CN102156215B - Closed-loop electric test clamp - Google Patents
Closed-loop electric test clamp Download PDFInfo
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- CN102156215B CN102156215B CN 201110071987 CN201110071987A CN102156215B CN 102156215 B CN102156215 B CN 102156215B CN 201110071987 CN201110071987 CN 201110071987 CN 201110071987 A CN201110071987 A CN 201110071987A CN 102156215 B CN102156215 B CN 102156215B
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- good conduction
- clamp holder
- clamp
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Abstract
The invention discloses a closed-loop electric test clamp, which comprises left and right good conductive clamping handles, wherein the shapes of the opposite sides of the two clamping handles are similar to the section shape of a clamped tested conductive object, and the opposite sides are provided with at least one good conductive convex tooth contacted with the tested conductive object respectively, and the front ends of the left and right good conductive clamping handles have good conductive hinge movable connected structures consisting of longitudinal through holes and hinge shafts inserted into the longitudinal through holes; and the rear ends of the clamping handles have screw fixedly-connected structures consisting of transverse through holes, bolts inserted into the transverse through holes and fastening nuts adapted with the bolts. The clamp is convenient for assembly and disassembly, and does not affect normal operation of the tested conductive object; by adjusting the connection of the fastening nuts and the bolts and providing pressure for the good conductive convex teeth of the opposite sides of the left and right good conductive clamping handles and the tested conductive object, the clamping is firm, and the contact resistance is reduced as much as possible; and the sampling voltage of a voltage acquisition terminal is basically close to the actual voltage of the clamped tested conductive object when the current flows, so that the test precision can be remarkably improved.
Description
Technical field
The present invention relates to fixture, particularly relate to a kind of closed-loop electric test clamp.
Background technology
It is a kind of interactive method of attachment of wire pressure drop generation of avoiding that Kelvin (Kelvin) connects, when tested shaping claviforms such as circuit, components and parts, conductor is carried out electric performance test, shaping claviform Injection Current or sampling voltage to tested all need to adopt voltage testing clip.The existing electric current that is used for electrical testing injects terminal and the voltage acquisition terminal is generally independent metal parts.electric current injection side attached bag as shown in Figure 3 includes conductive spacer 6 and cable 7, the voltage acquisition terminal comprises collection conductive spacer 13 and cable 10, injecting conductive spacer 6 and collection conductive spacer 13 is fixedly connected with tested shaping claviform 15 by bolt 16 and clamp nut, no matter inject conductive spacer 6 above or below collection conductive spacer 13, electric current flows through when gathering conductive spacer 13 all can produce pressure drop on its intrinsic resistance, cause the sampled voltage of voltage acquisition terminal lower than the virtual voltage of tested shaping claviform 15, this test error directly affects measuring accuracy.
Summary of the invention
Technical matters to be solved by this invention is the defective that makes up above-mentioned prior art, a kind of closed-loop electric test clamp is provided, namely peripheral with 360 ° be looped around such as the tested shaping claviform such as circuit, components and parts, conductor with the closed loop encirclement, carry out electric current and inject and voltage acquisition.
Technical matters of the present invention is solved by the following technical programs.
This closed-loop electric test clamp, be used for the tested shaping claviform of clamping, comprise left good conduction clamp holder and right good conduction clamp holder, the good conduction clamp holder in a described left side and the electric current of the Testing apparatus of the tested shaping claviform of test inject terminal and voltage acquisition terminal one and are connected, the good conduction clamp holder in the described right side and described electric current injection terminal be connected another of voltage acquisition terminal and be connected.
The characteristics of this closed-loop electric test clamp are:
The opposite side shape of the good conduction clamp holder in a described left side and right good conduction clamp holder is close with the tested shaping claviform cross sectional shape of clamping, and opposite side is respectively equipped with the good conduction double wedge that at least one contacts with tested shaping claviform.
The good conduction hinge movable connection structure that the front end of the good conduction clamp holder in a described left side and right good conduction clamp holder is comprised of longitudinal hole and the hinge that inserts longitudinal hole.
The rear end of the good conduction clamp holder in a described left side and right good conduction clamp holder by cross through hole, insert the bolt of cross through hole and the screw fixed connection structure that forms with the adaptive clamp nut of bolt, by adjusting being connected of clamp nut and bolt, to providing pressure between the good conduction double wedge of the opposite side of the good conduction clamp holder in a described left side and right good conduction clamp holder and tested shaping claviform, both clamping was firm, reduce again contact resistance as far as possible, be beneficial to improve measuring accuracy.
Technical matters of the present invention is solved by following further technical scheme.
It is that annular or hook-shaped electric current inject terminal that described electric current injects terminal.
Described voltage acquisition terminal is annular or hook-shaped voltage acquisition terminal.
Described bolt runs through successively from left to right described electric current and injects another annular or the unci that the annular of of terminal and voltage acquisition terminal or unci, the cross through hole of good conduction clamp holder rear end, a described left side, the cross through hole of good conduction clamp holder rear end, the described right side, described electric current inject terminal and voltage acquisition terminal, and the clamp nut in its outside.
Be provided with insulation sleeve between the annular of described bolt and electric current injection terminal or voltage acquisition terminal or unci, be provided with insulation sleeve between the annular of described clamp nut and voltage acquisition terminal or electric current injection terminal or unci.For electrically insulated from one another between the annular of injecting terminal and voltage acquisition terminal at described bolt, clamp nut and described electric current or unci, to guarantee that the electric current that injects good conduction clamp holder does not flow through the voltage acquisition terminal by described bolt, clamp nut, avoid the detection voltage of voltage acquisition terminal to be subject to the impact of Injection Current, improve the voltage acquisition precision, the sampled voltage of voltage acquisition terminal near the virtual voltage of the tested shaping claviform of clamping, is beneficial to further improve measuring accuracy substantially when electric current flows through.
Technical matters of the present invention is solved by following further technical scheme.
The annular section that described electric current injects terminal is to inject conductive spacer.
The annular section of described voltage acquisition terminal is to gather conductive spacer.
Described electric current injects terminal and is connected with the injection cable, and described injection cable is connected with described Testing apparatus.
Described voltage acquisition terminal is connected with the collection cable, and described collection cable is connected with described Testing apparatus.
Be provided with insulation sleeve between described bolt and injection conductive spacer or collection conductive spacer, be provided with insulation sleeve between described clamp nut and collection conductive spacer or injection conductive spacer.Be used at described bolt, clamp nut and described injection conductive spacer and gather electrically insulated from one another between conductive spacer.
Described bolt is inserted in successively from left to right insulation sleeve, injects conductive spacer, the remainder of described bolt runs through the cross through hole of the cross through hole of left good conduction clamp holder rear end, right good conduction clamp holder rear end more successively, then is inserted in successively and gathers conductive spacer, insulation sleeve, clamp nut.
The good conduction clamp holder in a described left side and right good conduction clamp holder, and the hinge movable connection structure of front end is all made by identical good conductive material one-shot forming.
The good conduction clamp holder in a described left side and right good conduction clamp holder are made by identical good conductive metallic material one-shot forming, and the hinge movable connection structure of its front end is made by non-conductive metal material.
The good conduction double wedge of the good conduction clamp holder in a described left side and right good conduction clamp holder opposite side is a kind of in trapezoidal double wedge, triangle double wedge and semicircle double wedge.
The beneficial effect that the present invention is compared with the prior art is:
closed-loop electric test clamp of the present invention needn't carry out such as boring tested shaping claviform when installing, the physical damage of mounting screw, also needn't disconnect being connected of tested shaping claviform and other parts, have mounting or dismounting convenient, do not affect the characteristics to the normal operation of tested shaping claviform, and only need be by adjusting being connected of clamp nut and bolt, to providing pressure between the good conduction double wedge of the opposite side of the good conduction clamp holder in a described left side and right good conduction clamp holder and tested shaping claviform, both clamping was firm, reduce again contact resistance as far as possible, the sampled voltage of voltage acquisition terminal is substantially near the virtual voltage of the tested shaping claviform of clamping when electric current flows through, can significantly improve measuring accuracy.
Description of drawings
Fig. 1 is the composition structure and use constitutional diagram of the specific embodiment of the invention one;
Fig. 2 is the composition structure and use constitutional diagram of the specific embodiment of the invention two;
Fig. 3 is without the use view of voltage testing clip in prior art.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention will be described.
Embodiment one
A kind of closed-loop electric test clamp as shown in Figure 1, being used for Kelvin's method of attachment carries out electric current to the tested shaping claviform 11 with rectangle cross section and injects and voltage sampling, comprise the left good conduction clamp holder 1 with the electric current injection side sub-connection of the Testing apparatus of the tested shaping claviform 11 of test, and the right good conduction clamp holder 2 that is connected with the voltage acquisition terminal of the Testing apparatus of the tested shaping claviform 11 of test.Left good conduction clamp holder 1 and right good conduction clamp holder 2 are made by identical good conductive material one-shot forming.
The opposite side shape of left good conduction clamp holder 1 and right good conduction clamp holder 2 is close with the rectangle cross sectional shape of the tested shaping claviform 11 of clamping, and left good conduction clamp holder 1 opposite side is provided with two good conduction double wedges 9 that contact with tested shaping claviform 11, and right good conduction clamp holder 2 opposite sides are provided with a good conduction double wedge 12 that contacts with tested shaping claviform 11.
The good conduction hinge movable connection structure that the front end of left good conduction clamp holder 1 and right good conduction clamp holder 2 is comprised of longitudinal hole and the hinge 3 that inserts longitudinal hole.
The rear end of left good conduction clamp holder 1 and right good conduction clamp holder 2 by cross through hole, insert the bolt 4 of cross through hole and the screw fixed connection structure that forms with the adaptive clamp nut 8 of bolt 4.By adjusting being connected of clamp nut 8 and bolt 4, to the good conduction double wedge 9 of the opposite side of the good conduction clamp holder 1 in a left side and right good conduction clamp holder 2,12 and tested shaping claviform 11 between pressure is provided, both clamping was firm, reduced again contact resistance as far as possible, was beneficial to improve measuring accuracy.
Electric current injects terminal and the voltage acquisition terminal is respectively ring current injection terminal and annular voltage collection terminal, and electric current injects the annular section of terminal and voltage acquisition terminal, is respectively to inject conductive spacer 6 and collection conductive spacer 13.Inject conductive spacer 6 and is connected conductive spacer 13 respectively with injection cable 7 be connected cable 10 and be connected, injection cable 7 be connected cable 10 and be connected with Testing apparatus respectively.
at bolt 4, be provided with insulation sleeve 5 between clamp nut 8 and injection conductive spacer 6 and collection conductive spacer 13, be used at bolt 4, electrically insulated from one another between clamp nut 8 and injection conductive spacer 6 and collection conductive spacer 13, to guarantee injecting the electric current of good conduction clamp holder not by described bolt, clamp nut flows through the voltage acquisition terminal, avoid the detection voltage of voltage acquisition terminal to be subject to the impact of Injection Current, improve the voltage acquisition precision, the sampled voltage of voltage acquisition terminal is substantially near the virtual voltage of the tested shaping claviform of clamping when electric current flows through, be beneficial to further improve measuring accuracy.
The closed-loop electric test clamp installation method of this embodiment one is as follows:
1) tested shaping claviform 11 is put opposite side with the good conduction clamp holder 1 in a left side and right good conduction clamp holder 2, adjust angle between left good conduction clamp holders 1 and right good conduction clamp holder 2 by hinge 3, make the good conduction double wedge 9,12 of the opposite side of left good conduction clamp holder 1 and right good conduction clamp holder 2 contact with tested shaping claviform 11;
2) bolt 4 is inserted in from left to right successively insulation sleeve 5, injection conductive spacer 6, the cross through hole that again remainder of bolt 4 is run through successively the cross through hole of left good conduction clamp holder 1 rear end, right good conduction clamp holder 2 rear ends, be inserted in successively again and gather conductive spacer 13, insulation sleeve 5, clamp nut 8, employing is with the screwdriver of moment indication, the moment of adjusting bolt 4 is till the required value, and required value is generally 3 Newton meters;
3) in case of necessity, adopt milliohmmeter to measure to inject conductive spacer 6 and gather contact resistance between conductive spacer 13, by adjusting being connected of clamp nut 8 and bolt 4, make contact resistance till the required value, required value is usually less than 1 milliohm.
Embodiment two
A kind of closed-loop electric test clamp as shown in Figure 2, basic composition and installation method are with embodiment one, and difference is: the tested shaping claviform 14 of its clamping has round section; Left good conduction clamp holder 1 and right good conduction clamp holder 2 both sides have respectively three with good conduction double wedge 9 and the good conduction double wedge 12 that tested shaping claviform 14 rotational symmetry distribute.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of submitting to.
Claims (10)
1. closed-loop electric test clamp, be used for the tested shaping claviform of clamping, comprise left good conduction clamp holder and right good conduction clamp holder, the good conduction clamp holder in a described left side is connected with the electric current injection terminal of the Testing apparatus of testing tested shaping claviform and of voltage acquisition terminal, the good conduction clamp holder in the described right side and described electric current inject terminal and are connected another of voltage acquisition terminal and are connected, and it is characterized in that:
The opposite side shape of the good conduction clamp holder in a described left side and right good conduction clamp holder is close with the tested shaping claviform cross sectional shape of clamping, and opposite side is respectively equipped with the good conduction double wedge that at least one contacts with tested shaping claviform;
The good conduction hinge movable connection structure that the front end of the good conduction clamp holder in a described left side and right good conduction clamp holder is comprised of longitudinal hole and the hinge that inserts longitudinal hole;
The rear end of the good conduction clamp holder in a described left side and right good conduction clamp holder by cross through hole, insert the bolt of cross through hole and the screw fixed connection structure that forms with the adaptive clamp nut of bolt, by adjusting being connected of clamp nut and bolt, to providing pressure between the good conduction double wedge of the opposite side of the good conduction clamp holder in a described left side and right good conduction clamp holder and tested shaping claviform.
2. closed-loop electric test clamp as claimed in claim 1 is characterized in that:
It is that annular or hook-shaped electric current inject terminal that described electric current injects terminal;
Described voltage acquisition terminal is annular or hook-shaped voltage acquisition terminal;
Described bolt runs through successively from left to right described electric current and injects another annular or the unci that the annular of of terminal and voltage acquisition terminal or unci, the cross through hole of good conduction clamp holder rear end, a described left side, the cross through hole of good conduction clamp holder rear end, the described right side, described electric current inject terminal and voltage acquisition terminal, and the clamp nut in its outside.
3. closed-loop electric test clamp as claimed in claim 1 or 2 is characterized in that:
Be provided with insulation sleeve between the annular of described bolt and electric current injection terminal or voltage acquisition terminal or unci, be provided with insulation sleeve between the annular of described clamp nut and voltage acquisition terminal or electric current injection terminal or unci.
4. closed-loop electric test clamp as claimed in claim 3 is characterized in that:
The annular section that described electric current injects terminal is to inject conductive spacer;
The annular section of described voltage acquisition terminal is to gather conductive spacer.
5. closed-loop electric test clamp as claimed in claim 4 is characterized in that:
Described electric current injects terminal and is connected with the injection cable, and described injection cable is connected with described Testing apparatus;
Described voltage acquisition terminal is connected with the collection cable, and described collection cable is connected with described Testing apparatus.
6. closed-loop electric test clamp as claimed in claim 5 is characterized in that:
Be provided with insulation sleeve between described bolt and injection conductive spacer or collection conductive spacer, be provided with insulation sleeve between described clamp nut and collection conductive spacer or injection conductive spacer.
7. closed-loop electric test clamp as claimed in claim 6 is characterized in that:
Described bolt is inserted in successively from left to right insulation sleeve, injects conductive spacer, the remainder of described bolt runs through the cross through hole of the cross through hole of left good conduction clamp holder rear end, right good conduction clamp holder rear end more successively, then is inserted in successively and gathers conductive spacer, insulation sleeve, clamp nut.
8. closed-loop electric test clamp as claimed in claim 7 is characterized in that:
The good conduction clamp holder in a described left side and right good conduction clamp holder, and the hinge movable connection structure of front end is all made by identical good conductive material one-shot forming.
9. closed-loop electric test clamp as claimed in claim 7 is characterized in that:
The good conduction clamp holder in a described left side and right good conduction clamp holder are made by identical good conductive metallic material one-shot forming, and the hinge movable connection structure of its front end is made by non-conductive metal material.
10. closed-loop electric test clamp as claimed in claim 8 or 9 is characterized in that:
The good conduction double wedge of the good conduction clamp holder in a described left side and right good conduction clamp holder opposite side is a kind of in trapezoidal double wedge, triangle double wedge and semicircle double wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110071987 CN102156215B (en) | 2011-03-24 | 2011-03-24 | Closed-loop electric test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110071987 CN102156215B (en) | 2011-03-24 | 2011-03-24 | Closed-loop electric test clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102156215A CN102156215A (en) | 2011-08-17 |
| CN102156215B true CN102156215B (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110071987 Expired - Fee Related CN102156215B (en) | 2011-03-24 | 2011-03-24 | Closed-loop electric test clamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN102156215B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499783B (en) * | 2013-09-30 | 2016-05-11 | 贵州航天计量测试技术研究所 | A kind of diode detection device and using method thereof |
| CN104198812B (en) * | 2014-08-12 | 2017-12-19 | 国家电网公司 | A kind of stress_responsive genes instrument |
| CN107039787A (en) * | 2017-05-25 | 2017-08-11 | 国网福建德化县供电有限公司 | A kind of attachment structure |
| CN111239443A (en) * | 2020-02-24 | 2020-06-05 | 国网天津市电力公司电力科学研究院 | Clamp for detecting direct current resistance of distribution network cable |
| CN116359801A (en) * | 2023-02-06 | 2023-06-30 | 武汉中成智创科技有限公司 | Cable connection fitting crimping resistance detection device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2155571Y (en) * | 1992-07-13 | 1994-02-09 | 张力 | Universal testing clamp for low-resistance testers |
| JP2002098714A (en) * | 2000-09-25 | 2002-04-05 | Togami Electric Mfg Co Ltd | Clamp type split transformer |
| WO2008132499A1 (en) * | 2007-05-01 | 2008-11-06 | Nigel Scott | An electrical contact clip |
| CN201518034U (en) * | 2009-10-19 | 2010-06-30 | 巩义市供电公司 | Test voltage testing clip |
| CN201765255U (en) * | 2010-06-28 | 2011-03-16 | 北京博电新力电力***仪器有限公司 | Heavy-current test clamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5651672A (en) * | 1979-10-03 | 1981-05-09 | Susumu Yamaguchi | Electric-wire inserter for clamp type ct for ammeter |
| JP3549354B2 (en) * | 1997-01-30 | 2004-08-04 | 日置電機株式会社 | Clamp sensor |
-
2011
- 2011-03-24 CN CN 201110071987 patent/CN102156215B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2155571Y (en) * | 1992-07-13 | 1994-02-09 | 张力 | Universal testing clamp for low-resistance testers |
| JP2002098714A (en) * | 2000-09-25 | 2002-04-05 | Togami Electric Mfg Co Ltd | Clamp type split transformer |
| WO2008132499A1 (en) * | 2007-05-01 | 2008-11-06 | Nigel Scott | An electrical contact clip |
| CN201518034U (en) * | 2009-10-19 | 2010-06-30 | 巩义市供电公司 | Test voltage testing clip |
| CN201765255U (en) * | 2010-06-28 | 2011-03-16 | 北京博电新力电力***仪器有限公司 | Heavy-current test clamp |
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| Publication number | Publication date |
|---|---|
| CN102156215A (en) | 2011-08-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20110817 Assignee: Yi Ruilai Science and Technology Development Co., Ltd. of Shenzhen Assignor: Shenzhen RELAT Electronic Technology Co., Ltd. Contract record no.: 2013440020369 Denomination of invention: Closed-loop electric test clamp Granted publication date: 20130626 License type: Exclusive License Record date: 20131206 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EM01 | Change of recordation of patent licensing contract |
Change date: 20150410 Contract record no.: 2013440020369 Assignee after: Shenzhen Yi Ruilai Polytron Technologies Inc Assignee before: Yi Ruilai Science and Technology Development Co., Ltd. of Shenzhen |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20200324 |