Screwing type circuit breaker loop resistance high-altitude test clamp

Abstract

The utility model belongs to the technical field of electric power engineering, and particularly relates to a screwing type circuit breaker loop resistance high-altitude test clamp which comprises a frame. The inner surface wall of the frame is fixedly connected with a rotating rod; the outer surface wall of the rotating rod is rotationally connected with a nylon plate; the bottom of the nylon plate is fixedly connected with a first brass plate; one end of the first brass plate is rotationally connected with a first butterfly bolt; the inner surface wall of the first butterfly bolt is in threaded connection with an auxiliary screw; the top of the nylon plate is fixedly connected with a spiral spring; the top of the spiral spring penetrates through the frame and is in threaded connection with a spring fixing screw, and in the working process, the testing clamp type is arranged, so that the safety risk is reduced. A high-altitude operation mode is changed into a ground operation mode, testers are far away from the threat of high-current electric shock, the possibility of high-altitude accidental falling is eliminated, and the safety risk is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electric power engineering, specifically is the high altitude test pincers of circuit breaker loop resistance of screwing type. BACKGROUND

[0002] In the substation equipment test, the loop resistance of outdoor high voltage circuit breaker is an important technical parameter, according to which the working state of circuit breaker can be judged whether normal or not. But it is very troublesome to test the loop resistance of outdoor high voltage circuit breaker, for example, testing 110KV circuit breaker, since the circuit breaker is more than 6 meters high, first, a ladder is erected, two people support the ladder, one person wears a safety belt and climbs the ladder to work, and then the two test pincers of 100A loop resistance tester are clamped on the upper and lower connection panels respectively, then the ground personnel can test, and after testing, the test pincers are taken down. 110KV circuit breaker has A, B, C three phases, and each phase needs about 10 minutes to test, and the high-altitude operation personnel need to go up and down six times, and 4 operation personnel need to cooperate for about 30 minutes to complete the test project. Continuous high-altitude operation, 100A test of large current, high safety risk, high-altitude falling and electric shock danger, and long time consumption, low work efficiency.

[0003] At present, in the prior art, the 100A loop resistance tester used in power supply system is similar, and the test pincers are one large and one small two clamps as a group, a total of 2 groups of connection pincers, which must be connected by manual climbing, without high-altitude connection function.

[0004] In the existing substation equipment test, the safety risk is high, the continuous high-altitude operation exists high-altitude falling danger, when testing, the tester outputs 100A large current, if the high-altitude operation personnel do not come down in time after clamping the test pincers, or the instrument operator misoperates, there is a high risk of electric shock, therefore, the high-altitude test pincers of circuit breaker loop resistance of screwing type is proposed for the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the utility model provides the high-altitude test pincers of circuit breaker loop resistance of screwing type.

[0006] The utility model solves the technical scheme that the utility model discloses the high-altitude test pincers of circuit breaker loop resistance of screwing type, including the frame, the inner surface wall of the frame is fixedly connected with the rotating rod, the outer surface wall of the rotating rod is rotatably connected with the nylon plate, the bottom of the nylon plate is fixedly connected with the first brass plate, one end of the first brass plate is rotatably connected with the first butterfly bolt, the inner surface wall of the first butterfly bolt is threadedly connected with the auxiliary screw, the top of the nylon plate is fixedly connected with the spiral spring, the top of the spiral spring penetrates the frame and is threadedly connected with the spring fixed screw.

[0007] Preferably, the inner bottom wall of the frame is fixedly connected to an internal insulating plate; the bottom of the frame abuts against a second brass plate.

[0008] Preferably, the second brass plate is provided with brass plate fixing bolts through an internal insulating plate and a frame; the inner surface of the internal insulating plate is fixedly connected with an internal hexagonal connector.

[0009] Preferably, the internal hexagonal connector is threaded through the frame and the second brass plate and connected to a brass set screw; a set screw limiting plate is provided at the bottom of the brass set screw.

[0010] Preferably, a fixing nut is threaded onto the outer wall of the brass set screw; an insulating rod limiting clamp is fixedly connected to the inner wall of the set screw limiting plate.

[0011] Preferably, the set screw limiting plate is connected to the limiting screw via an insulating rod limiting hoop threaded connection.

[0012] Preferably, the bottom of the second brass plate is threaded with a second wing bolt.

[0013] The beneficial effects of this utility model are:

[0014] This invention provides a screw-on type high-altitude testing clamp for circuit breaker circuit resistance, reducing safety risks. By changing the high-altitude operation method to ground-based operation, testing personnel are kept away from the threat of electric shock from high currents, eliminating the possibility of accidental falls from heights and greatly reducing safety risks.

[0015] This invention provides a screw-on high-altitude test clamp for circuit breaker circuit resistance, reducing the waste of human resources. One person can complete the entire testing process from wiring to operating the instrument, eliminating the need for auxiliary personnel and reducing the number of operators from 4 to 1-2, greatly reducing the waste of human resources.

[0016] This utility model provides a screw-on type high-altitude test clamp for circuit breaker circuit resistance, which is simple and convenient to operate. After connecting the insulating rod, the tester first hangs the clamp on the circuit breaker terminal block, and then tightens the test clamp's set screw by rotating the insulating rod to perform the test. After the test, the insulating rod is rotated in the opposite direction to loosen the test clamp's set screw, making it easy to remove.

[0017] This utility model provides a screw-on type high-altitude test clamp for circuit breaker circuit resistance, which improves work efficiency. One person can complete the resistance test of the three-phase circuits A, B, and C of a 110KV circuit breaker in less than 10 minutes, and two people only need 5 minutes, increasing work efficiency by more than 10 times, while maintaining the same accuracy of test results. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0019] In the drawings:

[0020] Fig. 1 is a perspective view of the present application as a whole;

[0021] Fig. 2 is a perspective view of the frame in the present application;

[0022] Fig. 3 is a bottom view in the present application;

[0023] Fig. 4 is a side view in the present application.

[0024] Legend:

[0025] 1, frame; 2, coil spring; 3, spring fixing screw; 4, rotating rod; 5, nylon plate; 6, first brass plate; 7, first butterfly bolt; 8, auxiliary screw; 9, second brass plate; 10, brass jackscrew; 11, fixing nut; 12, jackscrew limiting plate; 13, insulating rod limiting hoop; 14, limiting screw; 15, built-in insulating plate; 16, inner hexagonal connector; 17, brass plate fixing bolt; 18, second butterfly bolt. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of the present application.

[0027] Specific embodiments are given below.

[0028] Please refer to Figs. 1 to 4The utility model provides a high altitude test forceps of circuit breaker loop resistance of screw type, including frame 1, the inner surface wall fixed connection of frame 1 has rotary rod 4, the outer surface wall rotationally connected of rotary rod 4 has nylon plate 5, the bottom fixed connection of nylon plate 5 has first brass plate 6, one end rotationally connected of first brass plate 6 has first butterfly bolt 7, the inner surface wall screw thread connection of first butterfly bolt 7 has auxiliary screw 8, the top fixed connection of nylon plate 5 has spiral spring 2, the top of spiral spring 2 is penetrated frame 1 screw thread connection and has spring fixed screw 3, the inner bottom wall fixed connection of frame 1 has built -in insulating plate 15, the bottom of frame 1 abuts with second brass plate 9, and second brass plate 9 is provided with brass plate fixed bolt 17 through built -in insulating plate 15 and frame 1, the inner surface wall fixed connection of built -in insulating plate 15 has internal hexagon connector 16, and internal hexagon connector 16 is penetrated frame 1 and second brass plate 9 screw thread connection and has brass top silk 10, and the bottom of brass top silk 10 is provided with top silk limiting plate 12, and the outer surface wall screw thread connection of brass top silk 10 has fixed nut 11, the inner surface wall fixed connection of top silk limiting plate 12 has insulating rod limiting hoop 13, and top silk limiting plate 12 is screw thread connection and has limiting screw 14 through insulating rod limiting hoop 13, the bottom screw thread connection of second brass plate 9 has second butterfly bolt 18, when working, the high altitude test forceps of circuit breaker loop resistance of screw type adopts 2mm channel steel as frame 1, and the upper part of jaw adopts 1 first brass plate 6 of 3 to 4mm thick, guarantees its on -off 100A large current's ability, and first brass plate 6 is twisted as arc, and the front contact part of first brass plate 6 is processed into sawtooth shape, to break through circuit breaker wiring board surface oxide layer, the back of first brass plate 6 utilizes nylon plate 5 and frame 1 and does insulation treatment, installs two spiral springs 2 between frame 1 and nylon plate 5, to ensure enough contact pressure, and adds a 2mm thick second brass plate 9 under test forceps frame 1, and utilizes drilling, tapping, installs a diameter 10mm brass top silk 10, ensures the conductivity of brass top silk 10, and the lower end of brass top silk 10 is fixed on top silk limiting plate 12, to connect insulating rod, and the upper and lower jaws are respectively assembled first butterfly bolt 9 and second butterfly bolt 18 on the upper end of first brass plate 6 and second brass plate 9, to connect test line, and the current line is connected with the end of first butterfly bolt 9, and the voltage line is connected with the end of second butterfly bolt 18.

[0029] Working principle: when testing the circuit resistance of the outdoor circuit breaker, first, the limiting screw 14 is rotated and moved to a far position, then the insulating rod is inserted into the inside of the insulating rod limiting hoop 13, then the limiting screw 14 is rotated to fix the insulating rod, then the current line and the voltage line are classified, so that the current line is connected between the first butterfly bolt 7 and the auxiliary screw 8, at the same time, the first butterfly bolt 7 and the auxiliary screw 8 can be separated and approached by rotating, the second butterfly bolt 18 is rotated to make the voltage line be installed after descending, and because the second brass plate 9 and the brass top screw 10 are in contact and connection, and both are conductive materials, the brass top screw 10 is lifted after thread movement by rotating the insulating rod, until the first brass plate 6 is contacted, at this time, the current line and the voltage line form a passage to complete the test, and the brass top screw 10 can be loosened after the test is completed.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A screw-on circuit breaker loop resistance high altitude test forceps comprising a frame (1); characterized in that: The inner surface wall of the frame (1) is fixedly connected with a rotating rod (4); the outer surface wall of the rotating rod (4) is rotatably connected with a nylon plate (5); the bottom of the nylon plate (5) is fixedly connected with a first brass plate (6); one end of the first brass plate (6) is rotatably connected with a first butterfly bolt (7); the inner surface wall of the first butterfly bolt (7) is threadedly connected with an auxiliary screw (8); the top of the nylon plate (5) is fixedly connected with a spiral spring (2); the top of the spiral spring (2) penetrates through the frame (1) and is threadedly connected with a spring fixing screw (3).

2. The turn-on circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The inner bottom wall of the frame (1) is fixedly connected with a built-in insulation plate (15); the bottom of the frame (1) is abutted with a second brass plate (9).

3. The turn-on circuit breaker loop resistance high altitude test forceps of claim 2, wherein: The second brass plate (9) is provided with a brass plate fixing bolt (17) through the built-in insulation plate (15) and the frame (1); the inner surface wall of the built-in insulation plate (15) is fixedly connected with an internal hexagonal connector (16).

4. The turn-on circuit breaker loop resistance high altitude test forceps of claim 3, wherein: The internal hexagonal connector (16) penetrates through the frame (1) and the second brass plate (9) and is threadedly connected with a brass top screw (10); the bottom of the brass top screw (10) is provided with a top screw limiting plate (12).

5. The turn-on circuit breaker loop resistance high altitude test forceps of claim 4 wherein: the first and second jaws are configured to be closed by a user to grip the circuit breaker; and the first and second jaws are configured to be opened by a user to release the circuit breaker. 5 The outer surface wall of the brass top screw (10) is threadedly connected with a fixing nut (11); the inner surface wall of the top screw limiting plate (12) is fixedly connected with an insulating rod limiting hoop (13).

6. The turn-on circuit breaker loop resistance high altitude test forceps of claim 5 wherein: The top screw limiting plate (12) is threadedly connected with a limiting screw (14) through the insulating rod limiting hoop (13).

7. The turn-on circuit breaker loop resistance high altitude test forceps of claim 2 wherein: The bottom of the second brass plate (9) is threadedly connected with a second butterfly bolt (18).

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