CN202928667U - Dynamic metering device - Google Patents
Dynamic metering device Download PDFInfo
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- CN202928667U CN202928667U CN 201220659465 CN201220659465U CN202928667U CN 202928667 U CN202928667 U CN 202928667U CN 201220659465 CN201220659465 CN 201220659465 CN 201220659465 U CN201220659465 U CN 201220659465U CN 202928667 U CN202928667 U CN 202928667U
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Abstract
The utility model relates to a dynamic metering device, which belongs to the conveying metering technology field. The dynamic metering device comprises a data processing unit, a belt weigher and a velocity measurement sensor; and a first sensor for weighing is arranged on the belt weigher. Besides, the dynamic metering device also includes a second sensor for measuring a pulling force of a conveyer belt on a belt conveyor; and the second sensor is connected with the data processing unit. According to the utility model, the sensor for detecting the pulling force of the conveyer belt is arranged on the existing dynamic metering device, thereby detecting the dynamic changing value of the pulling force of the conveyer belt timely; the dynamic changing value is transmitted to the data processing unit; and after the operation processing by the data processing unit, a high-precision weighing value can be obtained.
Description
Technical field
The utility model relates to a kind of transport metering mechanism, particularly a kind of device for material cumulative weight on the dynamic measurement conveying belt.
Background technology
Existing dynamic metering device generally comprises setting-in type belt conveyer scale and complete machine type belt conveyer scale, and the setting-in type belt conveyer scale band conveyor supporting with it can not manufacture and design simultaneously.The conveyor that complete machine type belt conveyer scale is required comprises and carries frame, cylinder and carrying roller, belt conveyor, drive motor etc., and makes one with the belt balance weighing parts.the principle of work of above-mentioned belt conveyer scale: when material moves to the belt conveyer scale position on belt, the belt balance weighing carrying roller is produced downward acting force, by claim body with the acting force effect to LOAD CELLS, strain ga(u)ge resistance on the sensor internal elastic body changes, change this resistance variations into voltage signal by metering circuit and export arithmetical unit to, described arithmetical unit is in connection with calculated the inventory in each cycle by the detected Belt Conveying velocity amplitude of speed pickup, by to adding up each measuring period, the material total amount that can obtain passing through continuously on belt.Although existing belt conveyer scale have measure easy, be applicable to the advantage such as suitability for industrialized production, its measuring accuracy is difficult to guarantee.
Affect belt conveyer scale weighing degree of accuracy and mainly contain following factor: 1, feed homogeneity.When feed was even, the variation of belt pull was just little, and the degree of accuracy of belt conveyer scale is just high; 2. belt speed.The tension variations frequency of belt is low when belt speed is low, and the degree of accuracy of belt conveyer scale is just high; 3. the length of band conveyor.When the length of band conveyor was longer, the conveying pulling force of belt must increase, and then has a strong impact on the measuring accuracy of belt conveyer scale.In sum, the essence that affects the belt conveyer scale measuring accuracy is the variation of belt pull, yet prior art does not have good solution to eliminate belt pull to the impact of measuring accuracy.The existing conventional method that strengthens the belt conveyer scale measuring accuracy is to improve between band conveyor and belt conveyer scale carrying roller to collimate degree of accuracy, because this collimation degree of accuracy is along with the use of band conveyor reduces gradually, and the calibration of collimation degree of accuracy only has belt conveyer scale manufacturer just can complete, so factory safeguards that the maintenance cost that the degree of accuracy of belt conveyer scale spends is high.
For the deficiencies in the prior art, need to explore a kind of more accurate dynamic metering device.
Summary of the invention
In view of this, the utility model provides a kind of dynamic metering device, and this dynamic metering device has solved the problem that the belt pull of belt conveyer scale in the prior art has a strong impact on measuring accuracy.
The utility model solves the problems of the technologies described above by following technological means:
Dynamic metering device of the present utility model, comprise data processing unit, be arranged on band conveyor belt conveyer scale and for detection of the tachogenerator of conveying belt transfer rate, be provided with on described belt conveyer scale be used to the first sensor of weighing, comprise that also described the second sensor is connected with data processing unit for the second sensor of measuring band conveyor upper conveyor belt pulling force.
Further, described band conveyor comprises head cylinder, stern roll, conveying belt and is used for the strainer of Conveyer Belt, and described the second sensor setting is on strainer.
Further, described strainer comprises tensioning bolt, and described tensioning bolt is against in the rotating shaft of head cylinder or stern roll, and described the second sensor is connected with tensioning bolt.
Further, described strainer is vertical gravity formula take-up device or horizontal gravity formula take-up device, and described vertical gravity formula take-up device or horizontal gravity formula take-up device comprise weight and drag-line, and described the second sensor is connected with drag-line.
Further, described first sensor and the second sensor are resistance strain type sensor.
Further, described data processing unit is PC, PLC, single-chip microcomputer or MCU.
The beneficial effects of the utility model: dynamic metering device of the present utility model, comprise data processing unit, be arranged on band conveyor belt conveyer scale and for detection of the tachogenerator of conveying belt transfer rate, be provided with on described belt conveyer scale be used to the first sensor of weighing, comprise that also described the second sensor is connected with data processing unit for the second sensor of measuring band conveyor upper conveyor belt pulling force.Increase the variation that the sensor that detects the conveying belt pulling force can in time detect the conveying belt pulling force on existing dynamic metering device, with the dynamic weighing numerical value synchronous transport of this tension variations numerical value and belt conveyer scale to data processing unit, the calculation process of device as calculated, therefrom remove affecting the weigh conveying belt pulling force factor of influence of degree of accuracy of first sensor, and then obtain high-precision weighing numerical value.
In addition, described the second sensor setting on the original strainer of belt conveyer scale, can be simplified mounting structure, reduce installation cost.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the dynamic metering device structural representation with tensioning bolt of the present utility model;
Fig. 2 is the dynamic metering device structural representation with horizontal gravity formula take-up device of the present utility model;
Fig. 3 is the dynamic metering device structural representation with vertical gravity formula take-up device of the present utility model.
Embodiment
below with reference to accompanying drawing, the utility model is elaborated, as shown in Figures 1 to 3: dynamic metering device of the present utility model, comprise data processing unit 2, be arranged on the belt conveyer scale on band conveyor, tachogenerator 1, be provided with on described belt conveyer scale be used to the first sensor 3 of weighing, described first sensor 3 is connected with weighing carrier roller 12 on belt conveyer scale, described first sensor 3 is connected with tachogenerator and is connected with data processing unit 2 simultaneously in order to data processing unit 2 transmission of digital signals or simulating signal, also comprise for the second sensor 5 of measuring band conveyor conveying belt 4 pulling force, described the second sensor 5 is connected with data processing unit 2.Principle of work of the present utility model is: described the second sensor 5 detects the dynamic tension of conveyer 4 and pulling force numerical value is transferred to data processing unit 2, described first sensor 3 detects the material gravity value on belt conveyer scale and gravity value is transferred to data processing unit 2, described tachogenerator 1 detects conveying belt 4 transporting velocities and velocity amplitude is also transferred to data processing unit 2, described data processing unit 2 is processed above-mentioned numerical value by built-in operation program, removes to obtain high-precision weighing numerical value affecting weigh conveying belt 4 values of thrust of numerical value of first sensor.
As further improvement in the technical proposal, described band conveyor comprises drive motor 13, head cylinder 6, stern roll 7, conveying belt 4 and is used for the strainer of Conveyer Belt, and described drive motor 13 is in transmission connection with stern roll 7.Described the second sensor 5 is arranged on strainer.The second sensor 5 is arranged on strainer can simplifies mounting structure, reduce installation cost.Press the difference of strainer, described the second sensor 5 has following installation embodiment:
Embodiment one
As shown in Figure 1: described strainer comprises tensioning bolt 8, one end of described tensioning bolt 8 is against in the rotating shaft 9 of head cylinder or stern roll, described the second sensor 5 and tensioning bolt 8 are connected to detect the resist force of tensioning bolt 8, if in the process of conveying belt 4 part and all horizontally disposed situation of backhaul part, described resist force equals pulling force and the conveying belt 4 backhaul part pulling force sums of conveying belt 4 processes parts.
Supposing that carrying roller that the weighing carrier roller on belt conveyer scale is adjacent under the pressure of material and conveying belt is compared exists discrepancy in elevation h, so at the flex point place, just there is the vertical component V of the pulling force S of conveying belt to act on material, can obtain this component V vertically upward by resolution of force, approximate formula is: V=Sh/L (wherein L be idlers pitch from), because the conveying belt 4 of material both sides all has pulling force S, so the upwards component of actual fed band 4 should be 2V.In addition, pulling force S can calculate according to the numerical value F that the second sensor 5 is measured: S=F/2, because first sensor 5 can be measured the numerical value of h, and then V can calculate by formula V=Fh/2L.The computing formula of the actual weight value G of material is G=G
1+ 2V (G
1Gravimetry value for first sensor 3), will affect by the above formula the measurement numerical value G of first sensor 3 in the variation of the constant situation lower pulling force component V of gravity
1Variation, in the situation that component V can calculate, the numerical value of weight of material G can accurately derive out.
Embodiment two
Alternative as technique scheme, as shown in Fig. 2 and 3, described strainer is vertical gravity formula take-up device or horizontal gravity formula take-up device, described vertical gravity formula take-up device or horizontal gravity formula take-up device comprise weight 10 and drag-line 11, and described the second sensor 5 is connected with drag-line 11.Weight 10 meetings up and down vertical movement with the tension variations of conveying belt 4 when changing appears in the weight of material on conveying belt 4, inertia effect due to weight 10 can make the measurement numerical value of the second sensor 5 change at the volley, with the measurement numerical value of the second sensor 5 be delivered to carry out computing in data processing unit 2 after, the impact of tension variations can be rejected from actual measured value, and then increase measuring accuracy.
