CN104764908A - Four-terminal measuring clamp - Google Patents
Four-terminal measuring clamp Download PDFInfo
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- CN104764908A CN104764908A CN201510130808.6A CN201510130808A CN104764908A CN 104764908 A CN104764908 A CN 104764908A CN 201510130808 A CN201510130808 A CN 201510130808A CN 104764908 A CN104764908 A CN 104764908A
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- fixed body
- fixing body
- terminal measurement
- measurement fixture
- terminal measuring
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Abstract
The invention discloses a four-terminal measuring clamp. The four-terminal measuring clamp is characterized in that the four-terminal measuring clamp comprises a supporting frame, a top plate and a fixing body; the fixing body is composed of a first fixing body and a second fixing body, a cable groove is linearly formed in the lower end face of the first fixing body in the horizontal direction, and a cable groove matched with the first fixing body is linearly formed in one side of the second fixing body in the horizontal direction; the side face of the second fixing body is fixedly connected with one end of the supporting frame, the other end of the supporting frame is fixedly connected to the top plate, and accordingly a reserved space is formed; a lifting gear is arranged in the reserved space. According to the four-terminal measuring clamp, a large-section segmentation block conductor can be compactly and tightly pressed easily, time is saved, dismounting is convenient, hence, the defect that a current electrode chuck of an existing four-terminal measuring clamp cannot well press the large-section segmentation block conductor is overcome, and meanwhile tedious work in the using process is avoided.
Description
Technical field
The present invention relates to a kind of four-terminal measurement fixture.
Background technology
At present, in wires and cables industry field, substantially all adopt double bridge to measure conductor DC resistance.Traditional double bridge apparatus represents model QJ-36, QJ-19, QJ-57; The 2226 type microhmmeters having Harvard of Switzerland Lay to produce of present age computer robotization, SB2230 type DC digital resistance meter that Shanghai Electric Meter Factory is produced etc., and these equipment are all support the use with four-terminal measurement fixture, therefore, four-terminal measurement fixture has become double bridge to measure one of indispensable equipment of conductor DC resistance.The outside of four-terminal measurement fixture is for a pair galvanic electrode, inner side is for a pair potential electrode, no matter be galvanic electrode or potential electrode, when measuring conductor DC resistance, all need its four electrodes and conductor contact good, otherwise, great impact will be produced to measurement result, wherein, the clamping force of four-terminal measurement fixture has considerable influence to copper stranded conductor resistance and aluminum stranded conductor resistance, this is because clamping force can directly change the contact resistance of measured conductor galvanic electrode and the contact resistance of measured conductor potential electrode, thus create very large error.
Instantly four-terminal measurement fixture otherwise be only suitable for being applied to do not need compress small bore conductor on, can not meet the application on the milliken conductor of heavy in section, although can application be met exactly, but because screw rod fastening pressure such as to limit at the reason, cause in fact not only using loaded down with trivial details, take time and effort, and the result measured is also not too satisfactory, has larger error.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to provide a kind of four-terminal measurement fixture, optimizes the structure of existing four-terminal measurement fixture further.
The technical solution adopted in the present invention is, provides a kind of four-terminal measurement fixture, it is characterized in that: comprise bracing frame, upper plate and fixed body, and described fixed body is made up of the first fixed body and the second fixed body; The lower surface of described first fixed body is linearly provided with cable groove in the horizontal direction, and the side of described second fixed body is linearly provided with and the cable groove that the first fixed body matches in the horizontal direction; One end of upper support frame is fixedly connected with in the side of described second fixed body; The other end of bracing frame is fixedly connected with upper plate, forms headspace; In headspace, be provided with hoisting apparatus.
Further, described a kind of four-terminal measurement fixture, is characterized in that the horizontal width of described first fixed body is slightly less than the horizontal width of the second fixed body, forms gap.
Further, described a kind of four-terminal measurement fixture, is characterized in that the width in described gap is 0.2-1.0mm.
Further, described a kind of four-terminal measurement fixture, is characterized in that support frame as described above is made up of at least two support columns, or is made up of at least two pieces of back up pads.
Further, described a kind of four-terminal measurement fixture, is characterized in that described hoisting apparatus is lifting jack.
Further, described a kind of four-terminal measurement fixture, is characterized in that described fixed body is provided with detection part.
Compared with prior art, the invention has the beneficial effects as follows: the present invention utilizes lifting jack strength large and this feature laborsaving, just can heavy in section block conductor be pressed compact closely knit easily, and save time, dismounting also facilitates, thus solve current four-terminal measurement fixture galvanic electrode chuck and can not press this defect of heavy in section milliken conductor well, it also avoid the tedious work existed in the process used simultaneously.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2,3 is the integrated model schematic diagram of existing design;
Wherein: 1, support column; 2.1, the first fixed body; 2.2, the second fixed body; 5, upper plate; 7, lifting jack.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further:
As shown in Figure 1, for the invention provides a kind of four-terminal measurement fixture, mainly comprise at least two support columns 1, upper plate 5 and fixed body 2, wherein, described fixed body 2 is made up of the first fixed body 2.1 and the second fixed body 2.2; The lower surface of the first fixed body 2.1 is linearly provided with cable groove in the horizontal direction, the side of described second fixed body 2.2 is linearly provided with and the cable groove that the first fixed body matches in the horizontal direction, the horizontal width of the first fixed body 2.1 is slightly less than the horizontal width of the second fixed body 2.2, form gap 4, the width in gap 4 is between 0.2-1.0mm; In the side of described second fixed body 2.2, select at least two and disjoint side, be vertically fixedly connected with one end of upper support column 1 in the two ends of this side respectively, described some support columns 1 form bracing frame jointly; The other end of support column 1 is fixedly connected with upper plate 5, forms the main body frame of described four-terminal measurement fixture thus, the headspace 6 in described main body frame, and each side is all opening-wide state; In described headspace 6, be provided with lifting jack 7.
Described support column 1 can be replaced by arranging other bracing or strutting arrangements such as back up pad.
Described lifting jack 7 can be replaced by arranging other suitable hoisting apparatus equally.
Described fixed body 2 is provided with detection part (not shown), and described detection part can test out clamping force, facilitates staff to carry out specifically, timely adjusting with regard to practical application.
As Fig. 2-3, existing four-terminal measurement fixture mainly comprises two kinds, and the first is for the small bore conductor not needing to compress, and it meets production requirement well.But such as, for heavy in section milliken conductor, 1200mm
2milliken conductor, or even 2500mm
2milliken conductor, the first just can not meet production requirement, so there has been the second four-terminal measurement fixture.The second is compared with the first, it can meet heavy in section milliken conductor production requirement, the direct current resistance of heavy in section segmentation copper conductor can be measured, but, in actual applications, not only use loaded down with trivial details, take time and effort, and the result measured is also unsatisfactory, still has larger error, this is because such chuck limit because of screw rod fastening pressure, can not press closely by between the core of heavy in section milliken conductor and core, cause contact resistance to increase, thus produce larger error, especially at mensuration heavy in section 2500mm
2milliken conductor time, its deficiency shows more outstanding, in the process used, for the tightest by being pressed onto between the core of milliken conductor and core to greatest extent, normally with manpower twist motionless till, however, still can find out still there is no close contact between the core of milliken conductor and core significantly, and because of the reason of frequent overexertion, cause the phenomenon often having stripped thread between nut and screw rod, need often to change, in addition, it is time-consuming that it not only tightens effort, and dismounting is also cumbersome.
The present invention utilizes lifting jack strength large and this feature laborsaving, just can heavy in section block conductor be pressed compact closely knit easily, and save time, dismounting also facilitates, thus solve current four-terminal measurement fixture galvanic electrode chuck and can not press this defect of heavy in section milliken conductor well, it also avoid the tedious work that the second fixture is existing in the process used simultaneously.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (6)
1. a four-terminal measurement fixture, is characterized in that: comprise bracing frame, upper plate and fixed body, and described fixed body is made up of the first fixed body and the second fixed body; The lower surface of described first fixed body is linearly provided with cable groove in the horizontal direction, and the side of described second fixed body is linearly provided with and the cable groove that the first fixed body matches in the horizontal direction; One end of upper support frame is fixedly connected with in the side of described second fixed body; The other end of bracing frame is fixedly connected with upper plate, forms headspace; In headspace, be provided with hoisting apparatus.
2. a kind of four-terminal measurement fixture according to claim 1, is characterized in that the horizontal width of described first fixed body is slightly less than the horizontal width of the second fixed body, forms gap.
3. a kind of four-terminal measurement fixture according to claim 2, is characterized in that the width in described gap is 0.2-1.0mm.
4. a kind of four-terminal measurement fixture according to claim 1, is characterized in that support frame as described above is made up of at least two support columns, or is made up of at least two pieces of back up pads.
5. a kind of four-terminal measurement fixture according to claim 1, is characterized in that described hoisting apparatus is lifting jack.
6. a kind of four-terminal measurement fixture according to claim 1, is characterized in that described fixed body is provided with detection part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130808.6A CN104764908A (en) | 2015-03-24 | 2015-03-24 | Four-terminal measuring clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130808.6A CN104764908A (en) | 2015-03-24 | 2015-03-24 | Four-terminal measuring clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104764908A true CN104764908A (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510130808.6A Pending CN104764908A (en) | 2015-03-24 | 2015-03-24 | Four-terminal measuring clamp |
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| CN (1) | CN104764908A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443090A (en) * | 2016-12-01 | 2017-02-22 | 广州供电局有限公司 | Segmental conductor resistance test auxiliary tool and test device |
| CN111487445A (en) * | 2020-05-28 | 2020-08-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Large-section cable conductor direct current resistance test fixture |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772170A (en) * | 1993-09-01 | 1995-03-17 | Kuniharu Kawamura | Testing terminals board for electric apparatus and the like |
| CN201904595U (en) * | 2010-12-17 | 2011-07-20 | 上海市电力公司 | Fixture suitable for large cross-section cables |
| CN202028651U (en) * | 2011-02-23 | 2011-11-09 | 沈阳东管电力科技集团股份有限公司 | Pipe orifice rounding device |
| CN102608428A (en) * | 2012-03-16 | 2012-07-25 | 国家电线电缆质量监督检验中心 | Testing device for direct-current (DC) resistance of cable conductor |
| CN103344798A (en) * | 2013-07-04 | 2013-10-09 | 哈尔滨理工大学 | Clamp and method for measuring direct current resistance of twisted wire core of cable |
| CN203443980U (en) * | 2013-08-22 | 2014-02-19 | 杭州电缆股份有限公司 | DC resistance test bridge clamp of large-cross-section cable conductor |
| CN103831983A (en) * | 2013-12-05 | 2014-06-04 | 天津市远海声学仪器有限公司 | Solid cable sheath repair mold |
| CN204731269U (en) * | 2015-03-24 | 2015-10-28 | 广州南洋电缆有限公司 | A kind of four-terminal measurement fixture |
-
2015
- 2015-03-24 CN CN201510130808.6A patent/CN104764908A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0772170A (en) * | 1993-09-01 | 1995-03-17 | Kuniharu Kawamura | Testing terminals board for electric apparatus and the like |
| CN201904595U (en) * | 2010-12-17 | 2011-07-20 | 上海市电力公司 | Fixture suitable for large cross-section cables |
| CN202028651U (en) * | 2011-02-23 | 2011-11-09 | 沈阳东管电力科技集团股份有限公司 | Pipe orifice rounding device |
| CN102608428A (en) * | 2012-03-16 | 2012-07-25 | 国家电线电缆质量监督检验中心 | Testing device for direct-current (DC) resistance of cable conductor |
| CN103344798A (en) * | 2013-07-04 | 2013-10-09 | 哈尔滨理工大学 | Clamp and method for measuring direct current resistance of twisted wire core of cable |
| CN203443980U (en) * | 2013-08-22 | 2014-02-19 | 杭州电缆股份有限公司 | DC resistance test bridge clamp of large-cross-section cable conductor |
| CN103831983A (en) * | 2013-12-05 | 2014-06-04 | 天津市远海声学仪器有限公司 | Solid cable sheath repair mold |
| CN204731269U (en) * | 2015-03-24 | 2015-10-28 | 广州南洋电缆有限公司 | A kind of four-terminal measurement fixture |
Non-Patent Citations (2)
| Title |
|---|
| 王春江: "《电线电缆手册 第1册》", 31 May 2002, 机械工业出版社 * |
| 陈国华: "《机械机构及应用》", 31 January 2018, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443090A (en) * | 2016-12-01 | 2017-02-22 | 广州供电局有限公司 | Segmental conductor resistance test auxiliary tool and test device |
| CN111487445A (en) * | 2020-05-28 | 2020-08-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Large-section cable conductor direct current resistance test fixture |
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Application publication date: 20150708 |
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| RJ01 | Rejection of invention patent application after publication |