CN112414264A - Wire diameter measuring device - Google Patents
Wire diameter measuring device Download PDFInfo
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- CN112414264A CN112414264A CN202010988021.4A CN202010988021A CN112414264A CN 112414264 A CN112414264 A CN 112414264A CN 202010988021 A CN202010988021 A CN 202010988021A CN 112414264 A CN112414264 A CN 112414264A
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- clamping arm
- arm
- wire
- insulating rod
- fixed
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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
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to the technical field of measuring equipment, and discloses a wire diameter measuring device which comprises an insulating rod and a clamping mechanism, wherein the clamping mechanism comprises a fixed clamping arm and a movable clamping arm, the fixed clamping arm and the movable clamping arm are respectively connected on the insulating rod, the fixed clamping arm and the movable clamping arm are arranged in parallel and are parallel or perpendicular to the insulating rod, the movable clamping arm can move in a direction close to or far from the fixed clamping arm, the insulating rod is provided with a display mechanism for displaying the moving distance of the movable clamping arm, when in measurement, the insulating rod is moved, so that a wire enters between the fixed clamping arm and the movable clamping arm from a clamping port formed between the fixed clamping arm and the movable clamping arm to drive the movable clamping arm to move for a certain distance, the distance between the fixed clamping arm and the movable clamping arm is the wire diameter of the wire, the distance between the movable clamping arm and the initial distance between the movable clamping arm and the fixed clamping arm are obtained through the, the operation is convenient, the fixed clamping arm and the movable clamping arm are clamped with the lead, and the measurement is accurate.
Description
Technical Field
The invention relates to the technical field of measuring equipment, in particular to a wire diameter measuring device.
Background
In daily power distribution operation and maintenance work, the aspects of rush repair of continuous wires, circuit net rack planning, relay protection value setting, circuit current limiting, power supply transferring mode calculation, completion acceptance check and the like relate to the measurement of the wire diameter of the wires, but for the wires in live operation, due to the reasons of historical data loss, inaccurate electronization transfer and the like, the wires can be generally only carried out through visual inspection, and larger errors exist. If need accurate result, often need apply for live working cooperation, simple measurement work originally, because safety problem, need accomplish the loaded down with trivial details workflow of live working, manpower and materials consumption is big, work efficiency is low.
Chinese utility model patent CN206740045U (the public day is 2017 12 months 12 days) discloses a wire line footpath measures specialized tool, at least including measuring board and insulator spindle, it is the platelike body to measure the board, and platelike body edge is equipped with a plurality of measuring mouths, measure the notch of mouth for setting up at the measurement flange edge, this notch is "U" type, and relative both sides are parallel to each other promptly, and respectively measure the distance between the relative two parallel sides of mouth different, the one end of insulator spindle is the free end, and the other end passes through adjustment mechanism and is connected with the measurement board, it can rotate relatively around adjustment mechanism with the insulator spindle to measure the board. According to the patent, the wire is clamped into the side measuring port, and when the measured wire can be just clamped into a certain measuring port, the wire diameter is the wire diameter arranged corresponding to the measuring port. However, the measuring port of the patent is well measured in advance, only the wire with a specific wire diameter can be measured, the application range is limited, the wire frame is arranged in the air, the wire can be clamped into a larger measuring port, an operator cannot accurately judge which measuring port is just clamped into the measuring port when standing on the ground, in addition, the wire needs to be clamped into a plurality of measuring ports, the efficiency is low, the labor intensity of the operator is high, and the operation is inconvenient.
Disclosure of Invention
The invention aims to provide a wire diameter measuring device for a wire, which is convenient to operate and accurate in measurement.
In order to achieve the above purpose, the present invention provides a wire diameter measuring device, which comprises an insulating rod and a clamping mechanism, wherein the clamping mechanism comprises a fixed clamping arm and a movable clamping arm, the fixed clamping arm and the movable clamping arm are respectively connected to the insulating rod, the fixed clamping arm and the movable clamping arm are arranged in parallel and are parallel or perpendicular to the insulating rod, the movable clamping arm can move in a direction close to or away from the fixed clamping arm, and a display mechanism for displaying a moving distance of the movable clamping arm is arranged on the insulating rod.
Preferably, the clamping mechanism further comprises a compression spring, two ends of the compression spring are respectively connected with one side of the movable clamping arm, which is far away from the fixed clamping arm, and the insulation rod, and the length direction of the compression spring is perpendicular to the fixed clamping arm.
According to the preferable scheme, the display mechanism comprises a measuring line and a scale, the scale is arranged at the bottom of the insulating rod, a first wire outlet is formed in the bottom surface of the insulating rod, a second wire outlet opposite to the movable clamping arm is formed in the top of the insulating rod, a wire passing cavity communicated with the first wire outlet and the second wire outlet is formed in the insulating rod, the measuring line is arranged in the wire passing cavity, and the top end of the measuring line extends out of the insulating rod through the second wire outlet and is connected with the movable clamping arm.
Preferably, the display mechanism further comprises a display sleeve, the display sleeve is a transparent cylinder, the scale is arranged on the display sleeve, and the display sleeve is detachably sleeved at the bottom of the insulating rod.
Preferably, the measuring line passes through the compression spring and is connected with the movable clamping arm, the connection position of the measuring line is located in the center of the connection position of the compression spring and the movable clamping arm, and the second wire outlet hole is located in the center of the connection position of the compression spring and the insulating rod.
Preferably, the bottom end of the measuring line is provided with a heavy hammer.
According to the preferable scheme, a connecting arm is arranged at the top end of the insulating rod, the fixed clamping arm is connected with the connecting arm, the movable clamping arm is located between the fixed clamping arm and the insulating rod, the movable clamping arm is an elastic sheet, and one end of the movable clamping arm is connected with the insulating rod.
As the preferred scheme, the movable clamping arm comprises a connecting part and a clamping part, the two ends of the connecting part are respectively connected with the clamping part and the insulating rod, the connecting part is of an arc-shaped structure, the clamping part is of a linear structure, and the clamping part is parallel to the fixed clamping arm.
Preferably, a clamping opening formed between the fixed clamping arm and the movable clamping arm is in a bell mouth shape.
Preferably, the insulating rod comprises a first rod body and a second rod body, the length of the second rod body is larger than that of the first rod body, the clamping mechanism is connected to the first rod body, and the first rod body is detachably connected with the second rod body.
Compared with the prior art, the invention has the beneficial effects that:
the invention can extend the clamping mechanism to the wire erected in the air through the insulating rod, can carry on the measurement work without ascending a height, while measuring, move the insulating rod, make the wire enter between fixed clamp arm and movable clamp arm from the grip hold formed between fixed clamp arm and movable clamp arm, because the entry of the wire, drive the movable clamp arm to move certain distance, the distance between movable clamp arm and the fixed clamp arm is the wire diameter of the wire at this moment, obtain the distance of the movable clamp arm through the display mechanism, add the distance and initial distance of the movable clamp arm and fixed clamp arm and can get the wire diameter of the wire, while operating, only need move the insulating rod once to make the wire card insert between fixed clamp arm and movable clamp arm, easy to operate, and fixed clamp arm and movable clamp arm clamp with the wire, measure accurately.
Drawings
Fig. 1 is a schematic structural diagram of a wire diameter measuring device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a wire diameter measuring device according to a second embodiment of the present invention.
In the figure, 1-insulating rod; 101-a first stick; 102-a second stick body; 2-fixing the clamping arm; 3-movable clamping arms; 301-a connecting portion; 302-a clamping portion; 4-a compression spring; 5-measuring line; 6-a scale; 7-display sleeve; 8-weight dropper; 9-a linker arm; 10-connecting columns; 11-fixed pulley.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, a wire diameter measuring device according to a preferred embodiment of the present invention includes an insulating rod 1 and a clamping mechanism, the clamping mechanism includes a fixed arm 2 and a movable arm 3, the fixed arm 2 and the movable arm 3 are respectively connected to the insulating rod 1, the fixed arm 2 is parallel to the movable arm 3 and parallel to the insulating rod 1, the movable arm 3 is capable of moving in a direction approaching to or departing from the fixed arm 2, and the insulating rod 1 is provided with a display mechanism for displaying a moving distance of the movable arm 3. In the embodiment, the clamping mechanism can be extended to the position of the wire erected in the air through the insulating rod 1, the measurement can be carried out without ascending a height, during measurement, the insulating rod 1 is moved to enable a lead to enter between the fixed clamping arm 2 and the movable clamping arm 3 from a clamping opening formed between the fixed clamping arm 2 and the movable clamping arm 3, as the lead enters, the movable clamping arm 3 is driven to move for a certain distance, and the distance between the fixed clamping arm 2 and the movable clamping arm 3 is the wire diameter of the lead, the distance of the movable clamping arm 3 is obtained through the display mechanism, the wire diameter of the lead can be obtained by adding the distance and the initial distance of the movable clamping arm 3 and the fixed clamping arm 2, when the operation, only need remove 1 insulator spindle and make the wire card go into between fixed arm lock 2 and the activity arm lock 3, convenient operation, fixed arm lock 2 and activity arm lock 3 press from both sides mutually with the wire moreover, measure the accuracy.
