CN203551152U - Minitype tension sensor - Google Patents
Minitype tension sensor Download PDFInfo
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- CN203551152U CN203551152U CN201320669101.9U CN201320669101U CN203551152U CN 203551152 U CN203551152 U CN 203551152U CN 201320669101 U CN201320669101 U CN 201320669101U CN 203551152 U CN203551152 U CN 203551152U
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- sensor
- elastic body
- cover sheet
- resistance strain
- tapered end
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- 229920001971 elastomer Polymers 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 9
- 239000000806 elastomer Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a minitype tension sensor which comprises an elastomer, resistance strain gages, protection glue, a front and rear sensor protective cover plate, an upper and lower sensor protective cover plate, connecting locks and flexible wire ropes. The resistance strain gages are adhered to four sides of the elastomer, and a protection glue layer is applied to the outer surface of each resistance strain gage uniformly; a section of elastomer connecting stud is arranged at each end of the elastomer and connected with a lock threaded hole of each connecting lock; and a lock round hole in the other end of each connecting lock is connected with and compresses the corresponding flexible wire rope. The minitype tension sensor has the advantages of small size, light weight, large range, high precision and the like, and can be used for tension signal measurement of precise instruments in fields of aviation, spaceflight and the like under complex environment.
Description
Technical field
The utility model relates to a kind of pulling force sensor, relates in particular to a kind of miniature spring sensor.
Background technology
Pulling force sensor because its precision is high, measurement range is wide, the life-span is long, simple in structure, good frequency response, the advantage such as can work under mal-condition, be now widely used in the fields such as building, industry, robot, Aero-Space.Pulling force sensor is a kind of device that pulling force physical signalling is converted to electric signal output.Press elastomer structure and divide, the various structures such as that pulling force sensor has is board-like, beam type, shearing spoke type and doubly-linked cellular type, and along with new applied environment occurs, also at the pulling force sensor that occurs new flexible member shape.According to principle of work, pulling force sensor is divided into resistance-strain type, semiconductor pressure resistance type, condenser type, Hall-type, magnetostrictive effect formula, Fiber Bragg Grating FBG formula and quartz resonance etc.Wherein the pulling force sensor based on resistance-strain principle is the form most widely used in current various high precision pull sensor, technology is the most ripe.
The basic functional principle of resistance strain gauge drawing force transducer is: elastic body produces elastic deformation under external force, make to stick on its surperficial resistance strain gage in company with producing distortion, after resistance strain gage distortion, resistance will change, by corresponding metering circuit, this resistance variations is converted to electric signal again, thereby has completed the process that external power signal is transformed to electric signal.In resistance strain gauge drawing force transducer design process, the selection of foil gauge, stickup and protection are the basic guarantee of resistance strain gauge drawing force transducer performance.It is strictly corresponding by dynamometry that the position that resistance strain gage is pasted on elastic body should guarantee to bear with elastic body, and accomplish to make elastic body paster position to have higher strain level as far as possible.Equally, the selection of elastomeric material and the design of elastomer structure are also one of related gordian techniquies of resistance strain gauge drawing force transducer.For guaranteeing that sensor has the advantages such as range is large, precision is high, nonlinearity erron is little in application process, ideal mechanics sensor elastomeric material should have that high elastic limit, high fatigue limit, temperature coefficient of the elastic modulus are little, even tissue and isotropy after thermal treatment, thermal expansivity is little, the stagnant amount of elasticity is little, have the features such as good machining and heat treatment performance.
Be subject to the restriction of elastomeric material and application scenario, current pulling force sensor is difficult to meet wide range, undersized designing requirement simultaneously.And sensor is in design and use process, and the Nonlinear Error of Transducer that the factors including elastomeric material factor causes needs complicated compensating circuit to compensate, and has increased sensor design and use cost.
Utility model content
The purpose of this utility model is to provide the miniature spring sensor that a kind of range is large, size is little, precision is high, environmental suitability is strong.
The purpose of this utility model is achieved through the following technical solutions:
Miniature spring sensor of the present utility model; comprise measuring system and connected system; described measuring system comprises elastic body, resistance strain gage, protective rubber, sensor front and back cover sheet, the upper and lower cover sheet of sensor, and described connected system comprises connection tapered end and flexible wire ropes.
Described resistance strain gage sticks on its surface take the geometric center of described elastomeric four sides as benchmark respectively, and the outside surface of described resistance strain gage is evenly smeared one deck protective rubber;
Described elastic body is that cross section is foursquare long column body, its both ends of the surface have elastic body draw-in groove, and before and after described sensor, cover sheet and the upper and lower cover sheet of sensor are clamped in elastic body draw-in groove corresponding to described elastic body two ends by the cover sheet bayonet socket at its two ends;
The upper and lower cover sheet of described sensor center respectively has a hole, as the cable hole of sensor conductor;
Respectively there is one section of elastic body connecting stud at described elastomeric two ends, and the tapered end threaded hole that is connected respectively tapered end with two connects, and the tapered end circular hole of the described connection tapered end other end connects and compresses described flexible wire ropes.
The technical scheme being provided by above-mentioned the utility model can be found out, the miniature spring sensor that the utility model embodiment provides, resistance strain gage sticks on its surface take the geometric center of elastomeric four sides as benchmark respectively, respectively there is one section of elastic body connecting stud at elastomeric two ends, the tapered end threaded hole that is connected respectively tapered end with two connects, the tapered end circular hole that connects the tapered end other end connects and compresses described flexible wire ropes, there is size little, quality is light, range is large, precision advantages of higher, can be used for aviation, the field exact instrument such as space flight are in the measurement of complex environment lower pulling force signal.
Accompanying drawing explanation
Fig. 1 a overlooks three-dimensional structure schematic diagram for the miniature spring sensor that the utility model embodiment provides;
Fig. 1 b looks up three-dimensional structure schematic diagram for the miniature spring sensor that the utility model embodiment provides;
Fig. 2 a is the elastic body three-dimensional structure schematic diagram in the utility model embodiment;
Fig. 2 b is the elastic body active view in the utility model embodiment;
Fig. 2 c is the elastic body left view in the utility model embodiment;
Fig. 3 a is that before and after the sensor in the utility model embodiment, cover sheet is overlooked three-dimensional structure schematic diagram;
Fig. 3 b is that before and after the sensor in the utility model embodiment, cover sheet is looked up three-dimensional structure schematic diagram;
Fig. 4 a is that the upper and lower cover sheet of the sensor in the utility model embodiment is overlooked three-dimensional structure schematic diagram;
Fig. 4 b is that the upper and lower cover sheet of the sensor in the utility model embodiment is looked up three-dimensional structure schematic diagram;
Fig. 5 is that the connection tapered end in the utility model embodiment partly cuts open three-dimensional structure schematic diagram.
In figure: 1, elastic body, 2, resistance strain gage, 3, protective rubber; cover sheet before and after 4A, sensor; 4B, the upper and lower cover sheet of sensor, 5, connect tapered end, 6, flexible wire ropes; 7, cover sheet bayonet socket; 8, cable hole, 9, elastic body draw-in groove, 10, elastic body connecting stud; 11, tapered end circular hole, 12, tapered end threaded hole.
Embodiment
To be described in further detail the utility model embodiment below.
Miniature spring sensor of the present utility model, its preferably embodiment be:
Comprise measuring system and connected system, described measuring system comprises elastic body, resistance strain gage, protective rubber, sensor front and back cover sheet, the upper and lower cover sheet of sensor, and described connected system comprises connection tapered end and flexible wire ropes.
Described resistance strain gage sticks on its surface take the geometric center of described elastomeric four sides as benchmark respectively, and the outside surface of described resistance strain gage is evenly smeared one deck protective rubber;
Described elastic body is that cross section is foursquare long column body, its both ends of the surface have elastic body draw-in groove, and before and after described sensor, cover sheet and the upper and lower cover sheet of sensor are clamped in elastic body draw-in groove corresponding to described elastic body two ends by the cover sheet bayonet socket at its two ends;
The upper and lower cover sheet of described sensor center respectively has a hole, as the cable hole of sensor conductor;
Respectively there is one section of elastic body connecting stud at described elastomeric two ends, and the tapered end threaded hole that is connected respectively tapered end with two connects, and the tapered end circular hole of the described connection tapered end other end connects and compresses described flexible wire ropes.
Described elastomeric material is 3J40 elastic alloy.
Described resistance strain gage adopts 502 glue to stick on elastomeric four sides, and the protective rubber that described resistance strain gage outside surface is smeared is silica gel.
Before and after described sensor, cover sheet and the upper and lower cover sheet material of sensor are 65Mn or 60Si2MnA spring steel.
Before and after described sensor, cover sheet and the upper and lower cover sheet thickness of sensor are 1～2mm.
Miniature spring sensor of the present utility model, wide range, high precision, small size, lightweight, this miniature spring sensor can be used for the measurement of the field exact instrument such as Aeronautics and Astronautics at complex environment lower pulling force signal.
Principle of the present utility model is:
As shown in Fig. 1 a, 1b, elastic body is that cross section is foursquare cylinder, material is 3J40 elastic alloy, this material has that intensity is high, limit of elasticity is high, temperature coefficient of the elastic modulus is little and stable, the advantage such as the stagnant amount of elasticity is little, can realize sensor elastomer and realize and draw more greatly force measurement under less physical dimension, and range ability is large, nonlinearity erron is little.Under normal temperature environment, with 502 glue, resistance strain gage is sticked on to four side geometric centers of elastic body cylinder dependent variable maximum; to make up the deficiency that sensor output electrical signals is little as far as possible; after 502 glue natural coagulations of paster, along elastic body, circumferentially evenly smear one deck and cover completely the silicone protective layer of resistance strain gage; smear in process and make every effort to silicone protective layer as far as possible evenly, to reduce the impact of layer of silica gel on elastic body strain gradient.Before and after sensor, the upper and lower cover sheet of cover sheet and sensor relies on cover sheet bayonet socket and the micro-deformation of self of two ends file circle to be clamped in the elastic body draw-in groove of elastic body both ends of the surface.Sensor protection cover plate after four clampings forms an airtight cavity, and sensor is carried out to physical protection.Wherein, the upper and lower cover sheet of sensor center respectively has a hole, as the cable hole of sensor conductor.Elastic body two ends respectively have one section of elastic body connecting stud to connect with two tapered end threaded holes that are connected tapered end of connected system respectively, as the interface of sensor measuring system and connected system.The tapered end circular hole that connects the tapered end other end is used for clamping flexible wire ropes, and as the interface of sensor connected system and external environment condition, flexible wire ropes can well be realized flexibly connecting of sensor and measurement environment.
The utility model advantage is compared with prior art:
Sensor elastomer described in the utility model adopts 3J40 elastic alloy material, has overcome the shortcomings such as the little transducer range causing of existing pulling force sensor elastic body material therefor limit of elasticity is little, nonlinearity erron is large; Adopt 3J40 elastic alloy material can significantly reduce under the same conditions size and the quality of pulling force sensor simultaneously.Sensor connected system described in the utility model adopt flexible wire ropes as with the interface of external environment, increase the adaptive capacity to environment of sensor, sensor can be applied under the particular application such as magnetically levitated flywheel latch mechanism coupling mechanism force control.
Specific embodiment:
As shown in Fig. 1 a, 1b, this pulling force sensor is mainly comprised of measuring system and connected system, and measuring system comprises elastic body 1, resistance strain gage 2, protective rubber 3, cover sheet 4A and the upper and lower cover sheet 4B of sensor before and after sensor; Connected system comprises connection tapered end 5 and flexible wire ropes 6.Elastic body 1 is that cross section is foursquare cylinder; its four sides are used for adhering resistance strain sheets 2; two sides have four elastic body draw-in grooves 9; be used for being fixedly clamped cover sheet 4A and the upper and lower cover sheet 4B of sensor before and after sensor, elastic body 1 two ends respectively have one section of elastic body connecting stud 10 to be used for same connected system to connect.Resistance strain gage 2 sticks on respectively in the geometric center of 1 four sides of elastic body by 502 glue.Paster completes and after glue natural coagulation; adopt silica gel as protective rubber 3; along resistance strain gage 2, evenly spread upon the surface of 1 four sides of elastic body, silica gel protected layer thickness is made every effort to even and is guaranteed that the rear silicone protective layer of the normal assembling of sensor can not touch sensor front and back cover sheet 4A and the upper and lower cover sheet 4B of sensor.Before and after sensor, the cover sheet bayonet socket 7 use files at cover sheet 4A and the upper and lower cover sheet 4B of sensor two ends are filed after circle; be clamped in the elastic body draw-in groove 9 of elastic body 1 both ends of the surface; after assembling, guarantee that four sensor protection cover plates form an airtight cavity; prevent the mechanical damage of external environment condition to sensor, sensor is carried out to physical protection.Sensor conductor is drawn by the cable hole 8 at the upper and lower cover sheet 4B of sensor center.The elastic body connecting stud 10 at elastic body 1 two ends is connected respectively tapered end 5 tapered end threaded hole 12 with two of connected systems connects, and relying on is threaded realizes the energy exchange of sensor measuring system and connected system.The tapered end circular hole 11 that connects tapered end 5 other ends connects flexible wire ropes 6, with realizing flexibly connecting of sensor and external environment by flexible wire ropes 6 after clamp compression tapered end circular hole 11.
Fig. 2 is the be hit by a bullet three-dimensional structure schematic diagram of gonosome 1 of the utility model.Its material is 3J40 elastic alloy, and two ends respectively have one section of elastic body connecting stud 10 to be used for forming and being threaded with the tapered end threaded hole 12 that is connected tapered end 5.Elastic body 1 both ends of the surface have four elastic body draw-in grooves 9 in order to clamp sensor front and back cover sheet 4A and the upper and lower cover sheet 4B of sensor.
Fig. 3 a be in the utility model before and after sensor cover sheet 4A overlook three-dimensional structure schematic diagram, Fig. 3 b be in the utility model before and after sensor cover sheet 4A look up three-dimensional structure schematic diagram, its material is spring steel 65Mn or 60Si2MnA.After the cover sheet bayonet socket 7 at cover sheet 4A two ends before and after sensor being filed to circle with file in installation process, be clamped in the elastic body draw-in groove 9 of elastic body 1 end face, finally rely on cover sheet self micro-deformation to maintain the pretension between cover sheet bayonet socket 7 and elastic body draw-in groove 9.
Fig. 4 a be in the utility model the upper and lower cover sheet 4B of sensor overlook three-dimensional structure schematic diagram, Fig. 4 b be in the utility model the upper and lower cover sheet 4B of sensor overlook three-dimensional structure schematic diagram.Its material is 65Mn or 60Si2MnA spring steel, and center has cable hole 8, coordinates an airtight cavity of formation to carry out physical protection to sensor with cover sheet 4A before and after sensor.In installation process, with file, the cover sheet bayonet socket 7 at upper and lower sensor cover sheet 4B two ends is filed after circle; be clamped in the elastic body draw-in groove 9 of elastic body 1 end face, finally rely on cover sheet self micro-deformation to maintain the pretension between cover sheet bayonet socket 7 and elastic body draw-in groove 9.
Fig. 5 be in the utility model, connect tapered end 5 partly cut open three-dimensional structure schematic diagram, its material is plain carbon steel or alloy steel, the tapered end threaded hole 12 at two ends is connected with elastic body connecting stud 10 and the flexible wire ropes 6 of elastic body 1 respectively with tapered end circular hole 11, the pulling force signal of measurement environment is passed to elastic body 1, realize the transmission of measurement environment to energy between flexible member.
In a word, miniature spring sensor described in the utility model can meet the accurate measurement of the special dimensions such as exact instrument, Aero-Space, particular surroundings lower pulling force signal.Sensor described in the utility model has the advantages such as simple in structure, quality is light, range is large, nonlinearity erron is little.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. a miniature spring sensor, comprise measuring system and connected system, it is characterized in that, described measuring system comprises elastic body, resistance strain gage, protective rubber, sensor front and back cover sheet, the upper and lower cover sheet of sensor, and described connected system comprises connection tapered end and flexible wire ropes;
Described resistance strain gage sticks on its surface take the geometric center of described elastomeric four sides as benchmark respectively, and the outside surface of described resistance strain gage is evenly smeared one deck protective rubber;
Described elastic body is that cross section is foursquare long column body, its both ends of the surface have elastic body draw-in groove, and before and after described sensor, cover sheet and the upper and lower cover sheet of sensor are clamped in elastic body draw-in groove corresponding to described elastic body two ends by the cover sheet bayonet socket at its two ends;
The upper and lower cover sheet of described sensor center respectively has a hole, as the cable hole of sensor conductor;
Respectively there is one section of elastic body connecting stud at described elastomeric two ends, and the tapered end threaded hole that is connected respectively tapered end with two connects, and the tapered end circular hole of the described connection tapered end other end connects and compresses described flexible wire ropes.
2. miniature spring sensor according to claim 1, is characterized in that, described elastomeric material is 3J40 elastic alloy.
3. miniature spring sensor according to claim 1, is characterized in that, described resistance strain gage adopts 502 glue to stick on elastomeric four sides, and the protective rubber that described resistance strain gage outside surface is smeared is silica gel.
4. miniature spring sensor according to claim 1, is characterized in that, described sensor front and rear cover plate and sensor upper and lower cover plates material are 65Mn or 60Si2MnA spring steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669101.9U CN203551152U (en) | 2013-10-28 | 2013-10-28 | Minitype tension sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669101.9U CN203551152U (en) | 2013-10-28 | 2013-10-28 | Minitype tension sensor |
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| Publication Number | Publication Date |
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| CN203551152U true CN203551152U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320669101.9U Expired - Fee Related CN203551152U (en) | 2013-10-28 | 2013-10-28 | Minitype tension sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528725A (en) * | 2013-10-28 | 2014-01-22 | 北京石油化工学院 | Minitype tension sensor |
| CN105136086A (en) * | 2015-07-22 | 2015-12-09 | 同济大学 | Composite structure interlayer contact state measurement sensor |
| CN106370137A (en) * | 2016-10-08 | 2017-02-01 | 郑州神利达钻采设备有限公司 | Abrasion-resistance sensor applied to mining industry |
| CN110778340A (en) * | 2019-09-18 | 2020-02-11 | 中国矿业大学(北京) | Steel arch strain gauge embedded structure and construction method thereof |
-
2013
- 2013-10-28 CN CN201320669101.9U patent/CN203551152U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528725A (en) * | 2013-10-28 | 2014-01-22 | 北京石油化工学院 | Minitype tension sensor |
| CN105136086A (en) * | 2015-07-22 | 2015-12-09 | 同济大学 | Composite structure interlayer contact state measurement sensor |
| CN106370137A (en) * | 2016-10-08 | 2017-02-01 | 郑州神利达钻采设备有限公司 | Abrasion-resistance sensor applied to mining industry |
| CN110778340A (en) * | 2019-09-18 | 2020-02-11 | 中国矿业大学(北京) | Steel arch strain gauge embedded structure and construction method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20191028 |