CN217467026U - Wire and cable conductor resistance measuring clamp - Google Patents
Wire and cable conductor resistance measuring clamp Download PDFInfo
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- CN217467026U CN217467026U CN202221409379.8U CN202221409379U CN217467026U CN 217467026 U CN217467026 U CN 217467026U CN 202221409379 U CN202221409379 U CN 202221409379U CN 217467026 U CN217467026 U CN 217467026U
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Abstract
The utility model discloses a wire and cable conductor resistance measurement anchor clamps, including measurement station, first current measurement anchor clamps, second current measurement anchor clamps, first voltage measurement anchor clamps, second voltage measurement anchor clamps and straining device, the one end of measurement station sets up straining device, the last first current measurement anchor clamps that set up of straining device, the other end of measurement station sets up second current measurement anchor clamps, and first voltage measurement anchor clamps and second voltage measurement anchor clamps set up between first current measurement anchor clamps and second current measurement anchor clamps. Anchor clamps are light, and portable makes things convenient for field operation, and can make the measurement accuracy of wire and cable conductor higher, realizes the short-term test of on-the-spot wire and cable conductor resistance.
Description
Technical Field
The utility model belongs to the technical field of resistance measurement device, concretely relates to wire and cable conductor resistance measurement anchor clamps.
Background
The wire and cable is a main carrier of power transmission, is widely applied to the aspects of illumination, household appliances, electrical equipment and the like, and the quality of the wire and cable directly influences the life and property safety of consumers. The false wire has larger potential safety hazard, which can cause the problems of electric appliance circuit damage, electric leakage, fire hazard, etc., and the measurement of conductor resistance is a basic necessary item in the wire and cable detection.
The existing conductor resistance testing method of the wire and the cable mainly comprises an electric bridge method and a voltammetry method, wherein the electric bridge method is adopted for testing the conductor resistance of the wire and the cable, a long clamp with the length of 1 meter is usually adopted for testing, and the clamp is inconvenient to carry and carry out field operation; when a voltammetry test system is used for testing, a Kelvin four-end method clamp with the alligator clip type top end is usually adopted, and although the clamp is light and convenient to operate on site, the test accuracy of the Kelvin four-end method clamp is poor when different clamps are considered to result in different measurement results, and especially for short sample test, the error is large. Therefore, it is necessary to provide a wire and cable conductor measuring clamp which is convenient for field operation and ensures the resistance testing precision to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem and the defect that exists among the prior art, the utility model provides a wire and cable conductor resistance measurement anchor clamps uses this anchor clamps to measure wire and cable conductor resistance's measurement accuracy height, and this anchor clamps are light, and portable makes things convenient for field operation, realizes on-the-spot wire and cable conductor resistance's short-term test.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a wire and cable conductor resistance measurement anchor clamps, includes measuring station, first current measurement anchor clamps, second current measurement anchor clamps, first voltage measurement anchor clamps, second voltage measurement anchor clamps and overspeed device tensioner, the one end of measuring station sets up overspeed device tensioner, the last first current measurement anchor clamps that set up of overspeed device tensioner, the other end of measuring station sets up second current measurement anchor clamps, and first voltage measurement anchor clamps and second voltage measurement anchor clamps set up between first current measurement anchor clamps and second current measurement anchor clamps.
According to the further technical scheme, the first current measuring clamp is mounted on the tensioning device through a sliding rail, the tensioning device is mounted on the measuring table through an insulating plate, and the second current measuring clamp is mounted on the measuring table through an insulating plate.
According to the further technical scheme, the first current measuring clamp and the second current measuring clamp are identical in structure, the current measuring clamp comprises two copper blocks which are meshed with each other in a sawtooth shape, and a testing wire terminal is arranged on one of the copper blocks.
According to a further technical scheme, the copper block is connected with a rotary hand wheel through a rotating mechanism.
According to a further technical scheme, rotating mechanisms are arranged below the two copper blocks and comprise screw rods, threads matched with the threads on the screw rods are arranged on the bottom surfaces of the two copper blocks respectively, and one ends of the screw rods are fixedly connected with rotating hand wheels.
According to the technical scheme, the tensioning device comprises a bottom plate, a main screw rod, a fixing block and a tensioning rotary hand wheel, the bottom plate is close to one end of the edge of the measuring table and fixedly provided with the fixing block, a round hole is formed in the fixing block, one end of the main screw rod penetrates through the round hole and is fixedly connected with the tensioning rotary hand wheel, and the other end of the main screw rod is fixedly connected with the first current measuring clamp.
According to the further technical scheme, threads matched with the threads of the main screw rod are arranged in the round hole, and the threads of the main screw rod are meshed with the threads of the round hole.
Further technical scheme, first voltage measurement anchor clamps and second voltage measurement anchor clamps structure are the same, and the upper end of voltage measurement anchor clamps is blade formula structure, and voltage measurement anchor clamps also are equipped with the test wire terminal.
According to the further technical scheme, the measuring table is further provided with two adjusting knobs, the two adjusting knobs are in one-to-one correspondence with the two voltage measuring clamps respectively, and the voltage measuring clamps are connected with the adjusting knobs through internal linkage structures.
According to the further technical scheme, a Reset key is further arranged on the measuring table, and the Reset key is electrically connected with the two voltage measuring clamps respectively and used for controlling short circuit and open circuit of the voltages measured by the two voltage measuring clamps.
Compared with the prior art, the utility model discloses there is following beneficial effect:
the wire and cable conductor resistance measuring clamp can enable the measuring precision of a wire and cable conductor to be higher, is light and convenient, is convenient to carry, facilitates field operation, and achieves rapid detection of the resistance of the wire and cable conductor on site.
This disclosure wire and cable conductor resistance measurement anchor clamps can solve the circumstances that the school of volt-ampere method test system when using is inconvenient or can't be the school zero, realizes that conductor resistance test system more is close the school zero under the test condition to make measuring result more accurate.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic structural view of a wire and cable conductor resistance measuring clamp according to the present invention;
fig. 2 is a schematic structural view of the first current measuring clamp and the tensioning device according to the present invention;
fig. 3 is a schematic structural diagram of the second voltage measuring clamp of the present invention.
The device comprises a measuring table 1, a measuring table 2, a first current measuring clamp 3, a second current measuring clamp 4, a first voltage measuring clamp 5, a second voltage measuring clamp 6, a tensioning device 7, a bottom plate 8, a copper block 9, a test wire terminal 10, a rotating hand wheel 11, a tensioning device rotating hand wheel 12, a main screw rod 13, a fixing block 14, an adjusting knob 15, a fixing table 16, a rotating wheel 17, a connecting support 18 and a transmission belt.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The terms "mounted," "connected," "fixed," and the like in this application are to be construed broadly, e.g., as meaning a fixed connection, a detachable connection, or an integral connection; the connection may be direct, indirect through an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements; for those skilled in the art, the above terms can be understood according to specific situations, and should not be construed as limiting the present invention.
Example one
Just as the background art introduces, the measuring fixture that the conductor resistance test method of current wire and cable used is not convenient for carry out field operation or the measuring accuracy is relatively poor, in order to solve above-mentioned problem, the utility model provides a wire and cable conductor resistance measuring fixture, the field operation of both being convenient for uses, can guarantee the precision of resistance test again, realizes the short-term test of on-the-spot wire and cable conductor resistance.
As shown in fig. 1, the utility model provides a wire and cable conductor resistance measurement anchor clamps, including measuring station 1, two current measurement anchor clamps, two voltage measurement anchor clamps and straining device, the one end of measuring station 1 sets up straining device 6, set up first current measurement anchor clamps 2 on the straining device 6, the other end of measuring station 1 sets up second current measurement anchor clamps 3, two current measurement anchor clamps set up the outermost end at measuring station 1 respectively, two voltage measurement anchor clamps set up between two current measurement anchor clamps, and two voltage measurement anchor clamps are at a distance of not less than 30CM, can enough guarantee the accuracy of result, can reduce the size of anchor clamps again, make anchor clamps lighter, portable.
The first current measuring clamp 2 is mounted on the tensioning device 6 through a sliding rail, the tensioning device 6 is mounted on the measuring table 1 through an insulating plate, and the second current measuring clamp 3 is mounted on the measuring table 1 through an insulating plate.
As shown in fig. 2, the first current measuring clamp 2 includes two copper blocks 8 having a toothed shape which are engaged with each other, and the cable to be measured is placed between the two copper blocks, and the cable to be measured is clamped by the two copper blocks. Meanwhile, a test wire terminal 9 is arranged on one copper block, and the test wire terminal is connected with a conductor resistance test system through a connection test wire.
The copper blocks 8 are connected with the rotary hand wheel 10 through the rotating mechanism, the rotary hand wheel 10 is rotated to control the two copper blocks 8 in the two current measuring clamps to move in the direction perpendicular to the direction of the measured cable, the cable is clamped through the movement of the copper blocks, meanwhile, the deviation of the center of the cable is not caused, and the four points of the measured cable on the two current measuring clamps and the two voltage measuring clamps are ensured to be in the same line.
As an implementation mode, one end of each of the two copper blocks is respectively in telescopic connection with the rotating mechanism, a screw rod is arranged below each of the two copper blocks, threads matched with the threads on the screw rod are arranged on the bottom surface of each of the copper blocks, one end of each of the screw rods is fixedly connected with a rotating hand wheel, and the rotating hand wheel rotates to drive the screw rods to rotate, so that the two copper blocks are driven to move.
As shown in fig. 2, the first current measuring clamp 2 is installed on the tensioning device 6 through a slide rail, the first current measuring clamp 2 and the second current measuring clamp 3 are identical in structure, the tensioning device 6 comprises a bottom plate 7, a main screw 12, a fixed block 13 and a tensioning device rotating hand wheel 11, the bottom plate is close to one end of the edge of the measuring table 1 and fixedly installed on the fixed block 13, a round hole is formed in the fixed block 13, threads matched with the threads of the main screw 12 are arranged in the round hole, one end of the main screw 12 penetrates through the round hole and is fixedly connected with the tensioning device rotating hand wheel 11, and the other end of the main screw 12 is fixedly connected with the first current measuring clamp 2. When the main screw rod penetrates through the round hole, the threads of the main screw rod are meshed with the threads of the round hole.
Through rotating the rotatory hand wheel of straining device, drive first current measurement anchor clamps and remove along survey cable direction, and then can realize taut by survey cable, make the cable reduce crooked, guarantee by the accuracy of survey cable length, reduce measuring error.
As shown in fig. 1, the two voltage measuring clamps are a first voltage measuring clamp 4 and a second voltage measuring clamp 5, respectively, and the first voltage measuring clamp 4 and the second voltage measuring clamp 5 have the same structure. The upper end of the voltage measuring clamp is of a blade structure, so that point contact with a cable to be measured is realized, and the measuring precision is guaranteed. The voltage measuring clamp is also provided with a test wire terminal, and the test wire terminal is connected with the conductor resistance testing system through a connecting test wire. The two voltage measurement clamps are integrally machined, so that the distance between the two voltage measurement clamps is more accurate, and the precision is +/-0.05%.
The measuring table 1 is further provided with two adjusting knobs 14, the two adjusting knobs correspond to two voltage measuring clamps arranged on the measuring table 1 one by one respectively, the voltage measuring clamps are connected with the adjusting knobs through internal linkage structures, and the voltage ends are automatically separated from or automatically contacted with the wires by adjusting the lifting of the voltage measuring clamps through the adjusting knobs.
Specifically, as shown in fig. 3, the linkage structure includes two fixed tables 15 that are symmetrical from top to bottom and have a fixed distance, the fixed tables are provided with circular holes, one end of the screw rod is fixedly connected with the adjusting knob, and the other end of the screw rod penetrates through the circular holes on the two fixed tables and is fixedly connected with the rotating wheel 16. The voltage measurement clamp is provided with a connecting support 17, the connecting support 17 is provided with a hole, threads matched with the threads on the screw rod are arranged inside the hole, the connecting support is sleeved on the screw rod between the two fixing tables through the hole, and when the adjusting knob is rotated, the screw rod rotates to further drive the voltage measurement clamp to move up and down.
Two adjust knobs are respectively arranged in one-to-one correspondence with the two voltage measuring clamps and the two linkage structures, and as an implementation mode, the two rotating wheels are connected through a transmission belt 18. When a certain adjusting knob is rotated to adjust the up-and-down movement of the voltage measuring clamp at the side, the rotating wheel at the bottom of the adjusting knob is driven to rotate, the rotating wheel drives the rotating wheel at the other side to rotate through the conveying belt, and then the voltage measuring clamp at the other end synchronously moves up and down, so that the two voltage measuring clamps are always positioned on the same horizontal plane, and the measuring precision is improved.
And a Reset key is also arranged on the measuring table 1, is respectively and electrically connected with the two voltage measuring clamps and is used for controlling the short circuit and the open circuit of the voltage measured by the two voltage measuring clamps. When a Reset key is pressed, the voltages measured by the two voltage measuring clamps are short-circuited, and zero calibration operation is performed by matching with a conductor resistance testing system; when the Reset key is not pressed, the voltages measured by the two voltage measuring clamps are disconnected, and the conductor resistance is measured by matching with a conductor resistance testing system.
The utility model discloses a concrete application steps as follows:
the method comprises the following steps of placing a tested cable between two copper blocks 8 of two current measuring clamps, clamping the tested cable by rotating a rotating hand wheel 10 of the current measuring clamps, and simultaneously rotating a rotating hand wheel 11 of a tensioning device to drive a first current measuring clamp 2 to move along the direction of the tested cable so as to tension the tested cable;
connecting the test wire terminals of the two current measuring clamps and the two voltage measuring clamps with a conductor resistance test system through test wires respectively;
adjusting two adjusting knobs 14 on the measuring table 1 to enable two voltage measuring clamps to descend without contacting with a measured cable, and pressing a Reset key to complete zero clearing and zero calibration of the conductor resistance testing system;
then, the two adjusting knobs 14 on the measuring table 1 are adjusted again to lift the two voltage measuring clamps to make contact with the tested cable point, and at this time, the resistance data of the conductor resistance testing system can be read.
The wire and cable conductor resistance measuring clamp is simple to operate and convenient to carry on site, solves the problem that zero calibration is inconvenient or cannot be performed when a voltammetry testing system is used, and enables a testing result to be more accurate through zero calibration.
Although the specific embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications or variations can be made by those skilled in the art without inventive efforts on the basis of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a wire and cable conductor resistance measurement anchor clamps which characterized in that: the device comprises a measuring table, a first current measuring clamp, a second current measuring clamp, a first voltage measuring clamp, a second voltage measuring clamp and a tensioning device, wherein the tensioning device is arranged at one end of the measuring table, the first current measuring clamp is arranged on the tensioning device, the second current measuring clamp is arranged at the other end of the measuring table, and the first voltage measuring clamp and the second voltage measuring clamp are arranged between the first current measuring clamp and the second current measuring clamp.
2. The wire and cable conductor resistance measurement fixture of claim 1, wherein: the first current measuring clamp is installed on the tensioning device through a sliding rail, the tensioning device is installed on the measuring table through an insulating plate, and the second current measuring clamp is installed on the measuring table through an insulating plate.
3. The wire and cable conductor resistance measurement fixture of claim 1, wherein: the first current measuring clamp and the second current measuring clamp are identical in structure, each current measuring clamp comprises two copper blocks which are meshed in a saw-tooth shape, and a testing line terminal is arranged on one of the copper blocks.
4. The wire and cable conductor resistance measurement fixture of claim 3, wherein: the copper block is connected with a rotary hand wheel through a rotating mechanism.
5. The wire and cable conductor resistance measurement fixture of claim 4, wherein: and a rotating mechanism is arranged below the two copper blocks and comprises a screw rod, threads matched with the threads on the screw rod are respectively arranged on the bottom surfaces of the two copper blocks, and one end of the screw rod is fixedly connected with a rotating hand wheel.
6. The wire and cable conductor resistance measurement fixture of claim 1, wherein: the tensioning device comprises a bottom plate, a main screw rod, a fixing block and a tensioning rotary hand wheel, wherein the bottom plate is close to one end of the edge of the measuring table and fixedly provided with the fixing block, the fixing block is provided with a round hole, one end of the main screw rod penetrates through the round hole and is fixedly connected with the tensioning rotary hand wheel, and the other end of the main screw rod is fixedly connected with the first current measuring clamp.
7. The wire and cable conductor resistance measurement fixture of claim 6, wherein: and threads matched with the threads of the main screw rod are arranged in the round hole, and the threads of the main screw rod are meshed with the threads of the round hole.
8. The wire and cable conductor resistance measurement fixture of claim 1, wherein: the first voltage measuring clamp and the second voltage measuring clamp are identical in structure, the upper end of the voltage measuring clamp is of a blade type structure, and a test line wiring terminal is arranged on the voltage measuring clamp.
9. The wire and cable conductor resistance measurement fixture of claim 1, wherein: the measuring table is further provided with two adjusting knobs, the two adjusting knobs are in one-to-one correspondence with the two voltage measuring clamps respectively, and the voltage measuring clamps are connected with the adjusting knobs through internal linkage structures.
10. The wire and cable conductor resistance measurement fixture of claim 1, wherein: and the measuring table is also provided with a Reset key which is respectively electrically connected with the two voltage measuring clamps and used for controlling the short circuit and the open circuit of the voltages measured by the two voltage measuring clamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221409379.8U CN217467026U (en) | 2022-06-07 | 2022-06-07 | Wire and cable conductor resistance measuring clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221409379.8U CN217467026U (en) | 2022-06-07 | 2022-06-07 | Wire and cable conductor resistance measuring clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217467026U true CN217467026U (en) | 2022-09-20 |
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ID=83235241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221409379.8U Active CN217467026U (en) | 2022-06-07 | 2022-06-07 | Wire and cable conductor resistance measuring clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217467026U (en) |
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2022
- 2022-06-07 CN CN202221409379.8U patent/CN217467026U/en active Active
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