CN102156215A - Closed-loop electric test clamp - Google Patents
Closed-loop electric test clamp Download PDFInfo
- Publication number
- CN102156215A CN102156215A CN2011100719872A CN201110071987A CN102156215A CN 102156215 A CN102156215 A CN 102156215A CN 2011100719872 A CN2011100719872 A CN 2011100719872A CN 201110071987 A CN201110071987 A CN 201110071987A CN 102156215 A CN102156215 A CN 102156215A
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- clamp holder
- terminal
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- conduction
- good conduction
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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 anchor clamps, particularly relate to a kind of closed-loop type electrical testing folder.
Background technology
It is a kind ofly to avoid the lead pressure drop to produce interactive method of attachment that Kelvin (Kelvin) connects, when carrying out electric performance test such as tested conduction objects such as circuit, components and parts, conductors, to tested conduction object injection current or sampling voltage, all need to adopt the electrical testing folder.The existing electric current that is used for electrical testing injects terminal and the voltage acquisition terminal generally is independent metal parts.Electric current as shown in Figure 3 injects terminal and comprises injection conductive spacer 6 and cable 7, the voltage acquisition terminal comprises gathers conductive spacer 13 and cable 10, injecting conductive spacer 6 is fixedlyed connected with tested conduction object 15 with clamp nut by bolt 16 with collection conductive spacer 13, 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 to be lower than the virtual voltage of tested conduction object 15, this test error directly influences measuring accuracy.
Summary of the invention
Technical matters to be solved by this invention is the defective that remedies above-mentioned prior art, a kind of closed-loop type electrical testing folder is provided, surround promptly with 360 ° be looped around with closed loop, carry out electric current and inject and voltage acquisition such as tested conduction object peripheries such as circuit, components and parts, conductors.
Technical matters of the present invention is solved by the following technical programs.
This closed-loop type electrical testing folder, be used for the tested conduction object of clamping, comprise a left side good conduction clamp holder and right good conduction clamp holder, a described left side is very conducted electricity clamp holder and the electric current of the Testing apparatus of the tested conduction object of test and is injected terminal and voltage acquisition terminal one and be connected, and the described right side is very conducted electricity another of clamp holder and described electric current injection terminal and described voltage acquisition terminal and is connected.
The characteristics of this closed-loop type electrical testing folder are:
It is close with the tested conduction object cross sectional shape of clamping that the opposite side shape of clamp holder and right good conduction clamp holder is very conducted electricity on a described left side, and opposite side is respectively equipped with the good conduction double wedge that at least one contacts with tested conduction object.
The good conduction hinge movable connection structure that the good front end that conducts electricity clamp holder of the clamp holder and the right side is made up of longitudinal hole and the hinge that inserts longitudinal hole very conducts electricity on a described left side.
A described left side very conduct electricity the rear end of clamp holder and right good conduction clamp holder by cross through hole, insert the bolt of cross through hole and the screw fixed connection structure of forming with the adaptive clamp nut of bolt, by adjusting being connected of clamp nut and bolt, a described left side very conducted electricity provides pressure between the good conduction double wedge of opposite side of clamp holder and right good conduction clamp holder and the tested conduction object, both clamping was firm, reduce contact resistance again 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 run through successively from left to right described electric current inject one annular of terminal and voltage acquisition terminal or unci, a described left side very conduct electricity the cross through hole of clamp holder rear end, the described right side very conduct electricity the cross through hole of clamp holder rear end, described electric current inject terminal and voltage acquisition terminal another annular or the clamp nut in unci and its outside.
Described bolt, be provided with insulation sleeve between the annular of clamp nut and described electric current injection terminal and voltage acquisition terminal or the unci, be used at described bolt, electrically insulated from one another between the annular of clamp nut and described electric current injection terminal and voltage acquisition terminal or the unci, 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 subjected to the influence of injection current, improve the voltage acquisition precision, the sampled voltage of voltage acquisition terminal near the virtual voltage of the tested conduction object 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 again 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, clamp nut and described injection conductive spacer and the collection conductive spacer, be used for electrically insulated from one another between described bolt, clamp nut and described injection conductive spacer and collection conductive spacer.
Described bolt is inserted in insulation sleeve from left to right successively, injects conductive spacer, the remainder of described bolt runs through the cross through hole of the cross through hole of good conduction clamp holder rear end, a left side, right good conduction clamp holder rear end more successively, is inserted in successively and gathers conductive spacer, insulation sleeve, clamp nut.
Clamp holder and right good conduction clamp holder are very conducted electricity in a described left side, and the hinge movable connection structure of front end is all made by identical good conductive material one-shot forming.
A described left side is very conducted electricity clamp holder and is made by identical good conductive metallic material one-shot forming with right good conduction clamp holder, and the hinge movable connection structure of its front end is made by non-conductive metal material.
It is a kind of in trapezoidal double wedge, triangle double wedge and the semicircle double wedge that the good conduction double wedge of clamp holder and right good conduction clamp holder opposite side is very conducted electricity on a described left side.
The beneficial effect that the present invention is compared with the prior art is:
When installing, closed-loop type electrical testing folder of the present invention needn't carry out such as boring tested conduction object, the physical damage of mounting screw, also needn't disconnect being connected of tested conduction object and other parts, it is convenient to have mounting or dismounting, do not influence characteristics to the normal operation of tested conduction object, and only need be by adjusting being connected of clamp nut and bolt, a described left side very conducted electricity provides pressure between the good conduction double wedge of opposite side of clamp holder and right good conduction clamp holder and the tested conduction object, both clamping was firm, reduce contact resistance again as far as possible, the sampled voltage of voltage acquisition terminal near the virtual voltage of the tested conduction object of clamping, can significantly improve measuring accuracy substantially when electric current flows through.
Description of drawings
Fig. 1 is the composition structure and the user mode figure of the specific embodiment of the invention one;
Fig. 2 is the composition structure and the user mode figure of the specific embodiment of the invention two;
Fig. 3 is the user mode synoptic diagram of no electrical testing folder in the 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 type electrical testing folder as shown in Figure 1, be used for Kelvin's method of attachment the tested conduction object 11 with rectangle cross section is carried out electric current injection and voltage sampling, comprise with the electric current of the Testing apparatus of testing tested conduction object 11 and inject a left side good conduction clamp holder 1 that terminal is connected, and the right good conduction clamp holder 2 that is connected with the voltage acquisition terminal of the Testing apparatus of testing tested conduction object 11.A left side good conduction clamp holder 1 is made by identical good conductive material one-shot forming with right good conduction clamp holder 2.
The opposite side shape of a left side good conduction clamp holder 1 and right good conduction clamp holder 2 is close with the rectangle cross sectional shape of the tested conduction object 11 of clamping, and a left side good conduction clamp holder 1 opposite side is provided with two good conduction double wedges 9 that contacts with tested conduction object 11, and right clamp holder 2 opposite sides that very conduct electricity are provided with a good conduction double wedge 12 that contacts with tested conduction object 11.
The good conduction hinge movable connection structure that the front end of a left side good conduction clamp holder 1 and right good conduction clamp holder 2 is made up of the hinge 3 of longitudinal hole and insertion longitudinal hole.
The rear end of a left side 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 of forming with the adaptive clamp nut 8 of bolt 4.By adjusting being connected of clamp nut 8 and bolt 4, a left side very conducted electricity provides pressure between the good conduction double wedge 9,12 of opposite side of clamp holder 1 and right good conduction clamp holder 2 and the tested conduction object 11, both clamping was firm, reduced contact resistance again 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 gather conductive spacer 13.Injection conductive spacer 6 is connected with collection cable 10 with injection cable 7 respectively with collection conductive spacer 13, injects cable 7 and is connected with Testing apparatus respectively with collection cable 10.
At bolt 4, be provided with insulation sleeve 5 between clamp nut 8 and injection conductive spacer 6 and the collection conductive spacer 13, be used at bolt 4, electrically insulated from one another between clamp nut 8 and injection conductive spacer 6 and the 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 subjected to the influence of injection current, improve the voltage acquisition precision, the sampled voltage of voltage acquisition terminal near the virtual voltage of the tested conduction object of clamping, is beneficial to further improve measuring accuracy substantially when electric current flows through.
The closed-loop type electrical testing folder installation method of this embodiment one is as follows:
1) tested conduction object 11 is put opposite side with a left side good conduction clamp holder 1 and right good conduction clamp holder 2, adjust angle between a left side good conduction clamp holders 1 and the right good conduction clamp holder 2 by hinge 3, make the good conduction double wedge 9,12 of a left side good conduction clamp holder 1 and the right opposite side that very conducts electricity clamp holder 2 contact with tested conduction object 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 good conduction clamp holder 1 rear end, a left side, right good conduction clamp holder 2 rear ends, be inserted in successively again and gather conductive spacer 13, insulation sleeve 5, clamp nut 8, adopt the screwdriver of band 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 the 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 type electrical testing folder as shown in Figure 2, basic composition and installation method are with embodiment one, and difference is: the tested conduction object 14 of its clamping has round section; A left side good conduction clamp holder 1 and right good conduction clamp holder 2 both sides have three respectively with good conduction double wedge 9 and the good conduction double wedge 12 that tested conduction object 14 rotational symmetry distribute.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, 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 some alternative or obvious modification that are equal to without departing from the inventive concept of the premise; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (10)
1. a closed-loop type electrical testing presss from both sides, be used for the tested conduction object of clamping, comprise a left side good conduction clamp holder and right good conduction clamp holder, a described left side is very conducted electricity clamp holder and the electric current of the Testing apparatus of the tested conduction object of test and is injected terminal and voltage acquisition terminal one and be connected, the described right side conduct electricity very that clamp holder and described electric current inject terminal and described voltage acquisition terminal another be connected, it is characterized in that:
It is close with the tested conduction object cross sectional shape of clamping that the opposite side shape of clamp holder and right good conduction clamp holder is very conducted electricity on a described left side, and opposite side is respectively equipped with the good conduction double wedge that at least one contacts with tested conduction object;
The good conduction hinge movable connection structure that the good front end that conducts electricity clamp holder of the clamp holder and the right side is made up of longitudinal hole and the hinge that inserts longitudinal hole very conducts electricity on a described left side;
A described left side very conduct electricity the rear end of clamp holder and right good conduction clamp holder by cross through hole, insert the bolt of cross through hole and the screw fixed connection structure of forming with the adaptive clamp nut of bolt, by adjusting being connected of clamp nut and bolt, a described left side very conducted electricity provides pressure between the good conduction double wedge of clamp holder and the right opposite side that very conducts electricity clamp holder and the tested conduction object.
2. closed-loop type electrical testing folder 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 run through successively from left to right described electric current inject one annular of terminal and voltage acquisition terminal or unci, a described left side very conduct electricity the cross through hole of clamp holder rear end, the described right side very conduct electricity the cross through hole of clamp holder rear end, described electric current inject terminal and voltage acquisition terminal another annular or the clamp nut in unci and its outside.
3. closed-loop type electrical testing folder as claimed in claim 1 or 2 is characterized in that:
Be provided with insulation sleeve between the annular of described bolt, clamp nut and described electric current injection terminal and voltage acquisition terminal or the unci.
4. closed-loop type electrical testing folder 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 type electrical testing folder 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 type electrical testing folder as claimed in claim 5 is characterized in that:
Be provided with insulation sleeve between described bolt, clamp nut and described injection conductive spacer and the collection conductive spacer.
7. closed-loop type electrical testing folder as claimed in claim 6 is characterized in that:
Described bolt is inserted in insulation sleeve from left to right successively, injects conductive spacer, the remainder of described bolt runs through the cross through hole of the cross through hole of good conduction clamp holder rear end, a left side, right good conduction clamp holder rear end more successively, is inserted in successively and gathers conductive spacer, insulation sleeve, clamp nut.
8. closed-loop type electrical testing folder as claimed in claim 7 is characterized in that:
Clamp holder and right good conduction clamp holder are very conducted electricity in a described left side, and the hinge movable connection structure of front end is all made by identical good conductive material one-shot forming.
9. closed-loop type electrical testing folder as claimed in claim 7 is characterized in that:
A described left side is very conducted electricity clamp holder and is made by identical good conductive metallic material one-shot forming with right good conduction clamp holder, and the hinge movable connection structure of its front end is made by non-conductive metal material.
10. the closed-loop type electrical testing presss from both sides as claimed in claim 8 or 9, it is characterized in that:
It is a kind of in trapezoidal double wedge, triangle double wedge and the semicircle double wedge that the good conduction double wedge of clamp holder and right good conduction clamp holder opposite side is very conducted electricity on a described left side.
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 true CN102156215A (en) | 2011-08-17 |
| CN102156215B CN102156215B (en) | 2013-06-26 |
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ID=44437782
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 |
|---|---|
| CN (1) | CN102156215B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499783A (en) * | 2013-09-30 | 2014-01-08 | 贵州航天计量测试技术研究所 | Diode testing device and use method thereof |
| CN104198812A (en) * | 2014-08-12 | 2014-12-10 | 国家电网公司 | Harmonic testing tool |
| 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 |
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|---|---|---|---|---|
| JPS5651672A (en) * | 1979-10-03 | 1981-05-09 | Susumu Yamaguchi | Electric-wire inserter for clamp type ct for ammeter |
| CN2155571Y (en) * | 1992-07-13 | 1994-02-09 | 张力 | Universal testing clamp for low-resistance testers |
| JPH10213598A (en) * | 1997-01-30 | 1998-08-11 | Hioki Ee Corp | Clamp sensor |
| 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 | 北京博电新力电力系统仪器有限公司 | Heavy-current test clamp |
-
2011
- 2011-03-24 CN CN 201110071987 patent/CN102156215B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| CN2155571Y (en) * | 1992-07-13 | 1994-02-09 | 张力 | Universal testing clamp for low-resistance testers |
| JPH10213598A (en) * | 1997-01-30 | 1998-08-11 | Hioki Ee Corp | Clamp sensor |
| 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 | 北京博电新力电力系统仪器有限公司 | Heavy-current test clamp |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499783A (en) * | 2013-09-30 | 2014-01-08 | 贵州航天计量测试技术研究所 | Diode testing device and use method thereof |
| 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 |
| CN104198812A (en) * | 2014-08-12 | 2014-12-10 | 国家电网公司 | Harmonic testing tool |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102156215B (en) | 2013-06-26 |
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| 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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| 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 | ||
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Granted publication date: 20130626 Termination date: 20200324 |