Further, fixture still includes compression spring 4, compression spring 4's both ends deviate from one side of fixed arm lock with activity arm lock 3 respectively, insulator spindle 1 is connected, and compression spring 4's length direction perpendicular to fixed arm lock 2, when measuring, compression spring 3 enables fixed arm lock 2 and activity arm lock 3 and tightly offsets with the wire, do not leave the space, further guarantee measuring result's accuracy, and can be after measuring the completion, the wire comes out from fixed arm lock 2 and activity arm lock 3, activity arm lock 3 can resume the normal position, make things convenient for next time to measure.
Further, the display mechanism of this embodiment includes measuring line 5 and scale 6, and the bottom of insulator spindle 1 is located to scale 6, and the bottom surface of insulator spindle 1 is equipped with first wire hole, and the top of insulator spindle 1 is equipped with the second wire hole relative with activity arm lock 3, is equipped with the line chamber of crossing of first wire hole of intercommunication and second wire hole in the insulator spindle 1, and measuring line 3 locates the line intracavity, and the top of measuring line 5 stretches out insulator spindle 1 through the second wire hole and is connected with activity arm lock 3 outward. When the movable clamping arm 3 moves, the distance between the movable clamping arm 3 and the insulating rod 1 can be changed, the measuring line 5 connected with the movable clamping arm 3 can move along with the movable clamping arm, the descending or ascending height of the bottom end of the measuring line 5 is observed at the bottom of the insulating rod 1, the moving distance of the movable clamping arm 3 can be obtained, and the ascending or descending height of the bottom end of the measuring line 5 can be directly read through the ruler 6. If the fixed clamping arm 2 is positioned between the movable clamping arm 3 and the insulating rod 1, the bottom end of the measuring wire 5 can ascend along with the movement of the movable clamping arm 3 during measurement; if the movable clamping arm 3 is located between the fixed clamping arm 2 and the insulating rod 1, the bottom end of the measuring wire 5 will descend along with the movement of the movable clamping arm 3. The movable clamping arm 3 of the embodiment is positioned between the fixed clamping arm 2 and the insulating rod 1, so that the connection of the measuring wire 5 is more convenient and the structure is simplified. It should be noted that the display mechanism may also perform direct measurement of the moving distance of the movable clamp arm 3 or measurement of the distance between the fixed clamp arm 2 and the movable clamp arm 3 by a displacement sensor or the like. The display mechanism of the embodiment adopts a mechanical structure, reduces the cost and can visually detect whether the device is invalid or misaligned. In addition, the fixed pulley 11 is arranged in the wire passing cavity of the embodiment, and the measuring wire 5 is wound around the fixed pulley 11 to guide the movement of the measuring wire 5.
Further, display mechanism still includes and shows sleeve 7 shows that sleeve 7 is transparent barrel, and scale 6 locates and shows on sleeve 7, shows that sleeve 7 detachably suit is in 1 bottom of insulator spindle, can make the bottom of measuring wire 5 stretch out from the second wire hole and get into and show sleeve 7, and the reading is directly perceived. Can make display sleeve 6 dismantle when not measuring and accomodate, avoid scale 6 impaired and influence the use.
Further, the measuring line 5 of this embodiment passes through that pressure spring 4 is connected with movable arm lock 3 and the junction is located the center of pressure spring 4 with movable arm lock 3 junction, and the second wire outlet is located the center of the junction of pressure spring 4 and insulating rod 1, can prevent that measuring line 5 from twineing on pressure spring 4, makes measuring line 5 remove smoothly, prevents that the measuring result from makeing mistakes. In addition, the bottom end of the measuring line 5 is provided with a heavy hammer 8, so that the bottom end of the measuring line 5 is in a straightening state when reading on the scale 6, the reading is accurate, and the measuring result is ensured.
Optionally, a connecting arm 9 is disposed at the top end of the insulating rod 1 in this embodiment, the fixed clamp arm 2 is connected to the connecting arm 9, the movable clamp arm 3 is located between the fixed clamp arm 2 and the insulating rod 1, the movable clamp arm 3 is a spring, and one end of the movable clamp arm 3 is connected to the insulating rod 1, so that when a wire enters between the fixed clamp arm 2 and the movable clamp arm 3, the movable clamp arm 3 moves to be close to the insulating rod 1, and the spring structure enables the movable clamp arm 2 to clamp the wire, so as to ensure that the distance between the fixed clamp arm 2 and the movable clamp arm 3 is the wire diameter of the wire, and the wire can be returned to; in addition, the elastic sheet structure can also facilitate the wire to enter between the fixed clamping arm 2 and the movable clamping arm 3, and when the movable insulating rod 1 presses the clamping mechanism to the wire, the elastic sheet structure of the movable clamping arm 3 is stressed and deformed to enable the wire to enter. The activity arm lock 3 of this embodiment includes connecting portion 301 and clamping part 302, the both ends of connecting portion 301 respectively with clamping part 302, insulating rod 1 is connected, connecting portion 301 is the arc structure, clamping part 302 is the linear structure, clamping part 302 is parallel with fixed arm lock 2, connecting portion 302 is crooked to being close to fixed arm lock 2, arc structure 301 makes connecting portion 301 have great deformation space and can make things convenient for the wire to get into, and can make form a centre gripping mouth that the distance is greater than the distance between clamping part 302 and the fixed arm lock 2 between the centre gripping tip of connecting portion 301 and fixed arm lock 2, make things convenient for the wire to get into more.
Further, the centre gripping mouth that forms between fixed arm lock 2 of this embodiment and the activity arm lock 3 is horn mouth form, and the centre gripping tip of fixed arm lock 2 of this embodiment and activity arm lock 3 is crooked toward opposite direction, makes things convenient for the wire to get into between fixed arm lock 2 and the activity arm lock 3. Further, the insulating rod 1 comprises a first rod body 101 and a second rod body 102, the length of the second rod body 102 is larger than that of the first rod body 101, the clamping mechanism is connected to the first rod body 101, and the first rod body 101 and the second rod body 102 are detachably connected, so that the clamping mechanism can be detached and can be independently stored to avoid damage. In this embodiment, the first rod 101 and the second rod 102 are respectively inserted into the connecting column 10 having an insertion hole to achieve connection.
Example two
The difference between this embodiment and the first embodiment is that the fixed clamp arm 2 of this embodiment is disposed parallel to the movable clamp arm 3 and perpendicular to the insulating rod 1, and the direction of disposing the components of the clamping mechanism of this embodiment is perpendicular to the direction of disposing the clamping mechanism of the first embodiment. Other structures of this embodiment are the same as those of the first embodiment, and are not described herein.
To sum up, the embodiment of the present invention provides a wire diameter measuring device, which can extend a clamping mechanism to a wire erected in the air through an insulating rod 1, and can perform a measuring operation without ascending a height, during the measuring operation, the insulating rod 1 is moved to enable the wire to enter between a fixed clamping arm 2 and a movable clamping arm 3 from a clamping port formed between the fixed clamping arm 2 and the movable clamping arm 3, the movable clamping arm 3 is driven to move a certain distance due to the entering of the wire, at this time, the distance between the fixed clamping arm 2 and the movable clamping arm 3 is the wire diameter of the wire, the distance of the movable clamping arm 3 is obtained through a display mechanism, the wire diameter of the wire can be obtained by adding the distance and the initial distance between the movable clamping arm 3 and the fixed clamping arm 2, during the operation, the insulating rod 1 is moved once to enable the wire to be clamped between the fixed clamping arm 2 and the movable clamping arm 3, the operation is convenient, and the fixed clamping arm 2 and the movable clamping arm 3, the measurement is accurate.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a wire line footpath measuring device, its characterized in that, includes insulator spindle (1) and fixture, fixture includes fixed arm lock (2) and activity arm lock (3), fixed arm lock (2) with activity arm lock (3) are connected respectively on insulator spindle (1), fixed arm lock (2) with activity arm lock (3) parallel arrangement and with insulator spindle (1) is parallel or perpendicular, activity arm lock (3) can be followed and are close to or keep away from the direction of fixed arm lock (2) removes, be equipped with on insulator spindle (1) and be used for showing the display mechanism of activity arm lock (3) displacement distance.
2. The wire diameter measuring device according to claim 1, wherein the clamping mechanism further comprises a compression spring (4), two ends of the compression spring (4) are respectively connected with one side of the movable clamping arm (3) away from the fixed clamping arm (2) and the insulating rod (1), and the length direction of the compression spring (4) is perpendicular to the fixed clamping arm (2).
3. The wire diameter measuring device of claim 1, wherein the display mechanism comprises a measuring wire (5) and a scale (6), the scale (6) is arranged at the bottom of the insulating rod (1), a first wire outlet is arranged on the bottom surface of the insulating rod (1), a second wire outlet opposite to the movable clamping arm (3) is arranged at the top of the insulating rod (1), a wire passing cavity communicated with the first wire outlet and the second wire outlet is arranged in the insulating rod (1), the measuring wire (5) is arranged in the wire passing cavity, and the top end of the measuring wire (5) extends out of the insulating rod (1) through the second wire outlet and is connected with the movable clamping arm (3).
4. The wire diameter measuring device of claim 3, wherein the display mechanism further comprises a display sleeve (7), the display sleeve (7) is a transparent cylinder, the scale (6) is arranged on the display sleeve (7), and the display sleeve (7) is detachably sleeved at the bottom of the insulating rod (1).
5. The wire diameter measuring device of claims 2 and 3, wherein the measuring wire (5) passes through the compression spring (4) to be connected with the movable clamping arm (3) at the center of the connection between the compression spring (4) and the movable clamping arm (3), and the second wire outlet hole is located at the center of the connection between the compression spring (4) and the insulating rod (1).
6. The wire diameter measuring device according to claim 4, wherein a weight (8) is provided at the bottom end of the measuring wire (5).
7. The wire diameter measuring device according to claim 4, wherein a connecting arm (9) is arranged at the top end of the insulating rod (1), the fixed clamping arm (2) is connected with the connecting arm (9), the movable clamping arm (3) is located between the fixed clamping arm (2) and the insulating rod (1), the movable clamping arm (3) is a spring plate, and one end of the movable clamping arm (3) is connected with the insulating rod (1).
8. The wire diameter measuring device of claim 7, wherein the movable clamping arm (3) comprises a connecting portion (301) and a clamping portion (302), two ends of the connecting portion (301) are respectively connected with the clamping portion (302) and the insulating rod (1), the connecting portion (301) is of an arc-shaped structure, the clamping portion (302) is of a linear structure, and the clamping portion (302) is parallel to the fixed clamping arm (2).
9. The wire diameter measuring device according to claim 1, wherein the clamping opening formed between the fixed clamping arm (2) and the movable clamping arm (3) is flared.
10. The wire diameter measuring device of claim 1, wherein the insulating rod (1) comprises a first rod body (101) and a second rod body (102), the length of the second rod body (102) is larger than that of the first rod body (101), the clamping mechanism is connected to the first rod body (101), and the first rod body (101) is detachably connected to the second rod body (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988021.4A CN112414264A (en) | 2020-09-18 | 2020-09-18 | Wire diameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988021.4A CN112414264A (en) | 2020-09-18 | 2020-09-18 | Wire diameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112414264A true CN112414264A (en) | 2021-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010988021.4A Pending CN112414264A (en) | 2020-09-18 | 2020-09-18 | Wire diameter measuring device |
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| CN (1) | CN112414264A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065220A (en) * | 1997-05-07 | 2000-05-23 | Mitutoyo Corporation | Measuring instrument, probe for the same, and measuring method |
| CN203672275U (en) * | 2013-12-02 | 2014-06-25 | 国家电网公司 | On-line measuring instrument of wire diameter |
| CN205027274U (en) * | 2015-10-22 | 2016-02-10 | 国网湖北省电力公司武汉供电公司 | Live conductor line footpath measuring device |
| CN106813555A (en) * | 2017-03-28 | 2017-06-09 | 广东电网有限责任公司佛山供电局 | Can livewire work wire caliper |
| CN206740045U (en) * | 2017-05-16 | 2017-12-12 | 国网新疆电力公司博尔塔拉供电公司 | Wire diameter measures specific purpose tool |
| CN208059756U (en) * | 2018-03-15 | 2018-11-06 | 国网新疆电力有限公司昌吉供电公司 | A kind of device of live line measurement power transmission line line footpath |
-
2020
- 2020-09-18 CN CN202010988021.4A patent/CN112414264A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065220A (en) * | 1997-05-07 | 2000-05-23 | Mitutoyo Corporation | Measuring instrument, probe for the same, and measuring method |
| CN203672275U (en) * | 2013-12-02 | 2014-06-25 | 国家电网公司 | On-line measuring instrument of wire diameter |
| CN205027274U (en) * | 2015-10-22 | 2016-02-10 | 国网湖北省电力公司武汉供电公司 | Live conductor line footpath measuring device |
| CN106813555A (en) * | 2017-03-28 | 2017-06-09 | 广东电网有限责任公司佛山供电局 | Can livewire work wire caliper |
| CN206740045U (en) * | 2017-05-16 | 2017-12-12 | 国网新疆电力公司博尔塔拉供电公司 | Wire diameter measures specific purpose tool |
| CN208059756U (en) * | 2018-03-15 | 2018-11-06 | 国网新疆电力有限公司昌吉供电公司 | A kind of device of live line measurement power transmission line line footpath |
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Application publication date: 20210226 |