CN112629382A - Cable bending radius measuring device - Google Patents
Cable bending radius measuring device Download PDFInfo
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- CN112629382A CN112629382A CN202011430007.9A CN202011430007A CN112629382A CN 112629382 A CN112629382 A CN 112629382A CN 202011430007 A CN202011430007 A CN 202011430007A CN 112629382 A CN112629382 A CN 112629382A
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- 238000005452 bending Methods 0.000 title claims abstract description 61
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 19
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/213—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring radius of curvature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a cable bending radius measuring device for overcoming the defect of inconvenient operation in the operation of measuring the bending radius of a transmission cable, which comprises a vertical ruler and a transverse ruler, wherein the transverse ruler is provided with a plurality of clamping grooves at equal intervals; the vertical ruler and the horizontal ruler are provided with scale values. The invention also provides a device for measuring the bending radius of the cable, which comprises a vertical ruler and a transverse ruler, wherein the transverse ruler is provided with a through groove position, the width of the groove position is equal to the thickness of the vertical ruler, and the vertical ruler is vertically inserted into the groove position and is vertically connected with the transverse ruler; the vertical ruler and the horizontal ruler are provided with scale values. The invention adopts the vertical ruler and the transverse ruler to form the cross-shaped bending radius measuring tool, one end of the vertical ruler and the two ends of the transverse ruler are respectively propped against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, thus completing the measurement of the bending radius of the transmission cable and facilitating the measurement operation of the bending radius of the transmission cable.
Description
Technical Field
The invention relates to the field of power measuring devices, in particular to a cable bending radius measuring device.
Background
The insulation degree and the distribution uniformity of the internal electric field are key factors for the safe operation of the transmission cable, and the main index for representing the safe operation is the bending radius of the cable. The bending radius of the power transmission cable means that the bent cable is approximately regarded as a section of circular arc when being actually laid, the radius of the circle where the circular arc is located is the bending radius of the power transmission cable, and if the bending radius of the cable in laying construction or operation is smaller than a specified value, the internal structure of the cable can be directly damaged, insulation breakdown occurs finally, and an electric power safety accident is caused, so that the problem of measuring the bending radius exists in engineering practice in a large quantity.
The conventional device for measuring the bending radius of the cable is a power cable bending radius measuring ruler provided by CN103954206A (published 2014-07-30), and is used for measuring the arch height of an arch arc formed by a cable bending section by matching a chord and a sliding ruler, and calculating the bending radius of the cable. However, this device is inconvenient to operate and has a problem of low measurement accuracy.
Disclosure of Invention
The invention provides a cable bending radius measuring device, aiming at overcoming the defect that the cable bending radius measuring device in the prior art is inconvenient to operate.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a cable bending radius measuring device comprises a vertical ruler and a transverse ruler, wherein the transverse ruler is provided with a plurality of clamping grooves at equal intervals, the vertical ruler is clamped with the transverse ruler through the clamping grooves, and the vertical ruler is vertically connected with the transverse ruler; the vertical ruler and the horizontal ruler are provided with scale values.
In the use process, the clamping groove position where the vertical ruler is connected with the transverse ruler is selected according to the size of the bent part of the cable to be measured to form a cross-shaped bending radius measuring tool, then one end of the vertical ruler and the two ends of the transverse ruler are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read and calculated in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
Preferably, one side of the vertical ruler is provided with a one-way ratchet.
Preferably, a threaded hole is formed in a groove wall on one side of the clamping groove formed in the transverse ruler, the vertical ruler is in threaded connection with the threaded hole through the clamping groove in clamped connection with the transverse ruler through a bolt, and one end of the bolt is arranged on the side face of the vertical ruler in a pressing mode.
Preferably, the transverse ruler comprises a first transverse ruler and a second transverse ruler, and one end of the first transverse ruler is hinged to one end of the second transverse ruler through a hinge shaft.
Preferably, the first transverse ruler and the second transverse ruler are arranged in the same size.
