CN113884711A - Test jointing clamp and test device - Google Patents
Test jointing clamp and test device Download PDFInfo
- Publication number
- CN113884711A CN113884711A CN202111113582.0A CN202111113582A CN113884711A CN 113884711 A CN113884711 A CN 113884711A CN 202111113582 A CN202111113582 A CN 202111113582A CN 113884711 A CN113884711 A CN 113884711A
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- Prior art keywords
- clamp
- clip
- test
- ground
- handle portion
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 238000007790 scraping Methods 0.000 claims abstract description 40
- 239000003973 paint Substances 0.000 claims abstract description 22
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004020 conductor Substances 0.000 claims description 59
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Abstract
The invention relates to the technical field of grounding grid testing devices, and discloses a testing wiring clamp and a testing device. The test jointing clamp comprises a first clamping body, a first clamping part and a second clamping part, wherein the first clamping body is provided with a first clamping part; the second clamp body is movably connected with the first clamp body, and a second clamping part opposite to the first clamping part is formed on the second clamp body; the scraper, first press from both sides with all be provided with in the second clamp and the portion the scraper, the scraper is configured to be in first clamp and portion with the second clamp and portion clip the ground connection downlead and for when the ground connection downlead rotated, worn off paint or rust on the ground connection downlead. The beneficial effects are as follows: through setting up the scraping piece to the messenger is at the scraping in-process, because the ground connection downlead can press from both sides and portion and second through first clamp and provide stable strong point to the scraping piece, makes the dynamics of scraping and grinds control easily, labour saving and time saving, and can not scrape the structure of damaging ground connection downlead inside.
Description
Technical Field
The invention relates to the technical field of grounding grid testing devices, in particular to a testing jointing clamp and a testing device.
Background
The reliable and effective connection between the grounding down lead of the power equipment and the grounding grid is the fundamental guarantee of the safe operation of the equipment. The ground downlead is the connecting part of power equipment and ground net, and in the long-time operation process of power equipment, the phenomenon such as node corrosion appears, splits even because of factors influence such as the tide, leads to ground downlead and main ground net tie point resistance increase to can not satisfy the requirement of electric power rule, make equipment have the potential safety hazard in service, can cause equipment to lose the ground operation in serious cases. The underground earthing pole and its connection part of the earthing device may also be corroded and even broken. Therefore, it is necessary to periodically perform electrical integrity tests on the grounding device.
Currently, test devices include test instruments and wire clamps. The testing line on the testing instrument is directly clamped on the grounding down lead through the wire clamp to form a measuring loop; and different currents are introduced to the grounding down-lead through the test wire and the voltage is measured, so that the resistance value of the measuring loop is calculated, and the calculated resistance value is compared with a preset resistance value, so that the conduction state between the grounding down-lead and the grounding grid is judged.
However, since the surface of the ground down conductor is coated with paint and rusts during a long-term use, an insulating layer is formed on the surface of the ground down conductor by the paint and the rust, and it is difficult to stably transmit current to the ground down conductor and measure the end point voltage of the ground down conductor, which may affect the test effect of the conduction state between the ground down conductor and the ground grid.
In order to solve the problems, at present, paint or rust on the surface of the grounding down conductor is removed by a file, and then a test clamp is arranged at the position of the grounding down conductor after being treated by the file by using a clamp; however, the grounding downlead does not provide a stable supporting point for the file in the use process of the file, so that the strength of the file is not easy to control, the filing process is time-consuming and labor-consuming, and the internal structure of the grounding downlead is easily damaged in the filing process.
Therefore, a testing clip and a testing device are needed to solve the above problems.
Disclosure of Invention
An object of the present invention is to provide a test clip capable of removing paint or rust on the surface of a ground down conductor in a time-saving and labor-saving manner without damaging the ground down conductor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a test clip for clipping onto a ground down conductor, comprising:
a first jaw body having a first jaw portion formed thereon;
the second clamp body is movably connected with the first clamp body, and a second clamping part opposite to the first clamping part is formed on the second clamp body;
the scraper, first press from both sides with all be provided with in the second clamp and the portion the scraper, the scraper is configured to be in first clamp and portion with the second clamp and portion clip the ground connection downlead and for when the ground connection downlead rotated, worn off paint or rust on the ground connection downlead.
Further, a cutting edge is formed on the first side edge of the scraping and grinding piece, and the cutting edge is configured on the first clamp and the second clamp the grounding down conductor and when the grounding down conductor slides, paint or rust on the grounding down conductor is cut off.
Further, an edge of the cutting edge is located inward with respect to an edge of the second side of the first clip and portion/the second clip and portion.
Furthermore, the material of the scraping and grinding piece is stainless steel.
Further, the abrading article is detachably provided to the first and second clip and portions.
Further, the first clamp body is not provided with one end of the first clamp portion and is formed with a first handle portion, the second clamp body is not provided with one end of the second clamp portion and is formed with a second handle portion, the first handle portion and the second handle portion are arranged oppositely, the first handle portion and the second handle portion are configured to be close to or away from each other, and therefore the first clamp portion and the second clamp portion are driven to be far away from or close to each other.
Further, the test clip further comprises:
a current post provided on the first handle portion for current to flow in or out;
a voltage post disposed on the second handle portion for measuring an endpoint voltage.
Furthermore, the first forceps holder body is movably connected with the second forceps holder body through a pin shaft, and the pin shaft is positioned in the middle of the first/second clamping portion and the first/second handle portion.
Further, the test clip further comprises:
the elastic piece is installed on the pin shaft, two ends of the elastic piece are respectively clamped on the inner sides of the first handle part and the second handle part, and the elastic piece is used for elastically controlling the first handle part and the second handle part to be close to or away from each other.
Another objective of the present invention is to provide a testing apparatus, which uses a testing clamp to perform testing, and can ensure the testing effect on the conduction state of the ground down lead.
In order to achieve the purpose, the invention adopts the following technical scheme:
a testing device comprises a tester and a plurality of testing jointing clamps, wherein one testing jointing clamp is clamped on one grounding downlead, and the grounding downlead is connected to a grounding grid;
the tester is respectively communicated with the two testing wiring clamps, and the tester, the two testing wiring clamps, the two grounding downlead and the grounding grid form a measuring loop.
The invention has the beneficial effects that:
the invention provides a testing jointing clamp, which is characterized in that a first clamp and a part are formed on a first clamp body, a second clamp and a part which are arranged opposite to the first clamp and the part are formed on a second clamp body movably connected with the first clamp body, and scraping and grinding pieces are arranged on the first clamp and the part and the second clamp and the part respectively, so that when the first clamp and the part and the second clamp and the part clamp a grounding down conductor and rotate relative to the grounding down conductor, the scraping and grinding pieces can scrape and grind off paint or iron rust on the grounding down conductor; at the scraping and grinding in-process of scraping and grinding the piece, because ground connection downlead can press from both sides and portion and provide stable strong point to scraping and grinding the piece through first clamp and portion and second, make the dynamics of scraping and grinding control easily, labour saving and time saving, and can not scrape the structure of losing ground connection downlead inside.
Drawings
FIG. 1 is a schematic structural view of a test terminal provided by the present invention;
fig. 2 is a schematic structural diagram of a testing apparatus provided in the present invention.
Reference numerals:
10-testing the jointing clamp; 1-a first jaw body; 11-a first clip and portion; 12-a first handle portion; 2-a second jaw body; 21-a second clip and portion; 22-a second handle portion; 3-scraping and grinding the parts; 4-support of the ear; 5-a current terminal; 6-voltage terminal; 7-a fastener;
20-a ground down conductor; 30-a ground grid; 40-a tester; 41-test line.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the structures or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
At present, in order to stably transmit current to a ground down conductor and measure the end point voltage of the ground down conductor to ensure the test effect of the conduction state between the ground down conductor and a ground grid, paint or rust on the surface of the ground down conductor needs to be removed by a file, and then a test clamp is arranged at a position on the ground down conductor after being processed by the file by using a clamp; however, the grounding downlead does not provide a stable supporting point for the file in the use process of the file, so that the strength of the file is not easy to control, the filing process is time-consuming and labor-consuming, and the internal structure of the grounding downlead is easily damaged in the filing process.
Example one
In this respect, a test terminal is proposed in the present embodiment. As shown in fig. 1 and 2, the test clip 10 is adapted to be clipped to a ground down conductor 20; specifically, the testing jointing clamp 10 comprises a first clamping body 1, a second clamping body 2 and a scraping and grinding piece 3; the second clamping body 2 is movably connected with the first clamping body 1 to form a clamping type clamping body which can be used for clamping the grounding down conductor 20; a first clamping portion 11 is formed on the first clamping body 1, and a second clamping portion 21 arranged opposite to the first clamping portion 11 is formed on the second clamping body 2; a scraping member 3 is provided on each of the first and second clip and portions 11 and 21, and the scraping member 3 is configured to scrape off paint or rust on the down conductor 20 when the first and second clip and portions 11 and 21 clip the down conductor 20 and rotate relative to the down conductor 20.
Compared with the prior art, the testing jointing clamp 10 in the embodiment is provided with the scraping and grinding pieces 3 on the second clamping body 2 and the first clamping body 1, so that when the first clamping part 11 and the second clamping part 21 clamp the ground down conductor 20 and rotate relative to the ground down conductor 20, the surfaces of the scraping and grinding pieces 3 and the ground down conductor 20 rub against each other, and therefore paint or rust on the ground down conductor 20 can be scraped and ground; adopt this mode of setting, can be at the scraping process of scraping and grinding piece 3, ground connection downlead 20 presss from both sides and portion 21 provides stable strong point to scraping and grinding piece 3 through first clamp and portion 11 and second, makes the dynamics of scraping and grinding control easily, labour saving and time saving, and can not scrape the structure of damaging ground connection downlead 20 inside.
Specifically, the shape of the first clip and portion 11 and the shape of the second clip and portion 21 are both curved arcs, so that the first clip and portion 11 and the second clip and portion 21 form a circular structure with each other, so as to facilitate the clamping of the test clip 10 on the ground down conductor 20; and the shape and size of the scraping and grinding member 3 are matched with the shape and size of the first clamping and portion 11/the second clamping and portion 21, so that when the first clamping and portion 11 and the second clamping and portion 21 clamp the ground down conductor 20 and rotate relative to the ground down conductor 20, the contact area between the scraping and grinding member 3 and the ground down conductor 20 is large, the mutual friction range is large, and the scraping and grinding effect is good.
Wherein, the scraping and grinding part 3 is detachably arranged on the first clamping and part 11 and the second clamping and part 21, and after the scraping and grinding part 3 is worn, the scraping and grinding part can be quickly detached and replaced by a new scraping and grinding part 3, so that the scraping and grinding part 3 can be detached and replaced conveniently. As shown in fig. 1, in the present embodiment, the abrading article 3 is detachably provided on the first and second clip and portions 11 and 21 by the fastening member 7. The fastener 7 comprises a set screw. In other embodiments, the scraper 3 may also be snapped to the first and second clips and portions 11, 21 by interference fit. Illustratively, a projection is provided on one of the scraper 3, the first clip and portion 11 and the second clip and portion 21, and a locking groove is provided on the other, and the projection is locked into the locking groove by interference, and it should be noted that the stability of the fixing manner by the fastener 7 is higher than that of interference locking.
Specifically, the material of the scraper 3 is high-strength stainless steel. The high-strength stainless steel has the characteristics of excellent wear resistance and high strength, and can scrape the abrasion of the scraping and grinding piece 3 and scrape off paint or rust on the grounding down lead 20 in the scraping and grinding process.
Further, a cutting edge is formed on the first side of the scraper 3, and the cutting edge is configured to cut off paint or rust not worn off on the ground down-lead 20 when the first clip portion 11 and the second clip portion 21 clip the ground down-lead 20 and the ground down-lead 20 slides, so that the paint or rust on the ground down-lead 20 can be removed to the maximum extent. The first side is a side of the scraping and grinding element 3 perpendicular to the sliding direction of the scraping and grinding element 3 on the ground down-lead 20.
Specifically, the two first sides of the scraping and grinding member 3 are both formed with cutting edges, and when the first clamping portion 11 and the second clamping portion 21 clamp the ground down conductor 20 and slide back and forth on the ground down conductor 20, the cutting edges on the two first sides of the scraping and grinding member 3 can both scrape off the paint or rust which is not worn off on the ground down conductor 20, so that the paint or rust on the ground down conductor 20 can be completely removed.
The edge of the cutting edge is close to the inner side relative to the edge of the second side edge of the first clip and part 11/the second clip and part 21, so that the risk that the edge of the cutting edge is easily scratched due to the fact that the edge of the cutting edge is exposed to the outer side relative to the edge of the second side edge of the first clip and part 11/the second clip and part 21 is avoided, and the safety of the test wiring clip 10 is high. The position of the second side edge is matched with the position of the first side edge.
Further, as shown in fig. 1, a first handle portion 12 is formed at one end of the first clamping body 1 where the first clamping portion 11 is not disposed, a second handle portion 22 is formed at one end of the second clamping body 2 where the second clamping portion 21 is not disposed, the first handle portion 12 and the second handle portion 22 are disposed opposite to each other, and the first handle portion 12 and the second handle portion 22 are configured to be moved close to or away from each other, so as to drive the first clamping portion 11 and the second clamping portion 21 to be moved away from or close to each other, so as to loosen or clamp the ground down wire 20. The first handle portion 12 and the second handle portion 22 are covered with plastic, which can provide a buffer protection to improve the comfort when holding the first handle portion 12 and the second handle portion 22 and applying force.
Specifically, the first forceps body 1 and the second forceps body 2 are movably connected through a pin shaft, and the pin shaft is located in the middle of the first clamping portion 11/the second clamping portion 21 and the first handle portion 12/the second handle portion 22, as shown in fig. 1, support lugs 4 are respectively arranged in the middle of the first forceps body 1 and the second forceps body 2, and the pin shaft is movably connected to the two support lugs 4, so that the first forceps body 1 is movably connected with the second forceps body 2.
Further, the testing terminal 10 further includes an elastic member, the elastic member is mounted to the pin, two ends of the elastic member are respectively clamped inside the first handle portion 12 and the second handle portion 22, and the elastic member is used for elastically controlling the first handle portion 12 and the second handle portion 22 to approach or move away from each other. In this embodiment, the elastic member is a torsion spring.
As shown in fig. 1, the test binding clip 10 further comprises a current binding post 5 and a voltage binding post 6; the current terminal 5 is arranged on the first handle portion 12 for current to flow in or out; a voltage terminal 6 is provided on the second handle portion 22 for measuring the terminal voltage. In the present embodiment, the current terminal 5 and the voltage terminal 6 are both connected to the first handle portion 12 and the second handle portion 22 by screws, respectively.
Through being equipped with electric current terminal 5 and voltage terminal 6 on first handle portion 12 and second handle portion 22 respectively, when testing, directly with in the testing arrangement the tester 40 on the test wire 41 be connected to the test binding clip 10 on electric current terminal 5 or the voltage terminal 6 can, avoided in the prior art with the tester 40 on the test wire 41 through the fastener clamp establish on ground connection downlead 20, on the one hand can make the connection labour saving and time saving of test wire 41, on the other hand can make the connectivity between test wire 41 and the ground connection downlead 20 better, in order to guarantee the test effect.
Example two
In the present embodiment, a testing apparatus is proposed, as shown in fig. 2, the testing apparatus includes a tester 40 and a plurality of testing clips 10 according to the first embodiment, one testing clip 10 is clipped on one grounding down lead 20, and the grounding down lead 20 is connected to a grounding grid 30; the tester 40 is respectively communicated with two of the test jointing clamps 10, so that the grounding down conductor 20 clamped by one of the test jointing clamps 10 is a reference down conductor, and the other one is a tested down conductor; the tester 40, the two test jointing clamps 10, the two grounding down leads 20 and the grounding grid 30 form a measuring loop; a direct current not less than 5A is applied to the measurement loop and the end point voltage is measured, so as to calculate the resistance value of the measurement loop according to the applied current value and the measured end point voltage value, and compare the calculated resistance value with the preset resistance value, so as to determine the conduction state between the ground down-lead 20 and the ground net 30.
The specific test process of the test device in this embodiment is as follows:
firstly, holding the first handle part 12 and the second handle part 22 and applying force to make them close to each other so as to drive the first clamping part 11 and the second clamping part 21 to be away from each other and clamp them on the grounding down-lead 20; and the test terminal 10 is rotated so that the first clip and portion 11 and the second clip and portion 21 clip the ground down conductor 20 and rotate relative to the ground down conductor 20, thereby causing friction between the scraping and grinding member 3 and the ground down conductor 20 to scrape off paint or rust on the ground down conductor 20.
Then, observing whether paint or rust at the position where the test jointing clamp 10 is clamped on the grounding down conductor 20 is scraped off completely; if the ground down conductor 20 is not scraped completely, the first clip portion 11 and the second clip portion 21 clip the ground down conductor 20 and slide back and forth on the ground down conductor 20, so that the paint or rust not scraped off on the ground down conductor 20 is scraped off by the cutting edge of the scraping member 3, and the paint or rust on the ground down conductor 20 can be removed completely.
Finally, clamping the test jointing clamp 10 at the position of the grounding down lead 20 which is scraped cleanly; the grounding down conductor 20 clamped by one of the test jointing clamps 10 is a reference down conductor, and the other one is a tested down conductor, namely, the tester 40, the two test jointing clamps 10, the two grounding down conductors 20 and the grounding grid 30 form a measuring loop;
then, a direct current not less than 5A is applied to the measurement loop and the endpoint voltage is measured to calculate the resistance of the measurement loop, and the calculated resistance value is compared with a preset resistance value to determine the conduction state between the ground down-lead 20 and the ground grid 30, so that the actual conduction state between the ground down-lead 20 and the ground grid 30 can be tested and calculated.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A test clip for clipping onto a ground down conductor (20), comprising:
a first jaw body (1) having a first jaw portion (11) formed thereon;
the second clamping body (2) is movably connected with the first clamping body (1), and a second clamping part (21) which is opposite to the first clamping part (11) is formed on the second clamping body (2);
a scraper (3), the first clip and portion (11) and the second clip and portion (21) are both provided with the scraper (3), the scraper (3) is configured to grind off paint or rust on the ground down-lead (20) when the first clip and portion (11) and the second clip and portion (21) clip the ground down-lead (20) and rotate relative to the ground down-lead (20).
2. The test terminal according to claim 1, characterized in that the first side of the scraping element (3) is formed with a cutting edge arranged such that the first clip portion (11) and the second clip portion (21) clip the ground lead (20) and cut off paint or rust on the ground lead (20) when the ground lead (20) slides.
3. The test clip of claim 2, characterized in that the edge of the cutting edge is located inwardly with respect to the edge of the second side of the first clip and portion (11)/the second clip and portion (21).
4. The test clamp according to claim 1, characterized in that the material of the scraper (3) is stainless steel.
5. A test clamp according to claim 1, characterized in that the scraping element (3) is detachably arranged to the first (11) and the second (21) clamp.
6. The test connection clamp according to claim 1, characterized in that the end of the first clamp body (1) not provided with the first clamp portion (11) is formed with a first handle portion (12), the end of the second clamp body (2) not provided with the second clamp portion (21) is formed with a second handle portion (22), and the first handle portion (12) and the second handle portion (22) are arranged opposite to each other, the first handle portion (12) and the second handle portion (22) being configured to move towards or away from each other to drive the first clamp portion (11) and the second clamp portion (21) to move away from or towards each other.
7. The test clip defined in claim 6 wherein the test clip further comprises:
a current terminal (5) provided on the first handle portion (12) for current to flow in or out;
a voltage terminal (6) disposed on the second handle portion (22) for measuring an end point voltage.
8. The test clamp according to claim 6, characterized in that the first clamp body (1) is movably connected to the second clamp body (2) by a pin, and the pin is located in the middle of the first clamp portion (11)/the second clamp portion (21) and the first handle portion (12)/the second handle portion (22).
9. The test clip of claim 8, further comprising:
the elastic piece is mounted on the pin shaft, two ends of the elastic piece are respectively clamped on the inner sides of the first handle part (12) and the second handle part (22), and the elastic piece is used for elastically controlling the first handle part (12) and the second handle part (22) to be close to or far away from each other.
10. A test apparatus, comprising a tester (40) and a plurality of test clips according to any one of claims 1 to 9, one of said test clips being mounted on one of said ground down conductors (20), said ground down conductor (20) being connected to a ground grid (30);
the tester (40) is respectively communicated with the two testing wiring clamps, and the tester (40), the two testing wiring clamps, the two grounding down-lead (20) and the grounding grid (30) form a measuring loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113582.0A CN113884711A (en) | 2021-09-23 | 2021-09-23 | Test jointing clamp and test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111113582.0A CN113884711A (en) | 2021-09-23 | 2021-09-23 | Test jointing clamp and test device |
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| Publication Number | Publication Date |
|---|---|
| CN113884711A true CN113884711A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111113582.0A Pending CN113884711A (en) | 2021-09-23 | 2021-09-23 | Test jointing clamp and test device |
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