CN218592832U

CN218592832U - Clamp for circuit breaker test

Info

Publication number: CN218592832U
Application number: CN202222880412.1U
Authority: CN
Inventors: 王中林; 聂宗军; 何爱会
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-10
Anticipated expiration: 2032-10-31

Abstract

The utility model relates to a mechanical automation technical field specifically discloses a circuit breaker test is with anchor clamps. The utility model provides a clamp for testing circuit breaker, the first end of the handle is rotated relative to the clamp body through the second end of the hand-held handle to increase the distance between the first ends of the two handles, so that the first ends of the two handles can clamp the bulge in the middle of the circuit breaker, and the elastic part enables the first ends of the two handles to have the tendency of clamping the circuit breaker so as to stably fix the clamp on the circuit breaker; after the clamp is fixed on the short circuiter, the first end of the probe is electrically connected with the wiring seat of the circuit breaker, the test power supply is connected with the second end of the probe, the tests on the items such as the voltage, the current, the power, the leakage current and the electric energy of the circuit breaker can be realized, the test process does not need manual intervention, the safety of the test process is ensured, the circuit breaker in a terminal box is convenient to test, and the manual holding clamp is convenient to install and disassemble on the circuit breaker.

Description

Clamp for circuit breaker test

Technical Field

The utility model relates to a mechanical automation technical field especially relates to a circuit breaker test is with anchor clamps.

Background

In the prior art, when testing items such as voltage, current, power, leakage current and electric energy of a circuit breaker in a terminal box, the space in the terminal box is small, the space for testing the circuit breaker is small, and a conventional test fixture cannot be placed, and the test is completed by a handheld probe. In the testing process, the probe is required to be pressed on the wiring seat of the miniature circuit breaker by hands until the testing is finished, and great potential safety hazards exist in the testing process.

Therefore, it is desirable to provide a clamp for testing a circuit breaker to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps are used in circuit breaker test realizes replacing manual operation to the automatic test of circuit breaker, has improved the security performance of test.

To achieve the purpose, the utility model adopts the following technical proposal:

the clamp for the breaker test comprises:

a clamp body;

the clamping assembly comprises two handles which are arranged at intervals, the middle parts of the handles are rotatably connected with the clamp body, a bulge part in the middle part of the circuit breaker is clamped between the first ends of the two handles, the second ends of the two handles are respectively connected with the clamp body through elastic pieces, and the elastic pieces always have the tendency that the first ends of the two handles clamp the circuit breaker;

two probes, set up in on the anchor clamps body the handle centre gripping during the bellying, the first end of probe with the connection terminal conductive connection of circuit breaker, the second end of probe is used for being connected with test power supply.

As an optional technical solution of the above clamp for testing a circuit breaker, the clamp body includes:

the connecting piece comprises a connecting block and connecting plates arranged at two opposite ends of the connecting block, the middle part of the handle is rotatably connected with the connecting block, and the second end of the handle is connected with the connecting block through the elastic piece;

the insulating installation block, the one end of insulating installation block with the connecting plate is connected, the other end be used for with the connection terminal contact, the first end of probe passes in proper order the connecting plate with insulating installation block.

As an optional technical solution of the above clamp for testing a circuit breaker, the connecting block includes:

the connecting block body is provided with a long hole, the first end of the handle penetrates through the long hole, and the middle part of the handle is rotationally connected with the hole wall of the long hole;

the supporting column is arranged between the two handles and connected with the connecting block body, and the second end of each handle is connected with the supporting column through an elastic piece.

As an optional technical solution of the clamp for testing the circuit breaker, the width of the first end of the handle is larger than the width of the other parts of the handle.

As an optional technical scheme of the clamp for the circuit breaker test, an anti-slip piece is arranged on a surface, contacting the first end of the handle and the circuit breaker, of the handle.

As an optional technical solution of the above clamp for testing a circuit breaker, the anti-slip member includes a rubber pad fixed on the handle.

As an optional technical scheme of the clamp for the breaker test, the rubber pad is made of polyurethane.

As an optional technical scheme of the clamp for testing the circuit breaker, a first mounting hole is formed in the handle, a second mounting hole is formed in the clamp body, and two ends of the elastic piece are respectively arranged in the first mounting hole and the second mounting hole.

As an optional technical scheme of the clamp for testing the circuit breaker, two opposite sides of the clamp body are respectively provided with a first connecting piece and a second connecting piece, and the first connecting piece of one clamp body can be detachably connected with the second connecting piece of the other clamp body.

As an optional technical solution of the above clamp for testing a circuit breaker, the first connecting piece includes a first magnetic piece, the second connecting piece includes a second magnetic piece, and the magnetism of the first magnetic piece is opposite to that of the second magnetic piece.

The utility model has the advantages that:

the utility model provides a clamp for testing circuit breaker, the first end of the handle is rotated relative to the clamp body through the second end of the hand-held handle to increase the distance between the first ends of the two handles, so that the first ends of the two handles can clamp the bulge in the middle of the circuit breaker, and the elastic part enables the first ends of the two handles to have the tendency of clamping the circuit breaker so as to stably fix the clamp on the circuit breaker; after the clamp is fixed on the short-circuiting device, the first end of the probe is in conductive connection with the wiring seat of the circuit breaker, and the test power supply is connected with the second end of the probe, so that the test on the items such as voltage, current, power, leakage current, electric energy and the like of the circuit breaker can be realized, the manual intervention is not needed in the test process, and the safety of the test process is ensured; furthermore, the utility model provides a test fixture for circuit breaker's compact structure is convenient for test the circuit breaker in the terminal box to and be convenient for artifical handheld anchor clamps installation and dismantle in the circuit breaker.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a clamp according to an embodiment of the present invention mounted on a circuit breaker;

fig. 3 is a schematic structural diagram of a first view angle of the clamp according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second viewing angle of the clamp according to the embodiment of the present invention;

fig. 5 is a schematic view of a first view angle of a connection structure of a handle and a clamp body provided by an embodiment of the present invention;

fig. 6 is a schematic view of a second view angle of the connection structure of the handle and the clamp body according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a plurality of clamps installed on a plurality of circuit breakers according to an embodiment of the present invention.

In the figure:

100. a circuit breaker; 101. a boss portion; 102. a wire holder;

10. a clamp;

1. a clamp body; 2. a clamping assembly; 3. a probe;

11. a connecting member; 111. connecting blocks; 1111. a connecting block body; 1112. a support pillar; 1113. a strip hole; 112. a connecting plate; 12. an insulating mounting block; 13. a first connecting member; 14. a second connecting member;

21. a handle; 22. an elastic member; 23. an anti-slip member; 24. a rotating shaft; 25. clamping the gasket; 26. and a limiting plate.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

To among the prior art, all accomplish through handheld probe the test of the circuit breaker in the terminal box, have the problem of very big potential safety hazard in the test process, this embodiment provides a circuit breaker test is with anchor clamps in order to solve above-mentioned technical problem.

As shown in fig. 1, the circuit breaker 100 includes a housing, a protrusion 101 is provided at a middle portion of the housing, and wire holders 102 are provided at both sides of the protrusion 101, respectively, and the wire holders 102 are used to fix ends of wires. Generally, a wire connection port is formed in the side surface of the wire holder 102, a wire is inserted into the wire connection port, a pressing piece is arranged on the wire holder 102, the pressing piece comprises a pressing bolt and a pressing piece connected with the rod portion of the pressing bolt, the pressing piece is arranged in the wire connection port, the head of the pressing bolt is exposed outside the upper surface of the wire holder 102, and the head of the pressing bolt is screwed to enable the pressing piece to be in press connection with the wire. Pressing blade and clamp bolt are electrically conductive, and when pressing blade and wire contact, if the wire is electrified, then clamp bolt is also electrified, can make probe and clamp bolt contact in order to test circuit breaker 100's performance. Based on this, the present embodiment provides a clamp for a circuit breaker test, the clamp 10 can clamp the protruding portion 101 of the circuit breaker 100, and the probe on the clamp 10 contacts with the head of the pressing bolt on the wire holder 102, so as to test the voltage, current, power, leakage current, electric energy and other items of the circuit breaker 100.

Specifically, as shown in fig. 2 and 3, the jig 10 includes a jig body 1, a clamping assembly 2, and two probes 3. The centre gripping subassembly 2 includes the handle 21 that two intervals set up, and the middle part and the anchor clamps body 1 of handle 21 rotate to be connected, are used for the bellying 101 in centre gripping circuit breaker 100 middle part between the first end of two handles 21, and the second end of two handles 21 is connected with anchor clamps body 1 through elastic component 22 respectively, and elastic component 22 has the trend that makes the first end of two handles 21 press from both sides tight circuit breaker 100 all the time. The two probes 3 are arranged on the fixture body 1, when the handle 21 clamps the protruding part 101, a first end of the probe 3 is electrically connected with the wire holder 102 of the circuit breaker 100, and a second end of the probe 3 is used for being connected with a test power supply.

The first ends of the handles 21 are rotated relative to the clamp body 1 by holding the second ends of the handles 21 so as to increase the distance between the first ends of the two handles 21, so that the first ends of the two handles 21 clamp the convex part 101 in the middle of the circuit breaker 100, and the elastic part 22 enables the first ends of the two handles 21 to have a tendency of clamping the circuit breaker 100 so as to stably fix the clamp 10 on the circuit breaker 100; after the clamp 10 is fixed on the circuit breaker 100, the first end of the probe 3 is in conductive connection with the wire holder 102 of the circuit breaker 100, and the test power supply is connected with the second end of the probe 3, so that the test of the items such as voltage, current, power, leakage current, electric energy and the like of the circuit breaker 100 can be realized, the manual intervention is not needed in the test process, and the safety of the test process is ensured; in addition, the test fixture for the circuit breaker provided by the embodiment has a compact structure, and is convenient for testing the circuit breaker 100 in the terminal box and mounting and dismounting the manual handheld fixture 10 on the circuit breaker 100.

In some embodiments, the clamp body 1 includes a connector 11 and an insulative mounting block 12. The connection member 11 includes a connection block 111 and connection plates 112 disposed at opposite ends of the connection block 111. One end of the insulative mounting block 12 is connected to the connection plate 112. The connecting member 11 and the two insulating mounting blocks 12 are assembled to form a structure matched with the shape of the upper surface of the circuit breaker 100, and the protruding part 101 of the circuit breaker 100 can be accommodated between the two insulating mounting blocks 12. The other end of the insulating mounting block 12 is in contact with the wire holder 102, and the first end of the probe 3 passes through the connecting plate 112 and the insulating mounting block 12 in turn to be electrically connected with the wire holder 102, so that the insulating mounting block 12 is arranged to effectively prevent the connecting piece 11 from being in contact with the wire holder 102 to cause unnecessary electrical conduction.

Optionally, the insulative mounting block 12 is bolted to the connection plate 112 for ease of assembly. In other embodiments, the insulative mounting block 12 may be secured to the connecting plate 112 by bonding or the like.

The boss 101 of the circuit breaker 100 can be received between the two insulative mounting blocks 12, thereby placing the first end of the handle 21 between the two insulative mounting blocks 12 to clamp the boss 101. The middle part of the handle 21 is rotatably connected with the connecting block 111, the second end of the handle 21 is connected with the connecting block 111 through the elastic member 22, and the second end of the handle 21 can be operated by a person.

Further, the connecting block 111 comprises a connecting block body 1111 and a supporting column 1112, the connecting block body 1111 has a long hole 1113, the first end of the handle 21 passes through the long hole 1113 to be disposed between the two insulation mounting blocks 12, the middle part of the handle 21 is rotatably connected with the hole wall of the long hole 1113, and the long hole 1113 provides a rotating space for the rotation of the handle 21.

In some embodiments, as shown in fig. 4, 5 and 6, the handle 21 is rotatably connected to the wall of the elongated hole 1113 by a shaft 24. Specifically, the handle 21 is rotatably disposed on the rotating shaft 24, and the rotating shaft 24 is mounted on the connecting block body 1111. Further optionally, the handle 21 epirelief is equipped with the turning block, is equipped with the through-hole on the turning block, and when installation handle 21, the first end of pivot 24 passes a lateral wall of rectangular hole 1113, through-hole and another lateral wall of rectangular hole 1113, and the second end of pivot 24 is equipped with limiting plate 26, and limiting plate 26's diameter is greater than the diameter of pivot 24, and the first end of pivot 24 is equipped with the joint groove along circumference and uses joint gasket 25 joint in the joint inslot to the position of the first end of fixed pivot 24. The limiting plate 26 and the clamping gasket 25 are matched to enable the rotating shaft 24 to be fixedly installed on the connecting block body 1111.

In order to improve the stability that pivot 24 is fixed to and make joint gasket 25 not occupation space, the concave holding tank that is equipped with on connecting block body 1111, joint gasket 25 avoids external factors to lead to joint gasket 25 to drop in arranging the holding tank in. Furtherly, the edge setting that one side link up connecting block body 1111 of holding tank to installation joint gasket 25 is in the joint inslot.

With continued reference to fig. 2 and 3, a support pillar 1112 is disposed between the two handles 21, the support pillar 1112 is connected to the connecting block body 1111, the second end of the handle 21 is connected to the support pillar 1112 through an elastic member 22, and the support pillar 1112 provides a mounting carrier for the elastic member 22. Optionally, one end of the supporting pillar 1112 is connected to a side of the connecting block body 1111 facing away from the insulative mounting block 12, so as to facilitate mounting of the elastic member 22.

Optionally, a protruding block is convexly arranged on an end face of one end, connected with the connecting block body 1111, of the support pillar 1112, the protruding block is inserted into the elongated hole 1113, and the protruding block and the connecting block body 1111 are connected through a bolt, so that the support pillar 1112 can be conveniently assembled on the connecting block body 1111, and the structure is simple.

In some embodiments, the elastic member 22 is detachably connected to the clamp body 1 and the handle 21, and the elastic member 22 having a different elastic force may be replaced to change a clamping force of the clamp 10 clamping the circuit breaker 100. Optionally, a first mounting hole is formed in the handle 21, a second mounting hole is formed in the fixture body 1, two ends of the elastic element 22 are respectively disposed in the first mounting hole and the second mounting hole, and two ends of the elastic element 22 are respectively disposed in the first mounting hole and the second mounting hole. When the elastic member 22 needs to be detached, the elastic member 22 is compressed, so that the elastic member 22 is separated from the handle 21 or the clamp body 1, and can be detached.

The elastic member 22 may be a spring, a pressure spring, a leaf spring, etc., and is not particularly limited herein.

According to the structure of the clamp body 1, the second mounting hole is opened on the support pillar 1112 of the clamp body 1.

To increase the gripping area of the handle 21 for gripping the boss 101 of the circuit breaker 100, in some embodiments, the width of the first end of the handle 21 is greater than the width of the rest of the handle 21.

The surface that the first end of handle 21 and circuit breaker 100 contact is equipped with anti-skidding piece 23, has increased the frictional force between handle 21 and the circuit breaker 100, and then has increased the clamping-force of handle 21 centre gripping circuit breaker 100, has improved the stability that anchor clamps 10 are fixed in on circuit breaker 100.

Further optionally, the anti-slip member 23 includes a rubber pad fixed on the handle 21, and the rubber pad has a certain flexibility to increase the friction force between the handle 21 and the circuit breaker 100 and protect the circuit breaker 100 from being damaged when the circuit breaker 100 is clamped by the clamp 10.

The rubber pad is made of polyurethane, so that the friction force between the handle 21 and the breaker 100 is further effectively increased, the rubber pad is wear-resistant, and the service life of the rubber pad is prolonged.

In order to improve the testing efficiency and enable the simultaneous testing of a plurality of circuit breakers 100, in some embodiments, as shown in fig. 3, 4 and 7, the first connecting member 13 and the second connecting member 14 are respectively disposed at both sides of the fixture body 1, and the first connecting member 13 of one fixture body 1 can be detachably connected to the second connecting member 14 of another fixture body 1. In the terminal box, a plurality of circuit breakers 100 are arranged side by side, and in order to realize simultaneous testing of the plurality of circuit breakers 100, a plurality of clamps 10 are connected by a first connecting member 13 and a second connecting member 14 so that the plurality of clamps 10 are connected side by side.

Further optionally, the first connector 13 comprises a first magnetic member, and the second connector 14 comprises a second magnetic member, wherein the first magnetic member and the second magnetic member have opposite magnetism, so that the plurality of clamps 10 can be conveniently detached and connected.

In order to improve the reliability of the connection between the clamps 10, a first connecting member 13 and a second connecting member 14 are respectively arranged on both sides of the connecting member 11 and both sides of the insulative mounting block 12, and the connection point of the two clamps 10 is increased.

When using the anchor clamps 10 for circuit breaker test that this application provided, according to the test demand, with single or a plurality of anchor clamps 10 centre gripping on the circuit breaker 100 that is surveyed, specifically speaking, the second end of handheld handle 21, make the interval grow of the first end of two handles 21 with the bellying 101 of centre gripping circuit breaker 100 middle part, loosen the second end of handle 21, the handle 21 centre gripping is on bellying 101, and guarantee that the first end of probe 3 and the effective electrically conductive connection of connector bracket 102 of circuit breaker 100, test power supply is connected with the second end of probe 3, form the test return circuit, with the performance of test circuit breaker 100.

After the test is finished, the second ends of the handles 21 are held by hands, so that the distance between the first ends of the two handles 21 is increased, and the clamp 10 is manually taken down.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Anchor clamps are used in circuit breaker test, its characterized in that includes:

a clamp body (1);

the clamping assembly (2) comprises two handles (21) arranged at intervals, the middle parts of the handles (21) are rotatably connected with the clamp body (1), a boss (101) used for clamping the middle part of the circuit breaker (100) is arranged between the first ends of the two handles (21), the second ends of the two handles (21) are respectively connected with the clamp body (1) through an elastic piece (22), and the elastic piece (22) always has the tendency that the first ends of the two handles (21) clamp the circuit breaker (100);

two probes (3) arranged on the clamp body (1), wherein when the lug boss (101) is clamped by the handle (21), the first ends of the probes (3) are in conductive connection with the wire holder (102) of the circuit breaker (100), and the second ends of the probes (3) are used for being connected with a test power supply.

2. The jig for testing circuit breakers according to claim 1, wherein the jig body (1) comprises:

the connecting piece (11) comprises a connecting piece (111) and connecting plates (112) arranged at two opposite ends of the connecting piece (111), the middle part of the handle (21) is rotatably connected with the connecting piece (111), and the second end of the handle (21) is connected with the connecting piece (111) through the elastic piece (22);

the probe comprises an insulating mounting block (12), one end of the insulating mounting block (12) is connected with the connecting plate (112), the other end of the insulating mounting block is used for being in contact with the wire holder (102), and the first end of the probe (3) sequentially penetrates through the connecting plate (112) and the insulating mounting block (12).

3. The jig for testing circuit breakers according to claim 2, wherein the connection block (111) comprises:

the connecting block body (1111) is provided with a long hole (1113), the first end of the handle (21) penetrates through the long hole (1113), and the middle of the handle (21) is rotatably connected with the hole wall of the long hole (1113);

a supporting column (1112) arranged between the two handles (21) and connected with the connecting block body (1111), wherein the second end of the handle (21) is connected with the supporting column (1112) through an elastic piece (22).

4. The clamp for testing the circuit breaker according to claim 1, wherein a width of the first end of the handle (21) is greater than a width of the rest of the handle (21).

5. The clamp for testing the circuit breaker according to claim 1, wherein a surface of the first end of the handle (21) contacting the circuit breaker (100) is provided with an anti-slip member (23).

6. The clamp for circuit breaker testing according to claim 5, wherein the anti-slip member (23) comprises a rubber pad fixed to the handle (21).

7. The jig for testing breakers of claim 6, wherein the rubber pad is made of polyurethane.

8. The clamp for testing the circuit breaker according to claim 1, wherein a first mounting hole is formed on the handle (21), a second mounting hole is formed on the clamp body (1), and two ends of the elastic member (22) are respectively disposed in the first mounting hole and the second mounting hole.

9. The clamp for the circuit breaker test according to claim 1, wherein a first connecting piece (13) and a second connecting piece (14) are respectively arranged on two opposite sides of the clamp body (1), and the first connecting piece (13) of one clamp body (1) can be detachably connected with the second connecting piece (14) of the other clamp body (1).

10. The clamp for testing the circuit breaker according to claim 9, wherein the first connecting member (13) comprises a first magnetic member, the second connecting member (14) comprises a second magnetic member, and the first magnetic member and the second magnetic member have opposite magnetism.