A varistor testing device

Abstract

The present invention belongs to the field of lightning protection detection, and specifically relates to a varistor testing device, which includes a tester body; a controller is slidably connected to the inner side wall of the tester body; a rotating shaft is rotatably connected to the inner side wall of the tester body; the waterproof strip is fixed on the sealing cover plate. When encountering rainy or snowy weather, the waterproof strip is tightly pressed against the top of the tester body to achieve the effect of waterproofing the inside of the tester body. Combined with the diversion of the diversion groove, the residual moisture is reduced. The clamping plate is pressed and clamped inside the fixed block to achieve the effect of sealing the top of the tester body. When the tester body is opened for use, since a small amount of rainwater adheres to the top of the tester body, the fan rotates to extract air and discharges it from multiple air guide holes, achieving the effect of air drying and heat dissipation for the top of the tester body. The waterproof cover plate is used to block the round hole of the sealing cover plate to reduce the overflow of rain and snow, and the plugging plate is used to block the air vent to achieve the effect of adapting to opening and closing.

Description

Technical Field

[0001] The present invention belongs to the field of lightning protection detection, and specifically relates to a varistor testing device. Background Art

[0002] The varistor tester, also known as a lightning protection component tester, is a testing instrument for the DC parameters of overvoltage protection components of zinc oxide lightning arresters, and has functions such as overcurrent protection and high voltage preset.

[0003] When using the varistor tester, it is necessary to first connect the tester to the varistor to be tested, connect to the AC220V, 50HZ power supply, turn on the power switch, and both the voltage and current displays are "000". Then turn on the high voltage and adjust the voltage to the required value for testing.

[0004] When replacing a damaged varistor outdoors, it is necessary to conduct lightning protection tests on the damaged varistor and the new varistor. Since extreme rainfall or even snowfall and other weather conditions are often encountered outdoors, the current protection performance of varistor testing instruments is poor, and rainwater is likely to seep into the interior of the varistor testing instrument, thereby damaging the internal parts of the instrument and affecting the normal use of the varistor testing instrument.

[0005] Therefore, the present invention provides a varistor testing device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A varistor testing device of the present invention includes a tester body; a controller is slidably connected to the inner side wall of the tester body; a rotating shaft is rotatably connected to the inner side wall of the tester body; a sealing cover plate is fixedly connected to the outside of the rotating shaft; a waterproof strip is fixedly connected to the inner side wall of the sealing cover plate; a diversion groove is opened at the top end of the tester body; a limiting component is arranged outside the tester body, and the limiting component is used to fix the sealing cover plate; the square waterproof strip is fixed on the sealing cover plate, and the controller slides on the inner wall of the tester body and is connected by wires for testing and controlling use. When carrying, rotate the sealing cover plate, and the sealing cover plate rotates along with the rotating shaft on the inner side wall of the tester body, presses on the top end of the tester body, and cooperates with the limiting component to fix the sealing cover plate, so that the waterproof strip is tightly pressed on the top end of the tester body. When encountering rainfall or snowfall weather, part of the rain and snow seeps in from the gap between the tester body and the sealing cover plate, and a large amount of water will be drained out from the diversion groove, and part of the water will be blocked by the waterproof strip, achieving the effect of preventing water from seeping in, reducing the impact of rain and snow on the internal parts, and facilitating the use of the tester body for outdoor varistor testing.

[0008] Preferably, the limiting component includes a fixed block, a limiting insertion plate, a first bolt, and a clamping plate; the fixed block is fixedly connected to the outside of the tester body; the limiting insertion plate is slidably connected to the inner side wall of the fixed block; the first bolt is threadedly connected to the inner side wall of the fixed block and penetrates through the limiting insertion plate; the clamping plate is fixedly connected to the outside of the sealing cover plate; when the sealing cover plate is rotated and covered on the top of the tester body, the clamping plate slides into the inner groove of the fixed block accordingly. The operator inserts the limiting insertion plate into the inner side wall of the fixed block and slides it, and cooperates with the first bolt to threadedly penetrate through the limiting insertion plate and fix it inside the fixed block, achieving the effect of limiting the clamping plate, sealing the top of the tester body, and reducing the infiltration of moisture.

[0009] Preferably, a round hole is provided on the inner side wall of the sealing cover plate; a fixed frame is fixedly connected to the inner side wall of the sealing cover plate and is located within the round hole; a motor is fixedly connected to the outside of the fixed frame; an output end of the motor is fixedly connected to a fan; a plurality of air guide holes are provided on the outside of the sealing cover plate, and the air guide holes are inclined downward; after removing the limiting insertion plate and rotating the sealing cover plate, the output end of the motor on the fixed frame rotates, driving the fan to draw air into the cavity of the sealing cover plate and blow it out from the plurality of air guide holes. By using the downward diversion of the air guide holes, the wind blows onto the controller and the outside, achieving the effect of drying the surroundings of the controller, reducing the residual moisture, further reducing the infiltration of rainwater. At the same time, when the tester body is used for a long time, a large number of components in the controller generate heat energy. By using the fan to draw air and blow it out from the air guide holes, the effect of dissipating heat at the top of the tester body can be achieved.

[0010] Preferably, a waterproof cover plate is fixedly connected to the outside of the sealing cover plate and is located at the round hole; four ventilation holes are provided on the outside of the waterproof cover plate; a rotating handle is rotatably connected to the inner side wall of the waterproof cover plate; four blocking plates are fixedly connected to the outside of the rotating handle; by using the waterproof cover plate to be fixed at the round hole on the outside of the sealing cover plate, it plays a shielding effect. Hold the outside of the rotating handle and rotate it, driving the four blocking plates to rotate. If the four blocking plates block the four ventilation holes, the effect of blocking the round hole of the sealing cover plate can be achieved. If the ventilation holes are not blocked, it can cooperate with the rotation of the fan to achieve the effects of air extraction and ventilation.

[0011] Preferably, a plurality of supporting arc rods are slidably connected to the inner side wall of the tester body, and one end of each supporting arc rod is fixedly connected to the outside of the sealing cover plate; a first elastic member is fixedly connected to the bottom end of each supporting arc rod; by using a plurality of first elastic members to support a plurality of supporting arc rods, and using the supporting arc rods to support and limit the sealing cover plate, the effect of auxiliary support for the sealing cover plate is achieved.

[0012] Preferably, a rubber column is fixedly connected to the inner side wall of the tester body; a second elastic member is sleeved outside the rubber column; the top end of the rubber column is fixedly connected with a sliding plate, and the sliding plate is slidably connected to the inner side wall of the tester body; the top end of the sliding plate is fixedly connected with a sponge pad; a gravity sensor is installed inside the tester body, and the gravity sensor is signal-connected to the motor; a limiting hole is formed inside the tester body; a matching sliding plate is fixedly connected to the outside of the sliding plate; a second bolt is threadedly connected to the inner side wall of the tester body and penetrates through the matching sliding plate; the rubber column is used to fix and support inside the tester body, and cooperates with the second elastic member to jack up the sliding plate. The controller is placed on the sponge pad. When the sealing cover plate is opened, the rubber column and the second elastic member reset elastically, driving the controller on the sliding plate to slide upward, facilitating the removal and use of the controller. At the same time, when the sliding plate slides upward, it moves away from the gravity sensor. After the gravity sensor loses gravity, it transmits a signal to the motor, causing the motor to work and driving the fan to draw air into the sealing cover plate, achieving the effect of induction air drying and heat dissipation. The matching sliding plate is fixed to the outside of the sliding plate and slides on the inner side wall of the tester body. When the controller is stored, the second bolt penetrates through the matching sliding plate and is threadedly connected to the limiting hole to limit the sliding plate, protecting the controller. When using the controller, the second bolt can be threadedly removed.

[0013] Preferably, a plurality of limiting grooves are formed on the outside of the controller; a sliding insertion block is slidably connected to the inner side wall of the tester body; a convex block is fixedly connected to the top end of the sliding insertion block; a holding handle is fixedly connected to the outside of the tester body; a plurality of rubber finger sleeves are fixedly connected to the outside of the holding handle; the sliding insertion block is inserted into the limiting grooves on the outside of the controller for limiting. When it is used after the sealing cover plate is rotated and opened, the convex block can be toggled to drive the sliding insertion block to slide into the limiting grooves below the controller for limiting, preventing the controller from being directly ejected by the elastic force when the sealing cover plate is opened and even being damaged by friction on the outside of the sealing cover plate. The holding handle is fixed to the outside of the tester body, facilitating the operator to hold, and a plurality of rubber finger sleeves are fixed to the outside of the holding handle. The operator can insert fingers into the plurality of rubber finger sleeves one by one to achieve the effect of auxiliary holding, preventing falling when walking outdoors in rainy or snowy weather and thus damaging the tester body.

[0014] Preferably, a storage groove is formed in the side wall of the controller, and three magnetic connection blocks are installed on the inner side wall of the controller and located in the storage groove; a magnetic plug is inserted into the magnetic connection block; when the magnetic connection block and the magnetic plug approach each other, they can attract each other with opposite polarities; a cable is fixedly connected to the outside of the magnetic plug; a test chuck is fixedly connected to the end of the cable; by respectively installing three magnetic connection blocks on the inner side wall of the controller and inserting the magnetic plug into the three magnetic connection blocks respectively by relying on the magnetic attraction with the magnetic connection block, the stability of the magnetic plug insertion is improved, and the test chuck is connected through the cable and pulled out of the inside of the controller and clamped on the varistor, which is convenient for clamping and testing the varistor. At the same time, by using the formed storage groove, it can waterproof the multiple magnetic connection blocks in the storage groove and is also convenient for storing them inside the controller.

[0015] Preferably, a fixed rod is fixedly connected to the inner side wall of the controller; three winding wheels are rotatably connected to the inner side wall of the fixed rod through three torsion springs, and the three cables are respectively wound around the three winding wheels; the fixed rod is fixed on the inner side wall of the control screen, and the three winding wheels are respectively rotatably connected to the inner wall of the fixed rod. The multiple cables are respectively wound around the multiple winding wheels in sequence. When the test chuck is pulled and clamped on the varistor, the winding wheel rotates on the fixed rod accordingly, and the torsion spring is stressed. When the test is completed, the torsion spring rotates in place, driving the winding wheel to wind up the cable, which plays a role in facilitating storage and reduces the winding of multiple cables, thus affecting the test data.

