CN101988850B - Device for did not separating knife edge and edge bearing of balance - Google Patents
Device for did not separating knife edge and edge bearing of balance Download PDFInfo
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- CN101988850B CN101988850B CN 200910162555 CN200910162555A CN101988850B CN 101988850 B CN101988850 B CN 101988850B CN 200910162555 CN200910162555 CN 200910162555 CN 200910162555 A CN200910162555 A CN 200910162555A CN 101988850 B CN101988850 B CN 101988850B
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Abstract
The invention provides a device for not separating a knife-edge and an edge bearing of a balance. A lifting platform 1 and a lifting platform 2 are fixedly connected by a connecting lever 2 up and down, wherein a top end of the connecting lever 2 stretches out of the lifting platform 1; a round disc 2 is arranged between the lifting platform 1 and the second lifting platform 2; the round disc 2 is fixed on the bottom of a connecting lever 1; the connecting lever 1 is fixed on an edge bearing base after passing through the top of the lifting platform 1; a round disc 1 is arranged between the lifting platform 1 and the round disc 2; the round disc 1 is supported by a support lever fixed on the round disc 2; a connecting lever 3 is fixed below the round disc 1; the connecting lever 3 passes through the round disc 2 and the lifting platform 2 sequentially; a cross beam is fixed on the bottom of the connecting lever 3; a scale is connected with the central axis of the cross beam; and a semicircular ball 1 and a semicircular ball 2 which correspond to each other are respectively arranged below the central axis of the round disc 1 and above the central axis of the round disc 2. By using the device, the knife-edge and the edge bearing of the balance are not separated, the bottom-loading balance arm ratio is not changed before and after weights change, the equal arm error of the balance is eliminated, and the capacity of reproducing quality value of the balance is improved.
Description
Technical field
The invention belongs to the mass metrology technical field, a kind of ware formula balance that is applied to down specifically is provided, the following ware formula balance knife cutter that can effectively reduce balance equiarm property error holds not release unit.
Background technology
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, and the counterweight of pin-point accuracy has been arranged, and 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 to adopt methods of substitution, like two methods of substitution, single method of substitution, method of substitution or the like continuously.Basic operational steps is: (1) on balance reappears quality difference that standard test weight quality (5) calculate seized counterweight and standard test weight in reproduction standard test weight quality (3) on the balance in the seized counterweight quality of reproduction (4) on the balance according to selected standard test weight of seized counterweight and balance (2).For obtaining higher accuracy of measurement, step (2) can repeatedly circulate to (4).
Because ware formula balance weighing mainly relies on principle of moment balance down, so in the weighing process, can the arm of balance be the gordian technique of balance reproduction counterweight quality than being consistent.In the process of above-mentioned reproduction counterweight quality, seized counterweight and standard test weight replace on the balance scale pan repeatedly.In the time of alternately, the balance state must switch between Kai Heguan, and when balance cut out, the knife cutter of balance held separation, close balance once more after, the knife cutter accept touch stressed, the beginning weighing.Because the knife cutter holds from breaking away from contact, can cause the change of balance arm ratio, therefore; For reducing or eliminating owing to balance arm reappears scarce capacity than changing the counterweight quality that causes; Should make when counterweight replaces, the knife cutter of balance holds and is in contact condition all the time, and the arm that keeps balance is than constant.
Summary of the invention
The object of the present invention is to provide a kind of balance knife cutter to hold not release unit; The knife cutter of balance is held does not break away from, realize that counterweight alternately before and after, following ware formula balance arm ratio remains unchanged; Eliminate the equiarm property error of balance, and then improve the ability of balance reproduction quality value.
Realize the technical scheme of the object of the invention: a kind of balance knife cutter holds not release unit; Its cutter holds and is fixed on cutter bearing below; Knife is fixed on balance cross beam edges tool rest top; This device comprises: through the hoistable platform one and hoistable platform two that connecting rod two is fixedly connected up and down, hoistable platform is stretched out on connecting rod two tops in the lump can be with the butt joint of cutter bearing bottom; Between hoistable platform one and hoistable platform two, be provided with disk two, disk two is fixed on connecting rod one bottom, and connecting rod one passes hoistable platform one top and is fixed on the cutter bearing; Between hoistable platform one and disk two, be provided with disk one, support bar passes disk two, is fixed on the hoistable platform; Below disk one, be fixed with connecting rod three, connecting rod three passes disk two and hoistable platform two successively, and connecting rod three bottoms are fixed with crossbeam, and the scale pan is connected on the crossbeam axis; Be respectively equipped with corresponding semi-round ball one and semi-round ball two below disk one axis with above disk two axis, after semi-round ball one and semi-round ball two docked, disk one can break away from the support of support bar, changes into through disk two supports.
Aforesaid balance knife cutter holds not release unit, and its hoistable platform one is fixedly connected up and down through symmetrically arranged 2 connecting rods two with hoistable platform two; Disk two is fixed on symmetrically arranged 2 connecting rod one bottoms; The support bar that passes disk two, is fixed on the hoistable platform is symmetrically arranged 2 support bars.
Effect of the present invention is:
A kind of balance knife cutter of the present invention holds not release unit, the knife cutter of balance is held do not break away from, realize that counterweight alternately before and after, following ware formula balance arm ratio remains unchanged, and eliminates the equiarm property error of balance, and then improves the ability of balance reproduction quality value.
Descending to adopt on the ware formula balance knife cutter that prevents of the present invention to hold not release unit front and back, its repeatability has bigger variation, and table 1, table 2 are measured datas of following ware formula balance, to 10 measurement results, utilize Bezier formula basis of calculation deviation to obtain repeatability.Measurement data when table 1 holds release unit not for not adopting knife cutter of the present invention, repeatability be 8.4mg, and table 2 is that employing knife cutter of the present invention holds the not measurement data of release unit, and repeatability is 5.5mg.
Table 1
Table 2
Description of drawings
Fig. 1 holds not release unit structural representation for balance knife cutter of the present invention;
Among the figure: 1. cutter bearing; 2. cutter holds; 3. knife; 4. balance cross beam edges tool rest; 5. connecting rod one; 6. hoistable platform one; 7. disk one; 8. semi-round ball one; 9. semi-round ball two; 10. disk two; 11. cramp bar; 12. connecting rod two; 13. hoistable platform two; 14. connecting rod three; 15. the scale pan; 16. crossbeam.
Embodiment
Holding not below in conjunction with accompanying drawing and instantiation to balance knife cutter of the present invention, release unit further describes.
As shown in Figure 1; A kind of ware formula balance knife cutter down of the present invention holds not release unit; Its cutter holds 2 and is fixed on cutter bearing 1 below; Knife 3 is fixed on balance cross beam edges tool rest 4 tops, and hoistable platform 1 is fixedly connected up and down through symmetrically arranged 2 connecting rods 2 12 with hoistable platform 2 13, and connecting rod 2 12 tops are stretched out hoistable platform one 6 tops and can be docked with cutter bearing 1 bottom.Disk 2 10 is arranged between hoistable platform 1 and the hoistable platform 2 13, passes hoistable platform 1 through symmetrically arranged 2 connecting rods 1 and is fixed on the cutter bearing 1.Connecting rod 2 12 tops are fixed on the cutter bearing 1, and connecting rod 2 12 bottoms are fixed with disk 2 10.Disk 1 is arranged between hoistable platform 1 and the disk 2 10; Can support through symmetrically arranged 2 support bars 11 that are fixed on disk 2 10 tops; Symmetrically arranged 2 connecting rod 3 14 tops are fixed on disk one 7 belows; And pass disk 2 10 and hoistable platform 2 13 successively, and the bottom is fixed with crossbeam 16, and the scale pan 15 is connected on crossbeam 16 axis.Be respectively equipped with corresponding semi-round ball 1 and semi-round ball 29 below disk one 7 axis with above disk 2 10 axis, after semi-round ball 1 and semi-round ball 29 docked, disk 1 can break away from the support of support bar 7, changed into through disk 2 10 and supporting.
Above-mentioned hoistable platform one (6) and hoistable platform two (13) are connected with cam mechanism, drive by cam mechanism, but vertical lifting.
Balance knife cutter of the present invention holds not release unit, can set up half-open position for balance.When half-open position, the scale pan 15 and institute thereof add counterweight and are supported by hoistable platform 1, at this moment, cutter bearing 1, cutter hold 2, the action of gravity of connecting rod 1, disk 2 10 on knife 3, the knife cutter holds and does not break away from.Because balance is when weighing, the knife cutter holds and does not break away from, and like this, in the whole process of using method of substitution weighing counterweight quality, the knife cutter holds and do not break away from, and the arm of balance is than constant.Below the weighing process is specifically described.
(a) during the balance Close All; Hoistable platform 1 is positioned at the extreme higher position with hoistable platform 2 13, and cutter held 2 and was fixedly connected disk one 7 supported bars 11 supports with cutter bearing 1 this moment; Semi-round ball 1 is maximum with semi-round ball 29 distances, is fixed on knife 3 on the balance cross beam edges tool rest and holds 2 with cutter and separate.
(b) hoistable platform 1 and hoistable platform 2 13 are moved straight down; Disk 1 is also along with moving downward; Disk 1 supports through support bar 11, and about 1mm, this moment, balance was in half-open position up to semi-round ball 28 and semi-round ball 29 distances; Cutter bearing 1, cutter hold 2, the gravity of connecting rod 1, disk 2 10 holds 2 through cutter and acts on the knife 3, and the knife cutter holds tight contact.The scale pan 15 and add the load of counterweight, through connecting rod 3 14, disk 1, cramp bar 11, hoistable platform 2 13, connecting rod 2 12, be loaded on the hoistable platform 1, and finally act on the stationary plane.
(c) during the weighing standard test weight, after loading standard test weight on the scale pan 15, make hoistable platform 1 and hoistable platform 2 13 continue motion straight down; Disk 1 also continues along with moving downward, and after 29 of semi-round ball 1 and semi-round balls contacted, support bar 11 is support disk 1 no longer; This moment the balance full-gear; The scale pan 15 and add the load of counterweight, through connecting rod 3 14, disk 1, hemisphere 1, hemisphere 29, affact on the disk 2 10, and hold 2, affact on the knife 3 through connecting rod 1, cutter bearing 1, cutter; Stressed on the knife 3 born by balance cross beam edges tool rest 4.Like this, the stressed of balance born by the balance crossbeam, can begin weighing.
(d) after the standard test weight weighing finishes, make balance be in half-open position, and take off standard test weight, change seized counterweight from the scale pan 15.
(e) action of repetition (c), the seized counterweight of ponderable quantity.
(f) after seized counterweight weighing finishes, make balance be in half-open position, and take off seized counterweight, change standard test weight from the scale pan 15.
(g) repeat c) action, ponderable quantity standard test weight, and calculate the difference of seized counterweight and standard test weight.
Repeat (c)～(g), can be implemented in balance arm, accurately the quality difference of weighing standard test weight and seized counterweight than under the constant situation.
Claims (2)
1. a balance knife cutter holds not release unit, and its cutter holds (2) and is fixed on cutter bearing (1) below, and knife (3) is fixed on balance cross beam edges tool rest (4) top, it is characterized in that this device comprises:
Through hoistable platform one (6) and the hoistable platform two (13) that connecting rod two (12) is fixedly connected up and down, connecting rod two (12) tops are stretched out hoistable platform one (6) and can be docked with cutter bearing (1) bottom;
Between hoistable platform one (6) and hoistable platform two (13), be provided with disk two (10), disk two (10) is fixed on connecting rod one (5) bottom, and connecting rod one (5) passes hoistable platform one (6) top and is fixed on the cutter bearing (1);
Between hoistable platform one (6) and disk two (10), be provided with disk one (7), support bar (11) passes disk two (10), is fixed on the hoistable platform two (13);
Be fixed with connecting rod three (14) in disk one (7) below, connecting rod three (14) passes disk two (10) and hoistable platform two (13) successively, and connecting rod three (14) bottoms are fixed with crossbeam (16), and the scale pan (15) is connected on crossbeam (16) axis;
Be respectively equipped with corresponding semi-round ball one (8) and semi-round ball two (9) in below, disk one (7) axis and top, disk two (10) axis; After semi-round ball one (8) and semi-round ball two (9) butt joints; The support that disk one (7) can break away from support bar (11) changes into through disk two (10) and supporting.
2. balance knife cutter according to claim 1 holds not release unit, it is characterized in that: above-mentioned hoistable platform one (6) is fixedly connected up and down through symmetrically arranged 2 connecting rods two (12) with hoistable platform two (13); Above-mentioned disk two (10) is fixed on symmetrically arranged 2 connecting rods one (5) bottom; The support bar (11) that above-mentionedly pass disk two (10), is fixed on hoistable platform two (13) tops is symmetrically arranged 2 support bars (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910162555 CN101988850B (en) | 2009-08-03 | 2009-08-03 | Device for did not separating knife edge and edge bearing of balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910162555 CN101988850B (en) | 2009-08-03 | 2009-08-03 | Device for did not separating knife edge and edge bearing of balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988850A CN101988850A (en) | 2011-03-23 |
| CN101988850B true CN101988850B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910162555 Active CN101988850B (en) | 2009-08-03 | 2009-08-03 | Device for did not separating knife edge and edge bearing of balance |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889920A (en) * | 2012-08-14 | 2013-01-23 | 昆山大百科实验室设备工程有限公司 | Novel side blade of balance |
| CN107978944B (en) * | 2017-12-29 | 2024-06-07 | 扬州海通电子科技有限公司 | Synchronous rotating device of large slip ring group |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB905530A (en) * | 1960-11-18 | 1962-09-12 | Erhard Mettler | Improvements in or relating to chemical balances |
| US3782485A (en) * | 1971-08-04 | 1974-01-01 | Sartorius Werke Gmbh | Weighing balances with parallelogram support formed by two parallel guide members |
| CN2205545Y (en) * | 1994-11-05 | 1995-08-16 | 中国航天工业总公司第一计量测试研究所 | Balance knife, knife bearing non-separating device capable of loading and unloading weight |
| CN1122907A (en) * | 1994-11-05 | 1996-05-22 | 中国航天工业总公司第一计量测试研究所 | Balance knife, knife bearing non-separating device capable of loading and unloading weight |
-
2009
- 2009-08-03 CN CN 200910162555 patent/CN101988850B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB905530A (en) * | 1960-11-18 | 1962-09-12 | Erhard Mettler | Improvements in or relating to chemical balances |
| US3782485A (en) * | 1971-08-04 | 1974-01-01 | Sartorius Werke Gmbh | Weighing balances with parallelogram support formed by two parallel guide members |
| CN2205545Y (en) * | 1994-11-05 | 1995-08-16 | 中国航天工业总公司第一计量测试研究所 | Balance knife, knife bearing non-separating device capable of loading and unloading weight |
| CN1122907A (en) * | 1994-11-05 | 1996-05-22 | 中国航天工业总公司第一计量测试研究所 | Balance knife, knife bearing non-separating device capable of loading and unloading weight |
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|---|---|
| CN101988850A (en) | 2011-03-23 |
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