A grid disc support assembly and environmental test chamber

Abstract

The present application belongs to the field of environmental test technology, and discloses a grid disc supporting assembly and an environmental test box. The grid disc supporting assembly comprises a support and a slide rail. Two supports are arranged on two opposite inner walls of the environmental test box. A plurality of variable-diameter mounting holes are arranged on the support in the vertical direction. The variable-diameter mounting hole comprises a first hole and a second hole which are communicated. At least two slide rails are connected to the two supports respectively. A variable-diameter mounting head is arranged on the slide rail. The variable-diameter mounting head comprises a mounting cap and a mounting neck. The variable-diameter mounting head is selectively mounted with the variable-diameter mounting hole to adjust the mounting height of the slide rail. The mounting and dismounting are convenient and fast. The two ends of the grid disc are supported on the top end faces of the two slide rails. In the present application, the grid disc is supported by surface contact with the slide rail, which facilitates the improvement of the support stability of the grid disc. The grid disc does not need to be processed with a clamping groove or a clamping convex, which ensures the strength of the grid disc and avoids deformation. The height position of the grid disc is realized by switching the slide rail on the support, which greatly improves the test safety and efficiency.

Description

[0001] This application is a divisional application of the parent application, which has the application number 2021115724557 and the application date of the parent application is December 21, 2021. The parent invention is entitled "A Grid Support Assembly and an Environmental Test Chamber". Technical Field

[0002] This invention relates to the field of environmental testing technology, and in particular to a grid support assembly and an environmental test chamber. Background Technology

[0003] An environmental test chamber is a box used for environmental simulation testing of electronic, mechanical, and other components or finished products. The grid plate, as the carrier mechanism for placing test samples, is placed on the grid plate bracket inside the chamber. The grid plate bracket is fixed to the side of the inner wall of the test chamber. Multiple slots are set on the grid plate bracket along the height direction. When testing samples of different heights, the grid plate can be placed or removed from the slots of different heights on the grid plate bracket to accommodate the testing of samples of different heights.

[0004] When the test sample is heavy, the slot connection method, being a point support structure, makes the grid disk prone to deformation and loosening. This is especially true during the test when the temperature rises from low to high, as the increased temperature causes the grid disk to deform, sag, and loosen, leading to the test sample falling, test failure, and even damage to the test product. Furthermore, adjusting the grid disk to different heights requires inserting it into two slots, which is difficult to align and install. After the grid disk support is slotted, the support portion becomes narrower, reducing its strength. When the test sample is heavy, the grid disk support is prone to twisting and deformation. Summary of the Invention

[0005] The purpose of this invention is to provide a grid support assembly and an environmental test chamber to solve the problems of insufficient grid support, easy twisting and deformation, and difficult installation when environmental test samples are heavy.

[0006] To achieve this objective, the present invention first provides a grid disk support assembly, disposed within an environmental test chamber for supporting the grid disk, the grid disk support assembly comprising:

[0007] The support is provided in two sets, and the two sets of support are respectively set on two opposite inner walls of the environmental test chamber; each set has at least two support arranged at intervals, and the support has multiple variable diameter mounting holes along the vertical direction, the variable diameter mounting holes including a first hole and a second hole, the first hole and the second hole being connected;

[0008] The slide rail is provided with at least two slide rails, which are respectively connected to two sets of brackets. The slide rail is provided with a variable diameter mounting head, which includes a mounting cap and a mounting neck. The mounting cap is located on the outside of the slide rail and can pass through the first hole and span across the second hole. The mounting neck can slide within the first hole and the second hole.

[0009] The bracket is also provided with a positioning hole, and the slide rail is provided with a positioning element. When the variable diameter mounting hole is installed in conjunction with the variable diameter mounting head, the positioning element can be inserted into the positioning hole to limit the position.

[0010] The slide rail is a U-shaped long groove component, and the variable diameter mounting head and the positioning component are respectively disposed on the two end faces of the open end of the slide rail;

[0011] The positioning element is a rectangular protrusion that extends beyond the open end of the slide rail, and the protruding length of the positioning element is less than the length of the mounting neck.

[0012] Optionally, the second hole is an elongated slot along the vertical direction.

[0013] Optionally, multiple positioning holes are provided, and the multiple positioning holes and multiple variable diameter mounting holes are alternately arranged to form multiple mounting positions, with the positioning hole of each mounting position located below the variable diameter mounting hole.

[0014] Optionally, one side of the slide rail that has the variable diameter mounting head and the positioning member abuts against the bracket.

[0015] Optionally, the variable diameter mounting head and the positioning member are arranged in a one-to-one correspondence in the width direction of the slide rail.

[0016] Optionally, the open end of the slide rail is provided with a folded edge, which is obtained by folding one end of the open end of the slide rail outward by 90°, and the variable diameter mounting head is fixed on the folded edge.

[0017] Optionally, the bracket is a hollow rectangular tube, with the front of the bracket connected to the slide rail and the back connected to the inner wall of the environmental test chamber.

[0018] Optionally, the back of the bracket is provided with a hanging hole, which can be engaged with a hook on the inner wall of the environmental test chamber to achieve hanging. There are multiple hanging holes, which are coaxially spaced and evenly arranged to hang and fix the bracket at multiple points.

[0019] Optionally, the mounting hole has the same structure as the variable diameter mounting hole but is arranged in the opposite direction. The mounting hole includes two through holes of different sizes that are interconnected, with the smaller through hole located above the larger through hole.

[0020] The present invention also provides an environmental test chamber, including the grid support assembly, wherein the two ends of the test grid are respectively supported on two slide rails of the grid support assembly.

[0021] The beneficial effects of this invention are:

[0022] This invention provides a grid disk support assembly. By incorporating slide rails on a bracket, compared to the prior art where the grid disk is directly snapped onto the bracket, the grid disk's two ends are supported on the top faces of two slide rails. This avoids machining grooves or protrusions on the grid disk, ensuring its inherent strength. It achieves surface contact support between the grid disk and the slide rails, and the larger support surface improves the grid disk's support stability, preventing deformation due to the weight of the test sample during testing and ensuring optimal test results. When the grid disk's height needs to be changed, the variable-diameter mounting head on the slide rail is selectively installed on the variable-diameter mounting holes at different height positions on the bracket, and the grid disk is then placed on the slide rail at the corresponding height. This avoids problems such as test sample tipping caused by repeated disassembly and repositioning of the grid disk during testing, significantly improving test safety. The mating structure of the variable-diameter mounting holes and the variable-diameter mounting head facilitates quick assembly and disassembly of the slide rails.

[0023] An environmental test chamber of the present invention provides a grid support assembly provided by the present invention, which is installed inside the chamber. The two ends of the grid are supported on at least two slide rails. Compared with the prior art, the grid itself does not need to be processed with a connecting structure, thus ensuring the strength of the grid itself. The slide rails and the grid are supported by end face contact, with a large support area, which is beneficial to maintaining the shape of the grid when the test sample is heavy, ensuring the smooth progress of the test and improving the test efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a grid disk support assembly provided by the present invention;

[0025] Figure 2 This is a front view of a grid support assembly provided by the present invention;

[0026] Figure 3 This is a rear view of a grid disk support assembly provided by the present invention;

[0027] Figure 4 This is a schematic diagram of the end face structure of the slide rail in a grid support assembly provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the rear structure of a grid support assembly after the bracket and slide rail are installed, provided by the present invention.

[0029] In the picture:

[0030] 1. Bracket; 11. Variable diameter mounting hole; 111. First hole; 112. Second hole; 12. Positioning hole; 13. Hanging hole; 2. Slide rail; 21. Variable diameter mounting head; 211. Mounting cap; 212. Mounting neck; 22. Positioning component; 23. Folded edge. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0032] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning. The term "multiple" should be understood as two or more.

[0035] The present invention provides a grid support assembly and an environmental test chamber. The grid support assembly is disposed inside the environmental test chamber to support the grid, thereby solving the problems of insufficient support, easy twisting and deformation, and difficult installation of the grid when the environmental test sample is heavy.

[0036] like Figure 1 As shown, the grid support assembly provided in this embodiment of the invention includes a bracket 1 and a slide rail 2. There are two sets of brackets 1, each set being disposed on one of two opposing inner walls of the environmental test chamber. Each set contains at least two brackets 1 spaced apart. The bracket 1 has multiple variable-diameter mounting holes 11 along the vertical direction, such as... Figure 2 The variable diameter mounting hole 11 includes a first hole 111 and a second hole 112, which are connected to each other. The slide rail 2 is provided with at least two slide rails, which are respectively connected to two sets of brackets 1. The slide rail 2 is provided with a variable diameter mounting head 21, which includes a mounting cap 211 and a mounting neck 212. The mounting cap 211 is located outside the slide rail 2. The mounting cap 211 can pass through the first hole 111 and span across the second hole 112. The mounting neck 212 can slide within the first hole 111 and the second hole 112.

[0037] The variable diameter mounting head 21 is selectively installed in conjunction with the variable diameter mounting hole 11 to adjust the installation height of the slide rail 2. When the slide rail 2 is installed, the mounting cap 211 passes through the first hole 111 and then slides through the mounting neck 212 from the first hole 111 to the second hole 112 until the mounting neck 212 abuts against the bottom of the second hole 112 to fix the slide rail 2. When the slide rail 2 is fixed, the two ends of the grid can be supported on the top end faces of the two slide rails 2. When the slide rail 2 is removed, the mounting neck 212 slides from the bottom of the second hole 112 into the first hole 111, and the mounting cap 211 disengages from the first hole 111 to separate the slide rail 2 from the bracket 1.

[0038] It needs to be explained that, Figure 1 The diagram shows a structural schematic of a set of brackets 1, fixed to one inner wall of the environmental test chamber. Another set of brackets 1 has the same structure and is fixed to the inner wall of the opposite side of the environmental test chamber. Each set of brackets 1 includes at least two brackets 1 spaced apart. The two ends of a slide rail 2 are respectively connected to two brackets 1 in the same set for fixation. It is understood that the number of brackets 1 and slide rails 2 described above is merely illustrative. In other embodiments, when the depth of the environmental test chamber is large, one slide rail 2 can be connected to three or more brackets 1 simultaneously to prevent bending deformation in the middle of the slide rail 2. Alternatively, multiple sets of brackets 1 can be connected to multiple slide rails 2, meaning that the support end of each grid plate is supported by multiple spaced slide rails 2 to shorten the length of each slide rail 2, facilitating installation while maintaining the same support effect. However, this requires increasing the number of brackets 1, thus the internal space of the environmental test chamber needs to be considered.

[0039] This invention provides a grid disk support assembly. By setting slide rails 2 on a bracket 1, compared to the prior art where the grid disk is directly snapped onto the bracket 1, the two ends of the grid disk are supported on the top end faces of the two slide rails 2. This avoids machining grooves or protrusions on the grid disk, ensuring the grid disk's own strength. It achieves surface contact support between the grid disk and the slide rails 2, and the larger support surface improves the support stability of the grid disk, preventing deformation due to the weight of the test sample during testing, which would affect the test results. When it is necessary to change the height position of the grid disk, it is only necessary to first adjust the slide rails 2 to install them at different height positions on the bracket 1, and then place the grid disk on the slide rail 2 at the corresponding height. This avoids problems such as test sample tipping that may occur due to repeated disassembly and repositioning of the grid disk during testing, greatly improving test safety.

[0040] Optionally, the second hole 112 is an elongated slot along the vertical direction.

[0041] like Figure 2 As shown, taking two brackets 1 in a set as an example, the two brackets 1 have the same structure and are vertically fixed in the environmental test chamber. Each bracket 1 has multiple variable-diameter mounting holes 11 spaced apart vertically. The slide rail 2 has at least two variable-diameter mounting heads 21 on its side, which respectively engage with two variable-diameter mounting holes 11 at the same height on the two brackets 1, thus providing horizontal support for the slide rail 2. The side of the slide rail 2 connects to the two brackets 1, and the top end face of the slide rail 2 forms a horizontal support surface, which the end of the grid can support on. The slide rail 2 can provide full-length support to both ends of the grid, and it is a surface contact support, therefore the grid has good support stability and is not easily deformed. The second hole 112 is a long slot. When the mounting neck 212 slides from the first hole 111 to the second hole 112, it ensures that the slide rail 2 slides vertically within the second hole 112, reducing jamming and allowing the slide rail 2 to smoothly slide to the bottom of the second hole 112.

[0042] It should be explained that the first hole 111 of the variable diameter mounting hole 11 is a rectangular or circular hole with a diameter larger than that of the mounting cap 211. The outer diameter of the mounting cap 211 is smaller than the diameter of the first hole 111 but larger than the diameter of the second hole 112. The outer diameter of the mounting neck 212 is smaller than the diameter of the second hole 112. After the mounting cap 211 passes through the first hole 111, the mounting neck 212 aligns with the second hole 112. The mounting neck 212 slides downward into the second hole 112, and then the mounting cap 211 snaps into the second hole 112, realizing the snap-fit ​​between the slide rail 2 and the bracket 1. The snap-fit ​​method facilitates the quick assembly and disassembly of the slide rail 2 and the bracket 1, thereby allowing for rapid adjustment of the grid height during environmental testing. Preferably, two slide rails 2 are simultaneously provided on each set of brackets 1. Before the test, the two slide rails 2 are placed in test positions at two different heights. When the grid needs to switch test heights, it can be moved directly from one set of slide rails 2 to the other set of slide rails 2, greatly improving test efficiency.

[0043] Optionally, the bracket 1 is also provided with a positioning hole 12, and the slide rail 2 is provided with a positioning element 22. When the variable diameter mounting hole 11 is installed in conjunction with the variable diameter mounting head 21, the positioning element 22 can be inserted into the positioning hole 12 to limit the position.

[0044] Furthermore, multiple positioning holes 12 are provided, and multiple positioning holes 12 and multiple variable diameter mounting holes 11 are alternately arranged in the vertical direction to form multiple mounting positions. The positioning hole 12 of each mounting position is located below the variable diameter mounting hole 11.

[0045] like Figure 1 Each variable diameter mounting hole 11 and each positioning hole 12 on the bracket 1 forms a set as a mounting position, corresponding to a set of variable diameter mounting heads 21 and positioning parts 22 on the slide rail 2. When the variable diameter mounting head 21 is engaged with the variable diameter mounting hole 11, the mounting neck 212 is located at the bottom of the second hole 112, and the mounting cap 211 is engaged behind the second hole 112, as shown. Figure 5 At this time, the positioning component 22 and the positioning hole 12 are connected to position the slide rail 2, preventing the slide rail 2 from moving up and down during the transfer of the grid plate. The positioning component 22 is inserted into the positioning hole 12, which helps to ensure that the mounting cap 211 of the variable diameter mounting head 21 is always engaged in the second hole 112, preventing slippage.

[0046] like Figure 2 The positioning hole 12 extends downwards in the direction of gravity and is located on the side of the smaller-diameter second hole 112. When the mounting cap 211 enters the first hole 111, the mounting neck 212 slides to the second hole 112 under the action of gravity. At this time, the positioning member 22 is aligned with the positioning hole 12. Then, the slide rail 2 is pushed so that the positioning member 22 is inserted into the positioning hole 12, ensuring that the variable diameter mounting head 21 is installed in place in the variable diameter mounting hole 11, and achieving equal height limitation of the slide rails 2 at both ends of the grid. When the grid is placed on the slide rail 2, the positioning member 22 inserted into the positioning hole 12 can prevent the grid from slipping due to vertical movement of the slide rail 2.

[0047] Optionally, the side of the slide rail 2 with the variable diameter mounting head 21 and the positioning element 22 abuts against the bracket 1.

[0048] It is understandable that when the two ends of the grid plate are placed on the top end faces of the two slide rails 2, the slide rail 2 is provided with a variable diameter mounting head 21 and a positioning member 22. The side of the slide rail 2 is connected and limited to the variable diameter mounting hole 11 and the positioning hole 12 on the front side of the bracket 1. After the positioning member 22 is inserted into the positioning hole 12, the side of the slide rail 2 can abut against the front side of the bracket 1, thus greatly improving the stability of the slide rail 2 and increasing the load-bearing capacity of the slide rail 2.

[0049] Optionally, the slide rail 2 is a U-shaped long groove, and the variable diameter mounting head 21 and the positioning member 22 are respectively set on the two end faces of the open end of the slide rail 2, and the variable diameter mounting head 21 and the positioning member 22 are set in a one-to-one correspondence in the width direction of the slide rail 2.

[0050] like Figure 1 and Figure 4 As shown, the open end of the slide rail 2 is fastened to the front side of the bracket 1. The variable diameter mounting head 21 and the positioning element 22 are respectively spaced apart on the two end faces of the open end of the slide rail 2. When the top end face of the slide rail 2 is under load, the lower end face of the slide rail 2 abuts against the bracket 1, which can support the slide rail 2 to maintain a horizontal support surface and ensure the stability of the two ends of the grid. The slide rail 2 is made of U-shaped material, which has high structural strength and low overall weight, making it easy to install and saving costs. The positioning element 22 is located below the variable diameter mounting head 21. After the variable diameter mounting head 21 is installed and positioned with the variable diameter mounting hole 11, the slide rail 2 can abut against the positioning element 22, providing double support for the slide rail 2, making the grid support more stable and reliable.

[0051] Optionally, the open end of the slide rail 2 is provided with a folded edge 23, which is obtained by folding one end of the open end of the slide rail 2 outward by 90°, and the variable diameter mounting head 21 is fixed on the folded edge 23.

[0052] like Figure 4 One side of the U-shaped opening end of the slide rail 2 is folded outward to form a flange 23. The flange 23 is perpendicular to this side, and the variable diameter mounting head 21 is fixed on the flange 23. A positioning element 22 is provided on the other side. The variable diameter mounting head 21 and the positioning element 22 are provided one-to-one and are respectively spaced at both ends of the slide rail 2 along the long axis direction. The U-shaped opening end of the slide rail 2 is fastened to the connecting surface of the bracket 1. The outer surface of the side where the flange 23 is located is a support surface used to support the end of the grid plate. By setting the flange 23, a mounting position is provided for the variable diameter mounting head 21, and it is beneficial to obtain a suitable spacing between the variable diameter mounting head 21 and the positioning element 22 to adapt to the variable diameter mounting hole 11 and the positioning hole 12. The suitable spacing helps to ensure the horizontal position of the support surface of the slide rail 2, and the flange 23 can contact the connecting surface of the bracket 1 during installation, which is beneficial for installation and positioning.

[0053] Optionally, the positioning element 22 is a rectangular protrusion protruding from the end of the slide rail 2, and the protruding length of the positioning element 22 is less than the length of the mounting neck 212.

[0054] Combination Figure 4 and Figure 5The rectangular positioning element 22 restricts the rotation of the slide rail 2 and limits the positioning of the positioning element 22 and the positioning hole 12. The rectangular structure facilitates processing. The positioning element 22 and the slide rail 2 body are machined as a single piece, resulting in good connection strength and high positioning dimensional accuracy. When the mounting cap 211 just passes through the first hole 111, it pushes the slide rail 2 downward, causing the mounting neck 212 to slide into the bottom of the second hole 112. At this time, the positioning element 22 is aligned with the positioning hole 12. Then, it is necessary to further push the slide rail 2 towards the bracket 1 so that the positioning element 22 is inserted into the positioning hole 12 for limitation. It can be understood that the length of the mounting neck 212 cannot be too long. The length of the mounting neck 212 and the protruding length of the positioning element 22 need to meet the following: the length of the mounting neck 212 is equal to the sum of the protruding length of the positioning element 22 and the depth of the second hole 112. If it is too long, it will affect the snap-fit ​​positioning of the mounting cap 211 and the second hole 112, causing the slide rail 2 to tilt too much and affecting the support effect.

[0055] Optionally, the bracket 1 is a hollow rectangular tube, with the front of the bracket 1 connected to the slide rail 2 and the back connected to the inner wall of the environmental test chamber.

[0056] like Figure 1 As shown, bracket 1 is a hollow rectangular tube with high structural strength, light overall weight, and easy processing of mounting holes 11 and positioning holes 12. The wall thickness of bracket 1 is related to the design dimensions of the mounting cap 211 and mounting neck 212 of the reducing mounting head 21. It can be understood that when installing slide rail 2, the reducing mounting head 21 on slide rail 2 needs to be inserted into the reducing mounting hole 11 and then slid in the direction of gravity to engage. Therefore, the length of mounting neck 212 needs to satisfy the following condition: the length of mounting neck 212 is equal to the sum of the wall thickness of bracket 1 and the length of positioning member 22, so that slide rail 2 can be stably mounted on bracket 1. Simultaneously, after the end of positioning member 22 passes through positioning hole 12, the end of positioning member 22 can abut against the back wall of bracket 1 to support the lateral pressure of slide rail 2. Of course, if the end of the slide rail 2 with positioning member 22 also abuts against the front wall of bracket 1, it can further provide support force, achieving a dual support function.

[0057] like Figure 2 As shown, the back of the bracket 1 is provided with hook holes 13, which can be hooked with the inner wall of the environmental test chamber. Multiple hook holes 13 are provided, coaxially spaced and evenly arranged to achieve multi-point hooking and fixing of the bracket 1. Preferably, the hook hole 13 includes two interconnected through holes of different sizes, similar in structure to the variable diameter mounting hole 11 but arranged in the opposite direction. The smaller through hole on the hook hole 13 is located above the larger through hole for snap-fit ​​or hooking.

