Self-weight collecting device of salt spray test chamber

Abstract

The invention discloses a salt spray test chamber self-weight collection device, and belongs to the technical field of salt spray test chambers, the salt spray test chamber self-weight collection device comprises a main body module and a weight expansion module, the main body module comprises a hollow table, the top of the hollow table is provided with a collection cup, the top of the collection cup is movably connected with a top cover, the hollow table is internally provided with a centering assembly, and the hollow table is internally provided with a top cover; the centering assembly makes contact with the outer surface of the collecting cup, the weighing expansion module comprises an electronic weighing disc fixedly connected to the bottom of the hollow table, a lifting assembly is arranged at the top of the top cover, a telescopic corrugated pipe is fixedly connected between a fixing pipe and the top of the top cover, and the bottom end of the telescopic corrugated pipe extends into the collecting cup. The top of the lifting assembly is fixedly connected with a fixed pipe, through the arrangement of an electronic weighing disc, the mass of salt mist in the salt mist test box can be known in real time, the salt mist test box does not need to be opened, and frequent operation of workers is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of salt spray test chambers, and more particularly to a self-weighing and collecting device for a salt spray test chamber. Background Art

[0002] The salt spray corrosion test chamber can assess the ability of materials and their protective layers to resist salt spray corrosion, as well as the process quality comparison of similar protective layers. At the same time, it can assess the ability of certain products to resist salt spray corrosion. This product is suitable for salt spray corrosion tests of parts, electronic components, protective layers of metal materials and industrial products. Salt spray corrosion is used to detect the reliability of corrosion resistance of the tested samples. Salt spray refers to a dispersion system composed of tiny salt droplets in the atmosphere. It is one of the three-proof series of artificial environments. Many corporate products need to simulate the destructiveness of the climate around the ocean to the products, so the salt spray test chamber came into being. Salt spray tests are divided into neutral salt spray and acidic salt spray. The difference lies in the different standards and test methods. They are called NSS and CASS tests respectively. They are the most common test methods in artificial three-proof climates. There is a collection device inside the salt spray test chamber to collect salt spray.

[0003] With respect to the above-mentioned related technologies, during the use of the salt spray test box collecting device, in order to check the amount of collected salt spray, the lid on the salt spray test machine is usually opened, and then the collecting device is picked up to judge the collected amount by naked eyes. This method is relatively cumbersome, and the box lid needs to be opened each time for checking, which is inconvenient to operate. At the same time, the size range and height requirements required to be collected by the salt spray test box collecting device are slightly different, and the existing mobile phone device cannot be adjusted according to such circumstances. Therefore, the present invention proposes a self-weighing collecting device for a salt spray test box. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a self-weight collection device for a salt spray test chamber, which adopts the following technical solutions:

[0005] A self-weighing and collecting device for a salt spray test chamber comprises a main body module and a weighing expansion module, wherein the main body module comprises a hollow table, a collecting cup is arranged on the top of the hollow table, a top cover is movably connected to the top of the collecting cup, a centering component is arranged inside the hollow table, and the centering component contacts the outer surface of the collecting cup, the weighing expansion module comprises an electronic weighing plate fixedly connected to the bottom of the hollow table, a lifting component is arranged on the top of the top cover, a telescopic bellows is fixedly connected between the fixed tube and the top of the top cover, the bottom end of the telescopic bellows extends to the inside of the collecting cup, a fixed tube is fixedly connected to the top of the lifting component, an expansion component is arranged between the outer surface of the fixed tube and the top, and a protective component located outside the lifting component is arranged on the top of the top cover.

[0006] Furthermore, the expansion component includes a plurality of mounting grooves, the top of the inner wall of the fixed tube is conically arranged, and the plurality of mounting grooves are opened in a ring shape at equal distances on the top of the fixed tube, and the interiors of the plurality of mounting grooves are movably connected with guide plates, and a folding plastic guide plate is fixedly connected between every two adjacent folding plastic guide plates.

[0007] By adopting the above technical solution, a plurality of foldable plastic guide plates can cooperate with a plurality of material guide plates to realize opening and closing actions, thereby expanding and reducing the collection range.

[0008] Furthermore, the expansion component also includes a threaded groove opened on the outer surface of the fixed tube, the outer surface of the threaded groove is threadedly connected to a set plate, the top of the set plate is rotatably connected to a lifting ring, the outer surface of the lifting ring is hinged with multiple connecting arms, and one end of the multiple connecting arms is respectively hinged to the outer surfaces of multiple guide plates.

