CN104089689A - Material metering device and method and engineering machine - Google Patents
Material metering device and method and engineering machine Download PDFInfo
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- CN104089689A CN104089689A CN201410335094.8A CN201410335094A CN104089689A CN 104089689 A CN104089689 A CN 104089689A CN 201410335094 A CN201410335094 A CN 201410335094A CN 104089689 A CN104089689 A CN 104089689A
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- metering
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- measuring chute
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Abstract
The invention discloses a material metering device which comprises a metering bin, a weight sensor, a controller and a metering discharge device driving unit. The weight sensor is used for detecting the weight of the metering bin, and the metering bin is provided with a metering discharge device and a metering feed port. The metering discharge device driving unit is used for starting and shutting the metering discharge device, when it is in a feed rate calculation state, the controller calculates the feed rate s according to acquired weight sensor signals; when it is in a metering state, the controller calculates the metering weight m of the metering bin according to the acquired weight sensor signals, judges whether the metering weight m reaches the metering target weight or not, and controls the metering discharge device driving unit. In addition, the invention further discloses a material metering method and an engineering machine. According to the material metering device and method and the engineering machine, one metering bin is used for achieving the functions of a storage bin and the functions of a metering bin at the same time, the mechanical structure is simplified, and the size of the material metering device is reduced.
Description
Technical field
The present invention relates to engineering machinery field, particularly the engineering machinery of a kind of material measuring device and method.
Background technology
In construction machinery industry, the metering that many places all will use material with mix.Particularly, in the industry such as cement concrete, bituminous concrete, must carry out accurate-metering to starting material, and then realize being uniformly mixed and produce qualified finished product material.
At present, the metering control analysis using from construction machinery industry, metering dosage device and control method thereof mainly contain two kinds of modes: continous way metering and batch (-type) metering.Wherein batch (-type) measures to be divided into and adds title method and subtract title method.
The primary structure form of continous way metering, for a belt is set, is passed through belt transport by material, and LOAD CELLS is set below belt, then by weight and material transferring speed product, the mode of time integral is carried out to material metering.The control variable of continous way metering is generally thing density current speed, i.e. transmission weight in the unit interval.Generally change and ensure thing density current speed by adjusting the transmission speed of material.
The primary structure form that adds title method is that weigher is set below material bin, and control system provides after material metering signal, and material bin measuring gate will be opened automatically, and material falls.In the time that material falls to weigher by material bin, weigher shows weight of material in real time.When weight of material approaches or reaches after a certain setting value or desired value, control system provides closes material bin measuring gate signal, and measuring gate is closed.Blanking between material bin measuring gate and weigher all falls into after weigher, can calculate the weight of actual material metering.
Another kind of metering method, for subtracting title method, contains two storehouses conventionally, and material metering storehouse is set below material storage silo.After metering starts, first material in material bin is directly discharged in measuring chute, the amount of being discharged into generally, more than the required weight of material of reality, is then closed material bin.After weigher numerical stability, record the initial weight of weigher; Open weigher measuring gate, material goals of investment container, simultaneity factor will be calculated the reduction of material in weigher automatically, i.e. the input amount of material.After the input amount of material is more than or equal to the desired value of setting, system is closed weigher measuring gate automatically, and in weigher, material reduction is variable, and metering completes.
Summary of the invention
In view of this, the present invention proposes a kind of material measuring device and method and engineering machinery, and when opening metering disposing materials device and measure solving, measuring chute can not continue the problem of charging.
On the one hand, the invention provides a kind of material measuring device, comprise measuring chute and weight sensor and controller, metering disposing materials device driver element, weight sensor, for detection of measuring chute weight, offers metering disposing materials device and metering feeding mouth on measuring chute; Metering disposing materials device driver element is for opening and closing metering disposing materials device, and in the time entering calculating charging rate state, controller, according to the weight sensor signal gathering, calculates charging rate s; In the time entering metering state, controller, according to the weight sensor signal gathering, calculates the measuring chute m that calculates the weight, and whether the judgement m that calculates the weight reach metering target weight, controls metering disposing materials device driver element.
Further, metering feeding mouth is positioned at measuring chute upper end, and metering disposing materials device is positioned at measuring chute bottom.
Further, comprise frame, measuring chute is arranged in frame, and weight sensor is between frame and measuring chute.
A kind of material metering method is also provided on the other hand, has entered work scanning mode, judged whether metering request; If during without metering request, enter the charging rate state that calculates; Otherwise, enter metering state;
If enter the charging rate state that calculates: according to setting sampling rate, gather measuring chute weight; It is charging rate s that the changing value of measuring chute weight is instantaneous mass density current amount with the ratio of sampling interval time; Calculate and finish to enter the end of scan stage, then reenter work scanning mode;
If enter metering state: metering starts to enter, open metering disposing materials device, gather start-up time measuring chute actual weight simultaneously, and start timing t, then measuring chute weight after Real-time Collection start-up time, calculates the measuring chute m that calculates the weight; Whether the judgement m that calculates the weight reaches metering target weight, if the m that calculates the weight while reaching metering target weight, turn-offs metering disposing materials device, metering state finishes, otherwise, do not reach metering target and again enter and calculate the measuring chute m that calculates the weight.
Further, the m computing formula that calculates the weight of measuring chute is as follows: m=m
o+ s × t-m
r+ m
c; Wherein m
cit is a mechanical correction deviate.
In addition, also provide a kind of engineering machinery, comprised above-mentioned material measuring device.
The invention provides a kind of material measuring device and method and engineering machinery, adopt a measuring chute to realize the function of storage silo and measuring chute simultaneously, simplified physical construction, reduced material measuring device volume; Metering can start at any time, without waiting for that in measuring chute, weight is greater than target weight; The metering feeding mouth of metering process measuring chute can continue charging, without closing down metering feeding mouth.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is material measuring device structural representation of the present invention;
Fig. 2 is the control device schematic diagram of Fig. 1;
Fig. 3 is thing amount metering method schematic diagram of the present invention;
Fig. 4 is that Fig. 3 enters metering view.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Below in conjunction with Fig. 1 and Fig. 2, the preferred embodiments of the present invention are described in further detail to the material measuring device of this preferred embodiment: as shown in Figure 1, material measuring device is only realized with a measuring chute 11, and is equipped with control device as shown in Figure 2.As shown in Figure 1, measuring chute 11 bottoms are provided with metering disposing materials device 13, and top is provided with metering feeding mouth 14.Material 12 enters measuring chute 11 from metering feeding mouth 14, and material 12 is discharged measuring chute 11 from metering disposing materials device 13, and metering disposing materials device 13 drives opening and closing by metering disposing materials device driver element 4; Thereby control the discharge rate of measuring chute 11.Weight sensor 10 is arranged between measuring chute 11 and frame 1, and keeps rigidity and connect without interfering; Weight sensor is by 3 by the weight signal collecting unit collection signal in controller 2, and signal processing unit in controller 2 is processed.
Weight sensor 10 is connected with controller 2 by cable 5, and metering disposing materials device driver element 4 is connected with controller 2 by cable 5.In the time entering calculating charging rate state, controller 2, according to weight sensor 10 signals that gather, calculates charging rate s; In the time entering metering state, controller 2, according to weight sensor 10 signals that gather, calculates the measuring chute m that calculates the weight, and whether the judgement m that calculates the weight reaches metering target weight m
t, control metering disposing materials device driver element 4.
Concrete material metering method is shown in shown in Fig. 3 and Fig. 4, enters work scanning mode s30, has judged whether metering request s31; If during without metering request, enter and calculate charging rate state s34; Otherwise, enter metering state s32;
Calculate charging rate state s34 if entered; Material 12 enters measuring chute 11 from metering feeding mouth 14, and measuring chute 11 weight increase.Gather metering rate according to setting, gather measuring chute weight; It is charging rate s that the changing value recruitment of measuring chute weight is instantaneous mass density current amount with the ratio of sampling interval time; Calculate and finish to enter end of scan stage s33, then reenter work scanning mode s30;
If enter metering state s32; Metering starts to enter s40, first opens metering disposing materials device s41, gathers start-up time measuring chute actual weight m simultaneously
o, material 12 is discharged measuring chute 11 from metering disposing materials device 13, starts timing t, measuring chute weight m after Real-time Collection start-up time
r, calculate the measuring chute ms42 that calculates the weight; The m computing formula that calculates the weight is as follows:
m＝m
o+s×t-m
r+m
c；
Wherein m
cbe a mechanical correction deviate, comprise measuring gate closing process and leak material etc.
Get and calculate the weight after m, judge whether the m that calculates the weight reaches metering target weight m
ts43, when the m that calculates the weight approaches metering target weight m
ttime, for example can take m>=m
tmode, turn-off metering disposing materials device s44, metering state finishes s45.If do not arrive metering target weight m
treenter and calculate the measuring chute m that calculates the weight, along with the passing of timing t, then continue to enter the judgement ms44 that calculates the weight, until reach metering target weight m
t.
The present invention also provides a kind of engineering machinery that comprises this material measuring device.Material measuring device can for example, for the gage work of powder or siccative or fluid: concrete, cement, building stones etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a material measuring device, it is characterized in that, comprise measuring chute (11) and weight sensor (10) and controller (2), metering disposing materials device driver element (4), weight sensor (10), for detection of measuring chute (11) weight, offers metering disposing materials device (13) and metering feeding mouth (14) on measuring chute (11); Metering disposing materials device driver element (4) is for opening and closing metering disposing materials devices (13), in the time entering calculating charging rate state, controller (2), according to weight sensor (10) signal gathering, calculates charging rate s; In the time entering metering state, controller (2) is according to weight sensor (10) signal gathering, calculate measuring chute (11) m that calculates the weight, and judge that whether the m that calculates the weight reaches metering target weight, controls metering disposing materials device driver element (4).
2. material measuring device according to claim 1, is characterized in that, metering feeding mouth (14) is positioned at measuring chute (11) upper end, and metering disposing materials device (13) is positioned at measuring chute (11) bottom.
3. material measuring device according to claim 1 and 2, it is characterized in that, comprise frame (1), it is upper that measuring chute (11) is arranged on frame (1), and weight sensor (10) is positioned between frame (1) and measuring chute (11).
4. a material metering method, is characterized in that, enters work scanning mode (s30), has judged whether metering request (s31); If during without metering request, enter the charging rate state (s34) that calculates; Otherwise, enter metering state (s32);
If enter the charging rate state (s34) that calculates: according to setting sampling rate, gather measuring chute (11) weight; It is charging rate s that the changing value of measuring chute (11) weight is instantaneous mass density current amount with the ratio of sampling interval time; Calculate and finish to enter the end of scan stage (s33), then reenter work scanning mode (s30);
If enter metering state (s32): metering starts to enter (s40), open metering disposing materials device (s41), gather start-up time measuring chute (11) actual weight m simultaneously
o, and start timing t, then measuring chute (11) weight m after Real-time Collection start-up time
r, calculate measuring chute (11) m (s42) that calculates the weight; Judge whether the m that calculates the weight reaches metering target weight m
t(s43), if the m that calculates the weight reaches metering target weight m
ttime, turn-offing metering disposing materials device (s44), metering state finishes (s45), otherwise, do not reach metering target and again enter and calculate measuring chute (11) m (s42) that calculates the weight.
5. material metering method according to claim 4, is characterized in that, the m computing formula that calculates the weight of measuring chute (11) is as follows: m=m
o+ s × t-m
r+ m
c; Wherein m
cit is a mechanical correction deviate.
6. an engineering machinery, is characterized in that, comprises the material measuring device described in claims 1 to 3 any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335094.8A CN104089689B (en) | 2014-07-15 | 2014-07-15 | A kind of material measuring device and method and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410335094.8A CN104089689B (en) | 2014-07-15 | 2014-07-15 | A kind of material measuring device and method and engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN104089689A true CN104089689A (en) | 2014-10-08 |
| CN104089689B CN104089689B (en) | 2017-06-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679913A (en) * | 1979-12-04 | 1981-06-30 | Kubota Ltd | Metering method |
| CN86105103A (en) * | 1985-08-26 | 1987-04-08 | 通用信号公司 | Apparatus and method for feeding particulate material such as coal and other bulk materials |
| CN102175294A (en) * | 2011-01-20 | 2011-09-07 | 三一重工股份有限公司 | Material metering control method and material metering control device |
| CN103129942A (en) * | 2011-11-29 | 2013-06-05 | 北京橡胶工业研究设计院 | Granule or powder feeding and weighing controlling system |
| CN203705029U (en) * | 2013-12-26 | 2014-07-09 | 传力电子衡器(南京)有限公司 | Uniform speed balanced material feeding system based on high precision dynamic weighing |
-
2014
- 2014-07-15 CN CN201410335094.8A patent/CN104089689B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679913A (en) * | 1979-12-04 | 1981-06-30 | Kubota Ltd | Metering method |
| CN86105103A (en) * | 1985-08-26 | 1987-04-08 | 通用信号公司 | Apparatus and method for feeding particulate material such as coal and other bulk materials |
| CN102175294A (en) * | 2011-01-20 | 2011-09-07 | 三一重工股份有限公司 | Material metering control method and material metering control device |
| CN103129942A (en) * | 2011-11-29 | 2013-06-05 | 北京橡胶工业研究设计院 | Granule or powder feeding and weighing controlling system |
| CN203705029U (en) * | 2013-12-26 | 2014-07-09 | 传力电子衡器(南京)有限公司 | Uniform speed balanced material feeding system based on high precision dynamic weighing |
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|---|---|
| CN104089689B (en) | 2017-06-13 |
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Effective date of registration: 20190808 Address after: 415000 Chongde Residential Committee Group II, Deshan Town, Changde Economic and Technological Development Zone, Hunan Province Patentee after: Changde 31 Machinery Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: Hunan Sany Road Machinery Co., Ltd. |
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