Bearing mechanism and environmental test box

Abstract

The utility model relates to the technical field of environmental tests, and discloses a bearing mechanism and an environmental test box. The bearing mechanism comprises an installation assembly and a grid disc assembly, the installation assembly comprises two bearing supports, the two bearing supports are arranged on the two opposite inner side walls of the test box body respectively, bearing grooves are formed in the bearing supports, and the bearing grooves in the two bearing supports are oppositely arranged. A limiting surface and a bearing surface are respectively formed on two groove walls, which are distributed in the vertical direction, of the bearing groove; the two ends of the grid disc assembly are borne on the bearing faces of the two opposite bearing grooves respectively, and the grid disc assembly is used for bearing a to-be-tested piece. According to the bearing mechanism, the phenomenon that the grid disc assembly topples over due to outward movement of the gravity center in the drawing process can be avoided, and therefore the safety of test operation of the to-be-tested piece in the environment test box is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental testing, in particular to a bearing mechanism and an environmental testing box. Background Art

[0002] Environmental test chambers are test equipment that use scientific and technological means to simulate temperature, humidity, air pressure and light intensity. They are used to evaluate the performance of the products to be tested in these simulated environments, thereby ensuring that the products leaving the factory meet the corresponding national standards or industry standards.

[0003] The environmental test chamber in the prior art usually includes a box body and a bearing mechanism, and the bearing mechanism includes a mounting assembly and a grid assembly. The mounting assembly is fixed on the inner side wall of the box body, and a plurality of slots are arranged on the mounting assembly along the height direction. When the heights of the samples to be tested are different, the grid assembly can be taken in and placed in the slots of different heights of the mounting assembly, so as to adapt to the testing of samples of different heights. When taking and placing the samples to be tested on the grid assembly, it is usually necessary to partially pull the grid assembly out of the slot of the mounting assembly. However, since the center of gravity of the grid assembly moves outward after being pulled out, the grid assembly and the samples to be tested are tipped over to the outside of the box body, and even tilted up with the mounting assembly, resulting in damage to the samples to be tested, affecting the test efficiency and safety.

[0004] Therefore, it is urgent to propose a bearing mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve or at least alleviate part or all of the above problems. To this end, the utility model provides a bearing mechanism and an environmental test box.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] A bearing mechanism is installed in a test box of an environmental test box, and the bearing mechanism comprises:

[0008] The mounting assembly comprises two load-bearing brackets, the two load-bearing brackets are respectively arranged on two opposite inner side walls of the test box, the load-bearing brackets are provided with load-bearing grooves, the load-bearing grooves on the two load-bearing brackets are arranged opposite to each other, and two groove walls of the load-bearing grooves distributed in the up-down direction respectively form a limiting surface and a load-bearing surface;

[0009] The two ends of the grid plate assembly are respectively carried on the bearing surfaces of the two opposite bearing grooves, and the grid plate assembly is used for carrying the test piece.

[0010] As a preferred solution of the bearing mechanism provided by the utility model, the bearing groove passes through the bearing bracket along the pulling direction of the grid assembly, and the installation assembly also includes a limiting cover, which at least partially covers the opening of the bearing groove toward the rear side wall of the test box.

[0011] As a preferred solution of the carrying mechanism provided by the utility model, the carrying mechanism also includes two groups of connecting components, and the two groups of connecting components are respectively arranged on the two opposite inner walls of the test box, and each group of connecting components includes at least two connecting brackets that are parallel and spaced along the pulling direction of the grating assembly, and each of the carrying brackets is clamped on at least two connecting brackets on the corresponding side.

[0012] As a preferred solution of the bearing mechanism provided by the utility model, each of the connecting brackets is provided with a mounting hole, and the mounting holes include a first hole and a second hole distributed up and down and connected, and the mounting assembly also includes a fixing piece, and each of the bearing brackets is provided with the fixing piece, and the fixing piece includes a connected fixing cap and a fixing neck, and the fixing neck is connected to the bearing bracket, and the size of the fixing neck is smaller than the size of the second hole, and the size of the fixing cap is smaller than the size of the first hole and larger than the size of the second hole; and / or

[0013] Each of the connecting brackets is also provided with a positioning hole, and the supporting bracket is provided with a positioning portion which is plugged and matched with the positioning hole.

[0014] As a preferred solution of the bearing mechanism provided by the utility model, each of the connecting brackets is provided with a plurality of the mounting holes and a plurality of the positioning holes which are spaced and alternately arranged along the vertical direction, each of the mounting holes and the positioning holes located therebelow form a mounting position, and the plurality of mounting positions located at the same height on the connecting brackets in each group of the connecting components jointly carry a bearing bracket.

[0015] As a preferred solution of the bearing mechanism provided by the utility model, the connecting bracket is further provided with a hanging hole matched with a hook on the inner wall of the test box.

[0016] As a preferred solution of the bearing mechanism provided by the utility model, the grid plate assembly includes:

[0017] A grid frame, which is carried in two opposite carrying grooves;

[0018] The grid disk surface is arranged on the grid disk frame, and a plurality of hollow holes arranged in an array are opened on the grid disk surface.

[0019] As a preferred solution of the bearing mechanism provided by the utility model, the grid frame includes a crossbeam, a longitudinal beam and a reinforcing beam, the two crossbeams are parallel and spaced apart along a first direction, the two longitudinal beams are parallel and spaced apart along a second direction, and the two ends of the two crossbeams are respectively connected to the two ends of the two longitudinal beams, and the reinforcing beam is connected between the two crossbeams and / or between the two longitudinal beams; wherein the first direction is perpendicular to the second direction.

[0020] As a preferred solution of the bearing mechanism provided by the utility model, the grid plate surface is made of stainless steel, and an antistatic layer is also provided on the grid plate surface; or the grid plate surface is made of insulating material.

