Waterproof insulation resistance tester

Abstract

The invention belongs to the technical field of resistance testers, and discloses a waterproof insulation resistance tester, which comprises a shell, a first fixing groove is formed in the shell, a moving plate is movably mounted in the first fixing groove, a fixing rod is fixedly mounted at the bottom of the moving plate, a cover plate is movably mounted in the shell, and the fixing rod is fixedly mounted at the bottom of the moving plate. And a second limiting column is fixedly mounted on the front surface of the cover plate. According to the invention, a self-locking structure is formed through a second limiting column, a first limiting column and a lever type limiting workpiece traditionally, so that rigid connection is formed after the cover plate is closed, external vibration interference is effectively resisted, the risk of poor contact is eliminated, and the test stability is ensured; a vertical guide system formed by the movable plate and the fixed groove accurately converts the operation of the cover plate into the linear displacement of the fixed rod, and a stable contact resistance loop formed by the test probe and the fixed rod is matched, so that the consistency of test data is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of resistance testers, and in particular relates to a waterproof insulation resistance tester. Background Art

[0002] A waterproof insulation resistance tester is a professional electrical safety testing device designed for use in humid, underwater, or high-humidity environments. Its core function is to evaluate the insulation performance of electrical equipment in harsh environments by measuring the resistance and dielectric strength of insulating materials. The instrument's sealed housing (typically meeting IP67 and above) completely protects against dust ingress and the effects of temporary water immersion, ensuring stable operation of the internal circuitry even in humid environments. Existing resistance tester technology has multiple limitations: high-precision equipment is expensive to purchase and maintain, and requires regular professional calibration, which drives up the cost of use; it lacks environmental adaptability, and temperature fluctuations, humidity changes, and electromagnetic interference can easily lead to measurement deviations, and stability is significantly reduced in extreme environments; it is highly complex to operate, and multi-functional instruments require professional training, which increases labor costs; the measurement range is limited, and out-of-range resistance values ​​require auxiliary equipment or special methods, reducing detection efficiency; high voltage / high current test scenarios pose a risk of electric shock and equipment damage; portable devices have limited battery life and require frequent charging or battery replacement; four-wire calibration is affected by test line loss or mismatch, and requires repeated calibration; the device model and test scenario have a low degree of match, and improper selection directly affects the accuracy of the results; traditional instruments have poor human-computer interaction, insufficient portability, and lack of data management and analysis functions, making it difficult to meet the needs of rapid on-site detection and remote operations, which comprehensively restricts test efficiency and reliability. Summary of the Invention

[0003] The object of the present invention is to provide a waterproof insulation resistance tester to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof insulation resistance tester, comprising a shell, a first fixed groove is opened inside the shell, a movable plate is movably installed inside the first fixed groove, a fixed rod is fixedly installed on the bottom of the movable plate, a cover plate is movably installed inside the shell, a second limiting column is fixedly installed on the front of the cover plate, a first limiting column is fixedly installed on the front of the shell, a limiting workpiece is movably installed on the outer surface of the first limiting column, and one end of the limiting workpiece is clamped on the outer surface of the second limiting column, and a resistance tester is fixedly installed on the top of the movable plate.

[0005] Preferably, a fixing frame is fixedly installed on the top of the shell, a second fixing groove is opened inside the fixing frame, a mounting plate is movably installed inside the second fixing groove, a support column is fixedly installed on the top of the mounting plate, four support columns are fixedly installed on the top of the mounting plate, a positioning hole is movably installed inside the mounting plate, a positioning block is movably installed inside the positioning hole, and one end of the positioning block passes through the interior of the fixing frame, a box body is fixedly installed on the right side of the fixing frame, a pull rod is fixedly installed on one end of the positioning block, and one end of the pull rod passes through the interior of the box body, and a second spring is fixedly installed between the positioning block and the box body.

[0006] Preferably, telescopic rods are fixedly installed on the outside of the shell, and the telescopic rods are in the form of a linear array. A fixed plate is fixedly installed on one end of the telescopic rod, a buffer plate is fixedly installed on the outside of the fixed plate, and a first spring is fixedly installed between the shell and the fixed plate.

[0007] Preferably, columns are fixedly installed around the bottom of the shell, and a base is fixedly installed at the bottom of the columns.

[0008] Preferably, a fixing seat is fixedly installed on the back side of the shell, a fixing block is movably installed inside the fixing seat, and a working box is fixedly installed on the back side of the fixing block.

[0009] Preferably, the outer diameter of the fixing block is equal to the inner diameter of the fixing seat, and the interior of the fixing seat has a smooth design.

[0010] Preferably, the telescopic rods and first springs are arranged in groups of two, with a total of ten groups between the housing and the fixing plate.

[0011] Preferably, a push rod is fixedly mounted on the front side of the cover plate, and the outer surface of the push rod is U-shaped.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention forms a self-locking structure with the lever-type limiting workpiece through the second limiting column and the first limiting column in contrast to the traditional method, so that a rigid connection is formed after the cover is closed, which effectively resists external vibration interference, eliminates the risk of poor contact, and ensures test stability; the vertical guide system composed of its movable plate and the fixed groove accurately converts the cover operation into the linear displacement of the fixed rod, and cooperates with the stable contact resistance circuit formed by the test probe and the fixed rod to significantly improve the consistency of test data; through the synchronous control design of mechanical locking and electrical conduction, the operator can complete the dual actions of component fixing and circuit conduction by closing the cover once. Combined with the linear compensation mechanism of the movable plate, it can automatically adapt to the optimal test point position of the tested components of different specifications, while simplifying the operation process, greatly expanding the scope of application of the equipment, and comprehensively improving the detection efficiency and equipment utilization.

[0013] 2. Compared with the traditional resistance tester, the resistance tester of the present invention realizes the quick disassembly and assembly function of the rain shield through the clamping structure and the spring-driven positioning mechanism, which has significant advantages; during installation, the positioning block is automatically retracted by the squeezing of the mounting plate, and after the mounting plate is inserted, the spring drives the positioning block to snap into the positioning hole to complete the fixation, and the operation is simple and quick; during disassembly, the mounting plate can be taken out by pulling the pull rod, without the assistance of tools, which greatly improves work efficiency; at the same time, the structure ensures the stability of the rain shield after installation, accurate positioning, and not easy to loosen; in addition, the quick disassembly and assembly design facilitates the cleaning, repair or replacement of the rain shield at a later stage, reducing maintenance costs; overall, the device has a clever structure and strong practicality, and is suitable for scenarios where rain shields need to be frequently replaced or maintained.

[0014] 3. Compared with traditional resistance testers, the resistance tester of the present invention adopts multiple groups of linearly arranged telescopic rods and springs to form a buffer system, which has multiple advantages. The linear array design ensures that the impact force is evenly distributed, avoids local stress concentration, and improves structural stability; secondly, the buffer plate serves as the first protective layer, effectively absorbing and dispersing impact energy, reducing direct impact on the main structure; the elastic deformation of the spring realizes efficient energy conversion and buffering, significantly reduces the impact peak, and protects the safety of the equipment; thirdly, the elastic restoring force of the spring enables the device to have an automatic reset function, ensuring continuous protection capability and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional appearance structure of the present invention; Figure 2 This is a schematic diagram of the side three-dimensional appearance structure of the present invention; Figure 3 This is a schematic diagram of the explosion structure of the limited workpiece of the present invention; Figure 4 This is a schematic diagram of the explosion structure of the resistance tester and the movable plate of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the shell of the present invention; Figure 6 This is a schematic diagram of a partial cross-sectional structure of a fixing frame of the present invention; Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram; Figure 8 This is a schematic diagram of the mounting plate structure of the present invention.

[0016] In the figure: 1. Shell; 2. Fixed frame; 3. Rainproof plate; 4. Mounting plate; 5. Support column; 6. Box body; 7. Telescopic rod; 8. First spring; 9. Fixed plate; 10. Buffer plate; 11. Cover plate; 12. Push rod; 13. Moving plate; 14. Fixed rod; 15. Column; 16. Base; 17. Fixed seat; 18. Fixed block; 19. Working box; 20. Limit workpiece; 21. First limiting column; 22. Second limiting column; 23. Resistance tester; 24. First fixing groove; 25. Positioning block; 26. Pull rod; 27. Second spring; 28. Second fixing groove; 29. ​​Positioning hole. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figures 1 to 8 As shown, an embodiment of the present invention provides a waterproof insulation resistance tester, including a shell 1, a first fixed groove 24 is opened inside the shell 1, a movable plate 13 is movably installed inside the first fixed groove 24, a fixed rod 14 is fixedly installed on the bottom of the movable plate 13, a cover plate 11 is movably installed inside the shell 1, a second limiting column 22 is fixedly installed on the front of the cover plate 11, a first limiting column 21 is fixedly installed on the front of the shell 1, a limiting workpiece 20 is movably installed on the outer surface of the first limiting column 21, and one end of the limiting workpiece 20 is clamped on the outer surface of the second limiting column 22, and a resistance tester 23 is fixedly installed on the top of the resistance tester 23.

[0019] When the cover 11 is closed, the second limiting post 22 on the front thereof forms an alignment relationship with the first limiting post 21 on the front of the shell 1. At this time, the limiting workpiece 20 is operated so that it is simultaneously sleeved on the outer surfaces of the two second limiting posts 22 and the first limiting post 21, and the cover 11 and the shell 1 are mechanically locked by the lever principle. During this process, the movable plate 13 produces a vertical displacement along the track of the first fixing slot 24, driving the bottom fixing rod 14 to perform a positioning action, ensuring that the component under test is accurately fixed in the test cavity; when the resistance tester 23 is started, the test probe installed on its top forms a conductive loop with the fixing rod 14, and the displacement adjustment of the movable plate 13 realizes the precise docking of the test point, and finally completes the acquisition and display of the resistance value of the component under test; finally, the locking mechanism of the limiting workpiece 20 is used to ensure the stability of the test, and the linear movement of the movable plate 13 is used to realize the precise control of the test probe, thus forming a complete resistance test closed-loop system.

[0020] When the cover 11 is closed, the second limiting post 22 on the front side is precisely aligned with the first limiting post 21 on the front side of the shell 1. At this time, the limiting workpiece 20 is operated to be simultaneously sleeved on the outer surfaces of the two limiting posts, and a mechanical locking structure is formed by the lever principle to firmly connect the cover 11 and the shell 1; in this locking process, the movable plate 13 produces a vertical displacement along the first fixing groove 24 opened inside the shell 1, and the fixing rod 14 fixedly installed at the bottom thereof moves synchronously therewith, performing precise positioning action to ensure that the component under test remains stable in the test cavity; when the resistance tester 23 is started, the test probe installed on its top forms a conductive loop with the fixing rod 14, and the precise docking of the test point is achieved through the linear movement of the movable plate 13, and finally the resistance value of the component under test is collected and displayed; the mechanical stability during the test is ensured by the locking mechanism of the limiting workpiece 20, and the movable plate 13 is used to The precise displacement control of the movable plate 13 realizes the precise positioning of the test probe, and forms a self-locking structure with the lever-type limiting workpiece through the traditional second limiting column 22 and the first limiting column 21, so that a rigid connection is formed after the cover is closed, effectively resisting external vibration interference, eliminating the risk of poor contact, and ensuring test stability; the vertical guide system composed of the movable plate and the fixed groove accurately converts the cover operation into the linear displacement of the fixed rod, and cooperates with the stable contact resistance circuit formed by the test probe and the fixed rod to significantly improve the consistency of test data; through the synchronous control design of mechanical locking and electrical conduction, the operator can complete the dual actions of component fixing and circuit conduction by closing the cover once. Combined with the linear compensation mechanism of the movable plate, it can automatically adapt to the optimal test point of the components under test of different specifications, while simplifying the operation process, greatly expanding the scope of application of the equipment, and comprehensively improving the detection efficiency and equipment utilization.

