CN202048964U - Tilt angle compensation arrangement of belt scale - Google Patents
Tilt angle compensation arrangement of belt scale Download PDFInfo
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- CN202048964U CN202048964U CN2010206865286U CN201020686528U CN202048964U CN 202048964 U CN202048964 U CN 202048964U CN 2010206865286 U CN2010206865286 U CN 2010206865286U CN 201020686528 U CN201020686528 U CN 201020686528U CN 202048964 U CN202048964 U CN 202048964U
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- belt conveyer
- calibrating
- conveyer scale
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Abstract
The utility model relates to a tilt angle compensation arrangement of a belt scale, which is designed applying a principle different from the inclination detection and compensation principle of the widely known technology. The measurement error of an angle value and the calculation error caused thereof are avoided, the weighing accuracy when the inclination angle of a belt scale is changed is obviously enhanced, and good practical effect is obtained. The tilt angle compensation arrangement of a belt scale mainly comprises a calibrating weight with fixed weight, a calibrating weight seat, a calibrating weight lifting mechanism, a weighing sensor for calibrating, and a pedestal. The tilt angle compensation arrangement of a belt scale is characterized in that a base plate thereof is fixed on the longitudinal beam of the frame of the conveyer of the belt scale with the inclination angle adjustable, the bearing surface of the weighing sensor for calibrating is arranged on the base plate, the calibrating weight seat is arranged on the surface to be loaded of the weighing sensor for calibrating, the calibrating weight lifting mechanism is arranged on the base plate, the calibrating weight is separated from or disposed on the calibrating weight seat when the calibrating weight lifting mechanism is lifted or falls down, the weighing sensor for calibrating is unloaded or loaded with the calibrating weight, and any member of the apparatus is always separated from the conveyer belt of the belt scale without contact.
Description
Technical field
The utility model relates to a kind of pour angle compensation device of novelty, especially a kind of pour angle compensation device that is applicable to the variable incidence belt conveyer scale.
Background technology
Belt conveyer scale is the measurement instrument that is used for measuring sometime the bulk material cumulative weight of being transported by its conveying belt in the section.From the weighing principle of belted electronic balance as can be known, two parameters of conveying belt displacement of material load value and displacement sensor are relevant on the carrier measured with LOAD CELLS of metering result.
The bottom of the LOAD CELLS on the belt conveyer scale carrier is usually by the stringer supporting of conveyor, makes it to produce effective strain with the power of LOAD CELLS quadrature.When the conveyor level was installed, the gravity W of material acted on LOAD CELLS straight down fully; When there were inclination alpha in the longeron of conveyor and surface level, material then was the component Wcos α of gravity for the acting force of LOAD CELLS.For example, during α=18 °, cos α=0.951, Wcos α and W differ 4.9%, and big like this error generally is not received.But if the inclination alpha of band conveyor is fixed, then cos α is a constant, can compensate its influence by demarcating.Yet in some occasion, the inclination alpha of belt conveyer scale conveyor is not fixed.For example, " stacker-reclaimer " often needs to adapt to the height and the far and near position of different discharging points (or getting the material point), therefore the frame of the belt of stacker-reclaimer conveying not only can left and rightly be rotated, simultaneously can also bow, face upward the change inclination angle, but if will carry out material test calibration continually immediately after changing the inclination angle each time obviously is worthless, because the material test needs the cost great amount of manpower and material resources usually.So, the variable incidence belt conveyer scale is except the LOAD CELLS and conveying belt displacement transducer that need the fixed angle belt conveyer scale and possess, also need to increase the device of the 3rd parameter of configuration-aware inclination effect, thereby can the output valve of LOAD CELLS be compensated.
By literature search, recognize that present known variable incidence belt conveyer scale all adopts obliquity sensor to realize above-mentioned compensating action." belted electronic balance " (Fang Yuanbai: Beijing, metallurgical industry publishing house, 2007) introduced two kinds of obliquity sensors: reluctance force type obliquity sensor and acceleration of gravity type obliquity sensor.In addition, adopt selsyn as obliquity sensor in addition.The something in common of the obliquity sensor of these kinds is: measure the inclination alpha of belt conveyer scale conveyor longeron earlier, the size according to survey α calculates cos α value in weighing instrument then, compensates in order to the output valve to LOAD CELLS.Yet because cosine function is a kind of nonlinear function, and belt conveyer scale frame inclination alpha near the low-angle of normal appearance the change value of cos α very little (when for example α changes to 1 ° by 0 °, the relative variation of cos α only 0.015%), and when inclination alpha is big, small angle variation can cause that the variation greatly of cos α is (when for example α changes to 18 ° by 17 °, the relative variation of cos α reaches 0.55%), therefore resolving power is inhomogeneous, error is also bigger, and the accuracy after the compensation is difficult to reach the requirement of expectation.
Summary of the invention
In order to solve the problems of the technologies described above, the described belt conveyer scale pour angle compensation of the utility model application device is by " weight rate method " principle design manufacturing, and is totally different in known prior art.This compensation system also can be considered: " a coding unit " that contains LOAD CELLS equally that is provided with separately outside the existing weighing unit of belt conveyer scale (comprising carrier and LOAD CELLS).The carrying plane of the LOAD CELLS of this unit and the LOAD CELLS of weighing unit bottom all directly or indirectly is installed on the longeron of belt conveyer scale conveyor frame.The load of the LOAD CELLS of weighing unit mainly is the weight of material on the conveying belt, weighing carrier roller contacts with conveying belt, roller rack transfers loads on the LOAD CELLS, and the member of " coding unit " contactless conveying belt, the demarcation of the fixed weight that this unit contained is passed through the coding seat to corresponding LOAD CELLS imposed load with counterweight (abbreviation coding), and weight of material is then inoperative to this LOAD CELLS.
The LOAD CELLS of " coding unit " is installed the bottom surface to be adjusted to such an extent that with the LOAD CELLS of belt balance weighing unit bottom surface coplane or parallel (when more than one group of the weighing unit of belt conveyer scale is installed, the coding unit should all be adjusted consistently with each weighing unit), make the LOAD CELLS of coding unit and weighing unit when the longeron of belt conveyer scale conveyor frame is done luffing, their inclination angle synchronous change also is consistent.
At first horizontal level is adjusted at the inclination angle of belt conveyer scale frame longeron, the coding that will have fixed weight lands on the coding seat, the output valve G when measuring LOAD CELLS loading coding
m(with respect to non-horizontal level, the coding weight that record this moment should be maximal value), and at this moment the weighing unit of belt conveyer scale is calibrated; Detecting G
mOr front or rear and belt conveyer scale when being in same position, in time start the coding lift and make coding lift away from the coding seat, measure LOAD CELLS output at zero point, storage is worth G zero point
0Thereby can try to achieve the clean output valve Δ G=G when loading coding
m-G
0
After α is changed at belt conveyer scale frame of conveyer inclination angle, start the coding lift once more, the LOAD CELLS of copying above-mentioned steps to measure under this inclination angle is worth G zero point at zero point
α 0, output valve G when loading coding
α mWith clean output valve Δ G
αSo have: cos α=Δ G
α/ Δ G.
Adopt the above-mentioned cos α value that obtains without measuring concrete inclination alpha just can revise the influence of weighing results because of the inclination angle changes, if the weight of material that this moment, weighing unit recorded is W to belt conveyer scale
α, the heavy W=W of then actual material
α(Δ G/ Δ G
α).
The architectural feature of the belt conveyer scale of the pour angle compensation device of employing " weight rate method " is:
(1) mainly contains LOAD CELLS, coding seat and coding; The carrying plane of described LOAD CELLS is installed on by connecting elements on the longeron of belt conveyer scale conveyor frame, and the coding seat is installed on being subjected on the section of LOAD CELLS, and coding places on the coding seat.
(2) in order in time to eliminate the influence of LOAD CELLS zero point drift, reduce compensating error, " coding unit " can be provided with the coding lift in addition, and coding lands on the coding seat during weighing coding, and coding was mentioned and broken away from the coding seat when school was zero.
(3) LOAD CELLS of " coding unit " is connected with the designated lane of weighing instrument by the input and output lead-in wire; It is similar that weighing instrument and ordinary straps scale are adopted, and has that signal amplification, analog to digital conversion and data are deposited, a function such as storage and computing.
In sum, belt conveyer scale pour angle compensation device described in the utility model, its basic composition comprises: coding 1, coding seat 2, coding lift 3, demarcation LOAD CELLS 4, base 5 with fixed weight; It is characterized in that: the base 5 of described belt conveyer scale pour angle compensation device is fixed on the conveyor frame longeron of variable incidence belt conveyer scale, the carrying plane of demarcating with LOAD CELLS 4 is installed on the base 5, coding seat 2 is installed on demarcates being subjected on the section with LOAD CELLS 4, coding lift 3 is installed on the base 5, coding 1 breaks away from or is positioned on the coding seat 2 when the lifting of coding lift, demarcate the load that promptly unloads or load coding 1 with LOAD CELLS 4, any part of this device breaks away from all the time mutually with the conveying belt of belt conveyer scale and does not contact.
Find out that easily the present invention has following remarkable advantage:
1) coding unit and weighing unit can be installed on very approaching position as required, and fine compensation weighing unit angle changes the variation of weighing that causes to greatest extent.
2) the coding unit can adopt identical sensor and mounting means roughly the same with weighing unit, thereby makes the actual conditions after the weighing unit angle changes obtain accurate emulation, has avoided the issuable error of other measurement of angle mode.
3) the inclination ratio is weighed and has been avoided the measuring error of angle value and the error of calculation that causes thus, has significantly improved detection and computational accuracy.
4) Installation and Debugging are very convenient, the dependability height.
The pour angle compensation device that patent application people makes by " weight rate method " principle design, be successfully applied to the variable incidence belt conveyer scale, the employed diffusing shape stockpile reclaimer of some harbours is transformed, thereby improved the accuracy of measuring, obtained good actual effect.
Description of drawings
Fig. 1 is the outside drawing of a kind of belt conveyer scale pour angle compensation device embodiment.
Fig. 2 is an outside drawing of having removed the belt conveyer scale pour angle compensation device of last cover.
Fig. 3 is the front elevation of belt conveyer scale pour angle compensation device.
Fig. 4 is the vertical view of belt conveyer scale pour angle compensation device.
Fig. 5, Fig. 6, Fig. 7 are the left views of belt conveyer scale pour angle compensation device; Wherein: Fig. 5 represents that coding holder fork is horizontal, and Fig. 6 represents to hold in the palm fork to be in the position that breaks away from coding, and Fig. 7 represents to hold in the palm fork to be in the position that holds up coding.
Fig. 8 is a belt conveyer scale pour angle compensation apparatus main body part explosive view.
Among the figure: 1: coding, 1-1 inner groovy, the outer groove of 1-2; 2: coding seat, 2-1 fork-shaped carriage; 3: coding lift, 3-1 shift fork, 3-2 declutch shift shaft, 3-3 shift fork actuating arm, 3-4 eccentric wheel, 3-5 motor-deceleration unit; 4: LOAD CELLS, 4-1 LOAD CELLS base plate; 5: base, 5-1 supporting leg, 5-2 securing member; 6: cover, 6-1 sensor terminal box.
Embodiment
Below in conjunction with description of drawings preferred embodiment of the present utility model.
The coding of the utility model embodiment is the cylindrical metal rod, but the utility model do not limited its shape, as long as can be maintained fixed weight; Two of cylindrical rod coding 1 along circumference respectively have two the circle grooves---inner groovy 1-1 and outside groove 1-2, a pair of fork-shaped carriage of its inner groovy and following coding seat matches, a pair of shift fork of outer groove and following coding lift matches.
The section (top) that is subjected to of the LOAD CELLS 4 of coding unit is equipped with coding seat 2, and respectively there is the fork-shaped carriage 2-1 of a supporting coding at coding seat two ends, and their spacing equates that with two inner groovy spacings of coding the fork-shaped carriage was stuck in the inner groovy when coding fell; The carrying plane of LOAD CELLS 4 (following) is installed on the base plate 4-1, and base plate is installed on the base 5.
The coding lift of present embodiment adopts eccentric wheel-shift fork form, and described coding lift is made up of shift fork 3-1, declutch shift shaft 3-2, shift fork actuating arm 3-3, eccentric wheel 3-4, motor-deceleration unit 3-5; But the utility model is not limited its form, as long as can make the coding lifting, as bent axle type, lifting jack type or the like.Embodiment coding lift is provided with two shift fork 3-1, their spacing equates with two outer flute pitch of coding, shift fork was stuck in the outer groove when coding rose, there is declutch shift shaft 3-2 to link to each other between two shift forks, declutch shift shaft is positioned at a side of demarcating with LOAD CELLS 4 and coding seat 2, hinged on base 5, declutch shift shaft is provided with a pair of shift fork and shift fork actuating arm, one of declutch shift shaft to drive unit---and motor-reductor prescription is to extension, and shift fork actuating arm 3-3 is housed, the overhanging end of shift fork actuating arm has the waist circular port, one of eccentric wheel 3-4 is stretched into this hole, both formation movingly, the other end links to each other with the output shaft of motor-deceleration unit 3-5, motor-deceleration unit is installed on the base 5.
A supporting leg 5-1 is respectively welded at two of base 5, two supporting legs are installed on respectively on the left and right sides longeron of belt conveyer scale conveyor frame, and by securing member 5-2 connection, the securing member of present embodiment is for adjusting bolt, to make things convenient for the depth of parallelism adjustment of coding unit and weighing unit.
Base is provided with case 6, and cover is provided with sensor terminal box 6-1.
Claims (4)
1. belt conveyer scale pour angle compensation device, its basic composition comprises: have fixed weight coding (1), coding seat (2), coding lift (3), demarcate with LOAD CELLS (4), base (5); It is characterized in that: the base (5) of described belt conveyer scale pour angle compensation device is fixed on the conveyor frame longeron of variable incidence belt conveyer scale, the carrying plane of demarcating with LOAD CELLS (4) is installed on the base (5), coding seat (2) is installed on demarcates being subjected on the section with LOAD CELLS (4), coding lift (3) is installed on the base (5), coding (1) breaks away from or is positioned on the coding seat (2) when the lifting of coding lift, demarcate the load that promptly unloads or load coding (1) with LOAD CELLS (4), any part of this device breaks away from all the time mutually with the conveying belt of belt conveyer scale and does not contact.
2. according to the described belt conveyer scale pour angle compensation of claim 1 device, it is characterized in that: described coding is cylindric metal bar, two ends respectively are provided with two circle grooves along circumference, wherein inboard a pair of groove one inner groovy (1-1) matches with a pair of fork-shaped carriage of coding seat, and a pair of groove in the outside-outer groove (1-2) matches with a pair of shift fork of coding lift.
3. according to claim 1 or 2 described belt conveyer scale pour angle compensation devices, it is characterized in that: the two ends of described coding seat have the fork-shaped carriage (2-1) of supporting coding.
4. according to claim 1 or 2 described belt conveyer scale pour angle compensation devices, it is characterized in that: described coding lift is made up of shift fork (3-1), declutch shift shaft (3-2), shift fork actuating arm (3-3), eccentric wheel (3-4), motor-deceleration unit (3-5); Declutch shift shaft is positioned at a side of demarcating with LOAD CELLS (4) and coding seat (2), hinged on base (5), declutch shift shaft is provided with a pair of shift fork and shift fork actuating arm, the overhanging end of actuating arm is provided with the waist circular port, eccentric one is stretched into this hole, both formation movingly, eccentric wheel links to each other with speed reducer output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206865286U CN202048964U (en) | 2010-12-29 | 2010-12-29 | Tilt angle compensation arrangement of belt scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206865286U CN202048964U (en) | 2010-12-29 | 2010-12-29 | Tilt angle compensation arrangement of belt scale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202048964U true CN202048964U (en) | 2011-11-23 |
Family
ID=44989270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206865286U Expired - Lifetime CN202048964U (en) | 2010-12-29 | 2010-12-29 | Tilt angle compensation arrangement of belt scale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202048964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103006A (en) * | 2010-11-29 | 2011-06-22 | 南京三埃工控股份有限公司 | Variable inclination angle rack conveyor belt scale and weighing method |
| CN102564538A (en) * | 2010-12-29 | 2012-07-11 | 南京三埃工控股份有限公司 | Weight ratio type inclination angle compensation method and belt weigher inclination angle compensator |
| CN107091677A (en) * | 2017-04-03 | 2017-08-25 | 河南理工大学 | A kind of error compensating method and the belt conveyer scale based on error compensation |
-
2010
- 2010-12-29 CN CN2010206865286U patent/CN202048964U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103006A (en) * | 2010-11-29 | 2011-06-22 | 南京三埃工控股份有限公司 | Variable inclination angle rack conveyor belt scale and weighing method |
| WO2012071787A1 (en) * | 2010-11-29 | 2012-06-07 | 南京三埃工控股份有限公司 | Conveyor belt scale provided with variable inclination angle frame |
| CN102103006B (en) * | 2010-11-29 | 2012-10-10 | 南京三埃工控股份有限公司 | Variable inclination angle rack conveyor belt scale and weighing method |
| CN102564538A (en) * | 2010-12-29 | 2012-07-11 | 南京三埃工控股份有限公司 | Weight ratio type inclination angle compensation method and belt weigher inclination angle compensator |
| CN102564538B (en) * | 2010-12-29 | 2013-11-06 | 南京三埃工控股份有限公司 | Weight ratio type inclination angle compensation method and belt weigher inclination angle compensator |
| CN107091677A (en) * | 2017-04-03 | 2017-08-25 | 河南理工大学 | A kind of error compensating method and the belt conveyer scale based on error compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111123 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |