CN201688933U

CN201688933U - On-line tension detecting device of multifunctional and bi-component sensor

Info

Publication number: CN201688933U
Application number: CN2009202099656U
Authority: CN
Inventors: 杨金保; 陆宏如; 杨蓉
Original assignee: SHANGHAI GUIBAO ELECTROMACHICAL CO Ltd
Current assignee: SHANGHAI GUIBAO ELECTROMACHICAL CO Ltd
Priority date: 2009-09-23
Filing date: 2009-09-23
Publication date: 2010-12-29
Anticipated expiration: 2019-09-23

Abstract

The utility model provides an on-line tension detecting device which is applied to the line-shaped material, the rope-shaped material, the bundle-shaped material, the strip-shaped material and the sheet-shaped material. The on-line tension detecting device comprises a uniform-section elastic sheet, a torsion shaft and a heat dissipation, overload and underload automatic protection device, wherein the two ends of the uniform-section elastic strip are fixed on a flat board, the torsion shaft is penetrated through the centers of the flat board and the elastic sheet, one end of the torsion shaft is a detection end, one side or two sides of the detection end is/are provided with a conducting part of a material to be detected, the other end of the torsion shaft is provided with a similar bi-component magnetic sensor in the magnetic fields of one set or two sets of magnets, the temperature drift can be removed by utilizing the bi-component magnetic sensor, and one edge of the elastic sheet can be adjusted to reach the two-edge balance. The on-line tension detecting device has the advantages of comprehensively using the functions of the elastic sheet and the torsion shaft, converting the tension change of the material to be detected into corresponding displacement of the torsion shaft which corresponds to the intensity change of the magnetic field on the torsion shaft and has the linear relation with the output voltage of a magnetic sensitive component, and leads the signal to be stronger due to the shield of the magnets, thereby being capable of performing the on-line automatic detection on the tension change of the material to be detected.

Description

Multi-functional, bicomponent sensor on-line tension pick-up unit

Technical field

The utility model relates to multi-functional, bicomponent sensor on-line tension pick-up unit, be suitable for and materials such as wire, rope form, pencil, strip, sheet, as yarn, converted top, electric wire, materials such as optical fiber cable, carbon fiber, steel plate, tape, plastic sheeting are the online detection and the sensing of tension force at the volley.

Background technology

In the commercial production, material tension force in the motion is carried out online detection, can guarantee dynamic adjustment, control and warning behind the processing parameter setting, thereby guarantee constant around density of material circle in the whole process of production, realized product quality the best, the effect of output maximum.

Therefore, occurred various dynamic tension sensors at present both at home and abroad, mechanical type, condenser type, electronics strain chip etc. have been arranged by the action principle classification.The force transformation flexible member that existing mechanical tension sensor adopts has following several again: uniform cross section cylindrical form, form of annular rings, uniform cross section sheet form, semi-girder form and torsion shaft version.

The application of above-mentioned various forms of tension pick-up and force transformation flexible member, the tension range that is detected, the complexity of accuracy of detection and fabrication and processing has nothing in common with each other, and weak point has his own strong points.

The constructional device that 01211093.0 number Chinese utility model patent has proposed a kind of " force transducer that on-line automatic detection device is used ", feature is to adopt a slice both sides to be fastened on a dull and stereotyped uniform cross section flexure strip of going up and not being close to flat board, adopt a torsion shaft vertically to pass this flexure strip, one end of torsion shaft is the test side of testee contact, and the other end is the transducing signal output terminal that is fixed with magnetic.In the testing process, when the testee tension fluctuation in the motion, the stressed variation in torsion shaft test side, and twist by the effect of the flexure strip that tightens together with torsion shaft, corresponding displacement takes place in the torsion shaft output terminal, cause the variation in magnetic field thus, and, reflect the tension variation of measured object with the form output that voltage linear changes.This form can accurately be carried out detection of dynamic, but can not adapt to long-time online detection, because variation of temperature has influenced signal of sensor, detect data deviation and zero drift thereby cause, product quality can't be guaranteed, in addition since the single-sensor output signal a little less than, make member longer, thereby the inconvenience of use, the setting of sensor is subjected to gravity effect; 200710045540.1 number Chinese invention patent application has been done improvement on the basis of No. 01211093.0 patented technology, the version of a kind of " dynamic tension sensor " has been proposed, utilize the complementation of dual sensor, eliminated temperature drift effects, output signal has had increase; By flexure strip adjustment on one side, eliminated the gravity effect of another side, its effect is obvious, has certain practical value; Since dual sensor in pairing, debugging, installation and position encapsulation fixation procedure not on same seat, be difficult to accomplish mutual coupling, made very inconvenience of production, deviation after particularly solidifying and variable effect the effect that detects, thereby cause use go up inconvenient.

Summary of the invention

The purpose of this utility model is to have done improvement on the basis of above-mentioned No. 01211093.0 patent and No. 200710045540.1 patented technologies, and a kind of novel multifunctional, bicomponent sensor on-line tension pick-up unit are provided.

Feature of the present utility model is a uniform cross section flexure strip that adopts two ends to fasten on flat board and be not close to flat board, one is passed dull and stereotyped and the center of flexure strip and the torsion shaft that tightens together with flexure strip, one end of torsion shaft is that the test side contacts with tested material, the conducting parts that is provided with tested material is surveyed in two of test side, side with the test side behind the material process conducting parts forms an angle of contact, one of the other end is surveyed or two surveys are fixed with magnetic, is fixed with signal output elements single or two two component magneto-dependent sensors in the pairing magnetic field of magnetic.

Two component magneto-dependent sensors are the version that is combined in one by two magneto-dependent sensors, and each test side can be arranged on the one or both sides of flexure strip with one or two pair component magneto-dependent sensor; The magnetic of two component magneto-dependent sensors is single head or double end form, and that magnetic has is open, the version of shield cover or utmost point target formula; The upper and lower of sensor torsion shaft front and back ends sheath is provided with spacing overload or underload protection fulcrum; Torsion shaft can be established a balancing patch before and after flexure strip; Can set heat radiator on the torsion shaft of test side; The transmission that test side A is ordered has fixed and two kinds of versions of tumbling-type.

The utility model has the advantages that the rational in infrastructure of pick-up unit, can change the length and the size of torsion shaft according to measuring accuracy and resolution simultaneously, the tension force of tested material can be converted into the form output that voltage linear changes with changes of magnetic field, bicomponent sensor has been eliminated the influence of temperature to detection signal, make dynamic online testing result more accurate, reliable in real time; With mild carbon steel and mild steel to the screen of magnetic worn-out and pole shoe, more strengthened the output and the anti-interference of signal.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model patent " multi-functional, bicomponent sensor on-line tension pick-up unit "; Fig. 2 is positioned at the structural representation of flexure strip homonymy for test side and output terminal; Fig. 3 is positioned at the structural representation that the flexure strip both sides are provided with balancing patch for test side and output terminal; Fig. 4, Fig. 5 are the stressing conditions synoptic diagram of A point in test side when test among Fig. 2, Fig. 3; Fig. 6, Fig. 7, Fig. 8, Fig. 9 are the structural representation of output terminal B point dual sensor signal output element various combination among Fig. 2, Fig. 3; Structural representation when Figure 10 detects board for test side A point; Two kinds of synoptic diagram that magnetic is double end when Figure 11, Figure 12 are arranged on the centre for flexure strip; Figure 13, Figure 14 shield worn-out structural representation with mild steel to magnetic for the magnetic force concentrator; Figure 15, Figure 16 are the structural representation that single magnet is adopted the pole shoe form; Figure 17, Figure 18 are the structural representation that two bicomponent sensors adopt single magnet; Figure 19 adopts the structural representation of pole shoe for bicomponent sensor adopts the double end magnetic; Figure 20 is the structural representation that two bicomponent sensors adopt double end magnetic pole shoe respectively; Figure 21 is A point or B point overload or the underload structural representation that the protection fulcrum is set.Among the figure:

1. torsion shaft; 2. flexure strip; 3. fixed flat planar; 4. magnetic; 5. material conducting parts; 6. two component magneto-dependent sensors; 7. tested material; 8. balancing patch; 9. stator; 10. sheath; 11. fulcrum; 12. heat radiator; 13. web member; 14 shield covers; 15 pole shoes.

Embodiment:

Below the utility model patent is described in further details.

Flexure strip 2 is a sheet metal, when selecting the flexure strip 2 of different elastic feel quantity materials, different in width, differing heights or different-thickness for use, can change the dynamometry scope, the deflection of resolving power size and flexure strip 2 reaches the requirement to dynamic linear output and resolution thus.

Test side on the torsion shaft 1 and output terminal can be positioned at the both sides or the homonymy of flexure strip 2, when being positioned at homonymy, for keeping the two ends balance of torsion shaft 1 under the static condition, balancing patch 8 can be set at the opposite side of torsion shaft 1, balancing patch 8 can be selected nut or other members of different size as required for use.

Distance between change test side check point A and the flexure strip can change the size of dynamic range.

The magnetic 4 of output terminal can be the same sex or different in nature structure, changes the intensity of magnetic 4, the size that spacing can be adjusted dynamometry scope or resolving power.

In the online testing process, when the tension fluctuation of motion material, the stressed variation in torsion shaft 1 test side, and the effect of the flexure strip 2 that tightens together by torsion shaft 1 twists, corresponding displacement takes place in the output terminal of torsion shaft 1, cause the variation in magnetic field thus, and, reflect the tension variation of tested material thus with the form output that voltage linear changes.

Sensor overload and underload influence have effectively been protected in the setting of limiting foothold 11; The setting of balancing patch 8 makes detection of dynamic more reliable and more stable; Being provided with overheating protection in high speed, the hypervelocity detection of dynamic of heat radiator 12 obtained safe assurance.

Magnetic 4 usefulness mild carbon steel and mild steel are shielded worn-out and pole shoe, make output signal stronger, anti-interference is better, and the length of magnetic force concentrator and size also directly influence the magnetic flux density power.

The composition of two component magneto-dependent sensors 6, original sensor has been made significant improvement, two magneto-dependent sensors are made on the chip, two sensors can not be placed on a breakthrough on the seat before having solved, stability, reliability, consistance and the accuracy of output signal are guaranteed, and Temperature Influence has not only been offset in the complementation of dual sensor temperature coefficient, the signal of output is the twice of single-sensor, thereby makes online detected value more accurate reliable.

Claims

1. multi-functional, bicomponent sensor on-line tension pick-up unit, it is characterized in that comprising: the uniform cross section flexure strip (2) that two ends are fastened on that flat board (3) is gone up and are not close to dull and stereotyped (3), pass the center of flat board (3) and flexure strip (2) and the torsion shaft (1) that tightens together with flexure strip (2), one end of torsion shaft (1) is that the test side contacts with tested material (7), the both sides of test side are provided with by side material conducting parts (5), the one or both sides of the other end are fixed with magnetic (4), are fixed with signal output elements single or two two component magneto-dependent sensors (6) in the pairing magnetic field of magnetic (4).

2. multi-functional, bicomponent sensor on-line tension pick-up unit as claimed in claim 1, it is characterized in that described pair of component magneto-dependent sensor (6) is the version that is combined in one by two magneto-dependent sensors, each test side can be arranged on the one or both sides of flexure strip (1) with one or two pair component magneto-dependent sensor (6).

3. multi-functional, bicomponent sensor on-line tension pick-up unit as claimed in claim 1, the magnetic (4) that it is characterized in that described pair of component magneto-dependent sensor (6) is single head or double end form, and that magnetic (4) has is open, the version of shield cover (14) or utmost point target (15) formula.

4. multi-functional, bicomponent sensor on-line tension pick-up unit as claimed in claim 1 is characterized in that the upper and lower of described torsion shaft (1) front and back ends sheath (10) is provided with spacing overload or underload protection fulcrum (11).

5. multi-functional, bicomponent sensor on-line tension pick-up unit as claimed in claim 1 is characterized in that described torsion shaft (1) can establish a balancing patch (8) before and after the flexure strip (2).

6. multi-functional, bicomponent sensor on-line tension as claimed in claim 1 such as pick-up unit is characterized in that can setting heat radiator (12) on the torsion shaft (1) of described test side.

7. multi-functional, bicomponent sensor on-line tension as claimed in claim 1 such as pick-up unit is characterized in that the transmission that described test side A is ordered has fixed and two kinds of versions of tumbling-type.