CN2185430Y - Calibrator for belt weighing apparatus - Google Patents
Calibrator for belt weighing apparatus Download PDFInfo
- Publication number
- CN2185430Y CN2185430Y CN 93242679 CN93242679U CN2185430Y CN 2185430 Y CN2185430 Y CN 2185430Y CN 93242679 CN93242679 CN 93242679 CN 93242679 U CN93242679 U CN 93242679U CN 2185430 Y CN2185430 Y CN 2185430Y
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- China
- Prior art keywords
- chain
- belt
- frame
- counterweight
- belt conveyer
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- Expired - Fee Related
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Abstract
The utility model provides a calibration instrument for a belt weighing apparatus which is used for weighing a large amount of lumpish or powdery material. The utility model is characterized in that a plurality of high-accurate poises which do elliptic motion are driven by a chain wheel and a chain to be repeatedly loaded on the weighing section of a calibrated belt weighing apparatus in a reciprocating mode without blockage. After the signals of a time counter and a poise number sensor are automatically recorded and calculated by an intelligent data processing unit of the utility model, the calibrating running time and the cumulative weight of the poises of the weighing section are displayed. The weight is compared with the cumulative weight displayed by the calibrated belt weighing apparatus, and the error of the calibrated belt weighing apparatus is obtained.
Description
The utility model belongs to the calibrating installation of a kind of dynamometry and weighing instrument.Mainly be to belong to a kind of large, granular material to weigh with the calibrating installation of belt conveyer scale.
Belt conveyer scale is to cooperate at present the main Weighing utensil of carrying large block of granular material with travelling belt, domestic and international online use reach tens thousand of, its weighing precision is generally 0.5--1.0%.Because belt conveyer scale is a kind of important measurement instrument, so the factory of belt conveyer scale must calibrate after assembling for the user at the scene.The user also should regularly calibrate belt conveyer scale simultaneously, keeps the accurate of its weighing.Calibration steps and the device that uses mainly contains three kinds at present:
First kind of link code method calibrating installation, this device are that standard test weight is hung in the hook of scale frame, apply vertical force to the scale frame.Simulate material gravity to the scale frame when on belt, flowing through with this.Clearly, very big with the gravity difference to the scale frame in the Flow of Goods and Materials process because the vertical force of counterweight is to act on point of fixity of scale frame, so its calibration accuracy can be very not high.
In fact second kind of calibrating installation be exactly very original actual material calibration method.Though this method is very accurate owing to material object weighing in advance gets, calibration process is also very true.But unavoidably in calibration process, there is the situation of losing material to occur, causes calibration inaccurate.Again because quantity of goods produced is very big, reach hundreds of tons sometimes in addition, labor capacity was very heavy when carrying and weighing were got up.So the application actually of this method is less.
The third method is by disclosed chain code method calibrating installation in " electronic scales technology " book of the works such as Shi Hanqian of China Measuring Press's publication in 1991.This method is that some rollers that can roll are coupled together with carrier bar, forms the chain font code that quality can accurately be demarcated in advance.This chain font code is placed on the weighing section of belt conveyer scale, and an end is fixed on the tie point of belt conveyer.Operation chain font code along with belt always is pressed on the weighing section of belt conveyer scale like this, can't be dragged out away from weighing section by belt.Just can calculate to be equivalent to have how much claimed that material passes through weighing section as long as write down the time of belt operation this moment.Write down simultaneously by school belt conveyer scale displayed value, can obtain by the error of school belt conveyer scale through contrast.But because the operation of belt is the ripple of running up and down, owing to the fixing influence of chain font code one end causes the sensor of weighing section an additional impact force action still to be arranged on the sensor of weighing section except that the load that is subjected to the chain font code, institute is so that the existence of whole calibration means influences the disadvantage of precision in addition.Therefore the practicality error of getting up is very big, fluctuation of service.
The utility model purpose is the calibrating installation heaviness of avoiding above-mentioned, original existence than weak points such as mistakes, provides a kind of and raises the price continuously automatically, running automatically, conveyor belt scale calibration device that precision is high.
The utility model is to realize like this.After belt conveyer scale normally starts running, adjust the elevating mechanism of the utility model calibrating installation, can with by sprocket wheel and with hanging on of driving of the chain of its engagement and hinge axis that chain is connected on somely do elliptic motion and prior stated accuracy has reached 0.01% counterweight, load on without barrier by on the weighing section of school belt conveyer scale.Load on circularly along with counterweight on the weighing section of belt conveyer scale, be arranged at number in the display unit of counterweight number sensor on the frame and this calibrating installation and time counter and can automatically write down the number that loads on counterweight on the weighing section and load on weighing section and begin, be converted into the cumulative weight of counterweight and show to the time of throwing off from counterweight.Also in normally metering passed through the cumulative weight of weighing section counterweight by the belt conveyer scale in school this moment, and more above-mentioned two cumulative weight values can detect the error of tested belt conveyer scale.Be pointed out that the utility model calibrating installation in order further to improve calibration accuracy, taked again constantly to measure by the linear velocity of school belt conveyer scale and this calibrating installation sprocket wheel by belt speed measuring sensor and sprocket wheel tachogenerator in whole calibration process.And after these two rate signals are delivered to intelligent data processing unit in this calibrating installation and calculate the speed difference, give an order and go to adjust the linear velocity of (increase and decrease) this calibrating installation sprocket wheel to control module, thereby make the two linear differential be approximately zero.So just eliminated the additional impulsive force that causes owing to two linear differentials to the belt conveyer scale weighing section.This closed-loop control system two linear velocity differences can be controlled in 0.03%.Have again when stopping correcting travel, the intelligent data processing unit by the setting of this calibrating installation can lock this calibrating installation the cumulative weight display and working time display, control the belt that counterweight is thrown off operation simultaneously.Begin to be loaded on the timer precision of throwing off operation and reach 0.01%.
Compare with existing calibrating installation, the utility model device has following advantage:
(1) owing to loads the counterweight stated accuracy up to 0.01%, the control accuracy of the linear velocity of the belt operation of belt conveyer scale and the linear differential of this device sprocket wheel operation can reach 0.03%, has this device to reach more than 0.01% to belt conveyer scale loading and counterweight disengagement timer precision again.So this calibrating installation precision height.
(2) owing to be provided with the device of raising the price automatically that moves in circles of sprocket wheel and chain drive, high precision belt tachogenerator, sprocket wheel tachogenerator, counterweight number sensor for countering and running timer, and corresponding intelligent data processing unit, control module and display unit, guaranteed the automatization level height of this device.
Now further describe the utility model in conjunction with the accompanying drawings.
Accompanying drawing is the electromechanical structure synoptic diagram of the utility model conveyor belt scale calibration device.
Can find out that from figure the utility model conveyor belt scale calibration device is made up of following electromechanical component: the frame of framed structure (8), frame (8) can be passed through elevating mechanism (11) oscilaltion of lifting motor (2) and lower end.Two sprocket wheels (5) of main driving motor (7), reducer casing (6), bearing seat (14) being installed on the frame (8) and a bearing seat (14) supporting respectively being arranged by two ends and the chain (12) of sprocket wheel (5) engagement and five equilibrium are installed on several counterweights (3) on chain (12) axle, counterweight (3) is hung on the hinge axis (15) by connecting link (13), hinge axis (15) but supporting by four poles (4) of folding.Each pole (4) is installed on the axle of each corresponding chain (12).Be installed on the sprocket wheel tachogenerator (9) of its gear and chain (12) engagement below frame (8) crossbeam, be installed on the belt speed measuring sensor (1) that is calibrated on the belt conveyer scale engaged wheel, be installed on the sensor for countering (10) on the adjutage in frame (8) one heel post tops, the intelligent data processing unit (16) of calibrating installation, control module (17) and display unit (18), and intelligent data processing unit (16) and control module (17) respectively with sprocket wheel tachogenerator (9), belt speed measuring sensor (1), sensor for countering (10) and main driving motor (7) connecting line (19) (20) (21) (22).
The calibration process of the utility model calibration equipment is as follows:
Connection is by school belt conveyer scale instrument, and the power supply of belt conveyer operation motor and this calibrating installation main driving motor (7) makes chain (12) running of belt conveyer and this calibrating installation.Driving elevating mechanism (11) by lifting motor (2) loads on counterweight (3) on the weighing section of operation belt.Meanwhile also just started the time counter and the counterweight number sensor (10) of display unit (18), this moment, calibration just began.When counterweight (3) passes through the weighing section of belt conveyer scale, counterweight number sensor (10) just will be delivered to the intelligent data processing unit (16) of this calibrating installation by the number signal of weighing section counterweight through connecting line (21).The signal that time counter sends is also delivered to intelligent data processing unit (16) in the lump and is calculated, and shows the cumulative weight of its counterweight (3) by weighing section by display unit (18).Because counterweight (3) is to hang on the hinge axis (15) by connecting link (13), it is to drive chain (12) by main driving motor (7) to make elliptical motion that counterweight (3) is put when belt claims on the weighing section, and constantly places without barrier on the weighing section of belt conveyer scale.Thereby guaranteed that when counterweight (3) is applied on the belt conveyer scale weighing section be stably, weighing section has not been had additional force.This is one of the measure that effectively improves the calibration accuracy of this calibrating installation.Constantly will move the linear velocity signal value of belt and sprocket wheel respectively through connecting line (19 by belt speed measuring sensor (1) and sprocket wheel tachogenerator (9), 20) deliver to give an order again after the difference that intelligent data processing unit (16) calculates two speed through control module (17) and by connecting line (22) go to change main motor (7) thus the linear velocity of driving power changeable sprocket wheel, reach the linear differential that belt operation and sprocket wheel are moved and be approximately zero.This be guarantee this calibrating installation calibration accuracy measure two.When desiring to stop to calibrate, button by control intelligent data processing unit (16) can lock working time and cumulative weight value in this calibrating installation simultaneously, and control lifting motor (2) make elevating mechanism (11) start frame (8) thus make counterweight 3 throw off belts, control the motor stall of belt conveyer simultaneously.The cumulative weight value that shows of the display unit of this calibrating installation and can be drawn by the error of school belt conveyer scale relatively at last by the accumulative total displayed value of school belt conveyer scale.
Claims (2)
1, a kind of calibrating installation of belt conveyer scale, comprise frame, counterweight, the intelligent data processing unit, control module and display unit, it is characterized in that also being included in the elevating mechanism [11] of frame [8] lower end, the motor [2] of control elevating mechanism [11] oscilaltion, through main driving motor [7], reducer casing [6] and bearing seat [14] are installed on two sprocket wheels [5] on the frame [8], chain [12] with two sprocket wheels [5] engagement, five equilibrium is installed on several counterweights [3] on chain [12] axle, be installed on the sprocket wheel tachogenerator [9] of its gear and chain [12] engagement below frame [8] crossbeam, be installed on by the belt speed measuring sensor [1] of school belt conveyer scale engaged wheel axle head, be installed on the sensor for countering [10] on the adjutage in frame [8] one heel post tops.
2, calibrating installation according to claim 1, it is characterized in that counterweight ［ 3 ］ is hung on the hinge axis ［ 15 ］ by connecting link ［ 13 ］, hinge axis ［ 15 ］ but supporting by four poles ［ 4 ］ of folding, each pole ［ 4 ］ be installed on each corresponding chain ［ 12 ］ the axle on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242679 CN2185430Y (en) | 1993-10-27 | 1993-10-27 | Calibrator for belt weighing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93242679 CN2185430Y (en) | 1993-10-27 | 1993-10-27 | Calibrator for belt weighing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185430Y true CN2185430Y (en) | 1994-12-14 |
Family
ID=33816315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93242679 Expired - Fee Related CN2185430Y (en) | 1993-10-27 | 1993-10-27 | Calibrator for belt weighing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185430Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169011A (en) * | 2010-12-31 | 2011-08-31 | 上海发电设备成套设计研究院 | Method of hanging weight calibration and error automatic correction for increasing metering precision of electric weighing coal feeder |
| CN102175298A (en) * | 2011-01-26 | 2011-09-07 | 清华大学 | Automatic calibration method and device for belt scale |
| CN103148924A (en) * | 2013-03-01 | 2013-06-12 | 云南昆船电子设备有限公司 | Device and method for automatically checking electronic belt scale |
| CN103376153A (en) * | 2012-04-25 | 2013-10-30 | 软控股份有限公司 | Material verifying and weighing method and device |
| CN106276155A (en) * | 2016-07-27 | 2017-01-04 | 赛摩电气股份有限公司 | A kind of Gravimetric Coal Feeders device and calibration steps thereof |
| CN111537045A (en) * | 2020-05-07 | 2020-08-14 | 江苏远邦工业科技有限公司 | High-precision belt scale intelligent instrument |
| CN112113651A (en) * | 2019-06-22 | 2020-12-22 | 上海梅山钢铁股份有限公司 | Belt weigher calibrating device |
-
1993
- 1993-10-27 CN CN 93242679 patent/CN2185430Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169011A (en) * | 2010-12-31 | 2011-08-31 | 上海发电设备成套设计研究院 | Method of hanging weight calibration and error automatic correction for increasing metering precision of electric weighing coal feeder |
| CN102175298A (en) * | 2011-01-26 | 2011-09-07 | 清华大学 | Automatic calibration method and device for belt scale |
| CN102175298B (en) * | 2011-01-26 | 2013-01-16 | 清华大学 | Automatic calibration method and device for belt scale |
| CN103376153A (en) * | 2012-04-25 | 2013-10-30 | 软控股份有限公司 | Material verifying and weighing method and device |
| CN103376153B (en) * | 2012-04-25 | 2016-01-20 | 软控股份有限公司 | Material checks weighing technique and device thereof |
| CN103148924A (en) * | 2013-03-01 | 2013-06-12 | 云南昆船电子设备有限公司 | Device and method for automatically checking electronic belt scale |
| CN103148924B (en) * | 2013-03-01 | 2015-02-18 | 云南昆船电子设备有限公司 | Device and method for automatically checking electronic belt scale |
| CN106276155A (en) * | 2016-07-27 | 2017-01-04 | 赛摩电气股份有限公司 | A kind of Gravimetric Coal Feeders device and calibration steps thereof |
| CN106276155B (en) * | 2016-07-27 | 2018-08-07 | 赛摩电气股份有限公司 | A kind of Gravimetric Coal Feeders device and its calibration method |
| CN112113651A (en) * | 2019-06-22 | 2020-12-22 | 上海梅山钢铁股份有限公司 | Belt weigher calibrating device |
| CN111537045A (en) * | 2020-05-07 | 2020-08-14 | 江苏远邦工业科技有限公司 | High-precision belt scale intelligent instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |