CN220419385U - Circuit breaker loop resistance test joint - Google Patents
Circuit breaker loop resistance test joint Download PDFInfo
- Publication number
- CN220419385U CN220419385U CN202321720829.XU CN202321720829U CN220419385U CN 220419385 U CN220419385 U CN 220419385U CN 202321720829 U CN202321720829 U CN 202321720829U CN 220419385 U CN220419385 U CN 220419385U
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- conductive piece
- circuit breaker
- contact
- conductive
- loop resistance
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 210000003128 head Anatomy 0.000 description 7
- 241000270722 Crocodylidae Species 0.000 description 5
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 5
- 241000270728 Alligator Species 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a circuit breaker loop resistance test connector, which comprises a first conductive piece, a second conductive piece and a control base; the first conductive piece and the second conductive piece are respectively arranged on the control base in a sliding way, and the sliding directions of the first conductive piece and the second conductive piece are close to each other or far away from each other; the first conductive piece and the second conductive piece are respectively provided with a test interface; the control base is used for simultaneously controlling the sliding of the first conductive piece and the second conductive piece, and the first conductive piece and the second conductive piece are used for simultaneously abutting and connecting with the contact of the circuit breaker. The utility model adopts a sliding structure, and the first conductive piece and the second conductive piece are controlled to slide on the control base and then are in abutting connection with the breaker contact, so that stable conductive connection is realized by means of the pressing force between the first conductive piece and the second conductive piece and the breaker contact, the contact area can be effectively increased, the utility model is applicable to the breaker contacts with different sizes, the wiring is simple, the use is safe, and the overall practicability is high.
Description
Technical Field
The utility model relates to the technical field of electronics, in particular to a circuit breaker loop resistance test connector.
Background
The quincuncial contacts of the handcart type circuit breaker can have the phenomena of oxidation of contact surfaces, poor contact fastening and the like after long-time use, thereby leading to the increase of contact resistance and being extremely likely to generate serious accidents. Therefore, it is necessary to measure the contact resistance of the power equipment during the first commissioning and daily annual inspection.
The loop resistance test current wire connector of the traditional handcart type vacuum circuit breaker mainly comprises two types:
one is an alligator wire clamp, which mainly provides clamping force for the wire clamp through a spring on the alligator wire clamp, so that the alligator wire clamp and a plum blossom contact of a handcart type vacuum circuit breaker are kept together. However, when the crocodile clip is used, the spring is easily deformed when a large current flows beside the fixed spring, so that the contacts are loose and easily heated, and even an electric equipment accident occurs; the crocodile wire clamp belongs to point contact, and the contact surface is small, so that test data are larger; the crocodile wire clamp teeth are sharp, so that the plum blossom contact is easy to scratch, and the contact area between the crocodile wire clamp teeth and the plum blossom contact during testing is reduced;
the other is a circular ring type copper connector, which is designed according to the shape of a plum blossom contact of a handcart type circuit breaker, and the connector is fixed in the plum blossom contact; however, the connector cannot adapt to loop resistance tests of other types of switch type plum blossom contacts, and the sizes of the circular ring type copper connectors are selected according to the type of the handcart type breaker required by the test on the test day and are in one-to-one correspondence; and when the copper connector is switched among three phases of the handcart-type circuit breaker, a spring of the plum blossom contact of the handcart-type circuit breaker is required to be opened, and the plum blossom contact on the handcart-type circuit breaker provides clamping force, so that the operation is inconvenient.
Therefore, the existing loop resistance test connector is not strong in practicability, is not safe enough, is not accurate in measurement, is not flexible to use, and is inconvenient to operate.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the circuit breaker loop resistance test connector is safe in use, wide in application range, simple in operation and high in overall practicability.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a circuit breaker loop resistance test connector comprises a first conductive piece, a second conductive piece and a control base;
the first conductive piece and the second conductive piece are respectively arranged on the control base in a sliding way, and the sliding directions of the first conductive piece and the second conductive piece are mutually close to or mutually far away from each other;
the first conductive piece and the second conductive piece are respectively provided with a test interface;
the control base is used for simultaneously controlling the first conductive piece and the second conductive piece to slide, and the first conductive piece and the second conductive piece are used for simultaneously abutting and connecting with the breaker contact.
Further, the control base comprises a front tooth screw rod, a back tooth screw rod and a rotary handle;
the first conductive piece and the second conductive piece are respectively and rotatably arranged on the orthodontic part and the anti-dental part of the positive and negative dental screw rod, and the rotary handle is arranged at the end part of the positive and negative dental screw rod.
Further, the first conductive member and the second conductive member each include a contact and a slider;
the contact head is arranged on the sliding block, a threaded through hole for the first conductive piece to pass through is formed in the sliding block, and the test interface is positioned on the sliding block;
the contact of the first conductive member corresponds to the contact of the second conductive member.
Further, the contact head is provided with an abutting part with a shape matched with that of the breaker contact.
Further, the rotary handle comprises a star-shaped hand wheel;
the two star-shaped handwheels are respectively arranged at the two ends of the positive and negative tooth screw rod.
Further, the device also comprises a connecting wire;
one end of the connecting wire is provided with a connector matched with the test interface;
the other end of the connecting wire is provided with a main wire head and a branch wire head.
Further, the middle part of the rod body of the positive and negative tooth screw rod is provided with a thread-free part for separating the positive tooth part and the negative tooth part.
The utility model has the beneficial effects that: the utility model provides a circuit breaker return circuit resistance test connects adopts slidingtype structure, and through controlling first electrically conductive piece and second electrically conductive piece and sliding on control base, and then contradict with the circuit breaker contact and be connected, rely on first electrically conductive piece and second electrically conductive piece each with circuit breaker contact between the clamp force realize steadily electrically conductive connection, not only can effectively increase area of contact, can also be applicable to not the circuit breaker contact of equidimension, connected mode is simple, safe in utilization, and whole practicality is high.
Drawings
FIG. 1 is a perspective view of a circuit breaker loop resistance test connector in accordance with the present utility model;
FIG. 2 is a schematic diagram of a circuit breaker loop resistance test connector and circuit breaker contact connection in accordance with the present utility model;
fig. 3 is a schematic structural diagram of a connection wire of a circuit breaker loop resistance testing connector according to an embodiment of the present utility model.
Description of the reference numerals:
1. a first conductive member; 2. a second conductive member; 3. a control base; 4. testing an interface; 5. a breaker contact; 6. a contact; 7. a slide block; 8. connecting wires; 9. a main wire head; 10. a branch line head; 11. an abutting portion;
31. a positive and negative tooth screw rod; 32. rotating the handle; 33. and a non-threaded portion.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The loop resistance test of some existing circuit breakers uses alligator clips as current line connectors. The crocodile clip can provide a small contact surface, so that inaccurate using results of measuring loop resistance test are easily caused; and the clamping teeth are sharp, which easily scratch the surface of the breaker contact 5. Some loop resistance tests use circular ring type copper connectors, however, the connectors cannot adapt to loop resistance tests of other types of switch type plum blossom contacts, and the sizes of the circular ring type copper connectors are selected according to the type of the handcart type breaker required to be tested on the test day and are in one-to-one correspondence; and is relatively inconvenient to operate.
Based on this, the utility model proposes a circuit breaker loop resistance test connector, as shown in fig. 1 to 3, comprising a first conductive member 1, a second conductive member 2 and a control base 3; the first conductive piece 1 and the second conductive piece 2 are respectively arranged on the control base 3 in a sliding way, and the sliding directions of the first conductive piece 1 and the second conductive piece 2 are close to each other or far away from each other; the first conductive piece 1 and the second conductive piece 2 are respectively provided with a test interface 4; the control base 3 is used for simultaneously controlling the sliding of the first conductive piece 1 and the second conductive piece 2, and the first conductive piece 1 and the second conductive piece 2 are used for simultaneously abutting and connecting with the breaker contact 5.
It can be understood that, for the breaker contact 5, taking a tulip contact as an example, the first conductive member 1 and the second conductive member 2 slide and are far away from each other, and the surfaces of the surfaces far away from each other are all abutted against the inner side of the breaker contact 5, so that a pressing force is generated between the breaker contact 5 and the first conductive member 1, the second conductive member 2 and the breaker contact 5, so that an equilibrium state is achieved between the first conductive member 1, the second conductive member 2 and the breaker contact 5, and stable connection is maintained. Whereas for larger sized breaker contacts 5 the spacing between the first conductive element 1 and the second conductive element 2 is increased.
In some embodiments, the control base 3 comprises a positive and negative feed screw 31 and a rotary handle 32; the first conductive member 1 and the second conductive member 2 are respectively rotatably disposed on the orthodontic portion and the orthodontic portion of the orthodontic screw 31, and the rotary handle 32 is disposed at the end of the orthodontic screw 31. Therefore, when the circuit breaker is used, the first conductive piece 1 and the second conductive piece 2 are propped against the circuit breaker contact 5, so that the circuit breaker contact cannot rotate along with the rotation of the positive and negative screw rod 31, then the first conductive piece 1 and the second conductive piece 2 can be far away from each other (mutually close) by means of the positive and negative screw thread structure on the positive and negative screw rod 31 through rotating the positive and negative screw rod 31, and the first conductive piece 1 and the second conductive piece 2 are mutually close (mutually far away) by reversely rotating the positive and negative screw rod 31. The shank of the positive and negative screw rod 31 is provided with a thread-free portion 33 that separates the positive and negative teeth. So that the first conductive piece 1 and the second conductive piece 2 can not collide in the moving process, and short circuit is avoided. The length of the unthreaded portion 33 may be selected to be 0.4cm to 0.6cm, preferably 0.5cm.
In addition, the rotary handle 32 includes a star-shaped hand wheel; two star-shaped handwheels are respectively arranged at two ends of the front and back tooth screw rod 31. The star-shaped hand wheel is convenient to operate and control, so that the rotation is more convenient.
In some embodiments, the first conductive element 1 and the second conductive element 2 each comprise a contact head 6 and a slider 7; the contact head 6 is arranged on the sliding block 7, a threaded through hole for the first conductive piece 1 to pass through is arranged on the sliding block 7, and the test interface 4 is positioned on the sliding block 7; the contacts 6 of the first conductive element 1 correspond to the contacts 6 of the second conductive element 2.
In some embodiments, the slider 7 may be a rectangular metal block, and in particular may be a copper block, where one end in the length direction is provided with a contact head 6, the other end is provided with a test interface 4, and the middle is provided with a threaded through hole.
In some embodiments, the contact head 6 is provided with an abutment 11 shaped to fit the circuit breaker contact 5. The existence of the abutting part 11 enables the contact head 6 to be attached to the breaker contact 5 more tightly, increases the contact area, ensures good conductivity and is beneficial to improving the accuracy of the test.
In some embodiments, further comprising a connecting wire 8; one end of the connecting wire 8 is provided with a connector which is matched with the test interface 4; the other end of the connecting wire 8 has a main wire end 9 and a branch wire end 10. The connecting wire 8 is used for connecting with a testing space of the testing device, a connector at one end of the connecting wire is matched with the testing interface 4, and the other end of the connecting wire is divided into a main wire head 9 and a branch wire head 10 which are respectively used for connecting with different testing holes of the testing device, and the connecting wire is selected according to the testing content. For example, the main line head 9 and the branch line head 10 may be banana joints for interfacing with voltage test holes on the loop resistance tester and copper noses for interfacing with current test holes on the loop resistance tester, respectively.
Referring to fig. 1 and 2, a first embodiment of the utility model is as follows:
a circuit breaker loop resistance test connector comprises a first conductive piece 1, a second conductive piece 2 and a control base 3; the first conductive piece 1 and the second conductive piece 2 are respectively arranged on the control base 3 in a sliding way, and the sliding directions of the first conductive piece 1 and the second conductive piece 2 are close to each other or far away from each other; the first conductive piece 1 and the second conductive piece 2 are respectively provided with a test interface 4; the control base 3 is used for simultaneously controlling the sliding of the first conductive piece 1 and the second conductive piece 2, and the first conductive piece 1 and the second conductive piece 2 are used for simultaneously abutting and connecting with the breaker contact 5.
In the present embodiment, the control base 3 includes a front and back feed screw 31 and a rotary handle 32; the first conductive member 1 and the second conductive member 2 are respectively rotatably disposed on the orthodontic portion and the orthodontic portion of the orthodontic screw 31, and the rotary handle 32 is disposed at the end of the orthodontic screw 31.
In this embodiment, a circuit breaker loop resistance test connector is used according to the following principle:
first, the first conductive member 1 and the second conductive member 2 are put into the breaker contact 5;
then, the rotary handle 32 is operated, the positive and negative tooth screw rod 31 is rotated, so that the first conductive piece 1 and the second conductive piece 2 are far away from each other until the first conductive piece 1 and the second conductive piece 2 are in abutting connection with the inner side wall of the breaker contact 5, static friction force is generated by means of pressing force, and the first conductive piece 1 and the second conductive piece 2 cannot be separated from the breaker contact 5;
finally, the test interface 4 is connected with a test hole of the test instrument to start the test.
Referring to fig. 3, a second embodiment of the present utility model is as follows:
the circuit breaker loop resistance test connector further comprises a connecting wire 8 on the basis of the first embodiment; one end of the connecting wire 8 is provided with a connector which is matched with the test interface 4; the other end of the connecting wire 8 has a main wire end 9 and a branch wire end 10.
In summary, the circuit breaker loop resistance test connector provided by the utility model adopts a sliding structure, the first conductive piece and the second conductive piece are controlled to slide on the positive and negative tooth screw rod through the rotary handle, the first conductive piece and the second conductive piece are far away from or close to each other during sliding and are in abutting connection with the circuit breaker contact after sliding, and stable conductive connection is realized by virtue of the pressing force between the first conductive piece and the second conductive piece and the circuit breaker contact, so that the contact area can be effectively increased, the circuit breaker loop resistance test connector can be applicable to circuit breaker contacts with different sizes, and the circuit breaker loop resistance test connector is provided with a connecting wire for connecting a test instrument.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent changes made by the description of the utility model and the accompanying drawings, or direct or indirect application in the relevant art, are intended to be included within the scope of the utility model.
Claims (7)
1. The circuit breaker loop resistance test connector is characterized by comprising a first conductive piece, a second conductive piece and a control base;
the first conductive piece and the second conductive piece are respectively arranged on the control base in a sliding way, and the sliding directions of the first conductive piece and the second conductive piece are mutually close to or mutually far away from each other;
the first conductive piece and the second conductive piece are respectively provided with a test interface;
the control base is used for simultaneously controlling the first conductive piece and the second conductive piece to slide, and the first conductive piece and the second conductive piece are used for simultaneously abutting and connecting with the breaker contact.
2. The circuit breaker loop resistance test connector of claim 1, wherein the control base comprises a positive and negative lead screw and a rotary handle;
the first conductive piece and the second conductive piece are respectively and rotatably arranged on the orthodontic part and the anti-dental part of the positive and negative dental screw rod, and the rotary handle is arranged at the end part of the positive and negative dental screw rod.
3. The circuit breaker loop resistance test connector of claim 2, wherein said first conductive member and said second conductive member each comprise a contact and a slider;
the contact head is arranged on the sliding block, a threaded through hole for the first conductive piece to pass through is formed in the sliding block, and the test interface is positioned on the sliding block;
the contact of the first conductive member corresponds to the contact of the second conductive member.
4. A circuit breaker loop resistance testing connector according to claim 3 wherein said contact is provided with an abutment shaped to fit said circuit breaker contacts.
5. The circuit breaker loop resistance test connector of claim 2 wherein said rotary handle comprises a star wheel;
the two star-shaped handwheels are respectively arranged at the two ends of the positive and negative tooth screw rod.
6. The circuit breaker loop resistance test connector of claim 1, further comprising a connecting wire;
one end of the connecting wire is provided with a connector matched with the test interface;
the other end of the connecting wire is provided with a main wire head and a branch wire head.
7. The circuit breaker loop resistance test joint of claim 2, wherein the shank middle portion of the positive and negative lead screw is provided with a non-threaded portion separating the positive and negative teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321720829.XU CN220419385U (en) | 2023-07-03 | 2023-07-03 | Circuit breaker loop resistance test joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321720829.XU CN220419385U (en) | 2023-07-03 | 2023-07-03 | Circuit breaker loop resistance test joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220419385U true CN220419385U (en) | 2024-01-30 |
Family
ID=89653786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321720829.XU Active CN220419385U (en) | 2023-07-03 | 2023-07-03 | Circuit breaker loop resistance test joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220419385U (en) |
-
2023
- 2023-07-03 CN CN202321720829.XU patent/CN220419385U/en active Active
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| GR01 | Patent grant |