CN204101146U - A kind of high-precision electronic belt scale - Google Patents
A kind of high-precision electronic belt scale Download PDFInfo
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- CN204101146U CN204101146U CN201420525037.1U CN201420525037U CN204101146U CN 204101146 U CN204101146 U CN 204101146U CN 201420525037 U CN201420525037 U CN 201420525037U CN 204101146 U CN204101146 U CN 204101146U
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Abstract
The utility model relates to a kind of high-precision electronic belt scale, particularly a kind of constant feeder.A kind of high-precision electronic belt scale, it is characterized in that described main body frame being fixed with rectangular weigher frame, LOAD CELLS one end is connected with the screw mandrel that weigher frame is arranged, other end bolt and main body frame are fixed, and are provided with one piece of installation cushion block consistent with main body frame gradient between LOAD CELLS with main body frame; Described weigher frame is welded by six pieces of band irons, and wherein vertical with metering carrying roller direction both sides are welded by inside and outside two pieces of band irons, and along offering draw-in groove on interior band iron, metering carrying roller two ends engage with corresponding draw-in groove respectively and fix with bolt.The utility model solves the not high problem of common constant feeder measuring accuracy, and measuring accuracy can reach 0.1 grade, and simultaneously in order to the weigher frame material improved set by measuring accuracy is light, structure is not easy dust stratification, is conducive to long-term tare weight stability.
Description
Technical field
The utility model relates to a kind of high-precision electronic belt scale, particularly a kind of constant feeder.
Background technology
In general, the precision of belted electronic balance is not very high, is mainly used in Internal Gauge and controls.Along with the introduction of foreign technology, the belt conveyer scale manufacturer of many specialties can produce high-precision electronic belt scale.High-precision electronic belt scale, is generally controlled Displaying Meter etc. formed by scale frame, tachogenerator, high precision load cell, belt balance with high precision, can carry out continuous dynamic measurement to solid material.
Belted electronic balance is broadly divided into through type belt conveyer scale and constant feeder two type, and the former is applicable to trade settlement, and the latter is mainly for the control of technique, plays the effect increasing product percent of pass.These two kinds of belted electronic balances are because the difference of effect, so Belt Length is widely different, structure is not identical yet.
Through type belt balance weighing crane span structure is installed in conveying frame, and when material is through out-of-date, metering carrying roller detects that the weight of material on belt feeder passes through metering carrying roller, stressed in LOAD CELLS, produces the voltage signal that is proportional to belt load.Speed pickup is directly connected on follower rollers, provides a series of pulse, and each pulse represents a belt movement unit, and the frequency of pulse is proportional to belt speed.Weighing instrument, from LOAD CELLS and speed pickup Received signal strength, draws an instantaneous delivery value and accumulating weight value by integral operation, and shows respectively.
All disclose above by formula belted electronic balance in Chinese patent CN201508226U, CN201548298U.
Chinese patent CN201508226U discloses following technology contents, " a kind of scale frame for electronic belt scale, it is characterized in that: it comprises roller rack, two sensor stands be fixed in conveyor frame are arranged with below roller rack, two sensor stands are respectively equipped with cantilevered sensor and cover sensor passport on a sensor, sensor cantilever one end is hinged with the supporting mass be supported on bottom roller rack, the bottom of supporting mass is provided with the limit body be connected with sensor stand, the bottom of sensor stand is provided with the caging bolt through contacting with sensor cantilever end bottom it ".
Chinese patent CN201548298U discloses following technology contents, " belted electronic balance, is made up of main drive roller, strainer, carrying roller, belt, it is characterized in that: claiming the bottom of body support frame with LOAD CELLS ".
Though above-mentioned two prior aries disclose the technology contents of passing type electronic belt conveyer scale, but its structure is different from constant feeder.Particularly belted electronic balance disclosed in Chinese patent CN201548298U, its structure is too simple, easily occurs that belt conveyer scale is short for serviceable life, cannot the technical matters of Measurement accuracy.
Chinese patent CN202729111U discloses following technology contents, " a kind of high-precision quantitative batcher, comprise the rack-mount annular material-conveying belt by driven roller and backing roll support rotating, driven roller is driven by rack-mount motor, support is also provided with the LOAD CELLS coordinated with material-conveying belt, it is characterized in that: support is installed with horizontal-extending and with the back up pad of LOAD CELLS by press fit, back up pad is provided with bracing frame, parallelly on bracing frame be provided with at least two and roll the roller of weighing coordinated with material-conveying belt upper strata ... it is characterized in that: the quantity of LOAD CELLS is two, lay respectively on the support of material-conveying belt both sides, the quantity of roller of weighing is three and is arranged between two LOAD CELLS by the bracing frame above LOAD CELLS ".
The technical matters that above-mentioned Chinese patent solves is " provide a kind of rational in infrastructure; measuring accuracy is high, and high-precision quantitative batcher with low cost ", but its precision can not meet the needs of existing activity in production, and structure is too simple, the serviceable life of machine is shorter.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of high-precision electronic belt scale, particularly a kind of constant feeder, which solve the problem that common constant feeder measuring accuracy is not high, measuring accuracy can reach 0.1 grade, simultaneously in order to the weigher frame material improved set by measuring accuracy is light, structure is not easy dust stratification, is conducive to long-term tare weight stability.
For a kind of high-precision electronic belt scale of the present utility model, above-mentioned technical matters is solved like this: this high-precision electronic belt scale, comprise main body frame, LOAD CELLS, tachogenerator and Displaying Meter, described Displaying Meter is connected with the terminal box be fixed on main body frame with wire, main body frame two ends are a hinged driving wheel and an engaged wheel respectively, central shaft one end of described tachogenerator and engaged wheel is affixed, it is characterized in that described main body frame being fixed with rectangular weigher frame, LOAD CELLS one end is connected with the screw mandrel that weigher frame is arranged, other end bolt and main body frame are fixed, and between LOAD CELLS with main body frame, be provided with one piece of installation cushion block consistent with main body frame gradient, described weigher frame is welded by six pieces of band irons, and wherein vertical with metering carrying roller direction both sides are welded by inside and outside two pieces of band irons, and along offering draw-in groove on interior band iron, metering carrying roller two ends engage with corresponding draw-in groove respectively and fix with bolt.
In above-mentioned a kind of high-precision electronic belt scale, each metering carrying roller that measured scale frame-saw is lived can by regulating the degree of tightness of its bolts at two ends to change the height of metering carrying roller, make each carrying roller be in same level stressed, thus realize material and smoothly pass effect between metering zone.Meanwhile, LOAD CELLS is connected with weigher frame by screw mandrel, in use, by the height regulating screw mandrel to change weigher frame.And the installation cushion block arranged between LOAD CELLS and main body frame, be in order to avoid when regulating weigher frame height, LOAD CELLS and main body frame withstand the adverse consequences be damaged.Screw mandrel coordinates adjust with the bolt at metering carrying roller two ends, can allow measure carrying roller and be in the position that is more conducive to precision, accomplishes stressed more even.
Weigher frame uses band iron, and not only material is light and handy, and because the thickness of band iron is less, whole weigher frame takes up space few, is also not easy dust stratification.
Further optimally, the hinged place of described driving wheel, engaged wheel and main body frame is equipped with self-aligning bearing, and endless-belt is sheathed on driving wheel and engaged wheel outer, and is close to carrying roller and metering carrying roller that weighing framework is arranged; Described engaged wheel is provided with engaged wheel regulating device.
The self-aligning bearing that driving wheel and engaged wheel adopt can realize belt conveyer scale install and adjust technique effect easily, and engaged wheel regulating device not only can adjust belt, make it can not sideslip, and can tensioning or loosen belt, while the height by adjustment weigher frame and metering carrying roller improves belted electronic balance precision, affect the precision of belted electronic balance further by the degree of tightness of belt.
More optimally, described weigher frame is at least respectively equipped with screw mandrel at the two ends of two pieces of outer band irons, and namely the number of LOAD CELLS is at least four.
One section of buffer zone is provided with between described weigher frame and driving wheel end.Material drops after on constant feeder needs a buffer area, enables material be attached on belt along with belt is stably by metering region, is unlikely to roll everywhere
The number of described metering carrying roller is no less than four.
The two ends that traditional constant feeder metering method is at most single metering carrying roller coordinate two LOAD CELLS, make data measured in such a way accurate not.In order to make constant feeder measuring accuracy higher, by repeatedly practising, drawn by arranging a weigher frame on main body frame, and in weigher frame, setting is no less than four metering carrying rollers, forms the method between a metering zone.In order to realize this metering method, researchist is determined by experiment and on the corner of weigher frame, must arranges LOAD CELLS respectively, could pass through after between this metering zone like this, obtain the data that a precision is very high at material.In production practices, according to different needs, the quantity of metering carrying roller and LOAD CELLS can be increased.
More optimally, described installation cushion block is elastic component.This satisfies when reconciling the height of weigher frame, main body frame and LOAD CELLS and installation cushion block can fully be fitted.
Described main body frame is provided with gravity from tensioning system, automatic deviation-correcting device for belt and pyriform scraper plate.
Described tachogenerator is high-resolution digital type pulse tachogenerator.
To sum up, a kind of high-precision electronic belt scale involved by the utility model, in order to realize the high object of measuring accuracy, is provided with a weigher frame, and the height by regulating the screw mandrel on weigher frame to change weigher frame.Meanwhile, each metering carrying roller by regulating the degree of tightness of its bolts at two ends to change the height of metering carrying roller, can allow metering carrying roller be in the position that is more conducive to precision, reaching stressed more even, more stable effect when material passes through.Also fully taking into account the selection of weigher frame material when designing, making it not only light, and not easily dust stratification, area occupied are little.More perfectly, by the degree of tightness of adjustment belt, the precision of belted electronic balance can be improved further.The corner of weigher frame arranges LOAD CELLS respectively, and can pass through after between this metering zone at material, obtain the data that a precision is very high, measuring accuracy is better than general constant feeder greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of the utility model weigher frame part.
Fig. 3 is the vertical view after the utility model removes endless-belt.
Fig. 4 is the partial enlarged drawing of weigher frame part after the utility model removal endless-belt.
Wherein, in Fig. 1, main body frame 1, driving wheel 2, engaged wheel 3, weigher frame 4, interior band iron 41, outer band iron 42, draw-in groove 43, metering carrying roller 51, carrying roller 52, screw mandrel 6, LOAD CELLS 7, installs cushion block 8, endless-belt 9, engaged wheel regulating device 10.
Embodiment
Fig. 1 is structural representation of the present utility model, this high-precision electronic belt scale, comprise main body frame 1, LOAD CELLS 7, tachogenerator and Displaying Meter, described Displaying Meter is connected with the terminal box be fixed on main body frame 1 with wire, main body frame 1 two ends are hinged driving wheel 2 and an engaged wheel 3 respectively, and central shaft one end of described tachogenerator and engaged wheel 3 is affixed.
In driving wheel 2, engaged wheel 3 and the hinged place of main body frame 1, be equipped with self-aligning bearing, belt conveyer scale install and adjust technique effect easily can be realized.Endless-belt 9 is sheathed on driving wheel 2 and engaged wheel 3 outer, and is close to carrying roller 52 and metering carrying roller 51 that weighing framework is arranged, and engaged wheel 3 is provided with engaged wheel regulating device 10.Engaged wheel regulating device can adjust belt, makes it can not sideslip, and can tensioning or loosen belt, because the degree of tightness of belt can affect the precision of belted electronic balance.
One section of buffer zone is provided with between described weigher frame 4 and driving wheel 2 end.Such setting is because material drops after on constant feeder and needs a buffer area, enables material be attached on belt along with belt is stably by metering region, is unlikely to roll everywhere; If be arranged on by metering region near engaged wheel end, buffer area then can be long, causes the waste in space, the length of whole constant feeder also can be made to strengthen simultaneously, increases cost.
Described main body frame 1 is provided with gravity from tensioning system, automatic deviation-correcting device for belt and pyriform scraper plate.
Described tachogenerator is high-resolution digital type pulse tachogenerator.
Fig. 2 is the partial enlarged drawing of the utility model weigher frame part, described main body frame 1 is fixed with rectangular weigher frame 4, LOAD CELLS 7 one end is connected with the screw mandrel 6 that weigher frame 4 is arranged, in use, by the height regulating screw mandrel 6 to change weigher frame 4, coordinate with the bolt at metering carrying roller 51 two ends and adjust, metering carrying roller 51 can be allowed to be in the position that is more conducive to precision, accomplish stressed more even; Other end bolt and main body frame 1 are fixed, and are provided with one piece of installation cushion block 8 consistent with main body frame 1 gradient between LOAD CELLS 7 with main body frame 1, and this installation cushion block 8 is elastic component.Install cushion block 8 to avoid when regulating weigher frame height, LOAD CELLS and main body frame withstand the adverse consequences be damaged.
Embodiment one, described weigher frame 4 is respectively equipped with screw mandrel 6 at the two ends of two pieces of outer band irons 42, and namely the number of LOAD CELLS 7 is four, and be provided with four metering carrying rollers 51 between weigher frame 4, the spacing of each metering carrying roller 51 is 200mm.This situation is for realizing goal of the invention of the present utility model, and LOAD CELLS and metering carrying roller number are minimum situation, can meet the request for utilization of user.The spacing 200mm of metering carrying roller is the most suitable value obtained after many experiments, now whole constant feeder moderate length, and runs the most steady.
Embodiment two, described weigher frame 4 is respectively equipped with screw mandrel 6 at the two ends of two pieces of outer band irons 42, is respectively equipped with screw mandrel 6 at the middle part of two pieces of outer band irons 42, and namely the number of LOAD CELLS 7 is six, is provided with four metering carrying rollers 51 between weigher frame 4.This situation is realizing goal of the invention of the present utility model simultaneously, in order to reach higher measuring accuracy, or a certain LOAD CELLS suddenly malfunctioning, measure the emergency case such as numerical value is inaccurate under, ensure that whole constant feeder successfully continues situation about running.
Embodiment three, described weigher frame 4 is respectively equipped with screw mandrel 6 at the two ends of two pieces of outer band irons 42, and namely the number of LOAD CELLS 7 is four, is provided with six metering carrying rollers 51 between weigher frame 4.This situation is realizing goal of the invention of the present utility model simultaneously, lengthening between metering zone, measure the situation of more materials.
Composition graphs 3 and Fig. 4, visible described weigher frame 4 is welded by six pieces of band irons, the both sides that wherein direction is vertical with metering carrying roller 51 are welded by inside and outside two pieces of band irons, band iron not only material is light and handy, and because the thickness of band iron is less, whole weigher frame takes up space few, is also not easy dust stratification.In the utility model, find after experiment, band iron selects thickness to be 8-10mm, and with width than being the better of 1:5-1:6.If thickness is less than 8mm, weigher frame is because of too thin, and serviceable life is shorter; If thickness is greater than 10mm, the structure of weigher frame will be too thick and heavy, and easy dust stratification.If band iron thickness is greater than 1:5 with width ratio, metering carrying roller is understood built on the sand with the engaging of interior band iron, and the position of metering carrying roller can, lower than other carrying rollers, cause belt can not be positioned in same level; If band iron thickness is less than 1:6 with width ratio, the height of weigher frame can be too high, causes metering segment part belt position too high.
Along offering draw-in groove 43 on interior band iron 41, metering carrying roller 51 two ends engage with corresponding draw-in groove respectively and fix with bolt.Each metering carrying roller 51 can change its height by regulating the degree of tightness of its bolts at two ends, makes each carrying roller be in same level stressed, thus realizes material and smoothly pass effect between metering zone.
By describing the structure of high-precision electronic belt scale of the present utility model above; described those skilled in the art should be appreciated that; the utility model is not limited to above-mentioned embodiment, basis of the present utility model adopts the improvement of techniques well known and substitutes all to drop among protection domain of the present utility model.
Claims (8)
1. a high-precision electronic belt scale, comprise main body frame, LOAD CELLS, tachogenerator and Displaying Meter, described Displaying Meter is connected with the terminal box be fixed on main body frame with wire, main body frame two ends are a hinged driving wheel and an engaged wheel respectively, central shaft one end of described tachogenerator and engaged wheel is affixed, it is characterized in that described main body frame being fixed with rectangular weigher frame, LOAD CELLS one end is connected with the screw mandrel that weigher frame is arranged, other end bolt and main body frame are fixed, and between LOAD CELLS with main body frame, be provided with one piece of installation cushion block consistent with main body frame gradient, described weigher frame is welded by six pieces of band irons, and wherein vertical with metering carrying roller direction both sides are welded by inside and outside two pieces of band irons, and along offering draw-in groove on interior band iron, metering carrying roller two ends engage with corresponding draw-in groove respectively and fix with bolt.
2. a kind of high-precision electronic belt scale according to claim 1, it is characterized in that the hinged place of described driving wheel, engaged wheel and main body frame is equipped with self-aligning bearing, endless-belt is sheathed on driving wheel and engaged wheel outer, and is close to carrying roller and metering carrying roller that weighing framework is arranged; Described engaged wheel is provided with engaged wheel regulating device.
3. a kind of high-precision electronic belt scale according to claim 1, it is characterized in that described weigher frame is at least respectively equipped with screw mandrel at the two ends of two pieces of outer band irons, namely the number of LOAD CELLS is at least four.
4. a kind of high-precision electronic belt scale according to claim 1 or 3, is characterized in that being provided with one section of buffer zone between described weigher frame and driving wheel end.
5. a kind of high-precision electronic belt scale according to claim 1, is characterized in that the number of described metering carrying roller is no less than four.
6. a kind of high-precision electronic belt scale according to claim 1, is characterized in that described installation cushion block is elastic component.
7. a kind of high-precision electronic belt scale according to claim 1, is characterized in that described main body frame is provided with gravity from tensioning system, automatic deviation-correcting device for belt and pyriform scraper plate.
8. a kind of high-precision electronic belt scale according to claim 1, is characterized in that described tachogenerator is high-resolution digital type pulse tachogenerator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420525037.1U CN204101146U (en) | 2014-09-12 | 2014-09-12 | A kind of high-precision electronic belt scale |
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| CN201420525037.1U CN204101146U (en) | 2014-09-12 | 2014-09-12 | A kind of high-precision electronic belt scale |
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| CN204101146U true CN204101146U (en) | 2015-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236686A (en) * | 2014-09-12 | 2014-12-24 | 杭州中南电子工程有限公司 | High-precision electronic belt scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236686A (en) * | 2014-09-12 | 2014-12-24 | 杭州中南电子工程有限公司 | High-precision electronic belt scale |
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