CN203479458U - Fully-automatic electromagnetic balance-type small-force standard device - Google Patents
Fully-automatic electromagnetic balance-type small-force standard device Download PDFInfo
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- CN203479458U CN203479458U CN201320594807.3U CN201320594807U CN203479458U CN 203479458 U CN203479458 U CN 203479458U CN 201320594807 U CN201320594807 U CN 201320594807U CN 203479458 U CN203479458 U CN 203479458U
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Abstract
The utility model provides a fully-automatic electromagnetic balance-type small-force standard device and belongs to the field of mechanical metrology, so as to solve the problems of low work efficiency, complicated mechanical structure, inconvenient operation, narrow force range, slow loading speed and poor use performance in the prior art. The fully-automatic electromagnetic balance-type small-force standard device comprises an equal-arm balance, a weight loading mechanism, and an electromagnetic device, wherein the equal-arm balance comprises a balance crossbeam, a vertical column and a base, the balance crossbeam is contacted with the vertical column via a middle knife structure, and the vertical column is fixed on the base; the weight loading mechanism is connected to one end of the balance crossbeam of the equal-arm balance, the weight loading mechanism comprises a large weight loading mechanism, a middle weight loading mechanism and a small weight loading mechanism, and a single chip microcomputer respectively controls the large weight loading mechanism, the middle weight loading mechanism and the small weight loading mechanism for realizing automatic loading and unloading via a motor; and the electromagnetic device is connected at the other end of the balance crossbeam of the equal-arm balance, a reverse frame is connected to the lower end of the electromagnetic device, and the electromagnetic device applies the force on a sensor via the reverse frame.
Description
Technical field
The utility model belongs to mechanics metering field, is specifically related to a kind of Full-automatic electromagnetic type small force value standard apparatus.
Background technology
Force measurement is applied to various fields more widely, and in recent years, along with the fast development of nanometer technique, the small value force measurement technology of answering in contrast also obtained corresponding fast development.In these fields, all need micro-small value force to measure accurately, the product of guarantee processing can reach desired precision.In to the check of sensor, it is just even more important that the measurement of small value force seems, this needs it to have higher precision, guarantee sensor measurement accurately.
The power value standard set-up of at present conventional small-range is dead weight type safe mechanism, this mechanism power value narrow range, and usability is poor, and loading velocity is slower; In addition, also there is the Standard Machine of measuring by balance,electromagnetic transformation being realized to small value force in conventional small-range power value standard set-up at present, and still, load maintainer can not can not be realized automatic loading completely, and efficiency is low, and complicated in mechanical structure operates not easy.
Utility model content
The purpose of this utility model is to propose a kind of Full-automatic electromagnetic type small force value standard apparatus, solves that inefficiency, complicated in mechanical structure, operation that prior art exists are not easy, power value narrow range, loading velocity is slow and usability is poor problem.
For achieving the above object, Full-automatic electromagnetic type small force value standard apparatus of the present utility model comprises:
Equal-arm balance, described equal-arm balance comprises balance crossbeam, column and base, and described balance crossbeam contacts with described column by middle knife structure, and described column is fixed on described base;
Be connected to the counterweight load maintainer of balance crossbeam one end of equal-arm balance, described counterweight load maintainer comprises large counterweight load maintainer, middle counterweight load maintainer and miniweights load maintainer, and single-chip microcomputer is controlled respectively large counterweight load maintainer, middle counterweight load maintainer and miniweights load maintainer by motor and realized loading automatically and unloading;
The calutron that is connected to the balance crossbeam other end of equal-arm balance, described calutron lower end is connected with reverse frame, and described calutron acts on power value on sensor by reverse frame.
Described middle knife structure comprises that middle cutter, middle cutter box and middle cutter hold, described middle cutter is arranged on the centre of the balance crossbeam of described equal-arm balance, the sharp edge of described middle cutter stands on described middle cutter and holds, and described middle cutter holds with described middle cutter box and coordinates, and described middle cutter box is fixed on crossbeam.
Described balance crossbeam is symmetrical structure, described balance crossbeam two ends are respectively arranged with hanger, described counterweight load maintainer is fixed on and connects dull and stereotyped below, described connection is dull and stereotyped to be connected with the hanger of described balance crossbeam one end by hook, and described calutron is connected with the hanger of the described balance crossbeam other end by hook.
Described hanger comprises that bearing plate, crosshead, lug hook, hanger ring and counterweight bear sheet, described crosshead comprises crosshead fixed part and crosshead movable part, counterweight bears sheet and is held and be connected with cutter with bearing plate by crosshead fixed part, described crosshead movable part lower end is connected with described hanger ring, described hanger ring lower end is provided with lug hook, there are a taper hole, the location of realizing crosshead movable part in described bearing plate back.
Described counterweight load maintainer is fixed on and connects dull and stereotyped below and be specially: middle counterweight load maintainer is fixed on and connects dull and stereotyped center, and two large counterweight load maintainers and two miniweights load maintainers are symmetrically distributed in take on the circumference that middle counterweight load maintainer is the oval center of circle.
Described each large counterweight load maintainer loads five counterweights, each miniweights load maintainer loads five counterweights, middle counterweight load maintainer loads two counterweights, the power value of a counterweight in middle counterweight load maintainer is identical with the power value of the monolithic counterweight of large counterweight load maintainer, and the power value of another counterweight in middle counterweight load maintainer is identical with the power value of the monolithic counterweight of miniweights load maintainer.
Described large counterweight load maintainer comprises that large counterweight is hung, counterweight mechanism supports bar, counterweight support and large counterweight greatly, described large counterweight load maintainer is hung and is fixed on described connection flat board by described large counterweight, described large counterweight is hung inner horizontal direction and is evenly provided with a plurality of crossbeams, in the middle of described crossbeam, be processed with bellmouth, described large counterweight mechanism supports bar is through described bellmouth, on described large counterweight mechanism supports bar, between corresponding every adjacent two crossbeams, being fixed with described counterweight supports, the diameter that described counterweight supports is less than the minimum diameter of described bellmouth, described large counterweight is placed on respectively each counterweight and supports, distance between every adjacent two counterweights support increases progressively gradually or successively decreases gradually, minor increment between adjacent two counterweights support is greater than the distance between adjacent two crossbeams, guarantee to realize the load or unload in turn that large counterweight is hung at large counterweight when large counterweight mechanism supports bar moves up and down, described large counterweight mechanism supports bar lower end is fixedly connected with screw A, and described screw A and leading screw A form screw pair, and described leading screw A drives to realize by stepper motor and rotates, described large counterweight load maintainer, middle counterweight load maintainer are identical with miniweights load maintainer load mode.
Described power value standard set-up also comprises fixed flat planar and motor fixing plate, describedly comprise that fixed flat planar and motor fixing plate are fixed on the column of equal-arm balance, before and after described fixed flat planar and described calutron relative position place, be symmetrically arranged with four guideposts, before and after be provided with leading screw B between adjacent two guideposts, leading screw B and screw B form screw pair, oppositely frame crossbeam is connected with screw B, by the driven by motor leading screw B being fixed on motor fixing plate, rotate, realize moving up and down of reverse frame crossbeam.
The beneficial effects of the utility model are: Full-automatic electromagnetic type small force value standard apparatus of the present utility model combines balance,electromagnetic and small value force counterweight load maintainer, and carries out FEEDBACK CONTROL by single-chip microcomputer.Can complete the automatic loading and unloading of counterweight and the balance of balance is controlled automatically, having realized the electromechanical integration of device.By single-chip microcomputer, the stepper motor of balance crossbeam left end has been controlled the loading of counterweight, the calutron of the balance crossbeam other end can produce the large power such as counterweight that are loaded with left end, by reverse frame, again power is applied on tested sensor, whole process implementation robotization.
