Electric tool insulation detection device

Abstract

The invention discloses an electric tool insulation detection device, and belongs to the technical field of insulation detection, the electric tool insulation detection device comprises a main box body, one side of the main box body is hinged with a protection box cover, the main box body is internally provided with an installation assembly, and the top of the installation assembly is provided with a detection main body. According to the anti-lost cable winding device, the anti-lost arrangement assembly and the rewinding spring are arranged to drive the winding wheel to rotate reversely at a high speed, a balancing weight keeps a ratchet-gear separation limiting state under the action of centrifugal force, it is ensured that the anti-lost cable is automatically reset and wound, and the convenience and reliability of cable management are effectively improved by combining the centrifugal force, damping delay and spring reset; according to the anti-lost cable locking device, the tedious operation of traditional manual locking is avoided, meanwhile, the stability and the response speed of the locking and releasing process are ensured through the dynamic balance design, the automatic locking and reset rolling arrangement functions of the anti-lost cable are achieved, and the situation that the connecting cable is forgotten to be lost after detection is completed is avoided.

Description

Technical Field

[0001] This invention belongs to the field of insulation testing technology, and particularly relates to an insulation testing device for power tools. Background Technology

[0002] In daily life, as power tools are used for longer periods, the insulation performance of the insulating materials may decline due to long-term mechanical wear, humid environment, and high temperature aging, which may lead to leakage, short circuit, or even electric shock accidents. In order to ensure the safety of power tools during use, it is necessary to conduct insulation tests on power tools regularly.

[0003] Document CN222420296U discloses an insulation tool tester, belonging to the field of testing equipment, including a housing, mounting components, and a storage plate. A protective cover is hinged to one side of the top of the housing, and pneumatic support rods are hinged to the inner walls of both sides of the housing and the protective cover. An insulation tester is installed inside the housing. In this invention, the insulation tester is placed on a mounting base inside the housing. Rotating the adjusting wheel drives a bidirectional lead screw to rotate, which in turn moves two threaded sliders closer to the insulation tester. The sliders then drive a clamping plate to clamp and fix the insulation tester inside the housing, preventing it from being directly exposed and thus avoiding damage from collisions with external objects during use. The testing pen is placed in a storage slot on the surface of the storage plate for easy storage. However, in actual use, the connecting cable is detached from the device, making it easy to forget and lose after testing. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide an insulation testing device for power tools, which addresses the problem that the connecting cable is often separated from the device as a whole and is easily forgotten or lost after testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An insulation testing device for power tools includes a main housing, a protective cover hinged to one side of the main housing, an installation assembly inside the main housing, a testing body on the top of the installation assembly, a connection hole on one side of the testing body, a dustproof assembly above the connection hole, two symmetrically distributed anti-loss organizing components on one side of the protective cover, and a connecting cable on one side of the anti-loss organizing components. The anti-loss organizing component includes a fixed box connected to one side of the inner wall of the protective box cover. The fixed box is equipped with a rewinding wheel that can automatically rewind. An anti-loss cable is wound on the rewinding wheel. One end of the anti-loss cable extends to the outside of the fixed box and is connected to a connecting ring. The connecting ring is connected to the connecting cable. A ratchet gear that can slide relative to the rewinding wheel is provided on one side. One side of the ratchet gear engages with a limit rod. One side of the limit rod is hinged to the inner wall of the fixed box.

[0006] As a further description of the above technical solution: Both sides of the winding wheel are connected to connecting shafts, which are rotatably connected to the inner wall of the fixed box. A return spring is connected to the outer surface of one of the connecting shafts, and a fixing rod is connected to the other end of the return spring. One end of the fixing rod is connected to one side of the inner wall of the fixed box, and the ratchet is slidably connected to the connecting shaft.

[0007] As a further description of the above technical solution: A bonding block is attached to one side of the limiting rod. The bonding block has an L-shaped cross-section and is connected to one side of the inner wall of the fixing box. A first spring is connected to one side of the bonding block, and the end of the first spring away from the bonding block is connected to one side of the limiting rod.