Preferably, rollers are respectively arranged at one end of the vertical ruler and at two ends of the transverse ruler.
Preferably, one end face of the vertical ruler and the two end faces of the transverse ruler are of smooth groove structures respectively.
The invention also provides another cable bending radius measuring device which comprises a vertical ruler and a transverse ruler, wherein the transverse ruler is provided with a through groove position, the width of the groove position is equal to the thickness of the vertical ruler, and the vertical ruler is vertically inserted into the groove position and is vertically connected with the transverse ruler; the vertical ruler and the horizontal ruler are provided with scale values.
In the use process, the position of the connection between the vertical ruler and the transverse ruler is selected according to the size of the bending part of the cable to be measured, or the vertical ruler is vertically inserted into the transverse ruler and then horizontally moved along a slot position arranged on the transverse ruler to adjust the position to form a cross-shaped bending radius measuring tool, then one end of the vertical ruler and the two ends of the transverse ruler are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
Preferably, rollers are respectively arranged at one end of the vertical ruler and at two ends of the transverse ruler.
Preferably, one end face of the vertical ruler and the two end faces of the transverse ruler are of smooth groove structures respectively.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the cross-shaped bending radius measuring tool is formed by the vertical ruler and the transverse ruler, one end of the vertical ruler and two ends of the transverse ruler are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, so that the bending radius of the transmission cable can be measured, and the measurement operation of the bending radius of the transmission cable is facilitated; the vertical ruler and the transverse ruler are provided with scale values, and an operator can directly read data of the scale values and calculate according to a circumference radius calculation formula to obtain the bending radius of the power transmission cable, so that the operation efficiency and the operation precision are effectively improved.
Drawings
Fig. 1 is a schematic structural view of a cable bend radius measuring apparatus according to embodiment 1.
Fig. 2 is a partial structural view of the cable bending radius measuring apparatus according to embodiment 1.
Fig. 3 is a sectional view of the cable bending radius measuring apparatus of example 1.
Fig. 4 is a schematic view of a state of use of the cable bending radius measuring apparatus of embodiment 1.
Fig. 5 is a schematic view of cable bend radius calculation.
Fig. 6 is a partial structural view of the cable bending radius measuring apparatus according to embodiment 2.
Fig. 7 is a schematic structural view of a cable bend radius measuring apparatus according to embodiment 4.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The present embodiment provides a cable bending radius measuring apparatus, as shown in fig. 1, which is a schematic structural diagram of the cable bending radius measuring apparatus of the present embodiment.
The cable bending radius measuring device provided by the embodiment comprises a vertical ruler 1 and a horizontal ruler 2, wherein the horizontal ruler 2 is provided with a plurality of clamping grooves 21 at equal intervals, the vertical ruler 1 is clamped with the horizontal ruler 2 through the clamping grooves 21, and the vertical ruler 1 is vertically connected with the horizontal ruler 2; the vertical ruler 1 and the horizontal ruler 2 are provided with scale values.
The lateral ruler 2 of this embodiment is provided with a threaded hole 22 at one side of the groove wall of the groove 21, the vertical ruler 1 is connected with the lateral ruler 2 through the groove 21 and then is connected with the threaded hole 22 through a bolt, and one end of the bolt compresses the side surface of the vertical ruler 1.
Fig. 2 and 3 are a partial schematic view and a cross-sectional view of the cable bend radius measuring apparatus according to the present embodiment.
In this embodiment, the rollers 11/23 are respectively disposed at one end of the vertical ruler 1 and at two ends of the horizontal ruler 2, and are used for abutting against the inner circle of the cable to be measured in the using process, so that the device can move along the inner circle direction of the cable to be measured.
In another embodiment, one end of the vertical ruler 1 and two ends of the transverse ruler 2 are respectively provided with a smooth groove-shaped structure which is also used for abutting against the inner circle of the cable to be measured in the using process, so that the device can move along the direction of the inner circle of the cable to be measured conveniently.