The hanger that the utility model adopts is compensation hanger, the bearing plate back of described hanger is provided with a taper hole, realize the location of crosshead, hanger ring upper frame can swing and make hanger swing in the taper hole of bearing plate, thereby plays the effect of force compensating.The advantage of this hanger is, when the loading direction bearing when it changes to some extent, can swing due to it, and exert all one's strength and can also be evenly distributed on blade, can not cause measuring error, can improve the stability of whole device;
The counterweight load maintainer of this device is symmetrical structure, two large counterweight load maintainers and two miniweights load maintainers are distributed in take on the circumference that middle counterweight load maintainer is the oval center of circle, when load or unload, balance crossbeam swing angle is little, and such structure can reach and load effect stably.
Accompanying drawing explanation
Fig. 1 is Full-automatic electromagnetic type small force value standard apparatus one-piece construction schematic diagram of the present utility model;
Fig. 2 is the counterweight load maintainer structural representation of Full-automatic electromagnetic type small force value standard apparatus of the present utility model;
Fig. 3 is the shackle structure schematic diagram of Full-automatic electromagnetic type small force value standard apparatus of the present utility model;
Wherein: 1, base, 2, motor fixing plate, 3, stepper motor, 4, flange-face coupling, 5, bearing (ball) cover, 6, fixed flat planar, 7, bearing, 8, bearing (ball) cover, 9, screw, 10, screw A, 11, leading screw A, 12, large counterweight load maintainer, 13, large counterweight is hung, 14, counterweight supports, 15, large counterweight mechanism supports bar, 16, studs, 17, middle counterweight load maintainer, 18, centre counterweight mechanism hangs, 19, connect dull and stereotyped, 20, hook, 21, limit cutter box, 22, hanger, 23, balance crossbeam, 24, miniweights load maintainer, 25, middle cutter box, 26, middle cutter, 27, middle cutter holds, 28, calutron, 29, reverse frame, 30, leading screw B, 31, guidepost, 32, reverse frame crossbeam, 33, screw B, 34, column, 35, lug hook, 36, hanger ring, 37, crosshead, 3701, crosshead fixed part, 3702, crosshead movable part, 38, bearing plate, 39, counterweight bears sheet, 40, cutter holds.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
The technical scheme that the utility model provides is based on lever principle, is mainly the load sensor below 1N is checked.First as requested the power value producing, calculates by single-chip microcomputer, selects the counterweight of corresponding mass with it, is then automatically loaded into counterweight and hangs.Opposite side, by calutron 28, produces equal with it electromagnetic force, and carries out by single-chip microcomputer the balance that real-time FEEDBACK CONTROL guarantees balance, makes the electromagnetic force of output accurate.This power is applied on sensor to be measured by reverse frame 29, completes measurement.Whole measuring process has realized robotization, simple to operate, and result is accurate.
In this device, the gravity that counterweight produces and the balance between electromagnetic force are to realize by the leverage of 1:1.Lever one end loads the counterweight of certain force value, and after Balance, the other end can obtain the power of identical power value.Wherein, the computing formula of power value is
In formula: F-power;
The quality of m-institute's loading counterweight;
The acceleration of gravity of g-locality;
The density of a-air;
The density of w-counterweight.
The assurance balance that balance crossbeam 23 should be tried one's best when not loading, balance crossbeam 23 one end are that five counterweights of counterweight load maintainer are hung, the other end is calutron 28 and reverse frame 29, makes their quality equate in design as far as possible.The difference of their quality can add by bearing at counterweight standard mass on sheet 39 makes up.
The method of top can only guarantee roughly balance of balance, and real leveling is in balance work, before counterweight loads, is adjusted the balance of crossbeam by single-chip computer control system.And then loading counterweight, after balance crossbeam 23 balances, check.
