CN203116823U - Circular plate type weighing sensor - Google Patents
Circular plate type weighing sensor Download PDFInfo
- Publication number
- CN203116823U CN203116823U CN 201220725059 CN201220725059U CN203116823U CN 203116823 U CN203116823 U CN 203116823U CN 201220725059 CN201220725059 CN 201220725059 CN 201220725059 U CN201220725059 U CN 201220725059U CN 203116823 U CN203116823 U CN 203116823U
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- strain
- circular plate
- plate type
- weighing sensor
- type weighing
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Abstract
The utility model relates to a circular plate type weighing sensor. The circular plate type weighing sensor comprises a centrally-projected elastic body, compensation sheets, strain gauges connected with a Wheatstone bridge and a cable. The circular plate type weighing sensor is characterized in that a bottom portion of the elastic body is provided with a semi-through inverted-cone strain hole of which a mouth portion is in a contraction mode, strain zones which are used for bonding the strain gauges and the compensation sheets are formed at an upper bottom face of the inverted-cone strain hole, an upper end face of the elastic body is provided with a conical circular plate having uneven thickness, and the conical circular plate forms an equal strain zone at an upper bottom face of the inverted-cone strain hole. The circular plate type weighing sensor provides an improvement method for structure and technology design, can make a small-profile sensor have a maximum measuring range, can improve inherent linearity and lagging characteristics through adjustment and greatly improves test precision, so application and applicability of the circular plate type weighing sensor in various metering industries are developed.
Description
Technical field
The utility model relates to sensor field, especially a kind of circular plate type LOAD CELLS.
Background technology
The circular plate type LOAD CELLS is simple and compact for structure because of it, and volume is little, highly low; Anti-side load and eccentric load ability are stronger; Be convenient to characteristics such as exclusion seal and processing, be widely used in material and irritate metering occasions such as scale, axle weight scale.The circular plate type LOAD CELLS is the radial stress that produces when utilizing circular plate bending, but during conventional circular plate type structure bearing load, positive and negative radial strain value differs bigger, and strainometer to paste district's strain inhomogeneous, this causes the intrinsic linearity of sensor relatively poor.Simultaneously, straight type paster hole circle plate recovery capability after deformation takes place is relatively poor, and it is bigger to cause sensor to lag behind.This has greatly limited the application of circular plate type structure LOAD CELLS, need make research and improvement.
Summary of the invention
Technical problem to be solved in the utility model is a kind of measuring accuracy height, intrinsic good linearity to be provided and to lag behind little a kind of circular plate type LOAD CELLS at the above-mentioned state of the art.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of circular plate type LOAD CELLS, comprise that a middle part is the elastic body of convex, compensating plate, cable is taken into account in the strain that is connected with Wheatstone bridge, it is characterized in that: described elastomeric bottom offer partly run through and oral area be contraction-like back taper strain bore, the upper bottom surface of described back taper strain bore forms for the strain regions of pasting strainometer and compensating plate, described elastomeric upper surface is provided with the taper plectane of equal thickness not, by the strain regions such as upper bottom surface formation of taper plectane at the back taper strain bore.
As improvement, the described strain regions that waits is pasted with strainometer symmetrically at the strain regions of the lowest point of taper plectane.
Preferably, described strainometer is 4 pairs and be evenly distributed in etc. on the formed circumference of strain regions.
As improvement, described compensating plate is pasted on the normal strain district.
As improvement, described elastomeric bottom is provided with a cover plate corresponding with the opening of back taper strain bore, is welded to connect, and is distributed with equably for the threaded hole that the location is installed on the circumference of elastic body bottom, is fixedly installed in the application apparatus by screw.
Compared with prior art, advantage of the present utility model is: since elastomeric bottom offer partly run through and oral area be contraction-like back taper strain bore, the upper bottom surface of back taper strain bore forms for the strain regions of pasting strainometer and compensating plate, the big end of back taper strain bore is anchor ring and props up admittedly, admittedly prop up friction force and reduce to lag behind to improve, improve the recovery after the sensor deformation; Elastomeric upper surface is provided with the taper plectane of equal thickness not, by the strain regions such as upper bottom surface capable one-tenth of taper plectane at the back taper strain bore, to guarantee the symmetry substantially of positive and negative radial strain value; This design provides a kind of structure and technological design to improve the method for measure, little profile transducer range can be done to maximum, can improve intrinsic linearity and hysteresis characteristic by adjusting simultaneously, improve the measuring accuracy of circular plate type structure LOAD CELLS greatly, thereby expanded application and the applicability of circular plate type structure sensor in various metering industries.
Description of drawings
Fig. 1 is the upward view of the utility model embodiment one;
Fig. 2 is the cut-open view of the utility model embodiment one;
Fig. 3 is the upward view of the utility model embodiment two;
Fig. 4 is the cut-open view of the utility model embodiment two.
Embodiment
Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.
Embodiment one: as shown in Figure 1, 2, a kind of circular plate type LOAD CELLS, comprise strainometer 3 and cable that a middle part is the right cylinder elastic body 1 of convex, compensating plate 2, is connected with Wheatstone bridge, the bottom of elastic body 1 offer partly run through and oral area be contraction-like back taper strain bore 4, the upper bottom surface 5 of back taper strain bore 4 forms for pasting the strain regions of strainometer 3 with compensating plate 2, the anchor ring that the upper bottom surface 5 of elastic body 1 forms oral area simultaneously props up admittedly, to strengthen solid friction force, the recovery capability after the deformation of raising sensor; The upper surface of elastic body 1 is provided with the taper plectane 6 of equal thickness not, by the strain regions such as upper bottom surface 5 formation of taper plectane 6 at back taper strain bore 4, be pasted with strainometer 3 Deng strain regions in the lowest point symmetry of taper plectane 6, strainometer 3 also can be the symmetric form ring-type strainometer of loop configuration, this example is attached at etc. on the formed circumference of strain regions equably by representational 4 pairs, be that a slice is pasted on the normal strain district, Dui Ying another sheet is pasted on the negative strain district with it, to guarantee the symmetry substantially of positive and negative radial strain value, strain ga(u)ge is operated in uniform strain regions simultaneously, and cable links to each other with strainometer 3 by data line; Compensating plate 3 is affixed on the normal strain district, experience normal strain, and be connected in the Wheatstone bridge, thereby the deformation characteristic that utilizes compensating plate 2 is adjusted the intrinsic linearity of sensor, be welded with a cover plate 7 corresponding with the opening of back taper strain bore 4 in the bottom of elastic body 1, thereby sealing is strengthened, and is uniformly distributed with three threaded holes 8 that are used for installing the location on the bottom circumference of elastic body 1, is fixedly installed in the application apparatus by screw.
Embodiment two: shown in Fig. 3,4, be with the difference of embodiment one: intermediate projections position and the taper plectane 6 of elastic body 1 are other shapes.
Finally by adjustment and the linear compensation technology of above elastic body 1 pyramidal structure, realize the improvement of the intrinsic linearity of circular plate type LOAD CELLS and hysteretic properties, satisfy high precision circular plate type demand sensor, expand the application of circular plate type sensor.
Claims (5)
1. circular plate type LOAD CELLS, comprise that a middle part is the elastic body of convex, compensating plate, cable is taken into account in the strain that is connected with Wheatstone bridge, it is characterized in that: described elastomeric bottom offer partly run through and oral area be contraction-like back taper strain bore, the upper bottom surface of described back taper strain bore forms for the strain regions of pasting strainometer and compensating plate, described elastomeric upper surface is provided with the taper plectane of equal thickness not, by the strain regions such as upper bottom surface formation of taper plectane at the back taper strain bore.
2. a kind of circular plate type LOAD CELLS according to claim 1 is characterized in that: the described strain regions that waits is pasted with strainometer symmetrically at the strain regions of the lowest point of taper plectane.
3. a kind of circular plate type LOAD CELLS according to claim 2 is characterized in that: described strainometer is 4 pairs and be evenly distributed in etc. on the formed circumference of strain regions.
4. a kind of circular plate type LOAD CELLS according to claim 1, it is characterized in that: described compensating plate is pasted on the normal strain district.
5. a kind of circular plate type LOAD CELLS according to claim 1, it is characterized in that: described elastomeric bottom is provided with a cover plate corresponding with the opening of back taper strain bore, be welded to connect, and be distributed with equably for the threaded hole that the location is installed on the circumference of elastic body bottom, be fixedly installed in the application apparatus by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725059 CN203116823U (en) | 2012-12-25 | 2012-12-25 | Circular plate type weighing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220725059 CN203116823U (en) | 2012-12-25 | 2012-12-25 | Circular plate type weighing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203116823U true CN203116823U (en) | 2013-08-07 |
Family
ID=48897159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220725059 Expired - Lifetime CN203116823U (en) | 2012-12-25 | 2012-12-25 | Circular plate type weighing sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203116823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931118A (en) * | 2014-03-21 | 2015-09-23 | 梅特勒-托利多(常州)精密仪器有限公司 | Strain weighing sensor and lag compensation method thereof |
-
2012
- 2012-12-25 CN CN 201220725059 patent/CN203116823U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931118A (en) * | 2014-03-21 | 2015-09-23 | 梅特勒-托利多(常州)精密仪器有限公司 | Strain weighing sensor and lag compensation method thereof |
| CN104931118B (en) * | 2014-03-21 | 2017-07-28 | 梅特勒-托利多(常州)精密仪器有限公司 | Strain gauge load cell and its lag compensation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
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| CX01 | Expiry of patent term |