CN202453472U - Trolley-type switch loop resistance measuring caliper - Google Patents
Trolley-type switch loop resistance measuring caliper Download PDFInfo
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- CN202453472U CN202453472U CN2012200829603U CN201220082960U CN202453472U CN 202453472 U CN202453472 U CN 202453472U CN 2012200829603 U CN2012200829603 U CN 2012200829603U CN 201220082960 U CN201220082960 U CN 201220082960U CN 202453472 U CN202453472 U CN 202453472U
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- caliper
- measuring
- type switch
- loop resistance
- switch loop
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- 238000005259 measurement Methods 0.000 claims description 26
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 14
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 17
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a trolley-type switch loop resistance measuring caliper which has a good use effect and is safe and reliable. The trolley-type switch loop resistance measuring caliper comprises a caliper body, wherein the caliper body comprises two legs which are mutually hinged, one leg of the caliper body is provided with a tight-expansion bolt in threaded connection, the free end of the tight-expansion bolt is leaned against on the inner side surface of the other leg of the caliper body, the front end of each leg of the caliper body is respectively and fixedly provided with a caliper head in a connection manner, each caliper head is provided with an auxiliary contact, a concave pit is excavated at the inner side of the other leg of the caliper body, the position of the concave pit corresponds to that of the tight-expansion bolt, the free end of the tight-expansion bolt is leaned against in the concave pit, and the cross section of the front end of the caliper head is of a concave and outwards-bulged semi-arc shape. When the trolley-type switch loop resistance measuring caliper is used for measuring the switch loop resistance, the measuring caliper can be put at the inner part of a trolley-type switch contact, the expansion extent of the two legs of the measuring caliper can be adjusted through the tight-expansion bolt, the caliper heads of the measuring caliper can be tightly leaned against the inner part of the switch contact, a switch resistance measuring instrument can be connected onto the auxiliary contact of the measuring caliper, and thus the measuring can be conducted.
Description
Technical field
The utility model relates to a kind of electric equipment, relates in particular to a kind of trolley type switch loop resistance measurement pincers.
Background technology
The existing measuring pliers that is used for the test of switch loop resistance is a spring clip type; And the moving contact front end of trolley type switch has a circle fingertip to be fixed by fixture and spring at present; Be used for the contact of dynamic/static contact, have only when car switch is pushed into the switch cubicle run location, to clamp dynamic/static contact conducting galvanic circle.When pulling out switch, when using the spring clip type measuring pliers to measure loop resistance,, fingertip causes test error because hindering testing clamp to clamp conductive arm, and influence is to the differentiation of switch performance.Specifically deficiency is as follows:
(1), accuracy of measurement is not high.The trolley type switch has only contact to expose, and can only measure the column type contact when measuring loop resistance, and the measuring pliers and the equipment of existing surveying instrument do not match, and measuring pliers contacts not tight with current-carrying part, very easily cause measuring error, even test failure occurs.
(2), cause the damage of measured equipment easily.At present the measuring current of switch circuit resistance tester is approximately 100A, and test pincers and the switch of existing tester do not match, and contacts not tightly with major loop, very easily causes in the test process switch contact to discharge and burns out.Mostly test clip is zigzag, directly contacts with fingertip spring and fingertip, causes spring and fingertip to damage easily.
(3), the measurement difficulty is big, Measuring Time is long, efficiency of measurement is low.When measuring, the used clip of measuring equipment is difficult to clamp contact, even also very easily come off on the folder, has brought trouble to measurement, has prolonged test period, has reduced efficiency of measurement.
Summary of the invention
The purpose of the utility model provides good, the safe and reliable trolley type switch loop resistance measurement pincers of a kind of result of use.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of trolley type switch loop resistance measurement pincers comprise caliper, and caliper includes two mutually hinged pin, it is characterized in that: the tight expansion bolt that has been threaded on one of them pin of caliper, and the free end that tightly expands bolt withstands on the medial surface of caliper another one pin; Each pin front end of caliper all is fixedly connected with binding clip, is equipped with auxiliary contact on each binding clip.
According to described trolley type switch loop resistance measurement pincers, it is characterized in that: the inboard excavation of said caliper another one pin has pit, and the position of pit is corresponding with said tight expansion bolt, and the free end that tightly expands bolt withstands in the pit.