[0058] This invention also provides an environmental test chamber, including the aforementioned grid support assembly, with both ends of the test grid supported on two slide rails 2 of the grid support assembly. This environmental test chamber, by incorporating the grid support assembly provided by this invention within its chamber, allows the grid's two ends to be supported on at least two slide rails 2. Compared to existing technologies, this eliminates the need for fabricated connection structures in the grid itself, ensuring its inherent strength. Furthermore, the slide rails 2 provide end-face contact support to the grid, resulting in a large support area, which facilitates adjusting the grid's shape when the test sample is heavy, ensuring smooth testing.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A grid disk support assembly, disposed within an environmental test chamber for supporting a grid disk, characterized in that, include: The bracket (1) is provided in two sets, and the two sets of brackets (1) are respectively set on two opposite inner walls of the environmental test chamber; each set has at least two brackets (1) spaced apart, and the bracket (1) is provided with a plurality of variable diameter mounting holes (11) along the vertical direction. The variable diameter mounting holes (11) include a first hole (111) and a second hole (112), and the first hole (111) and the second hole (112) are connected. The slide rail (2) is provided with at least two slide rails (2), and the at least two slide rails (2) are respectively connected to two sets of brackets (1). The slide rail (2) is provided with a variable diameter mounting head (21). The variable diameter mounting head (21) includes a mounting cap (211) and a mounting neck (212). The mounting cap (211) is located on the outside of the slide rail (2). The mounting cap (211) can pass through the first hole (111) and span across the second hole (112). The mounting neck (212) can slide within the first hole (111) and the second hole (112). The bracket (1) is also provided with a positioning hole (12), and the slide rail (2) is provided with a positioning element (22). When the variable diameter mounting hole (11) is installed in conjunction with the variable diameter mounting head (21), the positioning element (22) can pass through the positioning hole (12) to limit the position. There are multiple positioning holes (12), and multiple positioning holes (12) and multiple variable diameter mounting holes (11) are alternately arranged to form multiple mounting positions. The positioning hole (12) of each mounting position is located below the variable diameter mounting hole (11). The slide rail (2) is a U-shaped long groove component, and the variable diameter mounting head (21) and the positioning component (22) are respectively disposed on the two end faces of the open end of the slide rail (2); The positioning element (22) is a rectangular protrusion that protrudes from the open end of the slide rail (2), and the protruding length of the positioning element (22) is less than the length of the mounting neck (212); The length of the mounting neck (212) is equal to the sum of the wall thickness of the bracket (1) and the length of the positioning member (22). The bracket (1) is a hollow rectangular tube. After the end of the positioning member (22) passes through the positioning hole (12), the end of the positioning member (22) abuts against the back wall of the bracket (1) to support the lateral pressure of the slide rail (2). The slide rail (2) is provided with the variable diameter mounting head (21) and the side of the positioning member (22) abuts against the bracket (1).

2. The grid disk support assembly according to claim 1, characterized in that, The second hole (112) is a long slot along the vertical direction.

3. The grid disk support assembly according to claim 1, characterized in that, The variable diameter mounting head (21) and the positioning member (22) are respectively set in a one-to-one correspondence in the width direction of the slide rail (2).

4. The grid disk support assembly according to claim 3, characterized in that, The slide rail (2) has a folded edge (23) at its open end. The folded edge (23) is obtained by folding one end of the open end of the slide rail (2) outward by 90°. The variable diameter mounting head (21) is fixed on the folded edge (23).

5. The grid disk support assembly according to claim 1, characterized in that, The front of the bracket (1) is connected to the slide rail (2), and the back is connected to the inner wall of the environmental test chamber.

6. The grid disk support assembly according to claim 5, characterized in that, The back of the bracket (1) is provided with a hanging hole (13). The hanging hole (13) can be engaged with the hook on the inner wall of the environmental test chamber to achieve hanging. There are multiple hanging holes (13). The multiple hanging holes (13) are coaxially spaced and evenly arranged to hang and fix the bracket (1) at multiple points.

7. The grid disk support assembly according to claim 6, characterized in that, The mounting hole (13) has the same structure as the variable diameter mounting hole (11) but is arranged in the opposite direction. The mounting hole (13) includes two through holes of different sizes that are connected to each other. The smaller through hole is located above the larger through hole.

8. An environmental test chamber, characterized in that, The test grid disk is supported at both ends on two slide rails (2) of the grid disk support assembly according to any one of claims 1-7.

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