CN101666673A - Panel bearing type electronic belt scale - Google Patents
Panel bearing type electronic belt scale Download PDFInfo
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- CN101666673A CN101666673A CN200910095015A CN200910095015A CN101666673A CN 101666673 A CN101666673 A CN 101666673A CN 200910095015 A CN200910095015 A CN 200910095015A CN 200910095015 A CN200910095015 A CN 200910095015A CN 101666673 A CN101666673 A CN 101666673A
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- panel bearing
- belt conveyor
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Abstract
The invention relates to a panel bearing type electronic belt scale. A weighing device comprises a weighing sensor (4), a connecting element (3) arranged on the weighing sensor and a weighing panel (2) mounted at the top of the connecting element (3). The weighing panel (2) is positioned below a conveyor belt (5) and adhered to the conveyor belt. By utilizing the invention, the gravity of materials can be directly and effectively used in the weighing sensor, and the influence of belt effect to computation can be further overcome, with high weighing accuracy and good long term stability.
Description
Technical field
The present invention relates to the belted electronic balance technical field.
Background technology
Employed in the market belted electronic balance all is to use weighing carrier roller as material weight transfer mechanism.And when equipment operation, material is above belt conveyor, and sensor is below belt conveyor, and belt conveyor is in the middle of both.Material is to be delivered to by belt conveyor earlier to be sent to sensor on the weighing carrier roller again by metering section to the pressure overwhelming majority that sensor produced.And the flow rate calculation of belted electronic balance is the product of institute's weighing quality of material on belt speed by belt feeder and the belt unit length.Usually the belt speed of belt conveyer scale not only can accurately measure, and also can control effectively, and therefore for the speed-governing belt scale, the precision of metering mainly depends on and the accurate measurement of sensor to material gravity.Because belt is as the media that transmits gravity, its rigidity is very poor, material is on acting on belt the time, belt is in operation and constantly produces flexural deformation repeatedly between each carrying roller, according to force analysis, the signal of the pressure transducer of belt conveyer scale institute capacity, actual is that the component of the material gross mass of weighing section and belt tension in the vertical direction is poor, the component and the belt tension that are a part of gravity offset, and the component of a part of gravity is delivered on the LOAD CELLS.But the belt conveyor poor rigidity, sinking after being subjected to gravity is inevitably, so material gravity can't be delivered on the LOAD CELLS truly, exactly, therefore the error that produces owing to belt tension is difficult to eliminate.If this error amount is a stationary value, we can come calibration error by the mode of revising school scale coefficient when verification, and belt conveyer scale will be a comparatively accurate and stable value for the metering and the control of mass flow.But because the size of belt tension causes the variation of belt tension with environmental changes such as what and temperature of inventory, humidity, caused the continuous variation of belt tension, promptly so-called " belt effect ", thus the measuring accuracy of belt conveyer scale and stability are greatly affected.
Obviously, belt tension is an outwardness, can't change.The variation of belt tension is the factor that influences the maximum of weighing precision and stability.Change tensioning mode (as constant force tensioning mode) and help tension variation relatively steadily but can't eliminate, also can not be steady in a long-term.Therefore, use weighing carrier roller as the belt conveyer scale of material weight transfer mechanism in actual applications, the long-time stability of belt conveyer scale are poor.
In addition, when equipment operation calculates, sensor comes by the belt conveyor transmission the induction overwhelming majority of material gravity, be not that material is directly delivered on the sensor, material is very short a flash in the time by weighing carrier roller, so sensor is true, the time that effectively induces weight of material also has only this very short a flash, therefore material in course of conveying owing to tumbling that gravity or other external force effects produce, squeeze to move to produce when waiting relative motion to make sensor accept gravity and disturb, have the unsettled situation of data, thereby cause metering inaccurate.
In sum, material gravity can be delivered on the LOAD CELLS fully, accurately, not having other external force when just requiring the belt conveyer scale metering disturbs, and conveying belt can not produce deformation when convey materials, and this also becomes the gordian technique that belted electronic balance improves precision and long-time stability.
Summary of the invention
The objective of the invention is to overcome the existing deficiency of above-mentioned belted electronic balance, provide a kind of material gravity can be directly, useful effect is in LOAD CELLS, and can overcome " belt effect " influence, precision height, the panel bearing type electronic belt scale that long-time stability are good to metering.
The objective of the invention is to be achieved through the following technical solutions.
Panel bearing type electronic belt scale, its weighing device comprise LOAD CELLS, place the connecting elements on the LOAD CELLS and be installed on the flat board of weighing at connecting elements top, and the flat board of weighing is positioned at below the belt conveyor and with belt conveyor and pastes mutually.
One cover or the above weighing device of a cover can be set below each belted electronic balance belt conveyor of the present invention, form the weighing device of multi weighing panel bearing.Under each flat board of weighing one or more LOAD CELLS can be set.
The present invention has the following advantages:
1. effectively improve reliability, the long-time stability of belted electronic balance.The Weighing method of panel bearing makes belted electronic balance avoid material gravity belt to be produced the effect of plastic deformation when operation, allow material gravity be directly delivered on the LOAD CELLS, be similar to the static weighing that on flat board, has filled up belt, overcome " the belt effect " of belt conveyer scale, eliminated the influence of the continuous irregular variation of belt tension to greatest extent, the reliability of belted electronic balance, long-time stability are greatly improved metering;
2. the measuring accuracy of belted electronic balance is improved.The Weighing method of panel bearing since material to directly act on the dull and stereotyped time long, sensor is directly responded to the time of material gravity and is just grown, the error that the material relative motion is produced is by homogenizing, avoided the influence to measuring accuracy of data instabilities, kick.In addition, flat board and the contacted area of belt are big in the weighing area, can play the effect of mechanical filtering to belt, and the thin plate vibrations that produced when having eliminated the belt operation are to the interference of metering, the measuring accuracy of raising belted electronic balance;
3. reduce adjustment, the maintenance workload of belted electronic balance.Because factors such as " belt effect " that the Weighing method of panel bearing can be weighed to influence, belt vibrations are eliminated, significantly improve the measuring accuracy and the stability of belted electronic balance, therefore the belted electronic balance of this type need not often zeroing and safeguards, has significantly reduced the workload of adjustment, maintenance.
Further set forth content of the present invention below in conjunction with Figure of description.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention;
Fig. 2 is the synoptic diagram that two cover weighing devices are set below belt conveyor.
Embodiment
As shown in Figure 1, belted electronic balance basic structure of the present invention mainly by belt conveyor 5, be positioned at the metering carrying roller 1,1 at two ends below the belt conveyor ' and be positioned at two weighing devices in the middle of the metering carrying roller and form, weighing device comprises LOAD CELLS 4, it is dull and stereotyped 2 to place the connecting elements 3 on the LOAD CELLS and be installed on weighing of connecting elements 3 tops, weighs dull and stereotyped 2 to be positioned to amplexiform mutually below the belt conveyor 5 and with belt conveyor 5 and to touch.One cover weighing device can only be set below the belt conveyor 5 of each belted electronic balance, two covers or the above weighing device of two covers also can be set, form the weighing device of multi weighing panel bearing, two cover weighing devices are set as shown in Figure 2.Each is weighed and dull and stereotyped 2 times a LOAD CELLS 4 can only be set, and also two or more LOAD CELLS can be set.With single dull and stereotyped dual sensor supporting is example, weighing dull and stereotyped 2 both sides can be respectively by 4 supporting of two LOAD CELLS, when operation, after belt conveyor 5 drives the metering carrying roller 1 of material through an end, LOAD CELLS 4 begins to sense the gravity of material, and material arrives and weighed dull and stereotyped 2 o'clock, and LOAD CELLS 4 can be sensed the gravity of material directly, really, when material through other end metering carrying roller 1 ' after, metering finishes.When using, must consider especially as LOAD CELLS 4 and be supported on when weighing dull and stereotyped 2 middle part, dull and stereotyped 2 the area of weighing is crossed the use plane limit range that conference exceeds LOAD CELLS 4, make the time the weigh leverage of dull and stereotyped 2 pairs of LOAD CELLS 4 of metering excessive and produce error, therefore need connecting elements 3 be set between flat board and the LOAD CELLS weighing, its role is to make that weigh dull and stereotyped 2 can only vertical up-or-down movement, and LOAD CELLS 4 also only can be subjected to material action of gravity vertically downward, avoid of the interference of other external force, guarantee the accuracy of metering metering.
As shown in Figure 2, with the belted electronic balance of using of the present invention pair of panel bearing mode is example, its mainly by drive of motor and speed counting device 6, band conveyor 7 and by metering carrying roller 1,1 ', weigh dull and stereotyped 2,2 ', connecting elements 3,3 ', LOAD CELLS 4,4 ' form.Adopt the mode of two panel bearings, two weigh dull and stereotyped 2,2 ' be positioned at two metering carrying rollers 1,1 ' centre, each dull and stereotyped both sides of weighing is respectively by two LOAD CELLS supportings.Pass through as the belt conveyor 5 of material from band conveyor 7, behind metering carrying roller 1, the weight of material passes to each LOAD CELLS by the flat board of weighing, LOAD CELLS produces the voltage signal that is proportional to weight of material, after realizing signal amplification, filtering, transmitter is transferred in the module of PLC 8, weight signal P after PLC 8 changes process A/D and the rate signal V from drive of motor and speed counting device 6 carry out computing, control, provide data such as weight, speed, flow from the display device that is connected with PLC 8 signals at last.
Claims (3)
1, panel bearing type electronic belt scale, comprise belt conveyor (5), be arranged at the metering carrying roller (1,1 ') at two ends below the belt conveyor, be positioned at two weighing devices in the middle of the metering carrying roller, it is characterized in that, described weighing device comprises LOAD CELLS (4), place the connecting elements (3) on the LOAD CELLS and be installed on the flat board of weighing (2) at connecting elements (3) top, and the flat board of weighing (2) is positioned at below the belt conveyor (5) and with belt conveyor and pastes mutually.
2, panel bearing type electronic belt scale according to claim 1 is characterized in that, a cover or the above weighing device of a cover are set below each belted electronic balance belt conveyor (5), forms the weighing device of multi weighing panel bearing.
3, panel bearing type electronic belt scale according to claim 1 is characterized in that, under each flat board of weighing (2) one or more LOAD CELLS (4) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095015A CN101666673A (en) | 2009-09-28 | 2009-09-28 | Panel bearing type electronic belt scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095015A CN101666673A (en) | 2009-09-28 | 2009-09-28 | Panel bearing type electronic belt scale |
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| Publication Number | Publication Date |
|---|---|
| CN101666673A true CN101666673A (en) | 2010-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910095015A Pending CN101666673A (en) | 2009-09-28 | 2009-09-28 | Panel bearing type electronic belt scale |
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| CN (1) | CN101666673A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706087A (en) * | 2016-12-23 | 2017-05-24 | 江苏宏宝工具有限公司 | Automatic online weighing device realized by use of wireless power transmission technology |
| CN110482183A (en) * | 2019-08-02 | 2019-11-22 | 浙江工业大学 | Flux controllable Dynamic High-accuracy flow claims |
| CN110491021A (en) * | 2019-09-10 | 2019-11-22 | 深圳市乐活天下股份有限公司 | A kind of the gravity sensing structure and its settlement method of intelligent micro supermarket |
| CN110550384A (en) * | 2019-07-31 | 2019-12-10 | 浙江工业大学 | High-precision flow scale based on soft conveying belt structure |
-
2009
- 2009-09-28 CN CN200910095015A patent/CN101666673A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706087A (en) * | 2016-12-23 | 2017-05-24 | 江苏宏宝工具有限公司 | Automatic online weighing device realized by use of wireless power transmission technology |
| CN110550384A (en) * | 2019-07-31 | 2019-12-10 | 浙江工业大学 | High-precision flow scale based on soft conveying belt structure |
| CN110482183A (en) * | 2019-08-02 | 2019-11-22 | 浙江工业大学 | Flux controllable Dynamic High-accuracy flow claims |
| CN110491021A (en) * | 2019-09-10 | 2019-11-22 | 深圳市乐活天下股份有限公司 | A kind of the gravity sensing structure and its settlement method of intelligent micro supermarket |
| CN110491021B (en) * | 2019-09-10 | 2021-08-10 | 深圳市乐活天下股份有限公司 | Gravity sensing structure of intelligent micro supermarket and settlement method thereof |
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Open date: 20100310 |