[0008] As a further description of the above technical solution: The outer surface of the connecting shaft is connected to a plurality of fixed slots arranged in a circumferential array. One side of the fixed slot is connected to one side of the winding wheel. A counterweight is slidably connected inside the fixed slot. A connecting rod is hinged to one side of the counterweight. A sliding rod is connected to the other end of the connecting rod. The ends of the multiple sliding rods away from the connecting rod are connected to one side of the ratchet gear.

[0009] As a further description of the above technical solution: A damping telescopic rod is connected to one side of the counterweight. The end of the damping telescopic rod away from the counterweight is connected to one side of the inner wall of the fixed slot. A second spring is sleeved on the outer surface of the damping telescopic rod. The two ends of the second spring are respectively connected to one side of the counterweight and one side of the inner wall of the fixed slot. A mounting bracket is connected to one side of the fixed slot. A sliding hole is opened on one side of the mounting bracket. The sliding rod is slidably connected to the sliding hole.

[0010] As a further description of the above technical solution: The dustproof component includes a rotating disk disposed above the connection hole. The rotating disk is rotatably connected to one side of the detection body. One side of the detection body is hinged with multiple closed plates arranged in a circumferential array via a hinge shaft. The multiple closed plates fit together to form a sealed circle.

[0011] As a further description of the above technical solution: A connecting rod is hinged to one side of the closed plate, and a hinge block is hinged to the side of the connecting rod away from the closed plate. One side of the hinge block is connected to one side of the inner wall of the rotating disk.

[0012] As a further description of the above technical solution: The mounting assembly includes a base plate connected to the bottom of the inner wall of the main box. A movable groove is provided on the top of the base plate, and a positive and negative lead screw is rotatably connected in the movable groove. Two symmetrically arranged lead screw seats are connected to the outer surface of the positive and negative lead screws. A limit mounting plate is connected to the top of the lead screw seats. Multiple through holes are provided on one side of the limit mounting plate. The positive and negative lead screws are symmetrically distributed along their own center position, and the thread directions on both sides are opposite.

[0013] As a further description of the above technical solution: A second bevel gear is connected to the center of the positive and negative lead screws. A first bevel gear is meshed with one side of the second bevel gear. A rotating rod is connected to one side of the first bevel gear. The rotating rod extends to the outside of the main box and is connected to a knob. A plurality of slots arranged in a circular array are opened on one side of the main box. Two symmetrically arranged locking blocks are connected to one side of the knob. The locking blocks and the slots are engaged with each other.

[0014] As a further description of the above technical solution: The protective box cover has two symmetrically arranged upper buckles on one side, and the main box body has two symmetrically arranged lower buckles on one side. The upper and lower buckles are compatible with each other, and a handle is connected to one side of the main box body.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by setting up an anti-loss organizing component, and through the coordinated operation of the connecting cable, connecting ring, anti-loss cable, winding wheel, rewind spring, fixing slot, mounting bracket, sliding rod, ratchet, and limit rod, when the connecting cable is pulled, the winding wheel rotates in one direction, and the counterweight, under the action of centrifugal force, drives the ratchet to separate from the limit rod, ensuring smooth winding. When the connecting cable is stationary, the counterweight slowly resets under the action of the damping telescopic rod and the first spring, causing the ratchet to re-engage with the limit rod, realizing automatic locking of the anti-loss cable position and preventing rebound. After the detection is completed, then... The second pull on the connecting cable quickly separates the ratchet from the limit rod. The rewind spring drives the winding wheel to reverse at high speed, and the counterweight keeps the ratchet out of the limit state under the action of centrifugal force, ensuring that the anti-loss cable automatically resets and rewinds. Combining centrifugal force, damping delay, and spring reset, the convenience and reliability of cable management are effectively improved, avoiding the cumbersome operation of traditional manual locking. At the same time, the dynamic balance design ensures the stability and response speed of the locking and releasing process, realizing the automatic locking, resetting, and rewinding functions of the anti-loss cable, preventing the connecting cable from being forgotten or lost after detection.

[0016] 2. In this invention, by setting up an installation component, the rotary rod and bevel gear set driven by the knob drive the positive and negative lead screws to rotate, realizing the synchronous movement of the lead screw seat and the limit mounting plate away from each other, so that the detection body can quickly release the limit, significantly improving the disassembly and assembly efficiency. The meshing and locking mechanism of the slot and the block effectively fixes the position of the first bevel gear, ensuring that the positive and negative lead screws remain stable in the non-operation state, enhancing the limit reliability of the detection body. The through hole structure of the limit mounting plate optimizes the heat dissipation path, reduces the working temperature of the detection body, and extends the service life of the equipment.

[0017] 3. In this invention, by setting up a dustproof component and through the linkage mechanism between detecting leakage of the main body and the rotating disk, the automatic opening of the sealing plate and the precise exposure of the connection hole are realized, ensuring that the connection hole is effectively protected in the non-working state, effectively preventing dust and impurities from entering the connection hole and causing damage to the connection hole, thereby extending the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of a partial three-dimensional disassembled structure in this invention; Figure 4 This is a schematic diagram of the installation components in this invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section A; Figure 6 This is a three-dimensional structural diagram of the dustproof component in this invention; Figure 7 This is a three-dimensional cross-sectional view of the anti-loss organizing component in this invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram of section B; Figure 9 This is a schematic diagram of the three-dimensional structure of the anti-loss and organizing component in this invention; Figure 10 This is a three-dimensional structural diagram of the anti-loss organizing component in this invention from another perspective.

[0019] Legend: 1. Protective box cover; 2. Upper buckle; 3. Connecting cable; 4. Anti-loss organizing component; 401. Fixing box; 402. Connecting ring; 403. Anti-loss cable; 404. Ratchet; 405. Connecting shaft; 406. Rewinding wheel; 407. Limiting rod; 408. First spring; 409. Adhesive block; 410. Sliding rod; 411. Mounting bracket; 412. Fixing slot; 413. Connecting rod; 414. Counterweight; 415. Damping telescopic rod; 416. Second spring; 417. Fixed... 418. Fixed rod; 5. Rewind spring; 6. Dustproof assembly; 7. Rotary disc; 8. Sealing plate; 9. Linking rod; 10. Hinge block; 11. Hinge shaft; 12. Lower buckle; 13. Main box; 14. Mounting assembly; 15. Knob; 16. Base plate; 17. Slot; 18. Limiting mounting plate; 19. Lead screw seat; 20. Positive and negative lead screws; 21. First bevel gear; 22. Second bevel gear; 23. Locking block; 24. Handle; 25. Detection body. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 The present invention provides a technical solution: An insulation testing device for power tools includes a main housing 7, a protective cover 1 hinged to one side of the main housing 7, an installation component 8 inside the main housing 7, a testing body 10 on the top of the installation component 8, a connection hole on one side of the testing body 10, a dustproof component 5 above the connection hole, two symmetrically distributed anti-loss organizing components 4 on one side of the protective cover 1, a connecting cable 3 on one side of the anti-loss organizing components 4, two symmetrically arranged upper buckles 2 connected to one side of the protective cover 1, two symmetrically arranged lower buckles 6 connected to one side of the main housing 7, the upper buckles 2 and lower buckles 6 being mutually compatible, and a handle 9 connected to one side of the main housing 7.

[0022] The anti-loss organizing component 4 includes a fixed box 401, which is connected to one side of the inner wall of the protective box cover 1. The fixed box 401 contains an automatically rewinding take-up wheel 406, on which an anti-loss cable 403 is wound. One end of the anti-loss cable 403 extends to the outside of the fixed box 401 and is connected to a connecting ring 402, which is connected to the connecting cable 403. A ratchet 404 is provided on one side of the take-up wheel 406, which can slide relative to the fixed box 401. One side of the ratchet 404 engages with a limit rod 407, and one side of the limit rod 407 is connected to the fixed box 401. The inner wall of the fixed box 401 is hinged. Connecting shafts 405 are connected to both sides of the winding wheel 406. The connecting shafts 405 are rotatably connected to the inner wall of the fixed box 401. A return spring 418 is connected to the outer surface of one of the connecting shafts 405. A fixing rod 417 is connected to the other end of the return spring 418. One end of the fixing rod 417 is connected to one side of the inner wall of the fixed box 401. A ratchet gear 404 is slidably connected to the connecting shaft 405. A fitting block 409 is attached to one side of the limiting rod 407. The fitting block 409 has an L-shaped cross-section. The fitting block 409 is attached to the fixed box. One side of the inner wall of 401 is connected to the first spring 408, and the end of the first spring 408 away from the adhesive block 409 is connected to the limit rod 407. Multiple fixed slots 412 arranged in a circular array are connected to the outer surface of the connecting shaft 405. One side of the fixed slot 412 is connected to the winding wheel 406. A counterweight 414 is slidably connected inside the fixed slot 412. A connecting rod 413 is hinged to one side of the counterweight 414, and a sliding rod 410 is connected to the other end of the connecting rod 413. Multiple sliding rods 410 are located away from the connecting rod 407. One end of the rod 413 is connected to one side of the ratchet 404. A damping telescopic rod 415 is connected to one side of the counterweight 414. The end of the damping telescopic rod 415 away from the counterweight 414 is connected to one side of the inner wall of the fixed slot 412. A second spring 416 is sleeved on the outer surface of the damping telescopic rod 415. The two ends of the second spring 416 are respectively connected to one side of the counterweight 414 and one side of the inner wall of the fixed slot 412. A mounting bracket 411 is connected to one side of the fixed slot 412. A sliding hole is opened on one side of the mounting bracket 411. The sliding rod 410 is slidably connected to the sliding hole.

[0023] The specific implementation method is as follows: By setting up the anti-loss organizing component 4, and through the linkage of the connecting cable 3, connecting ring 402, anti-loss cable 403, winding wheel 406, rewind spring 418, fixing slot 412, mounting bracket 411, sliding rod 410, ratchet 404 and limiting rod 407, when the connecting cable 3 is pulled, the winding wheel 406 rotates in one direction and the counterweight 414 drives the ratchet 404 to separate from the limiting rod 407 under the action of centrifugal force, ensuring smooth winding. When the connecting cable 3 is stationary, the counterweight 414 slowly resets under the action of the damping telescopic rod 415 and the first spring 408, so that the ratchet 404 re-engages with the limiting rod 407, realizing the position of the anti-loss cable 403. The automatic locking mechanism prevents rebound. After the test is completed, pulling the connecting cable 3 again can quickly separate the ratchet 404 from the limit rod 407. The rewind spring 418 drives the winding wheel 406 to reverse at high speed. The counterweight 414 keeps the ratchet 404 out of the limit state under the action of centrifugal force, ensuring that the anti-loss cable 403 automatically resets and rewinds. Combining centrifugal force, damping delay and spring reset, the convenience and reliability of cable management are effectively improved, avoiding the cumbersome operation of traditional manual locking. At the same time, the dynamic balance design ensures the stability and response speed of the locking and releasing process, realizing the automatic locking and reset rewinding function of the anti-loss cable 403, and preventing the connecting cable 3 from being forgotten or lost after the test is completed.

[0024] The mounting assembly 8 includes a base plate 802, which is connected to the bottom of the inner wall of the main box 7. A movable groove is provided on the top of the base plate 802, and a positive and negative lead screw 806 is rotatably connected in the movable groove. Two symmetrically arranged lead screw seats 805 are connected to the outer surface of the positive and negative lead screw 806. A limit mounting plate 804 is connected to the top of the lead screw seat 805. Multiple through holes are provided on one side of the limit mounting plate 804. The positive and negative lead screws 806 are symmetrically distributed along their own center position, and the threads on both sides are opposite. A second bevel gear 808 is connected to the center position of the positive and negative lead screws 806. A first bevel gear 807 is meshed on one side of the second bevel gear 808. A rotating rod is connected to one side of the first bevel gear 807. The rotating rod extends to the outside of the main box 7 and is connected to a knob 801. Multiple slots 803 arranged in a circular array are provided on one side of the main box 7. Two symmetrically arranged locking blocks 809 are connected to one side of the knob 801. The locking blocks 809 and the slots 803 are engaged with each other.

[0025] The specific implementation method is as follows: By setting the mounting component 8, the knob 801 drives the rotating rod and the bevel gear set to drive the positive and negative lead screws 806 to rotate, realizing the synchronous movement of the lead screw seat 805 and the limiting mounting plate 804 away, so that the detection body 10 can be quickly released from the limit, significantly improving the disassembly and assembly efficiency. The meshing and locking mechanism of the slot 803 and the block 809 effectively fixes the position of the first bevel gear 807, ensuring that the positive and negative lead screws 806 remain stable in the non-operation state, enhancing the limiting reliability of the detection body 10. The through hole structure of the limiting mounting plate 804 optimizes the heat dissipation path, reduces the working temperature of the detection body 10, and extends the service life of the equipment.

[0026] The dustproof component 5 includes a rotating disk 501 disposed above the connection hole. The rotating disk 501 is rotatably connected to one side of the detection body 10. A plurality of closed plates 502 arranged in a circular array are hinged to one side of the detection body 10 via a hinge shaft 505. The multiple closed plates 502 are fitted together to form a sealed circle. A connecting rod 503 is hinged to one side of the closed plate 502. A hinge block 504 is hinged to the side of the connecting rod 503 away from the closed plate 502. One side of the hinge block 504 is connected to one side of the inner wall of the rotating disk 501.

[0027] The specific implementation method is as follows: by setting up the dustproof component 5, and through the linkage mechanism between the detection body 10 and the rotating disk 501, the automatic opening of the sealing plate 502 and the precise exposure of the connection hole are realized, ensuring that the connection hole is effectively protected in the non-working state, effectively preventing dust and impurities from entering the connection hole and causing damage to the connection hole, thereby extending the service life of the equipment.

[0028] Working principle: When in use, the operator separates the upper buckle 2 from the lower buckle 6 and separates the protective cover 1 from the main body 7, so that the detection body 10 is exposed. Then, the operator rotates the rotating disk 501, which drives the connecting rod 503 to move. The connecting rod 503 drives the sealing plate 502 to rotate around the hinge shaft 505, so that the sealing plates 502, which were originally attached to each other, open, thus exposing the connection hole. The operator inserts one end of the connecting cable 3 into the connection hole and connects the other end of the connecting cable 3 to the power tool.

[0029] During the pulling process of connecting cable 3, connecting cable 3 drives connecting ring 402 to move, connecting ring 402 drives anti-loss cable 403 to move, anti-loss cable 403 drives take-up wheel 406 to rotate, take-up wheel 406 drives return spring 418 to wind up, and at the same time, take-up wheel 406 drives ratchet 404 to rotate through fixed slot 412, mounting bracket 411 and sliding rod 410. At this time, due to the one-way limit achieved by the cooperation of ratchet 404 and limit rod 407, take-up wheel 406 can rotate unidirectionally without being affected. At the same time, take-up wheel 406 drives fixed slot 412, mounting bracket 411 and sliding rod 410 to wind up, and take-up wheel 406 drives ratchet 404 to rotate through fixed slot 412, mounting bracket 411 and sliding rod 410. At this time, due to the one-way limit achieved by the cooperation of ratchet 404 and limit rod 407, take-up wheel 406 can rotate unidirectionally without being affected. The slot seat 412 and the damping telescopic rod 415 drive the counterweight 414 to move outward. The counterweight 414, through the connecting rod 413 and the sliding rod 410, drives the ratchet 404 to move closer to the take-up reel 406. At this time, the ratchet 404 separates from the limit rod 407. When the connecting cable 3 moves to the appropriate position, the operator holds the connecting cable 3 still for a period of time. At this time, the anti-loss cable 403 drives the take-up reel 406 to stop rotating, the counterweight 414 loses centrifugal force and makes a reset movement under the action of the first spring 408. At this time, the damping telescopic rod 415 performs damping. By delaying the reset time of the counterweight 414, the ratchet 404 can be slowly reset, allowing the limit rod 407 to re-limit the ratchet 404 in one direction, preventing the ratchet 404 from rotating back. This achieves automatic locking of the anti-loss cable 403. After the test is completed, the operator separates the connecting cable 3 from the power tool and pulls the connecting cable 3 a certain distance again, causing the connecting cable 3 to drive the winding wheel 406 to rotate rapidly through the anti-loss cable 403. This rotation is then driven by the linkage effect of the counterweight 414, connecting rod 413, and sliding rod 410. After the ratchet 404 separates from the limit rod 407, the rewind spring 418 drives the take-up wheel 406 to rotate in the opposite direction via the connecting shaft 405. The counterweight 414 can slowly reset under the action of the second spring 416 and the damping telescopic rod 415. Before it resets, the take-up wheel 406 rotates in the opposite direction at high speed, causing the counterweight 414 to expand outward again under the action of centrifugal force, and driving the ratchet 404 and the limit rod 407 away from each other, so that the take-up wheel 406 can automatically rotate without the influence of the ratchet 404, thereby realizing the automatic reset and rewinding of the anti-loss cable 403.

[0030] When the testing body 10 needs maintenance, the operator turns the knob 801. The knob 801 drives the rotating rod to rotate, which in turn drives the first bevel gear 807 to rotate. The first bevel gear 807 drives the second bevel gear 808 to rotate, which in turn drives the positive and negative lead screws 806 to rotate. The positive and negative lead screws 806 drive the lead screw seat 805 to move away from each other, and the lead screw seat 805 drives the limit mounting plate 804 to move away from each other, thus releasing the limit on the testing body 10. This allows the testing body 10 to be easily removed, enabling quick disassembly and assembly. The design of the slot 803 and the locking block 809 can lock the position of the first bevel gear 807, thereby ensuring that the position of the positive and negative lead screws 806 does not change, improving the stability of the limit on the testing body 10. The through hole on one side of the limit mounting plate 804 can improve the heat dissipation effect of the testing body 10 during operation.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An insulation testing device for power tools, comprising a main housing (7), wherein a protective cover (1) is hinged to one side of the main housing (7), characterized in that, The main box (7) is provided with an installation component (8), the top of the installation component (8) is provided with a detection body (10), the detection body (10) is provided with a connection hole on one side, the connection hole is provided with a dustproof component (5), the protective box cover (1) is provided with two symmetrically distributed anti-loss organizing components (4) on one side, and the anti-loss organizing component (4) is provided with a connecting cable (3) on one side. The anti-loss organizing component (4) includes a fixed box (401), which is connected to one side of the inner wall of the protective box cover (1). The fixed box (401) is provided with a winding wheel (406) that can automatically rewind. An anti-loss cable (403) is wound on the winding wheel (406). One end of the anti-loss cable (403) extends to the outside of the fixed box (401) and is connected to a connecting ring (402). The connecting ring (402) is connected to the connecting cable (3). A ratchet (404) that can slide relative to the winding wheel (406) is provided on one side. One side of the ratchet (404) meshes with a limit rod (407). One side of the limit rod (407) is hinged to the inner wall of the fixed box (401).

2. The power tool insulation testing device according to claim 1, characterized in that, The winding wheel (406) is connected to a connecting shaft (405) on both sides. The connecting shaft (405) is rotatably connected to the inner wall of the fixed box (401). A rewind spring (418) is connected to the outer surface of one of the connecting shafts (405). A fixing rod (417) is connected to the other end of the rewind spring (418). One end of the fixing rod (417) is connected to one side of the inner wall of the fixed box (401). The ratchet gear (404) is slidably connected to the connecting shaft (405).

3. The power tool insulation testing device according to claim 1, characterized in that, A fitting block (409) is attached to one side of the limiting rod (407). The fitting block (409) has an L-shaped cross-section. The fitting block (409) is connected to one side of the inner wall of the fixing box (401). A first spring (408) is connected to one side of the fitting block (409). The end of the first spring (408) away from the fitting block (409) is connected to one side of the limiting rod (407).

4. The power tool insulation testing device according to claim 2, characterized in that, The outer surface of the connecting shaft (405) is connected to a plurality of fixed slots (412) arranged in a circular array. One side of the fixed slot (412) is connected to one side of the winding wheel (406). A counterweight (414) is slidably connected inside the fixed slot (412). A connecting rod (413) is hinged to one side of the counterweight (414). A sliding rod (410) is connected to the other end of the connecting rod (413). The ends of the multiple sliding rods (410) away from the connecting rod (413) are connected to one side of the ratchet (404).

5. The power tool insulation testing device according to claim 4, characterized in that, A damping telescopic rod (415) is connected to one side of the counterweight (414). The end of the damping telescopic rod (415) away from the counterweight (414) is connected to one side of the inner wall of the fixed slot (412). A second spring (416) is sleeved on the outer surface of the damping telescopic rod (415). The two ends of the second spring (416) are respectively connected to one side of the counterweight (414) and one side of the inner wall of the fixed slot (412). A mounting bracket (411) is connected to one side of the fixed slot (412). A sliding hole is opened on one side of the mounting bracket (411), and the sliding rod (410) is slidably connected to the sliding hole.

6. The power tool insulation testing device according to claim 1, characterized in that, The dustproof component (5) includes a rotating disk (501) disposed above the connection hole. The rotating disk (501) is rotatably connected to one side of the detection body (10). One side of the detection body (10) is hinged with a plurality of closed plates (502) arranged in a circular array through a hinge shaft (505). The plurality of closed plates (502) can be fitted together to form a sealed circle.

7. The power tool insulation testing device according to claim 6, characterized in that, A connecting rod (503) is hinged to one side of the closed plate (502), and a hinge block (504) is hinged to the side of the connecting rod (503) away from the closed plate (502). One side of the hinge block (504) is connected to one side of the inner wall of the rotating disk (501).

8. The power tool insulation testing device according to claim 1, characterized in that, The mounting assembly (8) includes a base plate (802), which is connected to the bottom of the inner wall of the main box (7). The base plate (802) has a moving groove on its top, and a positive and negative lead screw (806) is rotatably connected in the moving groove. The outer surface of the positive and negative lead screw (806) is connected to two symmetrically arranged lead screw seats (805). The top of the lead screw seat (805) is connected to a limiting mounting plate (804). The limiting mounting plate (804) has multiple through holes on one side. The positive and negative lead screws (806) are symmetrically distributed along their own center position, and the threads on both sides are opposite in direction.

9. The power tool insulation testing device according to claim 8, characterized in that, The center of the positive and negative lead screw (806) is connected to a second bevel gear (808), and a first bevel gear (807) is meshed with one side of the second bevel gear (808). A rotating rod is connected to one side of the first bevel gear (807), and the rotating rod extends to the outside of the main box (7) and is connected to a knob (801). A plurality of slots (803) arranged in a circular array are opened on one side of the main box (7). Two symmetrically arranged locking blocks (809) are connected to one side of the knob (801), and the locking blocks (809) and the slots (803) are engaged with each other.

10. The power tool insulation testing device according to claim 1, characterized in that, The protective box cover (1) has two symmetrically arranged upper buckles (2) connected to one side, and the main box body (7) has two symmetrically arranged lower buckles (6) connected to one side. The upper buckles (2) and lower buckles (6) are compatible with each other, and the main box body (7) has a handle (9) connected to one side.

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