CN204202812U - The caliberating device of simple and easy force cell - Google Patents
The caliberating device of simple and easy force cell Download PDFInfo
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- CN204202812U CN204202812U CN201420691826.2U CN201420691826U CN204202812U CN 204202812 U CN204202812 U CN 204202812U CN 201420691826 U CN201420691826 U CN 201420691826U CN 204202812 U CN204202812 U CN 204202812U
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- growing crosswise
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Abstract
A caliberating device for simple and easy force cell, belongs to mechanical test technical field.It is characterized in that: comprise base (12), location montant (9), vertical supporting rod (11), the second carrying cross bar (6), the first carrying montant (5), lever of growing crosswise (3), sensor gland (1), counterweight hook (4); Above-mentioned counterweight hook (4) is fixed on the right-hand member of lever of growing crosswise (3), sensor gland (1) is fixed on lever of growing crosswise (3), the right-hand member of above-mentioned lever of growing crosswise (3) is L1 to the distance of sensor gland (1), left end is L2 to the distance of sensor gland (1), and wherein L1 is greater than L2.What the utility model utilized is lever principle, and structural design is simple, easy to operate, can facilitate and demarcate large range stress sensor accurately.
Description
Art
The utility model relates to the caliberating device of the simple and easy force cell of a kind of one directional tensile test machine.Belong to mechanical test technical field.
Background technology
One directional tensile test machine is the common equipment measuring material mechanical performance, comprise the elastic modulus, yield strength, tensile strength, extensibility etc. of measuring material, in order to obtain these mechanics parameters of material accurately, high-precision one directional tensile test machine sensor is extremely important, and the use of high-precision sensor depends on and accurately, easily demarcates it.Error during sensor measurement uses comprises stochastic error and systematic error, and stochastic error causes primarily of factors such as internal signal treatment circuit, quantization error, external interference; Systematic error determined primarily of the stated accuracy of calibration system.Want Measurement accuracy, first must ensure at timing signal, the applying that acting force can be stable on a sensor, and reduces environment to the effect of the additional perturbed force of sensor as far as possible.
Demarcating force cell usual way is utilize standard test weight to be directly carried on force snesor, sensor senses is subject to the pulling force of counterweight, produce signal and output to signal conditioner, being exported the measured value corresponding to standard test weight by data acquisition unit, calculate the error of sensor thus.This directly with the scaling method of grade counterweight as benchmark, force value precision is higher, use commonplace in the demarcation of the force snesor of small-range, if but it is then more difficult to be used for the force cell of the relatively large journey of calibration, need a large amount of standard test weights on the one hand, directly be carried in bad placement on force snesor, manual operations is got up very difficult, and calibration result also can be very inaccurate.
Summary of the invention
Directly be carried on force snesor with standard test weight and demarcate, when the transducer range demarcated is larger, manual operations is got up more difficult, and calibration precision is difficult to ensure.In order to the standard test weight solved for one-way stretcher large range stress sensor directly demarcate in difficulty in the operation that brings and inaccurate, the utility model of the application provides a kind of easily for the weight calibrating device of one directional tensile test machine large range stress sensor.
A caliberating device for simple and easy force cell, is characterized in that: comprise base, location montant, vertical supporting rod, the second carrying cross bar, the first carrying montant, lever of growing crosswise, sensor gland, counterweight hook; Above-mentioned counterweight hook is fixed on the right-hand member of lever of growing crosswise, sensor gland is fixed on grows crosswise on lever, the left end of lever of growing crosswise is fixed on the upper end of the first carrying montant, the lower end of the first carrying montant is fixed on the left end of the second carrying cross bar, the right-hand member of the second carrying cross bar is fixed on the upper end of vertical supporting rod, and the middle part of the second carrying cross bar is fixed on the upper end of location montant; Location montant and vertical supporting rod are fixed on base; The right-hand member of above-mentioned lever of growing crosswise is L1 to the distance of sensor gland, and left end is L2 to the distance of sensor gland, and wherein L1 is greater than L2.
The utility model uses lever balance theory, this principle of device is analyzed as follows: lever of growing crosswise is connected by straight pin with sensor gland, this straight pin is the fulcrum of lever, the pulling force be subject to linked up with by counterweight is F1, to be subject to downward pulling force be F2 in first carrying montant upper end, and the right-hand member of lever of growing crosswise is L1 to the distance of sensor gland, and left end is L2 to the distance of sensor gland, the power that sensor is subject to is F, has according to lever principle:
F1*L1=F2*L2 (1)
So F=F1+F2=F1* (L1/L2+1) (2)
It is the sensor of F1* (L1/L2+1) that the counterweight of such F1 size just can be used for calibration range, by lever balance theory, effect power is on a sensor amplified (L1/L2+1) doubly, namely the counterweight of lightweight just can be used for the larger sensor of calibration range.This device has following beneficial effect:
1, precision is high
For the pulling force sensor that range is larger, we can accomplish to load the pulling force on a sensor range close to it completely, namely close to range designation, and direct caliberating device in the past, cannot accomplish close to range designation for this sensors of large measurement range, cannot demarcate accurately, and this lever caliberating device is passable.
2, easy to operate
In the past for the pulling force sensor that range is larger, need the counterweight weight of extension large, volume was also larger, operated very difficult, and this device then needing the counterweight weight of hanging to reduce (L1/L2+1) doubly, operates very easy.
3, the linearity is consistent
When counterweight hook loads counterweight, due to force snesor with connect long lever connector be directly contact, when therefore loading the weight increase of counterweight or reduce, the pulling force that sensor bears is all the weight of the counterweight after amplification (L1/L2+1) doubly.
What the utility model utilized is lever principle, and structural design is simple, easy to operate, can facilitate and demarcate large range stress sensor accurately.
Can also setting height(from bottom) adjusting bolt below above-mentioned base.
Accompanying drawing explanation
Fig. 1 is the front elevation of one directional tensile test machine sensor calibration apparatus; Label title in figure: 1. sensor gland 2. first cylindrical pins 3. lever 4. counterweight hook 5. first carrying montants 6. second of growing crosswise carry cross bar 7. second cylindrical pins 8. three cylindrical pins 9. and locate montant 10. the 4th cylindrical pins 11. vertical supporting rod 12. base 13. height adjustment bolt 14. vertical supporting rod set bolt 15 and locate montant set bolt.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural front view of the present utility model, wherein 1 is the gland connecting pulling force sensor, 2 for locating the register pin of grow crosswise lever and sensor gland, 3 is lever of growing crosswise, 4 is counterweight hook, 5 is the first carrying montant, 6 is the second carrying cross bar, 9 is the location montant that location second carries cross bar 6, 11 is the vertical supporting rod that support second carries montant 6, 12 is base, lever 3 and second of wherein growing crosswise is carried between montant 5 and is connected by straight pin 7, first carrying montant 5 and second is carried cross bar 6 and is connected by straight pin 8, location montant 9 locates the second carrying cross bar 6 by pin 10, location montant 9 is fixed by bolt 15 and base 12, vertical supporting rod 11 is fixed by bolt 14 and base 12, bolt 13 can be used for adjusting the height of base.
The calibration process of one directional tensile test machine sensor: first according to the range of the sensor that will demarcate, calculates the weight probably needing standard test weight, prepares to demarcate the standard test weight needed; Secondly caliberating device is placed on one directional tensile test machine operator's console, fix the height with adjustment base by bolt of lower base, the force snesor gland of sensor and caliberating device upper end is threaded connection; After whole device all connects, add the standard test weight of the same accuracy class of fixed intervals weight below hook successively, the signal of record Different Weight moment sensor circuit exports situation; After reaching range, then reduce counterweight to zero successively.According to the calibration principle of sensor, repeatedly draft calibration curve after duplicate measurements, complete the staking-out work of this sensor.
Claims (2)
1. a caliberating device for simple and easy force cell, is characterized in that:
Comprise base (12), location montant (9), vertical supporting rod (11), the second carrying cross bar (6), the first carrying montant (5), lever of growing crosswise (3), sensor gland (1), counterweight hook (4);
Above-mentioned counterweight hook (4) is fixed on the right-hand member of lever of growing crosswise (3), sensor gland (1) is fixed on lever of growing crosswise (3), the left end of lever (3) of growing crosswise is fixed on the upper end of the first carrying montant (5), the lower end of the first carrying montant (5) is fixed on the left end of the second carrying cross bar (6), the right-hand member of the second carrying cross bar (6) is fixed on the upper end of vertical supporting rod (11), and the middle part of the second carrying cross bar (6) is fixed on the upper end of location montant (9); Location montant (9) and vertical supporting rod (11) are fixed on base (12); The right-hand member of above-mentioned lever of growing crosswise (3) is L1 to the distance of sensor gland (1), and left end is L2 to the distance of sensor gland (1), and wherein L1 is greater than L2.
2. the caliberating device of simple and easy force cell according to claim 1, is characterized in that: above-mentioned base (12) below is provided with height adjustment bolt (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691826.2U CN204202812U (en) | 2014-11-18 | 2014-11-18 | The caliberating device of simple and easy force cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420691826.2U CN204202812U (en) | 2014-11-18 | 2014-11-18 | The caliberating device of simple and easy force cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202812U true CN204202812U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420691826.2U Expired - Fee Related CN204202812U (en) | 2014-11-18 | 2014-11-18 | The caliberating device of simple and easy force cell |
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| CN (1) | CN204202812U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300594A (en) * | 2015-11-12 | 2016-02-03 | 西安航空动力股份有限公司 | Calibration device and calibration method of tension sensor |
| CN106289998A (en) * | 2016-07-29 | 2017-01-04 | 江西洪都航空工业集团有限责任公司 | A kind of easy device of testing young modulus of material |
| CN109883611A (en) * | 2019-03-14 | 2019-06-14 | 上海交通大学 | A kind of easy force sensor caliberating device and method |
| CN110411653A (en) * | 2019-07-16 | 2019-11-05 | 西南交通大学 | A kind of railway vehicle coupler power static demarcating method |
| CN110836748A (en) * | 2019-11-27 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Engine blade static torque meter calibration system and calibration method |
-
2014
- 2014-11-18 CN CN201420691826.2U patent/CN204202812U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300594A (en) * | 2015-11-12 | 2016-02-03 | 西安航空动力股份有限公司 | Calibration device and calibration method of tension sensor |
| CN106289998A (en) * | 2016-07-29 | 2017-01-04 | 江西洪都航空工业集团有限责任公司 | A kind of easy device of testing young modulus of material |
| CN109883611A (en) * | 2019-03-14 | 2019-06-14 | 上海交通大学 | A kind of easy force sensor caliberating device and method |
| CN110411653A (en) * | 2019-07-16 | 2019-11-05 | 西南交通大学 | A kind of railway vehicle coupler power static demarcating method |
| CN110836748A (en) * | 2019-11-27 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Engine blade static torque meter calibration system and calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |