CN101893473B - Automatic switching device for bottom-loading balance weights - Google Patents
Automatic switching device for bottom-loading balance weights Download PDFInfo
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- CN101893473B CN101893473B CN 200910142867 CN200910142867A CN101893473B CN 101893473 B CN101893473 B CN 101893473B CN 200910142867 CN200910142867 CN 200910142867 CN 200910142867 A CN200910142867 A CN 200910142867A CN 101893473 B CN101893473 B CN 101893473B
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Abstract
The invention discloses an automatic switching device for bottom-loading balance weights. The device comprises a rotary disc rotating shaft, a balance scale pan, a rotary disc, a lug boss and a weigh beam, wherein the two ends of the rotary disc are provided with circular discs with grooves and the middle parts of the circular discs are connected through a rectangular block so as to form a symmetric structure; a cylindrical rotary disc rotating shaft capable of lifting and rotating is connected below the symmetric centre of the rotary disc; the balance scale pan is positioned below one circular disc end of the rotary disc and provided with the lug boss which passes through the grooves on the circular discs of the rotary disc; the height of the lug boss is slightly greater than the thickness of the rotary disc; and the balance scale pan is connected with the weigh beam. Because the device realizes automatic switching during the measurement, the operation such as manual switching of weights, opening and closing of a balance housing and the like are prevented and the measurement accuracy is greatly improved; and by using the balance with automatically switched weights, the number of division reaches 2*10<7>.
Description
Technical field
The present invention relates to the mass metrology field, be specifically related to a kind of automatic switching device for bottom-loading balance weights.
Background technology
The present invention is only to being used for the following ware formula balance that the quality amount passes.
Pass the field in the quality amount, be concerned about the repeatability of balance most, repeatability is more little good more.In the quality transmission of quantity value process, counterweight is the primary standard device, and counterweight is the material measure that is subordinated to balance, and balance is mainly used in reproduction counterweight quality value.Therefore, the balance weighing performance is the important component part that the quality amount passes ability.The counterweight that pin-point accuracy has been arranged, balance that also must supporting pin-point accuracy could make up the counterweight standard set-up of pin-point accuracy.
According to the regulation of " JJG99-2006 weight detecting rules ", the quality amount passes and all adopts method of substitution.On following ware formula balance, place fixing counterweight counterweight on scale pan of balance, alternately place standard test weight and seized counterweight on another scale pan.Basic operational steps is: (1) is according to selected standard test weight of seized counterweight and balance; (2) reproduction standard test weight quality on balance; (3) the seized counterweight quality of reproduction on balance; (4) reproduction standard test weight quality on balance; (5) the quality difference of seized counterweight of calculating and standard test weight.For obtaining higher accuracy of measurement, step (2) can repeatedly circulate to (4).
In the said process, seized counterweight and standard test weight replace on the balance scale pan repeatedly, and traditionally, the counterweight exchange must have artificial the participation.Concrete workflow is: hurricane globe is opened in (1), loads standard test weight; (2) open balance and reading; (3) close balance, open the balance hurricane globe, take off standard test weight, load seized counterweight; (4) close hurricane globe, open balance and treat stable back reading.For obtaining higher accuracy of measurement, can repeatedly repeat above step.
This artificial counterweight switching method is introduced bigger measuring error: (1) calibration of weight must be opened the balance hurricane globe.Experimental result shows: switch 20kg balance hurricane globe once needs 1 hour even longer time, and balance reading just can settle out, get off if wait for stable reading, then the temperature of balance float with the time float and become new error source.(2) the counterweight exchange must have artificial the participation, and during artificial the participation, counterweight places the position on the balance scale pan not repeat; (3) dynamics of counterweight placement can not repeat, and possibly bring impact; (4) thermal radiation of body influences balance equiarm property; (5) people's breathing, sweat stain on hand etc. all influence near the humidity the balance scale pan, cause air turbulence or the like.
According to the regulation of " JJG99-2006 weight detecting rules ", for improving accuracy of measurement, when the counterweight amount passes, should repeatedly exchange counterweight, get the mean value of measurement result, repeatedly exchange counterweight, also bring big other drawback that waits of labour intensity.
Summary of the invention
The purpose of this invention is to provide a kind of automatic switching device for bottom-loading balance weights, realize that counterweight exchanges automatically, eliminate the error of bringing because of the manual work participation, and then improve the ability of balance reproduction quality value, reduce labour intensity.
Realize technical scheme of the present invention: a kind of automatic switching device for bottom-loading balance weights, its balance scale pan is connected with an arm of balance through the scale beam, and this device comprises disk shaft, rotating disk and boss; The two ends of rotating disk are the middle symmetrical structure that connects through a rectangular block of disk that has groove, below the symcenter of rotating disk, are connecting the disk shaft of a cylindrical liftable, rotation; Below a disk end of rotating disk is the balance scale pan, and the balance scale pan is provided with boss and passes the groove on the rotating disk disk, and the height of boss is a little more than the thickness of rotating disk.
The number of the groove on the disk at the two ends of above-mentioned rotating disk is identical, can open 5 or 7 according to the size of disk, the rectangle that these grooves differ in size, and the distribution that is centrosymmetric; Boss also has 5 or 7 and be complementary with groove.
Above-mentioned disk shaft drives through a fluid pressure drive device, and slowly VTOL (vertical take off and landing) also can horizontally rotate 360 °.
The beneficial effect that the present invention obtains:; The present invention has realized the automatic exchange of measuring process; Avoid artificial exchange counterweight, can effectively reduce a series of errors that produce because of the manual work participation; Like switch balance hurricane globe, human body radiation, moisture, operation technique or the like, improved accuracy of measurement greatly.Adopt the balance after counterweight exchanges automatically, its number of divisions reaches 2 * 10
7, also reduced labour intensity.
Description of drawings
Fig. 1 automatic switching device for bottom-loading balance weights front view.
Fig. 2 automatic switching device for bottom-loading balance weights vertical view.
Fig. 3 automatic switching device for bottom-loading balance weights right view.
Fig. 4 automatic switching device for bottom-loading balance weights stereographic map.
Among the figure: the 1-disk shaft; The 2-balance scale pan; The 3-rotating disk; The 4-boss; 5-scale beam 6-groove.
Embodiment
Specify a kind of automatic switching device for bottom-loading balance weights of the present invention below in conjunction with accompanying drawing.
Like Fig. 1,2, shown in 3 and 4, a kind of automatic switching device for bottom-loading balance weights of the present invention comprises disk shaft 1, the balance scale pan 2, rotating disk 3, boss 4 and scale beam 5.Rotating disk 3 is that identical disk centre is a rectangular stainless steel symmetrical structure for two ends.The columniform stainless steel disk shaft 1 of an outer smooth is being fixed in the symcenter below of rotating disk 3; The bottom of disk shaft 1 is connected with the fluid pressure drive device of a minitype motor driving, can slide up and down slowly in the drive lower rotary table rotating shaft 1 of this drive unit, freedom rotates slowly.Be equipped with 7 rectangular through slot that vary in size 6 on the two ends disk of rotating disk 3; Below a disc end of rotating disk 3 is the balance scale pan 2; The balance scale pan 2 is connected with an arm of balance through scale beam 5; The balance scale pan 2 be provided with 3 liang of side discs of rotating disk on 7 boss 4 being complementary of groove 6, these 7 boss 4 can pass the groove 6 on 3 liang of side discs of rotating disk, and the height of boss 4 is a little more than the thickness of rotating disk 3.Disk shaft 1 can go up and down up and down by drive rotating disk 3 under the effect of fluid pressure drive device slowly; Counterweight on the boss 4 that makes rotating disk 3 to lift to be in the scale pan 2; Drop to the last plane that boss 4 when minimum exceeds rotating disk 3 a little, and the lower plane of rotating disk 3 can not touch plane on the balance scale pan 2.Disk shaft 1 can also drive rotating disk 3 be that 360 ° rotation is carried out at the center with disk shaft 1 under the effect of fluid pressure drive device; And accurately locate; Make that the counterweight on two disks being in rotating disk 3 can be in measuring process, carry out alternately rotating on the balance scale pan 2 repeatedly without the manual work replacement.
Method of application of this device of explanation and exchange process below automatically:
(a) during initial state, rotating disk 3 is positioned at the balance scale pan 2 tops, and standard test weight and seized counterweight place respectively on the two ends disk of rotating disk 3;
(b) rotating disk 3 declines put in place standard test weight are placed on the boss 4 of the balance scale pan, beginning weighing standard test weight;
(c) weighing finishes, and rotating disk 3 turns clockwise 180 ° after rising to the boss 4 that breaks away from the balance scale pan 2;
(d) rotating disk 3 declines put in place seized counterweight are placed on the boss 4 of the balance scale pan, the seized counterweight of beginning weighing;
(e) weighing finishes, and rotating disk 3 turns clockwise 180 ° after rising to the boss 4 that breaks away from the balance scale pan 2, gets back to original state;
(f) repeat above action, counterweight exchanges repeatedly automatically and carries out.
Because this automatic clearing apparatus does not have artificial contact in the process that counterweight exchanges repeatedly, do not have switch sky plain bonnet, the dynamics of having eliminated the counterweight placement can not repeat, and thermal radiation of body influences balance equiarm property; People's breathing, sweat stain on hand influence near the humidity the balance scale pan, cause the influence of factors such as air turbulence, have significantly reduced the stabilization time of balance, the accuracy that has improved measurement result, adopt the balance after counterweight exchanges automatically, and its number of divisions reaches 2 * 10
7
Claims (3)
1. automatic switching device for bottom-loading balance weights, its balance scale pan (2) is connected with an arm of balance through scale beam (5), and it is characterized in that: this device comprises disk shaft (1), rotating disk (3) and boss (4); The disk that has groove (6) is arranged at the two ends of rotating disk (3) symmetrically, connects through a rectangular block in the middle of the disk, is connecting the disk shaft (1) of a cylindrical liftable, rotation in the symcenter below of rotating disk (3); Below a disk end of rotating disk (3), be the balance scale pan (2), the balance scale pan (2) is provided with boss (4) and passes the groove on rotating disk (3) disk, and the height of boss (4) is a little more than the thickness of rotating disk (3).
2. a kind of automatic switching device for bottom-loading balance weights according to claim 1; It is characterized in that: the number of the groove (6) on the disk at the two ends of above-mentioned rotating disk (3) is identical; Open 5 or 7 according to the size of disk, these grooves are the rectangles that differ in size, and the distribution that is centrosymmetric; Boss (4) also has 5 or 7 and be complementary with groove (6).
3. a kind of automatic switching device for bottom-loading balance weights according to claim 1 is characterized in that: above-mentioned disk shaft (1) drives through a fluid pressure drive device, and slowly VTOL (vertical take off and landing) also can horizontally rotate 360 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910142867 CN101893473B (en) | 2009-05-19 | 2009-05-19 | Automatic switching device for bottom-loading balance weights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910142867 CN101893473B (en) | 2009-05-19 | 2009-05-19 | Automatic switching device for bottom-loading balance weights |
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| Publication Number | Publication Date |
|---|---|
| CN101893473A CN101893473A (en) | 2010-11-24 |
| CN101893473B true CN101893473B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910142867 Active CN101893473B (en) | 2009-05-19 | 2009-05-19 | Automatic switching device for bottom-loading balance weights |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893474B (en) * | 2009-05-19 | 2012-01-25 | 北京航天计量测试技术研究所 | Self-centering apparatus for bottom-loading balance weights |
| CN103148923B (en) * | 2013-01-31 | 2014-12-03 | 中国计量学院 | Gram group weight automatically measuring system |
| CN109506758B (en) * | 2018-11-26 | 2024-02-09 | 青岛容广电子技术有限公司 | Standard weight taking and placing device for constant temperature and humidity automatic weighing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227328Y (en) * | 1994-06-16 | 1996-05-15 | 机械工业部上海工业自动化仪表研究所 | Inclined splitting type weight loading and unloading device |
| CN2544267Y (en) * | 2002-04-16 | 2003-04-09 | 中国三江航天集团远方科技开发公司 | Automatic balance weight loading/unloading device for pressure meter |
| JP2008026246A (en) * | 2006-07-25 | 2008-02-07 | Shimadzu Corp | Balance |
-
2009
- 2009-05-19 CN CN 200910142867 patent/CN101893473B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227328Y (en) * | 1994-06-16 | 1996-05-15 | 机械工业部上海工业自动化仪表研究所 | Inclined splitting type weight loading and unloading device |
| CN2544267Y (en) * | 2002-04-16 | 2003-04-09 | 中国三江航天集团远方科技开发公司 | Automatic balance weight loading/unloading device for pressure meter |
| JP2008026246A (en) * | 2006-07-25 | 2008-02-07 | Shimadzu Corp | Balance |
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| CN101893473A (en) | 2010-11-24 |
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