CN216082855U - Test wire connecting clamp of spherical contact body - Google Patents
Test wire connecting clamp of spherical contact body Download PDFInfo
- Publication number
- CN216082855U CN216082855U CN202122390319.8U CN202122390319U CN216082855U CN 216082855 U CN216082855 U CN 216082855U CN 202122390319 U CN202122390319 U CN 202122390319U CN 216082855 U CN216082855 U CN 216082855U
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- clamp
- contact body
- main unit
- ring main
- spherical contact
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
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Abstract
The utility model discloses a test wire connecting clamp of a spherical contact body, which comprises a test lead, a metal spherical contact body, an upper clamp support with insulation property, a lower clamp support, a torsion spring and a compression spring, wherein the upper clamp support is provided with a plurality of contact holes; one end of the upper clamp bracket is rotationally connected with the lower clamp bracket; the other end of the clamp upper bracket is a cylindrical free end and can be matched with a ring main unit outlet sleeve; the metal spherical contact body is sleeved on the free end of the upper bracket of the clamp and is electrically connected with the test lead; the compression spring is used for forcing the metal spherical contact body to move outwards and contact with the ring main unit outlet sleeve; the torsion spring is arranged between the upper clamp bracket and the lower clamp bracket and used for clamping and preventing the ring main unit outgoing line sleeve from falling off. The connecting clamp ensures that the metal spherical contact body is in good contact with a contact body on a ring main unit wire outlet sleeve; the ring main unit wire outlet sleeve is prevented from falling off from the clamp bracket during installation and use; the accuracy of the test result and the working efficiency of the tester are improved.
Description
Technical Field
The utility model relates to the technical field of high-voltage wiring assemblies, in particular to a test wire connecting clamp of a spherical contact body.
Background
The number of manufacturers for producing the 10kV outdoor distribution network ring main unit is large, the manufacturing process levels are different, in order to inspect the quality of equipment and prevent the ring main unit from breaking down in the long-distance transportation process, relevant test items such as a ring main unit switch and bus withstand voltage test, an insulation resistance test, a loop resistance test, a microcomputer protection test and the like need to be carried out before an equipment operation and maintenance management unit is installed and used. Meanwhile, after the operation of the electric equipment, preventive tests are required to be periodically carried out according to the requirements of state maintenance work of the electric equipment.
In the process of carrying out the test work, a tester needs to install a test connecting wire clamp on the ring main unit outgoing line sleeve and connect a test instrument with the ring main unit. In contrast, the conventional test wire clamp adopts a metal serrated contact body, and the serrated contact body is easy to cause damage to the surface of the sleeve after being contacted with the surface of the sleeve. If the surface of the sleeve is not smooth or has a dent, after the access cable is put into operation, the continuous high voltage influence firstly causes the sleeve to be not smooth or partial discharge is generated near the dent, then a creepage channel appears at the partial discharge part, and finally the cable forms a ground fault along the surface of the cabinet body. And the service life of the ring main unit is shortened.
When the sawtooth-shaped contact body is contacted with the conductor part, the sawtooth tip is easy to generate the point discharge phenomenon in the test process. The discharge is often accompanied by abnormal sound, when the abnormal sound is rejected and strong, a tester needs to reinstall the clamp, and the installation and the test are repeated until the abnormal sound does not occur or the uniform abnormal sound occurs, and then data is recorded as a basis for judging whether the ring main unit can normally operate after installation and operation. The working efficiency of the testing personnel is reduced. Therefore, a wire clamp needs to be developed, which does not affect the test and can not cause pressure injury or scratch on the surface of the sleeve when being installed and used.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a test wire connecting clamp of a spherical contact body, so that abnormal sound generated by a metal serrated contact body wire clamp in the using process is eliminated, the surface of a wire outlet sleeve is prevented from being scratched, hidden dangers brought to a 10kV distribution network outdoor ring main unit are avoided, and the accuracy of a test result and the working efficiency of a tester are improved.
Therefore, the utility model provides a test wire connecting clamp of a spherical contact body, which comprises a test lead, the metal spherical contact body, an upper clamp support with insulation property, a lower clamp support, a torsion spring and a compression spring, wherein the upper clamp support is provided with a plurality of elastic pieces; the upper clamp bracket is L-shaped, and one end of the upper clamp bracket is rotatably connected with the lower clamp bracket; the other end of the clamp upper bracket is a cylindrical free end and can be matched with a ring main unit outlet sleeve; the metal spherical contact body is sleeved on the free end of the clamp upper bracket and is electrically connected with the test lead; the compression spring is also sleeved on the free end of the upper bracket of the clamp and used for forcing the metal spherical contact body to move outwards and contact with the ring main unit outlet sleeve; the torsion spring is arranged between the clamp upper support and the clamp lower support and used for clamping and preventing the ring main unit outlet sleeve from falling off.
