Insulation resistance tester and method of using the same

Abstract

The present invention belongs to the technical field of electric power equipment, and provides an insulation resistance tester and a method for using the same, wherein the insulation resistance tester comprises a shell and a tester body, wherein the tester body is fixedly mounted at one end of the shell, wherein a placement groove is provided on the shell, and a placement box is slidably mounted in the placement groove, wherein a partition is fixedly mounted in the placement box, and wherein a plurality of groups of dust scraping grooves are provided on the partition to solve the technical problem that the unstable connection between the test equipment and the electrical components in the prior art leads to inaccurate test results, wherein after the test object is placed in the placement box, the scraper is used to scrape and remove impurities on the bottom surface of the test object when the test object moves, and after the test object stops, the area on the bottom surface of the test object corresponding to the dust scraping groove is the area after scraping and cleaning, and the subsequent connecting plate can be in contact and connected with the area after cleaning of the test object, and the present invention can be widely used in the detection operation scene of electrical components.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power equipment, and in particular relates to an insulation resistance tester and a use method thereof. Background Art

[0002] With the increasing number of household electrical facilities, the safety and reliability of power supply are increasingly required. The resistance of some cables and electrical components needs to be measured before they are put into use. The accuracy and reliability of resistance measurement are related to the safety of cables and electrical components during use.

[0003] In the prior art, a handheld test lead is usually used to touch different positions on the cable and electrical components for detection. The operation process is complicated, and during the operation, it is easy to cause multiple detection data to be unstable due to uneven hand force and small and unstable contact area between the test lead and the electrical component, thereby reducing the detection accuracy and reliability of the resistance value. In response to the above technical problems, the applicant has retrieved some prior arts, such as the Chinese patent with patent announcement number CN214622820U. When in use, it can detect multiple groups of resistance values ​​by pushing the fixing mechanism to slide on the base, and the resistance value detection of the electrical component is more accurate. However, since impurities will accumulate on the surface of the electrical component during storage or use, when the fixing mechanism is pushed to slide on the base, the impurities will exist between the connecting parts and the electrical component, which will cause problems in the connection between the test equipment and the electrical component, and thus cause inaccurate test results. Summary of the invention

[0004] The purpose of the present invention is to provide an insulation resistance tester and a method for using the same, aiming to solve the technical problem in the prior art that the connection between the test equipment and the electrical components is unstable, resulting in inaccurate test results.

[0005] The present invention is implemented as follows: an insulation resistance tester comprises a shell and a tester body, the tester body is fixedly mounted on one end of the shell, a placement slot is provided on the shell and a placement box is slidably mounted in the placement slot, a partition is fixedly mounted in the placement box, a plurality of groups of dust scraping slots are provided on the partition, a first slider is slidably mounted in the placement box, a U-shaped push plate is fixedly mounted on the first slider, a rotating plate is rotatably mounted in the placement box, a moving frame is provided on the rotating plate, a plurality of groups of rollers are rotatably mounted in the moving frame, the rotating plate can pass through the push plate when in a horizontal state, and a limiting component for fixing the position of the rotating plate is provided in the placement box;

[0006] A support plate is slidably installed in the placement box and is located between the partition and the bottom surface of the placement box. A plurality of scrapers are fixedly installed on the support plate. The scrapers correspond to the positions of the dust scraping grooves and extend into the dust scraping grooves. The support plate is fixedly connected to the partition through a plurality of second elastic members.

[0007] A plurality of groups of pillars are fixedly installed at the bottom of the shell, and the positions of the pillars correspond to the positions of the dust scraping grooves. A through groove for the pillars to extend into is opened at the bottom of the placement box, and a connecting plate is fixedly installed on the top of the pillars. The connecting plate is connected to the tester body through a control switch, and a pressure plate for pressing down the placement box is provided on the shell.

[0008] Further technical solution: sliding grooves are provided on both side walls of the placement box, a first slider is slidably installed in the sliding groove, two groups of second sliders are slidably installed on the first slider, a second magnetic block is fixedly installed on the second slider, and the second magnetic blocks are adsorbed on the side walls of the placement box when the second magnetic blocks are away from each other, and a strip magnetic part for the second magnetic block to be adsorbed is provided on the side walls of the placement box.

[0009] Further technical solution: a bracket is fixedly installed on the side end face of the shell opening, a slide is slidably installed on the bracket, a push rod is slidably installed on the slide, a thread is arranged on the top of the push rod, the push rod drives the pressure plate to move, and the pressure plate presses down the placement box after contacting the end face of the placement box.

[0010] Further technical solution: the mobile frame is installed on the rotating plate through multiple sets of telescopic rods, a concave structure is provided in the middle of the rotating plate and an adjusting screw is rotatably installed in the concave structure, and the adjusting screw is connected to the mobile frame through a U-shaped plate.

[0011] Further technical solution: The limiting assembly includes a pad, which is fixedly installed in the placement box and located at one end away from the rotating axis of the rotating plate. When the rotating plate is in a horizontal state, its lower surface contacts the upper surface of the pad, and a first magnetic block is slidably installed on the pad.

[0012] Further technical solution: A guide rod is fixedly installed in the placement box, the guide rod passes through the first magnetic block and is in sliding contact with the first magnetic block, the first magnetic block is an L-shaped structure and the first magnetic block adsorbs the first slider when it is in contact with the first slider, and when the rotating plate is in a horizontal state, its upper surface is in contact with the horizontal section of the first magnetic block.

[0013] Further technical solution: a base plate is fixedly installed on the top of the pillar, a connecting plate is fixedly installed on the base plate, a protective plate with a frame structure is slidably installed on the base plate, the base plate is located inside the protective plate, a plurality of dust removal grooves are provided on the surface of the protective plate in contact with the object to be measured, the protective plate passes through the dust scraping groove and a closing plate with a frame structure in sliding contact with the protective plate is fixedly installed on the support plate.

[0014] Further technical solution: Multiple groups of vertical rods are fixedly installed in the protective plate, the vertical rods penetrate the base plate and are slidably connected to the base plate, and a first elastic member distributed around the vertical rods is fixedly installed on the base plate, and the end of the first elastic member away from the base plate is fixedly connected to the top of the vertical rod.

[0015] The present invention also provides a method for using an insulation resistance tester, which is applied to the insulation resistance tester described above and comprises the following steps:

[0016] Step S1: Take out the placement box, push the first slider to move to one end of the placement box, and then open the rotating plate. At this time, the object to be tested can be placed in the placement box;

[0017] Step S2: After the object is placed, the rotating plate is rotated to a horizontal state, and then the movable end of the rotating plate is restricted and fixed by the limit assembly, and then the movable frame is moved downward. When the roller contacts the upper surface of the object, it pushes the object to move downward, and stops moving when the bottom surface of the object contacts the bottom surface of the placement box;

[0018] Step S3: pushing the test object to move by the push plate and scraping and cleaning the bottom surface of the test object by the scraper to complete the fixing of the test object;

[0019] Step S4: placing the placement box into the placement slot and pressing the placement box down through the pressing plate so that the connecting plate is connected to the bottom surface of the test object;

[0020] Step S5: connect two groups of connection plates to the test object and the tester body for testing, and connect more different connection plates to perform multiple groups of testing and comparison.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. After the test object is placed in the placement box, the test object is pressed down by the roller, and the test object is pushed to move by the first slider so that one end of the test object contacts the inner wall of the placement box to complete the fixation of the test object. During the movement of the test object, the scraper is tightly attached to the lower surface of the test object under the action of the second elastic member. When the test object moves, the scraper is used to scrape and remove impurities on the bottom surface of the test object, and after the test object stops, the area on the bottom surface of the test object corresponding to the scraping groove is the scraped and cleaned area. The subsequent connecting plate can be in contact and connected with the cleaned area of ​​the test object, thereby improving the stability of the connection between the connecting plate and the test object, thereby improving the accuracy of resistance detection.

[0023] 2. During the test, the top of the protective plate will contact the lower surface of the test object. At this time, the first elastic member is slightly compressed, and the protective plate, the substrate and the lower surface of the test object will form a cavity. At this time, the protective box is pushed downward by the pressure plate to move. When the protective box moves downward, it pushes the protective plate downward, so that the volume of the cavity gradually decreases. At this time, the air in the cavity will flow outward rapidly through the dust removal groove, and the dust removal groove is close to the lower surface of the test object, and then the air will flow along the lower surface of the test object and leave from the dust removal groove, so that the powder impurities on the lower surface of the test object are cleaned by the fast-flowing air. After the powder impurities are detached, they will follow the flowing air to the outside of the protective plate, further improving the cleanliness of the contact position between the lower surface of the test object and the connecting plate, improving the stability of the connection between the connecting plate and the test object, and improving the accuracy of the resistance test.

[0024] 3. During the test, the resistance of the test object with different lengths can be tested through two sets of different connecting plates, thereby improving the accuracy of the resistance test results of the object, avoiding moving the test object or moving the connection between the connecting component and the test object, improving the efficiency of the resistance test, and avoiding unstable connection caused by movement of the test object or movement of the connecting component, further improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the A1 region in the middle.

[0028] Figure 4 It is a schematic diagram of the structure of the protective plate in the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of placing the box in the present invention.

[0030] Figure 6 It is a schematic cross-sectional view of the placement box in the present invention.

[0031] Figure 7 It is a structural schematic diagram of the support plate in the present invention.

[0032] Figure 8 It is a schematic diagram of the structure of the limiting component in the present invention.

[0033] In the accompanying drawings: 1. Shell; 2. Tester body; 3. Placement slot; 4. Bracket; 5. Slide plate; 6. Lower pressure rod; 7. Pressure plate; 8. Pillar; 9. Base plate; 10. Protective plate; 11. Vertical rod; 12. First elastic member; 13. Connecting plate; 14. Dust removal slot; 15. Placement box; 16. Slide slot; 17. First slider; 18. Push plate; 19. Pad; 20. Guide rod; 21. First magnetic block; 22. Second slider; 23. Second magnetic block; 24. Rotating plate; 25. Adjusting screw; 26. Moving frame; 27. Roller; 28. Support plate; 29. ​​Scraper; 30. Closing plate; 31. Second elastic member; 32. Partition plate; 33. Dust scraping slot; 34. Limiting assembly. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0036] like Figure 1-Figure 8 As shown, an insulation resistance tester provided by the present invention includes a shell 1 and a tester body 2, the tester body 2 is fixedly installed at one end of the shell 1, a placement groove 3 is provided on the shell 1, and a placement box 15 is slidably installed in the placement groove 3, a partition 32 is fixedly installed in the placement box 15, and a plurality of groups of spaced-apart dust scraping grooves 33 are provided on the partition 32, a first slider 17 is slidably installed in the placement box 15, and a slide groove 16 is provided on both side walls of the placement box 15, the first slider 17 is slidably installed in the slide groove 16, two groups of second sliders 22 are slidably installed on the first slider 17, a second magnetic block 23 is fixedly installed on the second slider 22, and the second magnetic block 23 is mutually separated from the side wall of the placement box 15 when the second magnetic block 23 is separated from the side wall of the placement box 15. Adsorption, a strip-shaped magnetic piece for adsorption of the second magnetic block 23 is arranged on the side wall of the placement box 15, a U-shaped push plate 18 is fixedly installed on the first slider 17, a rotating plate 24 is rotatably installed in the placement box 15, a moving frame 26 is arranged on the rotating plate 24, a plurality of groups of rollers 27 are rotatably installed in the moving frame 26, the moving frame 26 is installed on the rotating plate 24 through a plurality of groups of telescopic rods, a concave structure is arranged in the middle of the rotating plate 24, and an adjusting screw 25 is rotatably installed in the concave structure, the adjusting screw 25 is connected to the moving frame 26 through a U-shaped plate, the rotating plate 24 can pass through the push plate 18 when it is in a horizontal state, and a limiting component 34 for fixing the position of the rotating plate 24 is arranged in the placement box 15;

[0037] A support plate 28 is slidably installed in the placement box 15 and is located between the partition plate 32 and the bottom surface of the placement box 15. A plurality of scrapers 29 are fixedly installed on the support plate 28. The scrapers 29 correspond to the positions of the dust scraping grooves 33 and extend into the dust scraping grooves 33. The support plate 28 is fixedly connected to the partition plate 32 through a plurality of second elastic members 31.

[0038] A plurality of groups of pillars 8 are fixedly installed on the bottom of the shell 1, and the positions of the pillars 8 and the dust scraping grooves 33 correspond. A through groove for the pillars 8 to extend into is opened at the bottom of the placement box 15, and a connecting plate 13 is fixedly installed on the top of the pillars 8. The connecting plate 13 is connected to the tester body 2 through a control switch. A pressing plate 7 for pressing down the placement box 15 is provided on the shell 1, and a bracket 4 is fixedly installed on the end face of the opening side of the shell 1, and a slide plate 5 is slidably installed on the bracket 4, and a pressing rod 6 is slidably installed on the slide plate 5. A thread is provided on the top of the pressing rod 6, and the pressing rod 6 drives the pressing plate 7 to move, and the pressing plate 7 presses down the placement box 15 after contacting the end face of the placement box 15.

[0039] In actual application of this embodiment, the placement box 15 is taken out, the first slider 17 is pushed to move to one end of the placement box 15, and then the rotating plate 24 is opened. At this time, the object to be tested can be placed in the placement box 15. In the initial state, the scraper 29 passes through the dust scraping groove 33, and the test object is supported by the scraper 29 in the placement box 15, and the object is located close to the end where the first slider 17 is located;

[0040] After the object is placed, the rotating plate 24 is rotated to a horizontal state, and then the movable end of the rotating plate 24 is restricted and fixed by the limit assembly 34, so that the rotating plate 24 remains in a horizontal state. At this time, the adjusting screw 25 is rotated to drive the moving frame 26 to move downward. When the roller 27 contacts the upper surface of the object, it will push the object to move downward. At this time, the object pushes the support plate 28 downward through the scraper 29 and stretches the second elastic member 31. When the bottom surface of the object contacts the bottom surface of the placement box 15, it stops moving. At this time, the user pinches the two groups of second sliders 22 with the index finger and thumb, and the two groups of second sliders 22 move inward at the same time to make the second magnetic block 23 detach from the fixation with the placement box 15. At this time, the interface The first slider 17 is pushed to move horizontally. When the first slider 17 moves, the push plate 18 pushes the test object to move so that one end of the test object contacts the inner wall of the placement box 15 to complete the fixation of the test object. During the movement of the test object, the scraper 29 is tightly attached to the lower surface of the test object under the action of the second elastic member 31. When the test object moves, the scraper 29 scrapes and removes impurities on the bottom surface of the test object. After the test object stops, the area on the bottom surface of the test object corresponding to the scraping groove 33 is the scraped and cleaned area. The subsequent connecting plate 13 can be in contact with and connected to the cleaned area of ​​the test object, thereby improving the stability of the connection between the connecting plate 13 and the test object, thereby improving the accuracy of resistance detection.

[0041] Then, the placement box 15 is placed in the placement groove 3. At this time, the base plate 9 and the connecting plate 13 enter the placement box 15. The connecting plate 13 passes through the dust scraping groove 33 and contacts the bottom surface of the test object. Then, the slide plate 5 is pushed to move to the middle of the bracket 4. The pressing plate 7 is pushed downward by the pressing rod 6. After the pressing plate 7 contacts the placement box 15, it is pressed tightly in the placement groove 3, so that the test object is tightly connected to the connecting plate 13.

[0042] Then, the tester body 2 is turned on for detection. During the detection, two of the groups of connecting plates 13 connected to the test object and the control switches on the connection line between the tester body 2 are turned on as needed. At this time, the tester body 2 is connected to the test object through the two groups of connecting plates 13 to perform resistance testing. Then, one of the groups of connecting plates 13 is replaced to connect with the test object, so that resistance tests of different lengths can be performed on the test object through two different groups of connecting plates 13, thereby improving the accuracy of the resistance test results of the object, and avoiding moving the test object or moving the connection part and the test object. The efficiency of the resistance test is improved, and the unstable connection caused by the movement of the test object or the movement of the connecting part is avoided, further improving the accuracy of the detection result. After the detection is completed, the placement box 15 is released, and the placement box 15 and the test object can be taken out.

[0043] In an example of this embodiment, the second elastic member 31 is a second spring, and of course it can also be other elastic components such as an elastic ball, and pressure is applied to the scraper 29 through the second spring.

[0044] like Figure 5 , Figure 6 , Figure 8 As shown, an insulation resistance tester provided by the present invention, the limiting assembly 34 includes a pad 19, the pad 19 is fixedly installed in the placement box 15 and is located at one end away from the rotating axis of the rotating plate 24, when the rotating plate 24 is in a horizontal state, its lower surface contacts the upper surface of the pad 19, and a first magnetic block 21 is slidably installed on the pad 19.

[0045] Specifically, a guide rod 20 is fixedly installed in the placement box 15, and the guide rod 20 passes through the first magnetic block 21 and is in sliding contact with the first magnetic block 21. The first magnetic block 21 is an L-shaped structure and the first magnetic block 21 adsorbs the first slider 17 when it contacts the first slider 17. When the rotating plate 24 is in a horizontal state, its upper surface contacts the horizontal section of the first magnetic block 21.

[0046] When the present embodiment is actually applied, after the object to be tested is placed in the placing box 15, the rotating plate 24 is rotated to make it horizontal. At this time, the end of the rotating plate 24 is placed on the pad 19. When the first slider 17 moves, the first magnetic block 21 is adsorbed on the first slider 17, and then the first slider 17 moves, which will drive the first magnetic block 21 to move. When the first magnetic block 21 contacts the end of the rotating plate 24, the first slider 17 continues to move. At this time, the first magnetic block 21 will be separated from the first slider 17 under the restriction of the rotating plate 24, and the first magnetic block 21 will adsorb the end of the rotating plate 24. At this time, the end of the rotating plate 24 can be fixed and restricted by the pad 19 and the first magnetic block 21, ensuring that the rotating plate 24 is in a horizontal state, which is conducive to the subsequent pressing and fixing of the object to be tested. After the test is completed, the first slider 17 is reset. At this time, the first slider 17 will push the first magnetic block 21 to move away from the rotating plate 24, thereby releasing the restriction on the rotating plate 24.

[0047] like Figure 3 , Figure 4 As shown, an insulation resistance tester provided by the present invention is provided, wherein a base plate 9 is fixedly mounted on the top of a pillar 8, a connecting plate 13 is fixedly mounted on the base plate 9, a protective plate 10 of a frame structure is slidably mounted on the base plate 9, the base plate 9 is located inside the protective plate 10, a surface of the protective plate 10 in contact with the object to be measured is provided with a plurality of dust removal grooves 14, the protective plate 10 passes through the dust scraping groove 33 and a closing plate 30 of a frame structure in sliding contact with the protective plate 10 is fixedly mounted on the support plate 28.

[0048] Specifically, multiple groups of vertical rods 11 are fixedly installed in the protective plate 10. The vertical rods 11 pass through the base plate 9 and are slidably connected to the base plate 9. A first elastic member 12 distributed around the vertical rods 11 is fixedly installed on the base plate 9. The end of the first elastic member 12 away from the base plate 9 is fixedly connected to the top of the vertical rod 11.

[0049] In actual application of this embodiment, the placement box 15 is placed in the placement groove 3 and then moves downward. At this time, the substrate 9 and the protective plate 10 will enter the placement box 15. Since the position of the substrate 9 corresponds to the dust scraping groove 33, the top of the protective plate 10 will contact the lower surface of the test object. At this time, the first elastic member 12 is slightly compressed, and the protective plate 10, the substrate 9 and the lower surface of the test object will surround a cavity.

[0050] At this time, the placing box 15 is pushed downward by the pressing plate 7 to move, and when the placing box 15 moves downward, the protective plate 10 is pushed downward, so that the volume of the cavity is gradually reduced. At this time, the air in the cavity will quickly flow outward through the dust removal groove 14, and the dust removal groove 14 is close to the lower surface of the test object, and then the air will flow along the lower surface of the test object and leave from the dust removal groove 14, so that the powder impurities on the lower surface of the test object are cleaned by the fast-flowing air. After the powder impurities are separated, they will follow the flowing air to the outside of the protective plate 10, further improving the cleanliness of the contact position between the lower surface of the test object and the connecting plate 13, improving the stability of the connection between the connecting plate 13 and the test object, and improving the accuracy of the resistance test. After cleaning, the placing box 15 is taken out upward, and at this time, the protective plate 10 is reset under the action of the first elastic member 12;

[0051] After the powder impurities are detached, they will flow to the outside of the protective plate 10 with the flowing air. Since the outside of the protective plate 10 is in sliding contact with the closing plate 30, the impurities can only stay in the placement box 15, avoiding the impurities from accumulating at the bottom of the shell 1, thereby improving the cleanliness of the inside of the shell 1, and the placement box 15 can be cleaned later.

[0052] In an example of the present invention, the first elastic member 12 is a first spring, and of course, it can also be other elastic members such as an elastic ball, and the first spring applies a resetting thrust to the protective plate 10 .

[0053] like Figure 1-Figure 8 As shown, a method for using an insulation resistance tester provided by the present invention is applied to the insulation resistance tester described above, and comprises the following steps:

[0054] Step S1: Take out the placement box 15, push the first slider 17 to move to one end of the placement box 15, and then open the rotating plate 24, and then the object to be tested can be placed in the placement box 15;

[0055] Step S2: After the object is placed, the rotating plate 24 is rotated to a horizontal state, and then the movable end of the rotating plate 24 is restricted and fixed by the limit assembly 34, and then the movable frame 26 is moved downward. When the roller 27 contacts the upper surface of the object, it pushes the object to move downward, and stops moving when the bottom surface of the object contacts the bottom surface of the placement box 15;

[0056] Step S3: The test object is pushed to move by the push plate 18 and the bottom surface of the test object is scraped and cleaned by the scraper 29 to complete the fixing of the test object;

[0057] Step S4: placing the placement box 15 into the placement slot 3 and pressing the placement box 15 downward through the pressing plate 7 so that the connecting plate 13 is connected to the bottom surface of the test object;

[0058] Step S5: connect two groups of connection plates 13 to the test object and the tester body 2 for testing, and connect more different connection plates 13 to perform multiple groups of testing and comparison.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An insulation resistance tester, comprising a housing (1) and a tester body (2), wherein the tester body (2) is fixedly mounted on one end of the housing (1), and characterized in that: The shell (1) is provided with a placement groove (3) and a placement box (15) is slidably installed in the placement groove (3); a partition (32) is fixedly installed in the placement box (15); a plurality of groups of dust scraping grooves (33) are provided on the partition (32) and are spaced apart from each other; a first slider (17) is slidably installed in the placement box (15); a push plate (18) with a U-shaped structure is fixedly installed on the first slider (17); a rotating plate (24) is rotatably installed in the placement box (15); a moving frame (26) is provided on the rotating plate (24); a plurality of groups of rollers (27) are rotatably installed in the moving frame (26); the rotating plate (24) can pass through the push plate (18) when in a horizontal state; and a limiting component (34) for fixing the position of the rotating plate (24) is provided in the placement box (15); A support plate (28) is slidably mounted in the placement box (15) and is located between the partition plate (32) and the bottom surface of the placement box (15). A plurality of scrapers (29) are fixedly mounted on the support plate (28). The scrapers (29) correspond to the positions of the dust scraping grooves (33) and extend into the dust scraping grooves (33). The support plate (28) is fixedly connected to the partition plate (32) via a plurality of second elastic members (31). A plurality of groups of pillars (8) are fixedly mounted on the bottom of the housing (1), the positions of the pillars (8) corresponding to the dust scraping grooves (33), a through groove for the pillars (8) to extend into is provided at the bottom of the placement box (15), a connecting plate (13) is fixedly mounted on the top of the pillars (8), the connecting plate (13) is connected to the tester body (2) via a control switch, and a pressing plate (7) for pressing down the placement box (15) is provided on the housing (1).

2. An insulation resistance tester according to claim 1, characterized in that: The inner side walls of the placement box (15) are provided with slide grooves (16), a first slider (17) is slidably mounted in the slide grooves (16), two groups of second sliders (22) are slidably mounted on the first slider (17), a second magnetic block (23) is fixedly mounted on the second slider (22), and the second magnetic blocks (23) are adsorbed on the side walls of the placement box (15) when the second magnetic blocks (23) are away from each other, and a bar-shaped magnetic piece for the second magnetic block (23) to be adsorbed is provided on the side walls of the placement box (15).

3. An insulation resistance tester according to claim 1, characterized in that: A bracket (4) is fixedly mounted on the end surface of the opening side of the shell (1), a slide plate (5) is slidably mounted on the bracket (4), a pressing rod (6) is slidably mounted on the slide plate (5), a thread is arranged on the top of the pressing rod (6), the pressing rod (6) drives the pressing plate (7) to move, and the pressing plate (7) presses down the placing box (15) after contacting the end surface of the placing box (15).

4. An insulation resistance tester according to claim 1, characterized in that: The movable frame (26) is mounted on the rotating plate (24) via a plurality of telescopic rods; a concave structure is provided in the middle of the rotating plate (24) and an adjusting screw (25) is rotatably mounted in the concave structure; the adjusting screw (25) is connected to the movable frame (26) via a U-shaped plate.

5. The insulation resistance tester according to claim 1, characterized in that: The limiting assembly (34) comprises a pad (19), the pad (19) being fixedly mounted in the placement box (15) and located at an end away from the rotating shaft of the rotating plate (24), the lower surface of the rotating plate (24) being in contact with the upper surface of the pad (19) when the rotating plate (24) is in a horizontal state, and a first magnetic block (21) being slidably mounted on the pad (19).

6. An insulation resistance tester according to claim 5, characterized in that: A guide rod (20) is fixedly installed in the placement box (15), the guide rod (20) passes through the first magnetic block (21) and is in sliding contact with the first magnetic block (21), the first magnetic block (21) is an L-shaped structure, and when the first magnetic block (21) is in contact with the first slider (17), it adsorbs the first slider (17), and when the rotating plate (24) is in a horizontal state, its upper surface is in contact with the horizontal section of the first magnetic block (21).

7. An insulation resistance tester according to claim 1, characterized in that: A base plate (9) is fixedly mounted on the top of the support (8), a connecting plate (13) is fixedly mounted on the base plate (9), a protective plate (10) of a frame structure is slidably mounted on the base plate (9), the base plate (9) is located inside the protective plate (10), a surface of the protective plate (10) in contact with the object to be measured is provided with a plurality of dust removal grooves (14), the protective plate (10) passes through the dust scraping groove (33), and a closing plate (30) of a frame structure in sliding contact with the protective plate (10) is fixedly mounted on the support plate (28).

8. An insulation resistance tester according to claim 7, characterized in that: A plurality of groups of vertical rods (11) are fixedly mounted in the protective plate (10), the vertical rods (11) penetrate the base plate (9) and are slidably connected to the base plate (9), and first elastic members (12) distributed around the vertical rods (11) are fixedly mounted on the base plate (9), and one end of the first elastic member (12) away from the base plate (9) is fixedly connected to the top of the vertical rod (11).

9. A method for using an insulation resistance tester, characterized in that: An insulation resistance tester as claimed in any one of claims 1 to 8, comprising the following steps: Step S1: taking out the placement box (15), pushing the first slider (17) to move to one end of the placement box (15), and then opening the rotating plate (24), at which time the object to be tested can be placed in the placement box (15); Step S2: After the object is placed, the rotating plate (24) is rotated to a horizontal state, and then the movable end of the rotating plate (24) is restricted and fixed by the limit assembly (34), and then the movable frame (26) is moved downward. When the roller (27) contacts the upper surface of the object, it pushes the object to move downward, and stops moving when the bottom surface of the object contacts the bottom surface of the placement box (15); Step S3: pushing the test object to move by means of the push plate (18) and scraping and cleaning the bottom surface of the test object by means of the scraper (29), thereby completing the fixing of the test object; Step S4: placing the placement box (15) into the placement slot (3) and pressing the placement box (15) downwards via the pressing plate (7) so that the connecting plate (13) is connected to the bottom surface of the test object; Step S5: two sets of connection plates (13) are connected to the test object and the tester body (2) for testing, and more different connection plates (13) are connected to perform multiple sets of testing and comparison.

Images