Walk-in type high-low temperature composite salt spray test box

Abstract

The invention discloses a walk-in type high-low temperature composite salt spray test box, and relates to the technical field of salt spray testing machines. The device comprises a bottom plate, a spraying assembly is fixedly connected to the position, close to one side, of the top end of the bottom plate, a cleaning assembly is rotatably connected to the top end of the spraying assembly, a salt mist box body is fixedly connected to the position, close to the center of one side, of the back end of the spraying assembly, and a controller is fixedly connected to the position, close to the salt mist box body, of the top end of the bottom plate. A first vertical plate is fixedly connected to the top end, close to the controller, of the bottom plate, and a containing box is fixedly connected to the front end, close to the center of the top, of the first vertical plate. According to the invention, through operation of the salt spray box body and mutual cooperation of the spraying assembly, the nozzle and the rotating box, work of uniform spraying at each corner in the test box body is realized, so that the problem that salt spray needs to be dispersed into an internal test cavity of the whole salt spray test box through airflow and the like is solved; and the sufficient contact time of the test article and the salt mist is relatively long.

Description

Technical Field

[0001] The invention relates to the technical field of salt spray test machines, in particular to a walk-in high and low temperature composite salt spray test box. Background Art

[0002] The salt spray corrosion test chamber can test the salt spray corrosion resistance of materials and their protective layers, as well as the process quality comparison of similar protective layers. It can also test the salt spray corrosion resistance of certain products. This product is suitable for salt spray corrosion tests of parts, electronic components, protective layers of metal materials and industrial products.

[0003] During the test in the existing salt spray test chamber, the salt spray needs to be dispersed into the internal test chamber of the entire salt spray test chamber through airflow, so that the test product is fully in contact with the salt spray for a long time, resulting in a long overall test time. At the same time, in order to facilitate the staff to observe the test results inside the chamber, a top cover is set above the top cover of the test chamber. However, due to the rising mist, water droplets are adsorbed on the top cover of the equipment, thereby causing the water droplets on the top cover to affect the observation line of sight. In view of the above problems, the inventor proposes a walk-in high and low temperature composite salt spray test chamber to solve the above problems. Summary of the invention

[0004] In order to solve the problem that salt mist needs to be dispersed into the internal test chamber of the entire salt spray test chamber by airflow, etc., so that the test product is fully in contact with the salt mist for a long time, and the water droplets on the top cover of the equipment are adsorbed due to the rising mist, so that the water droplets on the top cover affect the observation line of sight; the purpose of the present invention is to provide a walk-in high and low temperature composite salt spray test chamber.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a walk-in high and low temperature composite salt spray test chamber, comprising a bottom plate, a spray assembly is fixedly connected to the top of the bottom plate and near one side, a cleaning assembly is rotatably connected to the top of the spray assembly, a salt spray chamber body is fixedly connected to the back end of the spray assembly and near the center of one side, a controller is fixedly connected to the top of the bottom plate and near the salt spray chamber body, a vertical plate 1 is fixedly connected to the top of the bottom plate and near the controller, a placement box is fixedly connected to the front end of the vertical plate 1 and near the top center, a support plate 1 is fixedly connected to the center of the bottom end of the placement box, a lighting lamp is fixedly connected to the bottom end of the support plate 1, and the lighting lamp is located above the controller.

[0006] Preferably, the spray assembly includes a test box body, and the bottom end of the test box body is fixedly connected to the bottom plate, and two side walls of the test box body are symmetrically fixedly connected with mounting plates 2 near the center, and a plurality of brackets are detachably connected between the two mounting plates 2.

[0007] Preferably, the cleaning assembly includes a cover plate, and the cover plate is rotatably connected to the top of the test box body, an observation cover is fixedly connected inside the cover plate and near the center of one side, a cleaning cotton is symmetrically slidably provided at the bottom of the observation cover and near the center, and a mounting plate is fixedly connected to the bottom of the cover plate and near the corner of one side.

[0008] Preferably, a vertical block is symmetrically fixedly connected to the bottom end of the mounting plate and near the center of one side, a sliding shaft is slidably connected between the two vertical blocks, a U-shaped shaft is fixedly connected to the side end of the sliding shaft, and the U-shaped shaft is fixedly connected to two cleaning cottons, a circular ring is fixedly connected to the outer ring of the sliding shaft and located between the two vertical blocks, a spring is fixedly connected to the side end of the circular ring, and the other end of the spring is fixedly connected to one of the vertical blocks, and the spring is sleeved on the outer ring of the sliding shaft.

[0009] Preferably, a toggle block is rotatably connected to one bottom end of the mounting plate near the center of one side, a turntable is rotatably connected to one bottom end of the mounting plate and is located on the outer ring of the toggle block, a short plate is fixedly connected to the outer ring of the turntable, a vertical axis is fixedly connected to the bottom end of the short plate near the turntable, and a short axis is fixedly connected to the bottom end of the short plate near the other side.

[0010] Preferably, the outer ring of the short shaft is rotatably connected with a connecting frame near the center, the end of the sliding shaft away from the ring is fixedly connected with an insertion shaft, the end of the connecting frame close to the insertion shaft is fixedly connected with a U-shaped plate, and the insertion shaft is rotatably connected to the inner wall of the U-shaped plate, the top of the cover plate and near the corners is fixedly connected with a protective box, the top of the cover plate and located inside the protective box is fixedly connected with a motor 1, and the output end of the motor 1 passes through the cover plate and is fixedly connected to the toggle block.

[0011] Preferably, side panels are symmetrically fixedly connected to the two side walls of the test box body and near the bottom, a limiting shaft is fixedly connected between the two side panels and near one side, a support plate 2 is symmetrically slidably connected to the outer ring of the limiting shaft and near the center, a double-headed screw is rotatably connected between the two side panels and near the other side, and both support plates 2 are threadably connected to the double-headed screw.

[0012] Preferably, a top box is fixedly connected to the top of the second support plate, a rack is symmetrically fixedly connected between the two side plates and near the double-headed screw and the limit shaft, the two side ends of the top box are symmetrically rotatably connected to the first gear, and the first gear is meshed with the rack, and a vertical plate two is symmetrically fixedly connected inside the top box and near the center, and one side end of the two vertical plates two near the first gear is symmetrically rotatably connected to a rotating shaft one, and one side end of the rotating shaft passes through the top box and is fixedly connected to the first gear.

[0013] Preferably, the two opposite ends of the two vertical plates are symmetrically rotatably connected with half-bevel gears, a rotating shaft 2 is symmetrically rotatably connected between the inner walls of the top box and close to the half-bevel gears, a bevel gear 1 is symmetrically fixedly connected to the outer ring of the rotating shaft 2 and close to the half-bevel gears, and both bevel gears 1 can engage with the half-bevel gears.

[0014] Preferably, a rotating box is symmetrically rotatably connected to the top of the top box and near the center, and the top of the second rotating shaft passes through the top box and is fixedly connected to the rotating box, and nozzles are symmetrically fixedly connected to the two side ends of the rotating box, and connecting pipes are symmetrically provided at the opposite ends of the two rotating boxes, and the other ends of the four connecting pipes pass through the test box body and are fixedly connected to the salt spray box body, and a groove wheel is rotatably connected to the corner of the side end of the test box body away from the controller, and the side end of the double-headed screw passes through the test box body and is fixedly connected to the groove wheel, two second gears are rotatably connected to the side end of the test box body and near the groove wheel, and the two second gears are meshed with each other, and a plurality of shifting shafts are fixedly connected to the side end of the second gear and near the outer ring, and the plurality of shifting shafts are distributed in a ring shape, and a motor 2 is fixedly connected to the side end of the test box body near the groove wheel, and the output end of the motor 2 is fixedly connected to one of the second gears.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the salt spray chamber body is operated, and then the spray assembly, the nozzle and the rotating box cooperate with each other to achieve uniform spraying in every corner of the test chamber body, thereby solving the problem of needing to disperse the salt spray to the internal test chamber of the entire salt spray test chamber through airflow, etc., so that the test product is fully in contact with the salt spray for a long time;

[0017] 2. In the present invention, by running motor 1, the toggle block, the cleaning assembly and the cleaning cotton cooperate with each other to achieve the effect of cleaning the observation cover, thereby preventing the staff from being unable to observe the internal conditions of the test chamber body due to water droplets, thereby solving the problem that the water droplets on the top cover of the equipment will affect the observation line of sight due to the adsorption of water droplets on the top cover due to the rising fog. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the cover plate structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the test box body of the present invention.

[0022] Figure 4 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0024] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point C in the middle.

[0025] Figure 7 For the present invention Figure 3 Enlarged structural diagram at D in the middle.

[0026] Figure 8 For the present invention Figure 3 Enlarged structural diagram at E in the middle.

[0027] In the figure: 1, bottom plate; 101, controller; 102, vertical plate 1; 103, placement box; 104, support plate 1; 105, salt spray chamber body; 107, lighting lamp; 3, cleaning assembly; 301, cover plate; 302, observation cover; 303, cleaning cotton; 304, mounting plate 1; 305, vertical block; 306, sliding shaft; 307, ring; 308, spring; 309, turntable; 310, short plate; 311, vertical shaft; 312, short shaft; 313, connecting frame; 314, U-shaped plate; 315, toggle block; 316, motor 1; 4. Spray assembly; 401. Test chamber body; 402. Mounting plate 2; 403. Bracket; 404. Side plate; 405. Double-headed screw; 406. Limiting shaft; 407. Support plate 2; 408. Top box; 409. Rack; 410. First gear; 411. Vertical plate 2; 412. Rotating shaft 1; 413. Half-face bevel gear; 414. Rotating shaft 2; 415. Bevel gear 1; 416. Rotating box; 417. Spray head; 418. Connecting pipe; 419. Groove wheel; 420. Second gear; 421. Dial shaft; 422. Motor 2. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example: Figure 1-8 As shown, the present invention provides a technical solution: a walk-in high and low temperature composite salt spray test chamber, comprising a bottom plate 1, a spray assembly 4 is fixedly connected to the top of the bottom plate 1 and near one side, a cleaning assembly 3 is rotatably connected to the top of the spray assembly 4, a salt spray chamber body 105 is fixedly connected to the back end of the spray assembly 4 and near the center of one side, a controller 101 is fixedly connected to the top of the bottom plate 1 and near the salt spray chamber body 105, a vertical plate 102 is fixedly connected to the top of the bottom plate 1 and near the controller 101, a placement box 103 is fixedly connected to the front end of the vertical plate 102 and near the top center, a support plate 104 is fixedly connected to the center of the bottom end of the placement box 103, a lighting lamp 107 is fixedly connected to the bottom end of the support plate 104, and the lighting lamp 107 is located above the controller 101.

[0030] The spray assembly 4 includes a test box body 401, and the bottom end of the test box body 401 is fixedly connected to the bottom plate 1, and the two side walls of the test box body 401 are symmetrically fixedly connected with a second mounting plate 402 near the center, and a plurality of brackets 403 are detachably connected between the two second mounting plates 402.

[0031] By adopting the above technical solution, the second mounting plate 402 is symmetrically arranged on the two side walls of the test box body 401 to install a plurality of detachable brackets 403. The detachable arrangement is for the convenience of adjusting the distance between two brackets 403.

[0032] The cleaning assembly 3 includes a cover plate 301, and the cover plate 301 is rotatably connected to the top of the test box body 401, an observation cover 302 is fixedly connected inside the cover plate 301 and near the center of one side, a cleaning cotton 303 is symmetrically slidably provided at the bottom of the observation cover 302 and near the center, and a mounting plate 304 is fixedly connected to the bottom of the cover plate 301 and near the corner of one side.

[0033] By adopting the above technical solution, an observation cover 302 is provided inside the cover plate 301 to facilitate operators to observe the internal conditions.

[0034] A vertical block 305 is symmetrically fixedly connected to the bottom end of the mounting plate 304 and near the center of one side, a sliding shaft 306 is slidably connected between the two vertical blocks 305, a U-shaped shaft is fixedly connected to the side end of the sliding shaft 306, and the U-shaped shaft is fixedly connected to two cleaning cottons 303, a circular ring 307 is fixedly connected to the outer ring of the sliding shaft 306 and located between the two vertical blocks 305, a spring 308 is fixedly connected to the side end of the circular ring 307, and the other end of the spring 308 is fixedly connected to one of the vertical blocks 305, and the spring 308 is sleeved on the outer ring of the sliding shaft 306.

[0035] By adopting the above technical solution, a ring 307 and a spring 308 are arranged on the outer ring of the sliding shaft 306 and between the two vertical blocks 305 in order to move the sliding shaft 306 back and forth.

[0036] A toggle block 315 is rotatably connected to the bottom end of the mounting plate 304 and near the center of one side, a turntable 309 is rotatably connected to the bottom end of the mounting plate 304 and located on the outer ring of the toggle block 315, a short plate 310 is fixedly connected to the outer ring of the turntable 309, a vertical shaft 311 is fixedly connected to the bottom end of the short plate 310 and near the turntable 309, and a short shaft 312 is fixedly connected to the bottom end of the short plate 310 and near the other side.

[0037] By adopting the above technical solution, the turntable 309 is provided to install and fix the vertical shaft 311 and the short shaft 312 , which will drive the short plate 310 to rotate under the cooperation of the toggle block 315 .

[0038] The outer circle of the short shaft 312 is rotatably connected with a connecting frame 313 near the center, the end of the sliding shaft 306 away from the ring 307 is fixedly connected with an insertion shaft, the end of the connecting frame 313 close to the insertion shaft is fixedly connected with a U-shaped plate 314, and the insertion shaft is rotatably connected to the inner wall of the U-shaped plate 314, the top of the cover plate 301 and near the corner is fixedly connected with a protective box, the top of the cover plate 301 and located inside the protective box is fixedly connected with a motor 316, and the output end of the motor 316 passes through the cover plate 301 and is fixedly connected to the toggle block 315.

[0039] By adopting the above technical solution, the motor 1 316 is operated so that the fixedly connected toggle block 315 is rotated.

[0040] Side panels 404 are symmetrically fixedly connected to both side walls of the test box body 401 and near the bottom, a limit shaft 406 is fixedly connected between the two side panels 404 and near one side, a support plate 407 is symmetrically slidably connected to the outer circle of the limit shaft 406 and near the center, a double-headed screw 405 is rotatably connected between the two side panels 404 and near the other side, and the two support plates 407 are both threadedly rotatably connected to the double-headed screw 405.

[0041] By adopting the above technical solution, after the double-headed screw 405 is rotated, the two support plates 407 connected by the threaded rotation can move toward each other.

[0042] A top box 408 is fixedly connected to the top of the support plate 407, a rack 409 is symmetrically fixedly connected between the two side plates 404 and near the double-headed screw 405 and the limit shaft 406, the two side ends of the top box 408 are symmetrically rotatably connected to the first gear 410, and the first gear 410 is meshed with the rack 409, and a vertical plate 411 is symmetrically fixedly connected inside the top box 408 and near the center, and a rotating shaft 412 is symmetrically rotatably connected to one side end of the two vertical plates 411 near the first gear 410, and the side end of the rotating shaft 412 passes through the top box 408 and is fixedly connected to the first gear 410.

[0043] By adopting the above technical solution, the first gear 410 is set at the side end of the top box 408 to cooperate with the rack 409 to achieve the effect of the first gear 410 rotating.

[0044] The two vertical plates 411 are symmetrically connected to the opposite ends with half-bevel gears 413 for rotation, and the rotating shaft 414 is symmetrically connected to the inner walls of the top box 408 and close to the half-bevel gears 413 for rotation. The outer ring of the rotating shaft 414 is symmetrically fixedly connected with a bevel gear 1 415 close to the half-bevel gear 413, and both bevel gears 1 415 can engage with the half-bevel gear 413.

[0045] By adopting the above technical solution, the half-bevel gear 413 rotates under the action of the rotating shaft 1 412, and then the rotating shaft 2 414 performs a reciprocating rotation effect under the cooperation of the two meshing bevel gears 1 415.

[0046] The top of the top box 408 is symmetrically connected to the rotating box 416 near the center, and the top of the second rotating shaft 414 passes through the top box 408 and is fixedly connected to the rotating box 416. The two sides of the rotating box 416 are symmetrically fixedly connected to the nozzles 417. The two rotating boxes 416 are symmetrically provided with connecting pipes 418 at the opposite ends, and the other ends of the four connecting pipes 418 pass through the test box body 401 and are fixedly connected to the salt spray box body 105. The corner of the side end of the test box body 401 away from the controller 101 is rotatably connected with a groove wheel 419, and the double-headed screw The side end 405 passes through the test box body 401 and is fixedly connected to the groove wheel 419. The side end of the test box body 401 and near the groove wheel 419 are rotatably connected to two second gears 420, and the two second gears 420 are meshed with each other. The side end of the second gear 420 and near the outer ring are fixedly connected to a plurality of shift shafts 421, and the plurality of shift shafts 421 are distributed in a ring shape. The side end of the test box body 401 and near the groove wheel 419 are fixedly connected to a second motor 422, and the output end of the second motor 422 is fixedly connected to one of the second gears 420.

[0047] By adopting the above technical solution, the second motor 422 is operated so that the two second gears 420 that are meshed with each other rotate towards each other at the same time, and then under the action of the shifting shaft 421, the groove wheel 419 performs an intermittent reciprocating rotation effect.

[0048] Working principle: When the present invention is used, the test piece to be tested is first placed on the multiple brackets 403, and then the salt spray chamber body 105 is operated. Then, under the action of the connecting pipe 418, the salt spray is evenly sprayed upward through the multiple nozzles 417 under the action of the rotating box 416, and then the motor 2 422 is operated, so that the two second gears 420 that are meshed with each other rotate with each other, and under the cooperation of the two sets of dial shafts 421, the groove wheel 419 performs an intermittent reciprocating rotation effect, thereby causing the fixed double-headed screw 405 to perform intermittent reciprocating rotation. At this time, the screw threaded connection with it is rotated. The two support plates 407 can achieve the effect of reciprocating movement under the action of the limit shaft 406, and then the half-bevel gear 413 is intermittently reciprocated under the cooperation of the rack 409 and the first gear 410, and then the rotating box 416 drives the nozzle 417 to rotate back and forth under the cooperation of the two meshing bevel gears 415, so as to achieve the work of uniform spraying in every corner inside the test box body 401, thereby solving the problem of needing to disperse the salt spray to the internal test chamber of the entire salt spray test box through airflow, etc., so that the test product is fully in contact with the salt spray for a long time;

[0049] When water droplets appear on the observation cover 302, making it impossible for the staff to normally view the internal situation of the test chamber body 401, the motor 316 is operated to rotate the fixedly connected toggle block 315, and then under the action of the vertical shaft 311, the short shaft 312 drives the short plate 310 to rotate, and then under the cooperation of the connecting frame 313 and the U-shaped plate 314 and the spring 308 and the ring 307, the sliding shaft 306 drives the two cleaning cottons 303 to move back and forth horizontally, thereby achieving the effect of cleaning the observation cover 302, preventing the staff from being unable to observe the internal situation of the test chamber body 401 due to the water droplets, thereby solving the problem that the water droplets on the top cover of the equipment will affect the observation line of sight due to the rising fog absorbing the water droplets.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A walk-in high and low temperature composite salt spray test chamber, comprising a bottom plate (1), characterized in that: A spray assembly (4) is fixedly connected to the top of the bottom plate (1) and near one side, a cleaning assembly (3) is rotatably connected to the top of the spray assembly (4), a salt spray chamber body (105) is fixedly connected to the back end of the spray assembly (4) and near the center of one side, a controller (101) is fixedly connected to the top of the bottom plate (1) and near the salt spray chamber body (105), a vertical plate (102) is fixedly connected to the top of the bottom plate (1) and near the controller (101), a placement box (103) is fixedly connected to the front end of the vertical plate (102) and near the top center, a support plate (104) is fixedly connected to the center of the bottom end of the placement box (103), a lighting lamp (107) is fixedly connected to the bottom end of the support plate (104), and the lighting lamp (107) is located above the controller (101).

2. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 1, characterized in that: The spray assembly (4) comprises a test box body (401), wherein the bottom end of the test box body (401) is fixedly connected to the bottom plate (1), and two side walls of the test box body (401) are symmetrically fixedly connected with a second mounting plate (402) near the center, and a plurality of brackets (403) are detachably connected between the two second mounting plates (402).

3. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 2, characterized in that: The cleaning assembly (3) comprises a cover plate (301), and the cover plate (301) is rotatably connected to the top of the test box body (401), an observation cover (302) is fixedly connected inside the cover plate (301) and near the center of one side, a cleaning cotton (303) is symmetrically slidably provided at the bottom end and near the center of the observation cover (302), and a mounting plate (304) is fixedly connected at the bottom end and near the corner of one side.

4. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 3, characterized in that: A vertical block (305) is symmetrically fixedly connected at the bottom end of the mounting plate (304) and near the center of one side, a sliding shaft (306) is slidably connected between the two vertical blocks (305), a U-shaped shaft is fixedly connected to the side end of the sliding shaft (306), and the U-shaped shaft is fixedly connected to two cleaning cottons (303), a circular ring (307) is fixedly connected to the outer ring of the sliding shaft (306) and located between the two vertical blocks (305), a spring (308) is fixedly connected to the side end of the circular ring (307), and the other end of the spring (308) is fixedly connected to one of the vertical blocks (305), and the spring (308) is sleeved on the outer ring of the sliding shaft (306).

5. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 4, characterized in that: A toggle block (315) is rotatably connected at the bottom end of the mounting plate (304) and near the center of one side; a turntable (309) is rotatably connected at the bottom end of the mounting plate (304) and located on the outer ring of the toggle block (315); a short plate (310) is fixedly connected to the outer ring of the turntable (309); a vertical shaft (311) is fixedly connected at the bottom end of the short plate (310) and near the turntable (309); and a short shaft (312) is fixedly connected at the bottom end of the short plate (310) and near the other side.

6. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 5, characterized in that: The outer ring of the short shaft (312) is rotatably connected with a connecting frame (313) near the center, the end of the sliding shaft (306) away from the ring (307) is fixedly connected with an insertion shaft, the end of the connecting frame (313) near the insertion shaft is fixedly connected with a U-shaped plate (314), and the insertion shaft is rotatably connected to the inner wall of the U-shaped plate (314), the top of the cover plate (301) is fixedly connected with a protective box near the corner, the top of the cover plate (301) is fixedly connected with a motor 1 (316) located inside the protective box, and the output end of the motor 1 (316) passes through the cover plate (301) and is fixedly connected to the toggle block (315).

7. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 2, characterized in that: The side walls of the test box body (401) are symmetrically fixedly connected with side panels (404) near the bottom, a limit shaft (406) is fixedly connected between the two side panels (404) and near one side, a second support plate (407) is symmetrically slidably connected to the outer ring of the limit shaft (406) and near the center, a double-headed screw (405) is rotatably connected between the two side panels (404) and near the other side, and the two second support plates (407) are both threadedly rotatably connected to the double-headed screw (405).

8. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 7, characterized in that: The top of the second support plate (407) is fixedly connected to a top box (408), and a rack (409) is symmetrically fixedly connected between the two side plates (404) and near the double-headed screw (405) and the limiting shaft (406). The two side ends of the top box (408) are symmetrically rotatably connected to the first gear (410), and the first gear (410) is meshed with the rack (409). The inside of the top box (408) and near the center is symmetrically fixedly connected to a second vertical plate (411), and one side end of the two vertical plates (411) near the first gear (410) is symmetrically rotatably connected to a first rotating shaft (412), and the side end of the first rotating shaft (412) passes through the top box (408) and is fixedly connected to the first gear (410).

9. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 8, characterized in that: The two vertical plates (411) are symmetrically rotatably connected at opposite ends with half-bevel gears (413); a rotating shaft (414) is symmetrically rotatably connected between the inner walls of the top box (408) and close to the half-bevel gears (413); a bevel gear (415) is symmetrically fixedly connected to the outer ring of the rotating shaft (414) and close to the half-bevel gears (413); and both bevel gears (415) can mesh with the half-bevel gears (413).

10. A walk-in high and low temperature composite salt spray test chamber as claimed in claim 9, characterized in that: The top of the top box (408) is symmetrically connected to a rotating box (416) near the center, and the top of the second rotating shaft (414) passes through the top box (408) and is fixedly connected to the rotating box (416). The two sides of the rotating box (416) are symmetrically fixedly connected to nozzles (417). The two opposite ends of the two rotating boxes (416) are symmetrically provided with connecting pipes (418), and the other ends of the four connecting pipes (418) all pass through the test box body (401) and are fixedly connected to the salt spray box body (105). The corner of one side of the test box body (401) away from the controller (101) is rotatably connected to a groove wheel (419), and a double-headed screw The side end (405) passes through the test box body (401) and is fixedly connected to the groove wheel (419). Two second gears (420) are rotatably connected to the side end of the test box body (401) near the groove wheel (419), and the two second gears (420) are meshed with each other. A plurality of shifting shafts (421) are fixedly connected to the side end of the second gear (420) near the outer ring, and the plurality of shifting shafts (421) are distributed in a ring shape. A second motor (422) is fixedly connected to the side end of the test box body (401) near the groove wheel (419), and the output end of the second motor (422) is fixedly connected to one of the second gears (420).

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