KR100835390B1 - Apparatus for measuring insulation resistance - Google Patents

Abstract

The present invention relates to an insulation resistance measuring apparatus capable of more easily configuring an insulation resistance measuring apparatus used for measuring insulation resistance of an electrical steel sheet, and capable of performing insulation resistance measuring operations more precisely and efficiently. Measuring terminals; And a first body portion for fixing the plurality of insulation resistance measurement terminals, wherein an upper portion of the first body portion is provided with a recess having a predetermined thickness and a width, and the first body is formed from a surface of the recess. A plurality of holes are formed through the bottom surface of the body portion to insert the plurality of insulation resistance measurement terminals, and a groove is formed in each of the plurality of insulation resistance measurement terminals, and is fitted into the groove to fit the surface of the recess. Provided is an insulation resistance measuring apparatus, characterized in that a stop member is formed to fix each of the plurality of insulation resistance measurement terminals.

Insulation resistance measurement, stop member, drill

Description

Apparatus for measuring insulation resistance

1 and 2 are an external perspective view and a plan view of an embodiment of an insulation resistance measuring apparatus according to the present invention;

3 is a cross-sectional view of the insulation resistance measuring apparatus according to the present invention,

4 is a perspective view showing an insulation resistance measuring terminal;

5 is a plan view of the stop member,

6 and 7 are views for explaining a process of the insulation resistance measuring device in contact with the electrical steel sheet,

8 and 9 are views for explaining the shape of the drill portion.

<Description of Signs of Major Parts of Drawings>

10 ... the first body part,

20 second body,

30 third body,

40 ... insulation resistance measuring terminal,

50 ...

60.Power terminal support rod

The present invention relates to an insulation resistance measuring apparatus, which can more easily configure an insulation resistance measuring apparatus used for measuring insulation resistance for insulation characteristics, which is a major quality characteristic of electrical steel sheet, and more accurately and efficiently. It relates to an insulation resistance measuring apparatus that can be performed.

Electrical steel is a product coated with a cold rolled steel sheet or hot rolled steel sheet, for example, zinc to increase the corrosion resistance, and generally has a smaller coating adhesion amount, uniformity, and smoothness than hot-dip galvanized steel sheet, and thus has excellent paint finish and corrosion resistance after painting. Since the plating process is close to room temperature and the material characteristics of the original can be maintained, the material selection is wide and the processability is excellent. In addition, compared to hot-dip galvanized steel sheet, the mechanical properties of the original plate can be maintained as it is, and the amount of adhesion can be easily controlled by the current density and line speed, so that the coating layer can be alloyed, composited, multilayered, and thinned. It is widely used.

As an important quality characteristic of such an electric steel sheet, an appropriate value of insulation resistance is required, and it is also an important problem to properly configure and maintain an insulation resistance measuring apparatus for measuring the insulation resistance of an electrical steel sheet. Insulation resistance refers to the degree of difficulty of electrical conduction. Generally, the insulation resistance (Ω) is measured by inserting an electrode to the extent that it penetrates the coated surface of an electrical steel sheet, and applying a voltage to divide the voltage applied by the total current between the electrodes. This insulation resistance is a value including both volume resistance and surface resistance.

In the process of measuring the insulation resistance, the electrical steel sheet is put into the tray in a horizontal state, the electrode terminals are brought into contact with the electrical steel sheet, and then applied to the electrical steel sheet in a vertical direction by a cylinder or the like. It is made by measuring the insulation resistance by contacting the electrode terminal to the material inside to measure the current value by applying a voltage. In this case, an apparatus including an electrode terminal in contact with the electrical steel sheet is called an insulation resistance measuring apparatus. In the conventional insulation resistance measuring apparatus, a structure for supporting an electrode terminal and a structure for fixing the electrode terminal are very complicated and thus difficult to assemble. There was also a very cumbersome problem in maintenance.

The present invention is to solve the problems as described above, it is an object to provide an insulation resistance measuring device that can be easily installed and also easy to install the device because the assembly is simple.

The present invention to achieve the above object, a plurality of insulation resistance measuring terminal; And a first body portion for fixing the plurality of insulation resistance measurement terminals, wherein an upper portion of the first body portion is provided with a recess having a predetermined thickness and a width, and the first body is formed from a surface of the recess. A plurality of holes are formed through the bottom surface of the body portion to insert the plurality of insulation resistance measurement terminals, and a groove is formed in each of the plurality of insulation resistance measurement terminals, and is fitted into the groove to fit the surface of the recess. It is possible to provide an insulation resistance measuring apparatus, characterized in that the stop member for fixing each of the plurality of insulation resistance measurement terminals is formed to be.

In a preferred embodiment, the stop member may be a circular elastic member which is partially open.

In addition, a hole is formed in an upper end of each of the plurality of insulation resistance measurement terminals, and may further include a wire passing through the hole of each of the insulation resistance measurement terminals.

The apparatus may further include an elastic member coupled to a lower portion of each of the plurality of insulation resistance measuring terminals to maintain elasticity with the bottom surface of the first body part.

In addition, two second body parts spaced apart from both side ends of the first body portion; And a third body part disposed above the two second body parts.

In addition, two through holes penetrating the bottom surface is formed on the upper surface of the first body portion, each of the two through holes are connected to a power source is inserted into each of the two power terminal support rods for supporting the power supply terminal, Upper ends of the two power terminal support bars may be fixedly coupled to the third body part.

In addition, a lower end portion of the power terminal support rod may be provided with a drill portion for scraping the surface of the insulation resistance measurement target to a predetermined thickness or more.

Moreover, it is preferable that the cross section of the said drill part is horizontal.

Moreover, it is preferable that the width | variety of the horizontal cross section of the said drill part is 0.5 mm.

EMBODIMENT OF THE INVENTION Hereinafter, the preferred embodiment of the insulation resistance measuring apparatus by this invention is described in detail with reference to an accompanying drawing.

1 and 2 show an external perspective view and a plan view of an embodiment of the insulation resistance measuring apparatus according to the present invention.

1 and 2, the insulation resistance measuring apparatus of the present embodiment includes a plurality of insulation resistance measurement terminals 40, a first body part 10 fixing the plurality of insulation resistance measurement terminals 40, and And two second body parts 20 disposed spaced apart from both end portions of the first body part 10, and a third body part 30 disposed on the two second body parts 20. It is configured by.

The upper surface of the first body portion 10 is formed with a recess 50 having a predetermined thickness and width, the first body portion from the surface of the recess 50 to the bottom of the first body portion 10 A plurality of holes 70 penetrating through 10 are formed. A plurality of insulation resistance measuring terminals 40 are inserted into the plurality of holes 70, respectively.

Meanwhile, two through holes 80 penetrating a bottom surface of the first body part 10 are formed, and each of the two through holes 80 has a power terminal 61 connected to a power source to supply power. Two power terminal support rods 60 for supporting are inserted respectively. An upper end portion of the power terminal support rod 60 inserted into the two through holes 80 may be coupled to and fixed to the third body portion 30.

In addition, a drill portion 62 may be formed at a lower end of the power terminal supporting rod 60 to drill a coating material coated on the surface of the electrical steel sheet to be subjected to insulation resistance and to contact the inner surface of the electrical steel sheet to supply power.

When the lower ends of the plurality of insulation resistance measuring terminals 40 are in contact with the surface of the electrical steel sheet, a voltage is applied through the power supply terminal 61 by the drill portion 62 penetrating the coating material and in contact with the inner surface of the electrical steel sheet. The current value flowing on the surface of the electrical steel sheet is measured. To this end, each insulation resistance measuring terminal 40 is connected to a current value measuring device (not shown) by a separate cable (not shown).

On the other hand, a groove 54 (see FIG. 4) is formed on each of the plurality of insulation resistance measuring terminals 40 and is fitted to the groove 54 to be hung on the surface of the recess 50. A stop member 51 for fixing each of the insulation resistance measuring terminals 40 is formed. In addition, an elastic member 41 such as a spring is formed under each of the plurality of insulation resistance measurement terminals 40 to maintain elasticity of the insulation resistance measurement terminal 40 in the up and down direction together with the stop member 51. To be fixed.

In addition, holes 53 (refer to FIG. 4) are formed at upper ends of the plurality of insulation resistance measurement terminals 40, and wires 52 penetrating through the holes 53 are coupled to each other so that the insulation resistance measurement terminal 40 is formed. To prevent them from rotating.

3 is a cross-sectional view of the insulation resistance measuring apparatus according to the present invention as shown in FIG. 1 and FIG. 2, in which the insulation resistance measurement terminal 40 is coupled to the recess 50.

Referring to FIG. 3, a recess 50 having a predetermined depth and width is formed on a surface of the first body part 10, and a stop member fitted to a groove 54 of each insulation resistance measuring terminal 40. It can be seen that the insulation resistance measuring terminal 40 is fixed to the surface of the recess 50 by the 51.

4 is a perspective view illustrating the insulation resistance measuring terminal 40 described with reference to FIGS. 1 to 3.

Referring to FIG. 4, the insulation resistance measuring terminal 40 has a hole 53 for inserting the wire 52 in the upper end thereof, an elastic member 41 such as a spring, etc. is formed in the lower end thereof. It can be seen that the groove 54 is formed below the hole 53, and the stop member 51 is fitted into the groove 54.

FIG. 5 is a plan view of the stop member 51. Referring to FIG. 5, the stop member 51 is formed in a hollow hollow circular shape. The stop member 51 may be formed of a material such as a metal, a ceramic having a slight elasticity, and a space in which the groove 54 of the insulation resistance measuring terminal 40 is fitted is formed in an internal space.

Referring to the process of assembling the insulation resistance measuring device of this configuration is as follows.

First, each of the plurality of insulation resistance measuring terminals 40 is inserted into the plurality of holes 70 formed in the first body part 10. At this time, the elastic member 41 such as a spring comes into contact with the bottom surface of the first body portion 10. At this time, the distance between the groove 54 and the elastic member 41 is slightly smaller than the distance from the bottom of the first body portion 10 to the surface of the recess 50 in order to fix the insulation resistance measuring terminal 40. Is preferably. Therefore, after the insulation resistance measurement terminal 40 is inserted into the hole 70, a slight force is applied from the bottom of the first body portion 10 toward the surface (concave portion) so that the groove 54 is recessed 50. The stop member 51 is inserted after it comes out on the surface.

When the stop member 51 is inserted and no force is applied, the insulation resistance measuring terminal 40 is fixed to the first body part 10 while maintaining elasticity in the vertical direction by the elasticity of the elastic member 41.

Thereafter, in order to prevent the rotation of the insulation resistance measurement terminal 40, the wire 52 passes through the hole 52 formed in the upper end of the insulation resistance measurement terminal 40 and the wire 52 protruding from both ends is fixed. The lower surface of the insulation resistance measuring terminal 40 can be prevented from rotating.

In this state, the power terminal support rod 60 or the like is inserted, and the second body portion 20 is disposed at both ends of the first body portion 10, and then the third body portion 30 is disposed thereon. By assembling the power supply terminal support rod 60 to the body portion 30, the assembly of the insulation resistance measuring device is completed.

When a part of the component of the insulation resistance measuring apparatus needs to be replaced or reassembled, the reverse procedure of the above process can be performed to easily perform the replacement or reassembly of the components.

Meanwhile, the process of measuring the insulation resistance of the electrical steel sheet by the insulation resistance measuring apparatus having such a configuration will be described below with reference to FIGS. 6 to 7.

First, when the electrical steel sheet is injected into the lower portion of the insulation resistance measuring device, the insulation resistance measuring device is pressed in the direction of the electric steel plate material by, for example, a cylinder or the like, and the drill portion 62 of the insulation resistance measuring device is electrically connected as shown in FIG. It comes into contact with the surface of the steel sheet.

At this time, a force is applied to the drill portion 62 of the insulation resistance measuring device to penetrate the surface of the coating material coated on the surface of the electrical steel sheet according to the preset degree, and the drill portion 62 rotates to coat the electrical steel sheet. The surface is in contact with the inner surface of the electrical steel sheet as shown in FIG. The rotation operation of the drill part 62 is performed by the connected power terminal support rod 60, and the rotation operation may be performed by the rotation guide groove 90 and the guide pin not shown. Since the upper end of the power supply terminal support rod 60 is fixedly coupled to the third body portion 30, the power supply terminal support rod 60 and the drill portion 62 rotate together when a force is applied from the upper portion, thereby coating the coating material on the surface of the electrical steel sheet. The scraping operation can be performed. This operation is well known in the art and is not directly related to the present invention, and thus a detailed description thereof will be omitted.

As such, when the drill part 62 comes into contact with the inner surface of the electrical steel sheet, the insulation resistance measuring terminal 40 comes into contact with the surface of the electrical steel sheet, and is applied from an external power supply device through the power terminal 61. The voltage is applied to the electrical steel sheet through the drill part 62, and the electric current is transmitted to the current measuring device by a cable (not shown) connected by measuring a current flowing on the surface of the electrical steel sheet. The insulation resistance value can be obtained.

On the other hand, Figures 8 and 9 are views for explaining the detailed configuration of the drill portion 62, Figure 8 is a conventional drill portion and Figure 9 shows the form of a drill portion 62 of a form particularly suitable for the present invention will be.

9, the drill portion 62 used in the present invention is characterized in that the section in contact with the surface of the electrical steel sheet is horizontal with the surface of the electrical steel sheet. As shown in FIG. 9, when the cross section is horizontal with the surface of the electrical steel sheet, as shown in FIG. 9, more preferable results are obtained in the measurement of insulation resistance than in the case of the conventional drill part of FIG. 8. The width of is preferably about 0.5 mm.

Although the configuration of the present invention has been described above with reference to preferred embodiments of the present invention, the present invention is not limited to the above embodiments, and various modifications within the scope of the present invention with reference to the appended claims and drawings. Modifications may be possible.

According to the present invention, since the assembly is simple, it is possible to provide an insulation resistance measuring apparatus which is easy to install the device and can also easily perform maintenance.

Claims (9)

A plurality of insulation resistance measuring terminals; And a first body part fixing the plurality of insulation resistance measurement terminals. A concave portion having a predetermined thickness and width is formed on an upper surface of the first body portion, and a plurality of holes in which the plurality of insulation resistance measurement terminals are inserted are formed through a bottom surface of the first body portion from a surface of the concave portion, A groove is formed in an upper portion of each of the plurality of insulation resistance measurement terminals, and an insulation resistance measurement, characterized in that a stop member is fitted to the groove to be caught on the surface of the recess to fix each of the plurality of insulation resistance measurement terminals. Device. The method of claim 1, The stop member is an insulation resistance measuring device, characterized in that the circular elastic member of a part is open. The method of claim 1, A hole is formed in an upper end of each of the plurality of insulation resistance measuring terminals, and further comprising a wire passing through the hole of each of the plurality of insulation resistance measuring terminals. The method of claim 1, And an elastic member coupled to a lower portion of each of the plurality of insulation resistance measurement terminals to maintain elasticity with a bottom surface of the first body part. The method of claim 1, Two second body parts spaced apart from both end portions of the first body part; And Insulation resistance measuring apparatus further comprises a third body portion disposed on the two second body portion. The method of claim 5, Two through holes penetrating the bottom surface from the upper surface of the first body portion are formed, and each of the two through holes is inserted into each of the two power terminal support rods for supporting a power supply terminal for supplying power, Insulation resistance measuring apparatus characterized in that the upper end of the two power terminal support rods are fixed to the third body portion. The method of claim 6, Insulation resistance measuring device characterized in that the lower end of the power terminal support rod is formed with a drill for scraping the surface of the insulation resistance to be measured to a predetermined thickness or more. The method of claim 7, wherein Insulation resistance measuring device, characterized in that the cross section of the drill portion is horizontal. The method of claim 8, Insulation resistance measuring apparatus characterized in that the width of the horizontal cross section of the drill portion 0.5mm.

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