CN112484609A - Ratio piezoelectric type rotating shaft eccentricity detection early warning device - Google Patents
Ratio piezoelectric type rotating shaft eccentricity detection early warning device Download PDFInfo
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- CN112484609A CN112484609A CN202011282544.3A CN202011282544A CN112484609A CN 112484609 A CN112484609 A CN 112484609A CN 202011282544 A CN202011282544 A CN 202011282544A CN 112484609 A CN112484609 A CN 112484609A
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- rotating shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
- G01B7/31—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B7/312—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses ratio piezoelectric type rotating shaft eccentricity detection early warning equipment which comprises a fixed plate and a detection tube, wherein the inner wall of the detection tube is respectively provided with a plurality of first detection grooves and a plurality of second detection grooves in an annular symmetry manner, a first piezoelectric plate and a second piezoelectric plate are respectively arranged in each first detection groove and each second detection groove, sealing covers are respectively arranged on the notches of the first detection groove and the second detection groove, and a detection rod is slidably inserted in each sealing cover. The rotating shaft bending detection device is simple and ingenious in structure, changes of rotating radius of the rotating shaft caused by bending angles of the rotating shaft are detected through the first piezoelectric sheet and the second piezoelectric sheet, the rotating shaft bending degree is detected, non-stop real-time detection and early warning are realized through the detection pipe sleeve on the rotating shaft, and the accuracy and the reliability of detection and early warning are improved.
Description
Technical Field
The invention relates to the field of rotating shaft detection, in particular to ratio piezoelectric type rotating shaft eccentricity detection early warning equipment.
Background
Automatic mechanical equipment is the high efficiency electrification equipment that processing is commonly used now, automatic mechanical equipment is adding man-hour in production, need the transmission between each part, and the pivot transmission is the comparatively general high-efficient transmission mode of in-service use, the pivot can receive the gravity influence of self gravity and connecting piece and appear crooked when the transmission, but the bending degree is minimum, do not influence the use, but under some circumstances that the load is heavier, the pivot atress is heavier, along with the increase of live time, the crookedness is also constantly increasing, after the crooked certain degree of pivot, will cause the damage to accessories such as pivot self and connecting piece, consequently, need scrap the change.
The existing rotating shaft bending detection usually adopts human eyes to observe the bending and straightening conditions, the judgment precision is low, the rotating shaft needs to be detached for detection in machine detection, the normal working machinery is affected, the rotating shaft reaching the bending limit in the working process cannot be alarmed in time, and the mechanical damage is easily caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a ratio piezoelectric type rotating shaft eccentricity detection early warning device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a ratio piezoelectric type pivot eccentric detection early warning equipment, includes fixed plate and detecting tube, annular symmetry has been seted up a plurality of first detection groove and a plurality of second detection groove respectively on the inner wall of detecting tube, every first detection groove and second detect the inslot and equally divide and do not install first piezoelectric plate and second piezoelectric plate, every the cover is all installed to the notch that first detection groove and second detected the groove, every equal slip inserts on the cover and is equipped with the measuring bar, every the mount is all installed to the one end that the measuring bar is located the detecting tube, every all rotate on the mount and install a plurality of rollers, it is a plurality of the measuring bar is located the first one end that detects the inslot and the second that correspond and all installs the pick-up plate, every one side that the measuring bar was kept away from to the pick-up plate all installs the detection spring, it is a plurality of detection spring fix respectively on a plurality of first detection groove and a plurality of second detection groove that correspond.
Preferably, two fixed slots, every have all been installed to the symmetry in the fixed slot on the lateral wall of detecting tube, a plurality of bracing pieces, every are installed to the upper surface symmetry of fixed plate fixed cover, a plurality of are all installed to the upper end of bracing piece fixed cover is established on two dead levers, it is a plurality of fixed cover symmetry cover is established.
Preferably, a detector is mounted on the fixing plate, and the detector is electrically connected to the first piezoelectric patches and the second piezoelectric patches respectively.
Preferably, the first piezoelectric sheet and the second piezoelectric sheet are of the same specification, and the first detection groove and the second detection groove are the same.
Preferably, the distance between the fixing frame and the cover is greater than the distance between the cover and the bottoms of the corresponding first detection groove and the second detection groove.
Preferably, the rotation axes of the plurality of rollers on each of the fixed frames are parallel to the axis of the detection tube.
The invention has the following beneficial effects:
1. insert the pivot in the detection tube through the roller extrusion, make the roller rotate along with the rotation of pivot, attached surface detection pivot pivoted change in the pivot that can be better promptly, when the pivot is crooked, make the radius of rotation increase of flexion, make the measuring staff by periodic promotion, make first piezoelectric patch and second piezoelectric patch receive periodic pressure through pick-up plate and detection spring and produce periodic signal of telecommunication, the detector calculates the deflection of pivot and carries out the comparison with the threshold value of establishing in through periodic signal of telecommunication, judge whether surpass the threshold value, realize the eccentric pivoted detection early warning of pivot, it is more accurate to observe by people.
2. The detection pipe is sleeved on a transmission rotating shaft of the mechanical equipment and fixed on the mechanical equipment through the fixing plate, so that the detection pipe can carry out real-time detection and early warning in the operation process of the mechanical equipment, damage to the mechanical equipment due to the fact that the rotating shaft is bent greatly in the operation process is avoided, and the reliability of early warning is improved.
In conclusion, the rotating shaft bending detection device is simple and ingenious in structure, changes of the rotating radius of the rotating shaft caused by bending angles of the rotating shaft are detected through the first piezoelectric sheet and the second piezoelectric sheet, the rotating shaft bending degree is detected, non-stop real-time detection and early warning are realized through the detection pipe sleeve on the rotating shaft, and the accuracy and the reliability of the detection and early warning are improved.
Drawings
Fig. 1 is a schematic structural diagram of a ratio piezoelectric type rotating shaft eccentricity detection early warning device provided by the invention;
FIG. 2 is a side sectional view of a ratio piezoelectric type rotating shaft eccentricity detection early warning device provided by the present invention;
fig. 3 is a schematic diagram of ratio detection of a ratio piezoelectric type rotating shaft eccentricity detection early warning device according to the present invention.
In the figure: the device comprises a fixing plate 1, a support rod 11, a fixing sleeve 12, a detector 13, a detection tube 2, a fixing groove 21, a fixing rod 22, a first detection groove 23, a second detection groove 24, a sealing cover 25, a first piezoelectric sheet 3, a second piezoelectric sheet 4, a detection rod 5, a detection plate 51, a detection spring 52, a fixing frame 53 and a roller 54.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a ratio piezoelectric rotating shaft eccentricity detection early warning device comprises a fixed plate 1 and a detection tube 2, wherein a plurality of first detection grooves 23 and a plurality of second detection grooves 24 are respectively and annularly and symmetrically formed in the inner wall of the detection tube 2, a first piezoelectric plate 3 and a second piezoelectric plate 4 are respectively installed in each of the first detection grooves 23 and the second detection grooves 24, a sealing cover 25 is installed at the notch of each of the first detection grooves 23 and the second detection grooves 24, a detection rod 5 is slidably inserted in each of the sealing covers 25, a fixed frame 53 is installed at one end of each detection rod 5 located in the detection tube 2, a plurality of rollers 54 are rotatably installed on each fixed frame 53, a detection plate 51 is installed at one end of each detection rod 5 located in the corresponding first detection groove 23 and the corresponding second detection groove 24, a detection spring 52 is installed at one side of each detection plate 51 away from the detection rod 5, the plurality of detection springs 52 are fixed to the corresponding plurality of first detection grooves 23 and second detection grooves 24, respectively.
Two fixed slots 21 have been seted up to the symmetry on the lateral wall of detecting tube 2, all install dead lever 22 in every fixed slot 21, a plurality of bracing pieces 11 are installed to the upper surface symmetry of fixed plate 1, fixed cover 12 is all installed to the upper end of every bracing piece 11, a plurality of fixed cover 12 symmetrical sleeves are established on two dead levers 22, fixed plate 1 passes through bracing piece 11 and fixed cover 12 symmetrical fixed connection bracing piece 11, make detecting tube 2 can be followed the coaxial fixed of pivot axis by fixed plate 1, increase the stability and the accuracy that detect.
Install detector 13 on fixed plate 1, detector 13 is a plurality of first piezoelectric patches 3 of electric connection and a plurality of second piezoelectric patches 4 respectively, first piezoelectric patch 3 and second piezoelectric patch 4 detect respectively and are stressed, feedback out corresponding position pivot eccentric pivoted radius promptly, then calculate the eccentric radius of rotation of corresponding position according to voltage signal, calculate bending angle through the radius of rotation difference of two positions and the distance between first piezoelectric patch 3 and the second piezoelectric patch 4, judge whether report to the police according to bending angle and threshold comparison, increase the detection precision, and calculate not influenced by pivot radius according to the difference, can detect pivot in the certain diameter scope promptly, increase the suitability that equipment detected.
The first piezoelectric sheet 3 and the second piezoelectric sheet 4 have the same specification, and the first detection groove 23 and the second detection groove 24 have the same specification, so that detection independent variables are reduced, and detection precision is improved.
The distance between the fixing bracket 53 and the cover 25 is greater than the distance between the cover 25 and the bottoms of the corresponding first detection groove 23 and second detection groove 24, so that the eccentric rotation radius of the rotating shaft can be completely detected by the detection rod 5.
The rotation axes of the plurality of rollers 54 on each fixing frame 53 are parallel to the axis of the detection tube 2, so that the rollers 54 can be attached to the surface of the rotating shaft and rotate along with the rotating shaft, the friction loss between the rotating shaft and the rollers 54 is reduced, and the service life is prolonged.
When the invention is used, a mechanical rotating shaft is inserted into a detection tube 2, so that a plurality of rollers 54 are tightly pressed against the surface of the rotating shaft, then a fixing plate 1 is fixed in parallel in the axial direction, when the mechanical rotating shaft rotates, the rollers 54 are driven to rotate, loss is reduced, when the mechanical rotating shaft bends, the rotating radiuses of the mechanical rotating shaft at a first detection groove 23 and a second detection groove 24 are different, the extrusion distances of the mechanical rotating shaft extruding the rollers 54 are different, so that the first piezoelectric sheet 3 and the second piezoelectric sheet 4 are stressed differently, unequal detection voltages are generated, a detector 13 calculates the pressing distance of a detection rod 5 according to the detection voltages, the distance detected and converted by the first piezoelectric sheet 3 is set as M, the distance detected and converted by the second piezoelectric sheet 4 is set as N, the distance between the first piezoelectric sheet 3 and the second piezoelectric sheet 4 is set as X, the detection difference is converted into M-N, and the tan alpha of a deflection angle is (M-N)/X, and comparing the calculated alpha value with an internal threshold value, if the alpha value is larger than or equal to the threshold value, the detector 13 gives an alarm, otherwise, the detector does not give an alarm.
It is worth mentioning that the angle alpha calculation is compared according to the ratio angle, and is irrelevant to the diameter of the mechanical rotating shaft, namely the mechanical rotating shaft in the first diameter range is calculated according to the ratio of the difference value of the rotating radii of two sides of one section of horizontal distance of the eccentric rotation to the horizontal distance, so that the mechanical rotating shaft with more specifications can be applied, and the applicability of the equipment is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides an eccentric early warning equipment that detects of ratio piezoelectric type pivot, includes fixed plate (1) and detecting tube (2), its characterized in that, annular symmetry has been seted up a plurality of first detection groove (23) and a plurality of second detection groove (24), every respectively on the inner wall of detecting tube (2) first detection groove (23) and second are detected and are equallyd divide in groove (24) and install first piezoelectric patch (3) and second piezoelectric patch (4), every first detection groove (23) and second are detected the notch of groove (24) and all install closing cap (25), every all slide on closing cap (25) and insert and be equipped with detection pole (5), every detection pole (5) are located the one end of detecting tube (2) and all install mount (53), every all rotate on mount (53) and install a plurality of rollers (54), it is a plurality of detection pole (5) are located the first detection groove (23) and the second that correspond and detect the one end in groove (24) and all install detection board (53), it is a plurality of (51) Each detection plate (51) is provided with a detection spring (52) at one side far away from the detection rod (5), and the detection springs (52) are respectively fixed on the corresponding first detection grooves (23) and the second detection grooves (24).
2. The specific piezoelectric rotating shaft eccentricity detection and early warning device as claimed in claim 1, wherein two fixing slots (21) are symmetrically formed in the outer side wall of the detection tube (2), each fixing rod (22) is installed in each fixing slot (21), a plurality of support rods (11) are symmetrically installed on the upper surface of the fixing plate (1), a fixing sleeve (12) is installed at the upper end of each support rod (11), and the plurality of fixing sleeves (12) are symmetrically sleeved on the two fixing rods (22).
3. The specific piezoelectric type rotating shaft eccentricity detection early warning device as claimed in claim 1, wherein a detector (13) is mounted on the fixing plate (1), and the detector (13) is electrically connected to the first piezoelectric sheets (3) and the second piezoelectric sheets (4) respectively.
4. The specific piezoelectric rotating shaft eccentricity detection early warning device as claimed in claim 1, wherein the first piezoelectric plate (3) and the second piezoelectric plate (4) are of the same specification, and the first detection groove (23) and the second detection groove (24) are the same.
5. The specific piezoelectric rotating shaft eccentricity detection early warning device as claimed in claim 1, wherein the distance between the fixed frame (53) and the sealing cover (25) is greater than the distance between the sealing cover (25) and the bottoms of the corresponding first detection groove (23) and second detection groove (24).
6. The ratiometric piezoelectric rotor shaft eccentricity detection and warning device according to claim 1, wherein the rotation axes of the rollers (54) on each of the holders (53) are parallel to the axis of the detection tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282544.3A CN112484609A (en) | 2020-11-16 | 2020-11-16 | Ratio piezoelectric type rotating shaft eccentricity detection early warning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011282544.3A CN112484609A (en) | 2020-11-16 | 2020-11-16 | Ratio piezoelectric type rotating shaft eccentricity detection early warning device |
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| CN112484609A true CN112484609A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011282544.3A Pending CN112484609A (en) | 2020-11-16 | 2020-11-16 | Ratio piezoelectric type rotating shaft eccentricity detection early warning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701947A (en) * | 2021-07-19 | 2021-11-26 | 湖北文理学院 | Motor eccentric fault detection device and detection method |
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| JPS60150016A (en) * | 1984-01-17 | 1985-08-07 | Ricoh Co Ltd | Adjusting and assembling device for lens system |
| CN101907758A (en) * | 2009-06-08 | 2010-12-08 | 富士能株式会社 | The off-centre of optical element is adjusted assemble method and the eccentric apparatus for assembling of adjusting |
| CN102759864A (en) * | 2011-04-22 | 2012-10-31 | 东友精细化工有限公司 | Controlling device for preventing snaking of patterns of patterned films |
| CN103063743A (en) * | 2013-01-11 | 2013-04-24 | 浙江大学 | Moveable-feeding-mechanism-based ultrasonic flaw detection system for bent steel tubes |
| CN104330070A (en) * | 2014-11-24 | 2015-02-04 | 武汉武船机电设备有限责任公司 | Axis deviation detection device and detection method |
| CN108592782A (en) * | 2018-05-14 | 2018-09-28 | 贵州电网有限责任公司 | A kind of steam-electric generating set shafting bias on-line monitoring system and its monitoring method |
| CN208937008U (en) * | 2018-11-23 | 2019-06-04 | 陈辉 | A kind of spot welding robot's electrode holder electrode cap linearity testing apparatus |
| CN209432042U (en) * | 2019-04-02 | 2019-09-24 | 成都市新津事丰医疗器械有限公司 | A kind of concentricity detecting tool of medical fluid transfer device assembly |
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2020
- 2020-11-16 CN CN202011282544.3A patent/CN112484609A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60150016A (en) * | 1984-01-17 | 1985-08-07 | Ricoh Co Ltd | Adjusting and assembling device for lens system |
| CN101907758A (en) * | 2009-06-08 | 2010-12-08 | 富士能株式会社 | The off-centre of optical element is adjusted assemble method and the eccentric apparatus for assembling of adjusting |
| CN102759864A (en) * | 2011-04-22 | 2012-10-31 | 东友精细化工有限公司 | Controlling device for preventing snaking of patterns of patterned films |
| CN103063743A (en) * | 2013-01-11 | 2013-04-24 | 浙江大学 | Moveable-feeding-mechanism-based ultrasonic flaw detection system for bent steel tubes |
| CN104330070A (en) * | 2014-11-24 | 2015-02-04 | 武汉武船机电设备有限责任公司 | Axis deviation detection device and detection method |
| CN108592782A (en) * | 2018-05-14 | 2018-09-28 | 贵州电网有限责任公司 | A kind of steam-electric generating set shafting bias on-line monitoring system and its monitoring method |
| CN208937008U (en) * | 2018-11-23 | 2019-06-04 | 陈辉 | A kind of spot welding robot's electrode holder electrode cap linearity testing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701947A (en) * | 2021-07-19 | 2021-11-26 | 湖北文理学院 | Motor eccentric fault detection device and detection method |
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Application publication date: 20210312 |