As further improvement in the technical proposal, described first sensor 3 and the second sensor 5 are resistance strain type sensor.Resistance strain type sensor can be measured pulling force, pressure and displacement etc., and it is high that resistance strain type sensor has precision, simple in structure, good frequency response, the advantage such as can work under mal-condition.
As further improvement in the technical proposal, described data processing unit 2 is PC, PLC, single-chip microcomputer or MCU.First sensor 3 and the second sensor 5 are passed to the interior single-chip microcomputer of data processing unit 2 to signal, show in digital form after processing by single-chip microcomputer.Adopt single-chip microcomputer to have simple in structure, low cost and other advantages, certain described data processing unit 2 also can be PC or PLC to strengthen automatic Verification and processing power.
Explanation is at last, above embodiment is only unrestricted in order to the technical scheme of explanation invention, although with reference to preferred embodiment, invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical scheme of invention, and not breaking away from aim and the scope of invention technical scheme, it all should be encompassed in the middle of the claim scope of invention.
Claims (6)
1. dynamic metering device, comprise data processing unit (2), be arranged on band conveyor belt conveyer scale and for detection of the tachogenerator (1) of conveying belt (4) transfer rate, be provided with on described belt conveyer scale be used to the first sensor of weighing (3), it is characterized in that: comprise that also described the second sensor (5) is connected with data processing unit (2) for the second sensor (5) of measuring band conveyor upper conveyor belt (4) pulling force.
2. dynamic metering device according to claim 1, it is characterized in that: described band conveyor comprises head cylinder (6), stern roll (7), conveying belt (4) and is used for the strainer of Conveyer Belt, and described the second sensor (5) is arranged on strainer.
3. dynamic metering device according to claim 2, it is characterized in that: described strainer comprises tensioning bolt (8), described tensioning bolt (8) is against in the rotating shaft (9) of head cylinder or stern roll, and described the second sensor (5) is connected with tensioning bolt (8).
4. dynamic metering device according to claim 2, it is characterized in that: described strainer is vertical gravity formula take-up device or horizontal gravity formula take-up device, described vertical gravity formula take-up device or horizontal gravity formula take-up device comprise weight (10) and drag-line (11), and described the second sensor (5) is connected with drag-line (11).
5. according to claim 3 or 4 described dynamic metering devices, it is characterized in that: described first sensor (3) and the second sensor (5) are resistance strain type sensor.
6. dynamic metering device according to claim 5, it is characterized in that: described data processing unit (2) is PC, PLC, single-chip microcomputer or MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659465 CN202928667U (en) | 2012-12-04 | 2012-12-04 | Dynamic metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220659465 CN202928667U (en) | 2012-12-04 | 2012-12-04 | Dynamic metering device |
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| Publication Number | Publication Date |
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| CN202928667U true CN202928667U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220659465 Expired - Fee Related CN202928667U (en) | 2012-12-04 | 2012-12-04 | Dynamic metering device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017872A (en) * | 2012-12-04 | 2013-04-03 | 重庆市渝溪产业（集团）有限公司 | Dynamic metering device |
| CN104526863A (en) * | 2014-11-26 | 2015-04-22 | 广德县中远新型建材有限公司 | Mixing conveyer of brick maker |
| CN106628841A (en) * | 2017-01-24 | 2017-05-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Dynamic metering chain plate conveyor with two-dimensional weighing function |
| CN114671212A (en) * | 2022-03-22 | 2022-06-28 | 神华天津煤炭码头有限责任公司 | Belt material flow tracking method and device and computer equipment |
-
2012
- 2012-12-04 CN CN 201220659465 patent/CN202928667U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017872A (en) * | 2012-12-04 | 2013-04-03 | 重庆市渝溪产业（集团）有限公司 | Dynamic metering device |
| CN104526863A (en) * | 2014-11-26 | 2015-04-22 | 广德县中远新型建材有限公司 | Mixing conveyer of brick maker |
| CN106628841A (en) * | 2017-01-24 | 2017-05-10 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Dynamic metering chain plate conveyor with two-dimensional weighing function |
| CN106628841B (en) * | 2017-01-24 | 2022-07-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Dynamic metering chain scraper conveyor with two-dimensional weighing function |
| CN114671212A (en) * | 2022-03-22 | 2022-06-28 | 神华天津煤炭码头有限责任公司 | Belt material flow tracking method and device and computer equipment |
| CN114671212B (en) * | 2022-03-22 | 2024-03-29 | 国能(天津)港务有限责任公司 | Belt material flow tracking method and device and computer equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20131204 |