[0016] Preferably, two jacks are formed in the inner side wall of the controller; a sealing cover plate is arranged at the top end of the test chuck; two insertion rods are fixedly connected to the bottom end of the sealing cover plate, and the insertion rods correspond to the jacks; the sealing cover plate is covered and installed at the top end of the test chuck, and the two insertion rods are inserted into the corresponding two jacks, which plays a role in shielding multiple test chucks and reduces the occurrence of water short circuit at the test site.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For a varistor test device of the present invention, by fixing the waterproof strip on the sealing cover plate, when encountering rainy or snowy weather, the waterproof strip is tightly pressed on the top end of the tester body, which plays a role in waterproofing the inside of the tester body. With the diversion of the diversion groove, the residual water is reduced. The clamping plate is pressed and clamped inside the fixed block, which plays a role in sealing the top end of the tester body. When the tester body is opened for use, since a small amount of rainwater adheres to the top end of the tester body, the fan rotates to draw air and discharges it from multiple air guide holes, which plays a role in drying and dissipating heat from the top end of the tester body. The waterproof cover plate shields the round hole of the sealing cover plate to reduce the overflow of rain and snow, and the plugging plate blocks the air vent, which plays a role in adapting to opening and closing.

[0019] 2. The varistor testing device of the present invention squeezes and supports the arc rod through multiple groups of first elastic members. When the sealing cover plate rotates and opens, it plays a role in supporting the sealing cover plate. The sliding plate is supported by the rubber column and the second elastic member, and the controller is lifted and slides on the inner side wall of the tester body, facilitating the operator to take out the controller for use. When the controller is stored, the second bolt passes through and cooperates with the sliding plate and is inserted into the limiting hole, playing a role in limiting the sliding plate. At the same time, the sliding insertion block is inserted into the limiting groove to limit the controller, preventing the controller from rubbing against the outside of the sealing cover plate and being squeezed out when the sealing cover plate is opened. Finally, the holding handle is fixed outside the tester body, playing a role in being portable in rainy and snowy weather.

[0020] 3. The varistor testing device of the present invention improves the stability of the magnetic plug insertion through the magnetic attraction of multiple groups of magnetic plugs with the magnetic connection block, and uses the test chuck to clamp the varistor for testing. At the same time, multiple groups of cables are respectively wound on the winding wheels. When testing, the test chuck is pulled out from the internal connection of the control panel. When the testing is completed, the test chuck is released, and the torsion spring drives the winding wheel to rotate and wind up the cable, playing a role in storing multiple groups of cables and reducing the influence generated during winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is the three-dimensional view of the present invention;

[0023] Figure 2 is the structural schematic diagram of the fixing block in the present invention;

[0024] Figure 3 is the structural schematic diagram of the fan in the present invention;

[0025] Figure 4 is the structural schematic diagram of the waterproof cover plate in the present invention;

[0026] Figure 5 is the partial cross-sectional view of the tester body in the present invention;

[0027] Figure 6 is the structural schematic diagram of the holding handle in the present invention;

[0028] Figure 7 is the structural schematic diagram of the controller in the present invention;

[0029] Figure 8 is the structural schematic diagram of the sealing cover plate in the present invention.

[0030] In the figure: 1. tester body; 11. controller; 12. rotating shaft; 13. sealing cover plate; 14. waterproof strip; 15. diversion groove; 2. fixing block; 21. limiting insertion plate; 22. first bolt; 23. clamping plate; 3. fixing frame; 31. motor; 32. fan; 33. air guide hole; 4. waterproof cover plate; 41. ventilation hole; 42. rotating handle; 43. blocking plate; 5. supporting arc rod; 51. first elastic member; 6. rubber column; 61. second elastic member; 62. sliding plate; 63. sponge pad; 64. gravity sensor; 7. limiting hole; 71. matching sliding plate; 72. second bolt; 8. sliding insertion block; 81. convex block; 9. holding handle; 91. rubber finger sleeve; 92. magnetic connection block; 93. magnetic plug; 94. cable; 95. test chuck; 96. fixing rod; 97. winding wheel; 98. sealing cover plate; 99. insertion rod. Detailed implementation mode

[0031] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0032] Embodiment 1

[0033] As Figure 1 and Figure 5As shown in the figure, a varistor testing device according to an embodiment of the present invention includes a tester body 1; a controller 11 is slidably connected to the inner side wall of the tester body 1; a rotating shaft 12 is rotatably connected to the inner side wall of the tester body 1; a sealing cover plate 13 is fixedly connected to the outside of the rotating shaft 12; a waterproof strip 14 is fixedly connected to the inner side wall of the sealing cover plate 13; a diversion groove 15 is opened at the top end of the tester body 1; a limiting component is arranged outside the tester body 1, and the limiting component is used to fix the sealing cover plate 13; when replacing a damaged varistor outdoors, it is necessary to perform lightning protection tests on the damaged varistor and the new varistor. Since extreme rainfall or even snowfall and other weather conditions are often encountered outdoors, the current protection performance of varistor testing instruments is poor, and rainwater is likely to seep into the interior of the varistor testing instrument, thereby damaging the internal parts of the instrument and affecting the normal use of the varistor testing instrument. Therefore, the square waterproof strip 14 is fixed on the sealing cover plate 13, and the controller 11 slides on the inner wall of the tester body 1 and is connected by wires for testing and controlling use. When carrying, the sealing cover plate 13 is rotated. The sealing cover plate 13 rotates with the rotating shaft 12 on the inner side wall of the tester body 1, presses on the top end of the tester body 1, and cooperates with the limiting component to fix the sealing cover plate 13, so that the waterproof strip 14 is tightly pressed on the top end of the tester body 1. When encountering rainfall or snowfall weather, some rain and snow seep in from the gap between the tester body 1 and the sealing cover plate 13, and a large amount of moisture will be drained from the diversion groove 15, and some moisture will be blocked by the waterproof strip 14, achieving the effect of preventing water from seeping in, reducing the impact of rain and snow on the internal parts, and facilitating carrying the tester body 1 for outdoor varistor testing use.

[0034] As Figures 1 to 2 shown, the limiting component includes a fixed block 2, a limiting plug 21, a first bolt 22 and a clamping plate 23; the fixed block 2 is fixedly connected to the outside of the tester body 1; the limiting plug 21 is slidably connected to the inner side wall of the fixed block 2; the first bolt 22 is threadedly connected to the inner side wall of the fixed block 2 and penetrates through the limiting plug 21; the clamping plate 23 is fixedly connected to the outside of the sealing cover plate 13; when carrying the tester body 1 for outdoor varistor testing, the sealing cover plate 13 is rotated and covered on the top end of the tester body 1, and the clamping plate 23 slides into the inner groove of the fixed block 2 accordingly. The operator inserts the limiting plug 21 into the inner side wall of the fixed block 2 and slides it, and cooperates with the first bolt 22 to threadedly penetrate through the limiting plug 21 and fix it inside the fixed block 2, achieving the effect of limiting the clamping plate 23 and sealing the top end of the tester body 1 to reduce the infiltration of moisture.

[0035] As Figures 1 to 4As shown, a circular hole is provided on the inner side wall of the sealing cover plate 13; a fixing frame 3 is fixedly connected to the inner side wall of the sealing cover plate 13 and is located within the circular hole; a motor 31 is fixedly connected to the outside of the fixing frame 3; an output end of the motor 31 is fixedly connected to a fan 32; a plurality of air guide holes 33 are provided on the outside of the sealing cover plate 13, and the air guide holes 33 are inclined downward. After rainy or snowy weather, some rainwater remains in the gap between the tester body 1 and the sealing cover plate 13. When it is necessary to open the tester body 1 for testing, after removing the limit insertion plate 21, the sealing cover plate 13 is rotated. The output end of the motor 31 on the fixing frame 3 rotates, driving the fan 32 to draw air into the cavity of the sealing cover plate 13 and blow out from the plurality of air guide holes 33. By means of the downward diversion of the air guide holes 33, the wind is blown onto the controller 11 and the outside, playing a role in drying the periphery of the controller 11, reducing the residual moisture, and further reducing the infiltration of rainwater. At the same time, when the tester body 1 is used for a long time, a large number of components in the controller 11 generate heat energy. By using the fan 32 to draw air and blow it out from the air guide holes 33, the effect of dissipating heat at the top of the tester body 1 can be achieved.

[0036] A waterproof cover plate 4 is fixedly connected to the outside of the sealing cover plate 13 and is located at the circular hole; four ventilation holes 41 are provided on the outside of the waterproof cover plate 4; a rotating handle 42 is rotatably connected to the inner side wall of the waterproof cover plate 4; four blocking plates 43 are fixedly connected to the outside of the rotating handle 42. When encountering bad weather such as strong winds, rain, snow, etc. during testing, since a circular hole is provided at the position of the fan 32, some impurities, rain, and snow blown by the wind will enter from the circular hole. Therefore, by using the waterproof cover plate 4 to be fixed at the external circular hole of the sealing cover plate 13, an effect of shielding is achieved. Hold the outside of the rotating handle 42 and rotate it, driving the four blocking plates 43 to rotate. If the four blocking plates 43 block the four ventilation holes 41, the effect of blocking the circular hole of the sealing cover plate 13 can be realized. If the ventilation holes 41 are not blocked, it can cooperate with the rotation of the fan 32 to play the role of air extraction and ventilation.

[0037] As Figures 1 to 6 As shown, a plurality of support arc rods 5 are slidably connected to the inner side wall of the tester body 1, and one end of the support arc rod 5 is fixedly connected to the outside of the sealing cover plate 13; a first elastic member 51 is fixedly connected to the bottom end of the support arc rod 5. When the rotating shaft 12 rotates to drive the sealing cover plate 13 to open, in order to limit the sealing cover plate 13 to prevent the sealing cover plate 13 from rotating again and injuring the controller 11 during the test of the controller 11, thereby affecting the outdoor varistor test, a plurality of first elastic members 51 are used to support the plurality of support arc rods 5, and the support arc rods 5 are used to support and limit the sealing cover plate 13, playing an effect of auxiliary support for the sealing cover plate 13.

