Insulation detection device for aviation electrical system

Abstract

The invention belongs to the technical field of aerospace, and discloses an aviation electrical system insulation detection device which comprises a shell and an overall frame serving as the insulation detection device. The display screen is used for displaying measurement data in real time; the function key group integrates the functions of measurement mode switching, data retention and insulation test starting; according to the conversion assembly, through the linkage design of the rotating disc and the rotating switch, the problem that functions cannot be switched when the two hands of a traditional insulation detection device are occupied is thoroughly solved, a worker only needs to rotate the rotating disc with the hand of supporting equipment, the rotating switch can be driven through the driving mechanism, switching of insulation test voltage gears is completed with one hand, and the working efficiency is improved. Compared with a traditional device which needs to frequently put down a connecting line and manually rotate a switch, the design simplifies the operation steps from three steps to one step, shortens the single function switching time, and remarkably improves the efficiency and safety of high-altitude operation or narrow space detection.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aerospace, and particularly relates to an insulation detection device for an aviation electrical system. BACKGROUND

[0002] The aviation electrical system, as a key component of an airplane, is responsible for providing power support for various devices and systems of the airplane, including an avionics system, a flight control system, cabin equipment, etc., and the insulation performance thereof is directly related to the flight safety and reliability of the airplane. If the insulation of the aviation electrical system is problematic, it may lead to electrical short circuit, device failure, and even serious accidents such as fire, endangering the life safety of passengers and crew members. Therefore, it is crucial to accurately and efficiently detect the insulation of the aviation electrical system.

[0003] In the current insulation detection work of the aviation electrical system, the existing insulation detection device has the problem of inconvenient operation. When performing insulation detection, the worker usually needs to hold the insulation detection device with one hand and hold a test pen with the other hand, and connect the test pen with the detected object. In this process, because both hands are occupied, the worker cannot directly rotate the rotary switch of the detection device, so it is not convenient to switch different insulation test voltage levels.

[0004] If the function switching is to be realized, the worker has to put down the hand originally holding the test pen to rotate the rotary switch. This operation not only increases the operation steps and reduces the detection efficiency, but also may cause the connection line to be loose or deviate from the position, affecting the accuracy of detection. In addition, frequently putting down and picking up the test pen also increases the risk of misoperation in the detection process, thereby affecting the reliability and stability of the entire aviation electrical system insulation detection work. SUMMARY

[0005] The present application is directed to the problem in the prior art that the worker usually needs to hold the insulation detection device with one hand and hold the test pen with the other hand, and connect the test pen with the detected object. In this process, because both hands are occupied, the worker cannot directly rotate the rotary switch of the detection device, so it is not convenient to switch different insulation test voltage levels. If the function switching is to be realized, the worker has to put down the hand originally holding the test pen to rotate the rotary switch. This operation not only increases the operation steps and reduces the detection efficiency, but also may cause the connection line to be loose or deviate from the position, affecting the accuracy of detection. In addition, frequently putting down and picking up the test pen also increases the risk of misoperation in the detection process, thereby affecting the reliability and stability of the entire aviation electrical system insulation detection work.

[0006] An insulation detection device for an aviation electrical system comprises:

[0007] The shell is a whole frame of the insulation detection device.

[0008] The display screen is used for displaying the measurement data in real time.

[0009] The function button group is integrated with the functions of measurement mode switching, data keeping and insulation test starting.

[0010] The rotary switch is used for selecting different measurement function gears.

[0011] The test jack group is used for connecting various test probes.

[0012] The conversion assembly comprises a rotary disc, a push block, a positioning block, an arc-shaped plate and a driving mechanism.

[0013] The rotary disc is rotatably connected to the inner wall of the shell; the push block is slidably connected to the rotary disc; the positioning block is fixedly connected to the push block; the arc-shaped plate is slidably connected to the rotary disc; and the driving mechanism is arranged between the shell and the rotary disc.

[0014] When the arc-shaped plate moves inside the rotary disc, the push block is driven to move, and the push block separates the positioning block from the inner wall of the shell through the inclined surface structure; at this time, the rotary disc can be freely rotated and drives the driving mechanism to operate, and finally the rotary switch is synchronously rotated by the driving mechanism.

[0015] As a preferred technical solution of the above technical solution, the rotary disc is internally provided with a containing cavity, and the rotary disc is externally provided with an elastic non-slip pad.

[0016] As a preferred technical solution of the above technical solution, the mutual abutting surfaces of the push block and the positioning block are both provided with inclined surfaces, and the two inclined surfaces abut against each other.

[0017] As a preferred technical solution of the above technical solution, a connecting rod is connected between the push block and the arc-shaped plate, the connecting rod penetrates the rotary disc, and an extension piece is arranged between one end of the push block and the inner wall of the rotary disc.

[0018] As a preferred technical solution of the above technical solution, an elastic piece one is connected between the inner wall of the positioning block and the shell, and the elastic piece one drives the positioning block to move vertically along the top end of the push block.

[0019] As a preferred technical solution of the above technical solution, the driving mechanism comprises:

[0020] The stand is connected to the rotary switch.

[0021] The linkage structure is connected to the rotary switch and the rotary disc.

[0022] As a preferred embodiment of the above technical solution, the linkage structure is composed of two synchronous gears and a chain, wherein the two synchronous gears are respectively connected to the column and the rotating disk, and the chain is sleeved on the outside of the two synchronous gears.

[0023] As a preferred embodiment of the above technical solution, a linkage mechanism is provided between the rotating disk and the outer casing, the linkage mechanism comprising:

[0024] A disc, connected to the outer casing;

[0025] The second elastic element is connected to the outer side of the disk;

[0026] The ball bearing is connected to the movable end of the second elastic element.

[0027] As a preferred embodiment of the above technical solution, an arc-shaped groove is provided on the inner side of the rotating disk corresponding to one end of the ball, and the number of balls and the number of arc-shaped grooves are the same.

[0028] The beneficial effects of this invention are as follows:

[0029] (1) The conversion component completely solves the problem of traditional insulation testing devices being unable to switch functions when both hands are occupied by the linkage design of the rotating disk and the rotary switch. The operator only needs to use the hand supporting the equipment to rotate the rotating disk, and the rotary switch can be driven by the drive mechanism to achieve the switching of insulation test voltage levels with one hand. Compared with the traditional device, which requires frequent lowering of the connecting wire and manual rotation of the switch, this design simplifies the operation steps from three steps to one step, shortens the time of single function switching, and significantly improves the efficiency and safety of high-altitude operations or testing in confined spaces.

[0030] (2) This design can reduce gear shift caused by vibration, making the position of the rotary switch more accurate after rotation. It also prevents the rotary switch from being accidentally rotated while holding the insulation detection device, thus ensuring that the position of the rotary switch remains consistent after rotation and improving detection accuracy. Attached Figure Description

[0031] Figure 1 The diagram shown is a structural schematic of an insulation testing device for an aviation electrical system according to Embodiment 1;

[0032] Figure 2 The diagram shown is a schematic of the installation structure of the rotating disk in Embodiment 1;

[0033] Figure 3 The diagram shown is a schematic diagram of the installation structure of the linkage structure in Embodiment 1;

[0034] Figure 4 The diagram shown is a schematic of the installation structure of the arc-shaped plate in Embodiment 1;

[0035] Figure 5The diagram shown is a schematic diagram of the installation structure of the elastic element 2 in Embodiment 1;

[0036] Figure 6 What is shown is Figure 5 Schematic diagram of the structure of region A in the middle;

[0037] Figure 7 The image shown is a physical diagram of an insulation testing device for an aviation electrical system according to Embodiment 1.

[0038] In the diagram: 1. Outer shell; 2. Display screen; 3. Function button; 4. Rotary switch; 5. Test socket; 61. Rotary disk; 62. Receiving cavity; 63. Elastic anti-slip pad; 64. Push block; 65. Positioning block; 66. Connecting rod; 67. Arc plate; 68. Telescopic component; 69. Elastic component one; 610. Limiting groove; 611. Positioning groove; 613. Round hole; 71. Disk; 72. Elastic component two; 73. Ball bearing; 74. Arc groove; 81. Column; 82. Linkage structure. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0040] Example 1

[0041] This invention provides an insulation testing device for aviation electrical systems, such as... Figures 1 to 7 As shown, the device includes: a housing 1, a display screen 2, function buttons 3, a rotary switch 4, a test socket 5, and a conversion assembly; the housing 1 serves as the overall frame of the insulation testing device; the display screen 2 is used to display measurement data, such as insulation resistance values ​​and voltage values; the function buttons 3 include "MODE," "HOLD," and "INSULATIONTEST" buttons, used to switch measurement modes, hold measurement data, and start insulation testing; the rotary switch 4 is used to select different measurement functions, such as insulation resistance testing (ranges such as 250V-500V-1000V); the test socket 5 is used to connect to the test... The test pen; the conversion assembly includes: a rotating disk 61, a push block 64, a positioning block 65, an arc plate 67, and a drive mechanism; the rotating disk 61 is rotatably connected to the inner wall of the outer casing 1; the push block 64 is slidably connected to the rotating disk 61; the positioning block 65 is fixedly connected to the push block 64; the arc plate 67 is slidably connected to the rotating disk 61; the drive mechanism is located between the outer casing 1 and the rotating disk 61; wherein, when the arc plate 67 moves inside the rotating disk 61, it drives the push block 64 to move, and the push block 64 separates the positioning block 65 from the inner wall of the outer casing 1 through the inclined structure; at this time, the rotating disk 61 can rotate freely and drive the drive mechanism to run, and finally the drive mechanism drives the rotary switch 4 to rotate synchronously.

[0042] In current insulation testing of aviation electrical systems, existing insulation testing devices are inconvenient to operate. When conducting insulation testing, staff usually need to use one hand to support the insulation testing device and the other hand to support the test probes and connect them to the object being tested. During this process, because both hands are occupied, it is difficult for staff to directly rotate the rotary switch 4 of the testing device, thus making it difficult to conveniently switch between different insulation test voltage levels.

[0043] To switch functions, staff have to put down their hands that were supporting the test probes to turn the rotary switch 4. This operation not only increases the number of steps and reduces testing efficiency, but may also cause the connection wires to loosen or shift, affecting the accuracy of the test. In addition, frequently putting down and picking up the test probes increases the risk of misoperation during the test, which in turn affects the reliability and stability of the insulation testing of the entire aviation electrical system.

[0044] To address this issue, a conversion component was designed. This component, through the linkage between the rotating disk 61 and the rotary switch 4, solves the problem of traditional insulation testing devices being unable to switch functions when both hands are occupied. The operator only needs to use the hand supporting the equipment to rotate the rotating disk 61, which in turn drives the rotary switch 4 through the drive mechanism, enabling the switching of insulation test voltage levels (such as 250V / 500V / 1000V) with one hand. Compared to traditional devices that require frequent manual rotation of the rotary switch 4 by putting down the test probes, this design simplifies the operation steps from three steps to one, shortens the time for switching functions, and significantly improves the efficiency and safety of high-altitude operations or testing in confined spaces.

[0045] Furthermore, this design reduces gear shifting caused by vibration and reduces wear on the rotary switch 4 due to frequent operation, thereby making the position of the rotary switch 4 more accurate after rotation.

[0046] In use, connect the test probes to the test socket 5 via the connecting wire, then connect the test probes to the object being tested. Next, the operator selects the measurement mode using the function button 3, and then observes the measurement results on the display screen 2. When it is necessary to switch the insulation test voltage level, press the arc plate 67 inward. The arc plate 67 pushes and drives the push block 64 to move. The push block 64 drives the positioning block 65 to move along the direction perpendicular to the surface of the rotating disk 61 (longitudinal) through the inclined structure, so that it separates from the limiting groove 610 on the inner wall of the rotating disk 61. Then rotate the rotating disk 61. At this time, the rotating disk 61 drives the rotary switch 4 to rotate synchronously through the drive mechanism. When the rotary switch 4 rotates, the insulation test voltage level is switched.

[0047] Specifically, a display screen 2 is embedded in the top of one end of the outer casing 1. Multiple function buttons 3 are equidistantly connected to one end of the outer casing 1 below the display screen 2. A rotary switch 4 is rotatably connected to one end of the outer casing 1 below the function buttons 3. Multiple test sockets 5 are installed at one end of the outer casing 1 below the rotary switch 4 (all of the above are prior art and will not be elaborated upon here). A drive mechanism is connected to one end of the rotary switch 4 inside the outer casing 1. A rotating disk 61 is connected to one end of the drive mechanism. Multiple arc-shaped plates 67 are slidably connected inside the rotating disk 61 (in this application, there are 8 plates, with the same rotation and stopping positions as the rotary switch 4). Figure 7 As shown in the figure, a push block 64 is fixedly installed on one end of a plurality of arc plates 67. A positioning block 65 is attached to one end face of the push block 64 and the positioning block 65 is slidably connected inside the outer shell 1. The mutual contact surfaces of the push block 64 and the positioning block 65 are both provided with inclined surfaces, and the two inclined surfaces are attached to each other, so that when the push block 64 moves laterally, it drives the positioning block 65 to move vertically.

[0048] like Figure 2 and Figure 3 As shown, since the staff needs to drive the rotating disk 61 to rotate, in order to prevent the staff from pushing the rotating disk 61 in vain due to the smooth surface of the rotating disk 61, the rotating disk 61 is provided with a receiving cavity 62 and an elastic anti-slip pad 63 is provided on the outside of the rotating disk 61.

[0049] When in use, the elastic anti-slip pad 63 increases the friction between the worker's hands and the rotating disk 61, making it easier for the worker to push the rotating disk 61 to rotate and preventing the worker from doing nothing during the pushing process due to the smooth surface.

[0050] Specifically, a receiving cavity 62 is provided in the middle of the outer side of the rotating disk 61, and an elastic anti-slip pad 63 is fitted onto the outer ring of the rotating disk 61.

[0051] like Figure 5 and Figure 6 As shown, the worker's hand moves the push block 64 through the arc plate 67. At this time, the arc plate 67 needs to move synchronously with the push block 64 during the pushing process. After the movement, when the worker's hand separates from the arc plate 67, the push block 64 and the arc plate 67 need to be reset. For this purpose, a connecting rod 66 is connected between the push block 64 and the arc plate 67. The connecting rod 66 passes through the inside of the rotating disk 61. A telescopic component 68 is installed between one end of the push block 64 and the inner wall of the rotating disk 61.

[0052] In use, as the arc plate 67 moves, it drives the push block 64 to move through the connecting rod 66, so that the push block 64 and the arc plate 67 move synchronously under the action of the connecting rod 66. And as the push block 64 moves, it drives the telescopic member 68 to compress. When the worker's hand is separated from the arc plate 67, the push block 64 is driven to reset under the reset force of the telescopic member 68.

[0053] Specifically, a connecting rod 66 is snapped between the opposing surfaces of the arc plate 67 and the push block 64. The connecting rod 66 is slidably connected to the inside of the rotating disk 61 through a hole. A telescopic component 68 is snapped between the end of the push block 64 away from the arc plate 67 and the inner wall of the rotating disk 61. The telescopic component 68 is a spring telescopic rod. A corresponding limiting groove 610 is opened inside the rotating disk 61 corresponding to the outer side of the push block 64. The push block 64 is slidably connected inside the limiting groove 610. The number of limiting grooves 610 is equal to the number of gears switched by the rotary switch 4. A corresponding positioning groove 611 is opened inside the rotating disk 61 corresponding to the outer side of the arc plate 67. The arc plate 67 is slidably connected inside the positioning groove 611.

[0054] like Figure 5 and Figure 6 As shown, due to the horizontal or inclined placement of the insulation detection device, the position of the positioning block 65 is inconsistent due to the effect of the inclination direction, which makes it impossible for the positioning block 65 to engage with the rotating disk 61. At this time, the position of the positioning block 65 is kept consistent under the action of tension, so that the positioning block 65 can stably engage and fix the rotating disk 61. For this purpose, an elastic element 69 is connected between the inner wall of the positioning block 65 and the outer shell 1. The elastic element 69 is a spring telescopic rod, which drives the positioning block 65 to move vertically along the top of the push block 64.

[0055] In use, the positioning block 65 is driven to move under the action of the elastic element 69. At this time, regardless of whether the positioning block 65 is placed horizontally or tilted, the tension of the elastic element 69 allows the positioning block 65 to still enter the interior of the rotating disk 61.

[0056] Specifically, a circular hole 613 is provided at the top of the positioning block 65, and an elastic element 69 is snapped into place at the position inside the circular hole 613 at the top of the positioning block 65. The two ends of the elastic element 69 are fixedly connected to the positioning block 65 and the outer shell 1, respectively, and the positioning block 65 is slidably connected inside the outer shell 1.

[0057] like Figure 2 and Figure 3As shown, since the rotating disk 61 and the rotary switch 4 rotate synchronously through a drive mechanism, a connecting structure is needed to enable them to rotate synchronously. Therefore, the drive mechanism includes: a column 81 and a linkage structure 82; the column 81 is connected to the rotary switch 4; the linkage structure 82 is connected to the rotary switch 4 and the rotating disk 61. The linkage structure 82 is a chain drive mechanism, composed of two synchronous gears and a chain. The two synchronous gears are respectively connected to the column 81 and the rotating disk 61, and the chain is sleeved on the outside of the two synchronous gears.

[0058] When in use, the operator rotates the rotating disk 61, which in turn drives the column 81 to rotate via the linkage structure 82. When the column 81 rotates, it drives the rotary switch 4 to rotate.

[0059] Specifically, a column 81 is fixedly installed at one end of the rotary switch 4 inside the housing 1. The column 81 and the housing 1 are rotatably connected by a bushing. A linkage structure 82 is connected to the outside of the column 81 by a key. The linkage structure 82 is composed of two synchronous gears and a chain. One of the synchronous gears is connected to the column 81 by a key, and the other synchronous gear is fixedly connected to the rotating disk 61. The synchronous gear is rotatably installed on the housing 1 by a bushing.

[0060] like Figure 4 and Figure 5 As shown, since the rotating disk 61 can rotate, but the extent of rotation is unknown, a linkage mechanism is provided. When the rotating disk 61 rotates to a predetermined position, the difficulty of rotation is changed by increasing the resistance, thus facilitating the warning of personnel. For this purpose, a linkage mechanism is provided between the rotating disk 61 and the outer shell 1. The linkage mechanism includes: a disc 71, an elastic element 72, a ball 73, and an arc groove 74. The disc 71 is connected to the outer shell 1; the elastic element 72 is connected to the outside of the disc 71; the ball 73 is connected to the movable end of the elastic element 72; an arc groove 74 is provided on the inner side of the rotating disk 61 corresponding to one end of the ball 73, and the number of balls 73 and arc grooves 74 are the same.

[0061] In use, when the rotating disk 61 rotates, the arc-shaped groove 74 of the rotating disk 61 moves along the outer side of the ball 73. At this time, the ball 73 moves along the edge of the arc-shaped groove 74, causing the distance between the ball 73 and the arc-shaped groove 74 to change (the distance between the ball 73 and the center line of the disk 71 changes from far to near). At this time, a compressive force is generated, and the compressive force is transmitted to the second elastic element 72. Since one end of the second elastic element 72 is blocked by the disk 71 and cannot move, the second elastic element 72 is compressed and generates stored energy. The energy generated when the second elastic element 72 is compressed increases the rotational resistance of the rotating disk 61.

[0062] Specifically, a disc 71 is fixedly installed inside the outer shell 1 at the center of the rotating disk 61. Multiple elastic elements 72 are equidistantly embedded on the outer side of the disc 71. The movable end of the elastic element 72 is rotatably connected to a ball 73. An arc-shaped groove 74 is opened on the inner wall of the rotating disk 61 at the position corresponding to the outer side of the ball 73.

[0063] Working principle: In actual use, the test probe cable is connected to the test socket 5 of the outer casing 1, and then the test probe is contacted with the test point of the aviation electrical system. Then, the insulation test mode is started by pressing the "INSULATIONTEST" button in the function button 3. During the insulation test mode, the gear needs to be switched. At this time, the operator presses the elastic anti-slip pad 63 on the outside of the rotating disk 61 with one hand. The elastic anti-slip pad 63 deforms and presses the arc plate 67, causing the arc plate 67 to slide along the positioning groove 611 towards the inside of the rotating disk 61. When the arc plate 67 slides, it pushes the push block 64 to move laterally through the connecting rod 66 and squeezes the telescopic component 68, thus compressing the telescopic component 68. At the same time, the inclined surface of the push block 64 squeezes the inclined surface of the positioning block 65. Figure 6 This forces the positioning block 65 to move along the limiting groove 610 and disengage from the limiting groove 610 of the rotating disk 61. As the positioning block 65 moves, the internal elastic element 69 is compressed. While maintaining the pressed state, the rotating disk 61 is rotated. The elastic anti-slip pad 63 provides operating friction. The rotating disk 61 drives the synchronous gear of the linkage structure 82 to rotate, and the chain drives another synchronous gear to rotate. At this time, the key connection drives the column 81 and the rotary switch 4 to rotate synchronously, causing the rotary switch 4 to rotate and switch the insulation test voltage level. Then, the arc plate 67 is released. At this time, the reset force of the telescopic element 68 forces the arc plate 67 to reset through the connecting rod 66 and the push block 64. Simultaneously, due to the elastic... When component 69 releases its stored energy, the positioning block 65 moves vertically into the top of the rotating disk 61 (not in the limiting groove 610). Then, as it continues to rotate, the positioning block 65 enters the inner part of the second limiting groove 610 on the rotating disk 61. At this time, the elastic component 69 drives the positioning block 65 into the second limiting groove 610, forcing the rotating disk 61 to be locked in place by the positioning block 65. This causes the rotary switch 4 to switch to one gear. When it is necessary to switch to the target gear (there are multiple gears), multiple adjustments are required to switch the rotary switch 4 to the target insulation test voltage gear (250V / 500V / 1000V).

[0064] Furthermore, as the rotating disk 61 rotates, the arc-shaped groove 74 on the inner side of the rotating disk 61 slides along the ball 73. The ball 73 squeezes the elastic element 72 to generate resistance. When the rotation reaches the preset gear, the ball 73 gets stuck in the lowest point of the arc-shaped groove 74. The sudden change in resistance forms obvious gear feedback, indicating to the staff that the target gear has been reached.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An insulation testing device for aviation electrical systems, characterized in that, include: The outer casing (1) serves as the overall frame of the insulation testing device; Display screen (2) is used to display measurement data in real time; The function key group (3) integrates the functions of measurement mode switching, data holding and insulation test start; Rotary switch (4) is used to select different measurement function levels; Test jack group (5) is used to connect various test probes; The conversion assembly includes: a rotary disk (61), a pusher (64), a positioning block (65), an arc plate (67), and a drive mechanism; A rotating disk (61) is rotatably connected to the inner wall of the outer shell (1); a push block (64) is slidably connected to the rotating disk (61); a positioning block (65) is fixedly connected to the push block (64); an arc plate (67) is slidably connected to the rotating disk (61); and a driving mechanism is disposed between the outer shell (1) and the rotating disk (61). When the arc plate (67) moves inside the rotating disk (61), it drives the push block (64) to move. The push block (64) separates the positioning block (65) from the inner wall of the outer shell (1) through an inclined structure. At this time, the rotating disk (61) can rotate freely and drive the driving mechanism to run. Finally, the driving mechanism drives the rotary switch (4) to rotate synchronously.

2. The insulation testing device for aviation electrical systems according to claim 1, characterized in that, The rotating disk (61) has an internal cavity (62) and an elastic anti-slip pad (63) is provided on the outside of the rotating disk (61).

3. The insulation testing device for aviation electrical systems according to claim 2, characterized in that, The mutual contact surfaces of the push block (64) and the positioning block (65) are both provided with inclined surfaces, and the two inclined surfaces are in contact with each other.

4. The insulation testing device for aviation electrical systems according to claim 2, characterized in that, A connecting rod (66) is connected between the push block (64) and the arc plate (67). The connecting rod (66) passes through the interior of the rotating disk (61). A telescopic component (68) is installed between one end of the push block (64) and the inner wall of the rotating disk (61).

5. The insulation testing device for aviation electrical systems according to claim 2, characterized in that, An elastic element (69) is connected between the inner wall of the positioning block (65) and the outer shell (1), and the elastic element (69) drives the positioning block (65) to move vertically along the top of the push block (64).

6. The insulation testing device for aviation electrical systems according to claim 2, characterized in that, The drive mechanism includes: A column (81) is connected to the rotary switch (4); The linkage structure (82) is connected to the rotary switch (4) and the rotary disk (61).

7. The insulation testing device for aviation electrical systems according to claim 6, characterized in that, The linkage structure (82) is composed of two synchronous gears and a chain, wherein the two synchronous gears are respectively connected to the column (81) and the rotating disk (61), and the chain is sleeved on the outside of the two synchronous gears.

8. The insulation testing device for aviation electrical systems according to claim 2, characterized in that, A linkage mechanism is provided between the rotating disk (61) and the outer casing (1), the linkage mechanism including: A disk (71) is connected to the outer casing (1); Elastic element 2 (72) is connected to the outside of the disk (71); The ball (73) is connected to the movable end of the elastic element (72).

9. The insulation testing device for an aviation electrical system according to claim 8, characterized in that, The inner side of the rotating disk (61) is provided with an arc-shaped groove (74) corresponding to one end of the ball (73), and the number of the ball (73) and the arc-shaped groove (74) are the same.

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