[0009] By adopting the above technical solution, the opening and closing of the foldable plastic guide plate and the plurality of material guide plates can be adjusted by rotating the set plate.

[0010] Furthermore, the lifting assembly includes a plurality of sleeve tubes rotatably connected to the top of the top cover, the interiors of the plurality of sleeve tubes are threadedly connected with threaded rods, a lifting plate is fixedly connected between the top ends of the plurality of threaded rods, the top end of the telescopic bellows is fixedly connected to the bottom of the lifting plate, and the telescopic bellows is communicated with the interior of the fixed tube.

[0011] By adopting the above technical solution, the height of the expansion assembly can be adjusted to meet the requirements of different salt spray test chambers.

[0012] Furthermore, the lifting assembly also includes a plurality of transmission gears respectively fixedly connected to the lower parts of the outer surfaces of the plurality of sleeve tubes, the top of the top cover is rotatably connected to an inner gear ring, and the inner wall of the inner gear ring is meshed with the plurality of transmission gears.

[0013] By adopting the above technical solution, multiple sleeve pipes can be driven to rotate at the same time.

[0014] Furthermore, the protective assembly includes two rotating shafts rotatably connected to the top of the top cover, the outer surfaces of the two rotating shafts are fixedly connected to protective covers, the tops of the two protective covers are fixedly connected to semicircular plates, and the inner walls of the two semicircular plates are adapted to the outer surface of the set plate.

[0015] By adopting the above technical solution, the protection of the lifting components and some expansion components can be achieved.

[0016] Furthermore, the protection component also includes two connecting gears fixedly connected to the top ends of the two rotating shafts, and the outer surfaces of the two connecting gears are meshed with each other. Both of the two protection covers are connected to magnetic strips, and the two magnetic strips are adapted to each other.

[0017] By adopting the above technical solution, the two protective covers can be closed by magnetic adsorption, so that they are easy to open and close and easy to operate.

[0018] Furthermore, the centering component includes a plurality of slide grooves which are equidistantly arranged in a circular shape on the top of the hollow table, a plurality of the slide grooves are slidably connected to the inside of a centering plate, the outer surfaces of the plurality of the centering plates are in contact with the outer surface of the collecting cup, the bottom ends of the plurality of the centering plates are fixedly connected to a connecting sliding shaft, a center column is rotatably connected between the top and bottom of the inner wall of the hollow table, a fixed plate is fixedly connected to the outer surface of the center column, a plurality of inclined grooves are equidistantly arranged in a circular shape on the outer surface of the fixed plate, and the plurality of connecting sliding shafts are slidably connected to the inside of the plurality of inclined grooves, respectively.

[0019] By adopting the above technical solution, the centering plates can be driven to move closer when the fixed disk rotates.

[0020] Furthermore, the centering component also includes a worm wheel fixedly connected to the outer surface of the center column, the inner wall of the hollow platform is rotatably connected to a worm, the outer surface of the worm is meshed with the outer surface of the worm wheel, and one end of the worm is fixedly connected to an adjustment block.

[0021] By adopting the above technical solution, the centering plates can be brought closer together by rotating the external adjustment block.

[0022] Furthermore, the main body module also includes a plurality of annular grooves which are all opened at the bottom of the top cover, and the top of the collection cup is movably engaged in the interior of one of the annular grooves.

[0023] By adopting the above technical solution, it is possible to achieve position limiting for collection cups of different sizes.

[0024] In summary, the present invention includes the following beneficial technical effects:

[0025] (1) The present invention provides an electronic weighing plate, so that the quality of the salt spray inside the salt spray test chamber can be known in real time without opening the salt spray test chamber, thereby avoiding the need for frequent operations by staff;

[0026] (2) The present invention, through the arrangement of the expansion component and the lifting component, makes it possible to adjust the height of the expansion component and the collection range, so that the device can be adapted to more types of salt spray test chambers, thereby improving the applicability of the device;

[0027] (3) The present invention can protect some parts by setting up the protection components, thereby avoiding the corresponding impact on the internal parts when the salt mist is collected;

[0028] (4) The present invention facilitates the replacement of the collection cup by providing a centering component and an annular groove, and also facilitates the centering of different types of collection cups, thereby improving the accuracy of electronic weighing pan measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a closed schematic diagram of the protection component of the present invention;

[0031] Figure 3 It is a schematic diagram of the positions of the expansion assembly and the lifting assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the exploded structure of the expansion assembly of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the centering component of the present invention;

[0034] Figure 6 It is a schematic diagram of the exploded structure of the centering component of the present invention;

[0035] Figure 7 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0036] Figure 8 It is a schematic diagram of the position of the limiting groove of the present invention.

[0037] Description of the numbers in the figure:

[0038] 100, main body module; 110, hollow table; 120, collecting cup; 130, top cover; 140, centering component; 141, slide groove; 142, centering plate; 143, connecting slide shaft; 144, center column; 145, fixing plate; 146, inclined groove; 147, worm wheel; 148, worm; 149, adjustment block; 150, annular groove;

[0039] 200, weighing and expansion module; 210, electronic weighing plate; 220, lifting assembly; 221, sleeve tube; 222, threaded rod; 223, lifting plate; 224, transmission gear; 225, inner gear ring; 230, fixed tube; 240, expansion assembly; 241, installation groove; 242, guide plate; 243, folding plastic guide plate; 244, threaded groove; 245, sleeve plate; 246, lifting ring; 247, connecting arm; 250, protection assembly; 251, rotating shaft; 252, protection cover; 253, semicircular plate; 254, connecting gear; 255, magnetic strip; 260, telescopic bellows. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The following is combined with Figure 1-8 The present invention is described in further detail.

[0044] See also Figure 1-8A self-weighing and collecting device for a salt spray test chamber includes a main body module 100 and a weighing expansion module 200. The main body module 100 includes a hollow platform 110. A collecting cup 120 is arranged on the top of the hollow platform 110. A top cover 130 is movably connected to the top of the collecting cup 120. A centering component 140 is arranged inside the hollow platform 110. The centering component 140 contacts the outer surface of the collecting cup 120. The weighing expansion module 200 includes an electronic device fixedly connected to the bottom of the hollow platform 110. The weighing pan 210 and the top cover 130 are provided with a lifting assembly 220, a telescopic bellows 260 is fixedly connected between the fixed tube 230 and the top of the top cover 130, the bottom end of the telescopic bellows 260 extends to the inside of the collecting cup 120, the top of the lifting assembly 220 is fixedly connected with the fixed tube 230, an expansion assembly 240 is provided between the outer surface of the fixed tube 230 and the top, and a protective assembly 250 located outside the lifting assembly 220 is provided on the top of the top cover 130.

[0045] When in use, the collection device is located inside the salt spray test chamber, and the electronic weighing plate 210 is electrically connected to the external display device. Then, the expansion component 240 and the lifting component 220 are adjusted according to the needs of the salt spray test chamber. The lifting component 220 adjusts the collection height of the expansion component 240, and the expansion component 240 adjusts the collection range, so as to adapt to different salt spray test chambers and improve the applicability of the device. At the same time, as the expansion component 240 receives more and more salt spray, the subsequent salt spray enters the interior of the collection cup 120 through the fixed tube 230 and the telescopic bellows 260 for collection, so that the electronic weighing plate 210 is weighed, and the external display device displays the weight value, so that there is no need to open the lid of the salt spray test machine for viewing every time, which is convenient for the staff to operate, and before use, the collection cups 120 of different sizes can be replaced, and then placed in the center of the collection cup 120 through the centering component 140, ensuring that different measuring cups are placed in the center, avoiding errors caused by large differences in placement positions, and ensuring measurement accuracy.

[0046] The expansion component 240 includes a plurality of mounting grooves 241. The top of the inner wall of the fixed tube 230 is conically arranged. The plurality of mounting grooves 241 are arranged in an annular shape and are equidistantly arranged at the top of the fixed tube 230. The interiors of the plurality of mounting grooves 241 are all movably connected with guide plates 242. A folding plastic guide plate 243 is fixedly connected between each two adjacent folding plastic guide plates 243. The expansion component 240 also includes a threaded groove 244 arranged on the outer surface of the fixed tube 230. The outer surface of the threaded groove 244 is threadedly connected with a set plate 245. The top of the set plate 245 is rotatably connected with a lifting ring 246. The outer surface of the lifting ring 246 is hinged with a plurality of connecting arms 247. One end of the plurality of connecting arms 247 The lifting assembly 220 is respectively hinged to the outer surfaces of multiple material guide plates 242, and includes multiple sleeve tubes 221 rotatably connected to the top of the top cover 130. The interiors of the multiple sleeve tubes 221 are all threadedly connected with threaded rods 222, and the tops of the multiple threaded rods 222 are fixedly connected with a lifting plate 223. The top of the telescopic bellows 260 is fixedly connected to the bottom of the lifting plate 223, and the telescopic bellows 260 is connected to the interior of the fixed tube 230. The lifting assembly 220 also includes multiple transmission gears 224 respectively fixedly connected to the lower parts of the outer surfaces of the multiple sleeve tubes 221. The top of the top cover 130 is rotatably connected with an inner gear ring 225, and the inner wall of the inner gear ring 225 is meshed with the multiple transmission gears 224.

[0047] By rotating the set plate 245, the set plate 245 will drive the lifting ring 246 to rise and fall. When the lifting ring 246 rises and falls, it will drive the connecting arm 247 to push the guide plate 242 to move. When the guide plate 242 moves, it will drive the folding plastic guide plate 243 to open or retract to a certain extent, thereby adjusting the collection range. By rotating the inner gear ring 225, multiple transmission gears 224 can be transmitted. The multiple transmission gears 224 drive the set tube 221 to rotate. The rotation of the set tube 221 will drive the threaded rod 222 and the lifting plate 223 to rise. When the lifting plate 223 rises, it will stretch the telescopic bellows 260, thereby adjusting the height of the expansion component 240, so that the height range of the expansion component 240 can be adjusted, thereby adapting to different salt spray test chambers and improving the applicability of the device.

[0048] The protective component 250 includes two rotating shafts 251 which are rotatably connected to the top of the top cover 130, and the outer surfaces of the two rotating shafts 251 are fixedly connected to protective covers 252. The tops of the two protective covers 252 are fixedly connected to semicircular plates 253, and the inner walls of the two semicircular plates 253 are adapted to the outer surface of the set plate 245. The protective component 250 also includes two connecting gears 254 which are respectively fixedly connected to the tops of the two rotating shafts 251, and the outer surfaces of the two connecting gears 254 are meshed with each other. The two protective covers 252 are connected to magnetic strips 255, and the two magnetic strips 255 are adapted to each other.

[0049] The protective cover 252 is rotated, and the two connecting gears 254 are meshed to make the two protective covers 252 swing closed, so that when the two protective covers 252 are closed, the two magnetic strips 255 are attracted to each other, and the two connecting gears 254 are fitted with the outer surface of the set plate 245, thereby forming a sealing effect to protect the internal parts.

[0050] The centering assembly 140 includes a plurality of slide grooves 141 which are equidistantly arranged in an annular shape on the top of the hollow platform 110, and a centering plate 142 is slidably connected to the interior of each of the plurality of slide grooves 141, and the outer surfaces of each of the plurality of centering plates 142 are in contact with the outer surface of the collecting cup 120, and the bottom ends of each of the plurality of centering plates 142 are fixedly connected to a connecting sliding shaft 143, and a center column 144 is rotatably connected between the top and the bottom of the inner wall of the hollow platform 110, and a fixed disk 145 is fixedly connected to the outer surface of the center column 144, and a plurality of inclined grooves are equidistantly arranged in an annular shape on the outer surface of the fixed disk 145 146, multiple connecting slide shafts 143 are respectively slidably connected to the inside of multiple inclined grooves 146, the centering component 140 also includes a worm wheel 147 fixedly connected to the outer surface of the center column 144, the inner wall of the hollow table 110 is rotatably connected to a worm 148, the outer surface of the worm 148 is meshed with the outer surface of the worm wheel 147, one end of the worm 148 is fixedly connected to an adjustment block 149, the main body module 100 also includes a plurality of annular grooves 150 that are all opened at the bottom of the top cover 130, and the top of the collection cup 120 is movably clamped in the inside of one of the annular grooves 150.

[0051] Rotate the adjustment block 149, the adjustment block 149 will drive the worm 148 to rotate, and the worm 148 will transmit the worm wheel 147 when rotating. The worm wheel 147 will drive the center column 144 to rotate. The rotation of the center column 144 will drive the fixed plate 145 to rotate. When the fixed plate 145 rotates, it will push the connecting slide shaft 143 through the inclined groove 146. The connecting slide shaft 143 drives the centering plate 142 to move and push the collecting cup 120, so that the collecting cup 120 is pushed to the center position, ensuring that the collecting cups 120 of different sizes are accurately placed in the center, and avoiding errors caused by large differences in the placement positions, ensuring the measurement accuracy, and subsequently the tops of the collecting cups 120 of different sizes are inserted into the annular grooves 150 of different sizes to complete the docking, so that the device can switch the collecting cups 120 of different sizes.

[0052] The implementation principle of the embodiment of the present invention is as follows: when in use, the collection device is located inside the salt spray test chamber, and the electronic weighing plate 210 is electrically connected to the external display device. Then, the expansion assembly 240 and the lifting assembly 220 are adjusted according to the needs of the salt spray test chamber. By rotating the set plate 245, the set plate 245 will drive the lifting ring 246 to move up and down. When the lifting ring 246 is lifted up and down, it will drive the connecting arm 247 to push the guide plate 242 to move. When the guide plate 242 moves, it will drive the folding plastic guide plate 243 to open or retract to a certain extent, thereby adjusting the collection range. By rotating the inner gear ring 225, multiple transmission gears 224 can be driven. Multiple transmission gears 224 drives the sleeve tube 221 to rotate, and the rotation of the sleeve tube 221 will drive the threaded rod 222 and the lifting plate 223 to rise, and when the lifting plate 223 rises, it will stretch the telescopic bellows 260, thereby adjusting the height of the expansion component 240, so that the height range of the expansion component 240 can be adjusted, thereby adapting to different salt spray test chambers and improving the applicability of the device. At the same time, as the expansion component 240 receives more and more salt spray, the subsequent salt spray enters the interior of the collection cup 120 through the fixed tube 230 and the telescopic bellows 260, so that the electronic weighing pan 210 weighs the salt spray, and the external display device displays the weight value, so there is no need to open the salt spray test chamber every time. The cover of the inspection machine can be checked to facilitate the operation of the staff. Before use, the collection cups 120 of different sizes can be replaced and placed on the top of the hollow table 110 and between the multiple centering plates 142. Then, by rotating the adjustment block 149, the adjustment block 149 will drive the worm 148 to rotate. When the worm 148 rotates, it will drive the worm gear 147. The worm gear 147 drives the center column 144 to rotate. The rotation of the center column 144 will drive the fixed plate 145 to rotate. When the fixed plate 145 rotates, it will push the connecting slide shaft 143 through the inclined groove 146. The connecting slide shaft 143 drives the centering plate 142 to move and push the collection cup 120, so that the collection cup 120 is pushed To the center position, ensure that the collection cups 120 of different sizes are accurately placed in the center, and avoid errors caused by large differences in placement positions, thereby ensuring measurement accuracy. Subsequently, the tops of the collection cups 120 of different sizes are inserted into the annular grooves 150 of different sizes to complete the docking, which is convenient for the device to switch collection cups 120 of different sizes, and when the device is used for collection, the protective cover 252 can be rotated, and the two connecting gears 254 are engaged to make the two protective covers 252 swing closed, so that when the two protective covers 252 are closed, the two magnetic strips 255 are attracted to each other, and the two connecting gears 254 are in contact with the outer surface of the set plate 245, thereby forming a sealing effect to protect the internal parts.

[0053] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-weighing and collecting device for a salt spray test chamber, comprising a main module (100) and a weighing expansion module (200), characterized in that: The main body module (100) comprises a hollow platform (110), a collecting cup (120) is arranged on the top of the hollow platform (110), a top cover (130) is movably connected to the top of the collecting cup (120), a centering component (140) is arranged inside the hollow platform (110), and the centering component (140) is in contact with the outer surface of the collecting cup (120); The weighing expansion module (200) comprises an electronic weighing plate (210) fixedly connected to the bottom of the hollow platform (110); a lifting assembly (220) is arranged on the top of the top cover (130); a telescopic bellows (260) is fixedly connected between the fixed tube (230) and the top of the top cover (130); the bottom end of the telescopic bellows (260) extends to the inside of the collection cup (120); a fixed tube (230) is fixedly connected to the top of the lifting assembly (220); an expansion assembly (240) is arranged between the outer surface of the fixed tube (230) and the top; and a protective assembly (250) located outside the lifting assembly (220) is arranged on the top of the top cover (130).

2. The self-weight collection device for a salt spray test chamber according to claim 1, characterized in that: The expansion assembly (240) comprises a plurality of installation grooves (241), the top of the inner wall of the fixed tube (230) is arranged in a conical shape, the plurality of installation grooves (241) are arranged in a ring shape and are equidistantly arranged on the top of the fixed tube (230), the interiors of the plurality of installation grooves (241) are all movably connected with a material guide plate (242), and a folded plastic guide plate (243) is fixedly connected between every two adjacent folded plastic guide plates (243).

3. A salt spray test chamber self-weight collection device according to claim 2, characterized in that: The expansion component (240) also includes a threaded groove (244) provided on the outer surface of the fixed tube (230), the outer surface of the threaded groove (244) is threadedly connected to a set plate (245), the top of the set plate (245) is rotatably connected to a lifting ring (246), the outer surface of the lifting ring (246) is hinged with a plurality of connecting arms (247), and one end of the plurality of connecting arms (247) is respectively hinged to the outer surfaces of a plurality of guide plates (242).

4. The self-weight collection device for a salt spray test chamber according to claim 3, characterized in that: The lifting assembly (220) comprises a plurality of sleeve tubes (221) rotatably connected to the top of the top cover (130); the interiors of the plurality of sleeve tubes (221) are all threadedly connected to threaded rods (222); a lifting plate (223) is fixedly connected between the top ends of the plurality of threaded rods (222); the top end of the telescopic bellows (260) is fixedly connected to the bottom of the lifting plate (223); and the telescopic bellows (260) is connected to the interior of the fixed tube (230).

5. The self-weight collection device for a salt spray test chamber according to claim 4, characterized in that: The lifting assembly (220) further comprises a plurality of transmission gears (224) respectively fixedly connected to the lower portions of the outer surfaces of the plurality of sleeve tubes (221); the top of the top cover (130) is rotatably connected to an inner gear ring (225); the inner wall of the inner gear ring (225) is meshed with the plurality of transmission gears (224).

6. The self-weight collection device for a salt spray test chamber according to claim 5, characterized in that: The protection component (250) comprises two rotating shafts (251) both rotatably connected to the top of the top cover (130), the outer surfaces of the two rotating shafts (251) are fixedly connected to protection covers (252), the tops of the two protection covers (252) are fixedly connected to semicircular plates (253), and the inner walls of the two semicircular plates (253) are adapted to the outer surface of the set plate (245).

7. The self-weight collection device for a salt spray test chamber according to claim 6, characterized in that: The protection component (250) further comprises two connecting gears (254) respectively fixedly connected to the top ends of the two rotating shafts (251), the outer surfaces of the two connecting gears (254) meshing with each other, and the two protection covers (252) are both connected to magnetic strips (255), and the two magnetic strips (255) are adapted to each other.

8. The self-weight collection device for a salt spray test chamber according to claim 7, characterized in that: The centering component (140) comprises a plurality of slide grooves (141) which are equidistantly arranged in an annular shape on the top of the hollow platform (110); a centering plate (142) is slidably connected to the interior of each of the plurality of slide grooves (141); the outer surfaces of each of the plurality of centering plates (142) are in contact with the outer surface of the collecting cup (120); the bottom ends of each of the plurality of centering plates (142) are fixedly connected to a connecting slide shaft (143); a center column (144) is rotatably connected between the top and the bottom of the inner wall of the hollow platform (110); a fixed plate (145) is fixedly connected to the outer surface of the center column (144); a plurality of inclined grooves (146) are equidistantly arranged in an annular shape on the outer surface of the fixed plate (145); and the plurality of connecting slide shafts (143) are slidably connected to the interior of each of the plurality of inclined grooves (146), respectively.

9. The self-weight collection device for a salt spray test chamber according to claim 8, characterized in that: The centering component (140) also includes a worm wheel (147) fixedly connected to the outer surface of the center column (144); the inner wall of the hollow platform (110) is rotatably connected to a worm (148); the outer surface of the worm (148) is meshed with the outer surface of the worm wheel (147); and one end of the worm (148) is fixedly connected to an adjustment block (149).

10. The self-weight collection device for a salt spray test chamber according to claim 9, characterized in that: The main body module (100) further comprises a plurality of annular grooves (150) each formed at the bottom of the top cover (130), and the top of the collection cup (120) is movably engaged in the interior of one of the annular grooves (150).

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