CN113985103A - Current clamp for use in tested current-carrying conductor pair - Google Patents
Current clamp for use in tested current-carrying conductor pair Download PDFInfo
- Publication number
- CN113985103A CN113985103A CN202111239613.7A CN202111239613A CN113985103A CN 113985103 A CN113985103 A CN 113985103A CN 202111239613 A CN202111239613 A CN 202111239613A CN 113985103 A CN113985103 A CN 113985103A
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- Prior art keywords
- clamp
- clamp arm
- current
- testing
- arm
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- 239000004020 conductor Substances 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 76
- 210000000080 chela (arthropods) Anatomy 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- 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
-
- 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
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a current clamp for use in a tested current-carrying conductor pair, which comprises: the device comprises a shell, a test clamp body, a pull buckle and a centering clamp assembly, wherein the pull buckle is linked with the test clamp body; centering pincers subassembly includes: the left clamp arm and the right clamp arm are connected with a braking part, and the braking part is connected with the shell in a sliding manner; one end of the trigger is connected with the braking part, so that the braking part can be driven to move and is linked with the left clamp arm and the right clamp arm to open, and an elastic part used for closing and resetting the left clamp arm and the right clamp arm is arranged between the braking part and the shell. The current clamp for the tested current-carrying conducting wire pair can realize the centering of the tested current-carrying conducting wire; the structure is simple, and the maintenance is convenient.
Description
Technical Field
The invention relates to the technical field of measuring equipment, in particular to a current clamp for a measured current-carrying conductor pair.
Background
In the prior art, a current clamp is used as a portable instrument which can measure current without disconnecting a circuit, and is widely applied due to the fact that the current clamp is convenient to use.
When the traditional current clamp is used, in order to reduce errors, a current-carrying conductor to be measured is required to be positioned at the center of a jaw of a clamp body to be tested as much as possible, but the traditional current clamp lacks an effective centering means and is difficult to realize centering of the current-carrying conductor to be measured only by the hand feeling of an operator.
Disclosure of Invention
The invention aims to solve the technical problem of providing a current clamp for use in a tested current-carrying conductor pair, which can realize the centering of the tested current-carrying conductor; the structure is simple, and the maintenance is convenient.
In order to solve the above technical problem, the present invention provides a current clamp for use in a current-carrying conductor pair to be measured, comprising: the device comprises a shell, a testing clamp body, a pull buckle and a centering clamp assembly, wherein the testing clamp body, the pull buckle and the centering clamp assembly are arranged on the shell;
centering pincers subassembly includes: the left clamp arm and the right clamp arm are connected with a braking part, and the braking part is connected with the shell in a sliding manner;
one end of the trigger is connected with the braking part, so that the braking part can be driven to move and is linked with the left clamp arm and the right clamp arm to open, and an elastic part for closing and resetting the left clamp arm and the right clamp arm is arranged between the braking part and the shell; wherein:
pressing the pull buckle to link the test clamp body to open, and synchronously linking the pull buckle with the brake part to enable the brake part to approach the test clamp body to move so as to open the left clamp arm and the right clamp arm; the tested current-carrying lead passes through the opening of the testing clamp body and enters the positioning groove between the left clamp arm and the right clamp arm; and when the pull buckle is loosened, the testing clamp body is closed, the elastic piece presses the braking piece to move away from the testing clamp body, the left clamp arm and the right clamp arm are folded, and the to-be-tested current-carrying conductor is clamped at the central position of the jaw of the testing clamp body.
Wherein, the left tong arm and the right tong arm are respectively provided with a guide block, and the shell is provided with a guide groove matched with the guide block; the trigger is linked with the braking piece to enable the braking piece to be close to the testing clamp body, the guide blocks of the left clamp arm and the right clamp arm move in a limiting mode along the guide grooves, and the left clamp arm and the right clamp arm can be folded or unfolded in parallel.
The left clamp arm is hinged with a left connecting rod, the right clamp arm is hinged with a right connecting rod, and the left connecting rod and the right connecting rod are hinged with the braking part; the brake part moves close to the test clamp body and drives the left clamp arm and the right clamp arm to open through the left connecting rod and the right connecting rod; the brake part moves away from the test clamp body, and the brake part drives the left clamp arm and the right clamp arm to fold through the left connecting rod and the right connecting rod.
The braking part comprises an end head and a central rod, the end head is hinged with the left connecting rod and the right connecting rod respectively, the central rod is connected with the end head in a fastening mode, a guide hole which is matched with the central rod and can be in sliding connection with the central rod is formed in the shell, and the central rod can move close to or far away from the test clamp body along the guide hole.
The trigger is provided with an arc-shaped surface for the braking part to slide, the trigger moves towards the inside of the shell, and the arc-shaped surface is linked with the braking part to move towards the direction of the testing clamp body.
One end of the elastic piece is tightly propped against the shell, and the other end of the elastic piece is tightly propped against the braking piece.
Wherein, the structure of the centering tong assembly is designed to be symmetrical.
Wherein, the elastic component is a spring.
The current clamp for the tested current-carrying conductor pair has the following beneficial effects: current clamp for use in a current carrying conductor pair under test, comprising: the device comprises a shell, a testing clamp body, a pull buckle and a centering clamp assembly, wherein the testing clamp body, the pull buckle and the centering clamp assembly are arranged on the shell; centering pincers subassembly includes: the left clamp arm and the right clamp arm are connected with a braking part, and the braking part is connected with the shell in a sliding manner; one end of the trigger is connected with the braking part, so that the braking part can be driven to move and is linked with the left clamp arm and the right clamp arm to open, and an elastic part for closing and resetting the left clamp arm and the right clamp arm is arranged between the braking part and the shell; wherein: pressing the pull buckle to link the test clamp body to open, and synchronously linking the pull buckle with the brake part to enable the brake part to approach the test clamp body to move so as to open the left clamp arm and the right clamp arm; the tested current-carrying lead passes through the opening of the testing clamp body and enters the positioning groove between the left clamp arm and the right clamp arm; the pulling buckle is loosened, the testing clamp body is closed, the elastic piece presses the braking piece to move away from the testing clamp body, the left clamp arm and the right clamp arm are folded, the tested current-carrying conductor is clamped at the central position of the jaw of the testing clamp body, and the centering of the tested current-carrying conductor can be realized; the structure is simple, and the maintenance is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a current clamp for use in a current-carrying conductor pair under test according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a first embodiment of a current clamp for use in a current-carrying conductor pair under test according to the present invention.
The current clamp for use in the current-carrying conductor pair to be measured in the embodiment includes: the device comprises a shell 1, a testing clamp body 11, a pull buckle 12 and a centering clamp assembly 2, wherein the testing clamp body 11, the pull buckle 12 and the testing clamp body 11 are arranged on the shell 1 in a linkage manner, and the centering clamp assembly 2 is positioned at a clamp opening at the inner side of the testing clamp body;
centering jaw assembly 2 comprises: the left clamp arm 21 and the right clamp arm 22 can move synchronously, a positioning groove 2a aligned with the center of a clamp opening of the test clamp body is formed between the left clamp arm 21 and the right clamp arm 22 in a matching mode, the left clamp arm 21 and the right clamp arm 22 are connected with the shell 1 in a sliding mode, the left clamp arm 21 and the right clamp arm 22 can be folded or unfolded in parallel, the left clamp arm 21 and the right clamp arm 22 are connected with a braking piece 23, and the braking piece 23 is connected with the shell 1 in a sliding mode;
one end of the trigger 12 is connected with the braking part 23, so that the braking part 23 can be driven to move and the left clamp arm 21 and the right clamp arm 22 are linked to open, and an elastic part 24 for folding and resetting the left clamp arm 21 and the right clamp arm 22 is arranged between the braking part 23 and the shell 1; wherein:
pressing the trigger 12 to link the testing clamp body 11 to open, and synchronously linking the trigger 12 with the braking part 23 to enable the braking part to approach the testing clamp body 11 to move, so that the left clamp arm 21 and the right clamp arm 22 are opened; the tested current-carrying lead passes through the gap opened by the testing clamp body 11 and enters the positioning groove 2a between the left clamp arm 21 and the right clamp arm 22; when the trigger 12 is released, the testing clamp body 11 is closed, the elastic piece 24 presses the braking piece 23 to move away from the testing clamp body 11, the left clamp arm 21 and the right clamp arm 22 are folded, and the to-be-tested current-carrying conductor is clamped at the center of the jaw of the testing clamp body 11.
In specific implementation, the left tong arm 21 and the right tong arm 22 are respectively provided with a guide block 2b, and the shell 1 is provided with a guide groove 1a matched with the guide block 2 b; the trigger 12 is linked with the braking part 23 to enable the braking part to be close to the testing clamp body 11, the guide blocks 2b of the left clamp arm 21 and the right clamp arm 22 carry out limiting movement along the guide groove 1a, and the left clamp arm 21 and the right clamp arm 22 can be folded or unfolded in parallel.
Furthermore, the structure of the centering clamp assembly 2 is symmetrical, the left clamp arm 21 is hinged with a left connecting rod 25, the right clamp arm 22 is hinged with a right connecting rod 26, and the left connecting rod 25 and the right connecting rod 26 are hinged with the braking part 23.
Further, the braking member 23 includes a head 231 and a central rod 232, the head 231 is hinged to the left connecting rod 25 and the right connecting rod 26 respectively, the central rod 232 is tightly connected to the head 231, a guiding hole 1b adapted to the central rod 232 for sliding connection is formed in the housing 1, and the central rod 232 can move along the guiding hole 1b to move toward or away from the testing clamp 11.
In implementation, the brake part 23 moves close to the test clamp body 11, and the brake part 23 drives the left clamp arm 21 and the right clamp arm 22 to open through the left connecting rod 25 and the right connecting rod 26; the brake part 23 moves away from the testing clamp body 11, and the brake part 23 drives the left clamp arm 21 and the right clamp arm 22 to fold through the left connecting rod 25 and the right connecting rod 26.
Preferably, the trigger 12 is provided with an arc surface 121 for the braking member 23 to slide, the trigger 12 moves towards the inside of the housing 1, and the arc surface 121 is linked with the braking member 23 to move towards the direction of the testing clamp body 11.
Further, the elastic member 24 is a spring, one end of the elastic member 24 abuts against the housing, and the other end of the elastic member 24 abuts against the braking member 23. The function of the elastic member 24 is: the retaining member 23 is caused to maintain a tendency to move away from the test jaw body 11 in the longitudinal direction of the housing 1.
When the current clamp for the current-carrying wire pair to be measured is implemented specifically, the trigger 12 is pressed to be linked with the testing clamp body 11 to be opened, the trigger 12 is synchronously linked with the braking piece 23 to enable the braking piece to approach the testing clamp body 11 to move, and the left clamp arm 21 and the right clamp arm 22 are opened; the tested current-carrying lead passes through the gap opened by the testing clamp body 11 and enters the positioning groove 2a between the left clamp arm 21 and the right clamp arm 22; when the trigger 12 is released, the testing clamp body 11 is closed, the elastic piece 24 presses the braking piece 23 to move away from the testing clamp body 11, the left clamp arm 21 and the right clamp arm 22 are folded, and the to-be-tested current-carrying conductor is clamped at the center of the jaw of the testing clamp body 11.
The current clamp for the tested current-carrying conductor pair has the following beneficial effects: current clamp for use in a current carrying conductor pair under test, comprising: the device comprises a shell, a testing clamp body, a pull buckle and a centering clamp assembly, wherein the testing clamp body, the pull buckle and the centering clamp assembly are arranged on the shell; centering pincers subassembly includes: the left clamp arm and the right clamp arm are connected with a braking part, and the braking part is connected with the shell in a sliding manner; one end of the trigger is connected with the braking part, so that the braking part can be driven to move and is linked with the left clamp arm and the right clamp arm to open, and an elastic part for closing and resetting the left clamp arm and the right clamp arm is arranged between the braking part and the shell; wherein: pressing the pull buckle to link the test clamp body to open, and synchronously linking the pull buckle with the brake part to enable the brake part to approach the test clamp body to move so as to open the left clamp arm and the right clamp arm; the tested current-carrying lead passes through the opening of the testing clamp body and enters the positioning groove between the left clamp arm and the right clamp arm; the pulling buckle is loosened, the testing clamp body is closed, the elastic piece presses the braking piece to move away from the testing clamp body, the left clamp arm and the right clamp arm are folded, the tested current-carrying conductor is clamped at the central position of the jaw of the testing clamp body, and the centering of the tested current-carrying conductor can be realized; the structure is simple, and the maintenance is convenient.
Claims (8)
1. A current clamp for use in a pair of current carrying conductors under test, comprising: the device comprises a shell, a testing clamp body, a pulling buckle and a centering clamp assembly, wherein the testing clamp body, the pulling buckle and the testing clamp body are arranged on the shell, the pulling buckle is linked with the testing clamp body, and the centering clamp assembly is positioned at a clamp opening on the inner side of the testing clamp body;
the centering jaw assembly comprises: the left clamp arm and the right clamp arm are connected with a braking piece, and the braking piece is connected with the shell in a sliding manner;
one end of the trigger is connected with the braking part, so that the braking part can be driven to move and the left clamp arm and the right clamp arm are linked to be opened, and an elastic part for closing and resetting the left clamp arm and the right clamp arm is arranged between the braking part and the shell; wherein:
pressing the trigger to link the testing clamp body to open, and synchronously linking the trigger with the braking piece to enable the braking piece to move close to the testing clamp body so as to open the left clamp arm and the right clamp arm; a tested current-carrying lead passes through the opened notch of the testing clamp body and enters the positioning groove between the left clamp arm and the right clamp arm; and when the pull buckle is loosened, the testing clamp body is closed, the elastic piece presses the braking piece to move away from the testing clamp body, and the left clamp arm and the right clamp arm are folded to clamp the to-be-tested current-carrying conductor at the central position of the jaw of the testing clamp body.
2. The current clamp for use in a current-carrying conductor pair to be tested according to claim 1, wherein the left clamp arm and the right clamp arm are respectively provided with a guide block, and the housing is provided with a guide groove matched with the guide block;
the trigger is linked with the braking piece to enable the braking piece to be close to the testing clamp body, the guide blocks of the left clamp arm and the right clamp arm move in a limiting mode along the guide grooves, and the left clamp arm and the right clamp arm can be folded or unfolded in parallel.
3. The current clamp for use in a current-carrying conductor pair to be tested according to claim 2, wherein said left clamp arm is hinged to a left link, said right clamp arm is hinged to a right link, and said left link and said right link are hinged to said brake member;
the brake part moves close to the test clamp body, and the brake part drives the left clamp arm and the right clamp arm to open through the left connecting rod and the right connecting rod; the brake part moves away from the test clamp body, and the brake part drives the left clamp arm and the right clamp arm to fold through the left connecting rod and the right connecting rod.
4. The current clamp of claim 3, wherein said detent member comprises a head and a central rod, said head is pivotally connected to said left and right links, said central rod is fixedly connected to said head, said housing defines a guide hole adapted to slidably connect with said central rod, and said central rod is movable along said guide hole toward and away from said clamp body.
5. The current clamp for testing current-carrying conductor pair use of claim 1, wherein said trigger has an arc surface for sliding said brake member, said trigger moves towards the inside of said housing, and said arc surface is linked with said brake member to move towards the direction of said testing clamp body.
6. The current clamp for use in a current-carrying conductor pair to be measured according to claim 1, wherein one end of said elastic member abuts against said housing, and the other end of said elastic member abuts against said braking member.
7. A current clamp for use in a current carrying conductor pair under test as claimed in claim 1 wherein said centering clamp assembly is configured to be symmetrical.
8. The current clamp of claim 1, wherein said resilient member is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111239613.7A CN113985103B (en) | 2021-10-25 | 2021-10-25 | Current clamp for measured current carrying wire alignment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111239613.7A CN113985103B (en) | 2021-10-25 | 2021-10-25 | Current clamp for measured current carrying wire alignment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113985103A true CN113985103A (en) | 2022-01-28 |
| CN113985103B CN113985103B (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111239613.7A Active CN113985103B (en) | 2021-10-25 | 2021-10-25 | Current clamp for measured current carrying wire alignment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113985103B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202383202U (en) * | 2011-12-23 | 2012-08-15 | 重庆市电力公司綦南供电局 | Jaw-adjustable direct-current resistance test plier |
| CN205960495U (en) * | 2016-08-31 | 2017-02-15 | 国网河南西峡县供电公司 | Insulated clamp for high -tension fuse |
| CN208125819U (en) * | 2018-03-20 | 2018-11-20 | 国网天津市电力公司电力科学研究院 | Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers |
| CN209417161U (en) * | 2018-12-19 | 2019-09-20 | 国网浙江省电力有限公司岱山县供电公司 | Portable 10kV distribution transforming gear charges capacity checking device |
| CN209640404U (en) * | 2019-03-07 | 2019-11-15 | 广东电网有限责任公司 | A kind of hand-held electric current split-core type meter of protection against electric shock |
| CN110632450A (en) * | 2019-08-16 | 2019-12-31 | 国网浙江省电力有限公司湖州供电公司 | Intelligent low-voltage distribution network patrol instrument device |
| CN111487442A (en) * | 2020-04-27 | 2020-08-04 | 浙江稳山电气科技有限公司 | Harmonic detection device for three-phase asymmetric system |
| CN211785675U (en) * | 2020-02-19 | 2020-10-27 | 上海今电实业有限公司 | Opening and closing mechanism of clamp-on ammeter probe |
-
2021
- 2021-10-25 CN CN202111239613.7A patent/CN113985103B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202383202U (en) * | 2011-12-23 | 2012-08-15 | 重庆市电力公司綦南供电局 | Jaw-adjustable direct-current resistance test plier |
| CN205960495U (en) * | 2016-08-31 | 2017-02-15 | 国网河南西峡县供电公司 | Insulated clamp for high -tension fuse |
| CN208125819U (en) * | 2018-03-20 | 2018-11-20 | 国网天津市电力公司电力科学研究院 | Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers |
| CN209417161U (en) * | 2018-12-19 | 2019-09-20 | 国网浙江省电力有限公司岱山县供电公司 | Portable 10kV distribution transforming gear charges capacity checking device |
| CN209640404U (en) * | 2019-03-07 | 2019-11-15 | 广东电网有限责任公司 | A kind of hand-held electric current split-core type meter of protection against electric shock |
| CN110632450A (en) * | 2019-08-16 | 2019-12-31 | 国网浙江省电力有限公司湖州供电公司 | Intelligent low-voltage distribution network patrol instrument device |
| CN211785675U (en) * | 2020-02-19 | 2020-10-27 | 上海今电实业有限公司 | Opening and closing mechanism of clamp-on ammeter probe |
| CN111487442A (en) * | 2020-04-27 | 2020-08-04 | 浙江稳山电气科技有限公司 | Harmonic detection device for three-phase asymmetric system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113985103B (en) | 2023-12-08 |
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