CN201772856U - Pull wire type linear displacement sensor - Google Patents
Pull wire type linear displacement sensor Download PDFInfo
- Publication number
- CN201772856U CN201772856U CN2010202987072U CN201020298707U CN201772856U CN 201772856 U CN201772856 U CN 201772856U CN 2010202987072 U CN2010202987072 U CN 2010202987072U CN 201020298707 U CN201020298707 U CN 201020298707U CN 201772856 U CN201772856 U CN 201772856U
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- reel
- potentiometer
- guide sleeve
- housing
- spring
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Abstract
The utility model provides a pull wire type linear displacement sensor. A steel wire is wound on a reel and is connected with a pothook by a through hole on the shell. An input shaft of a potentiometer is fixedly connected with a shaft of the reel. A guide sleeve seat and a guide sleeve are fixed between the external surface of the upper end of the shell of the reel component and the pothook; and the inner hole of a rubber joint and the inner hole of the guide sleeve are homocentric with the inner hole of an outlet end of the guide sleeve seat and are overlapped with the starting end of the steel wire which is wound of the reel. A reversely-wound S-shaped clockwork spring is arranged in a spring cover, is fixed at one side of the shell of the reel component, and is sheathed on the shaft of the reel. The potentiometer is arranged in the shell of the potentiometer, and is fixed at the other side of the shell of the reel component. The two side walls of the shell of the reel component are provided with an installing hole of a deep groove ball bearing, wherein the installing holes are coaxial with the axle hole of the reel. The pull wire type linear displacement sensor is high in precision, good in wear resistance of the pull wire, easy to disassemble and maintain, is strong in impact resistance, and comprises a signal conditioning circuit.
Description
Technical field
The present invention relates to sensor field, specifically is a kind of linear movement pick-up of Displacement Measurement.
Background technology
In daily life, no matter be dimensional measurement or track following, all need to use linear movement pick-up; Chang Yong linear movement pick-up is divided into wireless type and two kinds of forms of wired formula in the market, wherein the wireless type linear movement pick-up on the market is to serve as the principle form of typical case's representative with laser, sound wave, its major advantage is that measurement range is big, digital quantity is directly exported, make things convenient for the collection aftertreatment of data, and its shortcoming is a poor anti jamming capability, and bigger as little displacement measurement time error, precision is low during real time dynamic measurement, versatility is poor, the price height.And the linear movement pick-up of wired formula mostly is resistance-type, condenser type, inductance type principle form on the market, it mainly relies on the linear corresponding relation between physical quantitys such as displacement and output voltage, electric current to carry out displacement measurement, and it has advantages such as precision height, versatility be good.
The prior art structure analysis: stay-supported linear movement pick-up in the market mostly is single one-piece construction, be that elements such as reel, spring, potentiometer, wiring board are installed in same housing, in case the component wear unloading process is very complicated, keep in repair very inconvenient and manufacturing cost is expensive; Stay-supported linear movement pick-up on the market also ubiquity cause that amount of tension and angle input ratio changes, thereby the displacement that can not accurately measure testee has reduced measuring accuracy because of the unreasonable backguy wire rope that causes of spring design superposes on reel; In addition, stay-supported linear movement pick-up is not in the market generally taked heat dissipation technology, and the very big measuring accuracy that causes of thermal value descends when the stay-supported sensor works long hours, and backguy export mouth gap is bigger in addition, backguy easily is offset, and foreign matter is easily crammed in the backguy outlet.
Summary of the invention
For overcome exist in the prior art or measuring accuracy low, perhaps maintenance difficult, perhaps backguy easily is offset, and the backguy outlet deficiency of easily being crammed by foreign matter, the present invention proposes a kind of stay-supported linear movement pick-up.
The present invention includes hook, steel wire, reel, spring, potentiometer, wiring board, winding wheel shaft, bearing and housing; Steel wire is wrapped on the reel, and is connected with hook by the through hole on the housing; The input shaft of potentiometer is fixedlyed connected with winding wheel shaft, and is connected with circuit board by lead.The invention is characterized in that described stay-supported linear movement pick-up also comprises orienting sleeve, guide sleeve seat, spring shield and potentiometer housing.Between reel assembly housing upper end outside surface and hook, be fixed with guide sleeve seat, orienting sleeve and elastomer connector, and the endoporus of the endoporus of elastomer connector, the endoporus of orienting sleeve and guide sleeve seat endpiece is concentric, and overlaps with the initiating terminal of steel wire on being wrapped in reel.Spring adopts constant force warp S type clockwork spring.Steel wire is wrapped on the reel, and is connected with hook by the through hole of reel assembly housing upper end.Spring shield and potentiometer housing symmetry be fixed on reel assembly housing both sides.Constant force warp S type clockwork spring is positioned at spring shield and is sleeved on the winding wheel shaft.Winding wheel shaft is fixed on the reel assembly housing, and the two ends of this winding wheel shaft lay respectively in spring shield and the potentiometer housing.Potentiometer is positioned at the potentiometer housing; The input shaft of potentiometer is fixedlyed connected with winding wheel shaft, and is connected with circuit board by lead.
One end of described spring is fixed in the draw-in groove of winding wheel shaft upper end, and the other end of warp S type clockwork spring is fixed on the interior tommy of spring shield.
The endoporus of described guide sleeve seat is divided into mutual perforation but two sections of decentraction, be eccentric orfice at the endoporus of guide sleeve seat endpiece, and this eccentric orfice is concentric with elastomer connector.
One end of described guide sleeve seat is fixed on reel assembly housing upper end outside surface, and the guide sleeve seat other end and orienting sleeve are connected.
The aperture of described orienting sleeve endoporus is slightly larger than the external diameter of steel wire, and steel wire can be passed from this hole; Orienting sleeve is installed in the eccentric orfice of guide sleeve seat endpiece; Orienting sleeve one end end face contacts with elastomer connector 2;
11 radially outstanding boss are arranged on the annular wall of described collar, and the axial length of boss is slightly less than the axial length of collar, forms elastic wall with this; Collar be installed in the annular groove of winding wheel shaft 24 and with the axis hole interference fit of reel.
Described have a waterproof external connector on the potentiometer housing; There is O-ring seal potentiometer housing and reel assembly housing junction.
The present invention adopts the split structural design, and in three critical piece reels, spring, potentiometers, the cavity that is placed in separately, easy to maintenance and simple in structure, production cost is low.Show through lot of experiments, the backguy wire rope on reel, superpose and mainly be that screen resilience is unstable and screen resilience is too small (＜13.5N), the present invention adopts custom-designed warp S type clockwork spring to preferably resolve the problem that the backguy wire rope superposes on reel.It is bigger that the present invention adopts constraint mechanisms such as orienting sleeve, guide sleeve seat to solve backguy export mouth gap, the problem that backguy easily is offset.The present invention adopts custom-designed heating radiator to solve the heat dissipation problem of electric elements, has improved measuring accuracy.
The present invention is a kind of high precision that has, and the backguy wear resistance is good, and is easy to assemble, easy care, and shock resistance is strong, and has the stay-supported linear movement pick-up of signal conditioning circuit.
Description of drawings
Accompanying drawing 1 is a backguy sensor left view;
Accompanying drawing 2 is backguy sensor front views;
Accompanying drawing 3 is backguy sensor right views;
Accompanying drawing 4 is reel assembly housing front views;
Accompanying drawing 5 is reel assembly housing right views;
Accompanying drawing 6 is reel assembly housing upward views;
Accompanying drawing 7 is potentiometer spacer vertical views;
Accompanying drawing 8 is potentiometer spacer front views;
Accompanying drawing 9 is collar vertical views;
Accompanying drawing 10 is collar front views;
Accompanying drawing 11 is spring shield front views;
Accompanying drawing 12 is spring shield vertical views;
Accompanying drawing 13 is that inner each part installation of spring shield concerns synoptic diagram.Wherein:
1. link up with 2. elastomer connectors, 3. orienting sleeves, 4. guide sleeve seats, 5. Philips screws
6. reel assembly housing 7. packing rings 8. deep groove ball bearings 9. potentiometer housings 10. binding posts
11. socket head cap screw 12. heating radiators 13. water joints 14. circuit boards 15. leads
16. potentiometer 17. potentiometer spacers 18. lock-screws 19. end rings 20. base plates
21. self-tapping screw 22. spring shields 23. collars 24. winding wheel shafts 25. springs
26. catch 27. tommys 28. reels 29. steel wires
Embodiment:
Present embodiment is a kind of stay-supported linear movement pick-up, comprises reel assembly, spring 25, potentiometer 16 and circuit board 14, spring shield 22 and potentiometer housing 9.
As Fig. 1～shown in Figure 3.Steel wire 29 is wrapped on the reel 28, and is connected with hook 1 by the through hole of reel assembly housing 6 upper ends.Guide sleeve seat 4 is between reel assembly housing 6 upper end outside surfaces and hook 1, and an end of this guide sleeve seat 4 is fixed on the reel assembly housing 6, is fixed with orienting sleeve 3 in the other end endoporus of guide sleeve seat 4.Spring shield 22 and potentiometer housing 9 symmetries be fixed on reel assembly housing 6 both sides.Constant force warp S type clockwork spring 25 is positioned at spring shield 22 and is sleeved on the winding wheel shaft 24.Winding wheel shaft 24 is fixed on the reel assembly housing 6, and the two ends of this winding wheel shaft 24 lay respectively in spring shield 22 and the potentiometer housing 9.Potentiometer 16 is positioned at potentiometer housing 9; The input shaft of potentiometer 16 is fixedlyed connected with winding wheel shaft 24, and is connected with circuit board 14 by lead 15.
As Fig. 4～shown in Figure 6, reel assembly housing 6 is the large semi-circular cylindrical shell, symmetry has the mounting hole of deep groove ball bearing 8 on reel assembly housing 6 two side wall panels, and winding wheel shaft 24 passes the axis hole of reel 28 and is fixed on the reel assembly housing 6 by deep groove ball bearing 8.Reel 28 adopts prior art, is positioned at reel assembly housing 6, and is fixed on the winding wheel shaft 24 by collar 23.Deep groove ball bearing 8 mounting hole places are fixed with end ring 19 on a side outer wall of reel assembly housing 6, are used for the spacing of bearing 8; The installation screw that guide sleeve seat 4 is arranged on reel assembly housing 6 top covers.
Orienting sleeve 3 is externally threaded hollow sleeve, and the aperture of its endoporus is slightly larger than the external diameter of steel wire 29, and steel wire 29 can be passed from this hole.Orienting sleeve 3 is installed in the eccentric orfice of guide sleeve seat 4 endpiece; Orienting sleeve 3 one end surfaces contact with elastomer connector 2.
Pass through threaded engagement between elastomer connector 2 upper ends and the hook 1.The endoporus of the endoporus of the endoporus of elastomer connector 2, orienting sleeve 3 and guide sleeve seat 4 endpiece is concentric, and overlaps with the initiating terminal of steel wire 29 on being wrapped in reel 28.
During work, be wrapped in the endoporus that steel wire 29 on the reel 28 passes guide sleeve seat 4, and enter the endoporus of orienting sleeve 3, realize spacing to steel wire 29 by the endoporus of this orienting sleeve 3 at the endpiece of guide sleeve seat 4.Steel wire 29 passes the endoporus of orienting sleeve 3 and elastomer connector 2, and is locked in the junction of elastomer connector 2 and hook 1.
As Figure 11～shown in Figure 12, spring shield 22 is circular shell spares of end sealing.There is circular groove at inside surface center at spring shield 22 blind end end plates, is used to lay winding wheel shaft 24.At spring shield 22 bore areas one arc groove that extends to spring shield 22 blind end end plates from spring shield 22 endoporus apertures is arranged, be used for the initiating terminal of mounting spring 25; The fixed orifice that the tommy 27 of spring 25 is arranged on the blind end end plate of spring shield 22 bore area arc grooves.
As Fig. 9～shown in Figure 10, collar 23 is the circular thin-wall cover of large semi-circular.11 radially outstanding trapezoid boss are arranged on the annular wall of collar 23, and the axial length of boss is slightly less than the axial length of collar 23, forms elastic wall with this.Collar 23 is installed in the annular groove of winding wheel shaft 24 and forms interference fit with the axis hole of reel 28, rotates thereby drive reel 28.
Winding wheel shaft 24 is a multidiameter, and its external diameter must satisfied cooperate with the endoporus of deep groove ball bearing 8 and the endoporus of reel 28.Winding wheel shaft 24 1 ends after the installation are positioned at spring shield 22, have strip slot vertically at the shaft part outside surface that is positioned at spring shield 22.The other end of winding wheel shaft 24 is positioned at potentiometer housing 9, and the end face of winding wheel shaft 24 these ends has the mounting hole of potentiometer 16 rotating shafts; On this end end circumference, be evenly distributed with three threaded holes that are used for installing lock-screw 18.
The potentiometer spacer of making as Fig. 7～stalloy shown in Figure 8 17 is the rectangle sheet, and an end has the through hole that cooperates with potentiometer 16 rotating shafts, and the other end is fluting.During use, potentiometer spacer 17 1 ends are sleeved in potentiometer 16 rotating shafts, the other end is stuck on the binding post 10.
With potentiometer 16 rotating shafts pack on the winding wheel shaft 24 mounting hole and by potentiometer spacer 17 fixing after, with lock-screw 18 from radially the rotating shaft of potentiometer 16 being tightened up, so that the rotating shaft of potentiometer 16 and winding wheel shaft 24 rotate synchronously.Potentiometer 16 is connected with circuit board 14 by lead 15.Pin welding corresponding on circuit board 14 and the water joint 13 is fixed as one.Water joint 13 is positioned at potentiometer housing 9 end cap outside surfaces, and the attaching nut of water joint is installed in the mounting hole at potentiometer housing 9 end cap centers.Four socket head cap screws 11 are screwed into from potentiometer housing 9 end caps, potentiometer housing 9 is fixed on the reel assembly housing 6, and potentiometer housing 9 have O-ring seal with reel assembly housing 6 junctions.
As Fig. 2 and shown in Figure 13, spring 25 is positioned at spring shield 22, one ends and is fixed in the strip slot on the winding wheel shaft 24, and the other end is fixed on the tommy 27 on the spring shield 22.On the side inwall of spring shield 22 and with it on the sidewall outside surface of corresponding reel assembly housing 6 catch 26 that is sleeved on the winding wheel shaft 24 is arranged all, be used to prevent that spring 25 from producing friction with it.
During use, earlier sensor is fixed, again hook 1 is linked to each other with testee, along with the moving displacement of testee produces thereupon, hook 1 and elastomer connector 2 just drive steel wire 29 and pull out from orienting sleeve 3 and guide sleeve seat 4, steel wire 29 drives reel 28 simultaneously and rotates, then driving winding wheel shaft 24 by collar 23 rotates, 24 input shaft and springs 25 that rotation passed to potentiometer 16 of winding wheel shaft, potentiometer 16 input shafts rotate and to cause that potentiometer outputs signal to circuit board 14, and linking to each other with data acquisition equipment by water joint 13 after circuit board is handled to draw shift value; After measurement was finished, the energy that the rotation of spring 25 is laid in when measuring then drove winding wheel shaft 24 counter-rotatings, was wrapped in again on the reel 28 thereby steel wire 29 retracted, and hook 1 is got back to reference position.
Claims (7)
1. a stay-supported linear movement pick-up comprises hook (1), steel wire (29), reel (28), spring (25), potentiometer (16), wiring board (14), winding wheel shaft (24), bearing and housing; Steel wire (29) is wrapped on the reel (28), and is connected with hook (1) by the through hole on the housing; The input shaft of potentiometer (16) is fixedlyed connected with winding wheel shaft (24), and is connected with circuit board by lead; It is characterized in that,
A. described stay-supported linear movement pick-up also comprises orienting sleeve (3), guide sleeve seat (4), spring shield (22) and potentiometer housing (9); Between reel assembly housing (6) upper end outside surface and hook (1), be fixed with guide sleeve seat (4), orienting sleeve (3) and elastomer connector (2), and the endoporus of the endoporus of the endoporus of elastomer connector (2), orienting sleeve (3) and guide sleeve seat (4) endpiece is concentric, and overlaps with the initiating terminal of steel wire (29) on being wrapped in reel (28);
B. spring (25) adopts constant force warp S type clockwork spring;
C. steel wire (29) is wrapped on the reel (28), and is connected with hook (1) by the through hole of reel assembly housing (6) upper end; Spring shield (22) and potentiometer housing (9) symmetry be fixed on reel assembly housing (6) both sides; Constant force warp S type clockwork spring (25) is positioned at spring shield (22) and is sleeved on the winding wheel shaft (24); Winding wheel shaft (24) is fixed on the reel assembly housing (6), and the two ends of this winding wheel shaft (24) lay respectively in spring shield (22) and the potentiometer housing (9); Potentiometer (16) is positioned at potentiometer housing (9); The input shaft of potentiometer (16) is fixedlyed connected with winding wheel shaft (24), and is connected with circuit board (14) by lead (15).
2. a kind of according to claim 1 stay-supported linear movement pick-up, it is characterized in that, one end of spring (25) is fixed in the draw-in groove of winding wheel shaft (24) upper end, and the other end of warp S type clockwork spring (25) is fixed on the interior tommy (27) of spring shield (22).
3. a kind of according to claim 1 stay-supported linear movement pick-up, it is characterized in that, the endoporus of guide sleeve seat (4) is divided into mutual perforation but two sections of decentraction, be eccentric orfice at the endoporus of guide sleeve seat (4) endpiece, and this eccentric orfice is concentric with elastomer connector (2).
4. as a kind of stay-supported linear movement pick-up as described in the claim 3, it is characterized in that an end of guide sleeve seat (4) is fixed on reel assembly housing (6) upper end outside surface, guide sleeve seat (4) other end and orienting sleeve (3) are connected.
5. a kind of according to claim 1 stay-supported linear movement pick-up is characterized in that, the aperture of orienting sleeve (3) is slightly larger than the external diameter of steel wire (29), and steel wire (29) can be passed from this hole; Orienting sleeve (3) is installed in the eccentric orfice of guide sleeve seat (4) endpiece; Orienting sleeve (3) one end end faces contact with elastomer connector (2).
6. a kind of according to claim 1 stay-supported linear movement pick-up is characterized in that, 11 radially outstanding boss are arranged on the annular wall of collar (23), and the axial length of boss is slightly less than the axial length of collar (23), forms elastic wall with this; Collar (23) be installed in the annular groove of winding wheel shaft (24) and with the axis hole interference fit of reel (28).
7. a kind of according to claim 1 stay-supported linear movement pick-up is characterized in that, on potentiometer housing (9) the waterproof external connector is arranged; Potentiometer housing (9) has O-ring seal with reel assembly housing (6) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202987072U CN201772856U (en) | 2010-08-19 | 2010-08-19 | Pull wire type linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202987072U CN201772856U (en) | 2010-08-19 | 2010-08-19 | Pull wire type linear displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772856U true CN201772856U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202987072U Expired - Lifetime CN201772856U (en) | 2010-08-19 | 2010-08-19 | Pull wire type linear displacement sensor |
Country Status (1)
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| CN (1) | CN201772856U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278964A (en) * | 2011-08-03 | 2011-12-14 | 宁夏路桥工程股份有限公司 | Wireless stretching elongation sensor |
| CN102889268A (en) * | 2011-07-21 | 2013-01-23 | 杨世祥 | Internally-arranged sensor of magnetic engaging liquid/air-pressure cylinder |
| CN104655248A (en) * | 2015-02-11 | 2015-05-27 | 李晓刚 | Vehicle load sensor |
| CN104847330A (en) * | 2014-12-22 | 2015-08-19 | 山东大学 | Simple automatic recorder for drilling speed of drilling rig |
| CN105352972A (en) * | 2015-10-21 | 2016-02-24 | 国家林业局北京林业机械研究所 | Detection apparatus for wane defect of rectangular bamboo splint |
| CN105547123A (en) * | 2015-12-11 | 2016-05-04 | 华自科技股份有限公司 | Displacement measurement device and displacement measurement method by adopting displacement measurement device |
| CN107421481A (en) * | 2017-07-04 | 2017-12-01 | 成都理工大学 | A kind of three-dimension monitor early warning multipoint displacement meter for being used to measure rock mass dilatancy |
| CN111780701A (en) * | 2020-07-27 | 2020-10-16 | 赣州德业电子科技有限公司 | Vertical wire outlet device for steel wire rope of displacement sensor |
| CN111811454A (en) * | 2020-07-03 | 2020-10-23 | 湖南中大检测技术集团有限公司 | Protection structure of stay wire type displacement sensor and construction method thereof |
| CN114485513A (en) * | 2021-12-30 | 2022-05-13 | 南京理工大学 | Be applied to displacement sensor that acts as go-between to act as go-between fixer |
-
2010
- 2010-08-19 CN CN2010202987072U patent/CN201772856U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889268A (en) * | 2011-07-21 | 2013-01-23 | 杨世祥 | Internally-arranged sensor of magnetic engaging liquid/air-pressure cylinder |
| CN102889268B (en) * | 2011-07-21 | 2017-09-01 | 杨世祥 | A kind of magnetic engages liquid/gas cylinder pressure built-in sensor |
| CN102278964A (en) * | 2011-08-03 | 2011-12-14 | 宁夏路桥工程股份有限公司 | Wireless stretching elongation sensor |
| CN104847330A (en) * | 2014-12-22 | 2015-08-19 | 山东大学 | Simple automatic recorder for drilling speed of drilling rig |
| CN104847330B (en) * | 2014-12-22 | 2018-10-26 | 山东大学 | A kind of simple automatic recording instrument of drill hole of drilling machine speed |
| CN104655248A (en) * | 2015-02-11 | 2015-05-27 | 李晓刚 | Vehicle load sensor |
| CN105352972A (en) * | 2015-10-21 | 2016-02-24 | 国家林业局北京林业机械研究所 | Detection apparatus for wane defect of rectangular bamboo splint |
| CN105547123A (en) * | 2015-12-11 | 2016-05-04 | 华自科技股份有限公司 | Displacement measurement device and displacement measurement method by adopting displacement measurement device |
| CN107421481A (en) * | 2017-07-04 | 2017-12-01 | 成都理工大学 | A kind of three-dimension monitor early warning multipoint displacement meter for being used to measure rock mass dilatancy |
| CN111811454A (en) * | 2020-07-03 | 2020-10-23 | 湖南中大检测技术集团有限公司 | Protection structure of stay wire type displacement sensor and construction method thereof |
| CN111780701A (en) * | 2020-07-27 | 2020-10-16 | 赣州德业电子科技有限公司 | Vertical wire outlet device for steel wire rope of displacement sensor |
| CN114485513A (en) * | 2021-12-30 | 2022-05-13 | 南京理工大学 | Be applied to displacement sensor that acts as go-between to act as go-between fixer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Bai Wei Inventor after: Ning Ning Inventor after: Xiao Yingchun Inventor after: Li Minxing Inventor after: Zhan Shaozheng Inventor after: Du Zhenhua Inventor before: Bai Wei Inventor before: Xiao Yingchun Inventor before: Li Minxing Inventor before: Zhan Shaozheng Inventor before: Du Zhenghua |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: BAI WEI XIAO YINGCHUN LI MINXING ZHAN SHAOZHENG DU ZHENGHUA TO: BAI WEI NING NING XIAO YINGCHUN LI MINXING ZHAN SHAOZHENG DU ZHENHUA |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |