CN103292665B - A kind ofly measure the method for cable insulation thickness and degree of eccentricity and corresponding measurement mechanism - Google Patents
A kind ofly measure the method for cable insulation thickness and degree of eccentricity and corresponding measurement mechanism Download PDFInfo
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- CN103292665B CN103292665B CN201310253659.3A CN201310253659A CN103292665B CN 103292665 B CN103292665 B CN 103292665B CN 201310253659 A CN201310253659 A CN 201310253659A CN 103292665 B CN103292665 B CN 103292665B
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- 238000005259 measurement Methods 0.000 title claims abstract description 55
- 238000009413 insulation Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000004020 conductor Substances 0.000 claims description 7
- 241000446313 Lamella Species 0.000 claims description 3
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Abstract
The present invention relates to and a kind ofly measure the method for cable insulation thickness and degree of eccentricity and corresponding measurement mechanism, it comprises the following steps: (1). and choose and make cable under test test piece; (2). the test piece made is placed on portable cable measurement mechanism, determines the center of circle and fixing test piece; (3). rotate test piece and determine the thinnest point, record insulation course and the most thin and thick angle value of interior outer semiconducting layer; (4). rotate test piece and determine other any N number of location survey points, record the insulation course of each location survey point and four numerical value of interior outer semiconducting layer; (5). according to three degree of eccentricity and three irrelevances of formulae discovery cable test piece insulation course and interior outer semiconducting layer.The present invention is a kind of cable measuring method and the device thereof that can eliminate human error, raising measurement efficiency and measurement result accuracy, this measuring method solves classic method evenly still has the non-detectable difficult problem of the cable departed to the center of circle for insulation course and interior outer semiconducting layer thin and thick, has filled up the blank in cable detection field.
Description
Technical field
The present invention relates to cable insulation layer thickness, interior outer semiconducting layer thickness and degree of eccentricity detection field, especially a kind ofly measure the method for cable insulation thickness and degree of eccentricity and corresponding measurement mechanism.
Background technology
At present, use conventional apparatus and measuring method to cable insulation layer thickness, interior outer semiconducting layer thickness and eccentric measurement time there will be following problem:
1, in eccentric measurement process, manual operation is more, the measuring error causing human factor to cause is larger, as artificial judgment minimum thickness position, move test piece manually, manually estimate home position, and manual detection line (being generally 6 lines) of delimiting test piece, detection line extended line is caused to have multiple intersection point each other, thus the detection line selected by proving not is the radius by the same center of circle, causes testing result to have error, reduces and detect degree of accuracy and detection efficiency.And, only 6 detection lines that test piece marks are measured, cause survey bureau sex-limited comparatively large, can not arbitrfary point be measured.
2, the eccentric measurement result using classic method to obtain can only characterize the thin and thick degree of uniformity of cable insulation and interior outer semiconducting layer, insulation course and interior outer semiconducting layer can not be characterized to the irrelevance in the center of circle, so evenly still have to the center of circle cable departed from for insulation course and interior outer semiconducting layer thin and thick, traditional eccentric measurement method cannot detect its exception, thus cause testing result inaccurate, the problematic product of quality comes into the market, and even affects safe operation of electric network.
First manual stroke detection line in test piece is needed when 3, measuring, then measurer is used to measure corresponding detection line, in measuring process, need the projector of reading microscope or enlargement factor at least 10 times as measurement mechanism, due to these two kinds, equipment volume is large, cost is high and can not be portable, therefore cannot carry in sampling observation process, laboratory and the checkout equipment of supplier need be relied on, cannot ensure to detect degree of accuracy and efficiency.
Summary of the invention
The object of the present invention is to provide a kind of simple to operation, manual operation error can be reduced, shorten Measuring Time, improve the measurement cable insulation thickness of measurement result precision and the method for degree of eccentricity and corresponding measurement mechanism.
The object of the invention is to be realized by following technological means:
Measure a method for cable insulation thickness and degree of eccentricity, it is characterized in that: it comprises the following steps:
(1). choose and make cable under test test piece;
(2). first the test piece made is placed on the lower sheeting of portable cable measurement mechanism, then insert and rotate right side three-jaw transmission control handle, three movable jaws in mobile scroll chuck are determined to suppose the center of circle, the position of three movable jaws is necessary for recessed position, test piece edge, finally upper compressing tablet is covered in test piece, and tighten fixing;
(3). pull up right side three-jaw transmission control handle, rotate the joystick that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, according to the most minimal thickness of scaling ruler scale determination test piece under compressing tablet, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, location survey point (this point for the thinnest point), records the most thin and thick angle value of insulation course and interior outer semiconducting layer respectively;
(4). rotate the handle that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, except the thinnest point, determine the measuring position of other any radiuses, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, locate the first measurement point, four intersection points of record insulation course and interior outer semiconducting layer and measurement radius and the distance in the supposition center of circle are A from the inside to the outside
1, B
1, C
1, D
1, by that analogy, measure other N-1 (N>=5) individual radius respective value (A
2-N, B
2-N, C
2-N, D
2-N, E
2-N, F
2-N) numerical value;
(5). according to this cable test piece thickness of insulating layer: X of formulae discovery
1-N, interior semi-conductive layer thickness Y
1-N, outer semiconducting layer thickness Z
1-N, thus according to three degree of eccentricity of formulae discovery insulation course and interior outer semiconducting layer and three irrelevances:
And the (1) described step making cable under test test piece of choosing of step is:
First, take out all sheaths from insulation, extract conductor and separation layer out, careful operation, in order to avoid damage insulation, if interior outer semiconducting layer connects together with insulating sticky, then need not be removed;
Secondly, each test specimen is made up of a heat insulating lamella, and application proper implements cuts thin slice along the plane with conductor axis perpendicular, and the core without sheath flat flaxible wire should not separate.
A kind of measurement mechanism of the method for measurement cable insulation thickness according to claim 1 and degree of eccentricity, it is characterized in that: the (2) described portable cable measurement mechanism of step comprises base plate, fixed cover, vernier caliper part and gear and rotates fixed conveyor part, and fixed cover is arranged on base plate.
And, vernier caliper part comprises main scale, is attached to slidable vernier and scaling ruler on main scale, main scale is arranged on fixed cover, base plate installs a leading screw, the lower end of vernier is connected with a joggle on this leading screw, and a moved end blade installed by vernier, and scaling ruler is arranged on fixed cover, this scaling ruler and main scale be arranged in parallel, and scaling ruler is positioned at the front end of moved end blade.
And an elongated hole is all made at the two ends, left and right of described main scale, and the two ends, left and right of main scale are all arranged on holder by elongated hole and screw, these two holders are installed on fixed cover; Leading screw is ball-screw, and its two ends, left and right are all arranged on base plate by bearing and bearing seat, and wherein one end of leading screw connects a control handle; Moved end blade is horizontally disposed with, and its blade is towards cable test piece to be detected.
And, gear rotates fixed conveyor part and comprises scroll chuck and transmission gear, scroll chuck is arranged between fixed cover and base plate, the sidewall of scroll chuck installs one for driving the transmission gear of three movable jaw movements, and this transmission gear is driven by the spacing driving lever be arranged on fixed cover sidewall; The outer rim of scroll chuck is coaxially fixedly mounted with parcel, and the sidewall of fixed cover installs a gear shaft, and a driving gear is installed in the front end of this gear shaft, and the parcel of this driving gear and scroll chuck outer rim is connected with a joggle; The bottom of scroll chuck fixedly mounts a supporting plate, the lower end of this supporting plate is rotatably installed on base plate, this supporting plate is integrally made a vertical rotating shaft, this rotating shaft is installed in the axle center of scroll chuck, and the upper end of rotating shaft adopts dismantled and assembled mode coaxial package lower sheeting and a upper compressing tablet.
And, described spacing driving lever comprises locating sleeve and hexagonal bearing pin, locating sleeve is arranged on the madial wall of fixed cover, hexagonal bearing pin level is installed in locating sleeve, hexagonal bearing pin outside surface is shaped with two locating slots, locating sleeve is installed one for being inserted into the spring detent of the threaded ball in locating slot; A joystick be positioned at outside fixed cover is installed in the rear end of hexagonal bearing pin; Transmission gear is shaped with an interior hexagonal slotted eye corresponding with hexagonal bearing pin, the front end of hexagonal bearing pin is inserted in interior hexagonal slotted eye.
And the madial wall of described fixed cover installs a fixed cover, and gear shaft is installed in fixed cover by bearing level, and a control handle is installed in the rear end of gear shaft, and this control handle is positioned at the outside of fixed cover, and jackscrew installed by this control handle.
And mark line is all made in described fixed cover and scroll chuck surface; Described upper compressing tablet and lower sheeting adopt wing screw to be arranged in rotating shaft, and on this, lower sheeting is all positioned at top outside fixed cover.
And fixed cover, vernier caliper part and gear are rotated fixed conveyor part cover outer cover within it by spiral-lock one on described base plate.
Advantage of the present invention and good effect are:
1, this measuring method have employed supposition center of circle method, due to cable conductor in stranding process in theory the circle determined of outward flange close to positive round, so as the reference value measured, valid data can be obtained, ensure that the accuracy of measurement result according to its supposition center of circle determined.
2, this measuring method is on the basis determining the supposition center of circle, and add the measurement index of an irrelevance, namely the interior outer rim maximum radius of random layer and the difference of least radius, take absolute value, divided by the result of radius mean value.This value reflects the departure degree in each layer and the center of circle, and solve and evenly still have to the center of circle cable departed from for insulation course and interior outer semiconducting layer thin and thick, traditional detection degree of eccentricity method is the problem that cannot detect its exception.The theoretical optimal value of this measured value is 0.The qualified threshold value of nominal can be delimited according to actual needs.Therefore use this device can improve rapidly measuring speed and improve measurement precision.
3, the test piece in this measuring method rotates and adopts rotating shaft type of drive, which raises stability and the accuracy of test piece rotation, further ensures the accuracy of final detection result.
4, the measurement mechanism used in this measuring method is a kind of portable cable degree of eccentricity detecting instrument of applicable Site Detection, its whole height only has about 70mm (even can be less), free voltage grade (comprising the cable of low-voltage-grade and ultrahigh-voltage voltage grade) can be realized, its volume is little, lightweight, coordinate portable high magnified glass to use simultaneously, microscope and projector can be departed to the constraint of measuring process, break away from the dependence to supplier's detecting instrument, improve measuring speed and improve measurement precision, simplified measurement program, eliminate the personal error of traditional measurement.
5, measurement mechanism controls the folding of three movable jaws in scroll chuck by transmission knob, the effect in the free voltage grade cable internal diameter supposition center of circle, location can be played, thus the problem solving decentraction in traditional measurement process, the accuracy that decreases manual operation error, improve measurement result.
6, spacing driving lever can be plugged by interior hexagonal location by measurement mechanism fast, thus achieves the switching between supposition center of circle positioning and selecting test point shelves.After switching, realize horizontally rotating of compressing tablet and test piece by the rotation of rotating shaft, thus the test value of any radius, any amount can be chosen, improve accuracy and the measuring speed of measurement result.
7, this measuring method and device is used at utmost can to reduce human factor to the impact of measuring, as avoided manually directly controlling test piece, can realize accurately locating tested point fast, can stable for test piece be fixed on position to be measured, measuring error caused by the human factors such as detection line width or viewing angle can be avoided.
8, the vernier caliper part used in this measuring method is non-material object card, and its fixed end is separated with moved end, and slide calliper rule are separated with material object, drives vernier and moved end blade moving, carry out the range observation of conplane diverse location by leading screw.Vernier caliper is by the corresponding relation of main scale, scaling ruler and moved end blade, and the adjustable elongated hole of main scale can be calibrated this chi at any time, and its accuracy of detection is silk.In addition, the moved end blade in vernier caliper is for being horizontally disposed with, and its good stability, can not occur measured deviation because of rocking of measurement mechanism, but also overcomes the defect affecting reading sight line when blade is vertically placed, and improves the accuracy of reading.
9, the present invention a kind ofly can reduce human error, simplified measurement flow process to greatest extent, improves and measure efficiency, improve the measurement cable insulation thickness of measurement result accuracy and the method for degree of eccentricity and corresponding measurement mechanism, this measuring method and device simple to operation, especially solve classic method and evenly still have the non-detectable difficult problem of the cable departed to the center of circle for insulation course and interior outer semiconducting layer thin and thick, fill up the blank in cable detection field.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the vertical view (omission outer cover) of Fig. 1;
Fig. 3 is the schematic perspective view (omitting outer cover and fixed cover) of Fig. 1;
Fig. 4 is the front view of vernier caliper part;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the front view that cable under test section rotates fixed conveyor part;
Fig. 7 is the vertical view of Fig. 6.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing; It should be noted that, the present embodiment is narrative, is not determinate, can not limit protection scope of the present invention with this.
