CN1987101A - Real time discharging volume measuring method and device for concrete pump - Google Patents
Real time discharging volume measuring method and device for concrete pump Download PDFInfo
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- CN1987101A CN1987101A CN 200610155171 CN200610155171A CN1987101A CN 1987101 A CN1987101 A CN 1987101A CN 200610155171 CN200610155171 CN 200610155171 CN 200610155171 A CN200610155171 A CN 200610155171A CN 1987101 A CN1987101 A CN 1987101A
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- 239000004567 concrete Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000007599 discharging Methods 0.000 title claims description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 75
- 238000005086 pumping Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011431 lime mortar Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
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Abstract
A method and system for measuring the real-time displacement volume of a piston-type concrete pump is disclosed. Said method includes such steps as measuring the piston displace of concrete cylinder and the pressure of concrete cylinder, analyzing the measured piston displace signal as reference and the pressure signal, calculating the real-time pumping coefficient, finding out the modification to calculated result according to the information contained in the pressure signal of hydraulic system, and metering the real-time displacement of concrete pump.
Description
Technical field
The present invention relates to the method and the device of flow measurement, especially relate to a kind of concrete pump real time discharging volume measuring method and device.
Background technique
Concrete stirring and pumping are normally carried out in the two places of apart from each other, and stirring, transportation and construction party be Chang Weisan different unit also.A side who is in a disadvantageous position because of information asymmetry in the architecture machinery rental industry---construction user side---proposes to be badly in need of the deficiency that discharge capacity metering system (mainly being the discharge capacity metering system with pump truck) remedies this respect.In the demand that also exists aspect the evaluation of pump (car) monitoring running state, construction management and construction quality, pump truck quality the discharge capacity metering system.A typical example is: when building ground with cement slurry (or lime mortar) or driving piles with deep mixing method, owing to do not measure recording device more reliably, priming charge mud quantity is difficult to guarantee, technology and artificial origin cause " jerry-built project " often, bring about great losses to people's lives and properties, the use of some whole set equipments, construction process is restricted.Concrete discharge capacity measurment technique has become one in construction implement engineering practical application technical problem that needs to be resolved hurrily, with the exploitation of the discharge capacity measuring apparatus of car and control system, statistic management system, be considered as the significant function of pump truck of new generation by domestic each main building machinery manufacturing enterprise.
The direct research of relevant concrete pump displacement measurment technique both at home and abroad rarely has report, just using or studying among method of measurement and technological scheme comprise:
(1) utilize displacement transducer, switch sensor to carry out the method for discharge capacity metering.This method adopts switch sensor that the pump stroke number of times is counted, and carries out the metering of piston concrete pump (slurry pump) discharge capacity according to the pumping efficiency of setting according to experience.Owing to can not get rid of the influence that " idle stroke " and outlet pressure change on method of measurement, there is big error in dipping in this method.
(2) utilize the hydraulic system signal to carry out the method for discharge capacity metering.This method utilizes the reciprocal corresponding relation of the pressure signal of hydraulic system and piston cylinder to carry out the metering of concrete pump delivery.Though this method has simple and reliable characteristics, still rest in essence on the reciprocal time of measuring hydraulic drive piston, and can not distinguish back pressure signal, the precision under complex working condition is very limited.
(3) based on surveying the method for measurement that sucks volumetric efficiency.Suck volumetric efficiency by the field measurement concrete cylinder and calculate the average volumetric efficiency that sucks, and measure the number of stroke of piston per minute when range of concrete cylinder, according to the average volumetric efficiency that sucks concrete pump displacement is measured then.This method principle is simple, can reduce the error of the actual average discharge capacity that causes because of Coefficient of discharge is inaccurate.But require to have special measuring channel, also increased operator's the amount of labour simultaneously.Not only expend time in, frequent mensuration is also unrealistic.
Summary of the invention
The object of the present invention is to provide a kind of concrete pump real time discharging volume measuring method and device.This device can theory of computation discharge capacity, actual displacement, pumping efficiency coefficient and average pumping efficiency coefficient in real time.
The present invention realizes by following technological scheme:
One. the concrete pump real time discharging volume measuring method
By measuring concrete pump piston displacement and pumps hydraulic system pressure, with concrete cylinder piston displacement signal is benchmark, the information of the asynchronism(-nization) that occurs according to concrete cylinder piston displacement signal but characteristic point identical with the pumps hydraulic system pressure signal period, concrete cylinder piston displacement signal and pumps hydraulic system pressure signal are combined, concrete cylinder piston displacement signal and pumps hydraulic system pressure signal are analyzed, calculate real-time pumping efficiency coefficient, the concrete pump real time discharge volume is measured; The concrete steps of its method are as follows:
1) fixed support is installed in the water tank place, two dragline type linear displacement transducers are installed on the fixed support, the Outlet of two displacement transducers is connected on concrete pump respectively separately on the adpting flange of piston rod and concrete cylinder piston, measures two concrete cylinder piston displacements respectively;
2) cover that is threaded is installed on the pumps hydraulic system oil-feed oil circuit, pressure transducer is installed in to be threaded puts, measure the pumps hydraulic system pressure;
3) two switch sensors are installed on the fixed support, measure the elapsed time and the concluding time of each pump stroke;
4) switch sensor signal, displacement transducer signal and pressure sensor signal are gathered, determine the elapsed time and the concluding time of pump stroke separately according to the switch sensor signal, with the piston displacement signal is benchmark, piston displacement signal and pumps hydraulic system pressure signal are combined, utilize the information of the asynchronism(-nization) that piston displacement signal but characteristic point identical with the pumps hydraulic system pressure signal period occur, calculate real-time pumping efficiency coefficient, realize the measurement of concrete pump real time discharge volume:
In the formula:
Actual displacement (the m that the Q-concrete pump is total
3); Q
iActual displacement (the m an of-Di i pump stroke
3); D-concrete cylinder diameter (m); S-concrete cylinder theoretical length (m); η
iThe real-time pumping efficiency coefficient an of-Di i pump stroke.
Two. concrete pump real time discharge volume measuring device
Comprise two dragline type linear displacement transducers, two switch sensors, hydraulic system pressure sensor, input device, output unit and microprocessor; Two dragline type linear displacement transducers are contained on the fixed support of piston concrete pump water tank, and the Outlet of two displacement transducers is connected on the adpting flange of concrete pump piston rod and concrete cylinder piston through static pulley respectively; Hydraulic system pressure sensor is installed on the pumps hydraulic system oil-feed oil circuit through the cover that is threaded; Be used for determining that the elapsed time of each pump stroke and two switch sensors of concluding time are installed in fixed support; 5 sensor tap microprocessors, microprocessor are also respectively with the input device that is used to import discharge capacity metering desired parameters be used for result of calculation is shown or the output unit of printing is connected.
Described L type pad is installed on piston rod and the concrete cylinder piston flange connecting; Described another sheet L type pad is installed in another root piston rod and another concrete cylinder piston flange connecting; The Outlet of two displacement transducers is separately fixed at separately on the L type pad, respectively two displacement transducer stay cords is commutated by two static pulley, guarantees two displacement transducer stay cords and piston rod line parallel separately.
The beneficial effect that the present invention has is:
Change at concrete Pump Output Pressure, hydraulic system pressure and to cause piston different problem of movement velocity when different strokes, the different jig frequency, the information of further utilizing pumps hydraulic system pressure signal to contain proposes the reduction value of result of calculation, substantially on the method for measurement, get rid of the influence that mixture rheology state, component ratio difference and pump discharge pressure working conditions change, hydraulic driving power change, improve the accuracy of measuring.
Description of drawings
Fig. 1 is apparatus of the present invention general structure block diagram;
Fig. 2 is apparatus of the present invention mounting structure schematic representation;
Fig. 3 is one of displacement transducer scheme of installation;
Fig. 4 is the pressure transducer scheme of installation;
Fig. 5 is pumps hydraulic system pressure signal and concrete cylinder piston displacement signal relation figure;
Fig. 6 is apparatus of the present invention workflow diagrams.
Among the figure: 1, the dragline type linear displacement transducer, 2, the dragline type linear displacement transducer, 3, switch sensor, 4, switch sensor, 5, hydraulic system pressure sensor, 6, input device, 7, output unit, 8, microprocessor, 9, static pulley, 10, static pulley, 11, master cylinder, 12, master cylinder, 13, concrete cylinder, 14, concrete cylinder, 15, main oil cylinder piston, 16, main oil cylinder piston, 17, piston rod, 18, piston rod, 19, L type pad, 20, L type pad, 21, flange, 22, flange, 23, the concrete cylinder piston, 24, the concrete cylinder piston, 25, the cover that is threaded, 26, fixed support.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the present invention includes 1,2, two switch sensors 3,4 of two dragline type linear displacement transducers, hydraulic system pressure sensor 5, input device 6, output unit 7 and microprocessor 8.Two dragline type linear displacement transducers 1,2 are contained on the fixed support 26 of piston concrete pump water tank, and the Outlet of two displacement transducers 1,2 is connected on the adpting flange 21,22 of concrete pump piston rod 17,18 and concrete cylinder piston 23,24 through static pulley 9,10 respectively; Hydraulic system pressure sensor 5 is installed on the pumps hydraulic system oil-feed oil circuit through the cover 25 that is threaded; Be used for determining that the elapsed time of each pump stroke and two switch sensors 3,4 of concluding time are installed in fixed support 26; 5 sensor tap microprocessors 8, microprocessor 8 are also respectively with the input device 6 that is used to import discharge capacity metering desired parameters be used for result of calculation is shown or the output unit 7 of printing is connected.11 and 12 are respectively two master cylinders of piston concrete pump, and 15,16 are respectively the main oil cylinder piston of piston concrete pump, and 13,14 are respectively concrete cylinder.
As shown in Figure 3, described L type pad 19 is installed on piston rod 17 and concrete cylinder piston 23 flange connecting 21; Described another sheet L type pad 20 is installed on another root piston rod 18 and another concrete cylinder piston 24 flange connecting 22; The Outlet of two displacement transducers 1,2 is separately fixed at separately on the L type pad 19,20, respectively two displacement transducers, 1,2 stay cords are commutated by two static pulley 9,10, guarantee two displacement transducer 1,2 stay cords and piston rod 17,18 parallel axes separately.
As shown in Figure 2, dragline type linear displacement transducer 1 and 2 is installed in respectively on the fixed support 26, and wherein displacement transducer 1 is used to measure the displacement of concrete cylinder piston 23, and displacement transducer 2 is used to measure the displacement of concrete cylinder piston 24.Switch sensor 3 and 4 is installed in respectively on the fixed support, is used for determining the elapsed time and the concluding time of each pump stroke.Hydraulic system pressure sensor 5 is installed on the pumps hydraulic system oil-feed oil circuit (as shown in Figure 4) through the cover 25 that is threaded, and is used to measure hydraulic system pressure.Input device 6 is used to import discharge capacity metering desired parameters such as the slump, concrete cylinder diameter, length etc.Output unit 7 is used for result of calculation being shown or printing.Microprocessor 8 is used for analytic liquid pressing system pressure signal, piston displacement signal and interrupt signal, and provides system required clock, calculates the concrete pump real time discharge volume and the result is sent to output unit.
Working procedure of the present invention is as follows:
In conjunction with Fig. 2 and Fig. 6, after i pump stroke starts, when concrete cylinder piston 23 or 24 leaves switch sensor 3 or 4, switch sensor 3 or 4 sends an interrupt signal (from the high level to the low level) and gives microprocessor 8, and microprocessor 8 is determined the time that i pump stroke begins according to the clock circuit that its inside carries; When concrete cylinder piston 23 or 24 arrives concrete cylinder 17 or 18 ends, correspondingly, concrete cylinder piston 24 or 23 arrives switch sensor 4 or 3, switch sensor 4 or 3 sends an interrupt signal (from the low level to the high level) and gives microprocessor 8, and the clock circuit that microprocessor 8 carries according to its inside is determined the time that i pump stroke finishes.After microprocessor 8 is received the interrupt signal that switch sensor 3 and 4 sends, illustrate that i pump stroke finish, extract displacement transducer 1 in i the pump stroke or 2 and the signal gathered of hydraulic system pressure sensor 5, and the concrete cylinder piston displacement signal and the hydraulic system pressure signal of i pump stroke are analyzed.
The relation of pumps hydraulic system pressure signal and concrete cylinder piston displacement signal as shown in Figure 5 in i pump stroke.Wherein (a) is pumps hydraulic system pressure-time diagram, (b) be concrete cylinder piston displacement-time diagram, (c) be switch sensor interrupt signal-time diagram. because concrete cylinder 13 or 14 is when sucking the concrete mix, can not be full of whole concrete cylinder fully, the process of a compacted concrete is arranged when pumping.In the process of compacted concrete, concrete cylinder 13 or 14 internal pressures rise gradually, correspondingly, promote the master cylinder 11 of concrete cylinder piston 23 or 24 or 12 pressure and also rise gradually.When concrete during by complete compacting, the pressure in the concrete cylinder 13 or 14 remain stable, and correspondingly, master cylinder 11 or 12 pressure also keep a stationary value.Microprocessor 8 when pumps hydraulic system pressure signal remains stable, determines that the pairing time is t this moment by concrete cylinder piston displacement signal in i the pump stroke and pumps hydraulic system pressure signal are analyzed
1iAnd in i pump stroke, each constantly all has a shift value corresponding with it.When i pump stroke begins, time t
0iCorresponding displacement is S
0iWhen i pump stroke finishes, time t
2iCorresponding displacement is S
2iIn i the pump stroke, when pressure signal remains stable, time t
1iCorresponding displacement is S
1iBy preceding surface analysis as can be known, S
2i-S
1iBe effective displacement of i pump stroke, and S
2i-S
0iBe the total displacement of i pump stroke, then the real-time pumping efficiency coefficient of i pump stroke is:
The Theoretical flowing capacity of known i pump stroke is:
Then can obtain the actual displacement of i pump stroke:
The actual displacement of each pump stroke is added up, then can obtain total actual displacement:
The pumping efficiency coefficient of each pump stroke is added up,, can obtain average pumping efficiency coefficient divided by total pump stroke number of times.
Displacement transducer, switch sensor, hydraulic system pressure sensor and microprocessor that the present invention adopts all can be bought on the market.
Claims (3)
1. concrete pump real time discharging volume measuring method, it is characterized in that: by measuring concrete cylinder piston displacement and pumps hydraulic system pressure, with concrete cylinder piston displacement signal is benchmark, the information of the asynchronism(-nization) that occurs according to concrete cylinder piston displacement signal but characteristic point identical with the pumps hydraulic system pressure signal period, concrete cylinder piston displacement signal and pumps hydraulic system pressure signal are combined, concrete cylinder piston displacement signal and pumps hydraulic system pressure signal are analyzed, calculate real-time pumping efficiency coefficient, the concrete pump real time discharge volume is measured; The concrete steps of its method are as follows:
1) fixed support is installed in the water tank place, two dragline type linear displacement transducers are installed on the fixed support, the Outlet of two displacement transducers is connected on concrete pump respectively separately on the adpting flange of piston rod and concrete cylinder piston, measures two concrete cylinder piston displacements respectively;
2) cover that is threaded is installed on the pumps hydraulic system oil-feed oil circuit, pressure transducer is installed in to be threaded puts, measure the pumps hydraulic system pressure;
3) two switch sensors are installed on the fixed support, measure the elapsed time and the concluding time of each pump stroke;
4) switch sensor signal, displacement transducer signal and pressure sensor signal are gathered, determine the elapsed time and the concluding time of pump stroke separately according to the switch sensor signal, with the piston displacement signal is benchmark, piston displacement signal and pumps hydraulic system pressure signal are combined, utilize the information of the asynchronism(-nization) that piston displacement signal but characteristic point identical with the pumps hydraulic system pressure signal period occur, calculate real-time pumping efficiency coefficient, realize the measurement of concrete pump real time discharge volume:
In the formula:
Actual displacement (the m that the Q-concrete pump is total
3); Q
iActual displacement (the m an of-Di i pump stroke
3); D-concrete cylinder diameter (m); S-concrete cylinder theoretical length (m); η
iThe real-time pumping efficiency coefficient an of-Di i pump stroke.
2. concrete pump real time discharge volume measuring device, it is characterized in that: comprise two dragline type linear displacement transducers (1,2), two switch sensors (3,4), hydraulic system pressure sensor (5), input device (6), output unit (7) and microprocessor (8); Two dragline type linear displacement transducers (1,2) are contained on the fixed support (26) of piston concrete pump water tank, and the Outlet of two displacement transducers (1,2) is connected on the adpting flange (21,22) of concrete pump piston rod (17,18) and concrete cylinder piston (23,24) through static pulley (9,10) respectively; Hydraulic system pressure sensor (5) is installed on the pumps hydraulic system oil-feed oil circuit through the cover (25) that is threaded; Be used for determining that the elapsed time of each pump stroke and two switch sensors (3,4) of concluding time are installed in fixed support (26); Five sensor tap microprocessors (8), microprocessor (8) are also respectively with the input device (6) that is used to import discharge capacity metering desired parameters be used for result of calculation is shown or the output unit (7) of printing is connected.
3. concrete pump real time discharge volume measuring device according to claim 1 is characterized in that: described L type pad (19) is installed on piston rod (17) and concrete cylinder piston (23) flange connecting (21); Described another sheet L type pad (20) is installed on another root piston rod (18) and another concrete cylinder piston (24) flange connecting (22); The Outlet of two displacement transducers (1,2) is separately fixed at separately on the L type pad (19,20), respectively two displacement transducers (1,2) stay cord is commutated by two static pulley (9,10), guarantee two displacement transducers (1,2) stay cord and piston rod (17,18) parallel axes separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101551717A CN100402852C (en) | 2006-12-12 | 2006-12-12 | Real time discharging volume measuring method and device for concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101551717A CN100402852C (en) | 2006-12-12 | 2006-12-12 | Real time discharging volume measuring method and device for concrete pump |
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| Publication Number | Publication Date |
|---|---|
| CN1987101A true CN1987101A (en) | 2007-06-27 |
| CN100402852C CN100402852C (en) | 2008-07-16 |
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| CNB2006101551717A Expired - Fee Related CN100402852C (en) | 2006-12-12 | 2006-12-12 | Real time discharging volume measuring method and device for concrete pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012071955A1 (en) * | 2010-12-02 | 2012-06-07 | 中联重科股份有限公司 | Device for monitoring pumping oil cylinder stroke and method thereof, and method for optimizing arrangement of buffering holes |
| CN108196487A (en) * | 2018-02-23 | 2018-06-22 | 长安大学 | A kind of towed concrete pump vehicle concrete flow quantity monitoring system and monitoring method |
| CN109339820A (en) * | 2018-09-19 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of device and method for the amount control of concrete spraying side |
| CN111622914A (en) * | 2020-05-29 | 2020-09-04 | 三一汽车制造有限公司 | Concrete pumping system, concrete pumping equipment and control method |
| CN111946606A (en) * | 2020-06-28 | 2020-11-17 | 广州海达安控智能科技有限公司 | CFG pile concrete pump discharge capacity calculation method, electronic equipment and storage medium |
| CN112832997A (en) * | 2020-08-12 | 2021-05-25 | 中联重科股份有限公司 | Method and device for determining pumping volume of pumping equipment and pumping equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138553Y (en) * | 1992-07-15 | 1993-07-21 | 武汉市市政工程总公司科研所 | Automatic adding device for concrete additive |
| CN1156704A (en) * | 1996-02-07 | 1997-08-13 | 肖光荣 | Concrete batching metering method and equipment |
| CN2265442Y (en) * | 1996-05-03 | 1997-10-22 | 江苏省机电研究所 | Electronic controller for concrete pump |
| CN2611631Y (en) * | 2003-03-17 | 2004-04-14 | 杨志明 | Fault warning controller of concrete pump |
| DE102004015415A1 (en) * | 2004-03-26 | 2005-10-13 | Putzmeister Ag | Device and method for controlling a two-cylinder slurry pump |
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2006
- 2006-12-12 CN CNB2006101551717A patent/CN100402852C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012071955A1 (en) * | 2010-12-02 | 2012-06-07 | 中联重科股份有限公司 | Device for monitoring pumping oil cylinder stroke and method thereof, and method for optimizing arrangement of buffering holes |
| CN108196487A (en) * | 2018-02-23 | 2018-06-22 | 长安大学 | A kind of towed concrete pump vehicle concrete flow quantity monitoring system and monitoring method |
| CN109339820A (en) * | 2018-09-19 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of device and method for the amount control of concrete spraying side |
| CN111622914A (en) * | 2020-05-29 | 2020-09-04 | 三一汽车制造有限公司 | Concrete pumping system, concrete pumping equipment and control method |
| CN111622914B (en) * | 2020-05-29 | 2022-03-01 | 三一汽车制造有限公司 | Concrete pumping system, concrete pumping equipment and control method |
| CN111946606A (en) * | 2020-06-28 | 2020-11-17 | 广州海达安控智能科技有限公司 | CFG pile concrete pump discharge capacity calculation method, electronic equipment and storage medium |
| CN111946606B (en) * | 2020-06-28 | 2023-04-07 | 广州市中海达测绘仪器有限公司 | CFG pile concrete pump discharge capacity calculation method, electronic equipment and storage medium |
| CN112832997A (en) * | 2020-08-12 | 2021-05-25 | 中联重科股份有限公司 | Method and device for determining pumping volume of pumping equipment and pumping equipment |
| CN112832997B (en) * | 2020-08-12 | 2022-05-17 | 中联重科股份有限公司 | Method and device for determining pumping volume of pumping equipment and pumping equipment |
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|---|---|
| CN100402852C (en) | 2008-07-16 |
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