pump aperture；
The oil pump is for the discharge capacity according to the oil pump aperture reduction oil pump.
9. a kind of concrete mixer, it is characterised in that include：Pumping control system as any one of claim 7 to 8
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109579903B (en) * | 2018-11-16 | 2020-05-26 | 中联重科股份有限公司 | Method and device for diagnosing pipe blockage of concrete equipment |
| CN109781338A (en) * | 2019-01-24 | 2019-05-21 | 中建三局集团有限公司 | Concrete pumping monitors system and method |
| 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 |
| CN115013277B (en) * | 2022-06-20 | 2024-02-02 | 中联重科股份有限公司 | Method and device for determining pumpability of material and pumping control method and device |
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| KR20090077503A (en) * | 2008-01-11 | 2009-07-15 | 전진중공업(주) | Apparatus and method for fuel save in concrete pump car |
| CN102312827A (en) * | 2010-06-30 | 2012-01-11 | 中集车辆（集团）有限公司 | Concrete pump and pumping control device and pumping control method thereof |
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