Resistivity measuring device for electric power engineering investigation

Abstract

The utility model relates to the technical field of resistivity measuring devices, and discloses a resistivity measuring device for electric power engineering investigation, which comprises a protection box, a measuring assembly is arranged on one side in the protection box, a fixing plate is fixedly connected to the bottom of the inner wall of the protection box, and supporting plates which are in bilateral symmetry are fixedly connected to the top of the fixing plate. A plurality of fixing assemblies are arranged on the outer wall of the supporting plate, each fixing assembly comprises a fixing ring, a measuring rod is slidably connected to the inner wall of each fixing ring, a movable column is slidably connected to the interior of each fixing block, an extrusion block is fixedly connected to the other end of each movable column, and a reset spring sleeves the outer wall of each movable column. According to the utility model, after the measuring rod is taken out, the measuring rod is inserted into soil, the measuring instrument is used for detecting resistivity data, after detection, the measuring rod is inserted into the fixing ring, and the reset spring reversely pushes the extrusion block to abut against the outer wall of the measuring rod, so that the effect of preventing the measuring rod from shaking is achieved, the problem that the measuring rod is easy to shake during storage is solved, and the storage stability of the measuring rod is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of resistivity measuring devices, and in particular to a resistivity measuring device for power engineering surveys. Background Technology

[0002] In the field of power engineering surveying, resistivity measuring devices play a crucial role. By measuring the resistivity of underground rock and soil, they can provide key geological information for power line route planning, tower foundation design, and other purposes. Accurate resistivity measurement results help to rationally select engineering schemes, reduce engineering risks, and ensure the safety and stability of power projects. With the continuous development of power engineering construction, higher requirements are being placed on the performance, convenience, and stability of resistivity measuring devices.

[0003] Currently, common resistivity measuring devices typically consist of a measuring instrument, electrodes, and connecting lines. Their working principle involves supplying current to the ground through the electrodes, measuring the potential difference between different electrodes on the ground, and then calculating the resistivity of the underground medium. In terms of mechanical structure, the electrodes are generally simple rod-shaped and are manually inserted into the soil for measurement. The battery part often adopts a more traditional installation method, such as fixing the battery compartment cover with screws to achieve battery installation and protection.

[0004] However, existing resistivity measuring devices suffer from several problems in practical use. For example, the measuring rods lack effective securing measures during storage, making them prone to shaking. This not only leads to collisions and damage between the measuring rods but also causes wear or deformation of the electrode parts, affecting the accuracy of subsequent measurements. Furthermore, traditional battery installation methods make battery replacement cumbersome, requiring tools to disassemble screws and other components, which is time-consuming and significantly reduces equipment maintenance efficiency, failing to meet the demands of rapid operation in practical engineering projects. Therefore, a resistivity measuring device for power engineering surveying is proposed to address these issues. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a resistivity measuring device for power engineering surveys, which aims to improve the problem of easy shaking of the measuring rod when stored in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A resistivity measuring device for power engineering survey includes a protective box, a measuring component is provided on one side inside the protective box, a fixing plate is fixedly connected to the bottom of the inner wall of the protective box, the fixing plate is located on the side of the measuring component, a left-right symmetrical support plate is fixedly connected to the top of the fixing plate, and a plurality of fixing components are provided on the outer wall of the support plate.

[0008] The fixing assembly includes a fixing ring, the side wall of which is fixedly connected to the side wall of the support plate. A measuring rod is slidably connected to the inner wall of the fixing ring. A fixing block is fixedly connected to the outer wall of the fixing ring. A movable column is slidably connected inside the fixing block. A movable block is fixedly connected to one end of the movable column, and a pressing block is fixedly connected to the other end of the movable column. A return spring is sleeved on the outer wall of the movable column. One end of the return spring is fixedly connected to the side wall of the pressing block, and the other end of the return spring is fixedly connected to the inside of the fixing ring.

[0009] As a further description of the above technical solution:

[0010] A cover is rotatably connected to one side of the top of the protective box. The cover is used to cooperate with the protective box to protect the measuring components and the fixing components.

[0011] As a further description of the above technical solution:

[0012] The measuring component includes a measuring instrument, the outer wall of which is fixedly connected to the inner wall of the protective box, and a plurality of connecting columns are fixedly connected to the top of the measuring instrument, the connecting columns being distributed in an array.

[0013] As a further description of the above technical solution:

[0014] A battery is slidably connected inside the measuring instrument. A connecting block is fixedly connected to the side wall of the battery. The outer wall of the connecting block is slidably connected inside the protective box. A handle is fixedly connected inside the connecting block.

[0015] As a further description of the above technical solution:

[0016] The connecting block is provided with symmetrical locking posts on its side, and each locking post is fixedly connected to a limit block on its side wall. The outer walls of the locking posts and limit blocks are slidably connected inside the protective box and the connecting block.

[0017] As a further description of the above technical solution:

[0018] Each limiting block has a linkage rod fixedly connected to its side wall, and each linkage rod has a linkage plate fixedly connected to its side wall.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the protective box is provided with a guide groove, which is located on the side of the connecting block, and the outer wall of the linkage plate is slidably connected to the inner wall of the guide groove.

[0021] As a further description of the above technical solution:

[0022] Each linkage rod is fitted with a limiting spring on its outer wall. One end of the limiting spring is fixedly connected to the side wall of the limiting block, and the other end of the limiting spring is fixedly connected to the inside of the protective box.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the operator first connects one end of the power cord to the connecting column and the other end to the top port of the measuring rod. The measuring rod is then pulled out and inserted into the soil. The resistivity data is measured using a measuring instrument. After the measurement is completed, the power cord is removed, and the measuring rod is inserted into the fixing ring. The outer wall of the measuring rod is pressed against the pressing block, causing the movable column to move outward and the return spring to compress. After it is in place, the return spring pushes back, allowing the pressing block to press against the groove on the outer wall of the measuring rod, thus fixing the measuring rod. This achieves the effect of preventing the measuring rod from shaking, solving the problem of easy shaking when the measuring rod is stored, and improving the stability of the measuring rod during storage.

[0025] 2. In this utility model, the sliding linkage plate moves to the side, causing the linkage rod to move, which in turn moves the limiting block, allowing the locking pin to disengage from the inner hole of the connecting block. The limiting spring is compressed, and at this time, the battery can be pulled out by the handle. During installation, the battery is inserted into the slot, the linkage plate is released, the limiting spring returns to its original position, and the locking pin is pushed into the hole of the connecting block to fix the battery. This achieves the effect of quick battery replacement, solves the problem of inconvenient battery replacement, and improves equipment maintenance efficiency. Attached Figure Description

[0026] Figure 1 A perspective view of a resistivity measuring device for power engineering surveying proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the battery structure of a resistivity measuring device for power engineering surveying proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the locking column structure of a resistivity measuring device for power engineering surveying proposed in this utility model.

[0029] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the fixed ring structure of a resistivity measuring device for power engineering surveying proposed in this utility model.

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Protective box; 2. Measuring instrument; 3. Connecting column; 4. Box cover; 5. Connecting block; 6. Handle; 7. Battery; 8. Locking column; 9. Limiting block; 10. Limiting spring; 11. Linkage rod; 12. Linkage plate; 13. Guide groove; 14. Fixing plate; 15. Support plate; 16. Fixing ring; 17. Fixing block; 18. Movable column; 19. Movable block; 20. Return spring; 21. Pressing block; 22. Measuring rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 and Figure 5 , Figure 6 The present invention provides an embodiment of a resistivity measuring device for power engineering survey, comprising a protective box 1, which is made of aluminum alloy and has good protective performance, used to store and protect the instruments and equipment required for measurement. A measuring component is provided on one side inside the protective box 1. A fixing plate 14 is fixedly connected to the bottom of the inner wall of the protective box 1 by bolts. The fixing plate 14 is made of metal and is located on the side of the measuring component, used to provide a stable support base for the support plate 15. A left-right symmetrical support plate 15 is fixedly connected to the top of the fixing plate 14. The support plate 15 is also made of metal. Multiple fixing components are provided on the outer wall of the support plate 15 for fixing the measuring rod 22.

[0036] The fixing assembly includes a fixing ring 16, which is made of metal. The sidewalls of the fixing ring 16 are fixedly connected to the sidewalls of the support plate 15 by welding. The inner wall of the fixing ring 16 is smoothed to guide the insertion and removal of the measuring rod 22 and provide radial support. The measuring rod 22, which is made of copper, is slidably connected to the inner wall of the fixing ring 16 for insertion into the soil. A fixing block 17, made of metal, is fixedly connected to the outer wall of the fixing ring 16. The fixing block 17 has smooth channels inside to limit the movement direction of the movable column 18. The movable column 18 is slidably connected inside the fixing block 17. A movable block 19, made of engineering plastic, is fixedly connected to one end of the movable column 18 for easy manual operation. A pressing block 21, consisting of a metal block and a rubber head, is fixedly connected to the other end of the movable column 18 for pressing the measuring rod 22. The metal block is located inside the fixing block 17 and is used to connect the return spring 20 and limit the displacement range of the rubber head. A return spring 20 is fitted on the outer wall of the movable column 18. The return spring 20 is made of spring steel. One end of the return spring 20 is fixedly connected to the side wall of the extrusion block 21, and the other end of the return spring 20 is fixedly connected to the inside of the fixing ring 16. It is used to provide a return force after the movable column 18 is displaced. A cover 4 is rotatably connected to one side of the top of the protective box 1. The cover 4 is made of the same material as the protective box 1. The cover 4 is used to cooperate with the protective box 1 to prevent dust, moisture and other substances from entering the interior of the protective box 1 and to protect the measuring component and the fixing component. The measuring component includes a measuring instrument 2. The measuring instrument 2 consists of electronic components and a shell. The shell is made of plastic. The measuring instrument 2 is existing technology and will not be described in detail here. The outer wall of the measuring instrument 2 is fixedly connected to the inner wall of the protective box 1 by bolts. It is used to detect and analyze resistivity data. Multiple connecting posts 3 are fixedly connected to the top of the measuring instrument 2. The connecting posts 3 are made of metal and are used to connect the power cord to realize the electrical connection between the measuring instrument 2 and the measuring rod 22. The connecting posts 3 are distributed in an array.

[0037] Specifically, when using the resistivity measuring device for power engineering surveys, the operator first opens the box cover 4, flipping it upwards. Then, the operator inserts one end of the power cord into the connecting post 3 at the top of the measuring instrument 2, and connects the other end of the power cord to the port at the top of the measuring rod 22, completing the electrical connection between the measuring instrument 2 and the measuring rod 22. Next, the operator holds the top of the measuring rod 22 and applies upward pulling force. Under the pulling force, the measuring rod 22 moves upward in a straight line along the inner wall of the fixing ring 16. After removing multiple measuring rods 22 from the protective box 1, the operator inserts the bottom of the measuring rod 22 into the soil to be measured. After the measuring rod 22 is inserted into the soil, the measuring instrument 2 establishes an electrical connection with the measuring rod 22 through the power cord, and begins to detect and analyze the soil resistivity data. After the detection is completed, the operator unplugs the power cord from the port at the top of the measuring rod 22, terminating the electrical connection between the measuring instrument 2 and the measuring rod 22. Then, the operator... The operator holds the top of the measuring rod 22, aligns it with the center hole of the fixing ring 16, and inserts it downwards into the fixing ring 16. During insertion, the outer wall of the measuring rod 22 contacts the side wall of the pressing block 21, applying radial pressure to the pressing block 21. Under the pressure, the pressing block 21 moves outwards from the fixing ring 16, causing the movable column 18 to move outwards synchronously, while compressing the return spring 20. When the measuring rod 22 is inserted into place, the groove on the outer wall of the measuring rod 22 aligns with the pressing block 21. The return spring 20 releases its elastic potential energy, pushing the pressing block 21 into the fixing ring 16. The side wall of the pressing block 21 abuts against the groove on the outer wall of the measuring rod 22, thus fixing the position of the measuring rod 22. Through the elastic force of the return spring 20, the pressing block 21 fits tightly against the measuring rod 22, preventing the measuring rod 22 from shaking and ensuring the stability of the measuring rod 22 inside the protective box 1. Finally, the operator flips the box cover 4 downwards with the hinge as the axis to close it, completing the storage of the measuring device.

[0038] Reference Figures 2-4The measuring instrument 2 has a battery 7 slidably connected inside via a sliding guide rail structure. The battery 7 consists of a cell, a shell, and electrodes. The shell is made of flame-retardant plastic. The battery 7 is existing technology and will not be described in detail here. A connecting block 5 is fixedly connected to the side wall of the battery 7. The connecting block 5 is made of aluminum alloy and is slidably connected to the outer wall of the protective box 1. It is used to protect one side of the battery 7 and transmit operating force. A handle 6 is fixedly connected inside the connecting block 5 by bolts. The handle 6 is made of engineering plastic and has anti-slip texture on the surface for easy gripping and operation. The connecting block 5 has symmetrical locking pins 8 on its side. The locking pins 8 are metal pins used to insert into the connecting block 5 and lock its position. Limiting blocks 9 are fixedly connected to the side walls of the locking pins 8. The limiting blocks 9 are made of metal and are used to transmit the thrust of the linkage rod 11 and limit the displacement range of the locking pins 8. The outer walls of the locking pins 8 and the limiting blocks 9 are slidably connected to the protective box 1. The guide hole inside the connecting block 5 is used to achieve mechanical locking of the battery 7. The side wall of the limiting block 9 is fixedly connected with the linkage rod 11, which is used to connect the limiting block 9 and the linkage plate 12. The side wall of the linkage rod 11 is fixedly connected with the linkage plate 12. The linkage plate 12 is made of metal and is used to receive the operating force of the operator and transmit it to the linkage rod 11. The outer wall of the protective box 1 is provided with a guide groove 13. The guide groove 13 is located on the side of the connecting block 5 and is machined with a smooth inner wall. It is used to provide a sliding track for the linkage plate 12. The outer wall of the linkage plate 12 is slidably connected to the inner wall of the guide groove 13 to ensure its stable movement. The outer wall of the linkage rod 11 is fitted with a limiting spring 10. The limiting spring 10 is made of spring steel. One end of the limiting spring 10 is fixedly connected to the side wall of the limiting block 9, and the other end of the limiting spring 10 is fixedly connected to the inside of the protective box 1. It is used to provide a reset force for the locking post 8 so that it automatically inserts into the hole of the connecting block 5 after the linkage plate 12 is released.

[0039] Specifically, when the equipment needs to replace battery 7, the operator first holds the linkage plate 12 and applies a horizontal pushing force to the right. Under the action of the pushing force, the linkage plate 12 slides linearly outward along the inner wall of the guide groove 13. The displacement of the linkage plate 12 is transmitted to the limit block 9 through the linkage rod 11. The linkage rod 11 is fixedly connected to the linkage plate 12. When the linkage plate 12 slides outward, the linkage rod 11 moves linearly outward accordingly, causing the limit block 9 to move outward synchronously. The displacement of the limit block 9 causes the locking pin 8 to move outward, gradually disengaging from the locking hole inside the connecting block 5, thus releasing the fixation of battery 7. At the same time, the limit spring 10 is compressed. When the locking pin 8 is completely disengaged from the hole in the connecting block 5, battery 7 loses its mechanical constraint. The operator then holds the handle 6 and applies a horizontal pulling force outward. Under the action of the pulling force, the connecting block 5 slides linearly outward along the guide rail inside the protective box 1. The battery 7 is slid outward synchronously until it is fully exposed in the protective box 1. The operator can then remove the battery 7 for replacement. When installing a new battery 7, the operator aligns the battery 7 with the guide rail inside the protective box 1 and applies a horizontal pushing force inward. The battery 7 drives the connecting block 5 to slide in a straight line along the guide rail until the locking hole of the connecting block 5 is aligned with the locking pin 8. At this point, the operator releases their grip on the linkage plate 12, and the limit spring 10 releases its stored elastic potential energy, pushing the limit block 9 to reset inward. The inward reset of the limit block 9 drives the linkage rod 11 and the linkage plate 12 to slide inward. The linkage plate 12 returns to its initial position along the inner wall of the guide groove 13. At the same time, the locking pin 8 moves inward under the push of the limit block 9 and inserts into the locking hole inside the connecting block 5, completing the mechanical locking of the battery 7. This achieves quick disassembly and installation of the battery 7, effectively improving the convenience of equipment maintenance.

[0040] Working principle: When using the resistivity measuring device for power engineering survey, the staff first connects one end of the power cord to the connecting post 3 and the other end to the top port of the measuring rod 22. Then, the measuring rod 22 is pulled upward. After the measuring rod 22 is pulled out, the staff inserts multiple measuring rods 22 into the soil and uses the measuring instrument 2 to detect the resistivity data.

[0041] After the test is completed, the staff removes the power cord from the port of the measuring rod 22 and inserts the measuring rod 22 into the fixing ring 16. At this time, the outer wall of the measuring rod 22 presses against the side wall of the pressing block 21, causing the movable column 18 to move outward as well. This causes the return spring 20 to be compressed. When the measuring rod 22 is inserted into place, the return spring 20 pushes the side wall of the pressing block 21 against the groove on the outer wall of the measuring rod 22, thereby fixing the position of the measuring rod 22 and achieving the effect of stabilizing the measuring rod 22 and preventing it from shaking.

[0042] When the battery needs to be replaced, the operator first slides the linkage plate 12 to the side. The displacement of the linkage plate 12 causes the linkage rod 11 on its side to also move. The displacement of the linkage rod 11 causes the limit block 9 to move synchronously. The displacement of the limit block 9 causes the locking pin 8 to disengage from the hole inside the connecting block 5 and causes the limit spring 10 to be compressed. At this time, the operator can pull the connecting block 5 outward by the handle 6, thereby causing the battery 7 to slide outward and thus remove the battery 7. During installation, the battery 7 is inserted into the slot, and then the linkage plate 12 is released. The limit spring 10 returns to its original position and pushes the locking pin 8 into the hole inside the connecting block 5, thus completing the fixation of the battery 7 and achieving the effect of quickly replacing the battery 7.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A resistivity measuring device for electric power engineering surveying, comprising a protective case (1), characterized in that: The protection box (1) is provided with a measuring assembly on one side of the inside, a fixed plate (14) is fixedly connected to the inner wall bottom of the protection box (1), the fixed plate (14) is located on the side of the measuring assembly, a support plate (15) is fixedly connected to the top of the fixed plate (14), and the support plate (15) is symmetrical left and right; a plurality of fixing assemblies are arranged on the outer wall of the support plate (15). The fixing assembly comprises a fixed ring (16), the fixed ring (16) is fixedly connected to the side wall of the support plate (15), a measuring rod (22) is slidably connected to the inner wall of the fixed ring (16), a fixed block (17) is fixedly connected to the outer wall of the fixed ring (16), an activity column (18) is slidably connected to the inside of the fixed block (17), an activity block (19) is fixedly connected to one end of the activity column (18), an extrusion block (21) is fixedly connected to the other end of the activity column (18), a reset spring (20) is sleeved on the outer wall of the activity column (18), one end of the reset spring (20) is fixedly connected to the side wall of the extrusion block (21), and the other end of the reset spring (20) is fixedly connected to the inside of the fixed ring (16).

2. The resistivity measuring device for electric power engineering surveying according to claim 1, characterized in that: The protection box (1) is provided with a measuring assembly on one side of the inside, a fixed plate (14) is fixedly connected to the inner wall bottom of the protection box (1), the fixed plate (14) is located on the side of the measuring assembly, a support plate (15) is fixedly connected to the top of the fixed plate (14), and the support plate (15) is symmetrical left and right; a plurality of fixing assemblies are arranged on the outer wall of the support plate (15).

3. The resistivity measuring device for electric power engineering surveying according to claim 1, characterized in that: The measuring assembly comprises a measuring instrument (2), the outer wall of the measuring instrument (2) is fixedly connected to the inner wall of the protection box (1), and a plurality of connecting columns (3) are fixedly connected to the top of the measuring instrument (2).

4. The resistivity measuring device for electric power engineering surveying according to claim 3, characterized in that: The measuring instrument (2) is provided with a battery (7) slidably connected to the inside, a connecting block (5) is fixedly connected to the side wall of the battery (7), the outer wall of the connecting block (5) is slidably connected to the inside of the protection box (1), and a handle (6) is fixedly connected to the inside of the connecting block (5).

5. The resistivity measuring device for electric power engineering surveying according to claim 4, characterized in that: The connecting block (5) is provided with a locking column (8) symmetrically arranged above and below, the side wall of the locking column (8) is fixedly connected with a limiting block (9), and the outer wall of the locking column (8) and the limiting block (9) is slidably connected to the inside of the protection box (1) and the connecting block (5).

6. The resistivity measuring device for electric power engineering surveying according to claim 5, characterized in that: The limiting block (9) is provided with a linkage rod (11) fixedly connected to the side wall, and the side wall of the linkage rod (11) is fixedly connected with a linkage plate (12).

7. The resistivity measuring device for electric power engineering surveying according to claim 6, characterized in that: The outer wall of the protection box (1) is provided with a guide groove (13), the guide groove (13) is located on the side of the connecting block (5), and the outer wall of the linkage plate (12) is slidably connected to the inner wall of the guide groove (13).

8. The resistivity measuring device for electric power engineering surveying according to claim 6, characterized in that: The outer wall of the linkage rod (11) is sleeved with a limiting spring (10), one end of the limiting spring (10) is fixedly connected to the side wall of the limiting block (9), and the other end of the limiting spring (10) is fixedly connected to the inside of the protection box (1).

Images