Referring to accompanying drawing 1, Full-automatic electromagnetic type small force value standard apparatus of the present utility model comprises:
Equal-arm balance, described equal-arm balance comprises balance crossbeam 23, column 34 and base 1, and described balance crossbeam 23 contacts with described column 34 by middle knife structure, and described column 34 is fixed on described base 1;
Be connected to the counterweight load maintainer of balance crossbeam 23 one end of equal-arm balance, described counterweight load maintainer comprises large counterweight load maintainer 12, middle counterweight load maintainer 17 and miniweights load maintainer 24, and single-chip microcomputer is controlled respectively large counterweight load maintainer 12, middle counterweight load maintainer 17 and miniweights load maintainer 24 by motor and realized loading automatically and unloading;
Be connected to the calutron 28 of balance crossbeam 23 other ends of equal-arm balance, described calutron 28 lower ends are connected with reverse frame 29, and described calutron 28 acts on power value on sensor by reverse frame 29.
Described balance crossbeam 23 is parts important in whole device, and the effect of its balance adjustment and load-carrying object is referred to as in " heart " of equal-arm balance.The making material of balance crossbeam 23 is that aldary or other good rigidity, quality are light, corrosion-resistant material, in order to alleviate the weight of crossbeam, heighten the sensitivity of balance, guaranteeing, under the prerequisite of beam strength, generally on crossbeam, to make various difform symmetrical holes.In this device, balance crossbeam 23 adopts aluminium bronze, and this material has good mechanical property and corrosion resistance, and physical property is also more satisfactory.And on balance crossbeam 23, make 5 symmetrical holes, reduce its quality and strengthen its sensitivity.
Described middle knife structure comprises that middle cutter 26, middle cutter box 25 and middle cutter hold 27, described middle cutter 26 is arranged on the centre of the balance crossbeam 23 of described equal-arm balance, the sharp edge of described middle cutter 26 stands on described middle cutter and holds on 27, described middle cutter holds 27 and coordinates with described middle cutter box 25, described middle cutter box 25 is fixed on crossbeam, and described middle cutter holds 27 tops that are fixed on column 34.
Described balance crossbeam 23 is symmetrical structure, described balance crossbeam 23 two ends are respectively arranged with hanger 22, hanger 22 is connected with balance crossbeam 23 by limit cutter box 21, described counterweight load maintainer is fixed on and connects dull and stereotyped 19 belows, described connection dull and stereotyped 19 is connected with the hanger 22 of described balance crossbeam 23 one end by hook 20, and described calutron 28 is connected with the hanger 22 of described balance crossbeam 23 other ends by hook 20.
Referring to accompanying drawing 3, described hanger 22 comprises that bearing plate 38, crosshead 37, lug hook 35, hanger ring 36 and counterweight bear sheet 39, described crosshead 37 comprises crosshead fixed part 3701 and crosshead movable part 3702, counterweight bears sheet 39 and by crosshead fixed part 3701, holds 40 with bearing plate 38 and cutter and be connected, described crosshead movable part 3702 lower ends are connected with described hanger ring 36, described hanger ring 36 lower ends are provided with lug hook 35, there are a taper hole, the location of realizing crosshead 37 in described bearing plate 38 back.
Referring to accompanying drawing 1 and accompanying drawing 2, described counterweight load maintainer is fixed on dull and stereotyped 19 belows of connection and is specially: counterweight is hung 13 and is connected to by studs 16 below that connects dull and stereotyped 19, middle counterweight load maintainer 17 is hung and is fixed on the center that connects dull and stereotyped 19 by middle counterweight load maintainer, and two large counterweight load maintainers 12 and two miniweights load maintainers 24 are symmetrically distributed in take on the circumference that middle counterweight load maintainer 17 is the oval center of circle.
