CN208383989U - A kind of cable direct current resistance m easurem ent device - Google Patents
A kind of cable direct current resistance m easurem ent device Download PDFInfo
- Publication number
- CN208383989U CN208383989U CN201820295124.0U CN201820295124U CN208383989U CN 208383989 U CN208383989 U CN 208383989U CN 201820295124 U CN201820295124 U CN 201820295124U CN 208383989 U CN208383989 U CN 208383989U
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- current potential
- cutting mould
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- crush
- potential crush
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Abstract
The cable conductor resistance of each sectional area can be accurately measured the utility model discloses one kind and can guarantee that potential connector contacts good cable direct current resistance m easurem ent device, including pedestal；Two electric current pressure welding mold groups at measuring device both ends are set, and electric current pressure welding mold group includes electric current connector and conductive contact, and electric current pressure welding mold group is slidably connected with pedestal；And two current potential crush-cutting mould groups between electric current pressure welding mold group are set, current potential crush-cutting mould group includes upper current potential crush-cutting mould group and lower current potential crush-cutting mould group, upper current potential crush-cutting mould group includes upper current potential crush-cutting mould group current potential connector, lower current potential crush-cutting mould group includes lower current potential crush-cutting mould group current potential connector, upper current potential crush-cutting mould group can be mobile relative to lower current potential crush-cutting mould group, upper current potential crush-cutting mould group and lower current potential crush-cutting Mo Zu are connected with blade respectively, and blade is electrically connected with upper current potential crush-cutting mould group current potential connector and lower current potential crush-cutting mould group current potential connector respectively.
Description
Technical field
The utility model relates to the technical field of cable direct current resistance m easurem ent more particularly to a kind of cable direct current resistance m easurem ents
Device.
Background technique
For check conductor cross sectional area electric conductivity whether consistent with the specification of manufactory, cable whether qualified, conductor
Whether being broken phenomena such as stranded exists, and needs to measure the D.C. resistance of cable.Electric wire and cable conductor D.C. resistance is wire and cable
One important performance indicator, mostly uses greatly both arms direct-current bridge to be tested at present.
Such as prior art 1(CN102608428A) in disclose a kind of cable conductor DC resistance test device, including
Two are respectively arranged on the end face electric current input fixture at the test device both ends, and the end face electric current input fixture includes a hat shape
Pedestal, the pedestal be equipped with clamping device and electric current gatherer, the electric current gatherer include be set to the pedestal
Several electric currents of bottom import terminal.
This application has the following deficiencies place: " the wire and cable electrical performance test method of first, gb/t3048.4-2007
4th part: conductor DC resistance test " 3.4 articles of regulations: for four-terminal measurement fixture, each electric potential contact and corresponding electric current
Spacing between contact should be not less than 1.5 times of sample section perimeter.However the current potential electricity of the bridge gripper of this application offer
Pole and galvanic electrode are linked together with insulating materials, are fixed on pedestal, can not adjust distance between the two to meet
The needs of different cross section sample measurement.This fixture can only be satisfied with to 1.5 times of section perimeter two electrode spacing ranges it
Interior sample is accurately measured, and conductor cross sectional area is more than that the stability of the sample measurement of this range and accuracy are difficult to protect
Card.Such as: assuming that fixture electric potential contact and electric current contact spacing are 60mm, then the conductor that can accurately measure corresponding to it
Section perimeter is up to 40mm, thus calculates that gained conductor cross sectional area is about 127mm2.Sectional area is measured with this fixture is
Accuracy cannot be guaranteed when the conductor resistance of 127mm2 or more.
Second, when fixture clamps the irregular conductor in some sections, especially such as the twisted molding conductor in big section, this conductor
Section is usually fan-shaped, arc or triangle.It is good to will appear the contact of electric current contact collet when clamping, and electric potential contact collet
The case where poor contact, in addition when electric current contact collet has stepped up, and electric potential contact collet is also difficult to contact with conductor, that
It can not normally measure.After use in this case for a long time, fixture also wears out, deforms, and still results in above-mentioned feelings
Condition.
