CN109059734B - Cable turning radius measuring instrument for electrical engineering - Google Patents
Cable turning radius measuring instrument for electrical engineering Download PDFInfo
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- CN109059734B CN109059734B CN201810962512.4A CN201810962512A CN109059734B CN 109059734 B CN109059734 B CN 109059734B CN 201810962512 A CN201810962512 A CN 201810962512A CN 109059734 B CN109059734 B CN 109059734B
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- plate
- turning radius
- rod
- soft rubber
- memory alloy
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/255—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring radius of curvature
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a cable turning radius measuring instrument for electrical engineering, and mainly relates to the field of cable turning radius measuring devices. Comprises a plastic measuring plate and a bending device; the plastic measuring plate comprises an insulating soft rubber plate and a memory alloy plate, a plurality of lamp holders for arranging laser lamps are arranged on the front side of the insulating soft rubber plate at equal intervals, and the first hinge seat is aligned with the lamp holders; the bending device comprises a threaded rod, a sliding sleeve, a compression nut and a bending rod, wherein the two sides of the sliding sleeve are provided with second hinged seats, and the two ends of the bending rod are hinged to the first hinged seat and the second hinged seat respectively. The invention has the beneficial effects that: this device is applicable to the measurement work when power cable turning radius is great, can direct reading moreover, need not post calculation processing, and this device can be more convenient, accurate, efficient measuring cable turning radius.
Description
Technical Field
The invention relates to the field of cable turning radius measuring devices, in particular to a cable turning radius measuring instrument for electrical engineering.
Background
During the laying process of the power cable, the laying process should be performed strictly according to national standards and relevant regulations to ensure that the power cable performs normal functions. According to the clear regulation of the No. 5.1.7 of the State Standard GB50168-92 Cable line construction and acceptance Specification for Electrical installation engineering:
the minimum turning radius of the control cable (multi-core) is 10 times of the diameter of the cable;
the minimum turning radius of the rubber insulated power cable (without lead package and steel armored sheath) is 10 times of the diameter of the cable;
the minimum turning radius of the rubber insulated power cable (bare lead sheathed) is 15 times of the diameter of the cable;
the minimum turning radius of the rubber insulated power cable (steel armored sheath) is 20 times of the diameter of the cable;
the minimum turning radius of the polyvinyl chloride insulated power cable is 10 times of the diameter of the cable;
the minimum turning radius of the crosslinked polyvinyl chloride insulated power cable (single core) is 20 times of the diameter of the cable;
the minimum turning radius of the crosslinked polyvinyl chloride insulated power cable (multi-core) is 15 times of the diameter of the cable;
the minimum turning radius of the oil-impregnated paper insulated power cable (lead-coated) is 30 times of the diameter of the cable;
the minimum turning radius of the oil-immersed paper insulated power cable (lead-clad, armored and multi-core) is 15 times of the diameter of the cable;
the minimum turning radius of the oil-impregnated paper insulated power cable (lead-clad, armored and single-core) is 20 times of the diameter of the cable;
the minimum turning radius of the oil-impregnated paper insulated power cable (lead-clad, armless and multi-core) is 20 times of the diameter of the cable;
the minimum turning radius of the self-contained oil-filled (lead-clad, single-core) cable is 20 times of the diameter of the cable.
At present, the invention patent of China with the application number of 201710839495.0 discloses a power cable turning radius measuring ruler, which adopts the pythagorean theorem to obtain the turning radius of a power cable. However, this method is not suitable for measuring large radius power cable turns because of the length of the measuring scale. When the turning radius of the power cable is large, only one section of the cable turning part can be intercepted by using the measuring scale for measurement, and the measuring efficiency is reduced by measuring for many times, calculating and averaging.
Disclosure of Invention
The invention aims to provide a cable turning radius measuring instrument for electrical engineering, which is suitable for measuring a power cable with a larger turning radius, can directly read the turning radius, does not need post calculation, and can measure the turning radius of the cable more conveniently, accurately and efficiently.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a cable turning radius measuring instrument for electrical engineering comprises a plastic measuring plate and a bending device;
the plastic measuring plate comprises an insulating soft rubber plate and a memory alloy plate, the memory alloy plate is fixed on the back side of the insulating soft rubber plate, a plurality of lamp holders are arranged on the front side of the insulating soft rubber plate at equal intervals, the lamp holders are perpendicular to the front side of the insulating soft rubber plate, laser lamps are arranged on the lamp holders, a first hinge seat is arranged on the memory alloy plate on the back side of the insulating soft rubber plate, and the first hinge seat and the lamp holders are arranged in an aligned mode;
the device that bends includes threaded rod, sliding sleeve, gland nut and the pole of bending, threaded rod bottom threaded connection fixes the intermediate position at memory alloy board, the sliding sleeve can slide on the threaded rod, gland nut be located the sliding sleeve top and with threaded rod threaded connection, the sliding sleeve both sides are equipped with the articulated seat of second, the pole both ends of bending are articulated with the articulated seat of first articulated seat, second respectively.
The front side of the insulating soft rubber plate is provided with 3-9 lamp holders at equal intervals.
The lamp holder is arranged at the upper end of the insulating soft rubber plate, a plate groove is formed in the upper end of the back side of the insulating soft rubber plate, and the memory alloy plate is fixed in the plate groove.
Still measure the board including the additional, the additional is measured the board and is also constituted by insulating soft rubber board and memory alloy board, memory alloy board both ends are equipped with the slot on the plastic measurement board, memory alloy board both ends are equipped with the inserted block of pegging graft with the slot on the additional measurement board, the inserted block passes through the fix with screw after pegging graft with the slot.
The utility model discloses a hydraulic press, including the bending pole, the bending pole is equipped with the internal thread groove, the external thread groove is equipped with on the adjusting lever surface, the bending pole is the member of adjustable length, the bending pole includes outer pole and adjusts the pole, be equipped with the internal thread groove in the outer pole, adjust the pole surface and be equipped with the external screw thread with thread groove threaded connection, outer pole is articulated with the articulated seat of second, it is articulated with first articulated seat to adjust the pole.
The middle position of the memory alloy plate is provided with an internal thread seat, the bottom end of the threaded rod is in threaded connection with the internal thread seat, and the side face of the internal thread seat is provided with a measuring tape.
Compared with the prior art, the invention has the beneficial effects that:
when using, can be with plastic measuring panel bending through the device that bends, make the bottom and the cable laminating contact of plastic measuring panel laser lamp department, the laser lamp spills from the cable top, because the lamp stand perpendicular to insulating soft rubber board is preceding, so when insulating soft rubber board is bent, the lamp stand, laser lamp department is perpendicular with the tangent line that the plastic measuring panel was bent the department, so the light that the laser lamp jetted out is certain through the centre of a circle of the cable turn cambered surface department place circle at lamp stand place, every laser lamp all can jet out a light, use supplementary barn door to block light, the light spot that appears on supplementary barn door is minimum, measuring the distance between barn door and the cable using the measuring tape, this distance is exactly the turning radius of cable. The method can be used for measuring an inner angle mode and an outer angle mode. This device is applicable to the measurement work when power cable turning radius is great, can direct reading moreover, need not post calculation processing, and this device can be more convenient, accurate, efficient measuring cable turning radius.
Drawings
FIG. 1 is a schematic diagram of the detailed structure of the present invention.
FIG. 2 is a schematic view of the structure of the plasticity measurement plate of the invention.
FIG. 3 is a schematic view of the structure of an additional measuring plate according to the present invention.
Fig. 4 is a state diagram of the measuring step in the external angle mode according to the present invention.
FIG. 5 is a state diagram of the measurement step two in the external angle mode.
FIG. 6 is a diagram of a state of use of the method of the present invention in the inside corner mode.
FIG. 7 is a diagram of the second method of the present invention in the inner angle mode.
Reference numerals shown in the drawings:
1. a plastic measuring plate; 2. an insulating soft rubber plate; 3. a memory alloy plate; 4. a lamp socket; 5. a laser light; 6. a first hinge mount; 7. a threaded rod; 8. a sliding sleeve; 9. a compression nut; 10. bending the rod; 11. a second hinge mount; 12. a plate groove; 13. adding a measuring plate; 14. a slot; 15. inserting a block; 16. an outer rod; 17. adjusting a rod; 18. an internal thread seat; 19. measuring a tape measure; 20. an auxiliary light barrier.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The invention relates to a cable turning radius measuring instrument for electrical engineering, which comprises a main body structure, a plastic measuring plate 1 and a bending device, wherein the plastic measuring plate is arranged on the main body structure;
the plasticity measurement plate 1 comprises an insulating soft rubber plate 2 and a memory alloy plate 3, wherein the memory alloy plate 3 is made of titanium-nickel memory alloy, the memory alloy plate 3 can be bent into an arc-shaped plate after being stressed, and the shape can be recovered after the force application is cancelled. Memory alloy board 3 is fixed at 2 dorsal sides of insulating soft rubber board, 2 front sides of insulating soft rubber board are equidistant to be equipped with a plurality of lamp stands 4, are equipped with 5 in this embodiment, lamp stand 4 perpendicular to insulating soft rubber board 2 is preceding, be equipped with laser lamp 5 on the lamp stand 4, because lamp stand 4 perpendicular to insulating soft rubber board 2 is preceding, so when insulating soft rubber board 2 is buckled, lamp stand 4, laser lamp 5 locate and the tangent line that the board 1 was buckled to plastic measurement is perpendicular mutually, so the light that 5 jets out of laser lamp must be through the centre of a circle of the cable turn cambered surface department place circle at lamp stand 4 place. A first hinged seat 6 is arranged on the memory alloy plate 3 on the back side of the insulating soft rubber plate 2, and the first hinged seat 6 is aligned with the lamp holder 4; thus, the bending device can apply force to the plastic measuring plate 1 at the lamp holder 4 more accurately, so that the plastic measuring plate is attached to and contacted with the cable turning part.
The device that bends includes threaded rod 7, sliding sleeve 8, gland nut 9 and bending bar 10, 7 bottom threaded connection of threaded rod fix the intermediate position at memory alloy board 3, sliding sleeve 8 can slide on threaded rod 7, gland nut 9 be located 8 tops of sliding sleeve and with 7 threaded connection of threaded rod, 8 both sides of sliding sleeve are equipped with the articulated seat of second 11, bending bar 10 both ends are articulated with the articulated seat of first 6, the articulated seat of second 11 respectively. Can push down sliding sleeve 8 through revolving gland nut 9, make mouldable measuring plate 1 by the curved bending of pole 10 of buckling, the bottom and the cable laminating contact of 5 departments of the mouldable measuring plate 1 laser lamp of being buckled up to.
The lamp holder 4 is arranged at the upper end of the insulating soft rubber plate 2, the lower end of the insulating soft rubber plate 2 is matched with the diameter of the cable in length, so that the laser lamp 5 at the upper end of the insulating soft rubber plate 2 is positioned above the cable, and the cable is prevented from blocking light rays emitted by the laser lamp 5. In order to conveniently arrange the memory alloy plate 3, a plate groove 12 is arranged at the upper end of the back side of the insulating soft rubber plate 2, the memory alloy plate 3 is fixed in the plate groove 12, and the memory alloy plate 3 and the plate groove 12 are fixed through small screws or strong glue.
Still include additional measurement board 13, additional measurement board 13 also comprises insulating soft rubber board 2 and memory alloy board 3, memory alloy board 3 both ends are equipped with slot 14 on the plastic measurement board 1, memory alloy board 3 both ends are equipped with the inserted block 15 of pegging graft with slot 14 on the additional measurement board 13, inserted block 15 passes through the fix with screw after pegging graft with slot 14. When the radius of the cable is large, the additional measuring plate 13 is connected with two ends of the plastic measuring plate 1, and the additional measuring plate 13 is bent by using a set of sliding sleeve 8, a compression nut 9 and a bending rod 10 until the bottom of the laser lamp 5 of the additional measuring plate 13 is in contact with the cable in a fitting manner.
The bending rod 10 is a rod piece with adjustable length, the bending rod 10 comprises an outer rod 16 and an adjusting rod 17, an inner thread groove is formed in the outer rod 16, an outer thread connected with the thread groove is arranged on the surface of the adjusting rod 17, the outer rod 16 is hinged to a second hinging seat 11, and the adjusting rod 17 is hinged to a first hinging seat 6. The bending rod 10 is a rod with adjustable length, and the total length of the bending rod 10 can be adjusted by adjusting the extension length of the adjusting rod 17 so as to adapt to different measuring environment requirements.
An internal thread seat 18 is arranged in the middle of the memory alloy plate 3, the bottom end of the threaded rod 7 is in threaded connection with the internal thread seat 18, and a measuring tape 19 is arranged on the side face of the internal thread seat 18. The light rays emitted by the laser lamps 5 must pass through the center of a circle where the cable turning arc surface where the lamp holder 4 is located, each laser lamp 5 emits one light ray, the auxiliary light barrier 20 is used for blocking the light rays, and when the light spot appearing on the auxiliary light barrier 20 is the smallest, the distance between the light barrier and the cable is measured by using the measuring tape 19, and the distance is the turning radius of the cable.
It should be pointed out that the tail ends of the plastic measuring plate 1 and the additional measuring plate 13 are both provided with a lamp body switch for controlling the laser lamp 5, and the laser lamp 5 adopts a battery to provide electric energy.
The using method comprises the following steps:
external angle mode:
as shown in fig. 4 and 5 in the drawings of the specification; the external angle mode measurement is divided into two steps by using time, and the two steps are divided into a first step and a second step:
the method comprises the following steps:
in use, the total length of the bending bar 10 is firstly adjusted by adjusting the extension length of the adjusting bar 17, and then the outer bar 16 is hinged with the second hinge base 11, and the adjusting bar 17 is hinged with the first hinge base 6. Then push down sliding sleeve 8 through twisting gland nut 9 soon, gland nut 9 will be bent by bending rod 10 with sliding sleeve 8 articulated mouldable measuring plate 1, until the bottom and the cable laminating contact of laser lamp 5 department on the mouldable measuring plate 1 that is bent.
Step two:
keep the form when the laminating contact of laser lamp 5 department bottom and cable on the plastic measuring board 1, take out whole device from the cable and place the regional measurement of vacancy in, the light that laser lamp 5 jetted out must pass through the centre of a circle of the cable turn cambered surface department place circle at lamp stand 4 place, every laser lamp 5 all can jet out a light, use supplementary barn door 20 to block light, the light spot that appears on supplementary barn door 20 is minimum, measuring the distance between barn door and the cable using measuring tape 19, this distance is exactly the turning radius of cable.
Interior angle mode:
as shown in fig. 6 or fig. 7 in the drawings of the specification; there are two methods for the internal angle mode measurement, namely method one and method two:
the method comprises the following steps:
as shown in figure 6 of the drawings. When the space between the cable and the inner corner wall is small or 2 persons exist in the workers who are constructed together, the method does not use a bending device for measurement convenience. When using, two construction workers will be mouldable and measure board 1 bending respectively through the strength of wrist in both sides, until the bottom and the cable laminating contact of 5 departments of laser lamp on the mouldable measurement board 1 that is bent. The light rays emitted by the laser lamps 5 must pass through the center of a circle where the cable turning arc surface where the lamp holder 4 is located, each laser lamp 5 emits one light ray, the auxiliary light barrier 20 is used for blocking the light rays, and when the light spot appearing on the auxiliary light barrier 20 is the smallest, the distance between the light barrier and the cable is measured by using the measuring tape 19, and the distance is the turning radius of the cable.
The second method comprises the following steps:
as shown in figure 7 of the drawings. When the space between the cable and the inner corner wall is large or a worker who works together only has one person, the method uses a bending device for measuring convenience. In use, the total length of the bending bar 10 is firstly adjusted by adjusting the extension length of the adjusting bar 17, and then the outer bar 16 is hinged with the second hinge base 11, and the adjusting bar 17 is hinged with the first hinge base 6. Then push down sliding sleeve 8 through twisting gland nut 9 soon, gland nut 9 will be bent by bending rod 10 with sliding sleeve 8 articulated mouldable measuring plate 1, until the bottom and the cable laminating contact of laser lamp 5 department on the mouldable measuring plate 1 that is bent. The light rays emitted by the laser lamps 5 must pass through the center of a circle where the cable turning arc surface where the lamp holder 4 is located, each laser lamp 5 emits one light ray, the auxiliary light barrier 20 is used for blocking the light rays, and when the light spot appearing on the auxiliary light barrier 20 is the smallest, the distance between the light barrier and the cable is measured by using the measuring tape 19, and the distance is the turning radius of the cable.
Claims (6)
1. The utility model provides a cable turning radius measuring apparatu for electrical engineering which characterized in that: comprises a plastic measuring plate (1) and a bending device;
the plastic measuring plate (1) comprises an insulating soft rubber plate (2) and a memory alloy plate (3), the memory alloy plate (3) is fixed on the back side of the insulating soft rubber plate (2), a plurality of lamp holders (4) are arranged on the front side of the insulating soft rubber plate (2) at equal intervals, the lamp holders (4) are perpendicular to the front side of the insulating soft rubber plate (2), laser lamps (5) are arranged on the lamp holders (4), a first hinging seat (6) is arranged on the memory alloy plate (3) on the back side of the insulating soft rubber plate (2), and the first hinging seat (6) is aligned with the lamp holders (4);
the device that bends includes threaded rod (7), sliding sleeve (8), gland nut (9) and bending rod (10), threaded rod (7) bottom threaded connection fixes the intermediate position at memory alloy board (3), sliding sleeve (8) can slide on threaded rod (7), gland nut (9) are located sliding sleeve (8) top and with threaded rod (7) threaded connection, sliding sleeve (8) both sides are equipped with the articulated seat of second (11), bending rod (10) both ends are articulated with the articulated seat of first articulated seat (6), the articulated seat of second (11) respectively.
2. The cable turning radius measuring instrument for electrical engineering according to claim 1, characterized in that: the front side of the insulating soft rubber plate (2) is provided with 3-9 lamp holders (4) at equal intervals.
3. The cable turning radius measuring instrument for electrical engineering according to claim 1, characterized in that: the lamp holder (4) is arranged at the upper end of the insulating soft rubber plate (2), a plate groove (12) is formed in the upper end of the back side of the insulating soft rubber plate (2), and the memory alloy plate (3) is fixed in the plate groove (12).
4. A cable turning radius measuring instrument for electrical engineering according to claim 1 or 3, characterized in that: still measure board (13) including the additional, additional measurement board (13) also constitute by insulating soft rubber board (2) and memory alloy board (3), memory alloy board (3) both ends are equipped with slot (14) on plastic measurement board (1), memory alloy board (3) both ends are equipped with inserted block (15) of pegging graft with slot (14) on additional measurement board (13), inserted block (15) are pegged graft with slot (14) after through the fix with screw.
5. The cable turning radius measuring instrument for electrical engineering according to claim 1, characterized in that: the bending rod (10) is a rod piece with adjustable length, the bending rod (10) comprises an outer rod (16) and an adjusting rod (17), an inner thread groove is formed in the outer rod (16), an outer thread connected with the thread groove is arranged on the surface of the adjusting rod (17), the outer rod (16) is hinged to a second hinging seat (11), and the adjusting rod (17) is hinged to a first hinging seat (6).
6. The cable turning radius measuring instrument for electrical engineering according to claim 1, characterized in that: an internal thread seat (18) is arranged in the middle of the memory alloy plate (3), the bottom end of the threaded rod (7) is in threaded connection with the internal thread seat (18), and a measuring tape (19) is arranged on the side face of the internal thread seat (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962512.4A CN109059734B (en) | 2018-08-22 | 2018-08-22 | Cable turning radius measuring instrument for electrical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962512.4A CN109059734B (en) | 2018-08-22 | 2018-08-22 | Cable turning radius measuring instrument for electrical engineering |
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| Publication Number | Publication Date |
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| CN109059734A CN109059734A (en) | 2018-12-21 |
| CN109059734B true CN109059734B (en) | 2020-04-21 |
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| CN201810962512.4A Active CN109059734B (en) | 2018-08-22 | 2018-08-22 | Cable turning radius measuring instrument for electrical engineering |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839084B (en) * | 2019-01-25 | 2020-09-01 | 国家电网有限公司 | Turning radius detection device, system and method for high-voltage single-core cable |
| CN112791987A (en) * | 2021-01-15 | 2021-05-14 | 深圳市德林自动化科技有限公司 | Gastroscope snake bone canal bending degree detection device with automatic screening function |
| CN115164748B (en) * | 2022-06-30 | 2024-03-29 | 广东电网有限责任公司 | Cable turning radius determining device and method, and computer readable storage medium |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2426574B (en) * | 2005-04-29 | 2008-04-02 | Jonathan Valente | Laser micrometer |
| EP1992909B1 (en) * | 2006-02-28 | 2017-09-27 | Canon Kabushiki Kaisha | Circular shape measurement method, cylindrical shape measurement method, and cylindrical shape measurement apparatus |
| CN202836473U (en) * | 2012-09-12 | 2013-03-27 | 湖南广信电工科技股份有限公司 | Cross ruler for measuring inner and outer curvature radiuses of arc-shaped object |
| CN103727861A (en) * | 2012-10-10 | 2014-04-16 | 张瑞强 | Circular arc radius measuring ruler |
| CN103837068A (en) * | 2012-11-23 | 2014-06-04 | 天津市宝坻供电有限公司 | Method for rapid measurement of cable turning radius |
| CN203083504U (en) * | 2013-03-15 | 2013-07-24 | 中广核工程有限公司 | Cable bending radius detection tool |
| US9395170B2 (en) * | 2014-11-12 | 2016-07-19 | John I. Andersen | Adjustable radius gauge |
| CN105352412A (en) * | 2015-11-27 | 2016-02-24 | 国网北京市电力公司 | Detection scale for bending radius of cable |
| CN207335634U (en) * | 2017-05-12 | 2018-05-08 | 呼伦贝尔沐禾节水工程设备有限公司 | A kind of C-shaped laser diameter measurer |
| CN107339929B (en) * | 2017-07-31 | 2019-11-08 | 南京中车浦镇城轨车辆有限责任公司 | Cable Bending Radius measuring tool |
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