In the specific implementation process, the position of a clamping groove 21 for connecting the vertical ruler 1 and the transverse ruler 2 is selected according to the size of a bent part of a cable to be measured, and then the vertical ruler 1 and the transverse ruler 2 are screwed and fixed through a threaded hole 22 formed in the transverse ruler 2 by using a bolt to form the cross-shaped bending radius measuring tool.
One end of the vertical ruler 1 and two ends of the transverse ruler 2 are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
Fig. 3 is a schematic view showing a use state of the cable bending radius measuring apparatus according to the present embodiment.
In the calculation process, according to the three-point co-circle principle: r2＝a2+(R-b)2And deducing a radius calculation formula:
as shown in fig. 5, the turning radius value of the cable to be measured can be calculated according to the above formula by displaying the scale values of the vertical ruler 1 and the horizontal ruler 2 on the cable bending radius measuring device.
Furthermore, the zero scale value of the vertical ruler 1 is at the top, three rows of numerical values are arranged on the vertical ruler 1, the first row is the actual size of b, and the second row and the third row are respectively bending radius values calculated according to two different values a and radius calculation formulas of the horizontal ruler 2.
Example 2
This embodiment is an improvement of the cable bend radius measuring apparatus proposed in embodiment 1.
The cable bending radius measuring device provided by the embodiment comprises a vertical ruler 1 and a horizontal ruler 2, wherein the horizontal ruler 2 is provided with a plurality of clamping grooves 21 at equal intervals, the vertical ruler 1 is clamped with the horizontal ruler 2 through the clamping grooves 21, and the vertical ruler 1 is vertically connected with the horizontal ruler 2; the vertical ruler 1 and the horizontal ruler 2 are provided with scale values.
Further, a side face of the vertical ruler 1 is provided with one-way ratchets 12, the vertical ruler 1 is inserted into the transverse ruler 2 through the clamping groove 21, the relative position of the vertical ruler 1 and the transverse ruler 2 is adjusted according to the size of a cable to be measured when the vertical ruler is vertically arranged, the relative position of the vertical ruler 1 and the transverse ruler 2 is fixed through the one-way ratchets 12 arranged on the side face of the vertical ruler 1 after adjustment is completed, and relative displacement of the vertical ruler 1 and the transverse ruler 2 in the using process is avoided.
Fig. 6 is a partial schematic structural view of the cable bend radius measuring apparatus according to the present embodiment.
In the concrete implementation process, according to the size selection perpendicular chi 1 that awaits measuring the crooked position of cable that awaits measuring and draw-in groove 21 position that 2 is connected of horizontal chi to according to the size adjustment perpendicular chi 1 that awaits measuring the crooked position of cable that awaits measuring and horizontal chi 2 relative position, the one-way ratchet 12 that sets up of perpendicular chi 1 side carries out the chucking with draw-in groove 21 when accomplishing position adjustment, can avoid erecting chi 1 and horizontal chi 2 in the use and take place relative displacement. Then, one end of the vertical ruler 1 and two ends of the transverse ruler 2 are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
Example 3
This embodiment is an improvement of the cable bend radius measuring apparatus proposed in embodiment 1 or embodiment 2.
The cable bending radius measuring device provided by the embodiment comprises a vertical ruler 1 and a horizontal ruler 2, wherein the horizontal ruler 2 is provided with a plurality of clamping grooves 21 at equal intervals, the vertical ruler 1 is clamped with the horizontal ruler 2 through the clamping grooves 21, and the vertical ruler 1 is vertically connected with the horizontal ruler 2; the vertical ruler 1 and the horizontal ruler 2 are provided with scale values.
Further, the transverse ruler 2 in the present embodiment includes a first transverse ruler 201 and a second transverse ruler 202, and one end of the first transverse ruler 201 is hinged to one end of the second transverse ruler 202 by using the hinge shaft 24. The first transverse ruler 201 and the second transverse ruler 202 are arranged in the same size, that is, the transverse ruler 2 is of a symmetrical foldable design.
In the specific implementation process, the transverse ruler 2 is selected to be a folded state or an unfolded state according to the size of the cable bending part to be measured, the two sizes are correspondingly adjusted, then the position of the clamping groove 21 for connecting the vertical ruler 1 and the transverse ruler 2 is selected according to the size of the cable bending part to be measured, then the vertical ruler 1 and the transverse ruler 2 are screwed and fixed through the threaded hole 22 formed in the transverse ruler 2 by adopting a bolt, or the transverse ruler is fixed through the one-way ratchet 12 structure arranged on one side surface of the vertical ruler 1, and a cross-shaped bending radius measuring tool is formed. Then, one end of the vertical ruler 1 and two ends of the transverse ruler 2 are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
Example 4
The present embodiment proposes another cable bend radius measuring device.
The cable bending radius measuring device in the embodiment comprises a vertical ruler 1 and a horizontal ruler 2, wherein a through groove position 25 is formed in the horizontal ruler 2, the width of the groove position 25 is equal to the thickness of the vertical ruler 1, and the vertical ruler 1 is vertically inserted into the groove position 25 and is vertically connected with the horizontal ruler 2; the vertical ruler 1 and the horizontal ruler 2 are provided with scale values.
Further, the rollers 11/23 are respectively arranged at one end of the vertical ruler 1 and two ends of the horizontal ruler 2 in the embodiment, and are used for abutting against the inner circle of the cable to be measured in the using process, so that the device can move along the direction of the inner circle of the cable to be measured conveniently.
In another embodiment, one end face of the vertical ruler 1 and two end faces of the transverse ruler 2 are respectively of a smooth groove-shaped structure and are also used for abutting against the inner circle of the cable to be measured in the using process, so that the device can conveniently move along the direction of the inner circle of the cable to be measured.
In order to fix the relative position between the vertical ruler 1 and the horizontal ruler 2, a threaded hole 22 can be formed in the groove wall on one side of the clamping groove 21 formed in the horizontal ruler 2, the vertical ruler 1 is connected with the horizontal ruler 2 through the clamping groove 21 in a clamped mode through a bolt and the threaded hole 22 in a threaded mode, and one end of the bolt is arranged on the side face of the vertical ruler 1 in a compressed mode.
In addition, can adopt a side of vertical ruler 1 to be provided with one-way ratchet 12, vertical ruler 1 inserts perpendicular setting on the horizontal ruler 2 through draw-in groove 21 and according to the relative position of measuring cable size adjustment vertical ruler 1 and horizontal ruler 2, accomplishes the relative position of fixed vertical ruler 1 and horizontal ruler 2 of 12 through the one-way ratchet that vertical ruler 1 side set up after the adjustment, avoids vertical ruler 1 and horizontal ruler 2 to take place relative displacement in the use.
In addition, can adopt the cell wall position of the trench 25 of seting up on horizontal chi 2 to be provided with magnet, and erect chi 1 and adopt metal material, the magnet that sets up on horizontal chi 2 trench 25 adsorbs erecting chi 1, and then realizes that the relative position between perpendicular chi 1 and the horizontal chi 2 is fixed.
In the specific implementation process, after the vertical ruler 1 is vertically inserted into the slot 25 formed in the transverse ruler 2, the relative position of the vertical ruler 1 and the transverse ruler 2 is adjusted according to the size of the cable bending part to be measured, and then the relative position between the vertical ruler 1 and the transverse ruler 2 is fixed. Then, one end of the vertical ruler 1 and two ends of the transverse ruler 2 are respectively abutted against the inner circle of the cable to be measured and move along the inner circle of the cable to be measured, the minimum turning radius value of the cable to be measured is read in the moving process, and then the value is compared with the maximum allowable value of the bending radius of the cable, so that whether the cable laid on site is qualified or not can be judged.
In the calculation process, according to the three-point co-circle principle: r2＝a2+(R-b)2And deducing a radius calculation formula:
as shown in fig. 5, the turning radius value of the cable to be measured can be calculated according to the above formula by displaying the scale values of the vertical ruler 1 and the horizontal ruler 2 on the cable bending radius measuring device.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A cable bending radius measuring device is characterized by comprising a vertical ruler and a transverse ruler, wherein a plurality of clamping grooves are formed in the transverse ruler at equal intervals, the vertical ruler is clamped with the transverse ruler through the clamping grooves, and the vertical ruler is vertically connected with the transverse ruler; and scale values are arranged on the vertical ruler and the horizontal ruler.
2. The cable bending radius measuring device according to claim 1, wherein one side of the vertical ruler is provided with a one-way ratchet.
3. The device for measuring the bending radius of the cable according to claim 1, wherein a threaded hole is formed in a groove wall on one side of the slot formed in the transverse ruler, the vertical ruler is in threaded connection with the threaded hole through a bolt after being clamped with the transverse ruler through the slot, and one end of the bolt is arranged to press the side surface of the vertical ruler.
4. The cable bend radius measuring device according to claim 1, wherein the lateral ruler includes a first lateral ruler and a second lateral ruler, and one end of the first lateral ruler is hinged to one end of the second lateral ruler by a hinge shaft.
5. The cable bend radius measurement device of claim 4, wherein the first and second transverse rules are sized identically.
6. The cable bending radius measuring device according to any one of claims 1 to 5, wherein rollers are provided at one end of the vertical ruler and at both ends of the horizontal ruler, respectively.
7. The apparatus for measuring the bending radius of a cable according to any one of claims 1 to 5, wherein one end surface of the vertical ruler and the two end surfaces of the horizontal ruler are respectively of a smooth groove structure.
8. A cable bending radius measuring device is characterized by comprising a vertical ruler and a transverse ruler, wherein a through groove is formed in the transverse ruler, the width of the groove is equal to the thickness of the vertical ruler, and the vertical ruler is vertically inserted into the groove and vertically connected with the transverse ruler; and scale values are arranged on the vertical ruler and the horizontal ruler.
9. The cable bending radius measuring device according to claim 8, wherein rollers are provided at one end of the vertical ruler and at both ends of the horizontal ruler, respectively.
10. The apparatus according to claim 8, wherein one end surface of the vertical ruler and the two end surfaces of the horizontal ruler are respectively of a smooth groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011430007.9A CN112629382A (en) | 2020-12-09 | 2020-12-09 | Cable bending radius measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011430007.9A CN112629382A (en) | 2020-12-09 | 2020-12-09 | Cable bending radius measuring device |
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| CN112629382A true CN112629382A (en) | 2021-04-09 |
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| CN202011430007.9A Pending CN112629382A (en) | 2020-12-09 | 2020-12-09 | Cable bending radius measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
| CN113607034A (en) * | 2021-06-30 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Arc-shaped curtain wall measuring tool and measuring method |
| CN114674197A (en) * | 2022-02-17 | 2022-06-28 | 成都飞机工业（集团）有限责任公司 | Airplane wire harness bending radius measuring method, device, equipment and medium |
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| CN109443166A (en) * | 2018-12-29 | 2019-03-08 | 山东联美弹簧科技股份有限公司 | Inside diameter gauge and the method for measuring internal diameter of the pipeline |
| CN110579162A (en) * | 2019-10-11 | 2019-12-17 | 中船黄埔文冲船舶有限公司 | Detection tool for detecting bending radius of cable |
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| WO2005090899A1 (en) * | 2004-03-19 | 2005-09-29 | Jiazheng Liang | Multifunction vernier caliper and the using method thereof |
| US20120060579A1 (en) * | 2010-09-10 | 2012-03-15 | Vince May | Bending tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
| CN113607034A (en) * | 2021-06-30 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Arc-shaped curtain wall measuring tool and measuring method |
| CN114674197A (en) * | 2022-02-17 | 2022-06-28 | 成都飞机工业（集团）有限责任公司 | Airplane wire harness bending radius measuring method, device, equipment and medium |
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Application publication date: 20210409 |