CN113138301A

CN113138301A - Special high-altitude wiring clamp for loop resistance test

Info

Publication number: CN113138301A
Application number: CN202110432748.9A
Authority: CN
Inventors: 邵春; 谢珂; 李飞; 张辉; 金哲宇; 杨航康; 丁宇洁; 邓昭辉; 卢芳
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-07-20

Abstract

The invention discloses a special high-altitude jointing clamp for loop resistance testing, which comprises a jointing clamp body, wherein the jointing clamp body is provided with an insulated upper clamp seat, an insulated lower clamp seat and a driving mechanism for driving the upper clamp seat and the lower clamp seat to move relatively, the inner side surface of the upper clamp seat is provided with a left-right symmetrical conductive upper clamp jaw I and an upper clamp jaw II, the inner side surface of the lower clamp seat is provided with a conductive lower clamp jaw I and a conductive lower clamp jaw II which correspond to the upper clamp jaw I and the upper clamp jaw II, the upper clamp jaw I and the upper clamp jaw II are respectively connected with an upper conductive wiring terminal, and the first clamp jaw I and the lower clamp jaw II are respectively connected with a lower conductive wiring terminal. The upper part and the lower part of the jaw of the high-altitude jointing clamp are divided into two parts to form a current clamp and a voltage clamp, so that the loop resistance test can be realized, the high-altitude jointing clamp can also be used as a function of a common high-altitude jointing clamp to independently test the current clamp and the voltage clamp, the loop resistance measurement is not deteriorated, the measurement data is more accurate, and the clamping is more stable and reliable.

Description

Special high-altitude wiring clamp for loop resistance test

Technical Field

The invention relates to a special high-altitude wiring clamp for loop resistance testing, and belongs to the technical field of high-altitude wiring clamps.

Background

At present, high-altitude wiring clamps used in high-voltage tests have no problem in tests for auxiliary measurement of dielectric loss, time and speed parameters of a circuit breaker and the like, but when the circuit breaker loop resistance is measured in an auxiliary mode, the situations of inaccurate measured data and large deviation often occur. Through analysis, the cause of the large measurement deviation of the loop resistance is two: 1) according to the principle of measuring the loop resistance, a large current (50A, 100A, 150A and 200A) is added to a main loop in a closing state of a circuit breaker, the voltage of the main loop is measured, according to the measuring principle, a voltage measuring point is required to be arranged on the inner side of a current applying point (namely a voltage clamp is arranged on the inner side of a current clamp), but an upper clamping surface and a lower clamping surface of a high-altitude wiring clamp are arranged on the same plane, and the requirement that the voltage clamp is arranged on the inner side of the current clamp cannot be met no matter the upper end or the lower end of the high-altitude wiring clamp is connected with the current line or the voltage line; 2) the measured value of the loop resistance is in a mu omega level, the measurement is inaccurate due to slight looseness of the clamping force of the clamp, and the lower end clamping force of the high-altitude wiring clamp is easy to loosen under the action of gravity when the high-altitude wiring clamp is used from the structure and practical use experience of the high-altitude wiring clamp.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the high-altitude wiring clamp special for loop resistance testing is provided to solve the problems in the prior art.

The technical scheme adopted by the invention is as follows: the utility model provides a special high altitude jointing clamp of return circuit resistance test, including the jointing clamp body, the jointing clamp body is provided with insulating last pincers seat, insulating lower pincers seat and drive last pincers seat, the actuating mechanism of lower pincers seat relative motion, it is electrically conductive last pincers first and last pincers two to go up pincers seat medial surface to be provided with bilateral symmetry, lower pincers seat medial surface is provided with and last pincers first and last two electrically conductive lower pincers first and lower two of keeping silent that correspond, it is connected with an upper electrically conductive wiring end respectively to go up pincers first and last pincers two equally divide, it is connected with a lower electrically conductive wiring end respectively to keep silent one and lower two equally divide.

Preferably, the first upper jaw and the second upper jaw are isolated by an upper insulating plate made of polytetrafluoroethylene and having a thickness of 2 mm.

Preferably, the first lower jaw and the second lower jaw are isolated by a lower insulating plate made of polytetrafluoroethylene and having a thickness of 2 mm.

Preferably, the first upper jaw and the second upper jaw are respectively connected with the first lower jaw and the second lower jaw through detachable parallel wires.

Preferably, the wiring clamp body is connected to the insulating telescopic rod.

Preferably, the upper end of the insulating telescopic rod is connected to the jointing clamp body through an angle adjusting mechanism.

Preferably, the clamping surfaces of the first upper jaw, the second upper jaw, the first lower jaw and the second lower jaw are all provided with a tooth-shaped structure.

Preferably, the outer ends of the upper forceps base and the lower forceps base are respectively provided with two symmetrical arc-shaped guide pieces.

The invention has the beneficial effects that: compared with the prior art, the upper part and the lower part of the jaw of the high-altitude jointing clamp are divided into two parts to form a current clamp and a voltage clamp, so that the loop resistance test can be realized, the high-altitude jointing clamp can also be used as a function of a common high-altitude jointing clamp, the current clamp and the voltage clamp are independently tested, the loop resistance measurement variation cannot be caused, the measurement data is more accurate, and the clamping is more stable and reliable.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a jaw structure.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

Example 1: as shown in figures 1-2, a special high-altitude jointing clamp for loop resistance test comprises a jointing clamp body 1, wherein the jointing clamp body 1 is provided with an insulated upper clamp seat 2, an insulated lower clamp seat 3 and a driving upper clamp seat 2, the driving mechanism for the relative movement of the lower plier base 3 is characterized in that an upper jaw I4 and an upper jaw II 5 which are bilaterally symmetrical and conductive are arranged on the inner side surface of an upper plier base 2, a lower jaw I6 and a lower jaw II 7 which are conductive and correspond to the upper jaw I4 and the upper jaw II 5 are arranged on the inner side surface of the lower plier base 3, the upper jaw I4 and the upper jaw II 5 are respectively connected with an upper conductive wiring terminal 8, the jaw I6 and the lower jaw II 7 are respectively connected with a lower conductive wiring terminal 9, the loop resistance test special high-altitude jointing clamp is improved for a TH-1186 multifunctional high-altitude jointing clamp, and the working principle is the same as that of the TH-1186 multifunctional high-altitude jointing clamp.

Preferably, the upper jaw I4 and the upper jaw II 5 are isolated by an upper insulating plate 10 made of polytetrafluoroethylene and having a thickness of 2mm, so that the upper jaw I and the upper jaw II can be isolated in an insulating manner, and mutual interference can be avoided.

Preferably, the lower jaw I6 and the lower jaw II 7 are isolated by a lower insulating plate 11, so that the lower jaws can be isolated in an insulating manner, and mutual interference can be avoided.

Preferably, the upper jaw I4 and the upper jaw II 5 are respectively connected with the lower jaw I6 and the lower jaw II 7 by detachable parallel wires 12, so that the measuring points are at the same potential, and the measurement is more accurate.

Preferably, above-mentioned wiring pincers body 1 is connected on insulating telescopic link 13, and the transportation is convenient for accomodate in the operation of insulating telescopic link to can realize length control as required, do benefit to and use the not use of co-altitude.

Preferably, the upper end of the insulating telescopic rod 13 is connected to the jointing clamp body 1 through an angle adjusting mechanism, so that the direction of the jaw is convenient to adjust, and the insulating telescopic rod is suitable for clamping at clamping positions in different directions.

Preferably, the clamping surfaces of the upper jaw I4, the upper jaw II 5, the lower jaw I6 and the lower jaw II 7 are all in a tooth-shaped structure, so that the tooth-shaped structure is more reliable in clamping, better in clamping stability and better in conductivity.

Preferably, the above-mentioned 2 outer ends of pincers seats of going up and 3 outer ends of pincers seats of lower pincers are provided with two arc guide pieces of symmetry respectively, are convenient for go into the quick card of keeping silent by the centre gripping position, improve efficiency of software testing and installation effectiveness, and the arc guide piece has the flexibility, can play the buffering elastic action, avoids damaging the centre gripping position of touching.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.

Claims

1. The utility model provides a special high altitude wiring pincers of return circuit resistance test which characterized in that: the wiring clamp comprises a wiring clamp body (1), wherein the wiring clamp body (1) is provided with an insulated upper clamp seat (2), an insulated lower clamp seat (3) and a driving mechanism for driving the upper clamp seat (2) and the lower clamp seat (3) to move relatively, the inner side surface of the upper clamp seat (2) is provided with a left-right symmetrical conductive upper clamp jaw I (4) and an upper clamp jaw II (5), the inner side surface of the lower clamp seat (3) is provided with a conductive lower clamp jaw I (6) and a conductive lower clamp jaw II (7) corresponding to the upper clamp jaw I (4) and the upper clamp jaw II (5), the upper clamp jaw I (4) and the upper clamp jaw II (5) are respectively connected with an upper conductive wiring end (8), and the clamp jaw I (6) and the lower clamp jaw II (7) are respectively connected with a lower conductive wiring end (.

2. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the upper jaw I (4) and the upper jaw II (5) are isolated by an upper insulating plate (10).

3. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the lower jaw I (6) and the lower jaw II (7) are isolated by a lower insulating plate (11).

4. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the upper jaw I (4) and the upper jaw II (5) are respectively connected with the lower jaw I (6) and the lower jaw II (7) by detachable parallel wires (12).

5. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the wiring clamp body (1) is connected to the insulating telescopic rod (13).

6. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the upper end of the insulating telescopic rod (13) is connected to the jointing clamp body (1) through an angle adjusting mechanism.

7. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the clamping surfaces of the upper jaw I (4), the upper jaw II (5), the lower jaw I (6) and the lower jaw II (7) are all in a tooth-shaped structure.

8. The special high-altitude jointing clamp for loop resistance testing according to claim 1, wherein: the outer ends of the upper clamp seat (2) and the lower clamp seat (3) are respectively provided with two symmetrical arc-shaped guide sheets.