CN214703952U - Auxiliary calibration tool for pincerlike electrical measuring instrument - Google Patents
Auxiliary calibration tool for pincerlike electrical measuring instrument Download PDFInfo
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- CN214703952U CN214703952U CN202120574557.1U CN202120574557U CN214703952U CN 214703952 U CN214703952 U CN 214703952U CN 202120574557 U CN202120574557 U CN 202120574557U CN 214703952 U CN214703952 U CN 214703952U
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- support rod
- rod
- supporting rod
- clamp
- main upright
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- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000012795 verification Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Abstract
The utility model provides a calibration appurtenance of instrument is surveyed to pincerlike electricity, this calibration appurtenance includes: the base is provided with a main upright rod; the main upright stanchion is also provided with an upper supporting pole and a lower supporting pole which are used for clamping and straightening the test lead; a slide rail is arranged on one side of the main upright rod, which is connected with the upper support rod and the lower support rod, and the upper support rod and the lower support rod can slide in the slide rail along the axial direction of the main upright rod; one end of the upper support rod and one end of the lower support rod, which are connected with the main upright rod, are provided with sliding nuts used for fixing the positions of the upper support rod and the lower support rod; the working frame replaces a working table, and the working frame is flexible, small and convenient to move and carry, so that the working frame can be matched with various main standard devices such as various types of alternating current and direct current standard sources of standard resistors, resistance boxes and grounding resistance meter calibrating devices, and application scenes are greatly widened; the test wire is fixed in the vertical direction, so that the working personnel can conveniently place the clamp head of the instrument at a test position required by a specification standard, and the screen of the instrument can be conveniently read in the horizontal direction.
Description
Technical Field
The utility model relates to an instrument check-up appurtenance technical field especially relates to a calibration appurtenance of instrument is surveyed to pincerlike electricity.
Background
The clamp-on grounding resistance tester and the clamp-on ammeter are common electric measuring instruments, and workers of a metering technical mechanism respectively verify and calibrate the two instruments according to JJG1054-2009 'Clamp-on grounding resistance instrument verification rule' and JJF1075-2015 'clamp-on ammeter calibration standard'. In both JJG1054-2009 and JJF1075-2015, there are relevant requirements for the location of the wire passing through the jaws during verification or calibration. Wherein JJG1054-2009 requires: during the registration error calibration, the connecting lead is arranged at a position approximate to the geometric center of the jaw and is vertical to the clamp ring, the eccentric position influences the position of the connecting lead deviating from the geometric center of the clamp head in the experiment and is close to the inner wall of the clamp head in the front, back, left and right directions, and the registration change quantity is read; JJF1075-2015 requires: various calibration methods should place the wire under test in the approximate geometric center of the jaw or in a landmark. If the measured lead placement deviation is large, the measurement result is affected.
At present, in the verification and calibration work of a clamp-on grounding resistance tester and a clamp-on ammeter, a worker generally adjusts the position of a test lead by a method combining manual operation and visual inspection, and the requirement of the specification on the position of the test lead in the verification and calibration is difficult to meet. Taking a clamp-on ground resistance tester as an example, because the width and the height of a clamp ring part are large, the tester is heavy, and a test lead is easy to bend and wind after being connected with a standard resistor and is difficult to fix, the requirement of 'the geometric center position of a clamp head and the perpendicularity of the clamp ring' required by regulations is difficult to achieve, and the accuracy of data is further influenced. The existing auxiliary appliances have the problems of single working scene, only matched use with a fixed metering standard device and fixed horizontal direction of a lead, and inconvenient reading. Chinese utility model patent specification CN201621229326 discloses "pincerlike ground resistance appearance auxiliary workbench", and it comes the fixed test wire through the terminal that sets up on operation platform, can only be used for the examination of pincerlike ground resistance tester, and can't be used for the main standard ware of various differences in a flexible way. On the other hand, the wire is fixed in the horizontal direction, so that the data reading by workers is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that exists among the prior art, provided a calibration appurtenance of pincerlike electrical measuring instrument.
A calibration aid for a clamp-on electrical measuring instrument, comprising: the base is provided with a main upright rod; the main upright stanchion is vertical to the upper surface of the base; the main upright stanchion is also provided with an upper supporting pole and a lower supporting pole which are used for clamping and straightening the test lead, and the upper supporting pole and the lower supporting pole are both vertical to the main upright stanchion; the measuring wire is fixed in position in the vertical direction, so that the measured surface plane can be exactly positioned in the horizontal direction, and a worker can easily read the readings and record data.
Furthermore, in order that the upper support rod and the lower support rod can slide in the vertical direction, a sliding rail is arranged on one side of the main vertical rod, which is connected with the upper support rod and the lower support rod, and the upper support rod and the lower support rod can slide in the sliding rail along the axial direction of the main vertical rod.
Furthermore, in order that the upper support rod and the lower support rod can be fixed in position in the vertical direction, the ends, connected with the main upright rod, of the upper support rod and the lower support rod are provided with sliding nuts for fixing the positions of the upper support rod and the lower support rod.
Furthermore, in order to fix the test lead between the upper support rod and the lower support rod, the ends, far away from the connection with the main pull rod, of the upper support rod and the lower support rod are respectively provided with a wire clamp used for clamping the test lead.
Further, in order to adjust the base to be in a horizontal position, an adjusting piece is arranged on the lower surface of the base, and the height of the adjusting piece can be adjusted.
Further, in order to maintain the balance of the base, the number of the adjusting members is four, and the four adjusting members are respectively arranged at four corners of the lower surface of the base.
Further, in order to protect the lower surface of the base, a gasket is arranged between the lower surface of the base and the adjusting piece.
The technical effects of the utility model reside in that: a calibration aid for a clamp-on electrical measuring instrument, comprising: the base is provided with a main upright rod; the main upright stanchion is vertical to the upper surface of the base; the main upright stanchion is also provided with an upper supporting pole and a lower supporting pole which are used for clamping and straightening the test lead, and the upper supporting pole and the lower supporting pole are both vertical to the main upright stanchion; a slide rail is arranged on one side of the main upright rod, which is connected with the upper support rod and the lower support rod, and the upper support rod and the lower support rod can slide in the slide rail along the axial direction of the main upright rod; one end of the upper support rod and one end of the lower support rod, which are connected with the main upright rod, are provided with sliding nuts used for fixing the positions of the upper support rod and the lower support rod; the working frame replaces a working table, and the working frame is flexible, small and convenient to move and carry, so that the working frame can be matched with various main standard devices such as various types of alternating current and direct current standard sources of standard resistors, resistance boxes and grounding resistance meter calibrating devices, and application scenes are greatly widened; the test wire is fixed in the vertical direction, so that the working personnel can conveniently place the clamp head of the instrument at a test position required by a specification standard, and the screen of the instrument can be conveniently read in the horizontal direction.
Drawings
FIG. 1 is a front view of a calibration aid of the present invention;
in the figure: 1. the test device comprises a base, 1-1 parts of adjusting pieces, 1-2 parts of gaskets, 2 parts of main upright rods, 2-1 parts of sliding rails, 2-2 parts of sliding nuts, 3 parts of upper supporting rods, 3-1 parts of wire clamps, 4 parts of lower supporting rods, 5 parts of test leads and 6 parts of a tested meter.
Detailed Description
The following describes an embodiment of the present invention with reference to fig. 1.
A calibration aid for a clamp-on electrical measuring instrument comprising: the device comprises a base 1 and a main upright rod 2 arranged on the base 1; the main upright stanchion 2 is vertical to the upper surface of the base 1; the main upright stanchion 2 is also provided with an upper supporting rod 3 and a lower supporting rod 4 which are used for clamping and straightening a test lead 5, and the upper supporting rod 3 and the lower supporting rod 4 are both vertical to the main upright stanchion 2; one side of the main upright stanchion 2, which is connected with the upper support rod 3 and the lower support rod 4, is provided with a slide rail 2-1, and the upper support rod 3 and the lower support rod 4 can slide in the slide rail 2-1 along the axial direction of the main upright stanchion 2; one end of the upper support rod 3 and the lower support rod 4 connected with the main upright rod 2 is provided with a sliding nut 2-2 for fixing the positions of the upper support rod 3 and the lower support rod 4; one ends of the upper support rod 3 and the lower support rod 4, which are far away from the end connected with the main pull rod 2, are provided with wire clamps 3-1 for clamping test wires 5; the lower surface of the base 1 is provided with an adjusting piece 1-1, and the height of the adjusting piece 1-1 can be adjusted; the number of the adjusting pieces 1-1 is four, and the four adjusting pieces 1-1 are respectively arranged at four corners of the lower surface of the base 1; a gasket 1-2 is arranged between the lower surface of the base 1 and the adjusting piece 1-1.
The working principle is as follows: the height of an adjusting piece 1-1 on the lower surface of a base 1 is adjusted to enable the base 1 of the auxiliary calibrating tool to be kept horizontal, the positions of an upper supporting rod 3 and a lower supporting rod 4 on a main vertical rod 2 are adjusted through a sliding rail 2-1 and fixed through a sliding nut 2-2, a test lead 5 is clamped on the upper supporting rod 3 through a wire clamp 3-1, a tested meter 6 penetrates through the test lead 5, the other clamped end of the test lead 5 is clamped on the lower supporting rod 4 after being straightened, the tested meter 6 is enabled to be kept horizontal, and data are read and recorded.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essential desulfurization of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A calibration aid for a clamp-on electrical measuring instrument, comprising: the device comprises a base (1) and a main upright rod (2) arranged on the base (1);
the method is characterized in that: the main upright stanchion (2) is vertical to the upper surface of the base (1);
the device is characterized in that an upper supporting rod (3) and a lower supporting rod (4) which are used for clamping and straightening a test wire (5) are further arranged on the main vertical rod (2), and the upper supporting rod (3) and the lower supporting rod (4) are perpendicular to the main vertical rod (2).
2. The auxiliary calibrating tool for the clamp-shaped electrical measuring instrument is characterized in that a sliding rail (2-1) is arranged on one side of the main vertical rod (2) connected with the upper supporting rod (3) and the lower supporting rod (4), and the upper supporting rod (3) and the lower supporting rod (4) can slide in the sliding rail (2-1) along the axial direction of the main vertical rod (2).
3. The auxiliary calibrating tool for clamp-on electrical measuring instruments according to claim 2 is characterized in that the end of the upper supporting rod (3) and the lower supporting rod (4) connected with the main vertical rod (2) is provided with a sliding nut (2-2) for fixing the position of the upper supporting rod (3) and the lower supporting rod (4).
4. The auxiliary calibration tool for electrical clamp gauges as claimed in claim 1, characterized in that the ends of the upper (3) and lower (4) support bars remote from the connection to the main upright (2) are each provided with a clamp (3-1) for clamping a test wire (5).
5. The auxiliary tool for calibrating a pincer-shaped electrical measuring instrument is characterized in that an adjusting piece (1-1) is arranged on the lower surface of the base (1), and the height of the adjusting piece (1-1) can be adjusted.
6. The auxiliary tool for calibrating a clamp-shaped electrical measuring instrument according to claim 5, wherein the number of the adjusting members (1-1) is four, and four adjusting members (1-1) are respectively arranged at four corners of the lower surface of the base (1).
7. An auxiliary tool for calibrating a clamp-on electrical measuring instrument according to claim 5, characterized in that a spacer (1-2) is provided between the lower surface of the base (1) and the adjusting member (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120574557.1U CN214703952U (en) | 2021-03-22 | 2021-03-22 | Auxiliary calibration tool for pincerlike electrical measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120574557.1U CN214703952U (en) | 2021-03-22 | 2021-03-22 | Auxiliary calibration tool for pincerlike electrical measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214703952U true CN214703952U (en) | 2021-11-12 |
Family
ID=78572106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120574557.1U Expired - Fee Related CN214703952U (en) | 2021-03-22 | 2021-03-22 | Auxiliary calibration tool for pincerlike electrical measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214703952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325052A (en) * | 2021-12-29 | 2022-04-12 | 广州广电计量检测股份有限公司 | Clamp-on ammeter calibrating device |
-
2021
- 2021-03-22 CN CN202120574557.1U patent/CN214703952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325052A (en) * | 2021-12-29 | 2022-04-12 | 广州广电计量检测股份有限公司 | Clamp-on ammeter calibrating device |
| CN114325052B (en) * | 2021-12-29 | 2023-09-15 | 广电计量检测集团股份有限公司 | Clamp ammeter calibrating device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |