Ambient temperature test box and loading disc structure thereof
By designing a combination mechanism of the carrier disk structure in the ambient temperature test chamber, an independent test chamber is formed and the use of limit rods and airbags to prevent debris collisions, the problem of bursting glass products in high and low temperature tests is solved, reducing test errors and improving tests security and accuracy.
Patent Information
- Application Number
- CN202411355941.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-01-07
AI Technical Summary
In high and low temperature cycle tests, glass products are prone to burst due to temperature changes, and glass products that are prone to explode may cause bursting of other unexploded glass products during the test, resulting in test errors.
A disk-carrying structure of an ambient temperature test chamber is designed, through the combination of left and right plates, front and rear plates and connecting plates, an independent test chamber is formed, and the limit rod and airbag mechanism are used to prevent the fragments of the explosive items from colliding with other items to be tested. Adjust the breathable groove and through holes through the spring and sliding grooves to heat evenly and prevent debris from scattering.
It effectively reduces the dispersion and debris of easily exploded items during the test, avoids test errors, and improves the safety and accuracy of the test.
Smart Images
Figure CN119259128A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of carrier plates, and in particular relates to an environmental temperature test box and a carrier plate structure thereof. Background Art
[0002] Temperature test chamber is an essential environmental testing equipment for high temperature, low temperature, constant high and low temperature or alternating tests on complete electronic and electrical products, parts and new materials. It is used to test the environmental adaptability, reliability and safety of electronic and electrical products, parts and new materials under constant or changing temperature or temperature and humidity conditions. It is widely used in environmental adaptability tests, reliability and safety tests on new products, new materials and new processes in the fields of aerospace, national defense and military industry, electronic and electrical appliances.
[0003] During the test, the test sample is placed in the working area of the test chamber. Due to the need for high temperature, low temperature and rapid temperature change, the inner liner and the outer shell of the test chamber need to be insulated by thermal insulation materials. The thickness of the thermal insulation layer is related to the temperature range of the test chamber. At the same time, in order to facilitate observation or install video and photography equipment from the outside, the door of the temperature test chamber is generally equipped with a glass window.
[0004] There are many kinds of test samples, including glass products, such as glass cups. When conducting high and low temperature cycle tests, if the test conditions are not set properly, such as the temperature change rate is too fast or the temperature extreme value exceeds the tolerance range of the glass, it may cause the glass to burst. In addition, different types of glass materials have different sensitivities to temperature changes. Some special glass materials may be more sensitive to temperature changes and more likely to burst in high and low temperature tests. If one of the multiple glass products bursts during the test, other glass products are easily impacted by the fragments of the burst glass product and burst under collision, which will cause errors in the test, so it needs to be improved. Summary of the invention
[0005] The purpose of the present invention is to provide an environmental temperature test box and a carrier plate structure thereof, so as to solve the problems existing in the background technology.
[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:
[0007] A loading plate structure for an environmental temperature test chamber comprises a placement plate, a sliding groove is provided at the lower end of the placement plate, a ventilation groove is provided through the middle of the placement plate, a rectangular groove is provided in the middle of the placement plate, left and right plates are symmetrically hingedly connected to the rectangular groove, front and rear plates matching the two left and right plates are symmetrically hingedly connected to the front and rear sides of the placement plate, limiting openings are provided on both sides of the two front and rear plates, a connecting plate matching the rectangular groove is connected between the two left and right plates, a plurality of rotating grooves are provided through the connecting plate, and limiting rods are rotatably connected inside the plurality of rotating grooves, and the plurality of limiting rods match the distance between the two left and right plates, and through holes are provided on the left and right plates and the front and rear plates.
[0008] A sliding groove is provided inside the placement plate, and an adjustment plate is symmetrically slidably connected to the sliding groove. A plurality of first springs are installed between the sliding groove and the side of the two adjustment plates away from each other. A plurality of adjustment grooves are provided through the two adjustment plates. Push blocks are fixedly installed on the side of the two left and right plates close to each other, and matching grooves matching the push blocks are provided on the two adjustment plates.
[0009] The rotating groove is installed with a limit column, the limit rod is rotatably connected to the outside of the limit column, the limit column is fixedly connected with a protrusion matching the limit rod, the limit rod is provided with a plurality of grooves matching the protrusions, the limit column at the lowermost side is fixedly connected with a cross seat, the placement plate is provided with a matching installation groove, and both the left and right plates are provided with limit grooves matching the limit column.
[0010] An environmental temperature test chamber comprises a test chamber body, wherein the test chamber body comprises a test chamber, an air inlet, a drain outlet and an exhaust outlet, a door is sealedly installed at the front end of the test chamber, L-shaped hanging plates matching a slide groove are symmetrically installed inside the test chamber, an explosion-proof net is installed at the window of the door, and a connecting component is installed between the carrier structure and the explosion-proof net.
[0011] The connecting assembly includes a plurality of connecting columns fixedly connected to the explosion-proof net, each horizontal row of the connecting columns matches the position of the L-shaped hanging plate and the placement plate, an L-shaped mounting groove is provided at the front end of the placement plate, a horizontal plate is slidably connected inside the L-shaped mounting groove, a second spring is installed on the lower side of the horizontal plate, a first high-temperature resistant airbag is installed on the upper side of the horizontal plate, a first plug block is installed at the lower end of the horizontal plate, and a slot matching the first plug block is provided on the connecting column.
[0012] A step groove is provided on the connecting column near the test chamber side, a second high temperature resistant airbag is installed inside the step groove, a T-shaped block is slidably connected inside the step groove, a third spring is installed between the T-shaped plate and the step groove, and a limiting hole matching the T-shaped block is provided on the test chamber.
[0013] The hatch is provided with an empty slot connected to the step slot, a gear set is rotatably installed inside the empty slot, a rack meshing with the gear set is fixedly installed on the T-shaped block, a winding wheel is installed on the output end of the gear set, the hatch is slidingly connected to an elastically sliding connection with a warning rod, and a pull rope is installed between the winding wheel and the warning rod.
[0014] A liquid flow assembly is installed at the upper end of the test chamber, and the liquid flow assembly includes a water tank connected to the drain port. A liquid infusion tube is installed at the upper end of the test chamber, and an L-shaped liquid flow tube is rotatably installed on the liquid infusion tube. A nozzle is installed at the end of the L-shaped liquid flow tube, and the L-shaped liquid flow tube is installed with a rotating part.
[0015] The present invention can match different test objects in different test environments through the combination of left and right plates, front and rear plates and connecting plates, and can also reduce the scattering of easily exploded objects during the test, and also avoid the exploded objects flying out and colliding with other objects to be tested to cause test errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.
[0017] Figure 1 It is a first schematic diagram of a carrier structure of an environmental temperature test box of the present invention;
[0018] Figure 2 A second schematic diagram of a carrier structure of an environmental temperature test box of the present invention;
[0019] Figure 3 It is a partial structural schematic diagram of a carrier structure of an environmental temperature test box of the present invention;
[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;
[0021] Figure 5 It is a cross-sectional structural schematic diagram of a carrier structure of an environmental temperature test box of the present invention;
[0022] Figure 6 It is a structural schematic diagram of an environmental temperature test box of the present invention;
[0023] Figure 7 It is a schematic diagram of a first partial structure of an environmental temperature test box of the present invention;
[0024] Figure 8 This is a schematic diagram of a first cross-sectional structure of an environmental temperature test chamber of the present invention;
[0025] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at B in the middle;
[0026] Fig.10 It is a schematic diagram of a second cross-sectional structure of an environmental temperature test box of the present invention;
[0027] Fig.11 for Fig.10 Schematic diagram of the enlarged structure at C in the middle;
[0028] Fig.12 It is a third cross-sectional structural schematic diagram of an environmental temperature test box of the present invention;
[0029] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at D in the middle.
[0030] The main component symbols are described as follows:
[0031] Test box body 1, test cabin 11, air inlet 12, hatch 13, L-shaped hanging plate 14, explosion-proof net 15, placement plate 20, rectangular groove 21, left and right plates 22, front and rear plates 23, limit opening 24, connecting plate 25, limit rod 26, adjustment plate 27, first spring 28, push block 29, matching groove 30, limit column 31, protrusion 32, groove 33, cross seat 34, connecting column 35, cross plate 36, second spring 37, first high temperature resistant airbag 38, first plug block 39, second high temperature resistant airbag 40, T-shaped block 41, third spring 42, gear set 43, rack 44, winding wheel 45, warning rod 46, pull rope 47, water tank 50, infusion tube 51, L-shaped liquid tube 52, and nozzle 53. DETAILED DESCRIPTION
[0032] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0033] Example 1: Figure 1-11 As shown, a loading plate structure of an environmental temperature test box of the present invention includes a placing plate 20, a sliding groove is opened at the lower end of the placing plate 20, a ventilation groove is opened through the middle of the placing plate 20, a rectangular groove 21 is opened in the middle of the placing plate 20, the rectangular groove 21 is symmetrically hinged with left and right plates 22, the front and rear sides of the placing plate 20 are symmetrically hinged with front and rear plates 23 matching the two left and right plates 22, limiting openings 24 are opened on both sides of the two front and rear plates 23, a connecting plate 25 matching the rectangular groove 21 is connected between the two left and right plates 22, a plurality of rotating grooves are opened through the connecting plate 25, and the limiting rods 26 are rotatably connected inside the plurality of rotating grooves, and the plurality of limiting rods 26 match the distance between the two left and right plates 22, and the left and right plates 22 and the front and rear plates 23 are all opened with through holes.
[0034] All components are made of high and low temperature resistant materials.
[0035] In the initial state, the two left and right plates 22 are placed in parallel inside the rectangular groove 21, and the connecting plate 25 is placed between the two left and right plates 22 and laid flat inside the rectangular groove 21, and the two front and rear plates 23 are also parallel to the placement plate 20, so that the two left and right plates 22, the two front and rear plates 23 and the connecting plate 25 are in the same plane, forming a carrier in a flat state. At this time, the through hole is aligned and connected with the air permeable groove, and the gas can be transported from bottom to top through the air permeable groove to the test object placed on the upper end of the left and right plates 22 and the connecting plate 25, so that the test object is in a simulated specific environment for testing;
[0036] When it is necessary to place several fragile glass articles, the tray structure is taken out and the left and right plates 22 are driven to rotate to a vertical state and abut against the side walls of the rectangular groove 21. Then, the connection between the connecting plate 25 and the left and right plates 22 is released and the connecting plate 25 and the placement plate 20 are turned from parallel to perpendicular. Since the limit rod 26 is rotatably connected to the connecting plate 25, the limit rod 26 is rotated at this time to abut against the left and right plates 22. In this way, the left and right plates 22 can be kept in a vertical state after being abutted by the limit rod 26. Then, the two front and rear plates 23 are driven to rotate to be perpendicular to the placement plate 20. At this time, the tray structure is inserted into the test box and the limit port is inserted into the test box. The front and rear plates 23 are kept in a vertical state inside the hanger of the part, so that the two left and right plates 22 and the two front and rear shift plates 23 will surround the upper end of the placement plate 20 to form a rectangular groove, and the connecting plate 25 and a number of limiting rods 26 will vertically divide the rectangular groove into four equal parts, and are isolated from each other by the connecting plate 25 and a number of limiting rods 26, so that four independent test chambers can be formed to place glass cups, and then when the high and low temperature switching test causes the glass plate to burst, it can be blocked by the connecting plate 25 and a number of limiting rods 26, so as to prevent the impact force of the bursting from contacting with other glass cups, causing the glass cups that should not burst to burst and cause test errors.
[0037] A sliding groove is provided inside the placement plate 20, and an adjustment plate 27 is symmetrically slidably connected to the sliding groove. A plurality of first springs 28 are installed between the sliding groove and the side of the two adjustment plates 27 that are away from each other. A plurality of adjustment grooves are provided through the two adjustment plates 27. A push block 29 is fixedly installed on the side of the two left and right plates 22 that are close to each other. The two adjustment plates 27 are provided with matching grooves 30 that match the push blocks 29.
[0038] When the carrier structure is initially in a flat state, the push block 29 is located inside the matching groove 39, and the first spring 28 is also in a compressed state. At this time, the through hole, the adjustment groove and the ventilation groove are aligned in the maximum ventilation state. In this way, the test object can be heated faster and more evenly during the temperature test. When the left and right plates 22 rotate upward, the push block 29 will move upward, and the adjustment plate 27 will be close to each other under the rebound force of the first spring 28, so that the adjustment groove is staggered with the ventilation groove and the through hole, reducing the flux of the ventilation groove and the through hole, so that when the glass material explodes, it falls out of the carrier structure and scatters to other places, making it difficult to clean.
