CN204177834U - A kind of test clip of circuit resistance tester - Google Patents
A kind of test clip of circuit resistance tester Download PDFInfo
- Publication number
- CN204177834U CN204177834U CN201420646425.5U CN201420646425U CN204177834U CN 204177834 U CN204177834 U CN 204177834U CN 201420646425 U CN201420646425 U CN 201420646425U CN 204177834 U CN204177834 U CN 204177834U
- Authority
- CN
- China
- Prior art keywords
- jig arm
- cushion block
- mume flower
- flower contact
- test clip
- 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.)
- Expired - Fee Related
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- Measuring Leads Or Probes (AREA)
Abstract
The utility model discloses a kind of test clip of circuit resistance tester, comprise two jig arm be rotationally connected, two jig arm match and clamp the Mume flower contact of AC high voltage vacuum breaker, the pinching end of described jig arm is provided with the copper cushion block for contacting with described Mume flower contact, and the surface that copper cushion block contacts with Mume flower contact is cambered surface.Test clip of the present utility model, by arranging copper cushion block in two jig arm, two copper cushion blocks make the opening of two jig arm pinching ends strengthen, when test clip is clamped on the copper sheet on Mume flower contact, test clip touches less than extension spring, thus extension spring can be avoided to generate heat because big current passes through in the process of test burn red, extension spring can not burn out, and Mume flower contact also would not be caused to damage.
Description
Technical field
The utility model belongs to loop resistance technical field of measurement and test, and specifically, the utility model relates to a kind of test clip of circuit resistance tester.
Background technology
AC high voltage vacuum breaker as major control in electric system and proterctive equipment, reliability is high, cut-off capacity large, be applicable to the series of advantages such as frequent operation, be obtained in all trades and professions and every field and applied more and more widely.So vacuum circuit breaker just starts in enormous quantities, the production of scale, this just requires in the inspection work of product export, produces and damages, reduce the loss and increase work efficiency when prevent some Interventions Requested from checking to some parts of product.
When carrying out primary circuit resistance test to AC high voltage vacuum breaker, two test line end test clip of circuit resistance tester are typical clamp, when test loop resistance, require the copper on-chip testing of clip on two Mume flower contacts up and down of primary circuit.Due to the special shape of Mume flower contact, the extension spring on Mume flower contact easily encountered by clip, and measuring current very large (being greater than 160A) during loop resistance test, the extension spring causing encountering clip generate heat because big current passes through in the process of test burn red, extension spring burns out, Mume flower contact damages, and this just causes reprocessing of product and economic loss.
Utility model content
The utility model provides a kind of test clip of circuit resistance tester, and object avoids causing Mume flower contact to damage when loop-around test.
To achieve these goals, the technical scheme that the utility model is taked is: a kind of test clip of circuit resistance tester, comprise two jig arm be rotationally connected, two jig arm match and clamp the Mume flower contact of AC high voltage vacuum breaker, the pinching end of described jig arm is provided with the copper cushion block for contacting with described Mume flower contact, and the surface that copper cushion block contacts with Mume flower contact is cambered surface; Described copper cushion block embeds in the groove of the pinching end of described jig arm, and stretches out outside groove, and the end edge that copper cushion block inserts in groove is fillet.
Described copper cushion block is fixed by screws in described jig arm.
Two described jig arm are rotationally connected in middle position.
Test clip of the present utility model, by arranging copper cushion block in two jig arm, two copper cushion blocks make the opening of two jig arm pinching ends strengthen, when test clip is clamped on the copper sheet on Mume flower contact, test clip touches less than extension spring, thus extension spring can be avoided to generate heat because big current passes through in the process of test burn red, extension spring can not burn out, and Mume flower contact also would not be caused to damage.
Accompanying drawing explanation
This instructions comprises the following drawings, shown content respectively:
Fig. 1 is the structural representation of the utility model test clip;
Fig. 2 is A-A cut-open view in Fig. 1;
Be labeled as in figure:
1, jig arm; 2, copper cushion block.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, be described in further detail embodiment of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contribute to its enforcement.
As shown in Figure 1 to Figure 2, the test clip of a kind of circuit resistance tester of the utility model, comprise two jig arm be rotationally connected, 1, two jig arm 1 match clamping AC high voltage vacuum breaker Mume flower contact.In order to strengthen the opening of the pinching end of two jig arm 1, the copper cushion block 2 for contacting with Mume flower contact is provided with at the pinching end of each jig arm 1, when clamped condition, copper cushion block 2 is between jig arm 1 and Mume flower contact, thus the opening of the pinching end of two jig arm 1 is increased, such test clip just touches less than the extension spring on Mume flower contact, thus also just can avoid the damage of Mume flower contact.
As shown in Figure 1, the surface that copper cushion block 2 contacts with Mume flower contact is cambered surface, thus can strengthen the surface of contact with Mume flower contact, reduces contact resistance.
As preferably, as shown in Figure 1, the pinching end of each jig arm 1 has groove, and groove forms opening at the medial surface of pinching end, and copper cushion block 2 is in the groove of the pinching end embedding jig arm 1, and stretches out outside groove, to strengthen the opening between two jig arm 1.As shown in Figure 2, the shape of copper cushion block 2 is rectangle, and the width of copper cushion block 2 is just in time to embed in the pinching end groove of jig arm 1, and the one side contacted with groove inner wall face makes plane.In addition, the chamfering of the end edge in the insertion groove of copper cushion block 2 is fillet, arranges rounded corner, is convenient to copper cushion block 2 and inserts installation in groove.
As shown in Figure 2, make a call to a counter sunk mounting holes in the center of each copper cushion block 2, then open a mounting hole in the pinching end position of each jig arm 1 according to the mounting hole on copper cushion block 2; Copper cushion block 2 is arranged on respectively with sunk screw in the groove of pinching end of jig arm 1 again, fixes and just can carry out testing of loop resistance.Carry out the test of loop resistance with the test clip after improvement, just can avoid the damage of Mume flower contact.
Below by reference to the accompanying drawings the utility model is exemplarily described.Obviously, the utility model specific implementation is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technical scheme is carried out; Or without improvement, above-mentioned design of the present utility model and technical scheme directly applied to other occasion, all within protection domain of the present utility model.
Claims (3)
1. the test clip of a circuit resistance tester, comprise two jig arm be rotationally connected, two jig arm match and clamp the Mume flower contact of AC high voltage vacuum breaker, it is characterized in that: the pinching end of described jig arm is provided with the copper cushion block for contacting with described Mume flower contact, and the surface that copper cushion block contacts with Mume flower contact is cambered surface; Described copper cushion block embeds in the groove of the pinching end of described jig arm, and stretches out outside groove, and the end edge that copper cushion block inserts in groove is fillet.
2. the test clip of circuit resistance tester according to claim 1, is characterized in that: described copper cushion block is fixed by screws in described jig arm.
3. the test clip of circuit resistance tester according to claim 1 and 2, is characterized in that: two described jig arm are rotationally connected in middle position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646425.5U CN204177834U (en) | 2014-10-31 | 2014-10-31 | A kind of test clip of circuit resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646425.5U CN204177834U (en) | 2014-10-31 | 2014-10-31 | A kind of test clip of circuit resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177834U true CN204177834U (en) | 2015-02-25 |
Family
ID=52566639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420646425.5U Expired - Fee Related CN204177834U (en) | 2014-10-31 | 2014-10-31 | A kind of test clip of circuit resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204177834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624369A (en) * | 2020-05-28 | 2020-09-04 | 国网河南省电力公司郑州供电公司 | Insulation wire clamp for measuring loop resistance of vacuum circuit breaker |
-
2014
- 2014-10-31 CN CN201420646425.5U patent/CN204177834U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624369A (en) * | 2020-05-28 | 2020-09-04 | 国网河南省电力公司郑州供电公司 | Insulation wire clamp for measuring loop resistance of vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20191031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |