Double-layer sealing door for three-comprehensive test box

Abstract

The invention relates to the technical field of three-comprehensive test boxes, and discloses a double-layer sealing door for a three-comprehensive test box, the double-layer sealing door comprises a test box main body, a movable inner door assembly is arranged in the test box main body, the lower part of the front side of the inner door assembly is linked with a linkage assembly through an adjusting assembly, and one side of the linkage assembly is provided with an outer door. According to the double-layer sealing door for the three-comprehensive test box, the device is provided with the inner sealing door and the outer sealing door so as to block pressure generated by a water injection experiment, the sealing performance of the device can be better through the structure of the two-layer sealing door, and when the device is opened and closed, linkage can be generated between the inner door assembly and the outer door, so that the sealing performance is improved. When the inner door assembly is closed, the outer door is driven to be closed, so that the two doors do not need to be manually closed, the device is more convenient to operate, in addition, the inner door assembly is movably closed, the outer door is rotationally closed, the door closing modes are different, the anti-pressure ability of an experiment is enhanced to a certain extent, and the use feeling of the device is better.

Description

Technical Field

[0001] The invention relates to the technical field of three-integrated test boxes, in particular to a double-layer sealed door for a three-integrated test box. Background Art

[0002] The three-in-one test chamber is a test chamber that integrates the three functions of temperature, humidity and vibration. It has a fast temperature change rate and can provide a comprehensive test environment of temperature, humidity and vibration. It is mainly used to simulate the climate environment and is suitable for aerospace products, information electronic instruments and meters, materials, electrical, electronic products, and various electronic components to test their various performance indicators in a comprehensive harsh environment. It can provide a temperature and humidity change environment for scientific research and production units such as aerospace, aviation, petroleum, chemical, electronics, and communications, and can apply electrical vibration stress to the test product in the test chamber according to the specified cycle, so that users can conduct temperature, humidity, and vibration comprehensive stress screening tests on the whole machine (or parts), electrical appliances, instruments, materials, etc., so as to assess the adaptability of the test product or evaluate the behavior of the test product.

[0003] In the field of environmental simulation tests, the three-in-one test chamber is an important test equipment. Its performance and sealing are directly related to the accuracy and reliability of the test results. Especially when simulating complex environments such as high and low temperatures, humidity and vibration, the sealing performance of the test chamber is particularly important. In this context, the technology of double-layer sealed doors for three-in-one test chambers came into being.

[0004] The prior art publication number is CN220730389U, and provides a double-layer sealed door for a three-integrated test box, comprising an outer double-opening door for blocking the box opening of the test box and an inner double-opening door arranged on the inner side of the box opening, the two double-opening doors are hinged to the test box; the height of the inner double-opening door is lower than the height of the outer double-opening door, and is higher than the maximum water filling height of the test box; the two outer box doors included in the outer double-opening door and the two inner box doors included in the inner double-opening door are both detachably connected via a transverse lock, and one of the outer box doors is detachably connected to the test box via a longitudinal lock, and by arranging the inner and outer double-layer sealed doors at the box opening of the test box, the inner double-opening door can block most of the water injection pressure for the outer double-opening door, and the outer double-opening door only bears a small part of the water injection pressure, so that the box opening can be completely sealed, the double-layer sealing effect is better, and the water injection pressure does not directly act on the outer double-opening door, which can avoid deformation of the outer double-opening door and water leakage.

[0005] Although the above-mentioned prior art has a double-layer door structure, the opening method between the two doors is single. Two sets of hinges are installed correspondingly on the two doors. When opening and closing, the doors can only be rotated correspondingly, and there is no free choice to open together or separately.

[0006] It can be seen that a double-layer sealed door is needed for a three-in-one test box to solve the problem that the opening method between the two doors mentioned in the above background technology is single, and two sets of hinges are installed correspondingly on the two doors. When opening and closing, the doors can only be rotated accordingly, and there is no free choice to open them together or separately. Summary of the invention

[0007] The purpose of the present invention is to provide a double-layer sealed door for a three-in-one test box to solve the problem in the above-mentioned background technology that the opening method between the two doors is single, two sets of hinges are installed correspondingly on the two doors, and the doors can only be opened and closed correspondingly, and there is no free choice to open them together or separately.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: A double-layer sealed door for a three-integrated test box, comprising a test box body, a movable inner door assembly is arranged inside the test box body, and a linkage assembly is linked to the lower part of the front side of the inner door assembly through an adjustment assembly, and an outer door is arranged on one side of the linkage assembly; The inner door assembly comprises a first inner door and a second inner door, and the upper and lower ends of the first inner door and the second inner door are both located inside the track for movement, a lower tooth is provided below one side of the track, and one side of the lower tooth meshes with a lower gear, a motor is installed on the lower gear, a rack is connected to one side below the first inner door, and one side of the rack meshes with a first transmission gear, and the first transmission gear is connected to a second transmission gear located on one side of the adjustment assembly through a universal chain; The adjustment assembly includes a large gear and a small gear meshing with each other, and an inner block that can penetrate and move is arranged inside the large gear, a long shaft gear is arranged on one side of the inner block, and an output gear meshing with the long shaft gear is arranged on one side of the long shaft gear, and one end of the output gear is connected to the transmission wheel; A fixed frame and a movable frame that moves inside the fixed frame are arranged on the outside of the transmission wheel, a first connecting rod is hinged on the top of the movable frame through a movable block, and a second connecting rod is hinged on the top of the fixed frame, one end of the second connecting rod is hinged to an installation angle plate through a short connecting rod, and the installation angle plate is located on the inner side of the outer door.

[0009] Preferably, the test box body includes a vibration base, and the vibration base is located below the test box body, a temperature and humidity regulating chamber is provided inside the test box body, and a temperature and humidity control device is installed inside the temperature and humidity regulating chamber, an inner cavity is provided inside the temperature and humidity regulating chamber, and the inner door assembly is installed inside the inner cavity.

[0010] Preferably, the top and bottom ends of the first inner door and the second inner door are both connected with displacement wheels, and the displacement wheels are located inside the track for movement, and the outer sides of the first inner door and the second inner door are both connected with sealing layers.

[0011] Preferably, a hinge rod is hinged above a group of displacement wheels at the bottom end of the first inner door, and the other end of the hinge rod is hinged to a carrying plate, the carrying plate is located on one side below the motor, the track includes a transverse portion and an inclined portion, and the transverse portion and the inclined portion are connected at the end, the inclined portion is located on one side of the transverse portion, the lower teeth are located below the inclined portion, the motor passes through the inclined portion and extends to below it, the motor is located inside the inclined portion and moves, a group of displacement wheels at the bottom end of the second inner door is hinged to a short plate, and the other end of the short plate is hinged to the carrying plate.

[0012] Preferably, a through groove is provided on one side of the transverse portion and the inclined portion, the rack moves inside the through groove, and the first transmission gear is located on the front side of the track, the bottom end of the first transmission gear is connected to a universal chain, and one end of the universal chain is connected to the second transmission gear, and a shaft is provided on one side of the second transmission gear, and the shaft is connected to the pinion.

[0013] Preferably, a circular hole is opened inside the large gear, and a plurality of groups of equidistant inner spacers are provided on the inner wall of the circular hole, gaps are provided between the plurality of groups of equidistant inner spacers, and the ball is located in the gap, the ball is located on the side of the inner block, and a spring is connected to the end of the ball, one end of the spring is located inside the inner block, and the ball passes through the inner block and extends to its outside.

[0014] Preferably, one end of the inner clamping block is connected to a push-pull handle, and the end of the inner clamping block away from the push-pull handle is connected to a long shaft gear, a through shaft extends through the long shaft gear, and one side of the output gear is connected to the transmission wheel through the shaft.

[0015] Preferably, one side of the transmission wheel is connected with a raised rod, and the number of the raised rods is multiple groups, and the multiple groups of raised rods are distributed in an arc-shaped structure. The inner side of the movable frame is connected with multiple groups of internal teeth, and the internal teeth are meshed with the raised rods, and the movable frame moves inside the fixed frame.

[0016] Preferably, a sliding groove is provided at the top of the fixed frame, and the movable block moves inside the sliding groove. The bottom end of the movable block is connected to the movable frame, and the top end of the movable block is hinged to the first connecting rod, and the other end of the first connecting rod is hinged to the mounting angle plate, and a rotating shaft is provided at the intersection of the first connecting rod and the second connecting rod.

[0017] Preferably, one end of the second connecting rod is hinged to the short connecting rod, and one end of the short connecting rod is hinged to the mounting angle plate, the mounting angle plate and the outer door are detachably connected, and the outer door rotates at the opening of the test box body, a sealing structure is connected to the inner side of the outer door, and a device lock is provided on one side of the outer door.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: First, the present invention realizes that the device is provided with two sets of inner and outer sealing doors through the inner door assembly, linkage assembly and outer door to block the pressure generated by the water injection experiment. The structure of the two layers of sealing doors can also make the device more airtight. When opening and closing, a linkage can be generated between the inner door assembly and the outer door. When the inner door assembly is closed, the outer door is also driven to close. In this way, there is no need to close the two doors manually, making the operation of the device more convenient. In addition, the inner door assembly is a movable door, and the outer door is a rotating door. The different closing methods enhance the pressure resistance of the experiment to a certain extent, making the use of the device better.

[0019] Secondly, the present invention realizes that whether the inner door assembly and the outer door are linked is adjusted through the adjustment assembly. If the experiment does not require very strong sealing and pressure resistance, one of the doors can be opened separately, and there is no need to open and close both doors at the same time. It can be adjusted according to the needs of the experimental process, and the flexibility of the device is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at A; Figure 4 This is a schematic diagram of the inner and outer door connection structure of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the inner door assembly of the present invention; Figure 6 It is a partial exploded view of the inner door assembly and the adjustment assembly of the present invention; Figure 7 This is a schematic diagram of the connection structure of the adjustment component of the present invention; Figure 8 This is a schematic diagram of the split structure of the regulating component of the present invention; Fig. 9 This is a schematic diagram of the outer door connection structure of the present invention; Fig.10 It is a schematic diagram of the local connection structure of the linkage assembly of the present invention; Fig.11 It is a schematic diagram of the connecting rod connection structure of the present invention.

[0021] Wherein: 1. Test chamber body; 101. Vibration base; 102. Temperature and humidity adjustment chamber; 103. Inner chamber; 2. Inner door assembly; 201. First inner door; 2011. Displacement wheel; 2012. Articulated rod; 2013. Rack; 202. Second inner door; 203. Track; 2031. Horizontal part; 2032. Inclined part; 204. Lower teeth; 205. Lower gear; 206. Motor; 2061. Carrying plate; 207. First transmission gear; 208. Universal chain; 209. Second transmission gear Wheel; 3. Adjustment assembly; 301. Small gear; 302. Large gear; 3021. Inner spacer; 303. Inner clamping block; 3031. Ball; 3032. Spring; 304. Push-pull handle; 305. Long shaft gear; 306. Output gear; 4. Linkage assembly; 401. Drive wheel; 402. Fixed frame; 403. Moving frame; 4031. Inner teeth; 404. Moving block; 405. First connecting rod; 406. Second connecting rod; 407. Short connecting rod; 408. Install angle plate; 5. External door. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 , 2 , 3, 4 and Figure 5 A double-layer sealed door for a three-integrated test box includes a test box body 1, a movable inner door assembly 2 is arranged inside the test box body 1, the inner door assembly 2 includes a first inner door 201 and a second inner door 202, and the upper and lower ends of the first inner door 201 and the second inner door 202 are both located inside a track 203 for movement, a lower tooth 204 is arranged below one side of the track 203, and one side of the lower tooth 204 engages with a lower gear 205, a motor 206 is installed on the lower gear 205, a rack 2013 is connected to one side below the first inner door 201, and one side of the rack 2013 engages with a first transmission gear 207, and the first transmission gear 207 is connected to a second transmission gear 209 located on one side of the adjustment assembly 3 through a universal chain 208.

[0024] In this embodiment, the track 203 can be located below the bottom plate of the inner cavity 103, or above the bottom plate of the inner cavity 103. Since the track 203 has a protrusion if it is located above the bottom plate of the inner cavity 103, some objects to be tested cannot be pushed in when they are placed in, but are put in empty. If the track 203 is located below the bottom plate, the objects to be tested can be pushed in or put in empty. It is determined whether the track 203 located below is set above the bottom plate of the inner cavity 103 or below the bottom plate of the inner cavity 103 according to actual detection needs. In actual use, the state of opening the outer door 5 corresponds to When the second inner door 202 and the first inner door 201 are in a stored state, the first inner door 201 and the second inner door 202 will be stored on one side of the inner cavity 103 according to the setting trajectory of the inclined portion 2032, thereby reducing the floor space without affecting the placement of the object to be tested into the inner cavity 103. In the present invention, when the outer door 5 is opened, the first inner door 201 and the second inner door 202 are in a stored state. Compared with the inner and outer sets of doors controlled by separate hinges, there is no need to control the door separately to avoid the rotation of the opened door when the object to be tested is placed. A controller is installed in the device to facilitate direct control of the opening of the door.

[0025] Specifically, the test box body 1 includes a vibration base 101, and the vibration base 101 is located below the test box body 1, a temperature and humidity adjustment chamber 102 is provided on the inner side of the test box body 1, and a temperature and humidity control device is installed inside the temperature and humidity adjustment chamber 102, an inner cavity 103 is provided on the inner side of the temperature and humidity adjustment chamber 102, and the inner door assembly 2 is installed inside the inner cavity 103.

[0026] In this embodiment, when it is necessary to detect the vibration state, the vibration base 101 below can be started, so that the device can be detected by the vibration base 101 when it is placed inside the inner cavity 103. A temperature and humidity control panel is installed on the outside of the outer door 5, and the opening of the temperature and humidity control device inside the temperature and humidity adjustment cavity 102 can be controlled from the outside. A flow duct is set between the temperature and humidity adjustment cavity 102 and the inner cavity 103 to facilitate the entry of air with a certain temperature and humidity into the inner cavity 103. An exhaust device is also set on the inner cavity 103 to facilitate the completion of the experiment. The air in the inner cavity 103 is then discharged. In order to allow the water injection experiment to be carried out in the inner cavity 103, a water injection and drainage structure is correspondingly set up inside the inner cavity 103. When conducting the water injection experiment, the sealing properties of the first inner door 201, the second inner door 202 track 203 and the inner wall of the inner cavity 103 meet the requirements of the water injection experiment. The first inner door 201 and the second inner door 202 also meet the pressure resistance of the water injection experiment. The outer door 5 on the outside also has good sealing and pressure resistance. Therefore, the cooperation between the inner door assembly 2 and the outer door 5 can make the detection effect better.

[0027] Specifically, the top and bottom ends of the first inner door 201 and the second inner door 202 are both connected with displacement wheels 2011 , and the displacement wheels 2011 are located inside the track 203 for movement, and the outer sides of the first inner door 201 and the second inner door 202 are both connected with sealing layers.

[0028] In this embodiment, when the first inner door 201 and the second inner door 202 are moving, the displacement wheel 2011 located in the track 203 below can only move but not rotate, and the displacement wheel 2011 above can move and rotate in the track 203 above. The track 203 is provided above and below so that the first inner door 201 and the second inner door 202 can be moved better. In this embodiment, the rack 2013 needs to move with the displacement wheel 2011, so the rack 2013 needs to pass through the inclined portion 2032 and the inclined portion 2032. At the connection point of the transverse portion 2031, the rack 2013 can be a structure in which multiple groups of shorter racks are connected by a rotating shaft, similar to a chain. It can drive the first transmission gear 207 to rotate while passing through the inflection point, and when pushed, it will also move along the trajectory set by the track 203. In addition, the rack 2013 can also be a shorter rack, and the inflection point angle between the transverse portion 2031 and the inclined portion 2032 is set larger. The rack 2013 can pass through while driving the first transmission gear 207 to rotate so that the outer door 5 is opened or closed.

[0029] Specifically, a hinge rod 2012 is hinged above a group of displacement wheels 2011 at the bottom end of the first inner door 201, and the other end of the hinge rod 2012 is hinged on the carrying plate 2061, and the carrying plate 2061 is located on one side below the motor 206, the track 203 includes a transverse portion 2031 and an inclined portion 2032, and the transverse portion 2031 and the inclined portion 2032 are connected at the end, the inclined portion 2032 is located on one side of the transverse portion 2031, the lower teeth 204 are located below the inclined portion 2032, the motor 206 passes through the inclined portion 2032 and extends to below it, the motor 206 is located inside the inclined portion 2032 and moves, and a group of displacement wheels 2011 at the bottom end of the second inner door 202 is hinged with a short plate, and the other end of the short plate is hinged on the carrying plate 2061.

[0030] In this embodiment, since a water injection experiment is required, the motor 206 is required to be a waterproof motor. The power for driving the inner door assembly 2 and the outer door 5 to open and close is the motor 206. The motor 206 drives the lower gear 205 to rotate and moves inside the inclined portion 2032. The displacement wheels 2011 under the first inner door 201 and the second inner door 202 are pushed to move through the support plate 2061 and the short plate, thereby moving the two groups of inner doors. The controller that controls the opening and closing of the motor 206 can be connected to the control panel on the outside of the outer door 5, so that the opening of the two groups of doors can be controlled from the outside, which is convenient for operation.

[0031] Specifically, a through groove is provided on one side of the transverse portion 2031 and the inclined portion 2032, the rack 2013 moves inside the through groove, and the first transmission gear 207 is located on the front side of the track 203, the bottom end of the first transmission gear 207 is connected to a universal chain 208, and one end of the universal chain 208 is connected to a second transmission gear 209, a shaft is provided on one side of the second transmission gear 209, and the shaft is connected to the pinion 301.

[0032] In this embodiment, the setting position of the first transmission gear 207 can be on one side inside the inner cavity 103, away from the center point, so that when the object to be detected is placed, the influence of the position of the first transmission gear 207, the adjustment component 3 and the linkage component 4 on the object to be detected will be reduced. The first transmission gear 207 changes the transmission direction through the setting of the universal chain 208, so as to better connect with the adjustment component 3, and transmit the rotation action to the linkage component 4 through the adjustment component 3.

[0033] See also Figure 6 , 7 , 8, 9, 10 and Fig.11 A double-layer sealed door for a three-integrated test box, wherein a linkage assembly 4 is linked to the lower front side of an inner door assembly 2 through an adjustment assembly 3, an outer door 5 is arranged on one side of the linkage assembly 4, the adjustment assembly 3 comprises a large gear 302 and a small gear 301 meshing with each other, and an inner clamping block 303 which can penetrate and move is arranged inside the large gear 302, a long axis gear 305 is arranged on one side of the inner clamping block 303, and an output gear 306 meshing with the long axis gear 305 is arranged on one side, one end of the output gear 306 is connected to a transmission wheel 401, a fixed fixed frame 402 and a moving frame 403 which moves inside the fixed frame 402 are arranged on the outer side of the transmission wheel 401, a first connecting rod 405 is hinged on the top of the moving frame 403 through a moving block 404, and a second connecting rod 406 is hinged on the top of the fixed frame 402, one end of the second connecting rod 406 is hinged to an installation angle plate 408 through a short connecting rod 407, and the installation angle plate 408 is located on the inner side of the outer door 5.

[0034] In this embodiment, a shell is commonly provided on the outer sides of the pinion 301, the large gear 302, the inner block 303, the push-pull handle 304, the long shaft gear 305, and the output gear 306. The push-pull handle 304 passes through the shell and extends to the outer side thereof. The shafts of the output gear 306 and the long shaft gear 305 pass through the shell and extend to the outer side thereof. A positioning structure is provided on one side of the shell above the push-pull handle 304, which cooperates with the push-pull handle 304 and positions the push-pull handle 304 when it is pulled or pushed to maintain its position. For example, a ball bearing can be arranged on the outside of the push-pull handle 304, and a baffle plate can be arranged above the push-pull handle 304 and on the outside of the shell. Rubber protrusions are arranged inside the baffle plate, and the number of protrusions is at least two groups. When the push-pull handle 304 is pulled, the ball bearing will be stuck between the two groups of protrusions to form a relative fixation. If the inner clamping block 303 rotates with the large gear 302 to drive the push-pull handle 304 to rotate, the ball bearing will also rotate between the two groups of protrusions with the push-pull handle 304. The positioning structure can also be other common structures.

[0035] Specifically, a circular hole is opened inside the large gear 302, and a plurality of groups of equidistant inner spacers 3021 are arranged on the inner wall of the circular hole, gaps are arranged between the plurality of groups of equidistant inner spacers 3021, and the ball 3031 is located in the gap, the ball 3031 is located on the side of the inner block 303, and the end of the ball 3031 is connected to a spring 3032, one end of the spring 3032 is located inside the inner block 303, and the ball 3031 passes through the inner block 303 and extends to its outside.

[0036] In this embodiment, a baffle is provided inside the shell. When the push-pull handle 304 is pulled out, the inner block 303 will be disengaged from the inside of the large gear 302. At this time, the ball 3031 should pop out under the action of the spring 3032, but it cannot pop out due to the existence of the baffle, and the ball 3031 will not extend too much. In this way, when the push-pull handle 304 is pushed, the ball 3031 can be easily entered into the inside of the large gear 302.

[0037] Specifically, one end of the inner clamping block 303 is connected to the push-pull handle 304, and the end of the inner clamping block 303 away from the push-pull handle 304 is connected to the long shaft gear 305, a through shaft extends through the long shaft gear 305, and one side of the output gear 306 is connected to the transmission wheel 401 through the shaft.

[0038] In this embodiment, when the push-pull handle 304 is pushed, the large gear 302 rotates. Due to the protrusion of the ball 3031 inside, the rotation will drive the inner block 303 to rotate together, thereby driving the long axis gear 305 to rotate together. When the push-pull handle 304 is pulled back, the inside of the large gear 302 loses the connected protrusion, so it will not drive the inner block 303 to rotate. As the inner block 303 moves, the long axis gear 305 enters the internal circular groove of the large gear 302. The size of the long axis gear 305 will not interfere with the rotation of the large gear 302. The position of gear 305 moves, and the output gear 306 loses the meshing relationship with the long shaft gear 305, so the output gear 306 will not rotate, and the push-pull handle 304 will not rotate. At this time, the opening and closing of the inner door assembly 2 will not affect the outer door 5. An observation glass can be opened on the first inner door 201 and the second inner door 202 or the outer door 5. It is difficult to see clearly through the observation glass when the two sets of doors are closed at the same time. Therefore, if the detection process does not require a strict sealing effect and double pressure resistance, the outer door can be opened and the inner door can be closed, and the internal experimental conditions can be observed through the observation glass on the inner door.

[0039] Specifically, a raised rod is connected to one side of the transmission wheel 401, and the number of the raised rods is multiple groups, and the multiple groups of raised rods are distributed in an arc-shaped structure. The inner side of the movable frame 403 is connected to multiple groups of internal teeth 4031, and the internal teeth 4031 are meshed with the raised rods, and the movable frame 403 moves inside the fixed frame 402.

[0040] In this embodiment, the fixed frame 402 is fixedly set on one side of the inner cavity 103, a slide groove is set inside the fixed frame 402, and a slider matching the slide groove is set on the outer side of the movable frame 403. The slide groove and the slider can enable the movable frame 403 to slide better inside the fixed frame 402, and one movement opening and closing of the first inner door 201 satisfies one rotation opening and closing of the outer door 5.

[0041] Specifically, a sliding groove is provided at the top of the fixed frame 402, and the movable block 404 moves inside the sliding groove. The bottom end of the movable block 404 is connected to the movable frame 403, and the top end of the movable block 404 is hinged to the first connecting rod 405. The other end of the first connecting rod 405 is hinged to the mounting angle plate 408, and a rotating shaft is provided at the intersection of the first connecting rod 405 and the second connecting rod 406.

[0042] In this embodiment, the connecting rod and the mounting angle plate 408 can be provided in two groups, connected to the upper and lower ends of the inner side of the outer door 5. The lower connecting rod drives and the upper connecting rod assists in cooperating, so that the outer door 5 can rotate more smoothly. Since the outer door 5 has a certain thickness and weight, the connecting rod and the mounting angle plate 408 can be made of metal material with strong compressive resistance to extend the service life of the device.

[0043] Specifically, one end of the second connecting rod 406 is hinged to the short connecting rod 407, and one end of the short connecting rod 407 is hinged to the mounting angle plate 408. The mounting angle plate 408 and the outer door 5 are detachably connected, and the outer door 5 rotates at the opening of the test box body 1. A sealing structure is connected to the inner side of the outer door 5, and a device lock is provided on one side of the outer door 5.

[0044] In this embodiment, a sealing structure is provided at the connection between the outer door 5 and the test box body 1 to further enhance the sealing effect. After the outer door 5 is closed, the outer device lock can adopt a manually closed lock structure or an electronic lock structure for automatic closing. The lock used on the outer door 5 needs to meet a certain sealing effect.

[0045] When in use, it is necessary to connect an external power supply, which provides electrical energy for the device so that the device can withstand pressure and operate normally. First, it can be determined whether the inner door assembly 2 and the outer door 5 need to be opened and closed at the same time according to the needs of the experiment. If the inner door assembly 2 and the outer door 5 need to be opened and closed at the same time, the push-pull handle 304 can be pushed to make the inner block 303 enter the inside of the large gear 302. The ball 3031 protrudes to the outside of the inner block 303 under the action of the spring 3032, and is located in the gap between the multiple groups of inner spacer blocks 3021. In this way, when the large gear 302 is driven by the small gear 301 to rotate, it will simultaneously drive the inner block 303 and the long shaft gear 305 to rotate, so as to achieve the purpose of driving the output gear 306 and the transmission wheel 401 to rotate. This process can realize the simultaneous opening and closing of the inner door assembly 2 and the outer door 5, specifically: When the inner door assembly 2 and the outer door 5 are closed, the motor 206 is started, so that the motor 206 drives the lower gear 205 to rotate, and the lower gear 205 meshes with the lower teeth 204. Therefore, when the lower gear 205 rotates, it will also drive the motor 206 to move along the trajectory of the inclined portion 2032, and the support plate 2061 moves with the motor 206. The short plate and the hinge rod 2012 hinged on the support plate 2061 will push the displacement wheel 2011 connected thereto to move, so that the first inner door 201 and the second inner door 202 move in the track 203, and the first inner door 201 and the second inner door 202 move from the inclined portion 2032 to the transverse portion 2031. During the movement, the rack 2013 also moves with it. When the rack 2013 moves in the slide groove of the transverse portion 2031, it contacts and meshes with the first transmission gear 207, thereby driving the first transmission gear The wheel 207 rotates, and the rotation of the first transmission gear 207 is transmitted to the second transmission gear 209 through the universal chain 208, so that the second transmission gear 209 drives the small gear 301 to rotate through the shaft, and the small gear 301 drives the large gear 302 meshing with it to rotate, and the rotation of the large gear 302 drives the long shaft gear 305 to rotate, so that the output gear 306 drives the transmission wheel 401 to rotate, and the rotation of the transmission wheel 401 will drive the moving frame 403 to move as a whole inside the fixed frame 402 due to the meshing of the outer protruding rod and the inner teeth 4031, and the moving frame 403 drives the moving block 404 to move, so that the first connecting rod 405 pulls the installation angle plate 408, and pulls the outer door 5 under the cooperation of the second connecting rod 406 and the short connecting rod 407, so that the outer door 5 is closed on one side of the test box body 1, and the inner door assembly 2 is closed synchronously; If there is no need to open and close the inner door assembly 2 and the outer door 5 at the same time, the push-pull handle 304 can be pulled outward, so that the push-pull handle 304 drives the inner clamping block 303 to move out of the large gear 302. In this way, when the large gear 302 rotates, it will not drive the inner clamping block 303 to rotate, and it will not drive the long shaft gear 305 to rotate. The output gear 306 and the transmission wheel 401 cannot rotate, and the outer door 5 cannot be pulled by moving the connecting rod, and thus the synchronous opening and closing of the inner door assembly 2 and the outer door 5 cannot be achieved. The inner door assembly 2 and the outer door 5 are driven to open and close separately, which is suitable for use in experiments where special sealing is not required.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-layer sealed door for a three-in-one test box, comprising a test box body (1), characterized in that: A movable inner door assembly (2) is arranged inside the test box body (1), and a linkage assembly (4) is linked to the lower part of the front side of the inner door assembly (2) through an adjustment assembly (3), and an outer door (5) is arranged on one side of the linkage assembly (4); The inner door assembly (2) comprises a first inner door (201) and a second inner door (202), and the upper and lower ends of the first inner door (201) and the second inner door (202) are both located inside a track (203) for movement, a lower tooth (204) is provided below one side of the track (203), and one side of the lower tooth (204) meshes with a lower gear (205), and a motor (206) is installed on the lower gear (205), a rack (2013) is connected to one side below the first inner door (201), and one side of the rack (2013) meshes with a first transmission gear (207), and the first transmission gear (207) is connected to a second transmission gear (209) located on one side of the adjustment assembly (3) via a universal chain (208); The adjustment assembly (3) comprises a large gear (302) and a small gear (301) meshing with each other, and an inner clamping block (303) is provided inside the large gear (302) and can penetrate and move, a long shaft gear (305) is provided on one side of the inner clamping block (303), and an output gear (306) meshing with the long shaft gear (305) is provided on one side of the long shaft gear (305), and one end of the output gear (306) is connected to the transmission wheel (401); A fixed frame (402) and a movable frame (403) located inside the fixed frame (402) and movable are arranged outside the driving wheel (401); a first connecting rod (405) is hingedly connected above the movable frame (403) via a movable block (404); a second connecting rod (406) is hingedly connected to the top of the fixed frame (402); one end of the second connecting rod (406) is hingedly connected to a mounting angle plate (408) via a short connecting rod (407); and the mounting angle plate (408) is located inside the outer door (5).

2. The double-layer sealed door for a three-in-one test box according to claim 1 is characterized in that: The test box body (1) comprises a vibration base (101), and the vibration base (101) is located below the test box body (1); a temperature and humidity adjustment chamber (102) is arranged inside the test box body (1), and a temperature and humidity control device is installed inside the temperature and humidity adjustment chamber (102); an inner cavity (103) is arranged inside the temperature and humidity adjustment chamber (102), and the inner door assembly (2) is installed inside the inner cavity (103).

3. The double-layer sealed door for a three-in-one test box according to claim 2 is characterized in that: The top and bottom ends of the first inner door (201) and the second inner door (202) are both connected to displacement wheels (2011), and the displacement wheels (2011) are located inside the track (203) for movement, and the outer sides of the first inner door (201) and the second inner door (202) are both connected to sealing layers.

4. The double-layer sealed door for a three-integrated test box according to claim 1 is characterized in that: A hinge rod (2012) is hinged above a set of displacement wheels (2011) at the bottom end of the first inner door (201), and the other end of the hinge rod (2012) is hinged on a support plate (2061), and the support plate (2061) is located on one side below the motor (206), and the track (203) includes a transverse portion (2031) and an inclined portion (2032), and the ends of the transverse portion (2031) and the inclined portion (2032) are connected, and the inclined portion (2032) is connected to the support plate (2061). The portion (2032) is located on one side of the transverse portion (2031), the lower teeth (204) are located below the inclined portion (2032), the motor (206) passes through the inclined portion (2032) and extends below it, the motor (206) is located inside the inclined portion (2032) and moves, and a group of displacement wheels (2011) at the bottom end of the second inner door (202) are hinged to a short plate, and the other end of the short plate is hinged to the support plate (2061).

5. The double-layer sealed door for a three-in-one test box according to claim 4, characterized in that: A through groove is provided on one side of the transverse portion (2031) and the inclined portion (2032), the rack (2013) moves inside the through groove, and the first transmission gear (207) is located at the front side of the track (203), the bottom end of the first transmission gear (207) is connected to a universal chain (208), and one end of the universal chain (208) is connected to a second transmission gear (209), and a shaft is provided on one side of the second transmission gear (209), and the shaft is connected to the pinion (301).

6. The double-layer sealed door for a three-integrated test box according to claim 5, characterized in that: A circular hole is provided inside the large gear (302), and a plurality of groups of equidistant inner spacers (3021) are provided on the inner wall of the circular hole. Gaps are provided between the plurality of groups of equidistant inner spacers (3021), and a ball (3031) is located in the gap. The ball (3031) is located on the side of the inner clamping block (303), and a spring (3032) is connected to the end of the ball (3031). One end of the spring (3032) is located inside the inner clamping block (303), and the ball (3031) passes through the inner clamping block (303) and extends to the outside thereof.

7. The double-layer sealed door for a three-integrated test box according to claim 6, characterized in that: One end of the inner clamping block (303) is connected to a push-pull handle (304), and one end of the inner clamping block (303) away from the push-pull handle (304) is connected to a long shaft gear (305), a through shaft extending through the long shaft gear (305), and one side of the output gear (306) is connected to the transmission wheel (401) via the shaft.

8. The double-layer sealed door for a three-in-one test box according to claim 1, characterized in that: One side of the transmission wheel (401) is connected to a plurality of raised rods, and the plurality of raised rods are distributed in an arc-shaped structure. The inner side of the movable frame (403) is connected to a plurality of groups of inner teeth (4031), and the inner teeth (4031) are meshed with the raised rods. The movable frame (403) moves inside the fixed frame (402).

9. The double-layer sealed door for a three-integrated test box according to claim 8, characterized in that: A sliding groove is provided at the top of the fixed frame (402), and the movable block (404) moves inside the sliding groove. The bottom end of the movable block (404) is connected to the movable frame (403), and the top end of the movable block (404) is hinged to the first connecting rod (405). The other end of the first connecting rod (405) is hinged to the mounting angle plate (408), and a rotating shaft is provided at the intersection of the first connecting rod (405) and the second connecting rod (406).

10. The double-layer sealed door for a three-in-one test box according to claim 9, characterized in that: One end of the second connecting rod (406) is hinged to the short connecting rod (407), and one end of the short connecting rod (407) is hinged to the mounting angle plate (408). The mounting angle plate (408) is detachably connected to the outer door (5), and the outer door (5) rotates at the opening of the test box body (1). A sealing structure is connected to the inner side of the outer door (5), and a device lock is provided on one side of the outer door (5).

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