CN218938321U - Detachable duckbilled contact resistance test wire - Google Patents

Abstract

The utility model provides a detachable duckbill contact resistance test wire, which comprises an upper clamping plate, wherein the bottom of the upper clamping plate is connected with a lower clamping plate, one surface of the upper clamping plate, which is close to the lower clamping plate, is provided with an upper contact piece, one surface of the lower clamping plate, which is close to the upper clamping plate, is provided with a lower contact piece, a rear connecting wire and a front connecting wire are connected by adopting a threaded loop bar and a threaded rod, the rear connecting wire and the front connecting wire are detachably connected, and can adopt proper wire clamps for different switch devices.

Description

Detachable duckbilled contact resistance test wire

Technical Field

The utility model relates to the technical field of power transmission and transformation switch equipment testing wires, in particular to a detachable duckbill contact resistance testing wire.

Background

Loop resistance: is a parameter that characterizes whether the coupling of the conductive loop is good, and each type of product specifies a range of values. If the loop resistance exceeds a specified value, the contact of a certain connecting part of the conductive loop is likely to be poor, and the loop resistance of the circuit breaker is as follows: the contact resistance between the movable contact and the fixed contact of the circuit breaker is mainly determined, and the resistance value of a loop of many high-current electrical equipment of a power system needs to be accurately measured in preventive tests and handover tests. The circuit breaker is an important electrical device of a power system, the good contact of a conductive loop of the circuit breaker is an important condition for ensuring the safe operation of the circuit breaker, and according to the requirements of preventive test regulations of the power device and the standards of the power industry, the resistance of the conductive loop of various switch devices is tested, and the expected test current is not less than 100A.

The test line of a general loop resistance tester generally has the following problems: firstly, the device is connected with equipment to be detected in a clamping mode, the current reaches 100A in the testing process, and a large operation risk exists; secondly, the current output line is overlapped with the voltage measurement line, the contact of the clamping surface of the voltage measurement line cannot be ensured, and a larger measurement error is generated; thirdly, the test line is longer, the sectional area of the lead is small, and the measuring loop is suddenly disconnected in the measuring process, so that the measuring line falls off, and an instrument is damaged; and fourthly, the contact area of the test wire clamp and the tested equipment is small, and the influence of an oxide film in a conductive loop on a test result cannot be reduced, so that test false data are generated.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a detachable duckbill contact resistance test wire.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a can dismantle duckbill contact resistance test wire, includes the punch holder, the bottom of punch holder is connected with the lower plate, the one side that the punch holder is close to the lower plate is provided with the contact, the one side that the lower plate is close to the punch holder is provided with the contact down, one side that goes up contact and contact down all is provided with the test wire, the test wire is kept away from the one end of contact and contact down and is connected with the front end connecting wire, the other end of front end connecting wire is connected with the rear end connecting wire, the one end that the front end connecting wire is close to the rear end connecting wire is provided with the threaded rod, the one end that the rear end connecting wire is close to the front end connecting wire is provided with the screw thread loop bar.

Preferably, a connecting shaft rod is connected between the upper clamping plate and the lower clamping plate, and a torsion spring is arranged between the upper clamping plate and the lower clamping plate on the side wall of the connecting shaft rod.

Preferably, the outer side wall of the threaded rod is in threaded connection with the inner side wall of the threaded sleeve rod.

Preferably, the test wire is electrically connected with the front connecting wire, and the test wire is electrically connected with the upper contact piece and the lower contact piece.

Preferably, a limiting piece is arranged on the side part of the upper clamping plate, opposite to the lower clamping plate, located on the test line, and a limiting block is arranged on one side of the limiting piece.

Preferably, through holes matched with the test lines are formed in the side walls of the limiting pieces and the limiting blocks.

Preferably, an anti-skid sleeve is arranged at one end of the upper clamping plate and the lower clamping plate, which is close to the front-end connecting wire.

Advantageous effects

In the utility model, the rear connecting wire and the front connecting wire are connected by adopting the threaded loop bar and the threaded rod, the rear connecting wire and the front connecting wire are detachably connected, and suitable wire clamps can be adopted for different switch devices.

In the utility model, the wire clamp is designed into a duckbill shape, so that the wire clamp is fully contacted and meshed with the switch equipment, thereby acquiring accurate test data of the switch equipment, fundamentally improving the test accuracy and unnecessary power failure maintenance, and shortening the power failure time.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

fig. 3 is a schematic diagram of the structure of fig. 1 a according to the present utility model.

Legend description:

1. an upper clamping plate; 2. a lower clamping plate; 3. an upper contact; 4. a lower contact; 5. a connecting shaft lever; 6. an anti-skid sleeve; 7. a test line; 8. a front end connecting wire; 9. a rear connecting wire; 10. a threaded rod; 11. a threaded sleeve rod; 12. a limiting piece; 13. a limiting block; 14. and (3) a torsion spring.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Specific embodiments of the present utility model are described below with reference to the accompanying drawings.

Specific examples:

referring to fig. 1-3, a detachable duckbill contact resistance test wire comprises an upper clamping plate 1, a lower clamping plate 2 is connected to the bottom of the upper clamping plate 1, an upper contact piece 3 is arranged on the surface, close to the lower clamping plate 2, of the upper clamping plate 1, a lower contact piece 4 is arranged on the surface, close to the upper clamping plate 1, of the lower clamping plate 2, test wires 7 are arranged on one sides of the upper contact piece 3 and the lower contact piece 4, one ends, far away from the upper contact piece 3 and the lower contact piece 4, of the test wires 7 are connected with a front end connecting wire 8, the other ends of the front end connecting wires 8 are connected with a rear end connecting wire 9, one ends, close to the rear end connecting wire 9, of the front end connecting wire 8 are provided with threaded sleeves 11, the test wires 7, the front end connecting wire 8 and the rear end connecting wire 9 are wrapped by insulating outer skins, the test wires 7, the front end connecting wire 8 and the rear end connecting wire 9 are ensured to be wear-resistant, the upper contact element 3 and the lower contact element 4 are used for connecting the movable contact and the static contact of tested equipment, namely, a current wire is clamped at the outer side of the tested product, a voltage wire is clamped at the inner side of the tested product, the current and the voltage have the same polarity, a rear connecting wire 9 is used for connecting a testing instrument, a connecting shaft lever 5 is connected between the upper clamping plate 1 and the lower clamping plate 2, a torsion spring 14 is arranged between the upper clamping plate 1 and the lower clamping plate 2 on the side wall of the connecting shaft lever 5, the two sides of the tested product can be clamped through the torsion spring 14, the situation that the upper clamping plate 1 and the lower clamping plate 2 fall off is avoided, the outer side wall of a threaded rod 10 is in threaded connection with the inner side wall of a threaded sleeve rod 11, the threaded connection can be used for more sliding testing instruments with different testing models, the testing wire 7 is in electric connection with a front connecting wire 8, the testing wire 7 is in electric connection with the upper contact element 3 and the lower contact element 4, the one side that punch holder 1 and lower plate 2 are relative is provided with spacing piece 12 in the lateral part of test wire 7, and one side of spacing piece 12 is provided with stopper 13, and spacing piece 12 and stopper 13's lateral wall have seted up with test wire 7 assorted through-hole, and spacing piece 12 and stopper 13 can play spacing effect to test wire 7, avoid test wire 7 to drop, influence normal work, and punch holder 1 and lower plate 2 are close to front end connecting wire 8's one end is provided with anti-skidding cover 6, and anti-skidding cover 6 is insulating rubber material, can avoid the personnel to appear skidding at operation punch holder 1 and lower plate 2, has promoted the security of use.

The working principle of the utility model is as follows: the rear connecting wire 9 is connected with the front connecting wire 8 through the threaded sleeve rod 11 and the threaded rod 10, the rear connecting wire 9 is connected with the front connecting wire 8 through the electric wires, the rear connecting wire 9 is connected with the front connecting wire 8 through the detachable connection mode, suitable wire clamps can be adopted for different switch equipment, in addition, the weight of the test wire 7 is optimized, the test wire 7 is prevented from falling higher than the falling test wire 7, the rear connecting wire 9 and the front connecting wire 8 can continuously output large current for a long time, a switch contact oxide film is effectively broken down, false data are prevented from being generated, the upper clamping plate 1 is close to the lower clamping plate 2 and is designed into a duckbilled shape, and the duckbilled shape is fully contacted and meshed with the switch equipment, so that accurate test data of the switch equipment are acquired, the test accuracy and unnecessary power outage overhaul are fundamentally promoted, and the power outage duration is shortened.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. A detachable duckbill contact resistance test wire, comprising an upper clamping plate (1), characterized in that: the bottom of punch holder (1) is connected with lower plate (2), the one side that punch holder (1) is close to lower plate (2) is provided with contact (3), one side that lower plate (2) is close to punch holder (1) is provided with down contact (4), one side of upper contact (3) and lower contact (4) all is provided with test wire (7), one end that upper contact (3) and lower contact (4) were kept away from to test wire (7) is connected with front end connecting wire (8), the other end of front end connecting wire (8) is connected with rear end connecting wire (9), one end that front end connecting wire (8) is close to rear end connecting wire (9) is provided with threaded rod (10), one end that rear end connecting wire (9) is close to front end connecting wire (8) is provided with screw thread loop bar (11).

2. A detachable duckbill contact resistance test wire according to claim 1, wherein: a connecting shaft rod (5) is connected between the upper clamping plate (1) and the lower clamping plate (2), and a torsion spring (14) is arranged between the upper clamping plate (1) and the lower clamping plate (2) on the side wall of the connecting shaft rod (5).

3. A detachable duckbill contact resistance test wire according to claim 1, wherein: the outer side wall of the threaded rod (10) is in threaded connection with the inner side wall of the threaded sleeve rod (11).

4. A detachable duckbill contact resistance test wire according to claim 1, wherein: the test wire (7) is electrically connected with the front end connecting wire (8), and the test wire (7) is electrically connected with the upper contact piece (3) and the lower contact piece (4).

5. A detachable duckbill contact resistance test wire according to claim 1, wherein: one side of the upper clamping plate (1) opposite to the lower clamping plate (2) is provided with a limiting piece (12) at the side part of the test line (7), and one side of the limiting piece (12) is provided with a limiting block (13).

6. A removable duckbill contact resistance test wire according to claim 5, wherein: and through holes matched with the test lines (7) are formed in the side walls of the limiting pieces (12) and the limiting blocks (13).

7. A detachable duckbill contact resistance test wire according to claim 1, wherein: and an anti-skid sleeve (6) is arranged at one end, close to the front end connecting wire (8), of the upper clamping plate (1) and the lower clamping plate (2).

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