CN107215804B - A kind of multiple spot single-acting jack synchro-lift system and control method - Google Patents
A kind of multiple spot single-acting jack synchro-lift system and control method Download PDFInfo
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- CN107215804B CN107215804B CN201710566473.1A CN201710566473A CN107215804B CN 107215804 B CN107215804 B CN 107215804B CN 201710566473 A CN201710566473 A CN 201710566473A CN 107215804 B CN107215804 B CN 107215804B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/22—Lazy-tongs mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of multiple spot single-acting jack synchro-lift system and control methods, including several jack and identical quantity variable-frequency control pump, it further include master controller, master controller includes processing module, pressure-detecting device and the displacement detector of memory module, pump oil speed for adjusting variable-frequency control pump according to a pressure instruction curve；After processing module in real time mutually binds the pressure value that pressure-detecting device detects with corresponding detection time point, generates pressure unit data and be stored in memory module；Processing module generates the pressure prediction matched curve of a smooth curve；Processing module compares pressure prediction matched curve and pressure instruction curve in real time, and processing module controls the pump oil speed of variable-frequency control pump, draws close the pressure value in pressure prediction matched curve to the pressure value of pressure instruction curve in the same time；Has the advantages that the stability and safety for finding in advance with modifying and improve system in advance to jack anomalous variation.
Description
Technical field
The present invention relates to jack control technology fields, more specifically, it relates to which a kind of multiple spot single-acting jack is same
Walk jacking system and control method.
Background technique
With the development of urban planning, need to be transformed some existing bridge layouts or plan again.Existing skill
The method translated in art by bridge, eliminates the waste reconstructed.During translating bridge, need to utilize
The process that multiple groups jack pair bridge integrally synchronizes election and landing.With building weight and volume increasingly
Greatly, and structure is complicated, load is unevenly distributed, so that the control precision jacked and control point is needed to increase, this requires hydraulic tops
The system of liter will can be realized Multipoint synchronous lifting while jacking works, also and retentivity is balanced, especially some engineerings
The space for allowing to place hydraulic lifting jack in construction is extremely limited, and conventional double-action jack can not be put into, though
Can be put into can not generate effective jacking displacement, the ultra-thin hydraulic lifting jack of single-acting can only be used, due to single-acting
Jack only has 1 oil inlet and outlet, it how to be made to synchronize uniformly landing under band case of heavy load into difficult point.
A kind of three-truss continuous steel truss girder pushing device is disclosed in the Chinese patent that notification number is CN101906755A
And its method for arranging, the device include three groups of left, center, right support construction, are respectively arranged with left and right side in this three groups of support constructions
Purlin slipway beam and middle purlin slipway beam, the front end of slipway beam are equipped with operating platform, and it is flat that horizontal continuity pushing tow jack is mounted on operation
On platform, four vertical jacks are respectively arranged in the front of left and right side purlin slipway beam and middle purlin slipway beam.It is vertical by four
Jack colludes step and elects or will fall bridge.
But conventionally, as the factors such as bridge weight and volume is big, structure is complicated, load is unevenly distributed lead to thousand
Jin push up practical moving distance and control instruction specify at a distance between there is a certain error.Especially for multiple spot single-acting hydraulic
The control difficulty that jack band carries synchronization lifting is bigger, puts forward higher requirement to control system.It is multiple very heavy in order to guarantee
The uniform force on top using the stress of certain each jack of sensing element senses, and is adjusted according to stress and is corresponded to
The lifting speed of jack, but when needing certain to the regulation of speed oil due to the analysis of master controller and to jack
Between, cause to regulate and control there are the delay of certain time the lifting speed of jack, the jack overweight to stress is easy to cause to make
It exerts a certain influence at damage, and to the stability and safety of the bridge in translation motion.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of multiple spot single-acting jack synchronization
Jacking system, by the variation tendency of the pressure value detected to pressure-detecting device, realization proposes jack anomalous variation
It is preceding to find and modify in advance, to achieve the purpose that the stability and safety of raising system.