Described large counterweight load maintainer 12 comprises that large counterweight hangs 13, large counterweight mechanism supports bar 15, counterweight support 14 and large counterweight, described large counterweight load maintainer 12 is hung 13 by described large counterweight and is fixed in described connection dull and stereotyped 19, described large counterweight is hung 13 inner horizontal directions and is evenly provided with a plurality of crossbeams, in the middle of described crossbeam, be processed with bellmouth, described large counterweight mechanism supports bar 15 is through described bellmouth, on described large counterweight mechanism supports bar 15, between corresponding every adjacent two crossbeams, be fixed with described counterweight and support 14, the diameter of described counterweight support 14 is less than the minimum diameter of described bellmouth, described large counterweight is placed on respectively each counterweight and supports on 14, the distance that every adjacent two counterweights support between 14 increases progressively gradually or successively decreases gradually, the minor increment that adjacent two counterweights support between 14 is greater than the distance between adjacent two crossbeams, guarantee to realize large counterweight and hang the load or unload in turn on 13 at large counterweight when large counterweight mechanism supports bar 15 moves up and down, described large counterweight mechanism supports bar 15 lower ends are fixedly connected with screw A10, and described screw A10 and leading screw A11 form screw pair, and described leading screw A11 drives to realize by stepper motor 3 and rotates, described large counterweight load maintainer 12, middle counterweight load maintainer 17 are identical with miniweights load maintainer 24 load modes, in the middle of described, counterweight load maintainer 17 loads two groups of counterweights, wherein the counterweight value of one group of counterweight is identical with the single counterweight value that large counterweight load maintainer 12 loads, and the counterweight value of another group counterweight is identical with the single counterweight value that miniweights load maintainer 24 loads.
Described power value standard set-up also comprises bearing (ball) cover 5, 8, fixed flat planar 6 and motor fixing plate 2, described bearing (ball) cover 5, 8 are connected with fixed flat planar 6 by screw 9, described fixed flat planar 6 and motor fixing plate 2 are fixed on the column 34 of equal-arm balance, described fixed flat planar 6 is symmetrically arranged with four guideposts 31 with described calutron 28 front and back, relative position places, before and after be provided with leading screw B30 between adjacent two guideposts 31, leading screw B30 and screw B33 form screw pair, oppositely frame crossbeam 32 is connected with screw B33, by the driven by motor leading screw B30 being fixed on motor fixing plate 2, rotate, realize moving up and down of reverse frame crossbeam 32.
In counterweight load maintainer, have 5 counterweight load maintainers, the large counterweight load maintainer 12 of 10g has 2 groups, every group of 5 10g counterweights.1g miniweights load maintainer 24 has 2 groups, every group of 5 1g counterweights.Middle counterweight load maintainer 17 has 1 group, and every group has 1 10g counterweight and a 1g counterweight.Large counterweight mechanism supports bar 15 in 2 large counterweight load maintainers 12 of 10g is connected with the screw A10 of the leading screw A11 that stepper motor 3 drives, realize upper and lower motion, counterweight is carried out to automatic loading and unloading, and 2 1g miniweights load maintainers 24 and a middle counterweight load maintainer 17 adopt same load mode.In the time of idle in mechanism, in 2 large counterweight load maintainers 12 of 10g, large counterweight is all in the counterweight support 14 of large counterweight mechanism supports bar 15, when loading, stepper motor 3 moves downward with large counterweight mechanism supports bar 15, and large counterweight is just stayed large counterweight and hung on 13.Each large counterweight is hung 13 the middle bellmouth that is processed into of crossbeam, when the large counterweight of large counterweight load maintainer 12 is loaded into large counterweight and hangs on 13, not only can stay top like this and can also play certralizing ability, and can make counterweight support 14 declines smoothly, large counterweight can successfully be held up in unloading, is unlikely to make the large counterweight can not be unloaded and cause the fault of whole device.Distance between large 15 two supports of counterweight mechanism supports bar is suitable, can not be too large, and can make so large counterweight mechanism supports bar 15 sizes long; But can not be too little, interference when can cause so large counterweight to load.Not, when counterweight bar declines, first support can be encountered second counterweight to distance, makes mechanism can not continue motion again, causes the failure of mechanism design.Because the size of large counterweight mechanism supports bar 15 integral body is larger, the principle of 2 definite straight lines, so it need to have the position limitation at two places.One is used for fixing, another be used for guiding effect.Can guarantee like this in the process of its motion, large counterweight mechanism supports bar 15 can deflection, can not exert an influence to the uninstall process of large counterweight.Due to the needs of structure, stepper motor 3 is vertically to place, and with motor retainer, is fixed on motor fixing plate 2.Therefore, the leading screw A11 being attached thereto by flange-face coupling 4 need to support with two angular contact ball bearings 7, bears axial force.Screw A10 is connected and is realized moving up and down of counterweight bar by brace with large counterweight mechanism supports bar 15, and range is 15mm.At this segment distance, complete the loading and unloading to counterweight.These 22 counterweights can form minimum force value 0.01N.Maximal force 1N, extreme difference is 0.01N, 100 grades of counterweight combinations.This just can load the wherein power of any numerical value.For example 0.15N, can load middle 11g, 2 each 2 1g counterweights of 1g counterweight load maintainer; 0.59N, the 11g in the middle of loading, 2 each 2 10g counterweights of 10g counterweight load maintainer, each 4 1g counterweights of 1g counterweight load maintainer.Although this can form the counterweight of any number, and when the numerical value of loading counterweight is greater than 10g, the combination of counterweight can be symmetrical, this just can not cause the inclination of whole load maintainer, does not affect the loading to counterweight, can not produce any impact to measuring, but when the counterweight numerical value loading is less than 10g and is odd number, be 1g, 3g, 5g, 7g, 9g, meeting is symmetrical because counterweight combination cannot realize, and makes the counterweight of the many 1g of 1g counterweight load maintainer above.Because the quality of package unit is far longer than 1g, the impact that this counterweight causes for whole load maintainer almost can be ignored, but by the compensating action of bait, this small error has just been eliminated thoroughly.At counterweight, add in the process of unloading and the process of electromagnetic force variation, all can cause the motion of related device, the balance of device is impacted, applied after compensation hanger 22, can improve the stability of whole device.
In this device oppositely the effect of frame 29 be calutron 28 generations with the equiponderant electromagnetic force of counterweight to sensor.In device, there is a reverse frame crossbeam 32 that can move up and down, be used for adjusting the tension and compression space of tested sensor.Add and unload before counterweight, mobile reverse frame crossbeam 32 band dynamic sensors rise, and make the contact of sensor and reverse frame 29, then load counterweight, and sensor is checked.During unloading, mobile reverse frame crossbeam 32 is downward, then takes off sensor.Oppositely frame crossbeam 32 is mainly driven by two ball-screw B30, and leading screw B30 connects stepper motor 3 by flange-face coupling 4, controls moving up and down of reverse frame crossbeam 32.Oppositely frame crossbeam 32 links together with screw B33, and place four guideposts 31 in front and back symmetry, leading screw B30 is placed between two guideposts 31 in front and back, four guideposts 31 are when increasing system guidance quality, the further rigidity of raising equipment, is conducive to improve the precision that applies of power value.The mode that leading screw B30 drives by stepper motor 3 is consistent with the mode that leading screw A11 drives by stepper motor 3.
Be more than embodiment of the present utility model, but absolutely not to restriction of the present utility model.
Claims (8)
1. Full-automatic electromagnetic type small force value standard apparatus, is characterized in that, comprising:
Equal-arm balance, described equal-arm balance comprises balance crossbeam (23), column (34) and base (1), and described balance crossbeam (23) contacts with described column (34) by middle knife structure, and described column (34) is fixed on described base (1);
Be connected to the counterweight load maintainer of balance crossbeam (23) one end of equal-arm balance, described counterweight load maintainer comprises large counterweight load maintainer (12), middle counterweight load maintainer (17) and miniweights load maintainer (24), and single-chip microcomputer is controlled respectively large counterweight load maintainer (12), middle counterweight load maintainer (17) and miniweights load maintainer (24) by motor and realized loading automatically and unloading;
The calutron (28) that is connected to balance crossbeam (23) other end of equal-arm balance, described calutron (28) lower end is connected with reverse frame (29), and described calutron (28) acts on power value on sensor by reverse frame (29).
2. Full-automatic electromagnetic type small force value standard apparatus according to claim 1, it is characterized in that, described middle knife structure comprises that middle cutter (26), middle cutter box (25) and middle cutter hold (27), described middle cutter (26) is arranged on the centre of the balance crossbeam (23) of described equal-arm balance, the sharp edge of described middle cutter (26) stands on described middle cutter and holds on (27), described middle cutter holds (27) and coordinates with described middle cutter box (25), and described middle cutter box (25) is fixed on crossbeam.
3. Full-automatic electromagnetic type small force value standard apparatus according to claim 1, it is characterized in that, described balance crossbeam (23) is symmetrical structure, described balance crossbeam (23) two ends are respectively arranged with hanger (22), described counterweight load maintainer is fixed on and connects dull and stereotyped (19) below, described connection dull and stereotyped (19) is connected with the hanger (22) of described balance crossbeam (23) one end by hook (20), and described calutron (28) is connected with the hanger (22) of described balance crossbeam (23) other end by hook (20).
4. Full-automatic electromagnetic type small force value standard apparatus according to claim 3, it is characterized in that, described hanger (22) comprises bearing plate (38), crosshead (37), lug hook (35), hanger ring (36) and counterweight bear sheet (39), described crosshead (37) comprises crosshead fixed part (3701) and crosshead movable part (3702), counterweight bears sheet (39) and by crosshead fixed part (3701) and bearing plate (38), holds (40) with cutter and be connected, described crosshead movable part (3702) lower end is connected with described hanger ring (36), described hanger ring (36) lower end is provided with lug hook (35), there is a taper hole described bearing plate (38) back, realize the location of crosshead (37).
5. Full-automatic electromagnetic type small force value standard apparatus according to claim 3, it is characterized in that, described counterweight load maintainer is fixed on and connects dull and stereotyped (19) below and be specially: middle counterweight load maintainer (17) is fixed on the center that connects dull and stereotyped (19), and two large counterweight load maintainers (12) and two miniweights load maintainers (24) are symmetrically distributed in take on the circumference that middle counterweight load maintainer (17) is the oval center of circle.
6. Full-automatic electromagnetic type small force value standard apparatus according to claim 5, it is characterized in that, described each large counterweight load maintainer (12) loads five counterweights, each miniweights load maintainer (24) loads five counterweights, middle counterweight load maintainer (17) loads two counterweights, the power value of a counterweight in middle counterweight load maintainer (17) is identical with the power value of the monolithic counterweight of large counterweight load maintainer (12), and the power value of another counterweight in middle counterweight load maintainer (17) is identical with the power value of the monolithic counterweight of miniweights load maintainer (24).
7. Full-automatic electromagnetic type small force value standard apparatus according to claim 1, is characterized in that, described large counterweight load maintainer (12) comprises that large counterweight is hung (13), large counterweight mechanism supports bar (15), counterweight supports (14) and large counterweight, described large counterweight load maintainer (12) is hung (13) by described large counterweight and is fixed in described connection dull and stereotyped (19), described large counterweight is hung (13) inner horizontal direction and is evenly provided with a plurality of crossbeams, in the middle of described crossbeam, be processed with bellmouth, described large counterweight mechanism supports bar (15) is through described bellmouth, between upper corresponding every adjacent two crossbeams of described large counterweight mechanism supports bar (15), be fixed with described counterweight and support (14), the diameter of described counterweight support (14) is less than the minimum diameter of described bellmouth, described large counterweight is placed on respectively each counterweight and supports on (14), the distance that every adjacent two counterweights support between (14) increases progressively gradually or successively decreases gradually, the minor increment that adjacent two counterweights support between (14) is greater than the distance between adjacent two crossbeams, guarantee to realize large counterweight and hang the load or unload in turn on (13) at large counterweight when large counterweight mechanism supports bar (15) moves up and down, described large counterweight mechanism supports bar (15) lower end and screw A(10) be fixedly connected with described screw A(10) and leading screw A(11) formation screw pair, described leading screw A(11) by stepper motor (3), drive and realize rotation, described large counterweight load maintainer (12), middle counterweight load maintainer (17) are identical with miniweights load maintainer (24) load mode.
8. Full-automatic electromagnetic type small force value standard apparatus according to claim 1, it is characterized in that, described power value standard set-up also comprises fixed flat planar (6) and motor fixing plate (2), describedly comprise that fixed flat planar (6) and motor fixing plate (2) are fixed on the column (34) of equal-arm balance, described fixed flat planar (6) is symmetrically arranged with four guideposts (31) with front and back, described calutron (28) relative position place, before and after be provided with leading screw B(30 between adjacent two guideposts (31)), leading screw B(30) and screw B(33) form screw pair, reverse frame crossbeam (32) and screw B(33) be connected, by being fixed on the driven by motor leading screw B(30 on motor fixing plate (2)) rotate, realize moving up and down of reverse frame crossbeam (32).
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| CN106840326A (en) * | 2016-12-02 | 2017-06-13 | 芜湖市泰能电热器具有限公司 | A kind of automatic weighing equipment |
| CN113819992A (en) * | 2021-09-26 | 2021-12-21 | 山东省计量科学研究院 | Automatic calibrating device for large-mass weight magnitude transfer and working method thereof |
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- 2013-09-25 CN CN201320594807.3U patent/CN203479458U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542977A (en) * | 2013-09-25 | 2014-01-29 | 吉林大学 | Full-automatic electromagnetic balance-type small-force-value standard device |
| CN106197644A (en) * | 2016-08-29 | 2016-12-07 | 中国计量科学研究院 | A kind of big apparatus for measuring quality with groove interconnection counterweight selecting technology |
| CN106248192A (en) * | 2016-08-29 | 2016-12-21 | 中国计量科学研究院 | The big apparatus for measuring quality that a kind of light refraction method and determining displacement method are mutually authenticated |
| CN106289493A (en) * | 2016-08-29 | 2017-01-04 | 中国计量科学研究院 | A kind of big apparatus for measuring quality of high accuracy |
| WO2018040137A1 (en) * | 2016-08-29 | 2018-03-08 | National Institute Of Metrology | A measuring device for measuring large mass with weight picking by slot-type connection |
| CN106197644B (en) * | 2016-08-29 | 2018-10-09 | 中国计量科学研究院 | A kind of big apparatus for measuring quality with groove interconnection counterweight selecting technology |
| CN106248192B (en) * | 2016-08-29 | 2018-10-09 | 中国计量科学研究院 | A kind of big apparatus for measuring quality that light refraction method is mutually authenticated with determining displacement method |
| CN106289493B (en) * | 2016-08-29 | 2018-10-26 | 中国计量科学研究院 | A kind of big apparatus for measuring quality of high accuracy |
| CN106840326A (en) * | 2016-12-02 | 2017-06-13 | 芜湖市泰能电热器具有限公司 | A kind of automatic weighing equipment |
| CN113819992A (en) * | 2021-09-26 | 2021-12-21 | 山东省计量科学研究院 | Automatic calibrating device for large-mass weight magnitude transfer and working method thereof |
| CN113819992B (en) * | 2021-09-26 | 2024-02-06 | 山东省计量科学研究院 | Automatic calibrating device for large-mass weight value transmission and working method thereof |
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