Corrosion resistance detection device for aerospace composite material

Abstract

The invention belongs to the technical field of corrosion resistance detection, and relates to an aerospace composite material corrosion resistance detection device, which comprises a base and a plurality of detection box bodies connected to the base and provided with built-in temperature control systems, a box door slides at the opening of the detection box body; a nozzle pipe is arranged on the detection box body; a containing groove is formed in the inner bottom of the detection box body; a sliding frame penetrates through the detection box body in a sliding mode, and a supporting disc located in the containing groove is arranged on the lower portion of the sliding frame; the sliding frame is provided with a bending part located outside the detection box body, and the detection box body is connected with a mounting plate. Different nozzle pipes and accommodating grooves in a plurality of detection box bodies are respectively used for working so as to carry out diversified corrosion resistance detection; during detection, the supporting disc enables the materials to be located in the containing groove, the box door is in a closed state to guarantee safety and avoid affecting the working environment, after detection is completed, the supporting disc drives the materials to move out of the containing groove, then the box door is automatically opened, and operation of manually moving out the materials and opening the box door is omitted.

Description

Technical Field

[0001] The invention belongs to the technical field of corrosion resistance detection, and in particular relates to a corrosion resistance detection device for composite materials used in aerospace. Background Art

[0002] The aerospace industry places extremely high demands on materials, especially in terms of corrosion resistance. Since spacecraft and aircraft are exposed to a variety of harsh environments during operation, such as high humidity, extreme temperature changes, chemical corrosion, etc., it is necessary to ensure that the materials used can maintain their physical and mechanical properties for a long time under these conditions.

[0003] Traditional corrosion resistance testing methods mainly include natural environment exposure tests and laboratory accelerated corrosion tests. Natural environment exposure tests usually take months to years and cannot meet the needs of rapid evaluation; while many laboratory accelerated corrosion tests can only simulate specific corrosion environments and are difficult to fully reflect the complex working conditions in actual use.

[0004] For example, the patent with patent announcement number CN112595660B discloses a new material corrosion resistance testing equipment, which can only spray corrosive liquid directly onto the plate on the placement rack through the connecting pipe and the atomizing nozzle. The detection method is single, and it can neither control the ambient temperature nor reasonably evaluate the corrosion resistance of the material in the liquid medium for a long time. In addition, no corresponding protective equipment is set during the detection process, and the safety is low. The corrosive liquid will react chemically with the particulate matter in the air, which is easy to cause air pollution and affect the working environment.

[0005] In view of the shortcomings of the above-mentioned prior art, a corrosion resistance detection device for composite materials for aerospace is designed to overcome the shortcomings of the prior art, diversify detection methods, and has high safety to avoid air pollution caused by corrosive liquids. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a composite material corrosion resistance detection device for aerospace use which has diversified detection methods, high safety and avoids air pollution caused by corrosive liquids.

[0007] In order to solve the above technical problems, the present invention provides a corrosion resistance detection device for composite materials for aerospace, comprising a base and a plurality of detection boxes connected to the upper side of the base, which are arranged on the left and right and each of which is equipped with a temperature control system; the temperature control system comprises an electric heater and a small refrigerator; a box door is slidably provided at the front opening of the detection box; nozzle tubes are provided on the left and right inner sides of the upper part of the detection box, the nozzle of the left nozzle tube is a spray nozzle, and the nozzle of the right nozzle tube is a shower nozzle; a holding tank for loading corrosive solution is provided at the inner bottom of the detection box, and the upper and lower parts of the holding tank are respectively connected to an injection pipe with a built-in control valve and a discharge pipe with a built-in control valve; a sliding frame is slidably penetrated through the upper part of the detection box, and the sliding frame is The lower part of the moving frame is provided with a supporting plate located in the accommodating groove, the supporting plate is concave in shape and has a leakage hole on it; the sliding frame has a bending portion located outside the detection box body, and the upper rear side of the detection box body is connected to two left and right opposite mounting plates, the upper part of the sliding frame slides through the mounting plate, and a compression spring surrounding the sliding frame is connected between the upper part of the sliding frame and the mounting plate, and the compression spring is used for resetting the downward sliding frame, and two left and right opposite lifting cylinders are installed on the base, and a resistance plate suitable for squeezing the upper side of the bending portion is connected between the telescopic rods of the two lifting cylinders, and a stopper 1 located above the resistance plate is connected to one side of the box door, and the resistance plate is located between the stopper 1 and the bending portion, and a stopper 2 located below the resistance plate is connected to the front side of the box door.

[0008] Preferably, it also includes a rotating rod that rotates and passes through the detection box body and the containing groove. A mechanical seal is formed between the rotating rod and the containing groove to prevent liquid from leaking out when the rotating rod rotates. The support plate is rotatably arranged on the sliding frame. The lower part of the support plate has a first connecting structure, and the upper part of the rotating rod has a second connecting structure suitable for plugging into the first connecting structure. The rotating rod is driven to rotate by a rotating drive group, and the rotating drive group is arranged on the base.

[0009] Preferably, the first connecting structure is a hollow structure at the lower part of the support plate, and the hollow position of the support plate has two interference parts that are opposite to each other and protrude inward, and the interference parts and the hollow structure constitute the first connecting structure of the support plate; the upper part of the rotating rod protrudes with a pushing part that constitutes the second connecting structure, and the pushing part is suitable for being inserted into the hollow position of the support plate and pushing the interference part.

[0010] Preferably, the rotary drive group includes a bevel gear 1 connected to the lower part of the rotating rod, a rotating shaft located between all the rotating rods rotates on the base, the rotating shaft is connected to the same number of bevel gear 2 as bevel gear 1, the bevel gear 2 is meshed with bevel gear 1 in a one-to-one correspondence, a servo motor is installed on the base, and the output shaft of the servo motor is connected to the rotating shaft.

[0011] Preferably, an air purification system for purifying the air in the detection box is also included. The air purification system includes an exhaust group arranged on the box door. A sealing group is provided between the exhaust group and the box door. The sealing group controls the communication and separation between the exhaust group and the interior of the detection box.

[0012] Preferably, the exhaust group includes an exhaust hood connected to the front side of the box door, and one side of the exhaust hood is connected to a telescopic pipe for an external suction device.

[0013] Preferably, the sealing group includes a bracket connected between the exhaust hood and the box door, the bracket is located inside the exhaust hood, and a plurality of circumferentially evenly arranged baffle blades rotate between the bracket and the exhaust hood. The baffle blades are fan-shaped, and two adjacent baffle blades fit tightly together. An interference frame is connected to one end of the baffle blade close to the exhaust hood, and a swivel rotates on the exhaust hood. The swivel is connected to the same number of interference rods as the interference frames, and the interference rods move one-to-one and pass through the interference frames.

[0014] Preferably, the exhaust hood is circular in shape, the outer side of the baffle blade fits tightly with the inner side of the exhaust hood in annular contact, the middle part of the bracket is a polygonal part, the baffle blade is rotatably arranged on the polygonal part of the bracket, the number of sides of the polygonal part is the same as the number of baffle blades and corresponds one-to-one to the baffle blades, and the inner side of the baffle blade fits tightly with the side edge of the polygonal part in plane contact.

[0015] Preferably, it also includes a connecting plate and a pulling plate respectively connected to one side of the exhaust hood and one side of the rotating ring, a tension spring is connected between the pulling plate and the connecting plate, the tension spring is used to reset the rotating rotating plate, the lower part of the rotating ring is connected to a resistance column, the lowest position of the resistance column is lower than the lowest position of the stop block; a roller is rotatably provided at the lower part of the resistance column, and the roller replaces the resistance column to contact and cooperate with the resistance plate.

[0016] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects: 1. Use different nozzle tubes and holding tanks in multiple testing boxes to perform diversified corrosion resistance tests. During the test, the support plate keeps the material in the holding tank, and the box door is closed to ensure safety and avoid affecting the working environment. After the test is completed, the support plate drives the material out of the holding tank, and then the box door opens automatically, eliminating the need for manual removal of materials and opening of the box door.

[0017] 2. When the support plate moves down and dives into the receiving groove, the first connecting structure on the support plate will be plugged into the second connecting structure on the rotating rod. At this time, driving the rotating rod to rotate can drive the material to rotate through the support plate in the receiving groove, so as to adjust the position of the material and facilitate the nozzle tube to spray liquid to different positions of the material for corrosion resistance testing, thereby performing a more comprehensive corrosion resistance test.

[0018] 3. When the detection is completed, the contact plate moves up to loosen the bent part, so that the material in the receiving groove is automatically moved out under the action of the compression spring. Then the contact plate squeezes the contact column, and the rotating ring rotates to automatically open the baffle to ventilate. After the ventilation is completed, the contact plate continues to move up to open the box door. The steps of material removal, ventilation and door opening are interrelated and coordinated with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of the present invention.

[0020] Figure 2 It is a cross-sectional view of the base and the detection box of the present invention.

[0021] Figure 3 It is a schematic diagram of the rear side of the detection box of the present invention.

[0022] Figure 4 It is a schematic diagram of the sliding frame, the supporting plate and the compression spring of the present invention.

[0023] Figure 5 For the present invention Figure 1 Enlarged view of point A.

[0024] Figure 6 It is a schematic cross-sectional view of the support plate and the rotating rod of the present invention.

[0025] Figure 7 It is a schematic diagram of the box door and air purification system of the present invention.

[0026] Figure 8 It is a cross-sectional view of the box door and the exhaust hood of the present invention.

[0027] Fig. 9 It is a schematic diagram of the bracket, baffle and interference frame of the present invention.

[0028] Fig.10 It is a schematic diagram of the swivel, the interference rod and the interference column of the present invention.

[0029] The marks in the drawings provided by the present invention are: 1-base, 2-detection box, 21-box door, 211-block 1, 212-block 2, 22-nozzle tube, 23-accommodating groove, 231-injection pipe, 232-discharge pipe, 31-sliding frame, 311-bending portion, 32-support plate, 321-contact portion, 33-mounting plate, 34-compression spring, 41-lifting cylinder, 42-contact plate, 51-rotating rod, 511-pushing part, 52-rotating shaft, 53-servo motor, 6-air purification system, 61-exhaust group, 611-exhaust hood, 612-telescopic tube, 62-sealing group, 621-bracket, 6211-polygonal part, 622-blocking blade, 623-resistance frame, 624-rotating ring, 625-resistance rod, 71-connecting plate, 72-pull plate, 73-tension spring, 74-resistance column. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] A corrosion resistance testing device for composite materials used in aerospace, such as Figure 1-Figure 5As shown, it includes a base 1 and a plurality of detection boxes 2 connected to the upper side of the base 1, which are arranged on the left and right and each of which has a built-in temperature control system; the temperature control system includes an electric heater and a small refrigerator to ensure temperature regulation, which is a prior art and will not be described in detail; a box door 21 is slidably provided at the front opening of the detection box 2, and the box door 21 is moved down and closed to allow the material to undergo a closed corrosion resistance test in the detection box 2 to avoid the phenomenon that the corrosive liquid reacts with impurities in the air and causes air pollution that affects the working environment, and the box door 21 is moved up and opened to allow the material in the detection box 2 to be normally taken in and out; nozzle tubes 22 are provided on the left and right inner sides of the upper part of the detection box 2, and the spray of the left nozzle tube 22 The nozzle is a spray nozzle, and the left nozzle tube 22 is used to atomize the salt solution and evenly spray it onto the material surface for salt spray detection. The nozzle of the right nozzle tube 22 is a spray nozzle, and the right nozzle tube 22 is used to continuously spray the acid solution onto the material surface for acid rain detection. The inner bottom of the detection box 2 is provided with a holding tank 23 for loading corrosive solution to immerse and detect the corrosion resistance of the material, so that it is suitable for evaluating the corrosion resistance of the material in liquid media such as fuel and hydraulic oil. The upper and lower parts of the holding tank 23 are respectively connected with an injection pipe 231 with a built-in control valve and a discharge pipe 232 with a built-in control valve. The injection pipe 231 is used to conveniently inject the corrosive solution into the holding tank 23 and discharge it. The tube 232 conveniently discharges the corrosive solution from the containing tank 23, and different nozzle tubes 22 and containing tanks 23 in multiple detection boxes 2 are used to work respectively to simultaneously perform different methods of corrosion resistance tests on multiple materials, and the detection methods are diversified. When the nozzle tube 22 is used, the sprayed liquid will also be collected by the containing tank 23, so as to avoid liquid leakage when the box door 21 is opened; the upper part of the detection box 2 is slidably penetrated by a sliding frame 31, and the lower part of the sliding frame 31 is provided with a supporting plate 32 located in the containing tank 23, the supporting plate 32 is concave and has a leakage hole, and the supporting plate 32 is used to support the material in the containing tank 23, and the upward movement of the sliding frame 31 will drive the material through the supporting plate 32 The material is removed from the corrosive solution in the containing tank 23, so as to facilitate the material placement; the sliding frame 31 has a bending portion 311 located outside the detection box body 2, and two left and right opposite mounting plates 33 are connected to the upper rear side of the detection box body 2. The upper part of the sliding frame 31 slides through the mounting plate 33, and a compression spring 34 surrounding the sliding frame 31 is connected between the upper part of the sliding frame 31 and the mounting plate 33. The compression spring 34 is used for resetting the sliding frame 31 that moves downward. Two left and right opposite lifting cylinders 41 are installed on the base 1, and a contact plate 42 suitable for squeezing the upper side of the bending portion 311 is connected between the telescopic rods of the two lifting cylinders 41. When the contact plate 42 is squeezed to the upper side of the bending portion 311 (such as Figure 5), the compression spring 34 is in a deformed state, and the material on the support plate 32 is located in the receiving groove 23 for corrosion resistance testing. After the test is completed, the control cylinder drives the contact plate 42 to move up and gradually loosen the bent portion 311. The sliding frame 31 will drive the material to move up a distance from the receiving groove 23 through the support plate 32 under the action of the compression spring 34 returning to the original position. A stopper 211 located above the contact plate 42 is connected to one side of the box door 21. The contact plate 42 is located between the stopper 211 and the bent portion 311. The contact plate 42 will gradually approach the stopper 211 in the process of moving up and loosening the bent portion 311 until the support plate 32 drives the material to move out of the receiving groove 23, and then The rear contact plate 42 continues to move upward and will drive the box door 21 to move upward and open through the stop block 211, so that the material is first removed from the receiving groove 23 and then the box door 21 is automatically and synchronously opened to avoid liquid splashing, thereby maximizing the safety of corrosion resistance testing; if the box door 21 needs to be closed again, the control cylinder drives the contact plate 42 to move downward to release the stop block 211, and the box door 21 will move downward and reset to close under the action of gravity. The front side of the box door 21 is connected to the stop block 212 located below the contact plate 42. The downward movement of the contact plate 42 will squeeze the stop block 212 downward to actively push the box door 21 downward, thereby avoiding the box door 21 from getting stuck and ensuring the automatic closing of the box door 21.

[0033] like Figure 2 and Figure 6 As shown, it also includes a rotating rod 51 that rotates and passes through the detection box 2 and the receiving groove 23. The rotating rod 51 and the receiving groove 23 are mechanically sealed to prevent liquid from leaking out when the rotating rod 51 rotates. The support plate 32 is rotatably arranged on the sliding frame 31. The rotating support plate 32 adjusts the position of the material to facilitate the nozzle tube 22 to spray liquid to different positions of the material for corrosion resistance testing. The lower part of the support plate 32 has a first connecting structure, and the upper part of the rotating rod 51 has a second connecting structure suitable for plugging into the first connecting structure. When the contact plate 42 squeezes the bent portion 311 to enable the sliding frame 31 to drive the support plate 32 to move downward, the first connecting structure on the support plate 32 will be plugged into the second connecting structure on the rotating rod 51. At this time, driving the rotating rod 51 to rotate can drive the material to rotate through the support plate 32 in the receiving groove 23, so as to adjust the position of the material. The rotating rod 51 is driven to rotate by the rotating drive group, and the rotating drive group is arranged on the base 1.

[0034] like Figure 2 and Figure 6As shown, the first connection structure is that the lower part of the support disk 32 is a hollow structure, and the hollow position of the support disk 32 has two resistance parts 321 that are opposite to each other and protrude inwardly, and the resistance parts 321 and the hollow structure constitute the first connection structure of the support disk 32; the upper part of the rotating rod 51 protrudes with a pushing part 511 constituting the second connection structure, and the pushing part 511 is suitable for inserting into the hollow position of the support disk 32 and pushing the resistance part 321. When the rotating rod 51 rotates, the pushing part 511 pushes the resistance part 321 to drive the material on the support disk 32 to rotate, and when the support disk 32 moves upward, the resistance part 321 is driven to gradually move away from the pushing part 511. When the support disk 32 moves downward, the hollow structure is inserted into the pushing part 511 of the rotating rod 51. At this time, the rotating rod 51 continues to rotate, which causes the pushing part 511 to push the resistance part 321 to drive the material on the support disk 32 to rotate.

[0035] like Figure 2 As shown, the rotation drive group includes a bevel gear 1 connected to the lower part of the rotating rod 51, and a rotating shaft 52 located between all the rotating rods 51 rotates on the base 1. The rotating shaft 52 is connected to the same number of bevel gears as the bevel gear 1. The bevel gears 2 are meshed with the bevel gears 1 in a one-to-one correspondence. The bevel gears 2 are driven by the rotating shaft 52 to rotate and mesh with the bevel gear 1. The bevel gear 1 will drive the pushing part 511 on the rotating rod 51 to rotate, thereby synchronously driving all the supporting plates 32 to drive the material to rotate. A servo motor 53 is installed on the base 1, and the output shaft of the servo motor 53 is connected to the rotating shaft 52. The servo motor 53 is controlled to drive the rotating shaft 52 to drive all the bevel gears 2 to rotate.

[0036] like Figure 1 , Figure 3 and Figure 7 As shown, it also includes an air purification system 6 for purifying the air in the test box 2. The air purification system 6 includes an exhaust group 61 arranged on the box door 21. The exhaust group 61 is suitable for sucking the corrosive gas in the test box 2 to a specific processing equipment for purification and then discharging it, so as to avoid the influence of a large amount of gas discharge on the working environment when the box door 21 is opened. A sealing group 62 is provided between the exhaust group 61 and the box door 21. The sealing group 62 controls the exhaust group 61 to be connected and separated from the inside of the test box 2. When performing corrosion resistance testing, the sealing group 62 is controlled to separate the exhaust group 61 from the inside of the test box 2, so as to block the discharge of air, thereby avoiding the influence of air circulation on the result of corrosion resistance testing, and vice versa.

[0037] like Figure 7 As shown, the exhaust group 61 includes an exhaust hood 611 connected to the front side of the box door 21. One side of the exhaust hood 611 is connected to a telescopic tube 612 for an external suction device. The telescopic tube 612 enables the exhaust hood 611 to extract the corrosive gas in the detection box 2. When the box door 21 moves up and opens, it will drive the exhaust hood 611 to move up, and the telescopic tube 612 will deform adaptively.

[0038] like Figure 7-10 As shown, the sealing group 62 includes a bracket 621 connected between the exhaust hood 611 and the box door 21, the bracket 621 is located inside the exhaust hood 611, and a plurality of circumferentially evenly arranged baffles 622 are rotated between the bracket 621 and the exhaust hood 611. The baffles 622 are fan-shaped, and two adjacent baffles 622 are tightly fitted. At this time, the baffles 622 are in a closed state, and one end of the baffle 622 close to the exhaust hood 611 is connected to a resistance frame 623, and the baffle 622 is driven to rotate by the resistance frame 623 to control the opening and closing of the baffle 622. When the two adjacent baffles 622 are away from each other, the baffle 622 is in an open state, and the air in the detection box 2 can pass through the exhaust hood 61 1 discharge, a rotating ring 624 is rotated on the exhaust hood 611, and the rotating ring 624 is connected with the same number of resistance rods 625 as the resistance frame 623, and the resistance rods 625 are movable and corresponding to each other and penetrate the resistance frame 623; initially, the resistance rods 625 are in resistance to one side of the inner circle of the resistance frame 623, and the baffle 622 is in a closed state at this time, and the rotating ring 624 is rotated to drive the resistance rod 625 to rotate clockwise, and the resistance rod 625 will squeeze the other side of the inner circle of the resistance frame 623, so as to push the resistance frame 623 to drive the baffle 622 to rotate, so as to synchronously open all the baffles 622 for ventilation operation after corrosion resistance detection, and the rotating ring 624 can be rotated in the opposite direction to synchronously close all the baffles 622.

[0039] like Figure 8 and Fig. 9 As shown, the exhaust hood 611 is circular in shape, the outer side of the baffle 622 and the inner side of the exhaust hood 611 are tightly fitted in a ring surface contact manner, the middle part of the bracket 621 is a polygonal part 6211, and the baffle 622 is rotatably arranged on the polygonal part 6211 of the bracket 621, the number of sides of the polygonal part 6211 is the same as the number of the baffles 622 and corresponds one-to-one to the baffles 622, and the inner side of the baffle 622 and the side of the polygonal part 6211 are tightly fitted in a plane contact manner, thereby ensuring the sealing effect of the baffle 622.

[0040] like Figure 7 and Fig.10The cam 72 is pressed against the bottom surface of the cam 624 to release the spring 73, and the cam 72 is pressed against the bottom surface of the cam 624 to release the spring 73. 2 does not contact with the stopper 211, the box door 21 is still in the closed state. After the ventilation is completed, the contact plate 42 continues to move up to contact with the stopper 211. At this time, the contact plate 42 no longer continues to squeeze the contact column 74 to drive the rotating ring 624 to rotate. The contact plate 42 will drive the box door 21 to move up through the stopper 211, thereby opening the box door 21 for taking and placing materials. The various steps of material removal, ventilation opening and box door 21 opening are interrelated and coordinated with each other; when the contact plate 42 moves down and resets, when the box door 21 is reset and closed, the contact plate 42 moves down to disengage from the stopper 211 and gradually loosen the contact column 74, and the pull plate 72 will drive the rotating ring 624 to rotate in the opposite direction under the action of the tension spring 73 to reset to automatically close the baffle 622; the lower part of the contact column 74 is rotated with a roller, and the roller replaces the contact column 74 to contact and cooperate with the contact plate 42, thereby reducing friction and improving fluidity.

[0041] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0042] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A corrosion resistance testing device for composite materials for aerospace, characterized in that: The invention comprises a base (1) and a detection box (2) connected to the base (1) and having a plurality of built-in temperature control systems; a box door (21) is slidably provided at the opening of the detection box (2); a nozzle tube (22) is provided on the detection box (2); a receiving groove (23) is provided at the inner bottom of the detection box (2); an injection pipe (231) and a discharge pipe (232) are respectively connected to the upper and lower parts of the receiving groove (23); a sliding frame (31) is slidably passed through the detection box (2); a support tube (231) is provided at the lower part of the sliding frame (31) and is located in the receiving groove (23); The supporting plate (32) is provided with a sliding frame (31) having a bent portion (311) located outside the detection box (2); a mounting plate (33) is connected to the detection box (2); a compression spring (34) is connected between the sliding frame (31) and the mounting plate (33); a lifting cylinder (41) is installed on the base (1); a telescopic rod of the lifting cylinder (41) is connected to a contact plate (42) suitable for squeezing the upper side of the bent portion (311); and a stopper (211) located above the contact plate (42) is connected to one side of the box door (21); It also includes a rotating rod (51) rotating between the detection box (2) and the accommodating groove (23); the supporting plate (32) is rotatably arranged on the sliding frame (31); the lower part of the supporting plate (32) has a first connecting structure; the upper part of the rotating rod (51) has a second connecting structure suitable for plugging into the first connecting structure; the rotating rod (51) is driven to rotate by a rotating drive group; and the rotating drive group is arranged on the base (1).

2. The aerospace composite material corrosion resistance detection device according to claim 1, characterized in that: The first connection structure is that the lower part of the support plate (32) is a hollow structure, and the hollow position of the support plate (32) has a resistance portion (321), and the resistance portion (321) and the hollow structure constitute the first connection structure of the support plate (32); the upper part of the rotating rod (51) protrudes with a pushing portion (511) constituting the second connection structure, and the pushing portion (511) is suitable for being inserted into the hollow position of the support plate (32) and pushing the resistance portion (321).

3. The aerospace composite material corrosion resistance detection device according to claim 2, characterized in that: The rotary drive group comprises a bevel gear 1 connected to the lower part of the rotating rod (51); a rotating shaft (52) is rotatably provided on the base (1); bevel gears 2 of the same number as the bevel gear 1 are connected to the rotating shaft (52); the bevel gears 2 are meshed with the bevel gears 1 in a one-to-one correspondence; a servo motor (53) is mounted on the base (1); an output shaft of the servo motor (53) is connected to the rotating shaft (52).

4. The aerospace composite material corrosion resistance detection device according to claim 1, characterized in that: The invention also comprises an air purification system (6), wherein the air purification system (6) comprises an exhaust group (61) arranged on the box door (21), a sealing group (62) being arranged between the exhaust group (61) and the box door (21), and the sealing group (62) controlling the communication and separation between the exhaust group (61) and the interior of the detection box (2).

5. The aerospace composite material corrosion resistance detection device according to claim 4, characterized in that: The exhaust group (61) comprises an exhaust hood (611) connected to the box door (21), and one side of the exhaust hood (611) is connected to a telescopic tube (612).

6. The aerospace composite material corrosion resistance detection device according to claim 5, characterized in that: The sealing group (62) comprises a bracket (621) connected between the exhaust hood (611) and the chamber door (21); a plurality of circumferentially evenly arranged baffle blades (622) are rotatable between the bracket (621) and the exhaust hood (611); two adjacent baffle blades (622) are tightly fitted together; one end of the baffle blade (622) close to the exhaust hood (611) is connected to a resistance frame (623); a rotating ring (624) is rotatable on the exhaust hood (611); the rotating ring (624) is connected to the same number of resistance rods (625) as the resistance frames (623); the resistance rods (625) are movably connected to and penetrate the resistance frames (623) in a one-to-one correspondence.

7. The aerospace composite material corrosion resistance detection device according to claim 6, characterized in that: The baffle blade (622) is tightly fitted with the exhaust cover (611); the middle portion of the bracket (621) is a polygonal portion (6211); the baffle blade (622) is rotatably arranged on the polygonal portion (6211) of the bracket (621); the number of sides of the polygonal portion (6211) is the same as the number of the baffle blades (622) and corresponds one-to-one to the baffle blades (622); and the baffle blade (622) is tightly fitted with the side edge of the polygonal portion (6211).

8. The aerospace composite material corrosion resistance detection device according to claim 6, characterized in that: It also includes a connecting plate (71) and a pulling plate (72) respectively connected to one side of the exhaust cover (611) and one side of the rotating ring (624); a tension spring (73) is connected between the pulling plate (72) and the connecting plate (71); a resistance column (74) is connected to the lower part of the rotating ring (624); the lowest position of the resistance column (74) is lower than the lowest position of the stopper 1 (211).

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