To achieve the above object, the present invention provides following technical solutions：
A kind of multiple spot single-acting jack synchro-lift system, including several jack and identical quantity it is respectively each
The variable-frequency control pump of a jack fuel feeding further includes the master controller for controlling the pump oil speed of variable-frequency control pump, main control
Device include memory module, for according to a pressure instruction curve adjust variable-frequency control pump pump oil speed processing module, be used to
Detect the pressure-detecting device of jack oil pressure and for detecting the displacement detector of the displacement of jack institute top load；
It is raw after processing module in real time mutually binds the pressure value that pressure-detecting device detects with corresponding detection time point
At pressure unit data and it is stored in memory module；
Processing module reads several pressure unit data in memory module, generates one and passes through in the pressure unit data
Pressure value and detection time point and be smooth curve pressure prediction matched curve；
Processing module compares pressure prediction matched curve and pressure instruction curve in real time, in real-time time point presetting backward
In period, when the pressure value of pressure prediction matched curve and the pressure value of pressure instruction curve in the same time differ by more than predetermined model
When enclosing, processing module controls the pump oil speed of variable-frequency control pump, makes pressure value in pressure prediction matched curve to pressing in the same time
The pressure value of power instruction curve is drawn close.
By using above-mentioned technical proposal, processing module generates pressure according to the pressure unit data stored in memory module
Predict matched curve, and by pressure prediction matched curve and pressure instruction curve in real-time time point preset time period backward
Part be compared, i.e., the trend prediction according to this in trend and the following predetermined amount of time of comparison is generated according to existing data
The difference of pressure value the pump oil speed of variable-frequency control pump is adjusted by processing module after super preset range, keep pressure prediction quasi-
The pressure value closed on curve is drawn close to the pressure value of pressure instruction curve in the same time, is mentioned to reach to jack anomalous variation
It is preceding to find and modify in advance, improve the stability and safety of whole system.
Further, master controller further includes a display module, and processing module connects with signal with display module, handles mould
Block in real time by displacement detector detection displacement, pressure-detecting device detection pressure value, pressure prediction matched curve with
And pressure instruction curve is shown on display module.
By using above-mentioned technical proposal, keeps operator intuitive and more comprehensively monitor the lifting process of jack
And Parameters variation.
Further, display module includes a touching display screen, the position that processing module in real time detects displacement detector
Pressure value, pressure prediction matched curve and the pressure instruction curve that shifting amount, pressure-detecting device detect are shown in touch-control and show
On screen, the touch-control feedback command of processing module real-time reception touching display screen output simultaneously refers to according to touch-control feedback command modification pressure
Enable curve.
By using above-mentioned technical proposal, operator can easily be modified by touch-control touching display screen and be shown in touch-control
Pressure instruction curve on display screen, and have real-time display on touching display screen displacement detector detection displacement, pressure
Force checking device detection pressure value and pressure prediction matched curve reference with compare, keep entire modification process more clear
It is clear, intuitive and convenient, it is handling good.
Further, safety protective valve is installed at the oil inlet and outlet of jack.
By using above-mentioned technical proposal, when system or load generation chance failure, high pressure oil, which can pass through this, to be protected safely
Valve release is protected, whole safety is improved.
Further, balance is installed on the pipeline road of jack and carries valve.
By using above-mentioned technical proposal, the load pressure of the oil cylinder of valve balance jack is carried by balancing, carries band
The unlikely decompression of the oil cylinder of the jack of decline glides, and immediately closes cavity of resorption to No leakage, guarantees that workpiece will not freely glide, makes
Jack remains to reliably carry in power failure, and adjusts the speed state all in oil inlet when can guarantee jack lifting, improves and is
The safety and reliability of system.
In view of the deficienciess of the prior art, the purpose of the present invention two is to provide a kind of multiple spot single-acting jack synchronization
The control method of jacking system is realized different to jack by the variation tendency of the pressure value detected to pressure-detecting device
The discovery in advance often changed with modify in advance, to achieve the purpose that the stability and safety of raising system.
To achieve the above object, the present invention provides following technical solutions：
A kind of control method of multiple spot single-acting jack synchro-lift system, including：
It is raw after processing module in real time mutually binds the pressure value that pressure-detecting device detects with corresponding detection time point
At pressure unit data and it is stored in memory module；
Processing module reads several pressure unit data in memory module, generates one and passes through in the pressure unit data
Pressure value and detection time point and be smooth curve pressure prediction matched curve；
Processing module compares pressure prediction matched curve and pressure instruction curve in real time, in real-time time point presetting backward
In period, when the pressure value of pressure prediction matched curve and the pressure value of pressure instruction curve in the same time differ by more than predetermined model
When enclosing, processing module controls the pump oil speed of variable-frequency control pump, makes pressure value in pressure prediction matched curve to pressing in the same time
The pressure value of power instruction curve is drawn close.
By using above-mentioned technical proposal, jacking system generates pressure prediction fitting song according to the pressure unit data of acquisition
Line, and compare the pressure value and the pressure value of pressure instruction curve in the same time of pressure prediction matched curve, frequency conversion tune is controlled according to this
The pump oil speed of speed pump, reaches discovery in advance to jack anomalous variation and modifies in advance, to reach the steady of raising system
Qualitative and safety purpose.
Further, it is differed in the pressure value when pressure prediction matched curve with the pressure value of pressure instruction curve in the same time
When more than preset range, the method also includes：
Processing module is using the time point at corresponding moment as an abnormal time point, and by the abnormal time point and the pressure
Jack corresponding to power prediction matched curve numbers one after mutually bound as anomaly unit data deposit memory module
In exception record table.
By using above-mentioned technical proposal, by the time of the pressure value exception over range of pressure prediction matched curve each time
Point is recorded and is stored in the exception record table of memory module, convenient for the exception point in operating process and after construction
Analysis can carry out precise positioning and problem analysis according to anomaly unit data to emergency case.
Further, processing module in real time closes pressure prediction matched curve and pressure instruction curve in same Trends Sheet
In figure and it is shown on a display module.
By using above-mentioned technical proposal, pressure prediction matched curve and pressure instruction curve are closed in same Trends Sheet
It in figure and is shown on a display module, allows that operator more intuitively understands the variation of the two and mutual difference is walked
Gesture judges convenient for making timely and accurate adjustment to emergency case.
Further, instruction is towed by the pressure instruction curve generation in dragging Trends Sheet figure, processing module is according to dragging
Row instruction real time modifying pressure instruction curve.
By using above-mentioned technical proposal, realizes and showing pressure prediction matched curve and pressure by the way that Trends Sheet figure is synchronous
When power instructs curve, motoring pressure instruction curve is i.e. changeable directly in Trends Sheet figure is directly changed pressure instruction curve, makes
The operation of pressure instruction curve modification is more convenient, saves trouble, and under the control of pressure prediction matched curve, pressure instruction curve
Modification it is more intuitive, convenient.
Further, processing module pushes to Trends Sheet figure at one remote terminal in real time, by remote terminal to reception
To Trends Sheet figure in pressure instruction curve generate one modification instruct and be sent at processing module, processing module is according to modification
The practical pressure instruction curve for being used to control variable-frequency control pump pump oil speed of command synchronization modification.
By using above-mentioned technical proposal, operator can be monitored Trends Sheet figure in real time by remote terminal, and can
It remotely modifies to pressure instruction curve, departing from the limitation of distance, makes multiple spot single-acting jack synchronization lifting process
Monitoring and adjustment are more convenient.
Compared with prior art, it is an advantage of the invention that：
（1）Pressure prediction matched curve is generated by processing module, and according to pressure prediction matched curve and pressure instruction
The comparison of curve adjusts the pump oil speed of variable-frequency control pump in real time, makes the pressure value in pressure prediction matched curve in the same time
The pressure value of pressure instruction curve is drawn close, and is reached discovery in advance to jack anomalous variation and is modified in advance, is improved entire
The stability and safety of system；
（2）Processing module is in real time by the displacement of displacement detector detection, the pressure value of pressure-detecting device detection, pressure
Power prediction matched curve and pressure instruction curve are shown on display module, are kept operator intuitive and are more comprehensively supervised
Control the lifting process and Parameters variation of jack；
（3）Display module includes a touching display screen, the touch-control feedback of processing module real-time reception touching display screen output
It instructs and modifies pressure instruction curve according to touch-control feedback command, i.e., pressure instruction curve is directly modified by touch-control, make pressure
The entire modification process of instruction curve is more clear, is intuitive and convenient, handling good；
（4）Balance is installed on the pipeline road of jack and carries valve, the oil cylinder of valve balance jack is carried by balancing
Load pressure, so that the unlikely decompression of oil cylinder with the jack for carrying decline is glided, jack made to remain to reliably hold in power failure
State is adjusted the speed all in oil inlet when carrying, and can guarantee jack lifting, improves the safety and reliability of system；
（5）Operator can modify to pressure instruction curve by remote terminal, departing from the limitation of distance, make multiple spot
The monitoring of single-acting jack synchronization lifting process and adjustment are more convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the multiple spot single-acting jack synchro-lift system of the present embodiment；
Fig. 2 is single jack and variable-frequency control pump in the multiple spot single-acting jack synchro-lift system of the present embodiment
Connection schematic diagram；
Fig. 3 is the structural schematic diagram of the master controller of the present embodiment；
Fig. 4 is the structural schematic diagram of display module in the master controller of the present embodiment；
Fig. 5 is the flow diagram of the control method of the multiple spot single-acting jack synchro-lift system of the present embodiment.
Appended drawing reference：1, jack；2, variable-frequency control pump；21, superpressure oil pump；22, variable-frequency motor；23, frequency control
Device；3, master controller；31, memory module；32, processing module；33, display module；34, pressure-detecting device；35, displacement detecting
Device；36, communication module；4, pressure instruction curve；5, pressure prediction matched curve；6, safety protective valve；7, balance carries valve；
8, solenoid directional control valve；9, remote terminal；10, Trends Sheet figure；11, it loads；12, overload relief valve.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Aspect disclosed herein and the step of the method or algorithm described and/or movement can directly with hardware, with by
The software module or implemented with the combination of the two that processor executes.Software module can reside within RAM memory, flash
Device, ROM memory, eprom memory, eeprom memory, register, hard disk, can be in removable disk, CD-ROM or technique
In the storage media of known any other form.Exemplary storage medium can be coupled to processor, so that processor can be from depositing
Media are stored up to read information and information is written to storage media.In alternative solution, storage media can be integrated with processor.Separately
Outside, in certain aspects, processor and storage media can reside in ASIC.In addition, ASIC can reside in user terminal.?
In alternative solution, processor and storage media can be used as discrete component and reside in user terminal.In addition, in some respects
In, the step of method or algorithm and/or movement can be used as one of code and/or instruction or any combination thereof or set and stay
It stays on machine-readable medium and/or computer-readable media, machine-readable medium and/or computer-readable media may be incorporated into meter
In calculation machine program product.
As depicted in figs. 1 and 2, a kind of multiple spot single-acting jack synchro-lift system, including three 1, three, jack
The variable-frequency control pump 2 of respectively each 1 fuel feeding of jack, for the pump according to a pressure instruction curve controlled variable-frequency control pump 2
The master controller 3 of speed oil.Jack 1 uses ultra-thin hydraulic lifting jack, and ultra-thin hydraulic lifting jack is using single oil circuit
Hydraulic oil is supplied, to adapt to narrow jacking installation space.
Master controller 3 allows the pressure of three jack 1 by monitoring and the pump oil speed of adjustment variable-frequency control pump 2 in real time
Value is constantly drawn close to the pressure value of preset pressure instruction curve in the same time, to reach to multiple spot single-acting hydraulic jacking thousand
Jin heading tape carries the Engineering Control operation of synchro-lift system.
As shown in Figures 2 and 3, master controller 3 includes memory module 31, for adjusting frequency conversion tune according to pressure instruction curve
The processing module 32 of the pump oil speed of speed pump 2, display module 33, communication module 36, the pressure inspection for detecting 1 oil pressure of jack
Survey device 34 and for detecting the displacement detector 35 of the displacement of 1 top load 11 of jack.Variable-frequency control pump 2 includes
The frequency control of variable-frequency motor 22 and regulation 22 revolving speed of variable-frequency motor that superpressure oil pump 21, driving superpressure oil pump 21 work
Device 23.Variable-frequency governor 23 connects with signal with processing module 32.Processing module 32 is by control variable-frequency governor 23 to frequency conversion
The frequency of the power supply of motor 22 adjusts the speed variable-frequency motor 22.Pressure-detecting device 34 and displacement detector 35 can be distinguished
Using pressure sensor and displacement sensor.
It is primary right that pressure-detecting device 34 and displacement detector 35 at interval of a monitoring time unit respectively correspond acquisition
Answer the pressure value of the oil pressure of jack 1 and the displacement of load 11.
Processing module 32 in real time mutually binds the pressure value that pressure-detecting device 34 detects with corresponding detection time point
Afterwards, pressure unit data are generated and are stored in memory module 31；
Processing module 32 reads three pressure unit data nearest in chronological order in memory module 31, is inserted using newton
Value-based algorithm or Lagrange's interpolation algorithm, generate one pass through these three pressure unit data in pressure value and detection time point and
For the pressure prediction matched curve of smooth curve；
Processing module 32 relatively pressure prediction matched curve and pressure instruction curve in real time, real-time time point backward three
In times monitoring time unit, three forecast pressure values are corresponded in pressure prediction matched curve, when these three forecast pressure values with
When corresponding pressure value differs by more than preset range on pressure instruction curve in the same time, processing module 32 controls variable-frequency control pump 2
Pump oil speed, draw close the pressure value in pressure prediction matched curve to the pressure value of pressure instruction curve in the same time, in advance
Correct the pump oil speed of variable-frequency control pump 2 and the lifting speed of jack 1.
Pressure instruction curve in above system is the curve that multiple reference unit data points are linked to be.Each number of reference
Strong point is made of a time point and a pressure value.Pressure instruction curve presets and is stored in a storage unit, for frequency conversion
The regulation of the pump oil speed of governor impeller 2 makes reference.
Specifically, the jacking stage is loaded in jack 1, when these three forecast pressure values and pressure instruction curve in the same time
When upper corresponding pressure value differs by more than predetermined value, processing module 32 reduces the pump oil speed of variable-frequency control pump 2, to make pressure
Pressure value in prediction matched curve is drawn close to the pressure value of pressure instruction curve in the same time；When on pressure instruction curve in the same time
When corresponding pressure value and these three forecast pressure values differ by more than predetermined value, processing module 32 improves the pump of variable-frequency control pump 2
Speed oil, so that the pressure value in pressure prediction matched curve be made to draw close to the pressure value of pressure instruction curve in the same time.
Landing phases are loaded in jack 1, when these three forecast pressure values are corresponding on pressure instruction curve in the same time
When pressure value differs by more than predetermined value, processing module 32 improves the pump oil speed of variable-frequency control pump 2, so that pressure prediction be made to be fitted
Pressure value on curve is drawn close to the pressure value of pressure instruction curve in the same time；When pressure corresponding on pressure instruction curve in the same time
When force value and these three forecast pressure values differ by more than predetermined value, processing module 32 reduces the pump oil speed of variable-frequency control pump 2, from
And draw close the pressure value in pressure prediction matched curve to the pressure value of pressure instruction curve in the same time.
Safety protective valve 6 is installed at the oil inlet and outlet of jack 1.It is high when chance failure occurs for system or load 11
Pressure oil can be discharged by this safety protective valve 6, improve whole safety.2 master controller 3 of variable-frequency control pump
Balance is installed on the pipeline road of jack 1 and carries valve 7 and for switching the solenoid directional control valve 8 of oil circuit.Thousand
Jin top 1 supplies hydraulic oil using single oil circuit, to adapt to narrow jacking installation space.When jacking, controlled by master controller 3
Solenoid directional control valve 8 is tangential and variable-frequency control pump 2 is connected with the pipeline road of jack 1, and it is defeated to carry out single channel to jack 1
Oil makes it carry out jacking work.When jack 1, which carries out band, carries landing, it is tangential that solenoid directional control valve 8 is controlled by master controller 3
And oil return circuit is connected with the pipeline road of jack 1, the hydraulic oil in jack 1 by solenoid directional control valve 8 along return
Oil return line discharge makes it carry out band and carries landing work.And since master controller 3 controls multiple jack 1 simultaneously, thus in master
Realize that multiple spot single-acting jack band carries the Engineering Control of synchronization lifting under the control of controller 3.
In addition, carrying the load pressure of the oil cylinder of 7 balance jack 1 of valve by balance, make with the jack 1 for carrying decline
The unlikely decompression of oil cylinder glides, and immediately closes cavity of resorption to No leakage, guarantees that workpiece will not freely glide, jack 1 is made to have a power failure
State remains to reliably carry, and can guarantee and adjust the speed state all in oil inlet when jack 1 is gone up and down, improve the safety of system with
Reliability.The pressure maintaining chamber of balanced valve is also equipped with overload relief valve 12, is that oil cylinder is protected not overload, when in-oil cylinder pressure is super
When crossing set pressure, which can be automatically turned on, and lay down excessively high oil pressure, make each oil cylinder load equalization.
As shown in Figure 3 and Figure 4, display module 33 includes the touching display screen connecting with 32 signal of processing module.Handle mould
The displacement that displacement detector 35 detects and the pressure value that pressure-detecting device 34 detects are shown in touch-control in real time and shown by block 32
In display screen.Processing module 32 simultaneously in real time closes pressure prediction matched curve and pressure instruction curve in same Trends Sheet Figure 10
In and be shown on a touching display screen.Keep operator intuitive and more comprehensively monitor jack 1 lifting process and
Parameters variation.
Operator passes through the reference unit data point of the pressure instruction curve shown on touch-control touching display screen and drags, shape
At corresponding touch-control feedback command.Processing module 32 modifies pressure instruction curve in response to touch-control feedback command.It can be easily
Modification is shown in pressure instruction curve on touching display screen, and has real-time display in the displacement detector 35 on touching display screen
The reference of the displacement of detection, the pressure value that pressure-detecting device 34 detects and pressure prediction matched curve with compare, make whole
A modification process is more clear, is intuitive and convenient, handling good.
Processing module 32 is communicated with remote terminal 9 through public network by communication module 36 and is connect.Remote terminal 9 can be hand
Machine, tablet computer etc. can touch-control intelligent terminals with computing function.
Processing module 32 pushes to Trends Sheet Figure 10 at one remote terminal 9 by communication module 36 in real time.Pass through touch-control
Remote terminal 9 simultaneously drags the pressure instruction curve in the Trends Sheet Figure 10 shown on touch-control remote terminal 9, touch-control remote terminal 9
It generates a modification to instruct and be sent at processing module 32 through public network and communication module 36, processing module 32 is same according to modification instruction
The practical pressure instruction curve for being used to control 2 pump oil speed of variable-frequency control pump of step modification.Operator is by remote terminal 9 to trend
Table Figure 10 is monitored in real time, and is remotely modified to pressure instruction curve, departing from the limitation of distance, makes multiple spot single-acting
The monitoring of jack synchronization lifting process and adjustment are more convenient.
A kind of control method of multiple spot single-acting jack synchro-lift system, as shown in Figure 3 and Figure 5, including：
Step S1, pressure-detecting device 34 and displacement detector 35 respectively correspond acquisition at interval of a monitoring time unit
The pressure value of the oil pressure of primary corresponding jack 1 and the displacement of load 11；
Step S2, the pressure value that processing module 32 in real time detects pressure-detecting device 34 and corresponding detection time point
After mutually binding, generates pressure unit data and be stored in memory module 31；
Step S3, processing module 32 read three pressure unit data nearest in chronological order in memory module 31, benefit
With Newton Interpolation Algorithm or Lagrange's interpolation algorithm, the pressure value and detection in these three pressure unit data is generated
Time point and be smooth curve pressure prediction matched curve；
Step S4, the relatively pressure prediction matched curve and pressure instruction curve in real time of processing module 32, in real-time time point
In three times monitoring time unit backward, three forecast pressure values are corresponded in pressure prediction matched curve, when these three predictions
When pressure value differs by more than preset range with corresponding pressure value on pressure instruction curve in the same time, processing module 32 will to it is corresponding when
The time point at quarter, and will be thousand corresponding to the abnormal time point and the pressure prediction matched curve as an abnormal time point
The number on jin top 1 is stored in an exception record table of memory module 31 after mutually binding as an anomaly unit data；It is different generating
While constant element data, processing module 32 controls the pump oil speed of variable-frequency control pump 2, makes the pressure in pressure prediction matched curve
Force value is drawn close to the pressure value of pressure instruction curve in the same time.
