CN101666671A - Double range weighing sensor - Google Patents
Double range weighing sensor Download PDFInfo
- Publication number
- CN101666671A CN101666671A CN200810120812A CN200810120812A CN101666671A CN 101666671 A CN101666671 A CN 101666671A CN 200810120812 A CN200810120812 A CN 200810120812A CN 200810120812 A CN200810120812 A CN 200810120812A CN 101666671 A CN101666671 A CN 101666671A
- Authority
- CN
- China
- Prior art keywords
- elastic body
- strainometer
- weighing sensor
- range
- strain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of Force In General (AREA)
Abstract
The invention provides a double range weighing sensor. The double range weighing sensor comprises an elastic body and strain gauges connected with Wheatstone bridges, wherein the elastic body is provided with strain areas in which the strain gauges are glued. The double range weighing sensor is characterized in that the elastic body adopts a whole structure; the surface of the elastic body is provided with a first strain area and a second strain area respectively, and correspondingly the strain gauges comprise a first strain gauge(4) with a smaller range and a second strain gauge(5) with a larger range, wherein the first strain gauge(4) and the second strain gauge(5) are connected to the Wheatstone bridges (6 and 7) respectively; and the elastic body(3) is provided with an S-shaped first overload protection hook(34) between the first strain gauge(4) and the second strain gauge(5). Compared with the prior art, the double range weighing sensor has the advantages that: due to the adoptionof the overload protection structure in the elastic body, the strain area with the smaller range is protected when the larger range is used; the smaller range can also be independently sued, so thatthe weighing precision can be ensured; and the double range weighing sensor also has the advantages of simple whole structure, reasonable design, and lower manufacturing cost.
Description
Technical field
The present invention relates to a kind of LOAD CELLS, relate in particular to a kind of double range weighing sensor with large and small two ranges.
Background technology
Common LOAD CELLS can only realize weighing of a range specification, and measurement range is narrow, and for the industrial weighing occasion of measurement range broad, when adopting the sensor measurement of wide range, the part of little range can't meet the demands because of the too small precision of range.
As improvement, double-range or multiple range LOAD CELLS pertinent literature also have open, as the patent No. is the Chinese invention patent Weighing method of scale " use the multi-range load cell " (authorization number: CN1013517B) of ZL86106412, this patent is simultaneously stressed with a plurality of sensors, i.e. load is added on several force cells simultaneously, and the weigh force cell of scope of a plurality of differences is connected to each other together and uses, judge that by electric signal big or small range switches, there is complex structure in it, the shortcoming that manufacturing cost is high; And for example application number is open " double weighing sensor composite weighing device " (publication number: CN101187581A) of Chinese invention patent application of 200710151175.2, this patent comprises a housing, the top is equipped with a carriage in the housing, the lead-in wire that is used to weigh is passed and is fixed on carriage by case top, be fixed with long and short two root pull spring below the carriage, short pull spring lower end is hung with drawing and pressing type sensor and mass successively, the below of mass is the pallet that is fixed on the housing, and the lower end of long pull spring is fixed with the cantilever end of the beam type sensor that is positioned at the pallet below.
Summary of the invention
Technical matters to be solved by this invention is to provide the occasion switching according to actual needs of a kind of wide range and little range to use to reach the double range weighing sensor of the accurate purpose of weighing in addition at the above-mentioned state of the art.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of double range weighing sensor; comprise elastic body and the strainometer that is connected with Wheatstone bridge; has strain regions on this elastic body; aforesaid strainometer then is pasted on this strain regions; it is characterized in that described elastic body adopts integrally-built elastic body; first strain regions and second strain regions that are furnished with respectively at surface of elastomer; accordingly; strainometer comprises first strainometer with less range and second strainometer with relatively large journey; this first strainometer and second strainometer are connected with Wheatstone bridge separately respectively; and described elastic body has the S type first overload protection hook between aforesaid first strainometer and second strainometer.
Further improve, described elastic body adopts the alloy steel of rectangular parallelepiped strip, is processed with through hole at elastomeric upper-lower position, and strainometer sticks on the parallel surface of described elastic body through hole below, to improve measuring accuracy, reduces systematic error.
As preferably, the gap of the described first overload protection hook is 0.1～1.0mm.
Further, described elastic body has the S type second overload protection hook near a side of described first strainometer.As preferably, the gap of the described second overload protection hook is 0.1～1.0mm.
Be the convenient elastic body of installing, described elastic body upper surface and lower surface have the screw that is used to be spirally connected respectively.Described elastic body perisporium is arranged with a protection case, and this protection case is provided with described elastic body and draws the plug that lead links to each other, and this protection case top and bottom are spirally connected by upper cover plate and lower cover and described elastic body respectively.
At last, described elastic body is milled with slotted eye between the jack of first strain regions and second strain regions and side, is convenient to connecting line connection is installed.
Compared with prior art, the invention has the advantages that: by the overcurrent protection structure of elastic body inside, when using wide range, the journey strain regions is protected in a small amount; Little range also can use separately, can guarantee the precision of weighing like this.Only adopt an elastic body of one-piece construction formula, so one-piece construction is simply compact, reasonable in design, manufacturing cost is lower again.
Description of drawings
Fig. 1 is an embodiment surface structure synoptic diagram.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is an elastic body structural representation among the embodiment.
Fig. 4 is along the amplification view of A-A direction among Fig. 3.
Fig. 5 is along the amplification view of B-B direction among Fig. 3.
Fig. 6 is a M portion enlarged drawing among Fig. 3.
Fig. 7 is a N portion enlarged drawing among Fig. 3.
Fig. 8 is an embodiment Wheatstone bridge wiring diagram.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment: with reference to figure 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the double range weighing sensor in the present embodiment comprises protection case 1, upper cover plate 8, lower cover 9, elastic body 3 and strainometer.
Elastic body 3 is located in the confined space of being made up of protection case 1, upper cover plate 8 and lower cover 9, is connected and fixed with upper cover plate 8 and lower cover 9 respectively by screw 31 and screw 32, protects case 1 to be provided with elastic body 3 simultaneously and draws the plug 2 that lead links to each other.Elastic body 3 in the present embodiment is the rectangular parallelepiped strip, and material is an alloy steel, through high-temperature heat treatment, and chemical nickel plating on surface.
Be processed with through hole 37,38 at elastomeric upper-lower position, make the strain regions that have two vertical layouts on the parallel surface of elastic body 3 through holes below, be pasted with first strainometer 4 with less range and second strainometer, 5, the first strainometers 4 and the range size between second strainometer 5 respectively than preferred 1: 10 with relatively large journey.
Elastic body 3 has the S type first overload protection hook 34, the first overload protection hooks 34 between first strainometer 4 and second strainometer 5 gap 341 is 0.1～1.0mm (with reference to shown in Figure 7).Elastic body 3 has the S type second overload protection hook 33 near a side of first strainometer 4.The gap 331 of the second overload protection hook 33 is 0.1～1.0mm (with reference to shown in Figure 6).
At last, elastic body 3 is milled with slotted eye 39 between the jack 21 of first strain regions and second strain regions and side, and jack 21 is to be used for installing plug 2, arranges that like this connecting line is convenient.
With reference to shown in Figure 8, first strainometer 4 and second strainometer 5 are connected with Wheatstone bridge 6 and Wheatstone bridge 7 separately respectively, the driving voltage positive pole of Wheatstone bridge 6 forms a voltage signal with anodal linking to each other of the driving voltage of Wheatstone bridge 7, the driving voltage negative pole of Wheatstone bridge 6 links to each other with the driving voltage negative pole of Wheatstone bridge 7 and forms a voltage signal, the voltage signal of Wheatstone bridge 6 voltage signal positive pole anodal and Wheatstone bridge 7 forms voltage signal respectively, and the voltage signal negative pole of Wheatstone bridge 6 and the voltage signal negative pole of Wheatstone bridge 7 form voltage signal respectively.
Principle of work: two range strainometer common-battery sources; sub-signal output; external double-range Displaying Meter; in use; in the process that range changes from small to big; when range reaches a small amount of journey full load; two ranges are all being accepted load increase operate as normal; instrument shows the numerical value of current little range; when range is increased to the wide range fully loaded process at full capacity from a small amount of journey; little range section is protected by overcurrent protection structure and is no longer accepted the load increase, has only the wide range part in the increase that continues to accept load, and the instrument that wide range connects shows the numerical value of current wide range.
Claims (8)
1; a kind of double range weighing sensor; comprise elastic body and the strainometer that is connected with Wheatstone bridge; has strain regions on this elastic body; strainometer then is pasted on the strain regions; it is characterized in that described elastic body adopts integrally-built elastic body; first strain regions and second strain regions that are furnished with respectively at surface of elastomer; accordingly; described strainometer comprises first strainometer (4) with less range and second strainometer (5) with relatively large journey; this first strainometer (4) and second strainometer (5) are connected to Wheatstone bridge (6 separately; 7) on; and described elastic body (3) has the S type first overload protection hook (34) between described first strainometer (4) and second strainometer (5).
2, double range weighing sensor according to claim 1, it is characterized in that described elastic body (3) adopts the alloy steel of rectangular parallelepiped strip, be processed with through hole (37,38) at elastomeric upper-lower position, strainometer sticks on the parallel surface of described elastic body through hole below.
3, double range weighing sensor according to claim 2 is characterized in that the gap (341) of the described first overload protection hook (34) is 0.1～1.0mm.
4, double range weighing sensor according to claim 3 is characterized in that described elastic body (3) has the S type second overload protection hook (33) near a side of described first strainometer (4).
5, double range weighing sensor according to claim 4 is characterized in that the gap (331) of the described second overload protection hook (33) is 0.1～1.0mm.
6,, it is characterized in that described elastic body (3) upper surface and lower surface have the screw (31,32) that is used to be spirally connected respectively according to the arbitrary described double range weighing sensor of claim 1～5.
7, double range weighing sensor according to claim 6; it is characterized in that described elastic body (3) perisporium is arranged with a protection case (1); this protection case (1) is provided with described elastic body (3) and draws the plug (2) that lead links to each other; and this protection case (1) top and bottom are spirally connected with described elastic body (3) by upper cover plate (8) and lower cover (9) respectively.
8, double range weighing sensor according to claim 7 is characterized in that described elastic body (3) is milled with slotted eye (39) between the jack (21) of first strain regions and second strain regions and side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101208124A CN101666671B (en) | 2008-09-05 | 2008-09-05 | Double range weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101208124A CN101666671B (en) | 2008-09-05 | 2008-09-05 | Double range weighing sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101666671A true CN101666671A (en) | 2010-03-10 |
| CN101666671B CN101666671B (en) | 2011-07-20 |
Family
ID=41803387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101208124A Expired - Fee Related CN101666671B (en) | 2008-09-05 | 2008-09-05 | Double range weighing sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101666671B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564557A (en) * | 2011-12-31 | 2012-07-11 | 李雪尔 | Build-up force standard machine with wide range, |
| CN103335699A (en) * | 2013-05-31 | 2013-10-02 | 梅特勒-托利多(常州)精密仪器有限公司 | Elastic body structure of multi-range weighing sensor |
| WO2014146525A1 (en) * | 2013-03-18 | 2014-09-25 | 梅特勒-托利多(常州)精密仪器有限公司 | Column type elastic body |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
| CN105937965A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Portable electronic scale |
| CN105937956A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Safety type combined electronic scale |
| CN105938008A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Dual-purpose combined electronic scale |
| CN105937984A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Security type dual-sensing electronic scale |
| CN105937977A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Novel combined electronic scale |
| CN105937955A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Multifunctional combined electronic scale |
| CN105973383A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Safety electronic scale |
| CN105973403A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Dual-purpose dual-sensor electronic scale |
| CN106017645A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Safety-type double-precision electronic scale |
| CN106248190A (en) * | 2016-09-07 | 2016-12-21 | 合肥三冠包装科技有限公司 | A kind of four-head scale Weighing module and vibrations regulating circuit |
| CN106248188A (en) * | 2016-09-07 | 2016-12-21 | 合肥三冠包装科技有限公司 | A kind of weighing circuit of six scale weighing instruments |
| CN106404527A (en) * | 2016-11-22 | 2017-02-15 | 苏州达美特汽车测试技术有限公司 | Double-range force sensor for dynamic impact testing |
| CN106441542A (en) * | 2016-09-07 | 2017-02-22 | 合肥三冠包装科技有限公司 | Voltage regulating vibrator voltage regulating circuit for standard six-head weigher |
| CN107607251A (en) * | 2017-09-08 | 2018-01-19 | 上海工业自动化仪表研究院有限公司 | A kind of differential pressure or pressure transmitter with double-range |
| CN107941266A (en) * | 2016-10-13 | 2018-04-20 | 克朗斯股份公司 | Monitored using the cleaning for covering the progress of thing sensor |
| CN111122038A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection device and method and engineering machinery |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3295086A (en) * | 1964-07-02 | 1966-12-27 | Blh Electronics | Multi-range load cells |
| US4375243A (en) * | 1981-03-30 | 1983-03-01 | Doll W Gary | Wide range high accuracy weighing and counting scale |
| JPS6196422A (en) * | 1984-10-17 | 1986-05-15 | Tokyo Electric Co Ltd | Multi-range load cell balance |
| CN85104807B (en) * | 1985-06-02 | 1986-08-06 | 哈尔滨工业大学 | Multi-range load cell |
| JP3855780B2 (en) * | 2002-01-29 | 2006-12-13 | 株式会社島津製作所 | Strain gauge type load sensor |
| CN1704735A (en) * | 2004-05-25 | 2005-12-07 | 宇权兴业股份有限公司 | Electronic scale |
-
2008
- 2008-09-05 CN CN2008101208124A patent/CN101666671B/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564557A (en) * | 2011-12-31 | 2012-07-11 | 李雪尔 | Build-up force standard machine with wide range, |
| WO2014146525A1 (en) * | 2013-03-18 | 2014-09-25 | 梅特勒-托利多(常州)精密仪器有限公司 | Column type elastic body |
| CN103335699A (en) * | 2013-05-31 | 2013-10-02 | 梅特勒-托利多(常州)精密仪器有限公司 | Elastic body structure of multi-range weighing sensor |
| CN106017645A (en) * | 2016-01-20 | 2016-10-12 | 申俊 | Safety-type double-precision electronic scale |
| CN105937965A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Portable electronic scale |
| CN105937956A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Safety type combined electronic scale |
| CN105938008A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Dual-purpose combined electronic scale |
| CN105937984A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Security type dual-sensing electronic scale |
| CN105937977A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Novel combined electronic scale |
| CN105937955A (en) * | 2016-01-20 | 2016-09-14 | 申俊 | Multifunctional combined electronic scale |
| CN105973383A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Safety electronic scale |
| CN105973403A (en) * | 2016-01-20 | 2016-09-28 | 申俊 | Dual-purpose dual-sensor electronic scale |
| CN105698905A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Sensor assembly |
| CN106248188A (en) * | 2016-09-07 | 2016-12-21 | 合肥三冠包装科技有限公司 | A kind of weighing circuit of six scale weighing instruments |
| CN106248190A (en) * | 2016-09-07 | 2016-12-21 | 合肥三冠包装科技有限公司 | A kind of four-head scale Weighing module and vibrations regulating circuit |
| CN106441542A (en) * | 2016-09-07 | 2017-02-22 | 合肥三冠包装科技有限公司 | Voltage regulating vibrator voltage regulating circuit for standard six-head weigher |
| CN106248190B (en) * | 2016-09-07 | 2018-09-14 | 合肥三冠包装科技有限公司 | A kind of four-head scale Weighing module and vibrations regulating circuit |
| CN106441542B (en) * | 2016-09-07 | 2019-02-01 | 合肥三冠包装科技有限公司 | A kind of pressure regulation vibrator regulating circuit of six scales of standard |
| CN106248188B (en) * | 2016-09-07 | 2019-02-01 | 合肥三冠包装科技有限公司 | A kind of weighing circuit of six scale weighing instruments |
| CN107941266A (en) * | 2016-10-13 | 2018-04-20 | 克朗斯股份公司 | Monitored using the cleaning for covering the progress of thing sensor |
| CN106404527A (en) * | 2016-11-22 | 2017-02-15 | 苏州达美特汽车测试技术有限公司 | Double-range force sensor for dynamic impact testing |
| CN107607251A (en) * | 2017-09-08 | 2018-01-19 | 上海工业自动化仪表研究院有限公司 | A kind of differential pressure or pressure transmitter with double-range |
| CN107607251B (en) * | 2017-09-08 | 2024-05-14 | 上海工业自动化仪表研究院有限公司 | Differential pressure or pressure transmitter with double measuring ranges |
| CN111122038A (en) * | 2019-12-27 | 2020-05-08 | 中联重科股份有限公司 | Sensor assembly, acting force detection device and method and engineering machinery |
| CN111122038B (en) * | 2019-12-27 | 2020-12-15 | 中联重科股份有限公司 | Sensor assembly, acting force detection device and method and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101666671B (en) | 2011-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101666671B (en) | Double range weighing sensor | |
| CN201255654Y (en) | Double-range weighing sensor | |
| CN101308051B (en) | Three-dimensional micro- force silicon micro- sensor | |
| CN101532817B (en) | Resistance strain gauge and sensor using resistance strain gauge to change stress transfer mode | |
| US20150096387A1 (en) | Low Profile Load Transducer | |
| CN101131335A (en) | Two-dimension force transducer with small measuring range | |
| CN104568279B (en) | A kind of multi-axis force transducer | |
| CN201255676Y (en) | Armored rope tension sensor | |
| CN102175137B (en) | Extensometer for measuring micro-deformation of component | |
| CN201251473Y (en) | Integrated self-supporting weighing sensor | |
| CN102230818A (en) | Double-C-shaped piezoelectric dynamic axle load sensor | |
| CN201389017Y (en) | Strain-type medical fetal heart pressure sensor | |
| CN102426049A (en) | Multi-shear-beam type weighing sensor | |
| CN203595545U (en) | Strain body, force transducer and metering device | |
| CN201724716U (en) | Kitchen scale | |
| CN102455229A (en) | High-precision sensor | |
| CN2932328Y (en) | Self-supported bridge-type weighing sensor | |
| CN101485514A (en) | Schoolbag with weight display | |
| CN203163840U (en) | High precision column type weighing sensor | |
| CN201122646Y (en) | Accumulator with checking device | |
| CN202339237U (en) | Elastomer of load sensor for oil field | |
| CN209945521U (en) | Electronic weighing apparatus weighing system based on independent weighing unit | |
| CN201637384U (en) | Transducer for measuring small displacement | |
| CN203323842U (en) | Parallel beam weighing sensor | |
| CN208075995U (en) | A kind of plane beam type weighing sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO KELI SENSING TECHNOLOGY CO., LTD. Free format text: FORMER NAME: NINGBO KELI ELECTRIC MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315033 Changxin, Zhejiang Province Investment Venture Park, Jiangbei District, C Road, No., No. 199 Patentee after: KELI SENSING TECHNOLOGY (NINGBO) Co.,Ltd. Address before: 315033 Changxin, Zhejiang Province Investment Venture Park, Jiangbei District, C Road, No., No. 199 Patentee before: Ningbo Keli Electric Manufacturing Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 |