Composite salt mist and damp-heat alternating environment simulation test box

Abstract

The invention discloses a composite salt mist and damp-heat alternating environment simulation test box, and relates to the technical field of environment test equipment, the composite salt mist and damp-heat alternating environment simulation test box comprises a test box body and a clamping turnover unit, the test box body comprises a side plate and a rear plate, and the side plate and the rear plate are sequentially divided into a top control system layer, a middle test working layer and a bottom function module layer from top to bottom; the clamping and overturning unit comprises a first fixing frame, the first fixing frame is fixedly connected to the rear side of the rear plate, and a gear is rotationally arranged in the middle of the front side of the first fixing frame. By means of transmission linkage of the telescopic air cylinder, the gear and the rack and cooperation of double-layer guide limiting linkage of the second fixing piece, the first sliding protruding block and the first sliding groove and double-layer guide limiting linkage of the second sliding groove and the second sliding protruding block, automatic and precise position adjustment of the clamping assembly is achieved; through the polytetrafluoroethylene coating and the fluorocarbon coating, the test working layer is highly sealed, and salt mist and humid and hot gas are effectively prevented from leaking.

Description

Technical Field

[0001] This invention relates to the field of environmental testing equipment technology, and in particular to a composite salt spray and humid heat alternating environment simulation test chamber. Background Technology

[0002] Composite salt spray and humid heat alternating environment simulation test is a core test type in the field of environmental testing equipment technology for detecting the weather resistance and corrosion resistance of products. The combination of the two can simulate complex natural environments such as ocean, coastal high humidity and high salinity, and outdoor temperature and humidity alternation. The test results directly determine the reliability and service life of products in actual complex environments. This type of test equipment is widely used in many technical fields such as aerospace, rail transportation, automobile manufacturing, marine engineering, hardware and electronics, and new energy. It can conduct environmental adaptability testing on various products and parts such as metal components, coating materials, electronic components, and mechanical equipment, providing scientific test data support for product structure optimization, material selection, and quality control. It is an indispensable key testing equipment in the research and development, production, and quality inspection of industrial products.

[0003] Currently available composite salt spray and humid heat alternating environment simulation test chambers still suffer from several drawbacks in practical use. The clamping and flipping structure of the test samples is often poorly designed, relying heavily on manual adjustment or a single self-rotation mechanism. This lack of automated position adjustment and multi-angle flipping linkage mechanisms leads to uneven contact between the sample surfaces and salt spray and humid heat gases, and a limited testing angle, affecting the comprehensiveness and accuracy of the test results. Furthermore, the transmission and guiding structures of the clamping and flipping components are inadequate. Gear and rack meshing can easily cause misalignment and jamming, and the coaxiality of the clamping frame movement is difficult to guarantee. This not only reduces the efficiency and accuracy of sample clamping but also easily causes wear on transmission components, shortening the equipment's lifespan. The sealing and corrosion protection of the test chamber are also inadequate. The sealing structure is often a single rubber seal, which is prone to leakage of salt spray and humid heat gases due to component wear. Moreover, the inner wall of the chamber is often only treated with a single layer of anti-corrosion material, making it susceptible to corrosion and scaling under long-term salt spray and humid heat alternating environments. This affects the stability of the test environment parameters and increases equipment maintenance costs. Therefore, a composite salt spray and humid heat alternating environment simulation test chamber is needed to address these problems. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a composite salt spray and humid heat alternating environment simulation test chamber, comprising a test chamber body and a clamping and flipping unit, wherein the test chamber body comprises a side plate and a rear plate, wherein the side plate and the rear plate are divided into a top control system layer, a middle test working layer and a bottom functional module layer from top to bottom, and both the side plate and the rear plate are provided with inclined surfaces at the middle test working layer; The clamping and flipping unit includes a first fixing frame, which is fixedly connected to the rear side of the rear plate. A gear is rotatably arranged in the middle of the front side of the first fixing frame, and racks are meshed on both the upper and lower parts of the gear. A telescopic cylinder is fixedly arranged in the middle of the rear side of the first fixing frame. The telescopic end of the telescopic cylinder is located on the right side, and a fixing sleeve is sleeved on the outside of the telescopic end. A connecting rod is welded to the bottom of the fixing sleeve. A first fixing member is welded to the front side of the connecting rod, and the upper part of the first fixing member is fixedly connected to the bottom end of the bottom gear. Both the upper gear and the bottom gear have a locking fastener fixedly installed on one side of their outer sides. The front side of the locking fastener is bolted to a second fixing bracket, and the front end of the second fixing bracket is bolted to a third fixing bracket. The front side of each of the third fixing frames is fixedly connected to a fourth fixing frame by bolts. A drive motor is fixedly connected to the outer side of each of the fourth fixing frames. A rotating rod is provided in the middle of each of the fourth fixing frames. The rotating shaft of each drive motor is fixedly connected to the outer end of the corresponding rotating rod.

[0005] Preferably, each of the left and right side plates has an opening in the middle, and a sealing sleeve is provided inside each opening. The rotating rod extends and retracts to rotate inside the corresponding sealing sleeve. Each of the rotating rods has a threaded post at its inner end, and a rubber clamping head is threaded to the outer side of each threaded post.

[0006] Preferably, two rotating components are provided on the outer sides of the two rotating rods on the left and right sides. A fixing tube is provided on the inner side of each rotating component. The fixing tube is sleeved on the outer side of the corresponding rotating rod and fixed with bolts. A rotating groove is provided on the outer side of each rotating component. The rotating groove is respectively engaged and rotatably connected to the middle of the corresponding fourth fixing frame.

[0007] Preferably, welding frames are welded to the upper and lower parts of the side plate and the rear plate, an upper plate is welded to the bottom of the upper welding frame, and a bottom plate is welded to the upper part of the bottom welding frame. The connection between the side plate, the rear plate, the bottom plate and the upper plate is made using a seamless welding process. The test chamber has a door that rotates at the front center, a glass observation window in the center of the door, and a sealing gasket on the inner side of the door.

[0008] Preferably, the upper and lower ends of the side plate are provided with slots, and the outer sides of the slots are provided with flaps that are rotatably mounted by hinges.

[0009] Preferably, the bottom rear side of the second fixing frame is fixedly connected with a second sliding groove by bolts, and the left and right ends of the bottom front side of the first fixing frame are fixedly connected with second sliding protrusions by bolts, and the rear part of the second sliding groove is slidably connected to the front side of the corresponding second sliding protrusion.

[0010] Preferably, the central test working layer formed by the door, side panel, rear panel, bottom panel and top panel is provided with a polytetrafluoroethylene coating and a fluorocarbon coating from the inside to the outside. The polytetrafluoroethylene coating is used for salt spray corrosion prevention and anti-sticking, and the fluorocarbon coating is used for weather protection and structural corrosion protection.

[0011] Preferably, a front plate is welded to the front side of each welding frame, and an outer plate is welded to the upper end of the upper welding frame and the lower end of the lower welding frame. The upper plate described above has several spray head mounting holes evenly spaced. A water collection trough is provided at the upper end of the bottom plate, and a drain hole is provided at the center of the water collection trough.

[0012] Preferably, the front side of the first fixing frame is located at the two racks, each of which is fixedly connected to a second fixing member by bolts. The front end of each of the second fixing members is provided with a first sliding protrusion. The first sliding protrusions of the two racks are respectively engaged and slidably connected to the inner side of the corresponding first sliding groove.

[0013] In summary, the present invention provides a composite salt spray and humid heat alternating environment simulation test chamber, which has the following beneficial effects: 1. Through the transmission linkage of telescopic cylinder, gear, and rack, and in conjunction with the double-layer guide and limiting linkage of the second fixing component, first sliding protrusion, first sliding groove, second sliding groove, and second sliding protrusion, the automated and precise position adjustment of the clamping component is achieved. That is, the linear power of the telescopic cylinder is converted into the moving power of the clamping component through the meshing transmission of the gear and rack, ensuring the high efficiency of adjustment. The double-layer sliding guide structure effectively prevents rack offset and frame tilting, avoiding gear meshing failure. At the same time, the rigid connection linkage of the locking fixing component, second fixing frame, third fixing frame, and fourth fixing frame ensures the stability of power transmission and the coaxiality of frame movement, greatly improving the efficiency and accuracy of sample clamping, and realizing the automated control of the adjustment process.

[0014] 2. By linking the drive motor, rotating rod, and rotating assembly with the position adjustment structure of the clamping component, 360° rotation and self-rotation of the test sample without dead angles are achieved. The drive motor directly drives the rotating rod to rotate, and the fixed tube and rotating groove of the rotating assembly provide bidirectional support for the rotating rod, preventing the rotating rod from wobbling or deviating and ensuring the stability of the sample's self-rotation. At the same time, the gear and rack transmission driven by the telescopic cylinder can drive the overall fine adjustment of the clamping assembly, forming a linkage with the sample's self-rotation. This allows all surfaces of the sample to fully contact the test environment, avoiding the technical problems of uneven fogging of the test sample and a single test angle, and greatly improving the comprehensiveness and accuracy of the test results.

[0015] 3. Through the coordinated sealing structure of each component of the test chamber, including the flexible sealing of the gaskets and sleeves, and the rigid sealing formed by seamless welding of the side plates, rear plates, bottom plates, and top plates, a double sealing linkage is achieved. Simultaneously, the double-layer anti-corrosion protection of the PTFE coating and fluorocarbon coating is coordinated, achieving a high degree of airtightness in the test working layer, effectively preventing leakage of salt spray and humid heat gases, and ensuring the stability of test environmental parameters. Furthermore, through the synergistic protection of the double coatings, the PTFE coating provides protection against salt spray corrosion and adhesion, while the fluorocarbon coating enhances weather resistance and structural corrosion resistance, forming comprehensive protection for the inner wall of the chamber. This avoids poor sealing performance and easy corrosion of the chamber by salt spray, extending the service life of the equipment. Moreover, the integrated design of the sealing and anti-corrosion structures improves the overall reliability of the equipment.

[0016] 4. By linking the inclined surfaces, water collection tank, and drain holes to guide, collect, and discharge the salt spray, and coordinating with the uniform mist distribution structure of the spray head mounting holes, the uniformity and cleanliness of the salt spray environment within the test chamber are achieved. The equidistantly distributed spray head mounting holes ensure that the salt spray is evenly sprayed from the top, maintaining a consistent salt spray concentration in the test environment. The inclined surfaces of the side and rear plates guide the condensed salt spray droplets to flow in a directional manner, forming a linkage with the water collection tank and drain holes to guide, collect, and discharge the liquid quickly, preventing the accumulation of liquid from affecting parameters such as temperature, humidity, and salt spray concentration in the test environment. At the same time, combined with the anti-stick effect of the PTFE coating, it prevents droplets and impurities from adhering to the inner wall of the chamber, ensuring the cleanliness of the chamber interior. This avoids the technical problems of uneven salt spray distribution and difficulty in draining accumulated liquid in test chambers, significantly improving the stability of the test environment and the accuracy of the test results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention; Figure 2 This is a schematic diagram of the rear structure of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention; Figure 3 This is a schematic diagram of the clamping and flipping unit of a composite salt spray and humid heat alternating environment simulation test chamber of the present invention; Figure 4 This is a schematic diagram of the clamping and flipping unit of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention. Figure 5 This is a schematic diagram of the clamping and flipping unit of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention. Figure 6 This is a schematic diagram of the damp heat clamping and flipping unit of a composite salt spray and damp heat alternating environment simulation test chamber of the present invention. Figure 7 This is a schematic diagram of the exploded structure of the test chamber of the composite salt spray and humid heat alternating environment simulation test chamber of the present invention; Figure 8 This is a schematic diagram of the bottom plate and top plate structure of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention; Figure 9 This is a schematic diagram of the polytetrafluoroethylene coating and fluorocarbon coating structure of a composite salt spray and humid heat alternating environment simulation test chamber of the present invention. Figure 10 This is a schematic diagram of the door structure of a composite salt spray and humid heat alternating environment simulation test chamber according to the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Test chamber body; 101. Side plate; 102. Rear plate; 103. Welding frame; 104. Outer plate; 105. Front plate; 106. Bottom plate; 107. Top plate; 108. Water collection tank; 109. Drain hole; 110. Spray head mounting hole; 111. Groove; 112. Opening; 113. Inclined surface; 2. Clamping and flipping unit; 201. First fixing frame; 202. Gear; 203. Rack; 204. Telescopic cylinder; 205. Fixing sleeve; 206. Connecting rod; 207. First fixing component; 208. Snap-fit ​​fixing component; 20 9. Second fixed frame; 210. Third fixed frame; 211. Fourth fixed frame; 212. Drive motor; 213. Rotating rod; 3. Box door; 301. Glass observation window; 302. Sealing gasket; 4. Polytetrafluoroethylene coating; 5. Fluorocarbon coating; 6. Sealing sleeve; 7. Flip plate; 8. Threaded post; 9. Rubber clamp head; 10. Rotating assembly; 1001. Fixed sleeve; 1002. Rotating groove; 11. Second fixed component; 1101. First sliding protrusion; 12. First sliding groove; 13. Second sliding groove; 14. Second sliding protrusion. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 -Appendix Figure 10 This application will be described in further detail below.

[0020] Example: Please see Figures 1-10 As shown, the present invention provides a technical solution: a composite salt spray and humid heat alternating environment simulation test chamber, including a test chamber body 1 and a clamping and flipping unit 2. The test chamber body 1 includes a side plate 101 and a rear plate 102. The side plate 101 and the rear plate 102 are divided into a top control system layer, a middle test working layer and a bottom functional module layer from top to bottom. The side plate 101 and the rear plate 102 are both provided with inclined surfaces 113 at the middle test working layer. The layered design realizes the partitioned operation of test control, environmental simulation and functional support, improves the professionalism and orderliness of equipment operation, and the inclined surfaces 113 can guide the salt spray condensate droplets to flow downward, avoid liquid accumulation in the cavity, and ensure the stability of test environment parameters. The clamping and flipping unit 2 includes a first fixed frame 201, which is fixedly connected to the rear side of the rear plate 102. A gear 202 is rotatably arranged in the middle of the front side of the first fixed frame 201. A rack 203 is meshed on both the upper and lower parts of the gear 202. A telescopic cylinder 204 is fixedly arranged in the middle of the rear side of the first fixed frame 201. The telescopic end of the telescopic cylinder 204 is located on the right side, and a fixed sleeve 205 is sleeved on the outside of the telescopic end. A connecting rod 206 is welded to the bottom of the fixed sleeve 205. A first fixing member 207 is welded to the front side of the connecting rod 206. The upper part of the first fixing member 207 is fixedly connected to the bottom end of the bottom gear 202. The gear 202 and the rack 203 are meshed and transmitted through the telescopic cylinder 204 to realize the automatic position adjustment of the clamping component. The fixed sleeve 205 protects the telescopic end of the telescopic cylinder 204. The connecting rod 206 and the first fixing member 207 ensure the stability of power transmission and improve the accuracy and smoothness of adjustment. Both the upper gear 202 and the bottom gear 202 have a locking fastener 208 fixedly installed on one side of their outer sides. The front side of the locking fastener 208 is bolted to a second fixing frame 209. The front end of the second fixing frame 209 is bolted to a third fixing frame 210. The locking fastener 208 achieves a firm connection between the gear 202 and the subsequent frame. The bolted connection method makes it easy to disassemble and assemble the second fixing frame 209 and the third fixing frame 210, which facilitates equipment maintenance and component replacement, while ensuring the structural strength of the frame connection. The front side of the third fixing frame 210 is fixedly connected to the fourth fixing frame 211 by bolts. The outer side of the fourth fixing frame 211 is fixedly connected to the drive motor 212. The middle of the fourth fixing frame 211 is provided with a rotating rod 213. The rotating shaft of the drive motor 212 is fixedly connected to the outer end of the corresponding rotating rod 213. The fourth fixing frame 211 provides stable installation support for the drive motor 212 and the rotating rod 213. The drive motor 212 directly drives the rotating rod 213 to rotate, with low power transmission loss, realizing efficient self-rotation of the test sample and meeting the requirements of multi-angle testing.

[0021] Both the left and right side plates 101 have openings 112 in the middle, and sealing sleeves 6 are installed inside the openings 112. The rotating rods 213 extend and retract and rotate inside the corresponding sealing sleeves 6. The openings 112 provide space for the rotating rods 213 to pass through. The sealing sleeves 6 achieve the seal between the rotating rods 213 and the side plates 101, preventing the leakage of salt spray and humid heat gas in the test chamber and ensuring the airtightness of the test environment. The inner end of the rotating rod 213 is provided with a threaded post 8, and the outer side of the threaded post 8 is threaded with a rubber clamping head 9. The threaded connection between the threaded post 8 and the rubber clamping head 9 can adjust the clamping distance to adapt to test samples of different specifications and sizes, thereby improving the versatility of the equipment. The rubber clamping head 9 is elastic, which can avoid damage to the sample during clamping and at the same time improve the firmness of sample clamping.

[0022] Two rotating components 10 are provided on the outer sides of the two rotating rods 213 on the left and right sides. A fixing tube 1001 is provided on the inner side of each rotating component 10. The fixing tube 1001 is sleeved on the outer side of the corresponding rotating rod 213 and fixed with bolts. A rotating groove 1002 is provided on the outer side of each rotating component 10. The rotating groove 1002 is respectively engaged and rotatably connected to the middle of the corresponding fourth fixing frame 211. The fixing tube 1001 realizes the firm fixation of the rotating component 10 and the rotating rod 213. The engaging and rotating structure of the rotating groove 1002 and the fourth fixing frame 211 provides bidirectional support for the rotation of the rotating rod 213, preventing the rotating rod 213 from shaking or deviating, and ensuring its rotational stability and coaxiality.

[0023] Welding frames 103 are welded to the upper and lower parts of the side plate 101 and the rear plate 102. An upper plate 107 is welded to the bottom of the upper welding frame 103, and a bottom plate 106 is welded to the upper part of the bottom welding frame 103. The connection between the side plate 101, the rear plate 102, the bottom plate 106 and the upper plate 107 is made of seamless welding. The welding frame 103 provides a solid installation support for the upper plate 107 and the bottom plate 106, which improves the overall structural strength of the test chamber 1. The seamless welding process effectively enhances the sealing of the test working layer, prevents gas leakage, and improves the corrosion resistance and pressure resistance of the chamber. The test chamber 1 has a rotating door 3 at the front center. The door 3 has a glass observation window 301 in the middle and a sealing gasket 302 on the inner side of the door 3. The door 3 facilitates the loading and unloading of test samples. The glass observation window 301 allows for real-time observation of the sample status during the test without opening the door 3, thus avoiding damage to the test environment. The sealing gasket 302 further enhances the sealing effect between the door 3 and the chamber, ensuring the stability of the test environment.

[0024] The upper and lower ends of the side panel 101 are provided with slots 111. The outer side of the slots 111 is provided with flaps 7 by hinges. The slots 111 provide ventilation and heat dissipation channels for the test chamber 1. The flaps 7 can be opened and closed flexibly. After the test, opening the flaps 7 can realize rapid ventilation and heat dissipation of the test working layer, and at the same time facilitate the staff to clean, maintain and repair the inside of the chamber.

[0025] The second fixed frame 209 has a second sliding groove 13 fixedly connected to the bottom rear side by bolts. The first fixed frame 201 has a second sliding protrusion 14 fixedly connected to the bottom front side by bolts on both the left and right ends. The rear part of the second sliding groove 13 is slidably connected to the front side of the corresponding second sliding protrusion 14. The sliding cooperation between the second sliding groove 13 and the second sliding protrusion 14 provides guidance and limit for the movement of the clamping component, prevents the frame from shifting or tilting when moving, and ensures the overall stability of the clamping component's movement. At the same time, the bolt connection facilitates the disassembly and maintenance of the components.

[0026] The central test working layer, enclosed by the door 3, side panel 101, rear panel 102, bottom panel 106, and top panel 107, is sequentially coated with a polytetrafluoroethylene (PTFE) coating 4 and a fluorocarbon coating 5 from the inside out. The PTFE coating 4 is used for salt spray corrosion prevention and anti-sticking, while the fluorocarbon coating 5 is used for weather protection and structural corrosion protection. The double coating forms double protection. The PTFE coating 4 can effectively resist salt spray corrosion and prevent salt spray and impurities from adhering to the inner wall of the cavity. The fluorocarbon coating 5 further enhances the weather resistance and structural corrosion protection of the cavity, extends the service life of the test chamber 1, and keeps the inner wall of the cavity clean for easy cleaning.

[0027] Front plates 105 are welded to the front side of the welding frame 103. Outer plates 104 are welded to the upper end of the upper welding frame 103 and the lower end of the lower welding frame 103. The front plates 105 and the outer plates 104 protect the external structure of the welding frame 103 and the test chamber 1, improve the overall sealing and structural strength of the chamber, and effectively prevent external dust and moisture from entering the equipment, ensuring the normal operation of the internal components. The upper plate 107 has several spray head mounting holes 110 evenly spaced. The evenly spaced spray head mounting holes 110 facilitate the uniform installation of the spray heads, so that the salt spray can be evenly sprayed in from the top of the test working layer, ensuring the uniformity of salt spray distribution in the test chamber and improving the accuracy of the test results. A water collection tank 108 is provided at the upper end of the lower base plate 106. A drain hole 109 is provided at the center of the water collection tank 108. The water collection tank 108 can collect the salt spray droplets condensed in the cavity. The drain hole 109 enables the rapid discharge of the collected liquid, avoiding the accumulation of salt spray liquid in the test chamber and preventing the accumulated liquid from affecting the temperature, humidity, salt spray concentration and other parameters of the test environment, thus ensuring the smooth progress of the test.

[0028] The front side of the first fixing bracket 201 is located at the two racks 203, and each rack is fixedly connected to a second fixing member 11 by bolts. The front end of each second fixing member 11 is provided with a first sliding protrusion 1101. The front side of each rack 203 is provided with a first sliding groove 12. The first sliding protrusion 1101 is respectively engaged and slid inside the corresponding first sliding groove 12. The second fixing member 11 provides installation support for the first sliding protrusion 1101. The engagement and sliding of the first sliding protrusion 1101 and the first sliding groove 12 provides precise guidance and limit for the linear movement of the rack 203, preventing the rack 203 from deviating during movement and causing gear meshing failure, ensuring the smoothness and accuracy of the transmission between the gear 202 and the rack 203. The bolt connection facilitates the disassembly and replacement of the components.

[0029] The implementation principle of this application embodiment is as follows: First, open the door 3 of the test chamber 1 and start the telescopic cylinder 204 of the clamping and flipping unit 2. Its telescopic end drives the connecting rod 206 and the first fixing member 207 to move through the fixing sleeve 205, thereby pushing the bottom gear 202 to rotate. The gear 202 is driven by the upper and lower meshing rack 203, which drives the upper gear 202 to rotate synchronously. The two gears 202 drive the second fixing frame 209, the third fixing frame 210, and the fourth fixing frame 211 to move outward as a whole through the locking fixing member 208, so that the rotating rods 213 on both sides move away from each other. At the same time, when the rack 203 moves, the second fixing member 11 on the first fixing frame 201 slides in the first sliding groove 12 of the rack 203 through the first sliding protrusion 1101, which guides and limits the linear movement of the rack 203. The second fixing frame 209 also slides on the second sliding protrusion 14 of the first fixing frame 201 through the second sliding groove 13, which provides secondary guidance for the movement of the clamping assembly and ensures the coaxiality of the rotating rod 213. Then, the test sample is placed between the rubber clamping heads 9 at the ends of the rotating rods 213 on both sides, and the telescopic cylinder 204 is controlled to move in the opposite direction, driving the rotating rods 213 on both sides to move inward. The sample is elastically clamped by the rubber clamping heads 9. The threaded connection between the threaded post 8 and the rubber clamping head 9 can be used to adapt to test samples of different specifications, improving the versatility of clamping. Next, close the chamber door 3. Through the sealing gasket 302 on the inner side of the chamber door 3 and the test chamber 1, and the sealing effect of the sealing sleeve 6 inside the opening 112 of the side plate 101 on the rotating rod 213, the middle test working layer is completely sealed to prevent the leakage of salt spray and humid heat gas and ensure the stability of the test environment. Subsequently, the salt spray and damp heat alternating test program is started through the top control system layer of the test chamber 1. The salt spray is sprayed into the test working layer through the spray head mounting hole 110 of the upper plate 107, and the damp heat gas is filled in simultaneously. The polytetrafluoroethylene coating 4 set from the inside to the outside of the inner wall of the test working layer achieves the effect of preventing salt spray corrosion and sticking. The fluorocarbon coating 5 achieves weather protection and structural corrosion protection, avoiding the inner wall of the chamber from being eroded by the test environment. Simultaneously, the drive motor 212 on the outer side of the fourth fixing frame 211 is started, and its rotating shaft drives the rotating rod 213 to rotate, thereby driving the clamped sample to rotate synchronously. The rotating kit 10 on the outer side of the rotating rod 213 is fixed to the rotating rod 213 through the fixing tube 1001, and the rotating groove 1002 of the rotating kit 10 engages with the fourth fixing frame 211 to rotate, providing stable support for the rotation of the rotating rod 213 and preventing the rotating rod 213 from shaking or deviating. If it is necessary to achieve multi-angle flipping of the sample, the telescopic cylinder 204 can be activated again. Through the meshing transmission of gear 202 and rack 203, the clamping components on both sides are driven to make fine adjustments up and down and left and right. Combined with the sample rotation driven by the drive motor 212, the sample can be flipped 360° without dead angles, so that all surfaces of the sample can fully contact the salt spray and humid heat gas, ensuring the uniformity of the test. During the test, the salt spray condenses into droplets on the inner wall of the test working layer. These droplets are guided downwards by the inclined surfaces 113 of the side plate 101 and the rear plate 102 located in the middle of the test working layer. They eventually collect in the water collection tank 108 of the bottom plate 106 and are discharged from the test chamber 1 through the drain hole 109 in the center of the water collection tank 108. This prevents the salt spray from accumulating in the cavity and affecting the stability of the test environment parameters. Staff can observe the test status of the sample in real time through the glass observation window 301 in the middle of the chamber door 3 without opening the chamber door 3, thus preventing damage to the test environment. After the test, the test program is closed, the chamber door 3 is opened and the sample is taken out. At the same time, the flaps 7 on the outside of the slots 111 at the top and bottom of the side panel 101 can be opened to achieve rapid ventilation and heat dissipation of the test working layer, and also facilitate cleaning and maintenance of the cavity. The side panel 101 and rear panel 102 of the test chamber 1 are seamlessly welded to the upper panel 107 and bottom panel 106 through the welding frame 103. Together with the front panel 105 on the front side of the welding frame 103 and the outer panels 104 at the top and bottom, a stable external support structure is formed, which improves the overall structural strength of the test chamber 1 and ensures the long-term stable operation of the equipment.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A composite salt spray and humid heat alternating environment simulation test chamber, comprising a test chamber body (1) and a clamping and flipping unit (2), characterized in that: The test chamber (1) includes a side plate (101) and a rear plate (102). The side plate (101) and the rear plate (102) are divided into a top control system layer, a middle test working layer and a bottom functional module layer from top to bottom. The side plate (101) and the rear plate (102) are both provided with inclined surfaces (113) at the middle test working layer. The clamping and flipping unit (2) includes a first fixing frame (201), which is fixedly connected to the rear side of the rear plate (102). A gear (202) is rotatably arranged in the middle of the front side of the first fixing frame (201). A rack (203) is meshed in both the upper and lower parts of the gear (202). A telescopic cylinder (204) is fixedly arranged in the middle of the rear side of the first fixing frame (201). The telescopic end of the telescopic cylinder (204) is located on the right side, and a fixing sleeve (205) is sleeved on the outside of the telescopic end. The bottom of the fixing sleeve (205) is welded to the connecting rod (206). A first fixing member (207) is welded to the front side of the connecting rod (206). The upper part of the first fixing member (207) is fixedly connected to the bottom end of the bottom gear (202). Both the upper gear (202) and the bottom gear (202) are fixedly provided with a locking fastener (208) at one end of their outer sides. The front side of the locking fastener (208) is bolted to a second fixing frame (209). The front end of the second fixing frame (209) is fixedly connected to a third fixing frame (210) by bolts. The front side of each of the third fixing brackets (210) is fixedly connected to a fourth fixing bracket (211) by bolts. Each of the fourth fixing brackets (211) is fixedly connected to a drive motor (212) on its outer side. Each of the fourth fixing brackets (211) is provided with a rotating rod (213) in the middle. The rotating shaft of the drive motor (212) is fixedly connected to the outer end of the corresponding rotating rod (213).

2. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: The left and right side plates (101) are provided with openings (112) in the middle, and sealing sleeves (6) are provided inside the openings (112). The rotating rods (213) extend and retract and rotate inside the corresponding sealing sleeves (6). Each of the rotating rods (213) has a threaded post (8) at its inner end, and a rubber clamping head (9) is threaded to the outer side of each threaded post (8).

3. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: Two rotating components (10) are provided on the outer side of each of the two rotating rods (213) on the left and right sides. A fixing tube (1001) is provided on the inner side of each rotating component (10). The fixing tube (1001) is sleeved on the outer side of the corresponding rotating rod (213) and fixed with bolts. A rotating groove (1002) is provided on the outer side of each rotating component (10). The rotating groove (1002) is respectively engaged and rotatably connected to the middle of the corresponding fourth fixing frame (211).

4. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: Welding frames (103) are welded to the upper and lower parts of the side plate (101) and the rear plate (102). An upper plate (107) is welded to the bottom of the upper welding frame (103), and a bottom plate (106) is welded to the upper part of the bottom welding frame (103). The connection between the side plate (101), the rear plate (102), the bottom plate (106) and the upper plate (107) is made of seamless welding. A door (3) is rotatably provided in the middle of the front end of the test chamber (1). A glass observation window (301) is provided in the middle of the door (3), and a sealing gasket (302) is provided on the inner side of the door (3).

5. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: The upper and lower ends of the side plate (101) are provided with slots (111), and the outer side of the slots (111) is provided with flaps (7) by hinge rotation.

6. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: The second fixed frame (209) has a second sliding groove (13) fixedly connected to the bottom of the rear side by bolts. The first fixed frame (201) has a second sliding protrusion (14) fixedly connected to the left and right ends of the bottom front side by bolts. The rear part of the second sliding groove (13) is slidably connected to the front side of the corresponding second sliding protrusion (14).

7. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 4, characterized in that: The central test working layer, which is surrounded by the door (3), side panel (101), rear panel (102), bottom panel (106) and top panel (107), is provided with a polytetrafluoroethylene coating (4) and a fluorocarbon coating (5) from the inside to the outside. The polytetrafluoroethylene coating (4) is used for salt spray corrosion prevention and anti-sticking, and the fluorocarbon coating (5) is used for weather protection and structural corrosion protection.

8. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 4, characterized in that: A front plate (105) is welded to the front side of each of the welding frames (103), and an outer plate (104) is welded to the upper end of the upper welding frame (103) and the lower end of the lower welding frame (103). The upper plate (107) mentioned above has several spray head mounting holes (110) evenly spaced on it. The lower part of the bottom plate (106) is provided with a water collection tank (108) at the upper end, and a drain hole (109) is provided at the center of the water collection tank (108).

9. The composite salt spray and humid heat alternating environment simulation test chamber according to claim 1, characterized in that: The front side of the first fixing frame (201) is located at the two racks (203), and each rack is fixedly connected to a second fixing member (11) by bolts. The front end of the second fixing member (11) is provided with a first sliding protrusion (1101). The front side of the two racks (203) is provided with a first sliding groove (12). The first sliding protrusion (1101) is respectively engaged and slid inside the corresponding first sliding groove (12).

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