CN220455402U - Resistivity measurement auxiliary device and resistivity measurement equipment - Google Patents

Abstract

The embodiment of the utility model discloses a resistivity measurement auxiliary device and resistivity measurement equipment, wherein the resistivity measurement auxiliary device comprises: the shielding box comprises a first box body and a second box body which are mutually hinged; the measuring assembly comprises a measuring electrode, a protecting electrode and a high-voltage electrode, wherein the high-voltage electrode is movably arranged in the first box body, the measuring electrode is movably arranged in the second box body, the protecting electrode and the measuring electrode are concentrically arranged, and a sample to be measured is placed between the measuring electrode and the high-voltage electrode, so that after the first box body and the second box body are buckled, the measuring assembly is tightly attached to the sample to be measured. According to the resistivity measurement auxiliary device provided by the utility model, the measurement assembly is fixed on the shielding box, an operator does not need to manually install and put the resistivity measurement auxiliary device, the sample to be measured is only required to be placed on the measurement electrode and the protection electrode, and then the first box body and the second box body are buckled, so that the efficiency of placing the sample to be measured is improved, and the resistivity measurement efficiency is further improved.

Description

Resistivity measurement auxiliary device and resistivity measurement equipment

Technical Field

The present utility model relates to the technical field of resistivity measurement equipment, and more particularly, to a resistivity measurement assisting device and resistivity measurement equipment.

Background

The resistivity is an important physical parameter of the substance, and the accurate volume resistivity and surface resistivity play a vital role in the accuracy of the calculation results of the related designs. The high resistance meter is used as one of important instruments for measuring the volume resistivity of materials, is widely used for measuring the insulation resistance of insulating materials, electrical products and various components and parts, has the advantages of high measurement accuracy, stable performance, simplicity in operation and the like, but in the actual measurement process, as the measuring electrode generally adopts a three-electrode method, and the electrode generally needs to be manually installed and placed by an operator, the electrode position of the electrode cannot be accurately positioned, and the efficiency of placing a sample is influenced, so that the resistivity measurement efficiency is lower.

In addition, because the current passing through the insulating material is very small, the accuracy requirement is high, so that the requirements on the anti-interference performance of the measuring device are high, the influence of external interference on the measuring result needs to be avoided as much as possible, and the accuracy of the resistivity measurement of the insulating material is affected by small current loss.

Therefore, how to improve the resistivity measurement efficiency is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

Accordingly, an object of the present utility model is to provide an auxiliary device for resistivity measurement to improve resistivity measurement efficiency.

Another object of the present utility model is to provide a resistivity measuring apparatus having the above-mentioned resistivity measurement assisting device.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a resistivity measurement assist device, comprising:

the shielding box comprises a first box body and a second box body which are mutually hinged;

the measuring assembly comprises a measuring electrode, a protecting electrode and a high-voltage electrode, wherein the high-voltage electrode is movably arranged in the first box body, the measuring electrode is movably arranged in the second box body, the protecting electrode and the measuring electrode are concentrically arranged, and a sample to be measured is placed between the measuring electrode and the high-voltage electrode, so that after the first box body and the second box body are buckled, the measuring assembly is tightly attached to the sample to be measured.

Optionally, in the above-mentioned resistivity measurement auxiliary device, the high-voltage electrode is installed in the first box body through a fixing piece, and a first reset elastic piece is connected between the high-voltage electrode and the fixing piece, so that after the first box body and the second box body are buckled, the high-voltage electrode is tightly attached to the sample to be measured.

Optionally, in the above auxiliary device for resistivity measurement, the first elastic restoring member is a metal elastic sheet, a first end of the metal elastic sheet is connected to the fixing member, and a second end of the metal elastic sheet is connected to the high-voltage electrode.

Optionally, in the above-mentioned resistivity measurement assisting device, a first insulating plate is disposed in the first case, and a first opening through which the high-voltage electrode passes is formed in the first insulating plate.

Optionally, in the above resistivity measurement auxiliary device, a second insulating plate is disposed in the second case, a second opening through which the measurement electrode passes is provided on the second insulating plate, the protection electrode is fixed on the second insulating plate through an insulating column, a third insulating plate is disposed at an end of the insulating column, and the measurement electrode is movably connected on the third insulating plate.

Optionally, in the above-mentioned resistivity measurement auxiliary device, electroplated tin shielding electrode rings which are mutually communicated and are used for connecting with the ground wire connector are respectively arranged on two opposite surfaces on the third insulating plate.

Optionally, in the above resistivity measurement auxiliary device, the measurement electrode is provided with a plug portion, an insulating sleeve is disposed on the third insulating plate, the plug portion of the measurement electrode is plugged in the insulating sleeve, and a measurement terminal is disposed on the third insulating plate, and extends into the insulating sleeve and is electrically connected with the plug portion of the measurement electrode.

Optionally, in the above-mentioned resistivity measurement auxiliary device, the insulating sleeve includes the barrel and connects base on the barrel, the base sets up on the third insulation board, the outside of barrel is provided with the second elastic component that resets, just the first end of the second elastic component that resets with the measuring electrode is connected, the second end of the second elastic component that resets with the base is connected, so that when first box with after the second box lock, measuring electrode pastes tightly with the sample that awaits measuring.

Optionally, in the above-mentioned resistivity measurement assisting device, a resistivity change-over switch is provided on the outer side of the second case, the resistivity change-over switch is electrically connected with the measurement terminal through a wire, and the resistivity change-over switch is used for switching between volume resistivity measurement and surface resistivity measurement.

A resistivity measurement apparatus, comprising:

the high resistance meter is used for measuring the resistivity of the sample to be measured;

an auxiliary device connected to the high resistance meter by a wire, the auxiliary device being a resistivity measurement auxiliary device as described in any one of the above.

According to the resistivity measurement auxiliary device provided by the utility model, the problem that the electrode position cannot be accurately positioned is solved by fixing the measurement assembly on the shielding box. The high-voltage electrode is arranged in the first box body, the measuring electrode and the protecting electrode are arranged in the second box body, the protecting electrode and the measuring electrode are arranged concentrically, and meanwhile, a sample to be measured can be placed between the measuring electrode and the high-voltage electrode, so that after the first box body and the second box body are buckled, the measuring assembly is tightly attached to the sample to be measured, namely, the connection of the electrode and the sample to be measured is completed, and the resistivity of the sample to be measured can be measured through the high-resistance meter.

Compared with the resistivity measurement auxiliary device which is not adopted to measure the resistivity in the prior art, the resistivity measurement auxiliary device provided by the utility model has the advantages that the measurement assembly is fixed on the shielding box, an operator does not need to manually install and put the resistivity measurement auxiliary device, the sample to be measured is only required to be placed on the measurement electrode and the protection electrode, and then the first box body and the second box body are buckled, so that the problem that the electrode position cannot be accurately positioned is solved, the efficiency of placing the sample to be measured is improved, and the resistivity measurement efficiency is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only embodiments of the present application, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a resistivity measurement assisting apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration showing an exploded structure of an electrode according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of an exploded structure of an electrode according to an embodiment of the present utility model.

Wherein 1 is the shielding case, 2 is the mounting, 3 is first elastic component that resets, 4 is the wire, 5 is resistivity change over switch, 6 is high-voltage electrode, 7 is first insulation board, 8 is the guard electrode, 9 is the second insulation board, 10 is the measuring electrode, 11 is the insulated column, 12 is the insulating sleeve, 13 is the second elastic component that resets, 14 is the third insulation board, 15 is the electrotinning shielding electrode circle, 16 is the measuring terminal.

Detailed Description

The core of the utility model is to provide a resistivity measurement auxiliary device to improve resistivity measurement efficiency.

Another core of the present utility model is to provide a resistivity measuring apparatus having the above-described resistivity measurement assisting device.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

As shown in fig. 1, an embodiment of the present utility model discloses a resistivity measurement assisting apparatus including a shield case 1 and a measurement assembly. It should be noted that in the prior art, in the process of measuring the resistivity by adopting the high-resistance meter, since the measuring electrode generally adopts a three-electrode method, and the electrode generally needs to be manually installed and placed by an operator, the electrode position of the electrode cannot be accurately positioned, and the efficiency of placing a sample is affected, so that the resistivity measuring efficiency is low. In addition, because the current passing through the insulating material is very small, the accuracy requirement is high, so that the requirements on the anti-interference performance of the measuring device are high, the influence of external interference on the measuring result needs to be avoided as much as possible, and the accuracy of the resistivity measurement of the insulating material is affected by small current loss. According to the resistivity measurement auxiliary device disclosed by the embodiment of the utility model, the measurement assembly is fixed on the shielding box 1, an operator does not need to manually install and put the resistivity measurement auxiliary device, a sample to be measured is only required to be placed on the measurement electrode 10 and the protection electrode 8, and then the first box body and the second box body are buckled, so that the problem that the electrode position cannot be accurately positioned is solved, the efficiency of placing the sample to be measured is improved, and the resistivity measurement efficiency is further improved. Meanwhile, the shielding electrode ring is arranged to reduce current loss, and external environment interference can be prevented, so that the accuracy of resistivity measurement is improved.

Wherein, as shown in fig. 1, the shielding case 1 includes two sections hinged to each other, which are defined as a first case and a second case, respectively, for convenience of understanding. Specifically, the shielding box 1 adopts a rectangular metal box body, the first box body is the upper part of the rectangular metal box body, the second box body is the lower part of the rectangular metal box body, and the first box body and the second box body are hinged through a hinge shaft, so that the shielding box 1 can be switched between being opened and closed. When a sample to be measured is required to be placed or replaced, the shielding box 1 is opened, the first box body and the second box body are opened, and then the sample to be measured is placed on the measuring assembly; after the sample to be measured is placed, the first box body and the second box body are buckled, the shielding box 1 is closed at the moment, and resistivity measurement is carried out on the sample to be measured through the high resistance meter.

Further, as shown in fig. 1, the measuring assembly includes a measuring electrode 10, a protecting electrode 8 and a high-voltage electrode 6, the high-voltage electrode 6 is movably disposed in the first box, the measuring electrode 10 is movably disposed in the second box, the protecting electrode 8 and the measuring electrode 10 are concentrically disposed, and a sample to be measured is disposed between the measuring electrode 10 and the high-voltage electrode 6, so that after the first box and the second box are buckled, the measuring assembly is tightly adhered to the sample to be measured. Specifically, the high-voltage electrode 6 is connected with the high-voltage power supply connector through the lead 4, the protection electrode 8 is sleeved on the outer side of the measurement electrode 10, meanwhile, the protection electrode 8 is connected with the high-resistance meter connector, the measurement electrode 10 is connected with the high-resistance meter connector, a gap is reserved between the protection electrode 8 and the measurement electrode 10, the measurement electrode 10 can move along the axial direction of the measurement electrode 10, the high-voltage electrode 6 is movably arranged in the first box body, the high-voltage electrode 6 can also move along the axial direction of the high-voltage electrode 6, and therefore after the first box body and the second box body are buckled, the measurement of the resistivity of samples to be measured with different thicknesses is adapted. After the first box body and the second box body are buckled, the measuring electrode 10, the protecting electrode 8 and the high-voltage electrode 6 are tightly attached to the sample to be measured, and connection between the sample to be measured and the electrode can be completed. In the actual operation process of measuring resistivity, an operator only needs to place a sample to be measured on the measuring electrode 10 and the protecting electrode 8, and then the first box body and the second box body are buckled, so that the operation is simple and quick, compared with the traditional process of measuring the resistivity by adopting a high-resistance meter, the manual installation and electrode position placing process of the operator is avoided, the problem that the electrode position cannot be accurately positioned is solved, the placing efficiency of the sample to be measured is improved, and the resistivity measuring efficiency is further improved.

In a specific embodiment, when the resistivity of the sample to be measured is required, the shielding case 1 is opened, the first case and the second case are in an open state, the sample to be measured is placed on the measuring electrode 10 and the protecting electrode 8, then the first case and the second case are buckled, the measuring assembly is tightly attached to the sample to be measured, meanwhile, the shielding case 1 is closed, namely, the connection between the electrode and the sample to be measured is completed, and then the resistivity of the sample to be measured is measured through the high resistance meter. When the sample to be measured needs to be replaced, the shielding box 1 is only required to be opened, the sample to be measured is directly replaced, and the measuring steps are repeated.

According to the resistivity measurement auxiliary device provided by the utility model, the problem that the electrode position cannot be accurately positioned is solved by fixing the measurement assembly on the shielding box 1. The high-voltage electrode 6 is arranged in the first box, the measuring electrode 10 and the protecting electrode 8 are arranged in the second box, the protecting electrode 8 and the measuring electrode 10 are arranged concentrically, and meanwhile, a sample to be measured can be placed between the measuring electrode 10 and the high-voltage electrode 6, so that after the first box and the second box are buckled, the measuring assembly is tightly attached to the sample to be measured, namely, the connection of the electrode and the sample to be measured is completed, and the resistivity of the sample to be measured can be measured through the high-resistance meter.

Compared with the resistivity measurement auxiliary device which is not adopted to measure the resistivity in the prior art, the resistivity measurement auxiliary device provided by the utility model has the advantages that the measurement component is fixed on the shielding box 1, an operator does not need to manually install and put the resistivity measurement auxiliary device, a sample to be measured is only required to be placed on the measurement electrode 10 and the protection electrode 8, and then the first box body and the second box body are buckled, so that the problem that the position of the electrode cannot be accurately positioned is solved, the efficiency of placing the sample to be measured is improved, and the resistivity measurement efficiency is further improved.

Further, as shown in fig. 1, in a specific embodiment, the high-voltage electrode 6 is installed in the first box body through the fixing piece 2, and a first reset elastic piece 3 is connected between the high-voltage electrode 6 and the fixing piece 2, so that after the first box body and the second box body are buckled, the high-voltage electrode 6 is tightly attached to the sample to be tested. Specifically, the first reset elastic member 3 is a metal elastic sheet, a first end of the metal elastic sheet is connected with the fixing member 2, and a second end of the metal elastic sheet is connected with the high-voltage electrode 6. Simultaneously, be provided with first insulation board 7 in first box, first insulation board 7 passes through bolted connection with first box, and has seted up the first oral area that high-voltage electrode 6 passed on the first insulation board 7. When buckling the first box body, the high-voltage electrode 6 is in contact with the sample to be detected, the first box body is continuously pressed until the first box body and the second box body are completely buckled, at the moment, the sample to be detected applies upward force to the high-voltage electrode 6 (view angle of fig. 1), the metal elastic sheet is extruded upwards, and downward elastic force is generated to act on the high-voltage electrode 6, so that the high-voltage electrode 6 is tightly attached to the sample to be detected, the high-voltage electrode 6 is reliably connected with the sample to be detected, and meanwhile, the connection of samples with different thicknesses can be adapted. It should be noted that the first return elastic member 3 may also be an elastic member such as a spring, which is not described herein.

Further, as shown in fig. 2 and 3, in a specific embodiment, a second insulating plate 9 is disposed in the second box, the second insulating plate 9 is connected with the second box through a bolt, a second opening through which the measuring electrode 10 passes is formed on the second insulating plate 9, the protecting electrode 8 is fixed on the second insulating plate 9 through an insulating column 11, a third insulating plate 14 is disposed at an end of the insulating column 11, and the measuring electrode 10 is movably connected on the third insulating plate 14. For convenience of understanding, both ends of the insulating column 11 are defined as a first end and a second end, respectively, wherein the first end of the insulating column 11 fixes the guard electrode 8 to the second insulating plate 9 by screw connection to secure the position of the guard electrode 8. The second end of the insulating column 11 is connected with the third insulating plate 14 through a bolt, and meanwhile the measuring electrode 10 is movably connected on the third insulating plate 14 so as to ensure that the horizontal position of the measuring electrode 10 is fixed, and the measuring electrode 10 can move along the axial direction so as to adapt to samples with different thicknesses.

Further, the measuring electrode 10 is provided with a plugging portion, the third insulating plate 14 is provided with an insulating sleeve 12, the plugging portion of the measuring electrode 10 is plugged into the insulating sleeve 12, the third insulating plate 14 is provided with a measuring terminal 16, and the measuring terminal 16 extends into the insulating sleeve 12 and is electrically connected with the plugging portion of the measuring electrode 10. Specifically, the insulating sleeve 12 includes a barrel and a base connected to the barrel, the base is disposed on the third insulating plate 14, and the base is connected to the third insulating plate 14 through a bolt, a second reset elastic member 13 is disposed on the outer side of the barrel, wherein a first end of the second reset elastic member 13 is connected to the measuring electrode 10, and a second end of the second reset elastic member 13 is connected to the base, so that after the first box and the second box are buckled, the measuring electrode 10 is tightly attached to the sample to be measured. In this embodiment, the second restoring elastic member 13 is a spring, and the spring is sleeved on the outer side of the cylinder. When the second restoring elastic member 13 is in the initial state, i.e., the state of not receiving pressure, the measuring electrode 10 connected to the first end of the second restoring elastic member 13 is higher than the guard electrode 8, and the plugging portion of the measuring electrode 10 is not in contact with the bottom wall of the insulating sleeve 12. When the sample to be measured is placed on the measuring electrode 10, the first box body is buckled at the same time until the first box body and the second box body are completely buckled, at the moment, the second reset elastic piece 13 is compressed, the plug-in part of the measuring electrode 10 is contacted with the bottom wall of the insulating sleeve 12, the sample to be measured is contacted with the protective electrode 8, the measuring electrode 10 is tightly attached to the sample to be measured under the action of the elastic force of the second reset elastic piece 13, the reliable connection of the measuring electrode 10 and the sample to be measured is ensured, and meanwhile, the connection of samples with different thicknesses can be adapted.

In a specific embodiment, when the resistivity of the sample to be measured is required, the shielding case 1 is opened, at this time, the first case and the second case are in an open state, the sample to be measured is placed on the measuring electrode 10, and then the first case is buckled, so that the high-voltage electrode 6 contacts the sample to be measured, the first case is continuously pressed until the first case and the second case are completely buckled, at this time, the sample to be measured applies an upward force to the high-voltage electrode 6 (view angle of fig. 1), so that the first reset elastic piece 3 is extruded upwards, and simultaneously downward elastic force is generated to act on the high-voltage electrode 6, so that the high-voltage electrode 6 is tightly attached to the sample to be measured, and reliable connection between the high-voltage electrode 6 and the sample to be measured is ensured. Simultaneously, the second elastic reset piece 13 is compressed, the plug-in part of the measuring electrode 10 is contacted with the bottom wall of the insulating sleeve 12, the measuring electrode 10 is tightly attached to the sample to be measured under the action of the elastic force of the second elastic reset piece 13, and under the action of the elastic force of the first elastic reset piece 3, the high-voltage electrode 6 pushes the sample to be measured, so that the sample to be measured is tightly attached to the protection electrode 8, and the measuring electrode 10, the protection electrode 8 and the sample to be measured are reliably connected, and meanwhile, the measuring electrode 10, the high-voltage electrode 6 and the shielding box 1 are movably connected, so that the resistivity measurement auxiliary device can adapt to the connection of samples with different thicknesses, and further the measurement of the resistivity of the samples with different thicknesses is satisfied. When the sample to be measured needs to be replaced, the shielding box 1 is only required to be opened, the sample to be measured is directly replaced, and the measuring steps are repeated.

Further, in order to reduce the current loss through the sample to be measured, as shown in fig. 1 and 3, in a specific embodiment, electroplated tin shielding electrode rings 15 which are mutually communicated and connected with the ground wire connector are arranged on the upper and lower surfaces of the third insulating plate 14, so that the influence of external interference on the measurement result can be avoided while the current loss of the sample to be measured is reduced, and the accuracy of resistivity measurement is improved. And be provided with resistivity change over switch 5 in the outside of second box, resistivity change over switch 5 is connected through wire 4 electricity with measuring terminal 16 to realize the switching between volume resistivity measurement and the surface resistivity measurement, only need can accomplish the switching between volume resistivity measurement and the surface resistivity measurement through resistivity change over switch 5, make the switching mode convenient and fast more. Specifically, the resistivity switching switch 5 is a resistivity switching button mounted on the front face (left side of fig. 1) of the second casing, and the resistivity switching button is snap-fitted with a spring, thereby achieving switching between volume resistivity measurement and surface resistivity measurement.

According to the resistivity measurement auxiliary device provided by the utility model, the measurement assembly is fixed on the shielding box 1, an operator does not need to manually install and put the resistivity measurement auxiliary device, a sample to be measured is only required to be placed on the measurement electrode 10 and the protection electrode 8, and then the first box body and the second box body are buckled, so that the problem that the electrode position cannot be accurately positioned is solved, and the resistivity measurement efficiency is improved. Meanwhile, a first reset elastic piece 3 is arranged in a first box body of the high-voltage electrode 6, under the elastic action of the first reset elastic piece 3, the high-voltage electrode 6 and the protection electrode 8 are respectively tightly attached to a sample to be measured, the high-voltage electrode 6 and the protection electrode 8 are respectively and reliably connected with the sample to be measured, a second reset elastic piece 13 is arranged in a second box body of the measurement electrode 10, under the elastic action of the second reset elastic piece 13, the measurement electrode 10 is tightly attached to the sample to be measured, and therefore reliable connection of the measurement electrode 10 and the sample to be measured is ensured. Because the high-voltage electrode 6 and the measuring electrode 10 are respectively movably connected in the first box body and the second box body through the reset elastic piece, the resistivity measurement auxiliary device can adapt to the connection of samples with different thicknesses, and therefore the resistivity measurement efficiency is further improved. Moreover, on the basis of the original shielding box 1, no external device is added, the elastic force of the reset elastic piece is skillfully utilized, and the structure is simpler through reasonable structural layout, so that the input cost is lower.

The embodiment of the utility model also discloses a resistivity measurement device, which comprises a high resistance meter and an auxiliary device, wherein the auxiliary device is the resistivity measurement auxiliary device disclosed in the embodiment, so that the resistivity measurement auxiliary device has all the technical effects of the resistivity measurement auxiliary device and is not repeated herein. The auxiliary device is connected with the high resistance meter through a lead 4, and the resistivity of the sample to be measured is measured through the high resistance meter.

The terms first and second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to the listed steps or elements but may include steps or elements not expressly listed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model 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 (10)

1. A resistivity measurement assist device, comprising:

the shielding box (1), the shielding box (1) comprises a first box body and a second box body which are mutually hinged;

the measuring assembly comprises a measuring electrode (10), a protecting electrode (8) and a high-voltage electrode (6), wherein the high-voltage electrode (6) is movably arranged in the first box body, the measuring electrode (10) is movably arranged in the second box body, the protecting electrode (8) and the measuring electrode (10) are concentrically arranged, and a sample to be measured is placed between the measuring electrode (10) and the high-voltage electrode (6), so that after the first box body and the second box body are buckled, the measuring assembly is tightly attached to the sample to be measured.

2. The resistivity measurement auxiliary device according to claim 1, wherein the high-voltage electrode (6) is mounted in the first case through a fixing member (2), and a first reset elastic member (3) is connected between the high-voltage electrode (6) and the fixing member (2), so that the high-voltage electrode (6) is tightly attached to the sample to be measured after the first case and the second case are buckled.

3. The resistivity measurement auxiliary device according to claim 2, characterized in that the first return elastic member (3) is a metal spring plate, a first end of the metal spring plate is connected with the fixing member (2), and a second end of the metal spring plate is connected with the high-voltage electrode (6).

4. A resistivity measurement auxiliary device as claimed in claim 3, characterized in that a first insulating plate (7) is arranged in the first housing, and that a first opening through which the high voltage electrode (6) passes is provided in the first insulating plate (7).

5. The resistivity measurement auxiliary device according to claim 1, wherein a second insulating plate (9) is arranged in the second box body, a second opening through which the measurement electrode (10) passes is formed in the second insulating plate (9), the protection electrode (8) is fixed on the second insulating plate (9) through an insulating column (11), a third insulating plate (14) is arranged at the end part of the insulating column (11), and the measurement electrode (10) is movably connected on the third insulating plate (14).

6. The resistivity measurement auxiliary device according to claim 5, characterized in that the third insulating plate (14) is provided with tin-plated shielding electrode rings (15) which are connected to each other and are used for connection with a ground connection, respectively, on opposite surfaces thereof.

7. The resistivity measurement auxiliary device according to claim 5, characterized in that the measurement electrode (10) is provided with a plug-in portion, the third insulating plate (14) is provided with an insulating sleeve (12), the plug-in portion of the measurement electrode (10) is plugged into the insulating sleeve (12), and the third insulating plate (14) is provided with a measurement terminal (16), and the measurement terminal (16) extends into the insulating sleeve (12) and is electrically connected with the plug-in portion of the measurement electrode (10).

8. The resistivity measurement auxiliary device according to claim 7, wherein the insulating sleeve (12) comprises a cylinder and a base connected to the cylinder, the base is arranged on the third insulating plate (14), a second reset elastic member (13) is arranged on the outer side of the cylinder, a first end of the second reset elastic member (13) is connected with the measuring electrode (10), and a second end of the second reset elastic member (13) is connected with the base, so that after the first box and the second box are buckled, the measuring electrode (10) is tightly adhered to a sample to be measured.

9. The resistivity measurement auxiliary device according to claim 7, characterized in that a resistivity change-over switch (5) is arranged on the outside of the second tank, the resistivity change-over switch (5) being electrically connected to the measurement terminal (16) by means of a wire (4), the resistivity change-over switch (5) being used for switching between volume resistivity measurement and surface resistivity measurement.

10. A resistivity measurement apparatus, comprising:

the high resistance meter is used for measuring the resistivity of the sample to be measured;

auxiliary device connected to the high resistance meter by means of a wire (4), the auxiliary device being a resistivity measurement auxiliary device according to any one of claims 1-9.