A surge current testing device for surge suppressors

Abstract

This invention discloses an impulse current testing device for a surge suppressor, relating to the technical field of surge suppressor testing equipment. It includes a housing, a fixed base, and a fixing assembly. The housing is hollow inside. The outer wall of the fixed base is fixedly connected to the housing, and the fixed base has a first receiving groove and a second receiving groove. The fixing assembly is symmetrically arranged on both sides of the first receiving groove. The fixing assembly includes a housing, a fixing plate, a first rotating shaft, a first square tube, a first square rod, and a screwdriver head. The outer wall of the housing is slidably connected to the inner wall of the second receiving groove, and the inner wall of the housing is fixedly connected to the fixing plate. By controlling the rotation of the first rotating shaft, the first square tube, the first square rod, and the screwdriver head are driven to rotate, tightening the screws on the terminals of the surge suppressor. This automatically connects the power cord to the surge suppressor body and the current transformer, eliminating the need for manual wiring of the surge suppressor. This method is convenient, safer, and improves experimental efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of surge suppressor testing equipment, and in particular to a surge suppressor impulse current testing device. Background Technology

[0002] A surge, also known as a transient electromagnetic pulse, is, as the name suggests, an instantaneous electromagnetic pulse exceeding stable values ​​that occurs on electrical equipment and power lines. It includes surge voltage and surge current. Essentially, although a surge is a violent electromagnetic pulse occurring for only a few millionths of a second, it is often this very momentous pulse that causes irreparable and enormous damage to electrical equipment and transmission lines. Many factors can cause surges, including the starting of heavy equipment or large engines, short circuits, and power switching. Therefore, it is essential to add surge-damping devices to power lines to effectively absorb sudden surges of energy and protect connected equipment from damage.

[0003] Currently, Chinese utility model application number 202122680552.X discloses a surge suppressor thermal stability impulse current test device. Although the surge suppressor can be fixed by setting a clamping structure, eliminating the need for staff to hold the clamping structure to fix it, thus reducing the risk and improving the safety index, the surge suppressor needs to be connected to the test circuit and the surge voltage and surge current need to be applied when conducting surge tests. The existing impulse current test device can only clamp and fix the surge suppressor, requiring manual wiring of the surge suppressor, which is cumbersome and unsafe. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing impulse current test device can only clamp and fix the surge suppressor, which requires manual wiring of the surge suppressor, which is cumbersome and unsafe.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a surge suppressor impulse current testing device, comprising a first receiving shell, a fixed base, and a fixing assembly, wherein the first receiving shell is hollow inside; the outer wall of the fixed base is fixedly connected to the first receiving shell, and the fixed base is provided with a first receiving groove and a second receiving groove; the fixing assembly is symmetrically arranged on both sides of the first receiving groove, and the fixing assembly includes a shell, a fixing plate, a first rotating shaft, a first square tube, a first square rod, and a screwdriver head; the outer wall of the shell is slidably connected to the inner wall of the second receiving groove, the inner wall of the shell is fixedly connected to the fixing plate, the fixing plate is rotatably connected to the outer wall of the first rotating shaft, the first rotating shaft is fixedly connected to one end of the square tube, the other end of the square tube is slidably connected to one end of the first square rod, and the other end of the first square rod is fixedly connected to the screwdriver head.

[0006] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, wherein: one or more screwdriver heads are provided, the first rotating shaft, the first square tube and the first square rod are provided corresponding to the screwdriver heads, the flywheel is fixedly connected to the first rotating shaft, and the flywheel is engaged with the transmission chain.

[0007] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, wherein: a worm gear is fixedly connected to the first rotating shaft, the worm gear meshes with a worm, the worm is fixedly connected to one end of a second square rod, the other end of the second square rod is fixedly connected to the inner wall of one end of a second square tube, the other end of the second square tube is fixedly connected to a first bevel gear, the outer wall of the second square tube is fixedly connected to the inner wall of a sleeve, the outer wall of the sleeve is rotatably connected to one side of a first fixing block, and the other side of the first fixing block is fixedly connected to the inner wall of a second receiving groove.

[0008] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, the first rotating shaft is hollow inside, one end of the first spring is fixedly connected to the inner end wall of the first rotating shaft, and the other end of the first spring is fixedly connected to the first square rod.

[0009] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, it further includes a transmission assembly, which includes a second receiving shell, an internally threaded pipe, a lead screw, and a second bevel gear. The outer wall of the second receiving shell is fixedly connected to the shell, the second receiving shell is fixedly connected to the internally threaded pipe, the internally threaded pipe is threadedly connected to the lead screw, and one end of the lead screw is fixedly connected to the second bevel gear.

[0010] In a preferred embodiment of the surge suppressor impulse current test device of the present invention, the second receiving shell is fixedly connected to a partition plate, which divides the interior of the second receiving shell into a first chamber and a second chamber. A piston head is slidably connected to the inner wall of the first chamber, and the piston head is rotatably connected to the other end of a lead screw. The second receiving shell is fixedly connected to a fixed cylinder, and the fixed cylinder is connected to a first rotating shaft through a connecting pipe.

[0011] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, wherein: the partition plate is provided with a control component, the control component includes a first cylinder, a second cylinder, a second spring, a third cylinder, a fourth cylinder and a third spring, the first cylinder is fixedly connected to the partition plate on its outer wall, the first cylinder is fixedly connected to one end of the second spring, the other end of the second spring is fixedly connected to the second cylinder, the second cylinder is fixedly connected to the third cylinder, the third cylinder is fixedly connected to one end of the third spring, and the other end of the third spring is fixedly connected to the fourth cylinder.

[0012] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, it further includes a drive assembly, which includes a rotating tube, a third rod, a third bevel gear and a fourth bevel gear. The third rod is slidably connected to the inner wall of one end of the rotating tube, and the third bevel gear and the fourth bevel gear are fixedly connected to the outer wall of the rotating tube. The third bevel gear is set to correspond to the first bevel gear, and the fourth bevel gear is set to correspond to the second bevel gear.

[0013] As a preferred embodiment of the surge suppressor impulse current testing device of the present invention, the driving assembly further includes a forward and reverse motor, a first gear, a second gear, a second rotating shaft, a fifth bevel gear, a sixth bevel gear, and a third rotating shaft. The forward and reverse motor is installed on the inner wall of the second receiving groove. The forward and reverse motor is fixedly connected to the first gear. The first gear meshes with the second gear. The second gear is fixedly connected to the second rotating shaft. The second rotating shaft is rotatably connected to a second fixing block. The second fixing block is fixedly connected to the inner wall of the second receiving groove. The second rotating shaft is fixedly connected to the fifth bevel gear at both ends. The fifth bevel gear meshes with the sixth bevel gear. The sixth bevel gear is fixedly connected to one end of the third rotating shaft. The other end of the third rotating shaft is fixedly connected to a third rod. The third rotating shaft is rotatably connected to the third fixing block. The third fixing block is fixedly connected to the inner wall of the second receiving groove.

[0014] As a preferred embodiment of the surge suppressor impulse current test device of the present invention, wherein: the end of the rotating tube away from the third rod is fixedly connected to the sleeve, the sleeve is fixedly connected to one end of the electric push rod, and the other end of the electric push rod is fixedly connected to the inner wall of the second receiving groove.

[0015] The beneficial effects of this invention are as follows: After the surge suppressor is placed in the first receiving groove, the wire is brought into contact with the terminal of the surge suppressor. The housing is then slid into the first receiving groove. After the screwdriver head moves above the terminal of the surge suppressor, the first square rod extends downward from the first square tube. The first square rod drives the screwdriver head to move, and the screwdriver head contacts the screw on the terminal of the surge suppressor. The first rotating shaft is then controlled to rotate, driving the first square tube, the first square rod, and the screwdriver head to rotate, tightening the screw on the terminal of the surge suppressor. This automatically connects the wire to the protector body and the current transformer, eliminating the need for manual wiring of the surge suppressor. This method is convenient, safer, and improves experimental efficiency. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the housing and fixing base in an embodiment of this disclosure.

[0017] Figure 2 This is a vertical sectional view of the fixing seat in an embodiment of this disclosure.

[0018] Figure 3 This is a horizontal sectional view of the fixed base in an embodiment of this disclosure.

[0019] Figure 4 This is a schematic diagram of the fixed component and driving component structure in the embodiments of this disclosure.

[0020] Figure 5 This is a bottom view of the housing in an embodiment of this disclosure.

[0021] Figure 6 This is a schematic diagram of the fixed component structure in an embodiment of this disclosure.

[0022] Figure 7 This is a schematic diagram of the driving component structure in an embodiment of this disclosure.

[0023] Figure 8 In the embodiments of this disclosure Figure 7 Enlarged diagram of point A in the middle.

[0024] Figure 9 This is a cross-sectional view of the first rotation axis in an embodiment of this disclosure.

[0025] Figure 10 This is an enlarged schematic diagram of point B in embodiment 7 of this disclosure.

[0026] Figure 11 This is a cross-sectional view of the receiving shell in an embodiment of this disclosure.

[0027] Figure 12 This is an enlarged schematic diagram of point C in embodiment 11 of this disclosure.

[0028] Figure 13 This is a cross-sectional view of the housing shell when the internal pressure of the first chamber in this embodiment increases.

[0029] Figure 14 This is a cross-sectional view of the housing shell when the internal pressure of the first chamber in this embodiment decreases.

[0030] Figure 15 This is a schematic diagram of the structure of an existing impulse current testing device in an embodiment of this disclosure.

[0031] Reference numerals: First receiving shell 1, fixing base 2, first receiving groove 21, second receiving groove 22, fixing assembly 3, housing 31, fixing plate 32, first rotating shaft 33, first spring 331, first square tube 34, first square rod 35, screwdriver head 36, flywheel 37, transmission chain 38, worm gear 39, worm 310, second square rod 311, second square tube 312, first bevel gear 313, sleeve 314, transmission assembly 4, second receiving shell 41, internally threaded tube 42, lead screw 43, second bevel gear 44, partition 45, first chamber 401, second chamber 402, piston Head 403, fixed cylinder 48, connecting pipe 47, fixed cylinder 48, control component 46, first cylinder 461, second cylinder 462, second spring 463, third cylinder 464, fourth cylinder 465, third spring 466, drive assembly 5, rotating pipe 51, third rod 52, third bevel gear 53, fourth bevel gear 54, forward and reverse motor 55, first gear 56, second gear 57, second rotating shaft 58, fifth bevel gear 59, sixth bevel gear 510, third rotating shaft 511, second fixed block 581, third fixed block 51111, sleeve 512, electric push rod 513. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] Reference Figures 1 to 6 This embodiment provides an impulse current testing device for a surge suppressor, including a first housing 1, a fixing base 2, and a fixing component 3. The first housing 1 is hollow inside; the interior of the first housing 1 is used to accommodate the impulse current testing device.

[0035] The outer wall of the fixing base 2 is fixedly connected to the first receiving shell 1. The fixing base 2 is provided with a first receiving groove 21 and a second receiving groove 22. The first receiving groove 21 is vertically opened on the fixing base 2. The interior of the first receiving groove 21 is used to accommodate the surge suppressor, and the bottom of the first receiving groove 21 protrudes (see reference). Figure 2 This can hold the surge suppressor in place. The second receiving groove 22 is horizontally opened on the fixing base 2, and the second receiving groove 22 is used to accommodate the fixing component 3.

[0036] The fixing components 3 are symmetrically arranged on both sides of the first receiving groove 21. The fixing components 3 include a housing 31, a fixing plate 32, a first rotating shaft 33, a first square tube 34, a first square rod 35, and a screwdriver head 36. The outer wall of the housing 31 is slidably connected to the inner wall of the second receiving groove 22. The fixing plate 32 is fixedly connected to the inner wall of the housing 31. The fixing plate 32 is rotatably connected to the outer wall of the first rotating shaft 33. The first rotating shaft 33 is fixedly connected to one end of the square tube 34. The other end of the square tube 34 is slidably connected to one end of the first square rod 35. The other end of the first square rod 35 is fixedly connected to the screwdriver head 36.

[0037] In this preferred embodiment, the housing 31, fixing plate 32, first rotating shaft 33, first square tube 34, first square rod 35, and screwdriver head 36 are symmetrically arranged on both sides of the first receiving groove 21. The housing 31 can slide horizontally on the inner wall of the second receiving groove 22. When the housing 31 moves, it can drive the fixing plate 32, first rotating shaft 33, first square tube 34, first square rod 35, and screwdriver head 36 to move. When the first rotating shaft 33 rotates, it can drive the first square tube 34, first square rod 35, and screwdriver head 36 to rotate, tightening the screws on the terminals of the surge suppressor.

[0038] Furthermore, one end of the wire is pre-connected to the terminal of the impulse current test device, and the other end of the wire is placed below the screwdriver head 36. After the surge suppressor is placed in the first receiving groove 21, the wire is brought into contact with the terminal of the surge suppressor. The control housing 31 slides into the first receiving groove 21. After the screwdriver head 36 moves above the terminal of the surge suppressor, the first square rod 35 extends downward from the first square tube 34. The first square rod 35 drives the screwdriver head 36 to move. The screwdriver head 36 contacts the screw on the terminal of the surge suppressor, and the control first rotating shaft 33 rotates, driving the first square tube 34, the first square rod 35 and the screwdriver head 36 to rotate, tightening the screw on the terminal of the surge suppressor. The wire automatically connects the protector body 8 and the current transformer 7 together, eliminating the need for manual wiring of the surge suppressor, making it convenient and safer to use.

[0039] Example 2

[0040] Reference Figures 1 to 15 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that...

[0041] Reference Figure 7 and Figure 8 The screwdriver head 36 is provided in one or more. The first rotating shaft 33, the first square tube 34 and the first square rod 35 are provided corresponding to the screwdriver head 36. The flywheel 37 is fixedly connected to the first rotating shaft 33, and the flywheel 37 is engaged with the transmission chain 38.

[0042] In this preferred embodiment, by providing one or more screwdriver heads 36, the screws on the terminals of the surge suppressor can be tightened simultaneously, eliminating the need for manual wiring of the surge suppressor and making it convenient to use. When one of the first rotating shafts 33 rotates, it can drive the flywheel 37 to rotate, which in turn drives the transmission chain 38 to rotate, thereby driving the other flywheels 37 and the first rotating shaft 33 to rotate.

[0043] Reference Figure 7 , Figure 8 and Figure 10 One of the first rotating shafts 33 is fixedly connected to a worm gear 39, which meshes with a worm 310. The worm 310 is fixedly connected to one end of a second square rod 311. The other end of the second square rod 311 is fixedly connected to the inner wall of one end of a second square tube 312. The other end of the second square tube 312 is fixedly connected to a first bevel gear 313. The outer wall of the second square tube 312 is fixedly connected to the inner wall of a sleeve 314. The outer wall of the sleeve 314 is rotatably connected to one side of a first fixing block 315. The other side of the first fixing block 315 is fixedly connected to the inner wall of a second receiving groove 22.

[0044] In this embodiment, preferably, the second square rod 311 can slide on the second square tube 312. When the second square tube 312 rotates, it can drive the sleeve 314 to rotate. The sleeve 314 can rotate on the first fixing block 315. The first fixing block 315 can support the second square tube 312. Preferably, two fixing rings are fixedly connected to the outer wall of the second square tube 312. The two fixing rings are located on both sides of the first fixing block 315 to prevent the second square tube 312 from moving axially.

[0045] Furthermore, when the first bevel gear 313 rotates, it drives the second square tube 312 to rotate. The second square tube 312 drives the second square rod 311 to rotate. The second square rod 311 drives the worm gear 310 to rotate. The worm gear 310 drives the worm wheel 39 to rotate. The worm wheel 39 drives the first rotating shaft 33 to rotate, which in turn drives the flywheel 37 to rotate. The flywheel 37 drives the transmission chain 38 to rotate, which in turn drives the remaining flywheels 37 and the first rotating shaft 33 to rotate. The rotation of the first rotating shaft 33 drives the first square tube 34, the first square rod 35, and the screwdriver head 36 to rotate, tightening the screws on the terminals of the surge suppressor. The protector body and the current transformer are automatically connected together by wires, eliminating the need for manual wiring of the surge suppressor. This makes it convenient and safer to use. Moreover, the worm wheel 39 cannot drive the worm gear 310 to rotate, preventing the screws on the terminals of the surge suppressor from loosening after tightening.

[0046] Reference Figure 9 The first rotating shaft 33 is hollow inside. One end of the first spring 331 is fixedly connected to the inner end wall of the first rotating shaft 33, and the other end of the first spring 331 is fixedly connected to the first square rod 35.

[0047] In this preferred embodiment, air pressure is pumped into the first rotating shaft 33, increasing the pressure inside the first rotating shaft 33. The pressure overcomes the tension of the first spring 331 and pushes the first square rod 35 downward. The first square rod 35 drives the screwdriver head 36 to move, and the screwdriver head 36 contacts the terminal of the surge suppressor.

[0048] Reference Figure 10 and Figure 11 It also includes a transmission assembly 4, which includes a second receiving shell 41, an internally threaded tube 42, a lead screw 43, and a second bevel gear 44. The outer wall of the second receiving shell 41 is fixedly connected to the shell 31, and the second receiving shell 41 is fixedly connected to the internally threaded tube 42. The internally threaded tube 42 is threadedly connected to the lead screw 43, and one end of the lead screw 43 is fixedly connected to the second bevel gear 44.

[0049] Preferably, in this embodiment, the second receiving shell 41 moves, driving the shell 31 to move as well. When the second bevel gear 44 rotates, it drives the lead screw 43 to rotate, and the internally threaded tube 42 moves along the length of the lead screw 43 under the action of the thread, thus driving the second receiving shell 41 to move. When the second bevel gear 44 and the lead screw 43 rotate in the forward direction, the internally threaded tube 42, the second receiving shell 41, and the shell 31 move towards the first receiving groove 21.

[0050] Reference Figure 10 The inner wall of the second receiving shell 41 is fixedly connected to a partition 45, which divides the interior of the second receiving shell 41 into a first chamber 401 and a second chamber 402. The inner wall of the first chamber 401 is slidably connected to a piston head 403, which is rotatably connected to the other end of a lead screw 43. The second receiving shell 41 is fixedly connected to a fixed cylinder 48, which is connected to a first rotating shaft 33 through a connecting pipe 47.

[0051] In this preferred embodiment, when the second bevel gear 44 rotates in the forward direction, it drives the lead screw 43 to rotate, and the internally threaded tube 42 moves along the lead screw 43 under the action of the thread. Figure 11 When the piston moves to the right, the gas in the first chamber 401 on the right side of the piston head 403 is compressed, the gas pressure increases, and the gas enters the second chamber 402. The gas in the second chamber 402 enters the first rotating shaft 33 through the fixed cylinder 48 and the connecting pipe 47. The pressure inside the first rotating shaft 33 increases, and the pressure overcomes the tension of the first spring 331 to push the first square rod 35 downward. The first square rod 35 drives the screwdriver head 36 to move, and the screwdriver head 36 contacts the terminal of the surge suppressor.

[0052] Reference Figures 10 to 13The partition 45 is provided with a control component 46, which includes a first cylinder 461, a second cylinder 462, a second spring 463, a third cylinder 464, a fourth cylinder 465, and a third spring 466. The first cylinder 461 is fixedly connected to the partition 45 on its outer wall. One end of the second spring 463 is fixedly connected to the first cylinder 461, and the other end of the second spring 463 is fixedly connected to the second cylinder 462. The second cylinder 462 is fixedly connected to the third cylinder 464, and one end of the third spring 466 is fixedly connected to the third cylinder 466. The other end of the third spring 466 is fixedly connected to the fourth cylinder 465.

[0053] In this preferred embodiment, when the second bevel gear 44 rotates in the forward direction, it drives the lead screw 43 to rotate, and the internally threaded tube 42 moves along the lead screw 43 under the action of the thread. Figure 11 The piston moves to the right, at which point the gas in the first chamber 401 on the right side of the piston head 403 is compressed, increasing the gas pressure. When the gas pressure exceeds the tension of the second spring 463, the second cylinder 462 moves towards the right. Figure 12 Move to the right in the middle, and reach Figure 13 The fourth tube (465) is in the middle position, while the third tube (464) is blocked and cannot pass through. Figure 11 The gas moves to the right, and at this time the gas in the first chamber 401 enters the second chamber 402. The gas in the second chamber 402 enters the first rotating shaft 33 through the fixed cylinder 48 and the connecting pipe 47. The gas pressure inside the first rotating shaft 33 increases, and the pressure overcomes the tension of the first spring 331 to push the first square rod 35 downward. The first square rod 35 drives the screwdriver head 36 to move, and the screwdriver head 36 contacts the screw on the terminal of the surge suppressor.

[0054] When the second bevel gear 44 rotates in the reverse direction, it drives the lead screw 43 to rotate. Under the action of the thread, the internally threaded tube 42 moves along the lead screw 43. Figure 11 When the piston moves to the left, the air pressure in the first chamber 401 on the right side of the piston head 403 decreases. When the air pressure is less than the tension of the second spring 463, the second cylinder 462 returns to its original position. Figure 12 The position in the middle, and the fourth tube 465 towards Figure 12 Move to the left in the middle, and reach Figure 14 At this position, the gas in the second chamber 402 enters the first chamber 401, and enters the first rotating shaft 33 through the fixed cylinder 48 and the connecting pipe 47. The gas pressure inside the first rotating shaft 33 decreases, and the first square rod 35 moves upward under the action of the tension of the first spring 331. The first square rod 35 drives the screwdriver head 36 to move, and the screwdriver head 36 disengages from the terminal of the surge suppressor.

[0055] Reference Figure 7It also includes a drive assembly 5, which includes a rotating tube 51, a third rod 52, a third bevel gear 53 and a fourth bevel gear 54. The third rod 52 is slidably connected to the inner wall of one end of the rotating tube 51, and the third bevel gear 53 and the fourth bevel gear 54 are fixedly connected to the outer wall of the rotating tube 51. The third bevel gear 53 is set to correspond to the first bevel gear 313, and the fourth bevel gear 54 is set to correspond to the second bevel gear 44.

[0056] Preferably, in this embodiment, the third rod 52 can slide axially between itself and the inner wall of the rotating tube 51. When the third rod 52 rotates, it can drive the rotating tube 51 to rotate. The rotating tube 51 can drive the third bevel gear 53 and the fourth bevel gear 54 to rotate. When the third bevel gear 53 meshes with the first bevel gear 313, the fourth bevel gear 54 disengages from the second bevel gear 44. At this time, the third bevel gear 53 can drive the first bevel gear 313 to rotate, but the fourth bevel gear 54 cannot drive the second bevel gear 44 to rotate. When the fourth bevel gear 54 meshes with the second bevel gear 44, the third bevel gear 53 disengages from the first bevel gear 313. At this time, the fourth bevel gear 54 can drive the second bevel gear 44 to rotate, but the third bevel gear 53 cannot drive the first bevel gear 313 to rotate.

[0057] Reference Figure 4 and Figure 7 The drive assembly 5 further includes a forward and reverse motor 55, a first gear 56, a second gear 57, a second rotating shaft 58, a fifth bevel gear 59, a sixth bevel gear 510, and a third rotating shaft 511. The forward and reverse motor 55 is installed on the inner wall of the second receiving groove 22. The forward and reverse motor 55 is fixedly connected to the first gear 56. The first gear 56 meshes with the second gear 57. The second gear 57 is fixedly connected to the second rotating shaft 58. The second rotating shaft 58 is rotatably connected to the second fixing block 581. The second fixing block 581 is fixedly connected to the inner wall of the second receiving groove 22. The second rotating shaft 58 is fixedly connected to the fifth bevel gear 59 at both ends. The fifth bevel gear 59 meshes with the sixth bevel gear 510. The sixth bevel gear 510 is fixedly connected to one end of the third rotating shaft 511. The other end of the third rotating shaft 511 is fixedly connected to a third rod 52. The third rotating shaft 511 is rotatably connected to the third fixing block 51111. The third fixing block 51111 is fixedly connected to the inner wall of the second receiving groove 22.

[0058] Preferably, in this embodiment, the second fixing block 581 supports the second rotating shaft 58, and the third fixing block 51111 supports the third rotating shaft 511. When the forward and reverse motor 55 is working, it can drive the second rotating shaft 58 to rotate, the second rotating shaft 58 drives the fifth bevel gear 59 to rotate, the fifth bevel gear 59 drives the sixth bevel gear 510 to rotate, the sixth bevel gear 510 drives the third rotating shaft 511 to rotate, and the third rotating shaft 511 drives the third rod 52 to rotate.

[0059] Reference Figure 7 The rotating tube 51 is fixedly connected to a sleeve 512 at the end away from the third rod 52. The sleeve 512 is fixedly connected to one end of an electric push rod 513, and the other end of the electric push rod 513 is fixedly connected to the inner wall of the second receiving groove 22.

[0060] Preferably, in this embodiment, the rotating tube 51 can rotate within the inner wall of the sleeve 512, and the electric push rod 513 can support the sleeve 512. When the electric push rod 513 extends, it drives the rotating tube 51 to move through the sleeve 512. At this time, the third rod 52 is inserted into the rotating tube 51. The fourth bevel gear 54 meshes with the second bevel gear 44, and the third bevel gear 53 disengages from the first bevel gear 313. At this time, the fourth bevel gear 54 can drive the second bevel gear 44 to rotate, but the third bevel gear 53 cannot drive the first bevel gear 313 to rotate.

[0061] Furthermore, when the electric push rod 513 retracts, the electric push rod 513 drives the rotating tube 51 to move through the sleeve 512. At this time, the third bevel gear 53 meshes with the first bevel gear 313, and the fourth bevel gear 54 disengages from the second bevel gear 44. At this time, the third bevel gear 53 can drive the first bevel gear 313 to rotate, while the fourth bevel gear 54 cannot drive the second bevel gear 44 to rotate.

[0062] In use, first connect one end of the wire to the terminal of the impulse current testing device, place the other end of the wire below the screwdriver head 36, place the surge suppressor into the first receiving slot 21, then connect the wire to the terminal of the surge suppressor, start the forward and reverse motor 55, the forward and reverse motor 55 drives the second rotating shaft 58 to rotate, the second rotating shaft 58 drives the fifth bevel gear 59 to rotate, the fifth bevel gear 59 drives the sixth bevel gear 510 to rotate, the sixth bevel gear 510 drives the third rotating shaft 511 to rotate, and the third rotating shaft 511 drives the third... When rod 52 rotates, the third rod 52 drives the rotating tube 51 to rotate. The third bevel gear 53 and the fourth bevel gear 54 of the rotating tube 51 rotate, controlling the extension of the electric push rod 513. The electric push rod 513 drives the rotating tube 51 to move through the sleeve 512. At this time, the third rod 52 is inserted into the rotating tube 51. At this time, the fourth bevel gear 54 meshes with the second bevel gear 44, and the third bevel gear 53 disengages from the first bevel gear 313. At this time, the fourth bevel gear 54 can drive the second bevel gear 44 to rotate, but the third bevel gear 53 cannot drive the first bevel gear 313 to rotate.

[0063] At this time, the second bevel gear 44 rotates in the forward direction, driving the lead screw 43 to rotate. The internally threaded tube 42, under the action of the thread, moves along the lead screw 43... Figure 11The screwdriver head 36 moves to the right, and the internal threaded tube 42 drives the second receiving shell 41 and the shell 31 to move closer to the first receiving groove 21. After the screwdriver head 36 moves above the terminal of the surge suppressor, the gas in the first chamber 401 on the right side of the piston head 403 is compressed. The gas pressure is greater than the tension of the second spring 463. At this time, the second cylinder 462 moves towards the right. Figure 12 Move to the right in the middle, and reach Figure 13 The fourth tube (465) is in the middle position, while the third tube (464) is blocked and cannot pass through. Figure 11 The gas moves to the right, and at this time the gas in the first chamber 401 enters the second chamber 402. The gas in the second chamber 402 enters the first rotating shaft 33 through the fixed cylinder 48 and the connecting pipe 47. The gas pressure inside the first rotating shaft 33 increases, and the pressure overcomes the tension of the first spring 331 to push the first square rod 35 downward. The first square rod 35 drives the screwdriver head 36 to move, and the screwdriver head 36 contacts the screw on the terminal of the surge suppressor.

[0064] Then, the electric push rod 513 is controlled to retract. The electric push rod 513 drives the rotating tube 51 to move through the sleeve 512. At this time, the third bevel gear 53 meshes with the first bevel gear 313, and the fourth bevel gear 54 disengages from the second bevel gear 44. At this time, the third bevel gear 53 can drive the first bevel gear 313 to rotate, but the fourth bevel gear 54 cannot drive the second square tube 312 to rotate. The second square tube 312 drives the second square rod 311 to rotate, and the second square rod 311 drives the worm gear 310 to rotate. The worm gear 310 drives the worm wheel 39 to rotate. The worm gear 39 drives the first rotating shaft 33 to rotate, which in turn drives the flywheel 37 to rotate. The flywheel 37 drives the transmission chain 38 to rotate, which in turn drives the other flywheels 37 and the first rotating shaft 33 to rotate. The rotation of the first rotating shaft 33 drives the first square tube 34, the first square rod 35 and the screwdriver head 36 to rotate, tightening the screws on the terminals of the surge suppressor. Then, the forward and reverse motor 55 is turned off and automatically connects the protector body and the current transformer together with the wires. There is no need for manual wiring of the surge suppressor, making it convenient and safer to use.

[0065] At this point, the surge suppressor can be tested. After the test, control the forward and reverse motor 55 to rotate in the opposite direction. At this time, the screwdriver head 36 rotates in the opposite direction to before. Loosen the screw on the surge suppressor terminal and pull the wire out of the surge suppressor terminal. Control the electric push rod 513 to extend. The electric push rod 513 drives the rotating tube 51 to move through the sleeve 512. At this time, the third rod 52 is inserted into the rotating tube 51. At this time, the fourth bevel gear 54 meshes with the second bevel gear 44, and the third bevel gear 53 disengages from the first bevel gear 313. At this time, the fourth bevel gear 54 can drive the second bevel gear 44 to rotate, but the third bevel gear 53 cannot drive the first bevel gear 313 to rotate.

[0066] Since the second bevel gear 44 is rotating in the opposite direction at this time, the second bevel gear 44 drives the lead screw 43 to rotate, and the internally threaded tube 42 moves along the lead screw 43 under the action of the thread. Figure 11 When the piston moves to the left, the air pressure in the first chamber 401 on the right side of the piston head 403 decreases. When the air pressure is less than the tension of the second spring 463, the second cylinder 462 returns to its original position. Figure 12 The position in the middle, and the fourth tube 465 towards Figure 12 Move to the left in the middle, and reach Figure 14 At this position, the gas in the second chamber 402 enters the first chamber 401, and enters the first rotating shaft 33 through the fixed cylinder 48 and the connecting pipe 47. The gas pressure inside the first rotating shaft 33 decreases, and under the pulling force of the first spring 331, the first square rod 35 moves upward rapidly to prevent the screwdriver head 36 from getting stuck in the screw on the surge suppressor terminal. As the lead screw 43 continues, the internal threaded pipe 42 drives the second receiving shell 41 and the shell 31 to move away from the first receiving groove 21, that is... Figure 11 Move to the left until the second receiving shell 41 and the shell 31 are reset, so that the surge suppressor in the first receiving slot 21 can be removed. Turn off the forward and reverse motor 55 to complete the experiment on the surge suppressor.

Claims

1. A surge current testing device for a surge suppressor, characterized in that: include The first receiving shell (1) is hollow inside; A fixed base (2) is fixedly connected to a first receiving shell (1) on its outer wall. The fixed base (2) is provided with a first receiving groove (21) and a second receiving groove (22). The fixing component (3) is symmetrically arranged on both sides of the first receiving groove (21). The fixing component (3) includes a housing (31), a fixing plate (32), a first rotating shaft (33), a first square tube (34), a first square rod (35), and a screwdriver head (36). The outer wall of the housing (31) is slidably connected to the inner wall of the second receiving groove (22). The inner wall of the housing (31) is fixedly connected to the fixing plate (32). The fixing plate (32) is rotatably connected to the outer wall of the first rotating shaft (33). The first rotating shaft (33) is fixedly connected to one end of the square tube (34). The other end of the square tube (34) is slidably connected to one end of the first square rod (35). The other end of the first square rod (35) is fixedly connected to the screwdriver head (36). It also includes a transmission assembly (4), which includes a second receiving shell (41), an internally threaded tube (42), a lead screw (43), and a second bevel gear (44). The outer wall of the second receiving shell (41) is fixedly connected to the shell (31), the second receiving shell (41) is fixedly connected to the internally threaded tube (42), the internally threaded tube (42) is threadedly connected to the lead screw (43), and one end of the lead screw (43) is fixedly connected to the second bevel gear (44). The inner wall of the second receiving shell (41) is fixedly connected to a partition (45), which divides the interior of the second receiving shell (41) into a first chamber (401) and a second chamber (402). The inner wall of the first chamber (401) is slidably connected to a piston head (403), which is rotatably connected to the other end of a screw (43). The second receiving shell (41) is fixedly connected to a fixed cylinder (48), which is connected to a first rotating shaft (33) through a connecting pipe (47). The partition (45) is provided with a control component (46), which includes a first cylinder (461), a second cylinder (462), a second spring (463), a third cylinder (464), a fourth cylinder (465), and a third spring (466). The first cylinder (461) is fixedly connected to the partition (45) on its outer wall. The first cylinder (461) is fixedly connected to one end of the second spring (463), and the other end of the second spring (463) is fixedly connected to the second cylinder (462). The second cylinder (462) is fixedly connected to the third cylinder (464), and the third cylinder (464) is fixedly connected to one end of the third spring (466). The other end of the third spring (466) is fixedly connected to the fourth cylinder (465). The drive assembly (5) includes a rotating tube (51), a third rod (52), a third bevel gear (53) and a fourth bevel gear (54). The third rod (52) is slidably connected to the inner wall of one end of the rotating tube (51), and the third bevel gear (53) and the fourth bevel gear (54) are fixedly connected to the outer wall of the rotating tube (51). The third bevel gear (53) is set in relation to the first bevel gear (313), and the fourth bevel gear (54) is set in relation to the second bevel gear (44). The drive assembly (5) further includes a forward and reverse motor (55), a first gear (56), a second gear (57), a second rotating shaft (58), a fifth bevel gear (59), a sixth bevel gear (510), and a third rotating shaft (511). The forward and reverse motor (55) is installed on the inner wall of the second receiving groove (22). The forward and reverse motor (55) is fixedly connected to the first gear (56), the first gear (56) meshes with the second gear (57), the second gear (57) is fixedly connected to the second rotating shaft (58), and the second rotating shaft (58) is rotatably connected to the second fixed shaft (511). Block (581), the second fixed block (581) is fixedly connected to the inner wall of the second receiving groove (22), the two ends of the second rotating shaft (58) are fixedly connected to the fifth bevel gear (59), the fifth bevel gear (59) meshes with the sixth bevel gear (510), the sixth bevel gear (510) is fixedly connected to one end of the third rotating shaft (511), the other end of the third rotating shaft (511) is fixedly connected to the third rod (52), the third rotating shaft (511) is rotatably connected to the third fixed block (5111), and the third fixed block (5111) is fixedly connected to the inner wall of the second receiving groove (22); The rotating tube (51) is fixedly connected to a sleeve (512) at one end away from the third rod (52), and the sleeve (512) is fixedly connected to one end of an electric push rod (513). The other end of the electric push rod (513) is fixedly connected to the inner wall of the second receiving groove (22).

2. The surge current testing device for the surge suppressor as described in claim 1, characterized in that: The screwdriver head (36) is provided in more than one way. The first rotating shaft (33), the first square tube (34) and the first square rod (35) are provided corresponding to the screwdriver head (36). The flywheel (37) is fixedly connected to the first rotating shaft (33), and the flywheel (37) is engaged with the transmission chain (38).

3. The surge current testing device for the surge suppressor as described in claim 1, characterized in that: A worm gear (39) is fixedly connected to one of the first rotating shafts (33). The worm gear (39) meshes with a worm (310). The worm (310) is fixedly connected to one end of a second square rod (311). The other end of the second square rod (311) is fixedly connected to the inner wall of one end of a second square tube (312). The other end of the second square tube (312) is fixedly connected to a first bevel gear (313). The outer wall of the second square tube (312) is fixedly connected to the inner wall of a sleeve (314). The outer wall of the sleeve (314) is rotatably connected to one side of a first fixing block (315). The other side of the first fixing block (315) is fixedly connected to the inner wall of a second receiving groove (22).

4. The surge current testing device for the surge suppressor as described in claim 3, characterized in that: The first rotating shaft (33) is hollow inside. One end of the first spring (331) is fixedly connected to the inner end wall of the first rotating shaft (33), and the other end of the first spring (331) is fixedly connected to the first square rod (35).

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