That is master controller 3 allows the pressures of three jack 1 by monitoring and the pump oil speed of adjustment variable-frequency control pump 2 in real time
Force value is constantly drawn close to the pressure value of preset pressure instruction curve in the same time, is risen to reach synchronous to three jack 1
The control of drop operates.
The discovery in advance to 1 anomalous variation of jack is reached and has modified in advance, to reach the stability of raising system
With the purpose of safety.
In addition, since the time point of the pressure value exception over range of pressure prediction matched curve each time being recorded simultaneously
It is stored in the exception record table of memory module 31, it, can be right convenient for the anomaly analysis in operating process and after construction
Emergency case carries out precise positioning and problem analysis according to anomaly unit data, can be by touch-control touching display screen by processing module
32 read exception record table from memory module 31 and are shown on touching display screen.
As shown in figure 4, the method also includes the amending methods to pressure instruction curve：Operator is aobvious by touch-control touch-control
Show the reference unit data point of the pressure instruction curve of screen display and drag, forms corresponding touch-control feedback command.Handle mould
Block 32 modifies pressure instruction curve in response to touch-control feedback command.
It realizes when showing pressure prediction matched curve and pressure instruction curve by the way that Trends Sheet Figure 10 is synchronous, directly exists
Motoring pressure instruction curve is i.e. changeable in Trends Sheet Figure 10 is directly changed pressure instruction curve, and in pressure prediction matched curve
Control under, keep the operation of pressure instruction curve modification more intuitive, convenient.
As shown in figure 3, the method also includes the methods to pressure instruction curve remote supervisory and modification：Processing module 32
Trends Sheet Figure 10 is pushed in real time at a remote terminal 9, operator can carry out Trends Sheet Figure 10 by remote terminal 9 real-time
Monitoring, remote terminal 9 generate a modification instruction to the modification amount of the pressure instruction curve in the Trends Sheet Figure 10 received and send
To processing module 32, processing module 32 is used to control 2 pump oil speed of variable-frequency control pump according to modification command synchronization modification is practical
Pressure instruction curve.So as to remotely modify to pressure instruction curve, departing from the limitation of distance, make multiple spot single-acting
The monitoring of jack synchronization lifting process and adjustment are more convenient.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.In addition, with regard to term " includes " for the degree in specific embodiment or claims
For, this term wishes the side explained to be similar to term "comprising" when "comprising" is used in claim as transitional word
Formula and be inclusive.In addition, although the element of described aspect and/or embodiment may be description in the singular or main
, but it is limited to singular unless explicitly claimed, otherwise it is also covered by plural form.In addition, unless otherwise stated, otherwise any side
All or part of of face and/or embodiment can be sharp together with all or part of of any other aspect and/or embodiment
With.
Claims (10)
1. a kind of multiple spot single-acting jack synchro-lift system, including several jack (1) and identical quantity are respectively
The variable-frequency control pump (2) of each jack (1) fuel feeding, which is characterized in that further include the pump oil for controlling variable-frequency control pump (2)
The master controller (3) of speed, master controller (3) include memory module (31), for adjusting frequency conversion according to a pressure instruction curve
The processing module (32) of the pump oil speed of governor impeller (2), the pressure-detecting device (34) for detecting jack (1) oil pressure and
For detect jack (1) institute's top load (11) displacement displacement detector (35)；
Processing module (32) in real time mutually binds the pressure value that pressure-detecting device (34) detects with corresponding detection time point
Afterwards, pressure unit data are generated and are stored in memory module (31)；
Processing module (32) reads several pressure unit data in memory module (31), generates one and passes through the pressure unit number
Pressure value and detection time point in and the pressure prediction matched curve for smooth curve；
Processing module (32) relatively pressure prediction matched curve and pressure instruction curve in real time, in real-time time point presetting backward
In period, when the pressure value of pressure prediction matched curve and the pressure value of pressure instruction curve in the same time differ by more than predetermined model
When enclosing, processing module (32) controls the pump oil speed of variable-frequency control pump (2), makes pressure value in pressure prediction matched curve to same
The moment pressure value of pressure instruction curve is drawn close.
2. a kind of multiple spot single-acting jack synchro-lift system according to claim 1, which is characterized in that master controller
It (3) further include a display module (33), processing module (32) connects with signal with display module (33), and processing module (32) is real-time
By the displacement of displacement detector (35) detection, the pressure value of pressure-detecting device (34) detection, pressure prediction matched curve
And pressure instruction curve is shown on display module (33).