Further, the fixture upper bracket is provided with a fixing clamping groove for fixing the test lead.
Furthermore, the free end of the lower clamp support is provided with an anti-slip layer.
Further, the diameter of the free end of the upper bracket of the clamp is smaller than the minimum aperture of the threaded hole of the outgoing line sleeve of the ring main unit; and the spherical diameter of the metal spherical contact body is larger than the maximum diameter of the threaded hole of the ring main unit outlet sleeve.
According to the test wire connecting clamp of the spherical contact body, the metal spherical contact body capable of sliding and the elastic compression spring are arranged, so that the metal spherical contact body is ensured to be in good contact with the contact body on the ring main unit wire outlet sleeve; the torsion spring drives the free end of the upper bracket of the clamp to move towards one side of the lower bracket of the clamp and clamps the ring main unit outgoing line sleeve, so that the ring main unit outgoing line sleeve is prevented from falling off from the clamp bracket during installation and use; the accuracy of the test result and the working efficiency of the tester are improved.
In the preferred scheme of the utility model, the metal spherical contact body is prevented from falling off from the upper bracket of the clamp by arranging the fixing clamping groove; the anti-slip layer is arranged at the free end of the lower clamp bracket, so that the ring main unit wire outlet sleeve is further prevented from falling off from the clamp bracket; the diameter of the free end of the upper bracket of the clamp and the spherical diameter of the metal spherical contact body are controlled to adapt to the outgoing line sleeves of the ring main units with different specifications.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of a test wire connection jig for a ball contact according to the present invention;
fig. 2 is a schematic structural diagram of the ring main unit outgoing line sleeve according to the present invention;
fig. 3 is a schematic diagram of the fitting of the test wire connecting clamp of the spherical contact body and the ring main unit outlet sleeve.
Description of the reference numerals
1. A clamp is arranged on the bracket; 2. a clamp lower support; 3. a torsion spring; 4. a compression spring; 5. a metal spherical contact body; 6. fixing the clamping groove; 7. an anti-slip layer; 8. testing a lead; 20. looped netowrk cabinet goes out wire sleeve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the test wire connection jig for the ball contact according to the present invention includes a test wire 8, a metal ball contact 5, a compression spring 4, and a jig holder. The fixture support plays the effect of supporting and installing fixed metal spherical contact 5, and metal spherical contact 5 is connected with 10kV outdoor distribution network looped netowrk cabinet outlet sleeve 20 conductor part under compression spring 4's effect, and each item electric test is realized to cooperation test wire 8.
The clamp bracket comprises an upper clamp bracket 1, a lower clamp bracket 2 and a torsion spring 3; the clamp upper bracket 1 is L-shaped, one end of the clamp upper bracket 1 is rotatably connected with the clamp lower bracket 2 and is elastically connected with the clamp lower bracket through a torsion spring 3, and the free end of the clamp upper bracket 1 is forced to move towards one side of the clamp lower bracket 2. The upper clamp bracket 1, the lower clamp bracket 2, the torsion spring 3 and the compression spring 4 are made of insulating materials, and the metal spherical contact body 5 is made of metal copper with good conductivity.
Specifically, as shown in fig. 1, the free end of the upper bracket 1 of the clamp, which is far away from the base, is cylindrical, and the diameter of the free end is smaller than the diameter of the threaded hole of the contact body of the ring main unit outgoing line sleeve 20, and when the clamp is installed and used, the upper bracket 1 of the clamp can extend into the threaded hole; the metal spherical contact body 5 is provided with a through hole, the free end of the clamp upper bracket 1 can penetrate through the metal spherical contact body 5, and the spherical diameter of the metal spherical contact body is larger than the diameter of a threaded hole of the contact body of the ring main unit outgoing line sleeve 20.
The test lead 8 is welded with the metal spherical contact 5, the middle part of the test lead 8 is connected with the fixed clamping groove 6 on the upper bracket 1 of the clamp, and the metal spherical contact 5 is prevented from falling off from the upper bracket 1 of the clamp; the compression spring 4 is sleeved on the clamp upper bracket 1, one end of the compression spring 4 is fixed, the other end of the compression spring 4 is used for supporting the metal spherical contact body 5, when the test wire clamp is installed and used, the elastic force generated by the compression spring 4 presses the metal spherical contact body 5, and the metal spherical contact body 5 is ensured to be in good contact with the contact body on the ring main unit wire outlet sleeve 20;
as shown in fig. 3, the free end of the lower clamp bracket 2 is provided with an anti-slip layer 7, which cooperates with the torsion spring 3 to move the free end of the upper clamp bracket 1 to one side of the lower clamp bracket 2 and clamp the ring main unit outlet sleeve 20, so as to prevent the ring main unit outlet sleeve 20 from falling off from the clamp bracket during installation and use.
The utility model provides a test wire connecting clamp of a spherical contact body, which is suitable for multi-specification ring main unit outgoing line sleeves produced by different manufacturers, and the sizes of all parts of the clamp need to be designed according to the size of the ring main unit outgoing line sleeve, and the requirements are as follows: c < bmin: the diameter of the cylindrical part of the upper bracket 1 of the clamp is smaller than the minimum aperture of the threaded hole of the ring main unit outlet sleeve 20 produced by different manufacturers; d > bmax: the spherical diameter of the metal spherical contact body 5 is larger than the maximum diameter of the threaded hole of the ring main unit outlet sleeve 20 produced by different manufacturers.
The length of the compression spring 4 is observed whether the metal spherical contact body 5 is in contact with the threaded hole of the ring main unit outlet sleeve 20 or not according to the fact that the clamp is installed in place, and if the clamp is in good contact with the threaded hole of the ring main unit outlet sleeve 20, the length of the upper bracket 1 of the clamp extending into the threaded hole is smaller than or equal to the minimum depth a of the threaded hole of the ring main unit outlet sleeve 20 at the momentmin。
As shown in fig. 2, a: the depth of a threaded hole of a ring main unit outlet sleeve; a ismin: the minimum depth of the threaded hole of the ring main unit outlet sleeve; b: the diameter of a threaded hole of a ring main unit outlet sleeve; bmax: ring main unit outlet sleeve threaded holeA maximum pore diameter; bmin: the minimum aperture of the threaded hole of the outgoing line sleeve of the ring main unit; c: the diameter of the cylindrical part of the upper bracket of the clamp; d: the metal ball contacts the ball diameter.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The test wire connecting clamp of the spherical contact body is characterized by comprising a test lead (8), a metal spherical contact body (5), an upper clamp support (1), a lower clamp support (2), a torsion spring (3) and a compression spring (4), wherein the upper clamp support, the lower clamp support, the torsion spring and the compression spring have insulating characteristics;
the clamp upper support (1) is L-shaped, and one end of the clamp upper support (1) is rotatably connected with the clamp lower support (2); the other end of the clamp upper bracket (1) is a cylindrical free end and can be matched with a ring main unit outlet sleeve (20); the metal spherical contact body (5) is sleeved on the free end of the clamp upper bracket (1) and is electrically connected with the test lead (8); the compression spring (4) is also sleeved on the free end of the clamp upper bracket (1) and used for forcing the metal spherical contact body (5) to move outwards and contact with the ring main unit outlet sleeve (20);
the torsion spring (3) is arranged between the clamp upper support (1) and the clamp lower support (2) and used for clamping and preventing the looped network cabinet outlet sleeve (20) from falling off.
2. Test wire connection clamp for ball contacts according to claim 1, characterized in that a fixing slot (6) for fixing the test wire (8) is provided on the clamp upper bracket (1).
3. Test wire connection clamp for ball contacts according to claim 1, characterized in that the free end of the clamp lower bracket (2) is provided with an anti-slip layer (7).
4. The test wire connecting clamp of the spherical contact body as claimed in claim 1, wherein the diameter of the free end of the upper bracket (1) of the clamp is smaller than the minimum aperture of the threaded hole of the ring main unit outgoing line sleeve (20); and the spherical diameter of the metal spherical contact body (5) is larger than the maximum diameter of the threaded hole of the ring main unit outgoing line sleeve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122390319.8U CN216082855U (en) | 2021-09-29 | 2021-09-29 | Test wire connecting clamp of spherical contact body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122390319.8U CN216082855U (en) | 2021-09-29 | 2021-09-29 | Test wire connecting clamp of spherical contact body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082855U true CN216082855U (en) | 2022-03-18 |
Family
ID=80637158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122390319.8U Active CN216082855U (en) | 2021-09-29 | 2021-09-29 | Test wire connecting clamp of spherical contact body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216082855U (en) |
-
2021
- 2021-09-29 CN CN202122390319.8U patent/CN216082855U/en active Active
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