An aerospace wire and cable insulation layer detection device

Abstract

The application discloses an aerospace wire and cable insulation layer detection device, and relates to the technical field of detection devices, solving the problem of low fixing strength of cables and the need to use various types of detection equipment when multiple aspects of the cable need to be detected. The aerospace wire and cable insulation layer detection device comprises a detection device body, a multi-aspect detection mechanism is fixedly installed at the middle position of the upper end face of the detection device body, a cable is arranged in the multi-aspect detection mechanism, and a high-strength fixing mechanism is arranged on the outer surface of the multi-aspect detection mechanism below the cable. The multi-aspect detection mechanism can be used for detecting stretching, folding, heating and the content of toxic components of the cable, thereby increasing the functionality of the device. When the high-strength fixing mechanism is used to fix the cable, multiple spikes can be inserted into the interiors of the two ends of the cable, and the fixing strength is ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a testing device for the insulation layer of aerospace wires and cables. Background Technology

[0002] To ensure the safety of aerospace engineering, fluoroplastics, whose performance is several times higher than that of ordinary plastics, are generally used to manufacture wires and cables for aerospace applications. As carriers of electricity and energy, the quality of wires and cables determines transmission loss, cost savings, and operational safety. The structure of wires and cables is very simple, generally consisting of two parts: a conductor and an insulation layer. The conductor is a metal core, usually made of copper wire, while the insulation layer is made of plastic. Therefore, we can use methods for testing plastics to check the quality of wire and cable insulation layers. When it is necessary to test the product quality of cable insulation layers, various tests can be conducted on the cable by stretching, folding, igniting, and detecting the composition of ignition gases using different equipment. Such equipment for stretching, folding, igniting, and detecting the composition of ignition gases on cable insulation layers is a testing device for insulation layers of aerospace-grade wires and cables.

[0003] However, existing wire and cable insulation layer testing devices suffer from problems such as inaccurate testing if dirt adheres to the insulation layer, and difficulty in cleaning the dirt. Patent number CN218443824U, entitled "An Insulation Layer Testing Device," solves these problems by employing an air-blowing dust removal component. When the insulation layer is placed in the testing slot, air is blown into the slot to remove dust adhering to the slot and dust on the insulation layer, preventing dust accumulation and further improving the accuracy of insulation layer thickness measurement.

[0004] However, when using this type of wire and cable insulation layer testing device to test the insulation layer, only one aspect can be tested. When multiple aspects need to be tested, multiple different models of insulation layer testing devices are required. Furthermore, the fixing method for securing the wire and cable has low strength. When subjected to large tensile forces such as stretching or folding, the cable may fall off. Therefore, it does not meet the current requirements. To address this, we propose an insulation layer testing device for aerospace-grade wires and cables. Summary of the Invention

[0005] The purpose of this invention is to provide an insulation layer testing device for aerospace wires and cables, in order to solve the problems mentioned in the background art, such as the fact that when using this kind of wire and cable insulation layer testing device to test the insulation layer, only one aspect can be tested. When multiple aspects need to be tested, multiple different models of insulation layer testing devices are required. In addition, the fixing method of the wire and cable has low strength, and when it is subjected to large tensile forces such as stretching or folding, the cable may fall off.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an aerospace wire and cable insulation layer testing device, comprising a testing device body, wherein a plurality of testing mechanisms are fixedly installed at the middle position of the upper end face of the testing device body, wherein a cable is provided inside the plurality of testing mechanisms, and a high-strength fixing mechanism is provided below the cable and installed on the outer surface of the plurality of testing mechanisms.

[0007] The multi-faceted testing mechanism includes a drive mechanism, a cable pulling and bending testing mechanism, and a cable flammability testing mechanism. The drive mechanism can drive the cable pulling and bending testing mechanism to stretch or fold the cable, and the cable flammability testing mechanism can heat the cable and detect its combustion gases.

[0008] The high-strength fixing mechanism includes a transmission mechanism, an automatic fixing mechanism, two cylindrical blocks A, two semi-circular cable clamps B, and multiple spikes. The two cylindrical blocks A and the two semi-circular cable clamps B have multiple rows of spikes arranged from left to right on their opposite surfaces. The drive mechanism on the multi-directional detection mechanism can drive the transmission mechanism to make the two cylindrical blocks A move inward or outward synchronously. The automatic fixing mechanism can drive the two semi-circular cable clamps B to move inward or outward synchronously.

[0009] Preferably, the cable pulling and bending detection mechanism includes a slide rail, an electric slide table, a cable fixing head A, a metal plate and a cable fixing head B. The electric slide table is slidably installed on one side of the inside of the slide rail, and the cable fixing head A is provided on one side of the outer surface of the electric slide table.

[0010] A metal plate is provided in front of the electric slide, and a cable fixing head B is fixedly installed on the side of the metal plate facing the cable fixing head A.

[0011] Preferably, the drive mechanism includes a stepper motor, a one-way rotating ratchet, a motor shaft, and a one-way rotating synchronous ratchet. The stepper motor is fixedly mounted on one side of the outer surface of the electric slide. The output shaft of the stepper motor is connected to the motor shaft inserted into the housing of the cable fixing head A through a coupling. The position where the motor shaft contacts the cable fixing head A is connected by a roller bearing. The one-way rotating synchronous ratchet is fixedly sleeved on the outer surface of the motor shaft located inside the cable fixing head A.

[0012] A one-way rotating ratchet is fixedly sleeved on one side of the outer surface of the motor shaft and is fixed between the outer shell of the cable fixing head A and the outer shell.

[0013] Preferably, the cable flammability testing mechanism includes a transparent glass cover, an air composition detector, a ignition source detection probe, a gas pipe, and a positioning frame. The transparent glass cover is connected to the main body of the testing device via a rotating shaft. Two ignition source detection probes are symmetrically fixedly installed on both sides inside the transparent glass cover. A gas pipe is connected to one side of the upper end face of each of the two ignition source detection probes. An air composition detector penetrating the transparent glass cover is fixedly installed on one side of the upper end face of the transparent glass cover.

[0014] The transparent glass cover is provided with a positioning frame located on the upper surface of the detection device body.

[0015] Preferably, the transmission mechanism includes a synchronous sprocket, a synchronous chain, a guide rod, a rotating shaft, a cylindrical block A, a wavy slide rail groove A, a movable rod A, and a semi-circular cable fixing clamp A. The synchronous sprocket and the unidirectional rotating synchronous ratchet are connected in series via the synchronous chain.

[0016] Preferably, the axis of the synchronous sprocket is connected to a rotating shaft, and two cylindrical blocks A are symmetrically fixed on both sides of the outer surface of the rotating shaft. The outer surfaces of the two cylindrical blocks A are provided with wavy slide rail grooves A.

[0017] Preferably, the two semi-circular cable clamps A are located on opposite sides inside the cable fixing head A. A movable rod A is fixedly provided on the surface of the semi-circular cable clamp A facing the cylindrical block A, and a guide rod that can move through the two semi-circular cable clamps A is fixedly provided on one side inside the cable fixing head A.

[0018] Preferably, the automatic fixing mechanism includes a fixed motor shaft, a bevel gear B, a cylindrical block B, a wave-shaped slide rail groove B, a movable rod B, a semi-circular cable fixing clamp B, a long rod, and a fixed motor. The fixed motor is fixedly installed inside the cable fixing head B on one side. The shaft of the fixed motor is connected to a fixed motor shaft, and a bevel gear A is fixedly sleeved on one side of the outer surface of the fixed motor shaft.

[0019] Preferably, a long rod is provided in front of the fixed motor shaft, with both ends connected to the cable fixing head B through roller bearings. Two cylindrical blocks B are symmetrically fixed on both sides of the outer surface of the long rod, and the outer surface of the cylindrical blocks B is provided with a wave-shaped slide rail groove B.

[0020] Two bevel gears B are symmetrically meshed on both sides of the outer surface of the bevel gear A, and are respectively fixedly sleeved on the outer surfaces of the two cylindrical blocks B.

[0021] Preferably, the two semi-circular cable clamps B are located on both sides inside the cable fixing head B, and a movable rod B that slides into the wavy slide rail groove B is fixed on the surface of the semi-circular cable clamp B facing the cylindrical block B.

[0022] The multi-faceted testing mechanism has multiple control buttons installed sequentially from left to right on the outer surface of the testing device body on one side.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention places both ends of the cable into the interiors of cable fixing head B and cable fixing head A, respectively. A high-strength fixing mechanism allows two semi-circular cable fixing clips A and B, located inside cable fixing head A and cable fixing head B, to move inward. During this movement, spikes on their inner walls pierce the cable, thus fixing it in place. The spikes piercing the cable effectively prevent the fixed cable from falling off. This technical solution increases the stability of cable testing.

[0025] 2. When using this invention, the transparent glass cover is opened. After the two ends of the cable are fixed inside the cable fixing head A and the cable fixing head B respectively, the cable can be tested in many aspects such as stretching, folding, ignition point and content of toxic components by a multi-faceted testing mechanism, thereby increasing the functionality of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the overall structure of the present invention when the transparent glass cover is opened;

[0028] Figure 3 This is a side view of the bottom structure of the transparent glass cover in this invention;

[0029] Figure 4 This is a top view of the overall structure of the present invention when the transparent glass cover is not present, showing a partial internal view.

[0030] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0031] Figure 6 For the present invention Figure 4 Enlarged view of the structure at point B in the middle.

[0032] In the diagram: 1. Detection device body; 2. Multi-directional detection mechanism; 201. Slide rail; 202. Electric slide table; 203. Stepper motor; 204. Cable fixing head A; 205. One-way rotating ratchet; 206. Metal plate; 207. Cable fixing head B; 208. Transparent glass cover; 209. Air composition detector; 210. Fire source detection probe; 211. Gas pipe; 212. Positioning frame; 213. Motor shaft; 214. One-way rotating synchronous ratchet; 3. High-strength fixing mechanism; 301. Spike; 30 2. Synchronous sprocket; 303. Synchronous chain; 304. Guide rod; 305. Shaft; 306. Cylindrical block A; 307. Wavy slide rail groove A; 308. Movable rod A; 309. Semi-circular cable clamp A; 310. Fixed motor shaft; 311. Bevel gear A; 312. Bevel gear B; 313. Cylindrical block B; 314. Wavy slide rail groove B; 315. Movable rod B; 316. Semi-circular cable clamp B; 317. Long rod; 318. Fixed motor; 4. Control button; 5. Cable. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Please see Figures 1 to 6 An embodiment of the present invention provides: an aerospace wire and cable insulation layer testing device, including a testing device body 1, a multi-faceted testing mechanism 2 fixedly installed at the middle position of the upper end face of the testing device body 1, a cable 5 provided inside the multi-faceted testing mechanism 2, and a high-strength fixing mechanism 3 installed on the outer surface of the multi-faceted testing mechanism 2 below the cable 5.

[0035] The multi-faceted testing mechanism 2 includes a drive mechanism, a cable pulling and bending testing mechanism, and a cable flammability testing mechanism. The drive mechanism can drive the cable pulling and bending testing mechanism to stretch or fold the cable 5. The cable flammability testing mechanism can heat the cable 5 and detect its combustion gases.

[0036] The high-strength fixing mechanism 3 includes a transmission mechanism, an automatic fixing mechanism, two cylindrical blocks A306, two semi-circular cable clamps B316, and multiple spikes 301. Multiple rows of spikes 301 are arranged from left to right on the opposite surfaces of the two cylindrical blocks A306 and the two semi-circular cable clamps B316. The drive mechanism on the multi-directional detection mechanism 2 can drive the transmission mechanism to make the two cylindrical blocks A306 move inward or outward synchronously. The automatic fixing mechanism can drive the two semi-circular cable clamps B316 to move inward or outward synchronously.

[0037] The cable bending detection mechanism includes a slide rail 201, an electric slide table 202, a cable fixing head A204, a metal plate 206, and a cable fixing head B207. The electric slide table 202 is slidably installed on one side inside the slide rail 201, and the cable fixing head A204 is provided on one side of the outer surface of the electric slide table 202.

[0038] A metal plate 206 is provided in front of the electric slide table 202. A cable fixing head B207 is fixedly installed on the surface of the metal plate 206 facing the cable fixing head A204. The drive mechanism includes a stepper motor 203, a one-way rotating ratchet 205, a motor shaft 213, and a one-way rotating synchronous ratchet 214. The stepper motor 203 is fixedly installed on one side of the outer surface of the electric slide table 202. The output shaft of the stepper motor 203 is connected to the motor shaft 213 inserted into the housing of the cable fixing head A204 through a coupling. The position where the motor shaft 213 contacts the cable fixing head A204 is connected by a roller bearing. The one-way rotating synchronous ratchet 214 is fixedly sleeved on the outer surface of the motor shaft 213 located inside the cable fixing head A204.

[0039] A one-way rotating ratchet 205 is fixedly sleeved on one side of the outer surface of the motor shaft 213 and fixed to the outer shell of the cable fixing head A204; the cable flammability detection mechanism includes a transparent glass cover 208, an air composition detector 209, a fire source detection probe 210, a gas pipe 211 and a positioning frame 212. The transparent glass cover 208 is connected to the detection device body 1 through a shaft. Two fire source detection probes 210 are symmetrically fixedly installed on both sides inside the transparent glass cover 208. A gas pipe 211 is connected to one side of the upper end face of each of the two fire source detection probes 210. An air composition detector 209 that penetrates the transparent glass cover 208 is fixedly installed on one side of the upper end face of the transparent glass cover 208.

[0040] A positioning frame 212 is located on the upper surface of the detection device body 1 below the transparent glass cover 208. In use, check the operation of each mechanism, move the device to the working area, connect the power supply, open the transparent glass cover 208, and insert both ends of the cable 5 into the cable fixing head B207 and cable fixing head A204 respectively. Start the stepper motor 203 to drive the connected motor shaft 213 to rotate counterclockwise. Only when the motor shaft 213 rotates counterclockwise will the unidirectional rotating synchronous ratchet 214, which is fixedly sleeved on the outer surface of the motor shaft 213, rotate accordingly. When the unidirectional rotating synchronous ratchet 214 rotates, the synchronous sprocket 302, which is connected in series with it via the synchronous chain 303, will rotate together. When the synchronous sprocket 302 rotates, the shaft connected to the axis of the synchronous sprocket 302... The two cylindrical blocks A306 fixedly sleeved on both sides of the outer surface of the rotating shaft 305 will rotate together. When the cylindrical blocks A306 rotate, the movable rods A308 inserted into the wavy slide rail grooves A307 on the outer surface of the cylindrical blocks A306 will move along the track of the wavy slide rail grooves A307. During the movement of the two movable rods A308, the two semi-circular cable fixing clips A309 fixed to the two movable rods A308 will move inward or outward synchronously. As the semi-circular cable fixing clips A309 move inward, the spikes 301 on the inner wall of the semi-circular cable fixing clips A309 will pierce into the inside of the cable 5 placed inside the cable fixing head A204. In this way, the cable 5 placed inside the cable fixing head A204 can be fixed.

[0041] Then, the fixed motor 318 is started. The fixed motor 318 drives the connected fixed motor shaft 310 and the bevel gear A311 fixedly sleeved on the outer surface of the fixed motor shaft 310 to rotate. When the bevel gear A311 rotates, the two bevel gears B312 meshing with it will rotate together. Since the bevel gears B312 are fixedly sleeved on the outer surface of the cylindrical block B313, the cylindrical block B313 will also rotate when the bevel gears B312 rotate. When the cylindrical block B313 rotates, the movable... The moving rod B315 will move along the wavy slide rail groove B314. When the two wavy slide rail grooves B314 move inward or outward in sync, the two semi-circular cable fixing clamps B316 fixed thereto will also move accordingly. As the semi-circular cable fixing clamps B316 move inward, the spikes 301 on the inner wall of the semi-circular cable fixing clamps B316 will be inserted into the inside of the cable 5 placed inside the cable fixing head B207. Through the spikes 301 that pierce into the inside of the cable 5 in the above technical solution, the cable 5 can be fixed with high strength, which can effectively prevent the cable 5 from falling off during the testing process.

[0042] The transmission mechanism includes a synchronous sprocket 302, a synchronous chain 303, a guide rod 304, a rotating shaft 305, cylindrical blocks A306, a wave-shaped slide rail groove A307, a movable rod A308, and a semi-circular cable clamp A309. The synchronous sprocket 302 and the unidirectional rotating synchronous ratchet 214 are connected in series via the synchronous chain 303. A rotating shaft 305 is connected to the axis of the synchronous sprocket 302. Two cylindrical blocks A306 are symmetrically fixed on both sides of the outer surface of the rotating shaft 305. The outer surface of both cylindrical blocks A306 is provided with a wave-shaped slide rail groove A307. Two semi-circular cable clamps A309 are located on both sides inside the cable fixing head A204. A movable rod A308 is fixed on the surface of the semi-circular cable clamp A309 facing the cylindrical block A306 and slides into the wave-shaped slide rail groove A307. One side of the cable fixing head A204 is also fixed. A guide rod 304 is fixedly provided, which movably passes through two semi-circular cable clamps A309; the automatic fixing mechanism includes a fixed motor shaft 310, a bevel gear B312, a cylindrical block B313, a wave-shaped slide rail groove B314, a movable rod B315, a semi-circular cable clamp B316, a long rod 317, and a fixed motor 318. The fixed motor 318 is fixedly installed inside the cable fixing head B207 on one side. The shaft of the fixed motor 318 is connected to a fixed motor shaft 310. A bevel gear A311 is fixedly sleeved on one side of the outer surface of the fixed motor shaft 310. A long rod 317 is provided in front of the fixed motor shaft 310, and both ends of the long rod 317 are connected to the cable fixing head B207 through roller bearings. Two cylindrical blocks B313 are symmetrically fixedly sleeved on both sides of the outer surface of the long rod 317. The outer surface of the cylindrical blocks B313 is provided with a wave-shaped slide rail groove B314.

[0043] Two bevel gears B312 are symmetrically meshed on both sides of the outer surface of the bevel gear A311 and are respectively fixedly sleeved on the outer surface of the two cylindrical blocks B313; two semi-circular cable clamps B316 are located on both sides inside the cable clamp head B207, and a movable rod B315 is fixedly provided on the surface of the semi-circular cable clamp B316 facing the cylindrical block B313, which slides into the wave-shaped slide rail groove B314;

[0044] The multi-faceted testing mechanism 2 has multiple control buttons 4 installed sequentially from left to right on the outer surface of the testing device body 1.

[0045] After both ends of cable 5 are fixed inside cable fixing head A204 and cable fixing head B207 respectively, the electric slide 202 connected to cable fixing head A204 can be activated to move cable fixing head A204 outward, thereby stretching cable 5 and observing whether the outer surface of cable 5 cracks. Then, the stepper motor 203 is activated, which causes the motor shaft 213 connected to it to rotate. Only when the motor shaft 213 rotates clockwise will the one-way rotating ratchet 205 sleeved on the outer surface of the motor shaft 213 rotate accordingly. When the one-way rotating ratchet 205 rotates, the cable fixing head A204 fixed to it will also rotate accordingly. As the cable fixing head A204 rotates, cable 5 will wrap around the outer surface of cable fixing head A204 and fold. During this process, the electric slide 202 gradually moves towards cable fixing head B207. The cable 5 moves in the direction of 207. When the cable fixing head A204 contacts the cable fixing head B207, the stepper motor 203 is turned off. The electric slide 202 drives the cable fixing head A204 to move outward. During this process, the cable 5 will be gradually straightened. Then, observe whether there are white marks at the bend of the cable. After that, cover the transparent glass cover 208 and activate the two fire source detection probes 210 located on the inner wall of the transparent glass cover 208. The fire source detection probes 210 can spray fire source to act on the cable 5 located between the two. During this process, observe whether the cable 5 is ignited. The air composition detector 209 installed on the upper surface of the transparent glass cover 208 detects the air composition inside the transparent glass cover 208 at this time to determine whether it contains toxic gas. By using the above technical solution, the detection device body 1 can perform various types of tests on the cable 5.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for testing the insulation layer of wires and cables for aerospace applications, comprising a testing device body (1), characterized in that: A multi-faceted testing mechanism (2) is fixedly installed at the middle position of the upper end face of the main body (1) of the testing device. The multi-faceted testing mechanism (2) is equipped with a cable (5) inside. A high-strength fixing mechanism (3) is installed on the outer surface of the multi-faceted testing mechanism (2). The multi-faceted testing mechanism (2) includes a driving mechanism, a cable stretching and bending testing mechanism and a cable flammability testing mechanism. The driving mechanism can drive the cable stretching and bending testing mechanism to stretch or fold the cable (5). The cable flammability testing mechanism can heat the cable (5) and detect its combustion gases. The high-strength fixing mechanism (3) includes a transmission mechanism, an automatic fixing mechanism, two semi-circular cable fixing clips A (309), two semi-circular cable fixing clips B (316), and multiple spikes (301). Multiple rows of spikes (301) are arranged from left to right on the opposite surfaces of the two semi-circular cable fixing clips A (309) and the two semi-circular cable fixing clips B (316). The driving mechanism on the multi-directional detection mechanism (2) can drive the transmission mechanism to make the two semi-circular cable fixing clips A (309) move inward or outward synchronously. The automatic fixing mechanism can drive the two semi-circular cable fixing clips B (316) to move inward or outward synchronously. The cable pulling and bending detection mechanism includes a slide rail (201), an electric slide table (202), a cable fixing head A (204), a metal plate (206), and a cable fixing head B (207). The electric slide table (202) is slidably installed on one side inside the slide rail (201), and the cable fixing head A (204) is provided on one side of the outer surface of the electric slide table (202). A metal plate (206) is provided in front of the electric slide (202), and a cable fixing head B (207) is fixedly installed on the surface of the metal plate (206) facing the cable fixing head A (204). The drive mechanism includes a stepper motor (203), a one-way rotating ratchet (205), a motor shaft (213), and a one-way rotating synchronous ratchet (214). The stepper motor (203) is fixedly installed on one side of the outer surface of the electric slide (202). The output shaft of the stepper motor (203) is connected to the motor shaft (213) inserted into the housing of the cable fixing head A (204) via a coupling. The positions where the motor shaft (213) contacts the cable fixing head A (204) are connected by roller bearings. The one-way rotating synchronous ratchet (214) is fixedly sleeved on the outer surface of the motor shaft (213) located inside the cable fixing head A (204). A one-way rotating ratchet (205) is fixedly sleeved on one side of the outer surface of the motor shaft (213) and fixed between it and the outer shell of the cable fixing head A (204). The transmission mechanism includes a synchronous sprocket (302), a synchronous chain (303), a guide rod (304), a rotating shaft (305), a cylindrical block A (306), a wave-shaped slide rail groove A (307), and a movable rod A (308). The synchronous sprocket (302) and the unidirectional rotating synchronous ratchet (214) are connected in series via the synchronous chain (303). The synchronous sprocket (302) is connected to a rotating shaft (305). Two cylindrical blocks A (306) are symmetrically fixed on both sides of the outer surface of the rotating shaft (305). The outer surfaces of the two cylindrical blocks A (306) are provided with wave-shaped slide rail grooves A (307). The two semi-circular cable clamps A (309) are located on both sides inside the cable clamp A (204). A movable rod A (308) is fixed on the surface of the semi-circular cable clamp A (309) facing the cylindrical block A (306) and is inserted into the wave-shaped slide rail groove A (307). A guide rod (304) is fixed on one side inside the cable clamp A (204) and is movable through the two semi-circular cable clamps A (309). When the motor shaft (213) rotates counterclockwise, the unidirectional rotating synchronous ratchet (214) rotates. When the motor shaft (213) rotates clockwise, the unidirectional rotating ratchet (205) rotates.

2. The aerospace wire and cable insulation layer testing device according to claim 1, characterized in that: The cable flammability testing mechanism includes a transparent glass cover (208), an air composition detector (209), a fire source detection probe (210), a gas pipe (211), and a positioning frame (212). The transparent glass cover (208) is connected to the main body (1) of the testing device via a rotating shaft. Two fire source detection probes (210) are symmetrically fixedly installed on both sides inside the transparent glass cover (208). A gas pipe (211) is connected to one side of the upper end face of each of the two fire source detection probes (210). An air composition detector (209) that penetrates the transparent glass cover (208) is fixedly installed on one side of the upper end face of the transparent glass cover (208). The transparent glass cover (208) is provided with a position positioning frame (212) located on the upper surface of the detection device body (1).

3. The aerospace wire and cable insulation layer testing device according to claim 2, characterized in that: The automatic fixing mechanism includes a fixed motor shaft (310), a bevel gear B (312), a cylindrical block B (313), a wave-shaped slide rail groove B (314), a movable rod B (315), a long rod (317), and a fixed motor (318). The fixed motor (318) is fixedly installed on one side inside the cable fixing head B (207). The shaft of the fixed motor (318) is connected to a fixed motor shaft (310). A bevel gear A (311) is fixedly sleeved on one side of the outer surface of the fixed motor shaft (310).

4. The aerospace wire and cable insulation layer testing device according to claim 3, characterized in that: The front of the fixed motor shaft (310) is provided with a long rod (317) whose two ends are connected to the cable fixing head B (207) through roller bearings. Two cylindrical blocks B (313) are symmetrically fixed on both sides of the outer surface of the long rod (317). The outer surface of the cylindrical block B (313) is provided with a wave-shaped slide rail groove B (314). Two bevel gears B (312) are symmetrically meshed on both sides of the outer surface of the bevel gear A (311), and are respectively fixedly sleeved on the outer surface of the two cylindrical blocks B (313).

5. The aerospace wire and cable insulation layer testing device according to claim 4, characterized in that: The two semi-circular cable clamps B (316) are located on both sides inside the cable fixing head B (207). A movable rod B (315) is fixed on the surface of the semi-circular cable clamp B (316) facing the cylindrical block B (313) and is slidably inserted into the wave-shaped slide rail groove B (314). The multi-faceted testing mechanism (2) has multiple control buttons (4) installed sequentially from left to right on the outer surface of the testing device body (1).

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