CN207181464U - A kind of electrical equipment high-voltage large current tests special fixture - Google Patents
A kind of electrical equipment high-voltage large current tests special fixture Download PDFInfo
- Publication number
- CN207181464U CN207181464U CN201721230411.5U CN201721230411U CN207181464U CN 207181464 U CN207181464 U CN 207181464U CN 201721230411 U CN201721230411 U CN 201721230411U CN 207181464 U CN207181464 U CN 207181464U
- Authority
- CN
- China
- Prior art keywords
- clamping piece
- electrical equipment
- large current
- special fixture
- lower clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measuring Leads Or Probes (AREA)
Abstract
Special fixture is tested the utility model discloses a kind of electrical equipment high-voltage large current, and upper clamping piece and lower clamping piece surface are provided with bearing, and guide rod is hinged with by movable axis on bearing；It is connected between guide rod and chuck body with spring；Guide rod and spring are placed in guide cylinder；Pass through hinge between upper and lower two chuck bodies, constant force spring is installed on bearing pin, chuck body handle end is provided with experiment line interface, test interface is connected with upper clamping piece and lower clamping piece respectively by wire, the bare terminal end of chuck body is provided with neck, the neck is engaged with buckle, and can be plugged into inside neck, and extension spring is provided between the buckle.This special fixture uses sectional design, with adaptive principle, the contact area of raising fixture and tested device, and the contact resistance of reduction fixture and tested device contact point.
Description
Technical field
The utility model belongs to electric equipment test device field, more particularly to a kind of electrical equipment high-voltage large current examination
Test special fixture.
Background technology
Existing high potential test for electric equipment fixture is mainly the crocodile clip of tooth form seaming, is had the following disadvantages：
（1）During the Leakage Current experiment of high voltage measuring tested device, test wire and test clamp need hanging arrangement, experiment
Folder contact between tested device contacts for point, and test clamp easily comes off in experimentation, causes testing equipment and subject to set
Standby impact failure.
（2）When the milliohm or micro-phm level electric resistance of Super-Current Measurement tested device, the contact resistance of test clamp and test item
It is very big on result of the test degree of accuracy influence, increase the operation difficulty of testing crew.
（3）Existing crocodile clip function is single, and versatility has limitation.
Utility model content
The purpose of this utility model is to provide a kind of electrical equipment high-voltage large current experiment special fixture, this exclusive clamps
Tool uses sectional design, with adaptive principle, improves the contact area of fixture and tested device, reduces fixture and set with subject
The contact resistance of standby contact point, meanwhile, in the pretightning force that the locking device of fixture tail end design provides, can by tested device by
Retained part secure lock clamps.For the diameter of different model wire, different-diameter semicircle orifice is devised on unilateral folder,
Meeting the wire of various models can firmly clamp.
In order to realize above-mentioned technical characteristic, what the purpose of this utility model was realized in：A kind of high electricity of electrical equipment
Press cranking test special fixture, upper clamping piece and lower clamping piece surface are provided with bearing, and guide rod is hinged with by movable axis on bearing；
It is connected between guide rod and chuck body with spring；Guide rod and spring are placed in guide cylinder；The guide cylinder bottom is machined with
Intercommunicating pore, guide cylinder and spring are fixed in chuck body, and chuck body surface is cased with insulation sleeve, upper and lower two chuck bodies
Between by hinge, constant force spring is installed on bearing pin, chuck body handle end is provided with experiment line interface, test interface
It is connected respectively with upper clamping piece and lower clamping piece by wire, the bare terminal end of chuck body is provided with neck, and the neck matches with buckle
Close, and can be plugged into inside neck, extension spring is installed between the buckle.
The guide rod includes cylindrical bar, and boss, the cavity of the boss and guide cylinder are connected with the end of cylindrical bar
Composition is slidably matched.
The buckle is boss structure, and is engaged with neck, and under tension spring tension effect, buckle adds chuck body
Tightly, upper clamping piece and lower clamping piece are pinned and.
Wire close to upper clamping piece and lower clamping piece is wound up as helix.
One termination of the wire is embedded in upper clamping piece and lower clamping piece, and soldering and sealing is fixed, another termination and test wire
Interface connects, and experiment line interface is female thread structure, and matched test lead termination is external thread structure.
The upper clamping piece and lower clamping piece have multigroup, and the semicircle orifice of different radii is provided with every group of lower clamping piece.
The axis of the guide rod and spring is overlapped, and guide rod can be axially moved in guide cylinder.
The upper clamping piece and lower clamping piece share three groups.
The upper clamping piece and lower clamping piece are oppositely arranged, and its attachment structure between chuck body is identical.
The utility model has the advantages that：
1st, the grasp opening arc distance of fixture is big, and the size limitation for tested device bite is smaller.
2nd, locking member is designed with fixture, is more uniformly distributed tested device stress, clamping is more firm.
3rd, upper clamping piece, lower clamping piece are segment design, and every section has independent self-adaptive regulating, upper clamping piece, lower clamping piece
Contact with tested device and contacted for face, contact resistance is small, and will not form indenture, scratch etc. on tested device surface, will not
Destroy the silver coating on tested device surface.
4th, the lower clamping piece of several semicircle orifices combination, goes for different line footpath wires, contact area is big, contact resistance
It is small, at utmost maintain the integrity of wire.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is A partial views in the utility model Fig. 1.
Fig. 3 is the utility model lower clamping piece and chuck body connected structure schematic diagram.
In figure：Test line interface 1, constant force spring 2, wire 3, insulation sleeve 4, chuck body 5, buckle 6, neck 7, upper clamping piece
8th, lower clamping piece 9, extension spring 10, bearing 11, movable axis 12, spring 13, guide rod 14, guide cylinder 15, intercommunicating pore 16, bearing pin 17.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figures 1 to 3, a kind of electrical equipment high-voltage large current experiment special fixture, upper clamping piece 8 and the table of lower clamping piece 9
Face is provided with bearing 11, is coaxially connected by movable axis 12 between guide rod 14 and bearing 11, between guide rod 14 and chuck body 5
It is connected with spring 13, guide rod 14 is convex cylindrical structure, and guide rod 14, spring 13 are placed in guide cylinder 15, the bottom of guide cylinder 15
Portion is provided with intercommunicating pore 16, and guide cylinder 15 and spring 13 are fixed in chuck body 5, and the surface of chuck body 5 is cased with insulation sleeve 5, on
Lower two chuck bodies 5 are coaxially connected by bearing pin 17, and constant force spring 2 is provided with bearing pin 17, and the handle end of chuck body 5 is set
There is experiment line interface 1, test interface 1 is connected with upper clamping piece 8, lower clamping piece 9 respectively by wire 3, and the bare terminal end of chuck body 5 is set
There is neck 7, extension spring 10 is connected with the buckle 6 at both ends, and buckle 6 may be inserted into neck 7, by the pulling force of extension spring 10, in pinning
Folder 8, lower clamping piece 9.
As shown in figure 1, buckle 6 is boss structure, and after upper clamping piece 8, lower clamping piece 9 clamp tested device, the both ends of extension spring 10
Buckle 6 insert neck 7, under the pulling force effect of extension spring 10, guide groove of the buckle 6 along neck 7 enter neck 7 bottom, so as to
Lock the retaining part of tested device.
As shown in figure 1, helix is wound up as close to upper clamping piece 8, the wire 3 of the side of lower clamping piece 9, on avoiding
When folder 8, lower clamping piece 9 stretch, the surface insulation of wire 3 is damaged.
As shown in figure 1, a termination of wire 3 is embedded in upper clamping piece 8, in lower clamping piece 9, soldering and sealing is fixed, another termination
It is connected with experiment line interface 1, experiment line interface 1 is female thread structure, and matched test lead termination is external thread structure,
Screw thread coordinates and screwed between the two, ensures that contact is close, firm.
As shown in figure 1, lower clamping piece 9 there are 3 groups, the semicircle orifice of different radii is provided with every group of lower clamping piece 9, can increase and connect
Contacting surface is accumulated, and reduces contact resistance, and suitable for the tested device of different line footpaths, while clamp also more firm.Upper clamping piece 8, lower folder
The contact surface of part 9 and tested device does silver-plated process.
As shown in Fig. 2 the axis of guide rod 14 and spring 13 overlaps, guide rod 14 can axially be transported in guide cylinder 15
Dynamic, the bottom of guide cylinder 15 is provided with intercommunicating pore 16, it is ensured that is oriented to tube inner chamber and is connected with extraneous air, plays concora crush effect.
As shown in Fig. 2 upper clamping piece 8 is fixed on bearing 11, bearing 11 is connected with guide rod 14 by movable axis 12, activity
Axle 12 can allow upper clamping piece 8 to have certain mobility.After upper clamping piece 8, lower clamping piece 9 clamp tested device, if subject
Equipment clip position is wedge shape, and upper clamping piece 8, lower clamping piece 9 can adjust claming angle, adaptive tested device by movable axis 12
The shape of clip position, so as to increase contact area, reduce contact resistance.
Embodiment 2：
Using the test method of electrical equipment high-voltage large current experiment special fixture described in any one, it includes following
Step：
Step1：The handle of chuck body 5 is firmly pulled open, upper clamping piece 8 and lower clamping piece 9 is clamped on copper bar surface；
Step2：Weak vibrations fixture, make upper clamping piece 8 and lower clamping piece 9 adaptively adjustment clamping direction and angle, ensure folder
Tool fully contacts with copper bar surface；
Step3：Buckle 6 is inserted into locking fixture in neck 7, test fixture fixation, connect experiment with test lead
Mouth 1 and test apparatus connect, you can carry out DC break down voltage experiment.
The course of work and operation principle of the present utility model：
This example be a kind of electrical equipment high-voltage large current test special fixture, the high-voltage test of large electric equipment or
During person's cranking test, the bite of tested device is often cuboid or cylinder wire.For ease of illustration it is a kind of electric
Equipment high-voltage large current tests the operation principle of special fixture, now with the pressure-resistant examination of 800MW hydraulic generator stator direct currents
Test and illustrate.The pressure point of stator winding DC break down voltage experiment is located at generator neutral point position, and bite is cuboid copper
Row, the position about 5 meters of height from the ground, if test fixture comes off during experiment, test apparatus is changed into unloaded from load transients,
Counterattack voltage is easily damaged testing equipment.A kind of electrical equipment high-voltage large current experiment special fixture is in use, firmly pull open
The handle of chuck body 5, upper clamping piece 8, lower clamping piece 9 is set to clamp on copper bar surface, weak vibrations fixture, upper clamping piece 8, lower clamping piece 9 are certainly
Adjustment clamping direction and angle are adapted to, ensures that fixture fully contacts with copper bar surface, buckle 6 is inserted into locking fixture in neck 7,
Test fixture fixation, test interface 1 and test apparatus are connected with test lead, you can carry out DC break down voltage examination
Test.
Above-described embodiment is used for illustrating the utility model, rather than the utility model is limited, in this practicality
New spirit and any modifications and changes in scope of the claims, made to the utility model, both fall within this reality
With new protection domain.
Claims (9)
1. a kind of electrical equipment high-voltage large current tests special fixture, it is characterised in that：Upper clamping piece（8）And lower clamping piece（9）Table
Face is respectively equipped with bearing（11）, bearing（11）On pass through movable axis（12）It is hinged with guide rod（14）；Guide rod（14）With fixture
Body（5）Between use spring（13）It is connected；Guide rod（14）And spring（13）It is placed in guide cylinder（15）It is interior；The guide cylinder（15）
Bottom is machined with intercommunicating pore（16）, guide cylinder（15）And spring（13）It is fixed on chuck body（5）On, chuck body（5）Surface
It is cased with insulation sleeve（4）, upper and lower two chuck bodies（5）Between pass through bearing pin（17）It is be hinged, in bearing pin（17）On constant pressure is installed
Spring（2）, chuck body（5）Handle end is provided with experiment line interface（1）, test interface（1）Pass through wire（3）Respectively with upper clamping piece
（8）And lower clamping piece（9）It is connected, chuck body（5）Bare terminal end be provided with neck（7）, the neck（7）With buckle（6）It is engaged,
And it can be plugged into neck（7）Inside, the buckle（6）Between extension spring is installed（10）.
A kind of 2. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Guide rod（14）Including cylindrical bar, boss, the boss and guide cylinder are connected with the end of cylindrical bar（15）Cavity form
It is slidably matched.
A kind of 3. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Buckle（6）For boss structure, and and neck（7）It is engaged, in extension spring（10）Under pulling force effect, buckle（6）By chuck body（5）
Step up, and pin upper clamping piece（8）And lower clamping piece（9）.
A kind of 4. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is close
Upper clamping piece（8）And lower clamping piece（9）Wire（3）It is wound up as helix.
A kind of 5. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Wire（3）A termination be embedded in upper clamping piece（8）And lower clamping piece（9）Interior, soldering and sealing is fixed, another termination and experiment line interface
（1）Connection, test line interface（1）For female thread structure, matched test lead termination is external thread structure.
A kind of 6. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Upper clamping piece（8）And lower clamping piece（9）There is multigroup, every group of lower clamping piece（9）On be provided with the semicircle orifice of different radii.
A kind of 7. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Guide rod（14）And spring（13）Axis overlap, guide rod（14）Can be in guide cylinder（15）Interior axial movement.
A kind of 8. electrical equipment high-voltage large current experiment special fixture according to claim 1 or 6, it is characterised in that：
The upper clamping piece（8）And lower clamping piece（9）Share three groups.
A kind of 9. electrical equipment high-voltage large current experiment special fixture according to claim 1, it is characterised in that：It is described
Upper clamping piece（8）And lower clamping piece（9）It is oppositely arranged, itself and chuck body（5）Between attachment structure it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230411.5U CN207181464U (en) | 2017-09-25 | 2017-09-25 | A kind of electrical equipment high-voltage large current tests special fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721230411.5U CN207181464U (en) | 2017-09-25 | 2017-09-25 | A kind of electrical equipment high-voltage large current tests special fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207181464U true CN207181464U (en) | 2018-04-03 |
Family
ID=61749116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721230411.5U Active CN207181464U (en) | 2017-09-25 | 2017-09-25 | A kind of electrical equipment high-voltage large current tests special fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207181464U (en) |
-
2017
- 2017-09-25 CN CN201721230411.5U patent/CN207181464U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204156135U (en) | Hv cable termination earthing clamp | |
| CN204651519U (en) | For the auxiliary connection folder of binding post wiring test | |
| ATE554522T1 (en) | DEVICE FOR A JOIN BETWEEN TWO HIGH VOLTAGE ELECTRICAL CABLES OF DIFFERENT DIAMETERS | |
| CN201266686Y (en) | Metal guide connecting device capable of preventing static discharging for electrician | |
| CN203732572U (en) | Telescopic high-altitude wire clamp | |
| CN208062664U (en) | A kind of stranded repair of ultra-high-tension power transmission line smoothes out with the fingers line apparatus | |
| CN207181464U (en) | A kind of electrical equipment high-voltage large current tests special fixture | |
| CN204536371U (en) | A kind of high bar testing wire clamp | |
| CN204376366U (en) | Cable joint sealing and connecting device | |
| CN109473794B (en) | Safety low-voltage converging clamp tool | |
| CN108919164A (en) | A kind of Portable mutual inductor check bar and its application method | |
| CN103018499B (en) | Leakage current testing auxiliary device | |
| CN205176073U (en) | Arrester live test drainage pincers | |
| CN205229191U (en) | Insulator spindle with test electrography connector | |
| CN107688106A (en) | A kind of electrical equipment high-voltage large current experiment special fixture and method | |
| CN208173834U (en) | Portable grounding wire | |
| CN206038728U (en) | Power -frequency withstand voltage testing transformer insulator spindle | |
| CN206557251U (en) | A kind of 10kV switching on/off handcarts loop resistance tests special joint | |
| CN203324322U (en) | Electrical device high voltage test clamp | |
| CN214849090U (en) | Ground protection device for electric power construction | |
| CN204536383U (en) | Manual inflatable high-potting shield assembly | |
| CN204302325U (en) | For the High-Voltage Insulation standard trolley of leakage conductor high direct voltage test | |
| CN207098086U (en) | A kind of wire clamp for preventing wire dropout | |
| CN207380226U (en) | Current transformer pressure test secondary terminals Special short instrument | |
| CN209102757U (en) | A kind of telescopic high-altitude wiring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |