CN2615652Y - Leather belt conveyor metering device based on dynamic measurement - Google Patents
Leather belt conveyor metering device based on dynamic measurement Download PDFInfo
- Publication number
- CN2615652Y CN2615652Y CN 03221837 CN03221837U CN2615652Y CN 2615652 Y CN2615652 Y CN 2615652Y CN 03221837 CN03221837 CN 03221837 CN 03221837 U CN03221837 U CN 03221837U CN 2615652 Y CN2615652 Y CN 2615652Y
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- belt
- kinetic measurement
- device based
- weighing sensor
- metering device
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Abstract
A belt conveyer metering device based on kinetic measurement comprises a weighing sensing device, a tacho-generator, an A/D converting segment and a data processing device. The output of the weighing sensing device and the tacho-generator is imported to the data processing device after being A/D converted. The belt conveyer metering device based on kinetic measurement is characterized in that the weighing sensing device is located under each supporting leg of the conveyer frame to support the weight of each supporting leg. The utility model has little relationship with tension and obliqueness of the hide rope and overcomes the defect of unstable measuring accuracy and the error caused by slippage of belt or other factors of the traditional belt balance on principle. The precision of the kinetic measurement can reach 0.1 percent, so the belt conveyer metering device based on kinetic measurement is widely suitable in measure of material of storage, large-scale industrial and mining establishments, harbor, mine, and the same.
Description
Technical field
The utility model relates to a kind of measuring apparatus, is specifically related to a kind of measuring apparatus based on kinetic measurement, is used for the material of carrying on the conveyer belt is carried out the high-speed real-time metering.
Background technology
At storage, harbour, mine and large industrial enterprise, extensively adopt band conveyor, thereby need the bulk material of carrying be measured, existing measuring apparatus is generally belted electronic balance, comprises the scale frame, tachogenerator and the display device that contain LOAD CELLS, scale frame wherein generally is made up of weighing carrying roller 2, the supporting edge of a knife 4, weighing arm 5 and LOAD CELLS 3, as shown in Figure 1, its measuring principle is that (1) obtains the linear velocity v of belt movement by tachogenerator; (2) specimen sample is carried out at fixed interval, obtains instantaneous weight w, and the sample of sampling in a reference time carries out the arithmetic mean processing, obtains the average weight W of reference time; (3) add a factor alpha and adjust accuracy, ∑ m=Wv α; (∑ m is a unit interval weight); (4) by the long-pending weight that can get a time period of ∑ m and time and.
This structure, can realize kinetic measurement to convey materials, yet, owing to be the weight of measuring material by belt, there is influence in the elasticity of belt to weight transmitting, because the unevenness in the bulk material course of conveying, the tensile force of belt constantly becomes meeting, directly affects the order of accuarcy of metering; Simultaneously, when conveyer belt and surface level have certain inclination angle, need add the inclination correction amount, and in the actual use,, promptly can influence the size at inclination angle, cause error in dipping if microdeformation takes place the frame of scale frame and band conveyor; In addition, the supporting edge of a knife also can influence the accuracy of metering.Thereby, the structure of existing belted electronic balance and the existence that measuring principle has caused bigger error in dipping, though people attempt to try hard to reduce above-mentioned error by improving the scale shelf structure, effect is little.
Summary of the invention
The utility model purpose provides a kind of band conveyor measuring apparatus based on kinetic measurement, improves metering accuracy by structural change.
For achieving the above object, the technical solution adopted in the utility model is: a kind of band conveyor measuring apparatus based on kinetic measurement, comprise weighing sensor, tachogenerator, A/D converting member and DPA data processing activity, the output of described weighing sensor and tachogenerator is the input data processor structure after the A/D conversion, described weighing sensor is arranged in each support foot below of conveyor frame, the weight of carrying each support foot.
In the technique scheme, described A/D converting member is used for converting signal of sensor to digital signal, can comprise signal amplification circuit, filtering integer circuit, A/D change-over circuit usually; Described DPA data processing activity generally adopts computing machine (as PC).The A/D converting member can be made interface card, inserts in the slot of computing machine.
In the technique scheme, described tachogenerator can comprise the sign of being located on the conveyer belt that tests the speed, and to the described sign sensor sensitive that tests the speed.This mode can directly record the movement velocity of belt, and measurement result is accurate, wherein, can adopt various sensing modes, as magnetic sensor, hall device, photoelectric sensor or the like.
In the technique scheme, the number of described weighing sensor is identical with the number of conveyor rack support pin, support foot of each weighing sensor carrying.For band conveyor, 4 to 6 support foots are arranged usually, when transport way is longer, have more support foot, under the rare occasion, also may have only 2 support foots, no matter which kind of situation, under each support foot, place a weighing sensor, promptly whole conveyor is supported, can obtain the general assembly (TW) of the material that moves on conveyor and the belt thereof by a plurality of weighing sensors.
In the technique scheme, described A/D converting member is a high-speed, high precision A/D converting member.
The utility model principle of work is: by the material of carrying on a plurality of weighing sensor carrying conveyors (containing propulsion system) and the conveyor, the signal voltage value and the bearing capacity of weighing sensor output are linearly proportional.When conveyor is in work (motion) state, the promptly above two weight sums of its instantaneous weight, in the enough short time, record this gravity sum, deduct the weight of conveyor, the material that is transferred so can be measured accurately, after once metering finishes, begin metering should the A2 point runs to the A1 point in as accompanying drawing 2 time next time; Running then can accurately be measured by the material on the conveyor and so forth.
Guarantee the accuracy of measuring to should be noted that 2 points;
The one, accurate timing: by the accurate timing device of primary control program control microcomputer generation, can obtain accurate timing, and the accurate sampling time, when the conveyer belt travelling speed is relatively stable, guarantee sampling each time all with the time that equates, and the time span of sampling interval equates too., adjust this at interval by primary control program, thereby actual samples is changed with the variation of belt feeder speed at interval by tachogenerator monitoring loopback micro computer by the unstable rule of conveyor speed due to the extraneous factor.The accurate linking of metering section before and after having guaranteed, unlikely overlapping or disappearance.
The 2nd, instantaneous high speed check weighing: high-speed, high precision A/D converting member need satisfy its intrinsic technical indicator as the basis of instantaneous high speed check weighing; Its conversion accuracy should be higher than order of magnitude of device degree of accuracy, simultaneously enough fast slewing rate will be arranged, so that can gather abundant data sample in a sampling period, just is of practical significance on the discreteness data statistics is handled.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. because the utility model is positioned over conveyor rack support underfooting with weighing sensor, by measuring the general assembly (TW) of conveyor and material, the weight that deducts conveyor obtains the weight of a certain section material, thereby with the rate of tension of belt, degree of tilt etc. it doesn't matter, overcome the unsettled defective of the conventional belt scale accuracy of measuring from principle;
2. this device can be adjusted sampling interval according to the belt transporting velocity, when having avoided calculating belt speed indirectly by roll shaft or motor speed, the error that may cause because of factors such as belt slip, the dynamic measurement precision can reach 0.1%, is widely used in storing in a warehouse, the material metering of large industrial enterprise, harbour, mine etc.
Description of drawings
Accompanying drawing 1 is the belted electronic balance scale shelf structure synoptic diagram of prior art;
Accompanying drawing 2 is the structural representation of the utility model embodiment one;
Accompanying drawing 3 is the control circuit principle schematic of embodiment one.
Wherein: [1], belt; [2], carrying roller; [3], weighing sensor; [4], supporting knife rest; [5], weighing arm; [6], support foot; [7], tachogenerator; [8], A/D converting member; [9], DPA data processing activity; [10], material.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 2 and accompanying drawing 3, a kind of band conveyor measuring apparatus based on kinetic measurement, comprise 4 weighing sensors 3, tachogenerator 7, A/D converting member 8 and DPA data processing activity 9, described 4 weighing sensors 3 are arranged in 4 support foot 6 belows of conveyor frame respectively (when the conveyor frame of using has 6,8 or more support foot, the weighing sensor of adapted respective numbers), carry the weight of each support foot, the output of described weighing sensor 3 and tachogenerator 7 is input data processor structure 9 after the A/D conversion.
In the present embodiment, described tachogenerator 7 comprises the sign of being located on the conveyer belt 1 that tests the speed, and to the described sign sensor sensitive that tests the speed, such as can on belt, fixing a magnet as testing the speed sign, and with magnetic inductor as sensor.
The DPA data processing activity 9 of present embodiment adopts PC, the A/D converting member is made the interface card of PC, comprise signal amplification circuit, filtering and the impedance matching circuit, A/D conversion chip and the logical controlling circuit that are connected with sensor, the control bus and the data bus that connect PC by interface, wherein, the analog to digital converter that adopts is AD676, have up to the sampling rate of 100KSPS and ± 1 yard conversion accuracy.
Claims (4)
1. band conveyor measuring apparatus based on kinetic measurement, comprise weighing sensor [3], tachogenerator [7], A/D converting member [8] and DPA data processing activity [9], the output of described weighing sensor [3] and tachogenerator [7] is input data processor structure [9] after the A/D conversion, it is characterized in that: described weighing sensor [3] is arranged in each support foot [6] below of conveyor frame, carries the weight of each support foot [6].
2. band conveyor measuring apparatus as claimed in claim 1 is characterized in that: described tachogenerator [7] comprises the sign of being located on the conveyer belt [1] that tests the speed, and to the described sign sensor sensitive that tests the speed.
3. band conveyor measuring apparatus as claimed in claim 1 is characterized in that: the number of described weighing sensor [3] is identical with the number of conveyor rack support pin [6], each weighing sensor [3] carrying support foot [6].
4. band conveyor measuring apparatus as claimed in claim 1 is characterized in that: described A/D converting member [8] is a high-speed, high precision A/D converting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221837 CN2615652Y (en) | 2003-05-13 | 2003-05-13 | Leather belt conveyor metering device based on dynamic measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221837 CN2615652Y (en) | 2003-05-13 | 2003-05-13 | Leather belt conveyor metering device based on dynamic measurement |
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| Publication Number | Publication Date |
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| CN2615652Y true CN2615652Y (en) | 2004-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03221837 Expired - Fee Related CN2615652Y (en) | 2003-05-13 | 2003-05-13 | Leather belt conveyor metering device based on dynamic measurement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387325C (en) * | 2006-01-11 | 2008-05-14 | 雷景华 | Air purifier |
| CN102012252A (en) * | 2010-07-26 | 2011-04-13 | 新兴铸管股份有限公司 | Computer-monitored electronic belt scale |
| CN103823436A (en) * | 2014-02-08 | 2014-05-28 | 滁州市西控电子有限公司 | Distributed metering management method and system thereof |
| CN105241537A (en) * | 2015-09-17 | 2016-01-13 | 赛摩电气股份有限公司 | Device and method for adjusting weighing precision stability of electronic belt scale |
| US10768038B2 (en) | 2017-10-27 | 2020-09-08 | Industrial Technology Research Institute | Conveyor with a weighing system for weighing cargoes and weighing method thereof |
| CN114485869A (en) * | 2022-02-11 | 2022-05-13 | 南京赛摩三埃工控设备有限公司 | Speed measurement calibration control system and method for belt weigher and belt weigher |
-
2003
- 2003-05-13 CN CN 03221837 patent/CN2615652Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387325C (en) * | 2006-01-11 | 2008-05-14 | 雷景华 | Air purifier |
| CN102012252A (en) * | 2010-07-26 | 2011-04-13 | 新兴铸管股份有限公司 | Computer-monitored electronic belt scale |
| CN103823436A (en) * | 2014-02-08 | 2014-05-28 | 滁州市西控电子有限公司 | Distributed metering management method and system thereof |
| CN105241537A (en) * | 2015-09-17 | 2016-01-13 | 赛摩电气股份有限公司 | Device and method for adjusting weighing precision stability of electronic belt scale |
| CN105241537B (en) * | 2015-09-17 | 2018-01-09 | 赛摩电气股份有限公司 | A kind of method of adjustment of belted electronic balance weighing precision stability |
| US10768038B2 (en) | 2017-10-27 | 2020-09-08 | Industrial Technology Research Institute | Conveyor with a weighing system for weighing cargoes and weighing method thereof |
| CN114485869A (en) * | 2022-02-11 | 2022-05-13 | 南京赛摩三埃工控设备有限公司 | Speed measurement calibration control system and method for belt weigher and belt weigher |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |