Lightning sweeping channel test equipment with pneumatic positioning and synchronous adjustment functions

Abstract

The invention relates to the technical field of lightning sweeping channel attachment tests, and discloses a pneumatic positioning and synchronous adjusting lightning sweeping channel test device which comprises an experiment platform, a supporting mechanism is arranged in the middle of the top of the experiment platform, and a test piece is supported on the top of the supporting mechanism. A piston mechanism communicated with the supporting mechanism is arranged in the middle of the bottom of the experimental platform; according to the thunder and lightning sweeping channel test equipment, the supporting plate is arranged to support the test piece, so that the supporting plate moves downwards under the action of the gravity of the test piece, air pressures of upper and lower groups of areas in the piston bin are changed, the air pressure space of the area at the top in the piston bin is increased, and the air pressure is reduced; and meanwhile, the bottom air pressure space in the piston bin is reduced, and the air pressure is increased, so that the first piston plate is extruded to drive the limiting convex block to displace to position the displacement seat, and the functions of automatic positioning and clamping are completed.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning sweep channel attachment tests, and more specifically, to a lightning sweep channel test device with pneumatic positioning and synchronous adjustment. Background Art

[0002] The lightning sweep channel attachment test is a key test method for evaluating the lightning resistance performance of aircraft, power equipment, etc. under a high-voltage arc environment. During the sweep process of the lightning high-voltage arc (usually reaching several hundred kilovolts), destructive impacts will be generated on the test piece due to changes in distance and voltage amplitude. Its breakdown path and attachment characteristics directly affect the insulation performance and safety protection design of the equipment. In the prior art, although international standards (such as DO-160, IEC 61400-24) stipulate the voltage levels and waveform requirements for lightning tests, the specific structure of the test device is not clearly defined, resulting in most laboratories relying on manually building temporary tooling. Such tests require frequent adjustment of the electrode spacing, protective sphere gap, and the position of the test piece to simulate the arc behavior under different working conditions, which poses extremely high requirements for the stability, adjustment efficiency, and repeatability of the device.

[0003] The existing lightning sweep test device has low adjustment efficiency. The electrode spacing and protective sphere gap rely on manual adjustment (such as screw rods or threaded rods), which is time-consuming and lacks precision. Each single experiment requires repeated calibration, extending the cycle to several hours. At the same time, its positioning stability is poor, and mechanical transmission components (such as screw rods) are prone to shift due to vibration or load, resulting in an electrode spacing deviation (more than ±5 mm), affecting the accuracy of breakdown voltage measurement.

[0004] Therefore, there is an urgent need to optimize the technology of the existing lightning sweep test device. Summary of the Invention

[0005] The present invention provides a lightning sweep channel test device with pneumatic positioning and synchronous adjustment to solve the technical problem of quickly adjusting and positioning the distance between the test piece and the electrode in related technologies.

[0006] The present invention achieves the above object through the following technical solutions:

[0007] A lightning sweep channel test device with pneumatic positioning and synchronous adjustment includes an experimental platform. In the middle of the top of the experimental platform, a support mechanism is provided. On the top of the support mechanism, a test piece is supported. In the middle of the bottom of the experimental platform, a piston mechanism connected to the support mechanism is provided. On one side of the experimental platform, a protection mechanism is provided. The protection mechanism is used to protect the test piece, and a hinge base is jointly provided between the protection mechanism and the experimental platform;

[0008] On both sides of the top of the experimental platform, side support platforms are symmetrically arranged, and a longitudinal displacement mechanism is arranged on the top of the side support platforms. The top of the longitudinal displacement mechanism symmetrically supports side support columns. The top of the two groups of side support columns is jointly provided with a support top plate. A height adjustment mechanism is arranged on the top of the support top plate. The bottom of the height adjustment mechanism is provided with a mounting seat, and a first electrode is connected to the bottom of the mounting seat in a universal joint manner;

[0009] An air pipe that is interconnected with the inside of the side support platform is arranged on the outside of the piston mechanism. The air pipe conveys the airflow inside the piston mechanism to the inside of the side support platform.

[0010] As a further optimized solution of the present invention, the support mechanism includes a plurality of groups of springs evenly distributed in the middle of the top of the experimental platform. The top of the springs jointly supports a support plate. In the middle of the top of the support plate, a main suction cup is arranged. The bottom of the main suction cup is provided with a piston cylinder that penetrates to the bottom of the experimental platform.

[0011] As a further optimized solution of the present invention, the piston mechanism includes a piston chamber arranged in the middle of the bottom of the experimental platform. A second piston plate is arranged inside the piston chamber. The bottom of the piston cylinder extends into the piston chamber and is interconnected with the top of the second piston plate. A ventilation hole that is interconnected with the inner top of the piston chamber is arranged at one end of the piston cylinder close to the second piston plate on the outside. A plurality of groups of auxiliary suction cups are locally arranged at the position on the top of the support plate outside the main suction cup.

[0012] As a further optimized solution of the present invention, the longitudinal displacement mechanism includes a first threaded rod arranged on the top of the side support platform. A displacement seat is arranged on the outside of the first threaded rod. The vertical section of the displacement seat is an inverted "L" shaped structure. The first threaded rod penetrates through both ends of the displacement seat. The bottom of the displacement seat fits and slides on the top of the side support platform. One side of the displacement seat fits with the outside of the side support platform.

[0013] As a further optimized solution of the present invention, a first piston plate is arranged inside the side support platform. A limit convex block that extends to the outside of the side support platform is arranged on one side of the first piston plate. The displacement seat is clamped outside the limit convex block. The outside of the first piston plate is in contact with the inner wall of the side support platform and is provided with a sealing ring. A plurality of groups of through holes are evenly distributed at the position on the outside of the side support platform close to the limit convex block.

[0014] As a further optimized solution of the present invention, the height adjustment mechanism includes a main pulley disposed in the middle of the top of the support top plate. The bottom of the main pulley is embedded inside the support top plate and rotates and displaces on the top of the support top plate. A third threaded rod is provided on the top of the main pulley, passing through the main pulley, the support top plate and extending to the bottom of the support top plate. The main pulley is threadedly connected to the third threaded rod. An installation seat is provided at the bottom of the third threaded rod, and a first electrode is universally connected to the bottom of the installation seat.

[0015] As a further optimized solution of the present invention, on one side where the tops of the two displacement seats are close to each other, a fourth threaded rod is installed by bearings. The tops of the two fourth threaded rods penetrate to the top of the support top plate and are both provided with auxiliary pulleys. A transmission belt is commonly provided on the outer sides of the main pulley and the two auxiliary pulleys. A hinge seat is threadedly sleeved on the outer side of the fourth threaded rod. A hinge rod is commonly provided between one end of the hinge seat close to the installation seat and the installation seat. The included angle between the hinge rod and the horizontal direction is greater than 5°.

[0016] As a further optimized solution of the present invention, air pipes communicating with the bottom inside the piston chamber are provided on both sides of the piston chamber. The other ends of the air pipes communicate with the inside of the side support platform. The inside of the side support platform forms a closed air flow path with the bottom inside the piston chamber through the connection of the air pipes.

[0017] As a further optimized solution of the present invention, a transmission shaft is provided at one end of the back of the top of the experimental platform. Driven bevel gears are symmetrically provided on the outer side of the transmission shaft. Active bevel gears meshing with the driven bevel gears are provided at one end of the two first threaded rods close to the transmission shaft. An adjustment compass is provided at one end of the transmission shaft.

[0018] As a further optimized solution of the present invention, the protection mechanism includes a secondary support platform hinged to the experimental platform. A fixed base is provided at one end of the top of the secondary support platform. A second threaded rod bearing-connected to one side of the fixed base is provided in the middle of the top of the secondary support platform. A movable base sleeved on the outer side of the second threaded rod is provided on the top of the secondary support platform. Second electrodes and third electrodes are symmetrically provided at the top of the sides where the fixed base and the movable base are close to each other.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. Through the pneumatic automatic positioning and synchronous linkage adjustment technology, the present invention significantly optimizes the electrode adjustment efficiency and accuracy. After the test piece is placed, the gravity-triggered piston mechanism drives the limit bump to lock, quickly completing the electrode positioning and improving the adjustment efficiency. The synchronous drive system (bevel gear - pulley linkage) realizes the single-knob control of the horizontal and vertical positions of the bilateral electrodes, improves the adjustment accuracy, ensures the consistency of the electrode spacing, and reduces the experimental preparation time and human error.

[0021] 2. The present invention adopts the anti-displacement self-locking design and the arc protection circuit, comprehensively improving the test stability and safety. The articulated rod - threaded rod composite structure suppresses the electrode offset caused by high-voltage vibration, and the spacing fluctuation during the experiment is < 0.2 mm. The bypass discharge channels (the second and third electrodes) direct the breakdown current to be released, reducing the test piece damage rate from 30% to 5%. The modular suction cup interface adapts to test pieces of 50 - 500 mm, quickly completing the replacement. The standardized structure makes the data deviation < 2%, meeting the strict standard requirements such as DO-160. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 is the three-dimensional schematic structure of the present invention Figure 2 ;

[0024] Figure 3 is Figure 2 the enlarged schematic view of the structure at A of

[0025] Figure 4 is the bottom view schematic structure of the present invention

[0026] Figure 5 is the enlarged schematic view of the structure at the protection mechanism of the present invention

[0027] Figure 6 is the enlarged schematic view of the connection structure at the support mechanism, longitudinal displacement mechanism, and height adjustment mechanism of the present invention

[0028] Figure 7 is Figure 6 the enlarged schematic view of the structure at B of

[0029] Figure 8 is the enlarged internal structure cross-sectional view at the longitudinal displacement mechanism of the present invention

[0030] Figure 9 is the enlarged schematic view of the connection structure at the piston mechanism and support mechanism of the present invention

[0031] Figure 10 is the enlarged internal structure cross-sectional view at the piston structure of the present invention

[0032] Figure 11 Yes Figure 10 The enlarged schematic diagram of the structure at position C.

[0033] In the figure: 1. Experimental platform; 2. Side support platform; 3. First threaded rod; 4. Hinge seat; 5. Hinge rod; 6. Mounting seat; 7. First electrode; 8. Displacement seat; 9. Test piece; 10. Fixed base; 11. Sub-support platform; 12. Second threaded rod; 13. Movable base; 14. Sub-pulley; 15. Main pulley; 16. Third threaded rod; 17. Transmission belt; 18. Support top plate; 19. Side support column; 20. Fourth threaded rod; 21. Transmission shaft; 22. Driven bevel gear; 23. Driving bevel gear; 24. Air pipe; 25. Piston chamber; 26. Second electrode; 27. Third electrode; 28. Hinge base; 29. Main suction cup; 30. Spring; 31. Sub-suction cup; 32. Support plate; 33. Limit bump; 34. First piston plate; 35. Through hole; 36. Piston cylinder; 37. Second piston plate; 38. Vent hole. Detailed implementation mode

[0034] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute or add various processes or components as needed. In addition, the features described relative to some examples can also be combined in other examples.

[0035] Example 1

[0036] As Figures 1 to 11As shown in the figure, a lightning sweeping channel test device for pneumatic positioning and synchronous adjustment includes an experimental platform 1. In the middle of the top of the experimental platform 1, a support mechanism is provided. The top of the support mechanism supports a test piece 9. The support mechanism includes several groups of springs 30 evenly distributed in the middle of the top of the experimental platform 1. The tops of the springs 30 jointly support a support plate 32. In the middle of the top of the support plate 32, a main suction cup 29 is provided. At the bottom of the main suction cup 29, a piston cylinder 36 runs through to the bottom of the experimental platform 1. In the middle of the bottom of the experimental platform 1, a piston mechanism connected to the support mechanism is provided. The piston mechanism includes a piston chamber 25 provided in the middle of the bottom of the experimental platform 1. Inside the piston chamber 25, a second piston plate 37 is provided. The bottom of the piston cylinder 36 extends into the interior of the piston chamber 25 and is connected to the top of the second piston plate 37. At one end of the piston cylinder 36 near the second piston plate 37, a ventilation hole 38 communicating with the top inside the piston chamber 25 is provided. At the position outside the main suction cup 29 on the top of the support plate 32, there are several groups of auxiliary suction cups 31 locally. On one side of the experimental platform 1, a protection mechanism is provided. The protection mechanism is used to protect the test piece 9. An articulated base 28 is jointly provided between the protection mechanism and the experimental platform 1. The protection mechanism includes a secondary support platform 11 hinged to the experimental platform 1. At one end of the top of the secondary support platform 11, a fixed base 10 is provided. In the middle of the top of the secondary support platform 11, a second threaded rod 12 is provided, which is connected to one side of the fixed base 10 by a bearing. On the top of the secondary support platform 11, a movable base 13 sleeved outside the second threaded rod 12 is provided. On the top of the sides of the fixed base 10 and the movable base 13 close to each other, a second electrode 26 and a third electrode 27 are symmetrically provided;

[0037] On both sides of the top of the experimental platform 1, side support platforms 2 are symmetrically arranged, and a longitudinal displacement mechanism is arranged on the top of the side support platform 2. The top of the longitudinal displacement mechanism symmetrically supports side support columns 19. The longitudinal displacement mechanism includes a first threaded rod 3 arranged on the top of the side support platform 2. A displacement seat 8 is arranged on the outer side of the first threaded rod 3. The vertical section of the displacement seat 8 is an inverted "L" shaped structure. The first threaded rod 3 penetrates through both ends of the displacement seat 8. The bottom of the displacement seat 8 fits and slides on the top of the side support platform 2. One side of the displacement seat 8 is in close contact with the outer side of the side support platform 2. A first piston plate 34 is arranged inside the side support platform 2. A limit convex block 33 extending to the outside of the side support platform 2 is arranged on one side of the first piston plate 34. The displacement seat 8 is clamped on the outer side of the limit convex block 33. The outer side of the first piston plate 34 is in close contact with the inner wall of the side support platform 2 and is provided with a sealing ring. A number of groups of through holes 35 are evenly distributed at positions on the outer side of the side support platform 2 close to the limit convex block 33. The tops of the two groups of side support columns 19 are jointly provided with a support top plate 18. A height adjustment mechanism is arranged on the top of the support top plate 18. The bottom of the height adjustment mechanism is provided with a mounting seat 6. The bottom of the mounting seat 6 is universally connected to a first electrode 7. The height adjustment mechanism includes a main pulley 15 arranged in the middle of the top of the support top plate 18. The bottom of the main pulley 15 is embedded inside the support top plate 18 and rotates and displaces on the top of the support top plate 18. A third threaded rod 16 penetrating through the main pulley 15, the support top plate 18 and extending to the bottom of the support top plate 18 is arranged on the top of the main pulley 15. The main pulley 15 and the third threaded rod 16 are threadedly connected. The bottom of the third threaded rod 16 is provided with a mounting seat 6. The bottom of the mounting seat 6 is universally connected to a first electrode 7. On the side close to each other at the tops of the two groups of displacement seats 8, a fourth threaded rod 20 is installed by bearings. The tops of the two groups of fourth threaded rods 20 penetrate to the top of the support top plate 18 and are provided with auxiliary pulleys 14. A transmission belt 17 is jointly arranged on the outer sides of the main pulley 15 and the two groups of auxiliary pulleys 14. A hinge seat 4 is threadedly sleeved on the outer side of the fourth threaded rod 20. A hinge rod 5 is jointly arranged between one end of the hinge seat 4 close to the mounting seat 6 and the mounting seat 6. The included angle between the hinge rod 5 and the horizontal direction is greater than 5°. Air pipes 24 communicating with the inner bottom of the piston chamber 25 are arranged on both sides of the piston chamber 25. The other ends of the air pipes 24 communicate with the inside of the side support platform 2. The inside of the side support platform 2 forms a closed air flow path with the inner bottom of the piston chamber 25 through the connection of the air pipes 24. A transmission shaft 21 is arranged at one end of the back of the top of the experimental platform 1. Driven bevel gears 22 are symmetrically arranged on the outer side of the transmission shaft 21. Driving bevel gears 23 meshing with the driven bevel gears 22 are arranged at one ends of the two groups of first threaded rods 3 close to the transmission shaft 21. An adjustment compass is arranged at one end of the transmission shaft 21;

[0038] An air pipe 24 that is in communication with the inside of the side support platform 2 is provided on the outer side of the piston mechanism. The air pipe 24 conveys the air flow inside the piston mechanism to the inside of the side support platform 2.

[0039] The use process of the pneumatic positioning and synchronous adjustment lightning sweep channel test equipment proposed in this embodiment is as follows. When the experimental device is in use, first unfold the secondary support platform 11 and the experimental platform 1, and adjust the rotation of the second threaded rod 12 to drive the third electrode 27 on the top of the movable base 13 to approach the second electrode 26, so that the two are in contact with each other.

[0040] Furthermore, rotate the transmission shaft 21 to drive the two driven bevel gears 22 to rotate accordingly, and then drive the two driving bevel gears 23 to rotate accordingly. Drive the displacement seat 8 on the top of the side support platform 2 to displace through the driving bevel gear 23. At this time, the side surface of the displacement seat 8 slides and displaces outside the limit protrusion 33, and at the same time, the bottom of the displacement seat 8 slides and displaces on the top of the side support platform 2, and drives the side support column 19 and the support top plate 18 to displace as a whole, so that the first electrode 7 is adjusted to a predetermined position.

[0041] Further, place the test piece 9 to be tested on the top of the support plate 32, so that the gravity of the test piece 9 generates a pressure on the top of the support plate 32. At this time, the bottom of the test piece 9 is in contact with the main suction cup 29. Furthermore, a sealed space is formed inside the top of the main suction cup 29, the piston cylinder 36 and the piston chamber 25.

[0042] As the support plate 32 displaces downward, compress the spring 30, and drive the piston cylinder 36 to displace downward. Drive the second piston plate 37 to slide and displace inside the piston chamber 25 through the piston cylinder 36. At this time, the top space inside the piston chamber 25 increases, and thus the air pressure decreases. Under the action of the external atmospheric pressure, squeeze the test piece 9, so that the test piece 9 is firmly adsorbed on the top of the support plate 32.

[0043] And the space at the bottom inside the piston chamber 25 decreases, and thus the gas is compressed. The compressed gas is conveyed to the inside of the side support platform 2 through the air pipe 24. At this time, the compressed air flow squeezes the first piston plate 34. Drive the limit protrusion 33 to displace under the action of the air pressure on the first piston plate 34. Furthermore, make the limit protrusion 33 generate an extrusion force on the outside of the displacement seat 8, so that the displacement seat 8 is positioned, thereby completing the positioning function of the first electrode 7.

[0044] Furthermore, adjust the rotation of the main pulley 15 to drive the transmission belt 17 to rotate, so as to drive the two secondary pulleys 14 to drive the fourth threaded rod 20 to rotate in the same direction. Through the fourth threaded rod 20, drive the two hinge seats 4 to move up and down. At the same time, due to the rotation of the main pulley 15, the third threaded rod 16 is threadedly engaged therewith, so as to drive the third threaded rod 16 to move up and down. Drive the mounting seat 6 and the first electrode 7 to adjust the height, so that the first electrode 7 is adjusted to the position corresponding to the test piece 9. When the hinge seat 4 moves up and down, drive the hinge rod 5 to support the mounting seat 6. When the first electrode 7 reaches the set position height, at this time, due to the combined action of the mounting seat 6, the third threaded rod 16, the first electrode 7 and its own gravity on the hinge rod 5, the hinge seat 4 is squeezed, so that the hinge seat 4 generates a squeezing force on the side of the fourth threaded rod 20, and then a squeezing state is formed between the inside of the hinge seat 4 and the fourth threaded rod 20, avoiding the phenomenon that the first electrode 7 slides downward and displaces;

[0045] Furthermore, connect the test piece 9 and the third electrode 27 to the same electrode, and connect the first electrode 7 and the second electrode 26 to the same electrode opposite to the test piece 9. Then adjust the rotation of the second threaded rod 12 to drive the third electrode 27 on the top of the movable base 13 to displace to the experimental spacing position. At this time, power on and test the high-voltage arc breakdown state between the test piece 9 and the first electrode 7, and the breakdown circuit forms circuit protection through the second electrode 26 and the third electrode 27, so as to prevent the test piece 9 from being broken down and damaged;

[0046] Except for the first electrode 7, the second electrode 26, and the third electrode 27 being connected to the external circuit, the rest of the components are made of insulating materials or coated with insulating coatings;

[0047] After the experiment of the device is completed, directly remove the test piece 9. At this time, under the action of the rebounding force of the spring 30, the support plate 32 is reset. The rest of the components follow the reset due to the change of air pressure, and then complete the test of the test piece 9.

[0048] The specific implementation manners of this embodiment have been described above, but this embodiment is not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A lightning sweeping channel test device for pneumatic positioning and synchronous adjustment, characterized in that, It includes an experimental platform (1). In the middle of the top of the experimental platform (1), a support mechanism is provided. A test piece (9) is supported on the top of the support mechanism. In the middle of the bottom of the experimental platform (1), a piston mechanism connected to the support mechanism is provided. On one side of the experimental platform (1), a protection mechanism is provided. The protection mechanism is used to protect the test piece (9). An articulated base (28) is jointly provided between the protection mechanism and the experimental platform (1). On both sides of the top of the experimental platform (1), side support platforms (2) are symmetrically provided. And on the top of the side support platform (2), a longitudinal displacement mechanism is provided. On the top of the longitudinal displacement mechanism, side support columns (19) are symmetrically supported. On the top of the two groups of side support columns (19), a support top plate (18) is jointly provided. On the top of the support top plate (18), a height adjustment mechanism is provided. At the bottom of the height adjustment mechanism, a mounting seat (6) is provided. The bottom of the mounting seat (6) is universally connected to the first electrode (7). On the outside of the piston mechanism, an air pipe (24) connected to the inside of the side support platform (2) is provided. The air pipe (24) transports the air flow inside the piston mechanism to the inside of the side support platform (2).

2. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 1, characterized in that The support mechanism includes a number of groups of springs (30) evenly distributed in the middle of the top of the experimental platform (1). The springs (30) jointly support a support plate (32) on the top. In the middle of the top of the support plate (32), a main suction cup (29) is provided. At the bottom of the main suction cup (29), a piston cylinder (36) penetrating to the bottom of the experimental platform (1) is provided.

3. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 2, wherein The piston mechanism includes a piston chamber (25) provided in the middle of the bottom of the experimental platform (1). Inside the piston chamber (25), a second piston plate (37) is provided. The bottom of the piston cylinder (36) extends into the piston chamber (25) and is mutually connected to the top of the second piston plate (37). At one end of the outside of the piston cylinder (36) close to the second piston plate (37), a ventilation hole (38) connected to the top inside the piston chamber (25) is provided. At the position on the top of the support plate (32) outside the main suction cup (29), a number of groups of auxiliary suction cups (31) are provided locally.

4. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 3, characterized in that, The longitudinal displacement mechanism includes a first threaded rod (3) provided on the top of the side support platform (2). On the outside of the first threaded rod (3), a displacement seat (8) is provided. The vertical section of the displacement seat (8) is an inverted "L" shaped structure. The first threaded rod (3) penetrates through both ends of the displacement seat (8). The bottom of the displacement seat (8) fits and slides on the top of the side support platform (2). One side of the displacement seat (8) fits with the outside of the side support platform (2).

5. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 4, characterized in that, Inside the side support platform (2), a first piston plate (34) is provided. On one side of the first piston plate (34), a limit bump (33) extending outside the side support platform (2) is provided. The displacement seat (8) is engaged outside the limit bump (33). The outer side of the first piston plate (34) is in close contact with the inner wall of the side support platform (2) and a sealing ring is provided. A number of groups of through holes (35) are evenly distributed at positions on the outer side of the side support platform (2) close to the limit bump (33).

6. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 5, characterized in that, The height adjustment mechanism includes a main pulley (15) provided in the middle of the top of the support top plate (18). The bottom of the main pulley (15) is embedded inside the support top plate (18) and rotates and displaces on the top of the support top plate (18). On the top of the main pulley (15), a third threaded rod (16) passing through the main pulley (15), the support top plate (18) and extending to the bottom of the support top plate (18) is provided. The main pulley (15) and the third threaded rod (16) are threadedly connected. At the bottom of the third threaded rod (16), a mounting seat (6) is provided. At the bottom of the mounting seat (6), a first electrode (7) is connected in a universal joint manner.

7. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 6, characterized in that, On one side where the tops of the two displacement seats (8) are close to each other, a fourth threaded rod (20) is installed by bearings. The tops of the two fourth threaded rods (20) penetrate to the top of the support top plate (18) and are both provided with auxiliary pulleys (14). A transmission belt (17) is jointly provided outside the main pulley (15) and the two auxiliary pulleys (14). A hinge seat (4) is threadedly sleeved on the outer side of the fourth threaded rod (20). A hinge rod (5) is jointly provided between one end of the hinge seat (4) close to the mounting seat (6) and the mounting seat (6). The included angle between the hinge rod (5) and the horizontal direction is greater than 5°.

8. An experimental device for lightning sweeping channels with pneumatic positioning and synchronous adjustment according to claim 7, characterized in that, On both sides of the piston chamber (25), air pipes (24) communicating with the inner bottom of the piston chamber (25) are provided. The other ends of the air pipes (24) communicate with the inside of the side support platform (2). The inside of the side support platform (2) forms a closed air flow path with the inner bottom of the piston chamber (25) through the connection of the air pipes (24).

9. The lightning sweeping channel test equipment for pneumatic positioning and synchronous adjustment according to claim 8, characterized in that, At one end of the back of the top of the experimental platform (1), a transmission shaft (21) is provided. Symmetrically arranged on the outer side of the transmission shaft (21) are driven bevel gears (22). At one end of each of the two first threaded rods (3) close to the transmission shaft (21), a driving bevel gear (23) meshing with the driven bevel gear (22) is provided. At one end of the transmission shaft (21), an adjustment compass is provided.

10. A lightning sweeping channel test device for pneumatic positioning and synchronous adjustment according to claim 9, characterized in that, The protection mechanism includes a secondary support platform (11) hinged to the experimental platform (1). One end of the top of the secondary support platform (11) is provided with a fixed base (10). In the middle of the top of the secondary support platform (11), a second threaded rod (12) is provided which is connected to one side of the fixed base (10) by a bearing. The top of the secondary support platform (11) is provided with a movable base (13) sleeved outside the second threaded rod (12). Second electrodes (26) and third electrodes (27) are symmetrically arranged at the top of the mutually adjacent sides of the fixed base (10) and the movable base (13).

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