[0021] Among them, a fixing frame 2 is fixedly installed on the top of the shell 1, a second fixing groove 28 is opened inside the fixing frame 2, a mounting plate 4 is movably installed inside the second fixing groove 28, a support column 5 is fixedly installed on the top of the mounting plate 4, and a rainproof plate 3 is fixedly installed on the top of the four support columns 5. A positioning hole 29 is movably installed inside the mounting plate 4, a positioning block 25 is movably installed inside the positioning hole 29, and one end of the positioning block 25 passes through the interior of the fixing frame 2, a box body 6 is fixedly installed on the right side of the fixing frame 2, a pull rod 26 is fixedly installed on one end of the positioning block 25, and one end of the pull rod 26 passes through the interior of the box body 6, and a second spring 27 is fixedly installed between the positioning block 25 and the box body 6.

[0022] When the staff inserts the mounting plate 4 into the second fixing groove 28 of the fixing frame 2, the positioning block 25 is squeezed by the mounting plate 4 to compress the second spring 27 and retract into the box body 6. After the mounting plate 4 is fully inserted, the positioning block 25 is automatically snapped into the positioning hole 29 under the elastic restoring force of the second spring 27, completing the fixed installation of the rain shield 3; when disassembling, pull the pull rod 26 to drive the positioning block 25 out of the positioning hole 29, and the mounting plate 4 can be removed from the fixing frame 2.

[0023] During installation, the mounting plate 4 is inserted into the second fixing groove 28 of the fixing frame 2, and the positioning block 25 is squeezed by the mounting plate 4, compressing the second spring 27 and retracting it into the box body 6; after the mounting plate 4 is fully inserted, the positioning block 25 is automatically snapped into the positioning hole 29 under the elastic restoring force of the second spring 27, completing the fixation of the rain shield 3; during disassembly, the pull rod 26 is pulled to disengage the positioning block 25 from the positioning hole 29, and the mounting plate 4 can be taken out. Compared with the traditional resistance tester, the resistance tester realizes the rapid disassembly and assembly function of the rain shield through the snap-fit ​​structure and the spring-driven positioning mechanism, which has significant advantages. When installing, the positioning block is automatically retracted by the squeezing of the mounting plate. After the mounting plate is inserted, the spring drives the positioning block to fit into the positioning hole to complete the fixation. The operation is simple and quick. When disassembling, the mounting plate can be taken out by simply pulling the pull rod, without the assistance of tools, which greatly improves work efficiency. At the same time, this structure ensures the stability of the flashing after installation, with precise positioning and not easy to loosen. In addition, the quick disassembly and assembly design facilitates the cleaning, repair or replacement of the flashing at a later time, reducing maintenance costs. Overall, the device has a clever structure and strong practicality, and is suitable for scenarios where flashing requires frequent replacement or maintenance.

[0024] Among them, telescopic rods 7 are fixedly installed on the outside of the shell 1, and the telescopic rods 7 are in the form of a linear array. A fixed plate 9 is fixedly installed at one end of the telescopic rod 7, and a buffer plate 10 is fixedly installed on the outside of the fixed plate 9. A first spring 8 is fixedly installed between the shell 1 and the fixed plate 9.

[0025] The operator utilizes a system of multiple telescopic rods 7 and first springs 8 arranged in a linear array to achieve a buffering and protective function. When an external impact acts on the buffer plate 10, the impact force is first absorbed by the buffer plate and transferred to the fixed plate 9, pushing the fixed plate toward the housing 1. At this point, the telescopic rods 7 simultaneously contract, and the first springs 8 connected between the housing and the fixed plate are compressed. The elastic deformation of the springs converts the kinetic energy of the impact into elastic potential energy, thus absorbing and buffering the impact. When the external load disappears, the elastic restoring force of the first springs 8 pushes the fixed plate 9 back to its original position, causing the telescopic rods 7 to re-extend and the buffer plate 10 to return to its initial position.

[0026] The protective function is achieved by using a buffer system composed of multiple linearly arranged telescopic rods 7 and first springs 8. When an external impact acts on the buffer plate 10, the impact energy is transferred through the buffer plate to the fixed plate 9, pushing it toward the housing 1. During this process, the telescopic rods 7 simultaneously contract, and the first spring 8 between the housing 1 and the fixed plate 9 is compressed and deformed, converting the impact kinetic energy into elastic potential energy for absorption and buffering. After the external force disappears, the elastic restoring force of the spring pushes the fixed plate 9 back to its original position, causing the telescopic rods 7 to extend and the buffer plate 10 to return to its original position, completing the complete cycle of impact energy absorption and release. Compared with traditional resistance testers, this resistance tester uses multiple linearly arranged telescopic rods and springs to form a buffer system, which has multiple advantages. The linear array design ensures uniform distribution of impact force, avoids local stress concentration, and improves structural stability. Secondly, the buffer plate acts as the first protective layer, effectively absorbing and dissipating impact energy, reducing direct impact on the main structure. The elastic deformation of the spring achieves efficient energy conversion and buffering, significantly reducing the impact peak and protecting the equipment safety. Thirdly, the elastic restoring force of the spring enables the device to have an automatic reset function, ensuring continuous protection and extending its service life.

[0027] Among them, columns 15 are fixedly installed around the bottom of the shell 1, and a base 16 is fixedly installed at the bottom of the columns 15.

[0028] Since the bottom of the shell 1 is fixedly installed with columns 15 around it, and the bottom of the column 15 is fixedly installed with a base 16, the cooperation between the base 16 and the column 15 facilitates providing stable support for the shell 1, thereby improving the use efficiency of the shell 1.

[0029] A fixing seat 17 is fixedly mounted on the back of the housing 1 , a fixing block 18 is movably mounted inside the fixing seat 17 , and a working box 19 is fixedly mounted on the back of the fixing block 18 .

[0030] By holding the working box 19, the fixing block 18 is slowly inserted into the fixing seat 17, and the fixing block 18 is limited and fixed by the fixing seat 17. By adding the working box 19, it is convenient for the staff to take and place the maintenance tools inside the working box 19.

[0031] The outer diameter of the fixing block 18 is equal to the inner diameter of the fixing seat 17 , and the interior of the fixing seat 17 has a smooth surface design.

[0032] By holding the working box 19, the fixing block 18 is slowly inserted into the interior of the fixing seat 17, and the fixing seat 17 limits the fixing block 18, thereby ensuring the installation efficiency of the working box 19 and extending the use efficiency of the working box 19.

[0033] The telescopic rods 7 and the first springs 8 are arranged in groups of two, and there are ten groups in total between the housing 1 and the fixing plate 9 .

[0034] Since the telescopic rods 7 and the first springs 8 are grouped in pairs, there are a total of ten groups between the shell 1 and the fixed plate 9. Through the cooperation between the telescopic rods 7 and the first springs 8, it is convenient to provide stable anti-collision for the shell 1 in time, thereby ensuring the stability of the shell 1 during use.

[0035] A push rod 12 is fixedly mounted on the front of the cover plate 11 , and an outer surface of the push rod 12 is U-shaped.

[0036] Since the outer surface of the push rod 12 is U-shaped on the front of the cover 11 and the U-shaped push rod 12 is ergonomic, it is convenient to slowly push the cover 11 into the interior of the shell 1, ensuring the fixing efficiency of the internal resistance tester 23 of the shell 1.

[0037] Working principle and usage process: When the cover 11 is closed, the second limiting post 22 on the front thereof forms an alignment relationship with the first limiting post 21 on the front of the shell 1. At this time, the limiting workpiece 20 is operated so that it is simultaneously sleeved on the outer surfaces of the two second limiting posts 22 and the first limiting post 21, and the cover 11 and the shell 1 are mechanically locked by the lever principle. During this process, the movable plate 13 produces a vertical displacement along the track of the first fixing slot 24, driving the bottom fixing rod 14 to perform a positioning action, ensuring that the component under test is accurately fixed in the test cavity; when the resistance tester 23 is started, the test probe installed on its top forms a conductive loop with the fixing rod 14, and the displacement adjustment of the movable plate 13 realizes the precise docking of the test point, and finally completes the acquisition and display of the resistance value of the component under test; finally, the locking mechanism of the limiting workpiece 20 is used to ensure the stability of the test, and the linear movement of the movable plate 13 is used to realize the precise control of the test probe, thus forming a complete resistance test closed-loop system.

[0038] When the staff inserts the mounting plate 4 into the second fixing groove 28 of the fixing frame 2, the positioning block 25 is squeezed by the mounting plate 4 to compress the second spring 27 and retract into the box body 6. After the mounting plate 4 is fully inserted, the positioning block 25 is automatically snapped into the positioning hole 29 under the elastic restoring force of the second spring 27, completing the fixed installation of the rain shield 3; when disassembling, pull the pull rod 26 to drive the positioning block 25 out of the positioning hole 29, and the mounting plate 4 can be removed from the fixing frame 2.

[0039] The operator utilizes a system of multiple telescopic rods 7 and first springs 8 arranged in a linear array to achieve a buffering and protective function. When an external impact acts on the buffer plate 10, the impact force is first absorbed by the buffer plate and transferred to the fixed plate 9, pushing the fixed plate toward the housing 1. At this point, the telescopic rods 7 simultaneously contract, and the first springs 8 connected between the housing and the fixed plate are compressed. The elastic deformation of the springs converts the kinetic energy of the impact into elastic potential energy, thus absorbing and buffering the impact. When the external load disappears, the elastic restoring force of the first springs 8 pushes the fixed plate 9 back to its original position, causing the telescopic rods 7 to re-extend and the buffer plate 10 to return to its initial position.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof insulation resistance tester, comprising a housing (1), characterized in that: A first fixing groove (24) is provided inside the shell (1), a movable plate (13) is movably installed inside the first fixing groove (24), a fixing rod (14) is fixedly installed at the bottom of the movable plate (13), a cover plate (11) is movably installed inside the shell (1), a second limiting column (22) is fixedly installed on the front of the cover plate (11), a first limiting column (21) is fixedly installed on the front of the shell (1), a limiting workpiece (20) is movably installed on the outer surface of the first limiting column (21), and one end of the limiting workpiece (20) is clamped on the outer surface of the second limiting column (22), and a resistance tester (23) is fixedly installed on the top of the movable plate (13).

2. A waterproof insulation resistance tester according to claim 1, characterized in that: A fixing frame (2) is fixedly installed on the top of the shell (1), a second fixing groove (28) is opened inside the fixing frame (2), a mounting plate (4) is movably installed inside the second fixing groove (28), a support column (5) is fixedly installed on the top of the mounting plate (4), and a rainproof plate (3) is fixedly installed on the top of four support columns (5), a positioning hole (29) is movably installed inside the mounting plate (4), a positioning block (25) is movably installed inside the positioning hole (29), and one end of the positioning block (25) passes through the inside of the fixing frame (2), a box (6) is fixedly installed on the right side of the fixing frame (2), a pull rod (26) is fixedly installed on one end of the positioning block (25), and one end of the pull rod (26) passes through the inside of the box (6), and a second spring (27) is fixedly installed between the positioning block (25) and the box (6).

3. The waterproof insulation resistance tester according to claim 1, characterized in that: Telescopic rods (7) are fixedly mounted on the outside of the housing (1), and the telescopic rods (7) are in the form of a linear array. A fixing plate (9) is fixedly mounted on one end of the telescopic rod (7), a buffer plate (10) is fixedly mounted on the outside of the fixing plate (9), and a first spring (8) is fixedly mounted between the housing (1) and the fixing plate (9).

4. The waterproof insulation resistance tester according to claim 1, characterized in that: Columns (15) are fixedly mounted around the bottom of the shell (1), and a base (16) is fixedly mounted on the bottom of the column (15).

5. The waterproof insulation resistance tester according to claim 1, characterized in that: A fixing seat (17) is fixedly mounted on the back of the housing (1), a fixing block (18) is movably mounted inside the fixing seat (17), and a working box (19) is fixedly mounted on the back of the fixing block (18).

6. The waterproof insulation resistance tester according to claim 5, characterized in that: The outer diameter of the fixing block (18) is equal to the inner diameter of the fixing seat (17), and the interior of the fixing seat (17) has a smooth design.

7. The waterproof insulation resistance tester according to claim 3, characterized in that: The telescopic rods (7) and first springs (8) are arranged in groups of two, with a total of ten groups located between the housing (1) and the fixed plate (9).

8. The waterproof insulation resistance tester according to claim 1, characterized in that: A push rod (12) is fixedly mounted on the front of the cover plate (11), and the outer surface of the push rod (12) is in a U-shape.

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