According to described trolley type switch loop resistance measurement pincers, it is characterized in that: the cross sectional shape of said binding clip front end is to have depression and half outwards outstanding arc.
According to described trolley type switch loop resistance measurement pincers, it is characterized in that: said binding clip front end has groove, and groove is positioned at the lateral surface of binding clip.
According to described trolley type switch loop resistance measurement pincers, it is characterized in that: the outside of said caliper and binding clip junction is set with insulating sleeve.
When using the utility model measuring switch loop resistance; It is inner that measuring pliers is put into the trolley type switch contact; Regulate the amplitude of opening of measuring pliers bipod through regulating tight expansion bolt; Make the binding clip of measuring pliers abut in the inside of switch contact closely, again the switch resistance measuring instrument is connected on the auxiliary contact of measuring pliers, can measure.Through test result analysis is learnt, use test result that the utility model obtains all normally and more near actual value, accuracy of measurement improves; Surface damage does not appear in the equipment that adopts this measuring pliers to measure, and equipment protection is intact; This measuring pliers is easy to connect, once just can successful connection, and surveying work can be accomplished smoothly, and Measuring Time shortens, and efficiency of measurement is significantly improved than existing equipment.Therefore the result of use of the utility model is good, and safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the user mode reference diagram of the utility model.
In the accompanying drawing:
1, caliper; 2, tightly expand bolt; 3, insulating sleeve; 4, auxiliary contact; 5, binding clip; 6, pit; 7, groove; 8, switch resistance measuring instrument; 9, switch contact.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:
A kind of trolley type switch loop resistance measurement pincers; Like Fig. 1, shown in Figure 2, comprise caliper 1, caliper 1 includes two mutually hinged pin; The tight expansion bolt 2 that has been threaded on caliper 1 one of them pin, the free end that tightly expands bolt 2 withstands on the medial surface of caliper 1 another one pin; Caliper 1 each pin front end all is fixedly connected with binding clip 5, is equipped with auxiliary contact 4 on each binding clip 5.In the present embodiment, the inboard of said caliper 1 another one pin excavation has pit 6, and the position of pit 6 is corresponding with said tight expansion bolt 2, and the free end that tightly expands bolt 2 withstands in the pit 6.The cross sectional shape of said binding clip 5 front ends is to have depression and half outwards outstanding arc.Said binding clip 5 front ends have groove 7, and groove 7 is positioned at the lateral surface of binding clip 5.Said caliper 1 is set with insulating sleeve 3 with the outside of binding clip 5 junctions.
Embodiment recited above describes the preferred implementation of the utility model; Be not that design and scope to the utility model limits; Under the prerequisite that does not break away from the utility model design concept, common engineering technical personnel make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model; The technology contents that the utility model is asked for protection all is documented in claims.
Prior art and equipment can not satisfy the requirement of accurate measuring switch loop resistance and protection test equipment; The utility model adopts the scheme of internal expanding type, promptly is made into the measuring pliers that expands outwardly from switch contact inside as compasses, and measuring pliers gos deep into switch contact inside; Make binding clip at inner closely contact with switch contact (referring to the Fig. 3) of switch contact through regulating tight expansion bolt; Measuring pliers can the regulated at will subtended angle size, to satisfy the needs of different bore switch contacts, improved the accuracy of measurement of contact resistance; Can also protect equipment under test, and light simple.Measuring pliers struts from the inside of contact gradually, can effectively contact, and enough dynamics are arranged again.Measuring pliers outwards opens from the lining in the inside of contact, closely contacts with fingertip, and when the spiral shell handle is constantly tightened, the contact pressure of measuring pliers and fingertip is also bigger, and measuring pliers does not contact with the fingertip spring, can not cause damage to spring.
The utility model is mainly used in the measurement of switch loop resistance; By caliper, binding clip, tightly expand bolt, auxiliary contact is formed; Caliper adopts high-insulativity, high-intensity composite insulating material to make, the similar compasses of shape and structure, and the amplitude of opening of caliper bipod can be regulated through the tight bolt that expands.Caliper one pin middle part is porose, and tight expansion bolt is housed in the hole; Binding clip adopts the copper with high conduction performance to do; Cross sectional shape is half arc that has depression, and the design that has half arc that caves in had both increased the contact area of measuring pliers and contact, had reduced contact resistance; Make binding clip block switch contact again; Difficult drop-off, binding clip is fixedly connected through rivet with caliper, and the insulating sleeve suit is adopted in the junction; Tight expansion bolt is wear-resisting bolt, closely contacts with switch contact through tightening to strut binding clip and make it; Auxiliary contact and binding clip join, and are used for convenient external measuring circuit.
For the accuracy of measurement aspect, in order to verify the result of use of the utility model, respectively 35kV, 10kV trolley type switch to be tested, test findings is following:
| Test number (TN) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 35kV trolley type switch | 75μΩ | 68μΩ | 54μΩ | 52μΩ | 76μΩ | 83μΩ | 79μΩ | 87μΩ |
| 10kV trolley type switch | 32μΩ | 27μΩ | 26μΩ | 19μΩ | 31μΩ | 28μΩ | 36μΩ | 35μΩ |
The result learns through analytical test, because the binding clip front end adopts half arc, has increased the contact area of binding clip and switch contact, and binding clip is closely contacted with switch contact, and test result is all normally and more near actual value, the accuracy of measurement raising.
Surface damage does not appear in the equipment that adopts this measuring pliers to measure yet, and equipment protection is intact, and can have cut after adopting device measuring switch contact of the prior art, has the situation that spring damages that tightens.
Because this measuring pliers is easy to connect, once just can successful connection, make surveying work be able to smooth completion, Measuring Time shortens, and efficiency of measurement obviously improves than existing equipment.And when using original technique equipment, measuring pliers is difficult for connecting, and also has the slippage situation in the process of the test, brings very big inconvenience to test.
Claims (5)
1. a trolley type switch loop resistance measurement clamps; Comprise caliper (1); Caliper (1) includes two mutually hinged pin; It is characterized in that: the tight expansion bolt (2) that has been threaded on one of them pin of caliper (1), the free end that tightly expands bolt (2) withstands on the medial surface of caliper (1) another one pin; Each pin front end of caliper (1) all is fixedly connected with binding clip (5), is equipped with auxiliary contact (4) on each binding clip (5).
2. trolley type switch loop resistance measurement pincers according to claim 1; It is characterized in that: the inboard excavation of said caliper (1) another one pin has pit (6); The position of pit (6) is corresponding with said tight expansion bolt (2), and the free end that tightly expands bolt (2) withstands in the pit (6).
3. trolley type switch loop resistance measurement pincers according to claim 2 is characterized in that: the cross sectional shape of said binding clip (5) front end is to have depression and half outwards outstanding arc.
4. trolley type switch loop resistance measurement pincers according to claim 3, it is characterized in that: said binding clip (5) front end has groove (7), and groove (7) is positioned at the lateral surface of binding clip (5).
5. according to each described trolley type switch loop resistance measurement pincers among the claim 1-4, it is characterized in that: said caliper (1) is set with insulating sleeve (3) with the outside of binding clip (5) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200829603U CN202453472U (en) | 2012-03-07 | 2012-03-07 | Trolley-type switch loop resistance measuring caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200829603U CN202453472U (en) | 2012-03-07 | 2012-03-07 | Trolley-type switch loop resistance measuring caliper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453472U true CN202453472U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200829603U Expired - Fee Related CN202453472U (en) | 2012-03-07 | 2012-03-07 | Trolley-type switch loop resistance measuring caliper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590742A (en) * | 2012-03-07 | 2012-07-18 | 山东电力集团公司枣庄供电公司 | Loop resistance measuring pliers for trolley type switch |
-
2012
- 2012-03-07 CN CN2012200829603U patent/CN202453472U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590742A (en) * | 2012-03-07 | 2012-07-18 | 山东电力集团公司枣庄供电公司 | Loop resistance measuring pliers for trolley type switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130813 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 277100 ZAOZHUANG, SHANDONG PROVINCE TO: 277000 ZAOZHUANG, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130813 Address after: 277000 the Yellow River Road, Xuecheng District, Shandong, No. 999, No. Patentee after: Tai'an Power Supply Co., Ltd. of Shandong Electric Power Corporation Patentee after: State Grid Corporation of China Address before: 277100 No. 60 Guangming Middle Road, Shizhong District, Shandong, Zaozhuang Patentee before: Tai'an Power Supply Co., Ltd. of Shandong Electric Power Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20140307 |