Utility model content
The utility model is in order to overcome cable direct current resistance m easurem ent device in the prior art that can not accurately measure big section
The problem of long-pending cable conductor resistance and potential connector poor contact, provides a kind of cable direct current resistance m easurem ent device,
The cable conductor resistance of each sectional area can accurately be measured and can guarantee that potential connector contact is good.
To achieve the goals above, the utility model uses following technical scheme:
A kind of cable direct current resistance m easurem ent device, including pedestal；Two electric current pressures at the measuring device both ends are set
Mould group is connect, the electric current pressure welding mold group includes electric current connector and conductive contact, and the electric current pressure welding mold group and the pedestal are sliding
Dynamic connection；And two current potential crush-cutting mould groups between the electric current pressure welding mold group are set, the current potential crush-cutting mould group includes
Upper current potential crush-cutting mould group and lower current potential crush-cutting mould group, the upper current potential crush-cutting mould group include upper current potential crush-cutting mould group current potential connection
Mouthful, the lower current potential crush-cutting mould group includes lower current potential crush-cutting mould group current potential connector, and the upper current potential crush-cutting mould group can be with respect to institute
It is mobile to state lower current potential crush-cutting mould group, the upper current potential crush-cutting mould group and the lower current potential crush-cutting Mo Zu are connected with blade respectively, institute
Blade is stated electrically to connect with the upper current potential crush-cutting mould group current potential connector and the lower current potential crush-cutting mould group current potential connector respectively
It connects.
Survey crew usually measures the resistance for the cable conductor that length is 1m, then two current potential crush-cutting moulds of measuring device
The distance between group current potential connector can be fixed as 1m, and the conductive contact of measuring device both ends electric current pressure welding mold group is designed as
Can on pedestal free-moving structure, and pedestal is suitably lengthened, thus can satisfy " each electric potential contact with it is corresponding
Spacing between electric current contact is not less than 1.5 times of sample section perimeter ".Conductive contact and current potential connector are designed as independence
The structure for clamping and unclamping not only can guarantee that conductive contact and current potential connector are in close contact with cable conductor simultaneously, also in this way
It can solve the problems, such as clamp because collet abrasion, deformation is used for a long time.The insulating layer of blade cut cable surface and application
Lower pressure contacts electric potential contact well with cable conductor, avoids fixture and clamps the irregular conductor or fixture in some sections
Electric potential contact collet caused by abrasion, deformation is difficult to the problem of well contacting with conductor.
As a kind of optimal technical scheme of the utility model, the conductive contact includes several gold by being distributed outside interior cause
Belong to and visits ring.
As a kind of optimal technical scheme of the utility model, it includes several metal probes, the gold that the metal, which visits ring,
Belong to probe to be uniformly distributed circumferentially, can guarantee that each electric current contact uniformly gathers in cable conductor end face.
As a kind of optimal technical scheme of the utility model, the upper current potential crush-cutting mould group is connected with balance pressure bottom
Plate, the upper current potential crush-cutting mould group are connect with the upper balance pressure bottom plate by upper balance compression spring, the lower current potential pressure
It cuts mould group and is connected with lower balance pressure bottom plate, the lower current potential crush-cutting mould group and the lower balance pressure bottom plate pass through lower balance pressure
The connection of power spring, the lower balance pressure bottom plate are fixedly connected with the base.
As a kind of optimal technical scheme of the utility model, the upper balance pressure bottom plate is connected with first hydraulic cylinder,
Anti- displacement bar is equipped between the upper balance pressure bottom plate and the first hydraulic cylinder.
As a kind of optimal technical scheme of the utility model, the pedestal is equipped with slider frame, the electric current pressure welding mold
Group lower end is equipped with sliding block, and the sliding block is slidably connected with the slider frame, and the electric current pressure welding mold group is connected with second hydraulic cylinder.
As a kind of optimal technical scheme of the utility model, several cables are equipped between described two current potential crush-cutting mould groups
Placement plate, the cable places plate are connected separately with lower balance pressure bottom plate, and the cable places plate connects and the lower balance pressure
Power bottom plate is connected by lower balance compression spring, and the lower balance pressure bottom plate is fixedly connected with the base.
Cable is placed in each cable places plate and two lower current potential crush-cutting mould groups when operation, first hydraulic cylinder difference
It pushes so that two upper current potential crush-cutting mould groups compress cable, the blade in upper current potential crush-cutting mould group and lower current potential crush-cutting mould group passes through
Lower pressure cut cable insulation and with cable conductor is good contacts, second hydraulic cylinder pushes the electric current pressure welding mold at both ends respectively
Group connects the electric current connector in two electric current pressure welding mold groups by equipment and generates so that conductive contact heads into cable conductor both ends
Electric current, the potential difference of detected current value and two current potential crush-cutting mould groups, is calculated cable conductor resistance.
The utility model beneficial effect achieved is compared with prior art:
By the conductive contact of measuring device both ends electric current pressure welding mold group be designed as can on pedestal free-moving structure, with
Meet the needs of different cross section sample measurement, guarantees the stability and accuracy of the big sectional area sample measurement of conductor；
Conductive contact and current potential connector are designed as the independent structure for clamping and unclamping, guarantee that conductive contact and current potential connect
Interface is in close contact with cable conductor simultaneously, and solves the problems, such as to clamp because collet abrasion, deformation is used for a long time；
The insulating layer and the lower pressure of application of blade cut cable surface contact electric potential contact well with cable conductor, keep away
Exempted from fixture clamp electric potential contact collet caused by the irregular conductor in some sections or clamp wear, deformation be difficult to it is good with conductor
Accessible problem；
Using end face current input method test cable conductor DC resistance, allow test electric current by current feed directly from end
Surface current input fixture enters the end face of conductor, makes electric current even into conductor, really guarantees that test electric current flows to the maximum extent
Every monofilament is crossed, reduces the contact resistance of conductor and fixture, avoids the test data of conductor DC resistance untrue, it is not only stable
Cable product quality, also reduces cable cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of conductive contact.
It is marked in figure as follows: hydraulic cylinder leg 1；First hydraulic cylinder 2；Hydraulic cylinder plate 3；Anti- displacement bar 4；Upper balance pressure bullet
Spring 5；Upper current potential crush-cutting mould group 6；Lower current potential crush-cutting mould group 7；Lower balance compression spring 8；Fixed link 9；Lower balance pressure bottom plate 10；
Conductive contact 11；Electric current pressure welding mold group 12；Second hydraulic cylinder 13；Slider frame 14；Sliding block 15；Pedestal 16；Electric current connector 17；On
Current potential crush-cutting mould group current potential connector 18；Lower current potential crush-cutting mould group current potential connector 19；Upper balance pressure bottom plate 20；Cable is placed
Plate 21.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1, a kind of cable direct current resistance m easurem ent device, including the electric current pressure welding mold group 12, two of pedestal 16, two
Current potential crush-cutting mould group and two cable places plates 21.Two of them electric current pressure welding mold group is arranged in 16 both ends of pedestal, two current potentials
Crush-cutting mould group is arranged between two electric current pressure welding mold groups 12, and two settings of cable places plate 21 are used in two current potential crush-cutting mould groups
To bear cable.Cable places plate 21 is connected separately with lower balance pressure bottom plate 10, and cable places plate 21 connects and lower balance pressure
Bottom plate 10 is connected by lower balance compression spring 8, and lower balance pressure bottom plate 10 is fixedly connected with pedestal 16.
Electric current pressure welding mold group 12 includes electric current connector 17 and conductive contact 11.If as shown in Fig. 2, conductive contact 11 includes
Dry to visit ring by the metal being distributed outside interior cause, it includes several metal probes that metal, which visits ring, and metal probe is uniformly distributed circumferentially.
Slider frame 14 is fixedly installed on pedestal 16,12 lower end of electric current pressure welding mold group is fixedly connected with sliding block 15, sliding block 15
It is slidably connected with slider frame 14, electric current pressure welding mold group 12 is connected with second hydraulic cylinder 13.
Current potential crush-cutting mould group includes upper current potential crush-cutting mould group 6 and lower current potential crush-cutting mould group 7, and upper current potential crush-cutting mould group 6 includes
Upper current potential crush-cutting mould group current potential connector 18, lower current potential crush-cutting mould group 7 include lower current potential crush-cutting mould group current potential connector 19.
Upper current potential crush-cutting mould group 6 is connected with balance pressure bottom plate 20, upper current potential crush-cutting mould group 6 and upper balance pressure bottom plate
20 are connected by upper balance compression spring 5, and lower current potential crush-cutting mould group 7 is connected with lower balance pressure bottom plate 10, lower current potential crush-cutting mould
Group 7 is connect with lower balance pressure bottom plate 10 by lower balance compression spring 8, lower balance pressure bottom plate 10 pass through a fixed link 9 and
Pedestal 16 is fixedly connected.
Upper balance pressure bottom plate 20 is connected with first hydraulic cylinder 2, and first hydraulic cylinder 2 includes hydraulic cylinder plate 3, upper balance pressure
Anti- displacement bar 4 is equipped between bottom plate 20 and first hydraulic cylinder 2, first hydraulic cylinder 2 is connected with hydraulic cylinder leg 1.
Upper current potential crush-cutting mould group 6 and lower current potential crush-cutting mould group 7 respectively include insulating base, and upper current potential crush-cutting mould group 6 is under
Current potential crush-cutting mould group 7 is connected separately with blade, blade respectively with upper current potential crush-cutting mould group current potential connector 18 and lower current potential crush-cutting
Mould group current potential connector 19 is electrically connected.
Cable is placed in each cable places plate 21 and two lower current potential crush-cutting mould groups 7 when operation, first hydraulic cylinder 2
It is pushed respectively so that two upper current potential crush-cutting mould groups 6 compress cables, in upper current potential crush-cutting mould group 6 and lower current potential crush-cutting mould group 7
Blade by lower pressure cut cable insulation and with cable conductor is good contacts, second hydraulic cylinder 13 pushes both ends respectively
Electric current pressure welding mold group 12 makes conductive contact 11 head into cable conductor both ends, is connected in two electric current pressure welding mold groups 12 by equipment
Electric current connector 17 simultaneously generates electric current, and the potential difference of detected current value and two current potential crush-cutting mould groups is calculated cable and leads
Bulk resistor.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of cable direct current resistance m easurem ent device, which is characterized in that including
Pedestal；
Two electric current pressure welding mold groups at the measuring device both ends are set, the electric current pressure welding mold group include electric current connector and
Conductive contact, the electric current pressure welding mold group are slidably connected with the pedestal；
And two current potential crush-cutting mould groups between the electric current pressure welding mold group are set, the current potential crush-cutting mould group includes powering on
Position crush-cutting mould group and lower current potential crush-cutting mould group, the upper current potential crush-cutting mould group include upper current potential crush-cutting mould group current potential connector, institute
Stating lower current potential crush-cutting mould group includes lower current potential crush-cutting mould group current potential connector, and the upper current potential crush-cutting mould group can the relatively described lower electricity
Position crush-cutting mould group is mobile, and the upper current potential crush-cutting mould group and the lower current potential crush-cutting Mo Zu are connected with blade, the blade respectively
It is electrically connected respectively with the upper current potential crush-cutting mould group current potential connector and the lower current potential crush-cutting mould group current potential connector.
2. a kind of cable direct current resistance m easurem ent device according to claim 1, which is characterized in that the conductive contact includes
Several metals by being distributed outside interior cause visit ring.
3. a kind of cable direct current resistance m easurem ent device according to claim 2, which is characterized in that the metal visits ring and includes
Several metal probes, the metal probe are uniformly distributed circumferentially.
4. a kind of cable direct current resistance m easurem ent device according to claim 1, which is characterized in that the upper current potential crush-cutting
Mould group is connected with balance pressure bottom plate, and the upper current potential crush-cutting mould group and the upper balance pressure bottom plate pass through upper balance pressure
Spring connection, the lower current potential crush-cutting mould group are connected with lower balance pressure bottom plate, the lower current potential crush-cutting mould group and described lower put down
The pressure bottom plate that weighs is connected by lower balance compression spring, and the lower balance pressure bottom plate is fixedly connected with the base.
5. a kind of cable direct current resistance m easurem ent device according to claim 4, which is characterized in that the upper balance pressure bottom
Plate is connected with first hydraulic cylinder, and anti-displacement bar is equipped between the upper balance pressure bottom plate and the first hydraulic cylinder.
6. a kind of cable direct current resistance m easurem ent device described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described
Pedestal is equipped with slider frame, and the electric current pressure welding mold group lower end is equipped with sliding block, and the sliding block is slidably connected with the slider frame, institute
It states electric current pressure welding mold group and is connected with second hydraulic cylinder.
7. a kind of cable direct current resistance m easurem ent device described according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that described
Several cable places plates are equipped between two current potential crush-cutting mould groups, the cable places plate is connected separately with lower balance pressure bottom
Plate, the cable places plate are even connect with the lower balance pressure bottom plate by lower balance compression spring, the lower balance pressure
Bottom plate is fixedly connected with the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295124.0U CN208383989U (en) | 2018-03-02 | 2018-03-02 | A kind of cable direct current resistance m easurem ent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295124.0U CN208383989U (en) | 2018-03-02 | 2018-03-02 | A kind of cable direct current resistance m easurem ent device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208383989U true CN208383989U (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820295124.0U Expired - Fee Related CN208383989U (en) | 2018-03-02 | 2018-03-02 | A kind of cable direct current resistance m easurem ent device |
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| CN (1) | CN208383989U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470926A (en) * | 2018-03-02 | 2019-03-15 | 国网浙江省电力公司嘉兴供电公司 | A kind of cable direct current resistance m easurem ent device and its application method |
| CN110320409A (en) * | 2019-06-26 | 2019-10-11 | 国网冀北电力有限公司唐山供电公司 | A kind of big section XLPE cable conductor AC resistance measurement method |
| CN110504638A (en) * | 2019-06-26 | 2019-11-26 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of transmission line of electricity potential transfer device |
| CN113311244A (en) * | 2021-07-02 | 2021-08-27 | 上海国缆检测股份有限公司 | Conductor direct current resistance testing method |
-
2018
- 2018-03-02 CN CN201820295124.0U patent/CN208383989U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470926A (en) * | 2018-03-02 | 2019-03-15 | 国网浙江省电力公司嘉兴供电公司 | A kind of cable direct current resistance m easurem ent device and its application method |
| CN110320409A (en) * | 2019-06-26 | 2019-10-11 | 国网冀北电力有限公司唐山供电公司 | A kind of big section XLPE cable conductor AC resistance measurement method |
| CN110504638A (en) * | 2019-06-26 | 2019-11-26 | 国网浙江省电力有限公司嘉兴供电公司 | A kind of transmission line of electricity potential transfer device |
| CN113311244A (en) * | 2021-07-02 | 2021-08-27 | 上海国缆检测股份有限公司 | Conductor direct current resistance testing method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20200302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |