Spring type circuit breaker loop resistance high-altitude test clamp

Abstract

The utility model belongs to the field of auxiliary tools for testing power supply system equipment, and particularly relates to a high-altitude test clamp for loop resistance of a spring type circuit breaker, which comprises a frame. Nylon plates are symmetrically mounted on the inner side of the frame; a first connecting hole is formed in the end part of the nylon plate; second connecting holes are symmetrically formed in the end parts of the frame; bolt pairs are mounted on the inner sides of the first connecting hole and the second connecting hole; brass plates are fixedly connected to the ends, close to each other, of the two nylon plates; a plurality of groups of springs are fixedly connected between the frame and the nylon plate; the outer side of the frame is fixedly connected with a threaded connector. By operating high-altitude wiring on the ground, the risk of high-altitude operation is avoided, and the possibility of electric shock and falling is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the auxiliary tool field of power supply system equipment test, concretely is spring type circuit breaker loop resistance high altitude test forceps. BACKGROUND

[0002] In the power system, the circuit breaker is as the important protection equipment, bears the key task of cutting off the current, protects other equipment from being damaged when the fault occurs.

[0003] And the circuit resistance of circuit breaker is one of important technical parameters of its conductive performance, it directly reflects the contact quality and conductive capacity of the internal conductive component of circuit breaker, if the circuit resistance value is too high, can cause the overheat phenomenon of circuit breaker under normal working current, and further causes the problem such as poor contact, arc ablation, and seriously can even cause equipment failure or fire, influence the stability and reliability of entire power system.

[0004] However, it is very troublesome to test the circuit resistance of outdoor high-voltage circuit breaker, for example, in 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 forceps of 100A circuit resistance tester are clamped on the upper and lower connection panels respectively, and then the person on the ground can test, and then the test forceps are taken down after the test, 110KV circuit breaker has three phases of A, B and C, and each phase needs to be tested for about 10 minutes, and the high-altitude worker needs to go up and down six times, and 4 workers need to cooperate for about 30 minutes to complete the test project, and the continuous high-altitude operation and 100A test of large current have high safety risks, and there are high-altitude falling and electric shock dangers. 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 spring type circuit breaker loop resistance high altitude test forceps.

[0006] The utility model solves the technical scheme that the utility model discloses spring type circuit breaker loop resistance high altitude test forceps, including the frame, the inside symmetry of frame installs nylon board, the first connecting hole is set up to the end of nylon board, the second connecting hole is set up to the end of symmetry of frame, the inside installation of first connecting hole and second connecting hole has screw pair, the mutual close one end of two nylon boards is all fixedly connected with brass board, the fixed connection of frame and nylon board has multiple spring, the outside fixed connection of frame has screw joint.

[0007] Preferably, the frame is made of channel steel or aluminum alloy material.

[0008] Preferably, the spring is one of a coil spring, a rod spring or a connecting rod spring.

[0009] Preferably, the brass plates are each provided with a plurality of sawtooth grooves at one end.

[0010] Preferably, the brass plates have a thickness of 3-4 mm.

[0011] Preferably, the brass plates are each provided with a plurality of sawtooth grooves at one end.

[0012] The utility model discloses the beneficial effect lies in:

[0013] 1. The utility model discloses a spring circuit breaker loop resistance high altitude test clamp, through ground operation high altitude wiring, avoided the risk of high altitude operation, eliminated the possibility of electric shock and falling.

[0014] 2. The utility model discloses a spring circuit breaker loop resistance high altitude test clamp, when the tooth groove is in the test clamp clamping, can pierce the oxidation layer on the surface of the wiring board, increases the contact area, ensures the current to pass smoothly. DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to be used in the embodiment or prior art description simple introduction, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0016] Figure 1 It is the three-dimensional structure schematic diagram in the utility model;

[0017] Figure 2 It is the frame cross section structure schematic diagram in the utility model;

[0018] Figure 3 It is the brass plate structure schematic diagram in the utility model;

[0019] Figure 4 It is the bolt pair structure schematic diagram in the utility model.

[0020] In the drawing: 101, frame; 102, nylon plate; 103, first connecting hole; 104, bolt pair; 105, second connecting hole; 106, brass plate; 107, reserved hole; 108, butterfly bolt; 109, sawtooth groove; 110, spring; 111, threaded joint. DETAILED DESCRIPTION

[0021] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0022] As shown in Figures 1-4 The spring type circuit breaker loop resistance high altitude test clamp, including frame 101, the inside symmetry of frame 101 is installed with nylon plate 102, the end of nylon plate 102 is equipped with first connecting hole 103, the end symmetry of frame 101 is equipped with second connecting hole 105, the inside of first connecting hole 103 and second connecting hole 105 is installed with bolt pair 104, the end of mutual approach of two nylon plate 102 is all fixedly connected with brass plate 106, the fixed connection of frame 101 and nylon plate 102 is equipped with multiple spring 110, the outside of frame 101 is fixedly connected with threaded joint 111, when working, the operating personnel connects the test line of loop resistance tester with butterfly bolt 108 of high altitude test clamp, and fixes test clamp with insulating rod through threaded joint 111, the operating personnel aims the jaw of test clamp at the upper and lower wiring board of circuit breaker through insulating rod on the ground, and quickly clamps, and spring 110 provides sufficient contact pressure, to ensure the close contact of test clamp and wiring board, after testing, the operating personnel easily removes test clamp by rotating insulating rod, this step, through ground operation high altitude wiring, avoids the risk of high altitude operation, eliminates the possibility of electric shock and falling.

[0023] As shown in Figures 1-4 Frame 101 is made of channel steel or aluminum alloy material, when working, frame 101 is made of channel steel material, to ensure the structural stability of test clamp in high altitude operation, and the lightness of channel steel reduces the burden of operating personnel, to facilitate the use in high altitude test, this step, the channel steel material has higher strength and durability, can bear the mechanical stress of test clamp in high altitude operation, and the lightness of channel steel facilitates the carrying and use of operating personnel.

[0024] As shown in Figures 1-2 Spring 110 is one of spiral spring, rod-shaped spring or connecting rod spring, when working, to provide sufficient contact pressure, to ensure the close contact of test clamp and circuit breaker wiring board.

[0025] As shown in Figures 1-3 The end of mutual approach of brass plate 106 is equipped with multiple sawtooth groove 109, when working, sawtooth groove 109 can pierce the oxidation layer on the surface of wiring board when test clamp clamps, to increase the contact area, to ensure the smooth passage of current.

[0026] As Figures 1-3 shown, the thickness of the brass plate 106 is 3mm-4mm; in operation, the thickness of the brass plate 106 is designed to ensure its conductivity in high-voltage test, and it can withstand the passage of large current, while its moderate thickness ensures the strength and does not increase the weight of the test clamp, in this step, the thickness of the brass plate 106 is 3-4mm, which ensures that it can withstand the conduction requirement of 100A large current, and ensures the durability and conductivity of the test clamp.

[0027] As Figure 1 shown, the brass plate 106 is provided with a reserved hole 107 at the end; the inside of the reserved hole 107 is provided with a butterfly bolt 108; in operation, the butterfly bolt 108 is connected with the test line through the reserved hole 107, and the current line and the voltage line are connected on the two brass plates 106 respectively, which ensures that the tester can accurately measure the loop resistance, in this step, the design of the butterfly bolt 108 makes the connection of the test line more convenient.

[0028] The working principle is that when testing the loop resistance of the outdoor high-voltage circuit breaker, the operator connects the test line of the loop resistance tester with the butterfly bolt 108 of the high-altitude test clamp, and fixes the test clamp with the insulating rod through the threaded joint 111, the operator on the ground aligns the jaws of the test clamp with the upper and lower connection plates of the circuit breaker through the insulating rod, and quickly clamps them, the sawtooth design of the brass plate 106 can break through the oxide layer on the surface of the connection plate, ensuring good conductivity, the spring 110 provides sufficient contact pressure to ensure the close contact of the test clamp with the connection plate, and after the test is completed, the operator easily removes the test clamp by rotating the insulating rod.

[0029] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A spring circuit breaker loop resistance high-altitude test clamp, comprising a frame (101); the inner side of the frame (101) is symmetrically provided with a nylon plate (102); the end of the nylon plate (102) is provided with a first connecting hole (103); the end of the frame (101) is symmetrically provided with a second connecting hole (105); the inner side of the first connecting hole (103) and the second connecting hole (105) is provided with a bolt pair (104); the end of the two nylon plates (102) close to each other is fixedly connected with a brass plate (106); the frame (101) and the nylon plate (102) are fixedly connected with a plurality of springs (110); the outer side of the frame (101) is fixedly connected with a threaded joint (111).

2. The spring circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The frame (101) is made of channel steel or aluminum alloy.

3. The spring circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The spring (110) is one of a spiral spring, a rod-shaped spring or a connecting rod spring.

4. The spring circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The end of the brass plate (106) close to each other is provided with a plurality of sawtooth grooves (109).

5. The spring circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The thickness of the brass plate (106) is 3mm-4mm.

6. The spring circuit breaker loop resistance high altitude test forceps of claim 1, wherein: The end of the brass plate (106) is provided with a reserved hole (107); the inner side of the reserved hole (107) is provided with a butterfly bolt (108).

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