For the ease of understanding, first the structure of the Portable type measurement unit for cable measurement used in cable insulation thickness and eccentric measurement method is described, it comprises base plate 4, fixed cover 3, vernier caliper part 2 and gear and rotates fixed conveyor part 5, and fixed cover is arranged on base plate.Spiral-lock outer cover 1 on base plate, fixed cover, vernier caliper part and gear can be rotated fixed conveyor part cover within it by this outer cover.Below rotate fixed conveyor part to vernier caliper part and gear to be respectively described in detail:
1, vernier caliper part
Vernier caliper part comprises main scale 7 and is attached to slidable vernier 9 on main scale, an elongated hole 14 is all made at the two ends, left and right of main scale, the two ends, left and right of main scale are all arranged on holder 10 by elongated hole and screw, these two holders are installed on fixed cover, for the accurate location and check of vernier caliper.With test piece to be measured, the origin position of main scale both can suppose that the center of circle was located on the same line, also can suppose that the center of circle is not point-blank with test piece to be measured.
Base plate installs a leading screw 8 by bearing seat 6 and bearing, and this leading screw is ball-screw, and wherein one end of leading screw connects a control handle 11, for the accurate measurement and positioning of vernier caliper, jackscrew is installed by this control handle.The lower end of vernier is connected with a joggle on leading screw.
A moved end blade 13 installed by vernier, and this moved end blade is horizontally disposed with, and its blade is towards cable test piece to be detected.This vernier caliper also comprises a scaling ruler 12, and this scaling ruler is arranged on fixed cover, and for vernier caliper location and check, this scaling ruler and main scale be arranged in parallel, and scaling ruler is positioned at the front end of moved end blade.When moved end blade overlaps with center, fixed end (namely gear rotates the axle center 35 of scroll chuck in fixed conveyor part), vernier caliper reading is 0.
2, gear rotates fixed conveyor part
Comprise scroll chuck 22 and transmission gear 31, scroll chuck is arranged between fixed cover and base plate.
The sidewall of scroll chuck installs the transmission gear for driving the movement of three movable jaws 36, this transmission gear is driven by the spacing driving lever be arranged on fixed cover sidewall, its concrete structure is: spacing driving lever comprises locating sleeve 26 and hexagonal bearing pin 25, locating sleeve is arranged on the madial wall of fixed cover, hexagonal bearing pin level is installed in locating sleeve, hexagonal bearing pin outside surface is shaped with two locating slots 28, locating sleeve is installed one for being inserted into the spring detent 27 of the threaded ball in locating slot.A control handle 29 be positioned at outside fixed cover is installed in the rear end of hexagonal bearing pin, and this joystick installs jackscrew.Transmission gear is shaped with an interior hexagonal slotted eye 30 corresponding with hexagonal bearing pin, the front end of hexagonal bearing pin is inserted in interior hexagonal slotted eye.For the ease of the quick and precisely location of hexagonal bearing pin, all make a mark line 33 and 34 on the surface of fixed cover and scroll chuck.
The madial wall of fixed cover installs a fixed cover 17, scroll chuck outer rim coaxial package parcel 24, a gear shaft 16 is installed by bearing level in fixed cover, a driving gear 18 is installed in the front end of this gear shaft, the parcel of this driving gear and scroll chuck outer rim is connected with a joggle, the joystick 15 that one is positioned at the outside of fixed cover is installed in the rear end of gear shaft, and a jackscrew installed by this control handle.
The bottom of scroll chuck fixedly mounts a supporting plate 32, the lower end of this supporting plate is rotatably installed on base plate by bearing, this supporting plate is integrally made a vertical rotating shaft 21, this rotating shaft is installed in the axle center of scroll chuck, the upper end of rotating shaft adopts dismantled and assembled mode coaxial package lower sheeting 23 and a upper compressing tablet 19, on this, lower sheeting is all positioned at top outside fixed cover, and test piece 20 to be measured is positioned between lower sheeting.As shown in Figure 1, upper compressing tablet and lower sheeting adopt wing screw to be arranged in rotating shaft, therefore according to the difference of test piece to be measured, can be taken off by upper lower sheeting change from rotating shaft.
Measure a method for cable insulation thickness and degree of eccentricity, it comprises the following steps:
(1). choose and make cable under test test piece;
First, take out all sheaths from insulation, extract conductor and separation layer out, careful operation, in order to avoid damage insulation, if interior outer semiconducting layer connects together with insulating sticky, then need not be removed;
Secondly, each test specimen is made up of a heat insulating lamella, and application proper implements cuts thin slice along the plane with conductor axis perpendicular, and the core without sheath flat flaxible wire should not separate.
(2). first the test piece made is placed on the lower sheeting of portable cable measurement mechanism, then insert and rotate right side three-jaw transmission control handle, three movable jaws in mobile scroll chuck are determined to suppose the center of circle, the position of three movable jaws is necessary for recessed position, test piece edge, finally upper compressing tablet is covered in test piece, and tighten fixing;
(3). pull up right side three-jaw transmission control handle, rotate the joystick that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, according to the most minimal thickness of scaling ruler scale determination test piece under compressing tablet, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, location survey point (this point for the thinnest point), records the most thin and thick angle value of insulation course and interior outer semiconducting layer respectively;
(4). rotate the handle that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, except the thinnest point, determine the measuring position of other any radiuses, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, locate the first measurement point, four intersection points of record insulation course and interior outer semiconducting layer and measurement radius and the distance in the supposition center of circle are A from the inside to the outside
1, B
1, C
1, D
1, by that analogy, measure other N-1 (N>=5) individual radius respective value (A
2-N, B
2-N, C
2-N, D
2-N, E
2-N, F
2-N) numerical value;
(5). according to this cable test piece thickness of insulating layer: X of formulae discovery
1-N, interior semi-conductive layer thickness Y
1-N, outer semiconducting layer thickness Z
1-N, thus according to three degree of eccentricity of formulae discovery insulation course and interior outer semiconducting layer and three irrelevances:
Claims (10)
1. measure a method for cable insulation thickness and degree of eccentricity, it is characterized in that: it comprises the following steps:
(1). choose and make cable under test test piece;
(2). first the test piece made is placed on the lower sheeting of portable cable measurement mechanism, then insert and rotate right side three-jaw transmission control handle, three movable jaws in mobile scroll chuck are determined to suppose the center of circle, the position of three movable jaws is necessary for recessed position, test piece edge, finally upper compressing tablet is covered in test piece, and tighten fixing;
(3). pull up right side three-jaw transmission control handle, rotate the joystick that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, according to the most minimal thickness of scaling ruler scale determination test piece under compressing tablet, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, the thinnest point of location survey, records the most thin and thick angle value of insulation course and interior outer semiconducting layer respectively;
(4). rotate the handle that left side controls vertical rotating shaft, rotating shaft drives test piece to rotate, except the thinnest point, determine the measuring position of other any radiuses, the leading screw knob of turn vernier caliper, the vernier of moving cursor slide calliper rule and moved end blade, assisted by magnifier, locate the first measurement point, four intersection points of record insulation course and interior outer semiconducting layer and measurement radius and the distance in the supposition center of circle are A from the inside to the outside
1, B
1, C
1, D
1, by that analogy, measure other N-1 radius respective value A
2-N, B
2-N, C
2-N, D
2-N, E
2-N, F
2-Nnumerical value, N>=5 in an above-mentioned N-1 radius;
(5). according to this cable test piece thickness of insulating layer: X of formulae discovery
1-N, interior semi-conductive layer thickness Y
1-N, outer semiconducting layer thickness Z
1-N, thus according to three degree of eccentricity of formulae discovery insulation course and interior outer semiconducting layer and three irrelevances:
2. a kind of method measuring cable insulation thickness and degree of eccentricity according to claim 1, is characterized in that: the (1) described step making cable under test test piece of choosing of step is:
First, take out all sheaths from insulation, extract conductor and separation layer out, careful operation, in order to avoid damage insulation, if interior outer semiconducting layer connects together with insulating sticky, then need not be removed;
Secondly, each test specimen is made up of a heat insulating lamella, and application proper implements cuts thin slice along the plane with conductor axis perpendicular, and the core without sheath flat flaxible wire should not separate.
3. the measurement mechanism for the method for measurement cable insulation thickness according to claim 1 and degree of eccentricity, it is characterized in that: the (2) described portable cable measurement mechanism of step comprises base plate, fixed cover, vernier caliper part and gear and rotates fixed conveyor part, and fixed cover is arranged on base plate.
4. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 3, it is characterized in that: vernier caliper part comprises main scale, is attached to slidable vernier and scaling ruler on main scale, main scale is arranged on fixed cover, base plate installs a leading screw, the lower end of vernier is connected with a joggle on this leading screw, and a moved end blade installed by vernier, and scaling ruler is arranged on fixed cover, this scaling ruler and main scale be arranged in parallel, and scaling ruler is positioned at the front end of moved end blade.
5. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 4, it is characterized in that: an elongated hole is all made at the two ends, left and right of described main scale, the two ends, left and right of main scale are all arranged on two holders by elongated hole and screw respectively, and these two holders are installed on fixed cover; Leading screw is ball-screw, and its two ends, left and right are all arranged on base plate by bearing and bearing seat, and wherein one end of leading screw connects a control handle; Moved end blade is horizontally disposed with, and its blade is towards cable test piece to be detected.
6. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 3, it is characterized in that: gear rotates fixed conveyor part and comprises scroll chuck and transmission gear, scroll chuck is arranged between fixed cover and base plate, the sidewall of scroll chuck installs one for driving the transmission gear of three movable jaw movements, and this transmission gear is driven by the spacing driving lever be arranged on fixed cover sidewall; The outer rim of scroll chuck is coaxially fixedly mounted with parcel, and the sidewall of fixed cover installs a gear shaft, and a driving gear is installed in the front end of this gear shaft, and the parcel of this driving gear and scroll chuck outer rim is connected with a joggle; The bottom of scroll chuck fixedly mounts a supporting plate, the lower end of this supporting plate is rotatably installed on base plate, this supporting plate is integrally made a vertical rotating shaft, this rotating shaft is installed in the axle center of scroll chuck, and the upper end of rotating shaft adopts dismantled and assembled mode coaxial package lower sheeting and a upper compressing tablet.
7. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 6, it is characterized in that: described spacing driving lever comprises locating sleeve and hexagonal bearing pin, locating sleeve is arranged on the madial wall of fixed cover, hexagonal bearing pin level is installed in locating sleeve, hexagonal bearing pin outside surface is shaped with two locating slots, locating sleeve is installed one for being inserted into the spring detent of the threaded ball in locating slot; A joystick be positioned at outside fixed cover is installed in the rear end of hexagonal bearing pin; Transmission gear is shaped with an interior hexagonal slotted eye corresponding with hexagonal bearing pin, the front end of hexagonal bearing pin is inserted in interior hexagonal slotted eye.
8. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 6, it is characterized in that: the madial wall of described fixed cover installs a fixed cover, gear shaft is installed in fixed cover by bearing level, a control handle is installed in the rear end of gear shaft, this control handle is positioned at the outside of fixed cover, and jackscrew installed by this control handle.
9. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 6, is characterized in that: mark line is all made in described fixed cover and scroll chuck surface; Described upper compressing tablet and lower sheeting adopt wing screw to be arranged in rotating shaft, and on this, lower sheeting is all positioned at top outside fixed cover.
10. a kind of measurement mechanism measuring cable insulation thickness and degree of eccentricity according to claim 6, is characterized in that: on described base plate, fixed cover, vernier caliper part and gear are rotated fixed conveyor part cover outer cover within it by spiral-lock one.
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| CN103983180B (en) * | 2014-06-12 | 2016-06-08 | 国家电网公司 | The measuring method of a kind of cable thickness/degree of eccentricity and measuring apparatus thereof |
| CN104776787B (en) * | 2015-04-20 | 2017-06-23 | 长春理工大学 | A kind of revolving body eccentric testing method |
| CN105486272B (en) * | 2015-12-19 | 2018-03-09 | 天津六〇九电缆有限公司 | A kind of cable machinery traction wheel monitoring of eccentricity device and method of testing |
| CN108592834B (en) * | 2018-06-20 | 2023-10-31 | 国网安徽省电力有限公司电力科学研究院 | Measuring device for thickness and inner diameter and outer diameter of cable insulating layer |
| CN113959298B (en) * | 2021-10-22 | 2023-11-03 | 国网天津市电力公司 | Cable thickness/eccentricity measuring method and measuring device |
| CN114199107B (en) * | 2021-12-13 | 2024-08-09 | 中国航发南方工业有限公司 | Piston type aeroengine cylinder wall thickness detection device and method |
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