CN2270225Y - High-precision strain type torque sensor - Google Patents
High-precision strain type torque sensor Download PDFInfo
- Publication number
- CN2270225Y CN2270225Y CN 96238424 CN96238424U CN2270225Y CN 2270225 Y CN2270225 Y CN 2270225Y CN 96238424 CN96238424 CN 96238424 CN 96238424 U CN96238424 U CN 96238424U CN 2270225 Y CN2270225 Y CN 2270225Y
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- China
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- current
- current collector
- output
- carbon brush
- voltage
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- Expired - Fee Related
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Abstract
The utility model relates to a high-precision strain type torque sensor, comprising an elastic rotating shaft with a strain gauge, a carbon brush type flow collector and a signal output device of the carbon brush type flow collector, wherein, the output end of the strain gauge fixedly arranged on the elastic rotating shaft is connected with the output end of the flow collector through a voltage-current converter. The utility model has the advantages of simple structure, convenient use and low manufacture cost and can obviously enhance the torque measuring precision.
Description
The utility model relates to the high precision strain-type torque sensor of performances such as a kind of stress that produces when measuring stationary axle or turning axle and being reversed and corner, and it is applicable to the measurement of the output shaft torque of various plant equipment.
At present, for the measurement of the output shaft torque of various plant equipment, often adopt torque sensor.General torque sensor comprises parts such as elasticity turning axle and current collector.When turning axle was subjected to torsional interaction, the strainometer that is attached on the turning axle produced distortion, and the electric bridge out of trim has the output of weak voltage signal, through current collector output signal is transformed on the fixing surveying instrument or strainmeter from turning axle.Existing current collector is divided into contact and contactless two classes.Contactless current collector mainly contains induction current collector and frequency type current collector.It is several that the contact current collector mainly contains stay-supported, carbon brush formula, mercury slot type etc., because of its structure is simpler, so use more at present.But the problem of contact current collector maximum is the contact resistance that exists between its fixed part and the rotating part, and this contact resistance is not constant, but along with the variation of temperature, contact pressure etc., changes in the larger context.Therefore, the signal that contact resistance changes certainly will mix with measuring-signal, brings very big error to measurement, influences measuring accuracy.
The purpose of this utility model provides a kind of high precision strain-type torque sensor, and it is simple in structure, and is easy to use, and low cost of manufacture can significantly improve the precision of torque measurement.
The purpose of this utility model is achieved in that this device comprises elasticity turning axle and carbon brush formula current collector and the signal output apparatus thereof that has strainometer, and the strainometer output terminal that wherein is packed on the elasticity turning axle joins by voltage-current converter and current collector output terminal.
Because the utility model has fundamentally changed traditional torque sensor signal output intent, with be connected in series between strainometer output terminal and the current collector output terminal one can be in the nominal torque scope outputting standard voltage of signals-current converter, the output of employing DC current, irrelevant with the contact resistance of current collector, so can effectively eliminate the non-constant contact resistance that exists between existing current collector fixed part and the rotating part, along with temperature, contact pressure change and change, to the error that torque measurement brings, significantly improve the precision of torque measurement.Because of this apparatus structure is simple, easy to use, low cost of manufacture is so be easy to apply.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a kind of concrete structure synoptic diagram of the utility model.
Fig. 2 is the cut-open view of Fig. 1 along the A-A line.
Describe concrete structure of the present utility model in detail according to Fig. 1-2.This device is improved on the architecture basics of the elasticity turning axle of existing torque sensor and contact current collector.It comprises elasticity turning axle 5 and install insulation sleeve 15, shading ring 8, copper guide pin bushing 9, voltage-current converter 7 on it, stick on a circumference symmetric position two strainometers 4, have fixedly outer shroud 2 and accessory power outlet 17 bearing 1, be assembled in the parts such as carbon brush 10 in the insulating frame 14.Wherein elasticity turning axle 5 utilizes bearing 6, the gland 3 that has a sealing gasket 16 is assembled in fixedly on the outer shroud 2.Carbon brush 10 utilizes pressure spring 11, regulate spiral shell inspection 12 contacts with copper guide pin bushing 9.Pressure between carbon brush 10 and the copper guide pin bushing 9 is adjusted by regulating bolt 12.On insulating frame 14 tops protective cover 13 is installed.Two strainometer 4 output terminals on the elasticity turning axle 5 join by voltage-current converter 7 and current collector output terminal 17, the voltage signal of strainometer 4 outputs is exported through the standard dc current signal that voltage-current converter 7 becomes 4-20mA, again through the copper guide pin bushing 9 of current collector, carbon brush 10, pressure spring 11, regulate the socket 17 of spiral shell inspection 12, output terminal, output signal is transformed on the surveying instrument instrument from turning axle, the output of employing two-wire system can record accurate moment of torsion.The output of this voltage-current converter 7 adopts standard moment to demarcate, the voltage signal that strainometer 4 is produced in the gamut scope is corresponding with the normalized current signal of signal output part, promptly when nominal torque is zero, output current is 4mA, when reaching nominal torque, output current is 20mA.Its electric current output is irrelevant with the contact resistance of current collector.Thereby realized the high-acruracy survey of measured axis moment of torsion or stress, corner.
During use, the elasticity turning axle 5 of this device is connected on the measured axis.When measured axis rotating band dynamic elasticity turning axle 5 is subjected to torsional interaction, the strainometer 4 that symmetry is pasted thereon produces distortion, be introduced into voltage-current converter 7 after the voltage signal output of its generation, after conversion, become the standard dc current signal output of 4-20mA, export through parts such as copper guide pin bushing 9, carbon brush 10, pressure spring 11, the adjusting bolt 12 that can be used as binding post, sockets 17 again, output signal is shown by surveying instrument that joins with socket or instrument at last, can obtain the moment of torsion or the torsion angle of measured axis.
Claims (3)
1, a kind of high precision strain-type torque sensor, comprise the elasticity turning axle and carbon brush formula current collector and the signal output apparatus thereof that have strainometer, the strainometer output terminal that it is characterized in that being packed on the elasticity turning axle joins by voltage-current converter and current collector output terminal.
2, sensor according to claim 1 is characterized in that voltage-current converter signal output part, and when nominal torque was zero, output current was 4mA, and when reaching nominal torque, output current is 20mA.
3, sensor according to claim 1 is characterized in that the carbon brush of current collector utilizes pressure spring to contact with the copper guide pin bushing with the adjusting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238424 CN2270225Y (en) | 1996-09-13 | 1996-09-13 | High-precision strain type torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238424 CN2270225Y (en) | 1996-09-13 | 1996-09-13 | High-precision strain type torque sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2270225Y true CN2270225Y (en) | 1997-12-10 |
Family
ID=33913723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238424 Expired - Fee Related CN2270225Y (en) | 1996-09-13 | 1996-09-13 | High-precision strain type torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2270225Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829909A (en) * | 2012-09-21 | 2012-12-19 | 北京科瑞思创测控科技有限公司 | Double-range torque sensor |
| CN107576428A (en) * | 2016-07-05 | 2018-01-12 | 北京新宇航世纪科技有限公司 | Torque sensing device assembly |
| KR101879236B1 (en) * | 2017-03-31 | 2018-07-17 | 주식회사 노아 엑츄에이션 | Torque measuring apparatus |
| CN109520650A (en) * | 2018-12-20 | 2019-03-26 | 蚌埠学院 | Rotation sensor of composite forces for high revolving speed equipment |
-
1996
- 1996-09-13 CN CN 96238424 patent/CN2270225Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829909A (en) * | 2012-09-21 | 2012-12-19 | 北京科瑞思创测控科技有限公司 | Double-range torque sensor |
| CN107576428A (en) * | 2016-07-05 | 2018-01-12 | 北京新宇航世纪科技有限公司 | Torque sensing device assembly |
| KR101879236B1 (en) * | 2017-03-31 | 2018-07-17 | 주식회사 노아 엑츄에이션 | Torque measuring apparatus |
| CN109520650A (en) * | 2018-12-20 | 2019-03-26 | 蚌埠学院 | Rotation sensor of composite forces for high revolving speed equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |