CN216900635U - A hand-held electrode rod for rolling test - Google Patents

Abstract

The utility model relates to a hand-held electrode rod for rolling test, which belongs to the technical field of electric power detection equipment, and comprises an insulating rod, a support frame and two cylindrical electrode columns. one end of the insulating rod; the two electrode columns are rotatably arranged on the support frame, and the axis lines of the two electrode columns are parallel to each other; the middle part of the surface of the electrode column is provided with an arc-shaped groove; There are two measurement wires, and the two measurement wires bypass the support frame and contact the two electrode columns respectively. The surface of the two electrode columns and the arc-shaped grooves increase the convenience of the creeping resistance test for flat or rod-shaped insulating objects. With the rolling of the electrode columns, the test area is effectively increased, the test time is shortened, and the test efficiency is improved.

Description

A hand-held electrode rod for rolling test

technical field

The utility model belongs to the technical field of electric power detection equipment, in particular to a hand-held electrode rod for rolling test.

Background technique

At present, the commonly used creeping resistance tester is "megohmmeter + hand-held fixed electrode rod". Hold the handle of the electrode rod and use the contact tip to touch the surface of the tool to achieve the purpose of measurement.

The shortcomings of the current measurement method are: when the electrode rod measures the creeping resistance, it can only be measured at a point, the measurement range covers a small area of the insulating tool, and the measurement time is long.

Utility model content

In order to solve the problems of small measurement area and long measurement time in the prior art along surface resistance test, the utility model provides a hand-held electrode rod for rolling test.

The utility model is achieved through the following technical solutions:

A hand-held electrode rod for rolling test, comprising an insulating rod, a support frame and two cylindrical electrode columns, the support frame is rotatably arranged on one end of the insulating rod through a second hinge; the two electrode columns are rotatably arranged On the support frame, the axis lines of the two electrode columns are parallel to each other; the middle part of the surface of the electrode column is provided with an arc-shaped groove; the insulating rod has two measuring wires running through it, and the two measuring wires are wound around. The two electrode columns are in contact with each other through the support frame.

The surface of the two electrode columns and the arc-shaped grooves increase the convenience of the creeping resistance test for flat or rod-shaped insulating objects. With the rolling of the electrode columns, the test area is effectively increased, the test time is shortened, and the test efficiency is improved.

A further improvement of the present invention is that the distance between the tangent points between the two electrode columns is 2cm, and the distance between the tangent points of the two arc-shaped grooves is 2cm. In order to ensure that when in contact with the insulating object to be tested, the contact points on the two electrode columns always maintain a fixed distance to ensure the accuracy of the test.

A further improvement of the present invention is that the above-mentioned support frame includes a main board and an auxiliary board, the main board is mounted on the insulating rod, the end of the auxiliary board facing away from the insulating rod is connected to the main board through a first hinge, and the auxiliary board is connected to the main board through a first hinge. One end of the plate close to the insulating rod is connected with the main plate through an insulating spring; the two electrode columns are rotatably arranged on the side of the auxiliary plate away from the main plate. Under the action of the insulating spring, the rear end of the sub-board is separated from the main board to form an included angle. When the insulating rod and the insulating object to be tested have a large included angle, always ensure that the two electrode columns are in contact with the insulating object to be tested, so as to improve the Operator convenience.

A further improvement of the present invention is that the above-mentioned first hinge member is rotatably arranged on the main board. The auxiliary plate can be rotated relative to the main plate through the first hinge part, so that when there is an included angle between the insulating rod and the traveling direction of the electrode column, a good operation effect can still be formed.

A further improvement of the present invention is that a baffle plate is provided at one end of the main board near the insulating rod. The structural strength of the rear end of the motherboard is increased by the setting of the baffle.

A further improvement of the present invention is that the side of the support frame facing away from the electrode column is provided with a guide groove for the measurement wire to be laid out, and a fixing card for fixing the measurement wire is arranged on the guide groove. By embedding the measuring lead in the guide groove and fixing it with the fixing card, the measuring lead passing through the support frame is organized.

A further improvement of the present invention is that the above-mentioned insulating rod is embedded with a support tube for the measuring wire to pass through. Increase the support strength of the insulating rod through the support tube.

It can be seen from the above technical solutions that the beneficial effects of the present invention are: the surface of the two electrode columns and the arc-shaped grooves are used to increase the testing convenience of the creeping resistance of a plane or rod-shaped insulating object. It effectively increases the test area, shortens the test time, and improves the test efficiency.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the accompanying drawings required in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are very important in the art. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a first structural schematic diagram of a specific embodiment of the present invention.

FIG. 2 is a second structural schematic diagram of a specific embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a support frame according to a specific embodiment of the present invention.

4 is a partial schematic diagram of an insulating rod according to a specific embodiment of the present invention.

5 is a schematic cross-sectional view of an electrode column according to a specific embodiment of the present invention.

In the drawings: 1, insulating rod, 11, support tube, 2, measuring wire, 3, support frame, 31, main board, 32, auxiliary board, 33, insulating spring, 34, second hinge piece, 35, baffle plate, 36. The first hinge, 37, the guide groove, 38, the fixing card, 4, the electrode column, 41, the arc groove.

Detailed ways

In order to make the purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be described clearly and completely below in conjunction with the accompanying drawings in the specific embodiments. Obviously, the following description The embodiments described above are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

As shown in the drawings, a hand-held electrode rod for rolling test includes an insulating rod 1 , a support frame 3 and two cylindrical electrode columns 4 , and the support frame 3 is rotatably arranged on one end of the insulating rod 1 . The angle between the support frame 3 and the insulating rod 1 can be adjusted according to the position of the insulating object to be tested and the operator, so as to achieve the optimum angle for operation.

Specifically, the support frame 3 includes a main board 31 and a sub-board 32. The main board 31 is hinged to the insulating rod 1 through a second hinge 34. During the rotating operation, the movement track of the axis line of the insulating rod 1 is related to the main board. The moving trajectory of the central axis of 31 is in the same vertical plane. A baffle plate 35 is provided at one end of the main board 31 close to the insulating rod 1 . The structural strength of the rear end of the main board 31 is increased by the arrangement of the baffle 35 .

One end of the auxiliary plate 32 facing away from the insulating rod 1 is connected to the main plate 31 through a first hinge member 36 . The first hinge member 36 is rotatably disposed on the main board 31 . The auxiliary plate 32 can be rotated relative to the main plate 31 through the first hinge member 36 , so that when there is an included angle between the traveling direction of the insulating rod 1 and the electrode column 4 , a good operation effect can still be formed. One end of the sub-plate 32 close to the insulating rod 1 is connected to the main plate 31 through an insulating spring 33 ; Under the action of the insulating spring 33, the rear end of the sub-plate 32 is separated from the main plate 31 to form an included angle. When the insulating rod 1 and the insulating object to be tested have a large included angle, it is always ensured that the two electrode columns 4 are connected to the insulating object to be tested. contact, in order to improve the operator's convenience.

The two electrode columns 4 are rotatably arranged on the sub-plate 32, and the axis lines of the two electrode columns 4 are parallel to each other; the middle part of the surface of the electrode column 4 is provided with an arc-shaped groove 41; The distance between the tangent points is 2cm, and the distance between the tangent points of the two arc-shaped grooves 41 is 2cm. In order to ensure that when in contact with the insulating object to be tested, the contact points on the two electrode columns 4 always maintain a fixed distance to ensure the accuracy of the test.

The auxiliary plate 32 is provided with a lug plate supporting the electrode column 4, and the electrode column 4 is arranged on the lug plate through a pin.

In the initial position, the axis lines of the two electrode columns 4 are both perpendicular to the axis line of the insulating rod 1 .

There are two measuring wires 2 running through the insulating rod 1 , and the two measuring wires 2 bypass the main board 31 and contact the two electrode columns 4 respectively. The insulating rod 1 is embedded with a support tube 11 through which the measurement wire 2 passes. The support strength of the insulating rod 1 is increased by the support tube 11 .

The side of the support frame 3 facing away from the electrode column 4 is provided with a guide groove 37 for the measuring lead 2 to be laid out. The guide groove 37 is provided with a fixing card 38 for fixing the measuring lead 2 . By inserting the measuring lead 2 into the guide groove 37 and fixing it by the fixing card 38 , the measuring lead 2 passing through the support frame 3 is organized.

One end of the two measurement wires 2 close to the electrode column 4 is connected with the pins on the two electrode columns 4 respectively, and the other end is connected with the megohmmeter. One of the two measurement wires 2 is connected to the positive pole of the megohmmeter, and the other The root is connected to the negative terminal of the megohmmeter. The voltage of the megohmmeter is 2500V.

The measuring person operates the insulating rod 1 to adjust the angle between the main board 31 and the insulating rod 1 in advance according to the position of the insulating object to be measured, and under the action of the insulating spring 33, the two electrode columns 4 and the insulating object to be measured are always kept at the same time. contact to measure the resistance along the surface.

The main board 31 , the auxiliary board 32 , the first hinge piece 36 , the second hinge piece 34 , the ear plate and the baffle 35 are all insulating materials. to ensure the accuracy of the measurement results.

In the actual operation process, the most commonly used and most of the rod-shaped insulating objects to be tested are 4cm in diameter. Therefore, take a rod-shaped insulating object with a diameter of 4cm as an example:

The length of the electrode column ₄ in the axial direction, that is, L1, is 3.92 cm;

The axial length of the portion of the arc-shaped groove 41 that can be in contact with the plane insulating object on both sides, that is, L ₂ , is 1 cm;

The arc length of the arc-shaped groove 41 in the axial direction of the electrode column 4, that is, L ₃ is 2 cm; the central angle corresponding to the arc-shaped groove 41 is 1 radian;

The depth of the arc groove 41 in the radial direction of the electrode column ₄ , that is, L4, is 0.24 cm;

The length of the arc groove 41 in the axial direction of the electrode column ₄ , that is, L5, is 1.92 cm;

The edges at both ends of the electrode column 4 are chamfered, and the thickness of the edge at the chamfered position, that is, L ₆ , is 0.1 cm;

In order to achieve that the arc groove 41 can improve the fit with the rod-shaped insulating object when testing the rod-shaped insulating object with a diameter of 4 cm. The chamfered edges at both ends of the electrode post 4 avoid abrasion when in contact with flat insulating objects.

The hand-held electrode rod for rolling test according to the utility model increases the testing convenience of the creeping resistance of plane or rod-shaped insulating objects through the surfaces of the two electrode columns and the arc-shaped grooves, and effectively increases with the rolling of the electrode columns. The test area is reduced, the test time is shortened, and the test efficiency is improved.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other.

The terms "upper", "lower", "outside", "inside", etc. in the description and claims of the present utility model and the above drawings, if present, are used to distinguish the relative relationship in position, and need not be qualitatively defined. It is to be understood that the data so used may be interchanged under appropriate circumstances so that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The handheld electrode bar for the rolling test is characterized by comprising an insulating rod (1), a support frame (3) and two cylindrical electrode columns (4), wherein the support frame (3) is rotatably arranged at one end of the insulating rod (1) through a second hinge component (34); the two electrode columns (4) are rotatably arranged on the support frame (3), and the axial leads of the two electrode columns (4) are parallel to each other; the middle part of the surface of the electrode column (4) is provided with an arc-shaped groove (41); two measuring wires (2) penetrate through the insulating rod (1), and the two measuring wires (2) bypass the support frame (3) and the two electrode columns (4) to be respectively contacted.

2. The rolling test hand-held electrode bar according to claim 1, characterized in that the distance between the tangents of the two electrode columns (4) is 2cm and the distance between the tangents of the two arc-shaped grooves (41) is 2 cm.

3. The rolling test handheld electrode rod is characterized in that the support frame (3) comprises a main plate (31) and a secondary plate (32), the main plate (31) is mounted on the insulating rod (1), one end of the secondary plate (32) away from the insulating rod (1) is connected with the main plate (31) through a first hinge piece (36), and one end of the secondary plate (32) close to the insulating rod (1) is connected with the main plate (31) through an insulating spring (33); the two electrode columns (4) are rotatably arranged on one surface of the auxiliary plate (32) departing from the main plate (31).

4. A roll testing hand-held electrode rod according to claim 3, characterized in that the first hinge member (36) is pivotally arranged on the main plate (31).

5. A roll testing hand-held electrode rod according to claim 3, characterized in that the main plate (31) is provided with a baffle (35) near one end of the insulating rod (1).

6. The rolling test handheld electrode rod is characterized in that one surface, away from the electrode column (4), of the support frame (3) is provided with a guide groove (37) for arranging the measuring lead (2), and a fixing clamp (38) for fixing the measuring lead (2) is arranged on the guide groove (37).

7. A roll testing hand-held electrode rod according to claim 1, characterized in that a support tube (11) for a measuring wire (2) to pass through is embedded in the insulating rod (1).

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