CN104089689B - A kind of material measuring device and method and engineering machinery - Google Patents
A kind of material measuring device and method and engineering machinery Download PDFInfo
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- CN104089689B CN104089689B CN201410335094.8A CN201410335094A CN104089689B CN 104089689 B CN104089689 B CN 104089689B CN 201410335094 A CN201410335094 A CN 201410335094A CN 104089689 B CN104089689 B CN 104089689B
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Abstract
The invention discloses a kind of material measuring device, including measuring chute and weight sensor and controller, metering row's device for discharging driver element, weight sensor is used to detect measuring chute weight, and metering row's device for discharging and metering feeding mouthful are offered on measuring chute；For opening and closing metering row's device for discharging, when calculating charging rate state is entered, controller calculates charging rate s to metering row's device for discharging driver element according to the weight sensor signal of collection；When metering state is entered, controller calculates measuring chute and calculates the weight m according to the weight sensor signal of collection, and whether the m that judges to calculate the weight reaches metering target weight, control metering row's device for discharging driver element.There is further disclosed herein a kind of materia metering method and engineering machinery.The present invention realizes the function of storage silo and measuring chute using a measuring chute simultaneously, simplifies mechanical structure, reduces material measuring device volume.
Description
Technical field
The present invention relates to engineering machinery field, the engineering machinery of more particularly to a kind of material measuring device and method.
Background technology
In construction machinery industry, many places will use to be arrived the metering of material and mixes.Particularly cement concrete,
In the industries such as bituminous concrete, it is necessary to which raw material are accurately measured, and then realize the stirring qualified finished product material of mixture manufacturing.
At present, the metering control analysis for being used from construction machinery industry, metering dosage device and its control method
Mainly there is two ways：Continous way is measured and batch (-type) metering.Wherein batch (-type) metering is divided into and adds title method and subtract title method.
Material is passed through belt transport by the primary structure form of continous way metering to set a belt, and under belt
Side sets weighing sensor, then carries out material metering by way of weight and material transferring speed product are to time integral.
The control variables of continous way metering is usually thing density current speed, i.e. transmission weight in the unit interval.Generally by adjusting material
Transmission speed come change and ensure thing density current speed.
Plus the primary structure form of title method is that weigher is provided below in material bin, control system provides material metering signal
Afterwards, material bin measuring gate will automatically turn on, and material falls.When material falls to weigher by material bin, weigher shows in real time
Show weight of material.After weight of material is close to or up a certain setting value or desired value, control system provides closing material bin meter
Amount gate signal, measuring gate is closed.After the blanking between material bin measuring gate and weigher entirely falls in weigher, can calculate
The weight of actual material metering.
Another metering method usually contains two storehouses to subtract title method, i.e., set material metering below material storage silo
Storehouse.After metering starts, first material in material bin is directly discharged into measuring chute, the amount of being discharged into is typically greater than actually required material
Weight, is then shut off material bin.After weigher numerical stability, the initial weight of weigher is recorded；Open weigher metering
Door, material goals of investment container, simultaneity factor will automatically calculate the decrement of material in weigher, the i.e. input amount of material.When
After desired value of the input amount of material more than or equal to setting, system is automatically switched off weigher measuring gate, and material subtracts in weigher
Variable is on a small quantity, and metering is completed.
The content of the invention
In view of this, the present invention proposes a kind of material measuring device and method and engineering machinery, to solve to open metering row
When device for discharging is measured, measuring chute can not continue the problem of charging.
On the one hand, the invention provides a kind of material measuring device, including measuring chute and weight sensor and controller, meter
Amount row's device for discharging driver element, weight sensor is used to detect measuring chute weight, metering disposing material is offered on measuring chute and is filled
Put and metering feeding mouthful；Metering row's device for discharging driver element is used to open and close metering row's device for discharging, is calculated when entering
During charging rate state, controller calculates charging rate s according to the weight sensor signal of collection；When metering state is entered,
Controller calculates measuring chute and calculates the weight m according to the weight sensor signal of collection, and whether the m that judges to calculate the weight reaches meter
Amount target weight, control metering row's device for discharging driver element.
Further, metering feeding mouthful is located at measuring chute upper end, and metering row's device for discharging is located at measuring chute bottom.
Further, including frame, measuring chute is arranged in frame, and weight sensor is located between frame and measuring chute.
On the other hand a kind of materia metering method is additionally provided, into work scanning mode, determines whether metering request；
If during without metering request, into calculating charging rate state；Otherwise, into metering state；
If into calculating charging rate state：According to setting sampling rate, measuring chute weight is gathered；Measuring chute weight
It is charging rate s that the ratio between changing value and sampling interval duration are instantaneous mass density current amount；Calculate and terminate to enter end of scan rank
Section, then reenters work scanning mode；
If into metering state：Metering is initially entered, and opens metering row's device for discharging, while gathering start-up time metering
Storehouse actual weight, and start timing t, then measuring chute weight after Real-time Collection start-up time calculates measuring chute and calculates the weight m；
Whether the judgement m that calculates the weight reaches metering target weight, if when the m that calculates the weight reaches metering target weight, shut-off metering row
Device for discharging, metering state terminates, and otherwise, not up to measures target and is then again introduced into calculating measuring chute and calculate the weight m.
Further, the m computing formula that calculate the weight of measuring chute are as follows：M=mo+s×t-mr+mc；Wherein mcIt is a machine
Tool amendment deviation.
In addition, a kind of engineering machinery is additionally provided, including above-mentioned material measuring device.
The invention provides a kind of material measuring device and method and engineering machinery, realize depositing simultaneously using a measuring chute
The function of warehouse and measuring chute, simplifies mechanical structure, reduces material measuring device volume；Metering can be opened at any time
Begin, target weight is more than without waiting for weight in measuring chute；The metering feeding mouth of metering process measuring chute can continue charging, nothing
Metering feeding mouthful need to be closed down.
Brief description of the drawings
The accompanying drawing for constituting a part of the invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate, for explaining the present invention, not constitute 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 gauge amount method schematic diagram of the present invention；
Fig. 4 is that Fig. 3 enters metering state schematic diagram.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
With reference to Fig. 1 and Fig. 2, the preferred embodiments of the present invention are described in further detail, this preferred embodiment
Material measuring device：As shown in figure 1, material measuring device is only realized with a measuring chute 11, and it is equipped with control as shown in Figure 2
Device.As shown in figure 1, the bottom of measuring chute 11 is provided with metering row's device for discharging 13, top is provided with metering feeding mouthful 14.Material
12 enter measuring chute 11 from metering feeding mouthful 14, and material 12 measures disposing material from metering row's discharge measuring chute 11 of device for discharging 13
Device 13 drives opening and closing by metering row's device for discharging driver element 4；So as to control the discharge rate of measuring chute 11.Weight is passed
Sensor 10 is arranged between measuring chute 11 and frame 1, and is kept rigidity and connected without interference；Weight sensor is by 3 by controlling
The signal processing unit in weight signal collecting unit collection signal, and controller 2 in device 2 is processed.
Weight sensor 10 is connected by cable 5 with controller 2, and metering row's device for discharging driver element 4 passes through cable 5
It is connected with controller 2.When calculating charging rate state is entered, controller 2 is counted according to the signal of weight sensor 10 of collection
Calculate charging rate s；When metering state is entered, controller 2 calculates measuring chute metering according to the signal of weight sensor 10 of collection
Weight m, and whether the m that judges to calculate the weight reaches metering target weight mt, control metering row's device for discharging driver element 4.
Shown in specific materia metering method as Fig. 3 and Fig. 4, into work scanning mode s30, metering request is determined whether
s31；If during without metering request, into calculating charging rate state s34；Otherwise, into metering state s32；
If into calculating charging rate state s34；Material 12 enters measuring chute 11, measuring chute 11 from metering feeding mouthful 14
Weight increases.According to setting collection metering rate, measuring chute weight is gathered；Between the changing value incrementss of measuring chute weight and sampling
It is charging rate s to be instantaneous mass density current amount every the ratio between time；Calculate and terminate to enter end of scan stage s33, then again
Into work scanning mode s30；
If into metering state s32；Metering initially enters s40, metering row device for discharging s41 is first opened, while collection
Start-up time measuring chute actual weight mo, material 12 from metering row device for discharging 13 discharge measuring chute 11, start timing t, in real time
Measuring chute weight m after collection start-up timer, calculate measuring chute and calculate the weight ms42；The m computing formula that calculate the weight are as follows：
M=mo+s×t-mr+mc；
Wherein mcIt is a mechanical correction deviation, comprising measuring gate closing process material leakage etc..
After getting the m that calculates the weight, whether the judgement m that calculates the weight reaches metering target weight mtS43, as the m that calculates the weight
Approach metering target weight mtWhen, can for example take m >=mtMode, shut-off metering row device for discharging s44, metering state knot
Beam s45.If not arriving metering target weight mtThen reenter calculating measuring chute to calculate the weight m, with the passage of timing t, so
After go successively to judgement and calculate the weight ms44, until reaching metering target weight mt。
Present invention also offers a kind of engineering machinery including the material measuring device.Material measuring device can be used for powder
The gage work of material or siccative or fluid, for example：Concrete, cement, building stones etc..
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of material measuring device, it is characterised in that including measuring chute (11) and weight sensor (10) and controller (2),
Metering row's device for discharging driver element (4), weight sensor (10) for detecting measuring chute (11) weight, on (11) open by measuring chute
It is provided with metering row's device for discharging (13) and metering feeding mouthful (14)；Metering row's device for discharging driver element (4) is for opening and closing
Metering row's device for discharging (13) is closed, when calculating charging rate state is entered, weight sensor of the controller (2) according to collection
(10) signal, calculates charging rate s；When metering state is entered, weight sensor (10) signal of controller (2) according to collection
And the charging rate s being calculated, calculate measuring chute (11) and calculate the weight m, and whether the m that judges to calculate the weight reaches metering mesh
Indicated weight amount, control metering row's device for discharging driver element (4).
2. material measuring device according to claim 1, it is characterised in that metering feeding mouthful (14) is positioned at measuring chute (11)
Upper end, metering row's device for discharging (13) is positioned at measuring chute (11) bottom.
3. material measuring device according to claim 1 and 2, it is characterised in that including frame (1), measuring chute (11) peace
In frame (1), weight sensor (10) is between frame (1) and measuring chute (11).
4. a kind of materia metering method, it is characterised in that enter work scanning mode (s30), determines whether metering request
(s31)；If during without metering request, into calculating charging rate state (s34)；Otherwise, into metering state (s32)；
If into calculating charging rate state (s34)：According to setting sampling rate, measuring chute (11) weight is gathered；Measuring chute
(11) it is charging rate s that the ratio between the changing value of weight and sampling interval duration are instantaneous mass density current amount；Calculate and terminate to enter
In the end of scan stage (s33), then reenter work scanning mode (s30)；
If into metering state (s32)：Metering is initially entered (s40), opens metering row's device for discharging (s41), while collection
Start-up time measuring chute (11) actual weight mo, and start timing t, then measuring chute (11) weight after Real-time Collection start-up time
mr, calculate measuring chute (11) and calculate the weight m (s42)；Whether the judgement m that calculates the weight reaches metering target weight mt(s43), if
The m that calculates the weight reaches metering target weight mtWhen, shut-off metering row's device for discharging (s44), metering state terminates (s45), otherwise,
Not up to metering target is then again introduced into calculating measuring chute (11) and calculates the weight m (s42).
5. materia metering method according to claim 4, it is characterised in that the m that calculates the weight of measuring chute (11) calculates public
Formula is as follows：M=mo+s×t-mr+mc；Wherein mcIt is a mechanical correction deviation.
6. a kind of engineering machinery, it is characterised in that including the material measuring device described in claims 1 to 3 any one.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104089689A CN104089689A (en) | 2014-10-08 |
| CN104089689B true CN104089689B (en) | 2017-06-13 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679913A (en) * | 1979-12-04 | 1981-06-30 | Kubota Ltd | Metering method |
| US4793512A (en) * | 1985-08-26 | 1988-12-27 | Stock Equipment Copy | Apparatus and method for feeding particulate material such as coal and other bulk materials |
| CN102175294B (en) * | 2011-01-20 | 2013-06-12 | 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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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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