3. a kind of multiple spot single-acting jack synchro-lift system according to claim 2, which is characterized in that display module
It (33) include a touching display screen, processing module (32) is in real time by the displacement of displacement detector (35) detection, pressure detecting
Pressure value, pressure prediction matched curve and the pressure instruction curve of device (34) detection are shown on touching display screen, are handled
The touch-control feedback command of module (32) real-time reception touching display screen output is simultaneously bent according to touch-control feedback command modification pressure instruction
Line.
4. a kind of multiple spot single-acting jack synchro-lift system according to claim 1 and control method, feature exist
In being equipped with safety protective valve (6) at the oil inlet and outlet of jack (1).
5. a kind of multiple spot single-acting jack synchro-lift system according to claim 1 and control method, feature exist
In, be equipped on the pipeline road of jack (1) balance carry valve (7).
6. a kind of control method of multiple spot single-acting jack synchro-lift system as claimed in any one of claims 1 to 5, wherein,
It is characterised in that it includes：
Processing module (32) in real time mutually binds the pressure value that pressure-detecting device (34) detects with corresponding detection time point
Afterwards, pressure unit data are generated and are stored in memory module (31)；
Processing module (32) reads several pressure unit data in memory module (31), generates one and passes through the pressure unit number
Pressure value and detection time point in and the pressure prediction matched curve for smooth curve；
Processing module (32) relatively pressure prediction matched curve and pressure instruction curve in real time, in real-time time point presetting backward
In period, when the pressure value of pressure prediction matched curve and the pressure value of pressure instruction curve in the same time differ by more than predetermined model
When enclosing, processing module (32) controls the pump oil speed of variable-frequency control pump (2), makes pressure value in pressure prediction matched curve to same
The moment pressure value of pressure instruction curve is drawn close.
7. a kind of control method of multiple spot single-acting jack synchro-lift system according to claim 6, feature exist
In differing by more than preset range when the pressure value of pressure prediction matched curve and the pressure value of pressure instruction curve in the same time
When, the method also includes：
Processing module (32) is using the time point at corresponding moment as an abnormal time point, and by the abnormal time point and the pressure
The number of jack (1) corresponding to power prediction matched curve is used as an anomaly unit data to be stored in memory module after mutually binding
(31) in an exception record table.
8. a kind of control method of multiple spot single-acting jack synchro-lift system according to claim 6, feature exist
In processing module (32) in real time closes pressure prediction matched curve and pressure instruction curve in same Trends Sheet figure (10) simultaneously
It is shown on a display module (33).
9. a kind of control method of multiple spot single-acting jack synchro-lift system according to claim 8, feature exist
In towing instruction by the pressure instruction curve generation in dragging Trends Sheet figure (10), processing module (32) basis tows instruction
Real time modifying pressure instruction curve.
10. a kind of control method of multiple spot single-acting jack synchro-lift system according to claim 8, feature exist
In processing module (32) pushes to Trends Sheet figure (10) at a remote terminal (9) in real time, by remote terminal (9) to reception
To Trends Sheet figure (10) in pressure instruction curve generate one modification instruct and be sent at processing module (32), processing module
(32) according to the practical pressure instruction curve for being used to control variable-frequency control pump (2) pump oil speed of modification command synchronization modification.
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| CN108545671B (en) * | 2018-07-10 | 2019-06-04 | 武汉商学院 | Container AGV hydraulic synchronization jacking system |
| CN108726420A (en) * | 2018-07-12 | 2018-11-02 | 西安飞豹科技有限公司 | A kind of aircraft jack high-precise synchronization lift control system and control method |
| WO2021051805A1 (en) * | 2019-09-16 | 2021-03-25 | 广东博智林机器人有限公司 | Climbing frame jacking system and control method, building machine, and climbing frame control method and system |
| CN112456333B (en) * | 2020-11-05 | 2022-12-13 | 中建三局第二建设工程有限责任公司 | Heat absorber hoist and mount control system |
| CN112557003A (en) * | 2020-11-16 | 2021-03-26 | 浙江工业大学 | Automatic failure detection system and method for electric jack |
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