[0038] A rubber column 6 is fixedly connected to the inner side wall of the tester body 1; a second elastic member 61 is sleeved outside the rubber column 6; the top end of the rubber column 6 is fixedly connected with a sliding plate 62, and the sliding plate 62 is slidably connected to the inner side wall of the tester body 1; a sponge pad 63 is fixedly connected to the top end of the sliding plate 62; a gravity sensor 64 is installed inside the tester body 1, and the gravity sensor 64 is signal-connected to the motor 31; a limiting hole 7 is formed inside the tester body 1; a matching sliding plate 71 is fixedly connected to the outside of the sliding plate 62; a second bolt 72 is threadedly connected to the inner side wall of the tester body 1 and penetrates through the matching sliding plate 71; when the controller 11 is placed for storage inside the tester body 1, since the controller 11 needs to be taken out during use, but it is difficult to take out when the controller 11 is flush with the tester body 1, so the rubber column 6 is used to be fixedly supported inside the tester body 1, and the second elastic member 61 is used to push up the sliding plate 62. The controller 11 is placed on the sponge pad 63. When the sealing cover plate 13 is opened, the rubber column 6 and the second elastic member 61 reset elastically, driving the controller 11 on the sliding plate 62 to slide up, facilitating the taking out and use of the controller 11. At the same time, when the sliding plate 62 slides up, it moves away from the gravity sensor 64. After the gravity sensor 64 loses gravity, it transmits a signal to the motor 31, causing the motor 31 to work and driving the fan 32 to draw air into the sealing cover plate 13, achieving the effect of induction air drying and heat dissipation. When the controller 11 is placed on the sliding plate 62, due to the elastic force of the rubber column 6 and the second elastic member 61, after the sealing cover plate 13 is opened, the controller 11 is easily pushed up quickly, resulting in friction damage between the controller 11 and the sealing cover plate 13. Therefore, the matching sliding plate 71 is fixedly connected to the outside of the sliding plate 62 and slides on the inner side wall of the tester body 1. When the controller 11 is stored, the second bolt 72 is passed through the matching sliding plate 71 and threadedly connected into the limiting hole 7 to limit the sliding plate 62 and protect the controller 11. When using the controller 11, the second bolt 72 can be threadedly disassembled.

[0039] A plurality of limiting grooves are formed on the outer side of the controller 11; a sliding plug 8 is slidably connected to the inner side wall of the tester body 1; a convex block 81 is fixedly connected to the top end of the sliding plug 8; a holding handle 9 is fixedly connected to the outer side of the tester body 1; a plurality of rubber finger sleeves 91 are fixedly connected to the outer side of the holding handle 9; when the controller 11 slides inside the tester body 1, in order to prevent the controller 11 from being directly ejected by the rubber column 6 and the second elastic member 61, the sliding plug 8 is used to insert into the limiting groove outside the controller 11 for limiting. When it is used after the sealing cover plate 13 is rotated and opened, the convex block 81 can be toggled to drive the sliding plug 8 to slide into the limiting groove below the controller 11 for limiting, so as to prevent the controller 11 from being directly ejected by the elastic force when the sealing cover plate 13 is opened, and even cause friction damage to the outside of the sealing cover plate 13. When performing a varistor test outdoors, due to the influence of bad weather, it is not convenient to hold the tester body 1 and walk, which increases the safety hazard and is likely to affect the line of sight and cause a fall. Therefore, the holding handle 9 is fixed to the outside of the tester body 1, which is convenient for the operator to hold, and is combined with a plurality of rubber finger sleeves 91 fixed to the outside of the holding handle 9. The operator can insert the fingers into the plurality of rubber finger sleeves 91 one by one to play an auxiliary holding effect, so as to prevent falling when walking outdoors in rainy and snowy weather, thereby causing damage to the tester body 1.

[0040] As Figures 1 to 7 As shown in the figure, a storage groove is formed on the side wall of the controller 11, and three magnetic connection blocks 92 are installed on the inner side wall of the controller 11 and are located in the storage groove; a magnetic plug 93 is inserted into the magnetic connection block 92; the magnetic connection block 92 and the magnetic plug 93 can attract each other with opposite polarities when approaching each other; a cable 94 is fixedly connected to the outer side of the magnetic plug 93; a test clip 95 is fixedly connected to the end of the cable 94; when replacing a damaged varistor, it is necessary to connect the controller 11 to the damaged varistor and the new varistor respectively for testing. The three magnetic connection blocks 92 are respectively installed on the inner side wall of the controller 11, and the magnetic plug 93 is inserted into the three magnetic connection blocks 92 respectively by relying on the magnetic attraction with the magnetic connection block 92 to improve the stability of the insertion of the magnetic plug 93, and is connected to the test clip 95 through the cable 94. The test clip 95 is pulled out of the inside of the controller 11 and clamped on the varistor, which is convenient for clamping and testing the varistor. At the same time, by using the formed storage groove, it can play a waterproof effect on the plurality of magnetic connection blocks 92 in the storage groove and is also convenient for storing them inside the controller 11.

[0041] A fixed rod 96 is fixedly connected to the inner side wall of the controller 11; three winding wheels 97 are rotatably connected to the inner side wall of the fixed rod 96 through three torsion springs, and the three cables 94 are respectively wound around the three winding wheels 97; when multiple magnetic plugs 93 are plugged on the inner side wall of the controller 11, since the multiple cables 94 are easily entangled and not easy to sort out, the testing efficiency is reduced during testing, and even problems occur in the test data. Therefore, the fixed rod 96 is fixed on the inner side wall of the control panel 11, and the three winding wheels 97 are respectively rotatably connected to the inner wall of the fixed rod 96. The multiple cables 94 are respectively wound around the multiple winding wheels 97 in sequence. When the pulling test chuck 95 is clamped on the varistor, the winding wheel 97 rotates on the fixed rod 96 accordingly, and the torsion spring is stressed. When the test is completed, the torsion spring rotates in place, driving the winding wheel 97 to wind up the cable 94, playing a role in facilitating storage and reducing the entanglement of the multiple cables 94, thereby affecting the test data.

[0042] Embodiment 2

[0043] As Figure 8 shown, compared with Embodiment 1, another implementation manner of the present invention is as follows: two jacks are provided on the inner side wall of the controller 11; a sealing cover plate 98 is arranged at the top end of the test chuck 95; two insertion rods 99 are fixedly connected to the bottom end of the sealing cover plate 98, and the insertion rods 99 correspond to the jacks; when multiple test chucks 95 are placed on the inner wall of the control panel 11, in order to reduce the accidental penetration of rainwater into the test chucks 95, resulting in a short circuit during testing, the sealing cover plate 98 is covered and installed at the top end of the test chuck 95, and the two insertion rods 99 are inserted into the corresponding two jacks, playing a role in shielding the multiple test chucks 95 and reducing the occurrence of a short circuit due to water at the test site.

[0044] Working principle: When replacing a damaged varistor outdoors, lightning protection tests need to be performed on the damaged varistor and the new varistor. Since extreme rainfall or even snowfall may be encountered outdoors for a long time, the current protection performance of varistor testing instruments is poor, and rainwater is likely to seep into the interior of the varistor testing instrument, thereby damaging the internal components of the instrument and affecting the normal use of the varistor testing instrument. Therefore, a square waterproof strip 14 is fixed on the sealing cover plate 13. The controller 11 slides on the inner wall of the tester body 1 and is connected by wires for testing and operation. When carrying, rotate the sealing cover plate 13. The sealing cover plate 13 rotates along the rotating shaft 12 on the inner side wall of the tester body 1, presses on the top of the tester body 1, and is fixed with the sealing cover plate 13 by cooperating with the limiting component, so that the waterproof strip 14 is tightly pressed on the top of the tester body 1. When encountering rainfall or snowfall weather, some rain and snow seep in from the gap between the tester body 1 and the sealing cover plate 13, and a large amount of water will be drained from the diversion groove 15. Some water will be blocked by the waterproof strip 14, achieving the effect of preventing water from seeping in, reducing the impact of rain and snow on the internal components, and facilitating the use of the tester body 1 for outdoor varistor testing; when carrying the tester body 1 for outdoor varistor testing, rotate the sealing cover plate 13 to cover the top of the tester body 1, and the clamping plate 23 will slide into the inner groove of the fixed block 2 accordingly. The operator inserts the limit insertion plate 21 into the inner side wall of the fixed block 2 and slides it, and cooperates with the first bolt 22 to thread through the limit insertion plate 21 and fix it inside the fixed block 2, achieving the effect of limiting the clamping plate 23 and sealing the top of the tester body 1 to reduce the infiltration of water; after the rain and snow weather, some rainwater remains in the gap between the tester body 1 and the sealing cover plate 13. When it is necessary to open the tester body 1 for testing, remove the limit insertion plate 21 and then rotate the sealing cover plate 13. The output end of the motor 31 on the fixing frame 3 rotates, driving the fan 32 to draw air into the cavity of the sealing cover plate 13 and blow out from multiple air guide holes 33. Using the downward diversion of the air guide holes 33, the wind blows onto the controller 11 and the outside, playing a role in drying the surroundings of the controller 11, reducing the residual moisture, and further reducing the infiltration of rainwater. At the same time, when the tester body 1 is used for a long time, a large number of components in the controller 11 generate heat energy. By using the fan 32 to draw air and blow it out from the air guide holes 33, the effect of dissipating heat from the top of the tester body 1 can be achieved; when encountering bad weather such as strong wind, rain and snow during testing, since a circular hole is provided at the position of the fan 32, some impurities and rain and snow blown by the strong wind will enter from the circular hole. Therefore, a waterproof cover plate 4 is fixed at the external circular hole of the sealing cover plate 13 to play a shielding role. Hold the outside of the rotating handle 42 and rotate it, driving the four blocking plates 43 to rotate. If the four blocking plates 43 block the four ventilation holes 41, the effect of blocking the circular hole of the sealing cover plate 13 can be achieved. If the ventilation holes 41 are not blocked, it can cooperate with the rotation of the fan 32 to play the role of air extraction and ventilation;When the rotating shaft 12 rotates to drive the sealing cover plate 13 to open, in order to limit the position of the sealing cover plate 13 to prevent the sealing cover plate 13 from rotating again and hitting the controller 11 during the test of the controller 11, which may affect the outdoor varistor test, multiple groups of first elastic members 51 are used to support multiple groups of supporting arc rods 5, and the supporting arc rods 5 are used to support and limit the sealing cover plate 13, achieving the effect of auxiliary support for the sealing cover plate 13; when the controller 11 is stored inside the tester body 1, since the controller 11 needs to be taken out during use, but it is difficult to take out when the controller 11 is flush with the tester body 1, so the rubber column 6 is fixed to support inside the tester body 1, and the sliding plate 62 is pushed up by the second elastic member 61. The controller 11 is placed on the sponge pad 63. When the sealing cover plate 13 is opened, the rubber column 6 and the second elastic member 61 reset elastically, driving the controller 11 on the sliding plate 62 to slide upward, facilitating the taking out and use of the controller 11. At the same time, when the sliding plate 62 slides upward, it moves away from the gravity sensor 64. After the gravity sensor 64 loses gravity, it transmits a signal to the motor 31, causing the motor 31 to operate and driving the fan 32 to draw air into the inside of the sealing cover plate 13, achieving the effect of inductive air drying and heat dissipation. When the controller 11 is placed on the sliding plate 62, due to the elastic force of the rubber column 6 and the second elastic member 61, after the sealing cover plate 13 is opened, the controller 11 is easily pushed up quickly, resulting in friction damage between the controller 11 and the sealing cover plate 13. Therefore, the cooperation slide plate 71 is fixed to the outside of the sliding plate 62 and slides on the inner side wall of the tester body 1. When the controller 11 is stored, the second bolt 72 passes through the cooperation slide plate 71 and is threadedly connected to the limit hole 7, achieving the effect of limiting the sliding plate 62 and protecting the controller 11. When using the controller 11, the second bolt 72 can be threadedly disassembled; when the controller 11 slides inside the tester body 1, in order to prevent the controller 11 from being directly ejected by the elastic rebound of the rubber column 6 and the second elastic member 61, the sliding insert block 8 is inserted into the limit slot outside the controller 11 for limiting. When the sealing cover plate 13 is rotated and opened for use, the convex block 81 can be toggled to drive the sliding insert block 8 to slide into the limit slot below the controller 11 for limiting, preventing the controller 11 from being directly ejected by the elastic force when the sealing cover plate 13 is opened, and even causing friction damage to the outside of the sealing cover plate 13. When performing outdoor varistor tests, due to the influence of bad weather, it is not convenient to hold the tester body 1 and walk, increasing the safety hazard and easily affecting the line of sight and causing falls. Therefore, the holding handle 9 is fixed to the outside of the tester body 1 to facilitate the operator to hold, and multiple groups of rubber finger sleeves 91 are fixed to the outside of the holding handle 9. The operator can insert fingers into multiple groups of rubber finger sleeves 91 one by one, achieving the effect of auxiliary holding to prevent falls during outdoor walking in rainy or snowy weather, which may cause damage to the tester body 1;When replacing a damaged varistor, the controller 11 needs to be connected and tested with the damaged varistor and the new varistor respectively. Three groups of magnetic connection blocks 92 are respectively installed on the inner side wall of the controller 11. Relying on the magnetic attraction with the magnetic connection blocks 92, the magnetic plugs 93 are respectively inserted into the three groups of magnetic connection blocks 92, improving the stability of the insertion of the magnetic plugs 93. And they are connected to the test clip 95 through the cable 94. The test clip 95 is pulled out of the inside of the controller 11 and clamped on the varistor, facilitating the clamping and testing of the varistor. At the same time, by using the opened storage groove, it can play a waterproof effect on the multiple groups of magnetic connection blocks 92 in the storage groove and is also convenient for being put into the inside of the controller 11. When multiple groups of magnetic plugs 93 are inserted on the inner side wall of the controller 11, since multiple groups of cables 94 are easy to be entangled and not easy to be sorted out, the test efficiency is reduced during the test, and even problems may occur in the test data. Therefore, the fixing rod 96 is fixed on the inner side wall of the control panel 11, and three groups of winding wheels 97 are respectively rotatably connected to the inner wall of the fixing rod 96. Multiple groups of cables 94 are respectively wound around the multiple groups of winding wheels 97 in sequence. When the test clip 95 is pulled to clamp on the varistor, the winding wheel 97 rotates on the fixing rod 96 accordingly, and the torsion spring is stressed. After the test is completed, the torsion spring resets and rotates, driving the winding wheel 97 to wind up the cable 94, playing a role in facilitating the storage and reducing the entanglement of multiple groups of cables 94, thus affecting the test data. When multiple groups of test clips 95 are placed on the inner wall of the control panel 11, in order to reduce the accidental infiltration of rainwater into the test clips 95, resulting in a short circuit during the test, the sealing cover plate 98 is covered and installed on the top of the test clip 95, and two groups of insertion rods 99 are inserted into the corresponding two groups of jacks, playing a role in shielding multiple groups of test clips 95 and reducing the occurrence of a short circuit due to water at the test site.;

[0045] The above front, back, left, right, up, and down are all based on the Figure 1 description in the attached drawings of the specification. Taking the perspective of the observer as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection scope of the present invention.

[0047] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A varistor testing device, characterized in that: It includes a tester body (1); a controller (11) is slidably connected to the inner side wall of the tester body (1); a rotating shaft (12) is rotatably connected to the inner side wall of the tester body (1); a sealing cover plate (13) is fixedly connected to the outside of the rotating shaft (12); a waterproof strip (14) is fixedly connected to the inner side wall of the sealing cover plate (13); a diversion groove (15) is opened at the top end of the tester body (1); a limiting component is arranged outside the tester body (1), and the limiting component is used to fix the sealing cover plate (13). The limiting component includes a fixed block (2), a limiting insertion plate (21), a first bolt (22) and a clamping plate (23); the fixed block (2) is fixedly connected to the outside of the tester body (1); the limiting insertion plate (21) is slidably connected to the inner side wall of the fixed block (2); the first bolt (22) is threadedly connected to the inner side wall of the fixed block (2) and penetrates through the limiting insertion plate (21); the clamping plate (23) is fixedly connected to the outside of the sealing cover plate (13). A round hole is opened in the inner side wall of the sealing cover plate (13); a fixing frame (3) is fixedly connected to the inner side wall of the sealing cover plate (13) and is located within the round hole; a motor (31) is fixedly connected to the outside of the fixing frame (3); an output end of the motor (31) is fixedly connected to a fan (32); a plurality of air guide holes (33) are opened on the outside of the sealing cover plate (13), and the air guide holes (33) are inclined downwardly. A rubber column (6) is fixedly connected to the inner side wall of the tester body (1); a second elastic member (61) is sleeved on the outside of the rubber column (6); a sliding plate (62) is fixedly connected to the top end of the rubber column (6), and the sliding plate (62) is slidably connected to the inner side wall of the tester body (1); a sponge pad (63) is fixedly connected to the top end of the sliding plate (62); a gravity sensor (64) is installed inside the tester body (1), and the gravity sensor (64) is in signal connection with the motor (31). When the sliding plate (62) slides upward and is away from the gravity sensor (64), after the gravity sensor (64) loses gravity, it transmits a signal to the motor (31), causing the motor (31) to drive the fan (32) to draw air; a limiting hole (7) is opened inside the tester body (1); a matching sliding plate (71) is fixedly connected to the outside of the sliding plate (62); a second bolt (72) is threadedly connected to the inner side wall of the tester body (1) and penetrates through the matching sliding plate (71).

2. The varistor testing device according to claim 1, characterized in that: A waterproof cover plate (4) is fixedly connected to the outside of the sealing cover plate (13) and is located at the round hole; four air permeable holes (41) are opened on the outside of the waterproof cover plate (4); a rotating handle (42) is rotatably connected to the inner side wall of the waterproof cover plate (4); four blocking plates (43) are fixedly connected to the outside of the rotating handle (42).

3. A varistor testing device according to claim 1, characterized in that: A plurality of supporting arc rods (5) are slidably connected to the inner side wall of the tester body (1), and one end of each supporting arc rod (5) is fixedly connected to the outside of the sealing cover plate (13); a first elastic member (51) is fixedly connected to the bottom end of each supporting arc rod (5).

4. A varistor testing device according to claim 1, characterized in that: A plurality of limiting grooves are formed on the outer side of the controller (11); a sliding plug (8) is slidably connected to the inner side wall of the tester body (1); a convex block (81) is fixedly connected to the top end of the sliding plug (8); a holding handle (9) is fixedly connected to the outer side of the tester body (1); and a plurality of rubber finger sleeves (91) are fixedly connected to the outer side of the holding handle (9).

5. The varistor testing device according to claim 1, characterized in that: A storage groove is formed in the side wall of the controller (11), and three magnetic connection blocks (92) are installed on the inner side wall of the controller (11) and are located in the storage groove; a magnetic plug (93) is inserted into the magnetic connection block (92); the magnetic connection block (92) and the magnetic plug (93) can attract each other with opposite polarities when approaching each other; a cable (94) is fixedly connected to the outer side of the magnetic plug (93); and a test chuck (95) is fixedly connected to the end of the cable (94).

6. The varistor testing device according to claim 5, wherein: A fixing rod (96) is fixedly connected to the inner side wall of the controller (11); three winding wheels (97) are rotatably connected to the inner side wall of the fixing rod (96) through three torsion springs, and the three cables (94) are respectively wound around the three winding wheels (97).

7. The varistor testing device according to claim 5, characterized in that: Two jacks are formed in the inner side wall of the controller (11); a sealing cover plate (98) is arranged at the top end of the test chuck (95); and two insertion rods (99) are fixedly connected to the bottom end of the sealing cover plate (98), and the insertion rods (99) correspond to the jacks.

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