[0039] The rotation groove is installed with a limit column 31, and the limit rod 26 is rotatably connected to the outside of the limit column 31. The limit column 31 is fixedly connected with a protrusion 32 that matches the limit rod 26. The limit rod 26 is provided with a number of grooves 33 that match the protrusion 32. The lowermost limit column 31 is fixedly connected with a cross seat 34. The placement plate 20 is provided with a matching installation groove. Both left and right plates 22 are provided with limit grooves that match the limit column 31. The groove 33 has two sizes. One size completely matches the protrusion 32, thereby limiting the protrusion 32, while the other size of the groove 33 is larger than the size of the protrusion 32 and is arranged parallel to the connecting plate 25. In this way, when the limit rod 26 is rotated out of the rotation groove, the connecting plate 25 can be placed horizontally to make the limit rod 26 rotate out of the rotation groove under the action of gravity, which is more convenient for rotating the limit rod 26.
[0040] When the connecting plate 25 is in a vertical natural state, the limit rod 26 can be in a locked state with the cooperation of the protrusion 32 and the groove 33. At this time, the limit rod 26 is restricted and cannot rotate. When adjustment is required, the limit rod 26 is driven to move upward, so that the groove 33 withdraws from the protrusion 32, and then rotates to make the other grooves 33 insert into the inside of the protrusion 32 to adjust the rotation angle of the limit rod 26, and then the two limit rods 26 cooperate to form an angle, so that the objects that cannot be stably placed in the rectangular groove 21 are clamped or leaned on the limit rod 26, reducing the contact area between the objects and the placement plate 20, increasing the heat contact area of the objects and accelerating the heating efficiency of the objects.
[0041] The present invention can match different test objects in different test environments through the combination of left and right plates, front and rear plates and connecting plates, and can also reduce the scattering of easily exploded objects during the test, and also avoid the exploded objects flying out and colliding with other objects to be tested to cause test errors.
[0042] An environmental temperature test chamber includes a test chamber body 1, the test chamber body 1 includes a test chamber 11, an air inlet 12, a drain port and an exhaust port, a door 13 is sealed at the front end of the test chamber 11, and is characterized in that: an L-shaped hanging plate 14 matching a slide slot is symmetrically installed inside the test chamber 11, an explosion-proof net 15 is installed at the window of the door 13, and a connecting component is installed between the tray structure and the explosion-proof net 15. The placement plate 20 of the tray structure is slid into the interior of the test chamber 11, and the slide slot is matched with the L-shaped hanging plate 14, and the explosion-proof net 15 can prevent fragments from hitting the observation window when the object explodes;
[0043] When the front and rear plates 23 of the carrier structure are in a vertical state, the limit opening matches the L-shaped hanging plate 14, and then the test cavity of the rectangular groove is stabilized by the setting of the front and rear plates 23 by the L-shaped hanging plate 14. At the same time, one side of the carrier structure abuts against the test chamber 11, and the other side abuts against the explosion-proof net 15 and the connecting component, thereby improving the stability of the carrier structure.
[0044] The heating and cooling system inside the temperature test box introduces heated or cooled gas into the test chamber 11 through the air inlet 12, so that the test chamber 11 simulates the corresponding environment, and the water generated by the test is discharged from the drain port.
[0045] Embodiment 2: Further improvement is made on the basis of Embodiment 1, the connecting assembly includes a plurality of connecting columns 35 fixedly connected to the explosion-proof net 15, each horizontal row of connecting columns 35 matches the position of the L-shaped hanging plate 14 and the placement plate 20, an L-shaped mounting groove is provided at the front end of the placement plate 20, a horizontal plate 36 is slidably connected inside the L-shaped mounting groove, a second spring 37 is installed on the lower side of the horizontal plate 36, a first high temperature resistant airbag 38 is installed on the upper side of the horizontal plate 36, a first plug block 39 is installed at the lower end of the horizontal plate 36, and the connecting column 35 is provided with a slot matching the first plug block 39.
[0046] After the hatch 13 is closed, the placement plate 20 is located between the two upper and lower adjacent connecting columns 35. When the heating and cooling system heats up the interior of the test cabin 11, the placement plate 20 conducts heat to the first high-temperature resistant airbag 38 and expands due to the heat. As a result, the cross plate 36, under the push of the first high-temperature resistant airbag 38, overcomes the upward rebound force of the second spring 37 and drives the first plug block 39 initially located inside the L-shaped mounting groove to withdraw from the L-shaped mounting groove and insert into the slot. In this way, the connecting column 35 and the placement plate 20 are connected together under the high temperature state of the test cabin 11 until the temperature inside the test cabin 11 drops, causing the first high-temperature resistant airbag 38 to recover its contracted state under the pressure of the second spring 37 and the first plug block 39, thereby causing the first plug block 39 to retract into the L-shaped mounting groove and release its connection with the connecting column 35.
[0047] When the connecting column 35 is connected to the placement plate 20, the explosion-proof net 15 and the hatch 13 connected to the connecting column 35 are fixedly installed so that when the test cabin 11 is in a high temperature state, the hatch 13 cannot drive the connecting column 35 to separate from the placement plate 20, that is, the hatch 13 cannot be opened, thereby avoiding burns caused by opening the hatch 13 when the test cabin 11 is at a high temperature.
[0048] A step groove is provided on the side of the connecting column 35 close to the test chamber 11, a second high temperature resistant airbag 40 is installed inside the step groove, a T-shaped block 41 is slidably connected inside the step groove, a third spring 42 is installed between the T-shaped plate 41 and the step groove, and the test chamber 11 is provided with a limiting hole matching the T-shaped block 41.
[0049] At the same time, in the high temperature state, only the second high temperature resistant airbag 40 collides, thereby enabling the T-shaped block 41 to overcome the third spring 42 and extend out of the step groove to insert into the limiting hole, thereby improving the sealing stability of the hatch 13 .
[0050] The hatch 13 is provided with an empty slot connected to the step slot, a gear set 43 is rotatably installed inside the empty slot, a rack 44 meshing with the gear set 43 is fixedly installed on the T-shaped block 41, a winding wheel 45 is installed on the output end of the gear set 43, the hatch 13 is slidingly connected to an elastically sliding connection with a warning rod 46, and a pull rope 47 is installed between the winding wheel 45 and the warning rod 46.
[0051] A coil spring is installed between the hatch 13 and the warning rod 46, so that in the initial state, the two warning rods 46 are in contact with each other, and then when the T-shaped block 41 is driven to move by heat, it will drive the rack 44 to move, and then the gear set 43 meshing with the rack 44 will rotate, so that the rotation of the winding wheel 45 will wrap around the pull rope 47, and then the pull rope 47 will pull the warning rod 46 to overcome the rebound force and move away from each other, and then the internal temperature will be prominently displayed through the position of the warning rod 46. At the same time, the warning rod 46 is in contact with the observation window, so that when the warning rod 46 moves by heating or cooling, it can scrape the observation window, and the temperature change of the test cabin 11 will cause water droplets condensed from water vapor to be scraped on the observation window.
[0052] A liquid-passing assembly is installed at the upper end of the test cabin 11, and the liquid-passing assembly includes a water tank 50 connected to the drain port, and a liquid infusion tube 51 is installed at the upper end of the test cabin 11. The liquid infusion tube 51 is rotatably installed with an L-shaped liquid-passing tube 52, and a nozzle 53 is installed at the end of the L-shaped liquid-passing tube 52. The L-shaped liquid-passing tube 52 is installed with a rotating member. The rotating member includes a driving motor and a gear, and the L-shaped liquid-passing tube 52 is installed with a gear ring connected to the gear transmission, so that the driving motor can drive the gear ring to rotate, and then drive the L-shaped liquid-passing tube 52 to rotate with the liquid infusion tube 51 as the center of the circle, and the liquid infusion tube 51 is connected to the water tank, so that the water inside the water tank can be input into the test cabin 13 through the liquid infusion tube 51 through the water pump, so as to be used for the test cabin environment simulation or the test of the article, and at the same time, the liquid infusion tube 51 can be connected to the water tank 50 and connected in parallel with the carbon dioxide storage tank, so that when the article in the test cabin 13 spontaneously ignites, the spontaneous combustion can be quickly controlled by sucking carbon dioxide.
[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.
Claims
1. A tray structure for an ambient temperature test chamber, comprising a placement plate, characterized in that: A sliding groove is provided at the lower end of the placement plate, a ventilation groove is provided through the middle of the placement plate, a rectangular groove is provided in the middle of the placement plate, left and right plates are symmetrically hingedly connected to the rectangular groove, front and rear plates matching the two left and right plates are symmetrically hingedly connected to the front and rear sides of the placement plate, limiting openings are provided on both sides of the two front and rear plates, a connecting plate matching the rectangular groove is connected between the two left and right plates, a number of rotating grooves are provided through the connecting plate, and limiting rods are rotatably connected inside the rotating grooves, and the limiting rods match the distance between the two left and right plates, and through holes are provided on the left and right plates and the front and rear plates.
2. The tray structure of the environmental temperature test box according to claim 1, characterized in that: A sliding groove is provided inside the placement plate, and an adjustment plate is symmetrically slidably connected to the sliding groove. A plurality of first springs are installed between the sliding groove and the side of the two adjustment plates away from each other. A plurality of adjustment grooves are provided through the two adjustment plates. Push blocks are fixedly installed on the side of the two left and right plates close to each other, and matching grooves matching the push blocks are provided on the two adjustment plates.
3. The tray structure of the environmental temperature test box according to claim 1, characterized in that: The rotating groove is installed with a limit column, the limit rod is rotatably connected to the outside of the limit column, the limit column is fixedly connected with a protrusion matching the limit rod, the limit rod is provided with a plurality of grooves matching the protrusions, the limit column at the lowermost side is fixedly connected with a cross seat, the placement plate is provided with a matching installation groove, and both the left and right plates are provided with limit grooves matching the limit column.
4. An environmental temperature test chamber, characterized in that: The carrier structure described in any one of claims 1 to 3 is used, comprising a test box body, wherein the test box body comprises a test cabin, an air inlet, a drain outlet and an exhaust outlet, and a door is sealedly installed at the front end of the test cabin, characterized in that: L-shaped hanging plates matching the slide groove are symmetrically installed inside the test cabin, an explosion-proof net is installed at the door window, and a connecting component is installed between the carrier structure and the explosion-proof net.
5. The environmental temperature test chamber according to claim 4, characterized in that: The connecting assembly includes a plurality of connecting columns fixedly connected to the explosion-proof net, each horizontal row of the connecting columns matches the position of the L-shaped hanging plate and the placement plate, an L-shaped mounting groove is provided at the front end of the placement plate, a horizontal plate is slidably connected inside the L-shaped mounting groove, a second spring is installed on the lower side of the horizontal plate, a first high-temperature resistant airbag is installed on the upper side of the horizontal plate, a first plug block is installed at the lower end of the horizontal plate, and a slot matching the first plug block is provided on the connecting column.
6. An environmental temperature test chamber according to claim 5, characterized in that: A step groove is provided on the connecting column near the test chamber side, a second high temperature resistant airbag is installed inside the step groove, a T-shaped block is slidably connected inside the step groove, a third spring is installed between the T-shaped plate and the step groove, and a limiting hole matching the T-shaped block is provided on the test chamber.
7. An environmental temperature test chamber according to claim 6, characterized in that: The hatch is provided with an empty slot connected to the step slot, a gear set is rotatably installed inside the empty slot, a rack meshing with the gear set is fixedly installed on the T-shaped block, a winding wheel is installed on the output end of the gear set, the hatch is slidingly connected to an elastically sliding connection with a warning rod, and a pull rope is installed between the winding wheel and the warning rod.
8. The environmental temperature test chamber according to claim 4, characterized in that: A liquid flow assembly is installed at the upper end of the test chamber, and the liquid flow assembly includes a water tank connected to the drain port. A liquid infusion tube is installed at the upper end of the test chamber, and an L-shaped liquid flow tube is rotatably installed on the liquid infusion tube. A nozzle is installed at the end of the L-shaped liquid flow tube, and the L-shaped liquid flow tube is installed with a rotating part.