[0021] The utility model also provides an environmental test box, comprising a test box body and the above-mentioned bearing mechanism, wherein the bearing mechanism is installed in the test box body and is used for bearing a to-be-tested object.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a bearing mechanism, wherein a bearing groove is arranged on a bearing bracket, and two groove walls of the bearing groove distributed in the up-and-down directions respectively form a limiting surface and a bearing surface, the bearing surface is used to bear the corresponding grid disc assembly, and serves as a slide rail surface when the grid disc assembly is pushed in and pulled out, and the limiting surface is located above the bearing surface to limit the grid disc assembly when it is pulled out along the bearing groove; when the grid disc assembly is pulled out of the bearing groove and tends to tilt, the limiting surface can abut against the top of the grid disc assembly, so that the grid disc assembly will not tip over due to the outward shift of the center of gravity, thereby ensuring the safety of the test operation of the test piece in the environmental test chamber.

[0024] The utility model also provides an environmental test box, which can avoid the phenomenon of the grid assembly tipping over due to the outward shift of the center of gravity during the pulling process by applying the above-mentioned bearing mechanism, thereby ensuring the safety of the test operation of the test piece in the environmental test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the environmental test chamber provided by the embodiment of the utility model without the cover;

[0026] Figure 2 It is a structural schematic diagram of the bearing mechanism provided by an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the load-bearing bracket provided by an embodiment of the utility model at a viewing angle;

[0028] Figure 4 is a schematic structural diagram of the load-bearing bracket provided by an embodiment of the utility model at another viewing angle;

[0029] Figure 5 It is a schematic diagram of the structure of the connecting bracket provided by the embodiment of the utility model at one viewing angle;

[0030] Figure 6 is a schematic structural diagram of the connecting bracket provided by an embodiment of the utility model at another viewing angle;

[0031] Figure 7 It is a schematic diagram of the structure of the installation assembly and the connection assembly provided by the embodiment of the utility model at one viewing angle;

[0032] Figure 8 It is a schematic diagram of the structure of the installation assembly and the connection assembly provided by the embodiment of the utility model from another perspective;

[0033] Fig. 9 It is a schematic diagram of the structure of the grid plate assembly provided by the embodiment of the utility model at a viewing angle;

[0034] Fig.10 It is a schematic structural diagram of the grating assembly provided by an embodiment of the utility model from another perspective.

[0035] In the figure:

[0036] 100. Carrying mechanism;

[0037] 110, mounting assembly; 111, bearing bracket; 1110, bearing slot; 1111, bearing surface; 1112, limiting surface; 1113, positioning portion; 112, limiting cover; 113, fixing member; 1131, fixing cap; 1132, fixing neck;

[0038] 120, grid assembly; 121, grid frame; 1211, crossbeam; 1212, longitudinal beam; 1213, reinforcing beam; 122, grid surface; 1221, hollow hole;

[0039] 130, connecting assembly; 131, connecting bracket; 1310, mounting hole; 1311, first hole; 1312, second hole; 1313, positioning hole; 1314, hanging hole;

[0040] 200. Test chamber. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] Figure 1 A schematic structural diagram of the environmental test chamber provided in this embodiment is shown with the cover hidden. Figure 2 FIG. 1 shows a schematic structural diagram of the supporting mechanism 100 provided in this embodiment. Figure 1-Figure 2 As shown, this embodiment provides an environmental test chamber, which includes a test chamber 200 and a carrying mechanism 100, wherein the carrying mechanism 100 is installed in the test chamber 200 and is used to carry the test piece. The environmental test chamber can use scientific and technological means to simulate temperature, humidity, air pressure and light intensity to evaluate the performance of the test piece carried on the carrying mechanism 100 in a simulated environment. Optionally, the carrying mechanism 100 includes a mounting assembly 110 and a grid assembly 120, wherein the grid assembly 120 is installed in the test chamber 200 through the mounting assembly 110, and the grid assembly 120 is used to carry the test piece.

[0046] Optionally, a temperature and humidity adjustment system (not shown) is further provided in the test box 200, and the temperature and humidity adjustment system is used to adjust the temperature and humidity in the test box 200, so that the test piece is tested under a preset stability and preset humidity, thereby ensuring the accuracy of the test result. It should be noted that the temperature and humidity adjustment system is a relatively mature technology in the prior art, and the specific structure and working principle of the temperature and humidity adjustment system are not described in detail in this embodiment.

[0047] In the related art, when placing and taking the workpiece to be tested on the grid assembly, it is usually necessary to partially pull the grid assembly out of the slot of the mounting assembly. However, since the center of gravity of the grid assembly moves outward after being pulled out, the grid assembly and the workpiece to be tested may tip over to the outside of the test box, or even lift up with the mounting assembly, causing damage to the workpiece to be tested, affecting the test efficiency and safety. In order to solve this problem, the present embodiment further provides a bearing mechanism 100, which can prevent the grid assembly 120 from tipping over when being partially pulled out of the mounting assembly 110, thereby ensuring the efficiency and safety of the test process.

[0048] Figure 3 A schematic structural diagram of the supporting bracket 111 provided in this embodiment at a viewing angle is shown. Figure 4 FIG. 1 shows a schematic structural diagram of the support bracket 111 provided in this embodiment from another perspective. Figure 3-Figure 4 Combined with Figure 2 As shown, the bearing mechanism 100 provided in this embodiment includes an installation component 110 and a grid assembly 120, the installation component 110 includes two bearing brackets 111, the two bearing brackets 111 are respectively arranged on two opposite inner walls of the test box 200, and bearing grooves 1110 are opened on the bearing brackets 111. The bearing grooves 1110 on the two bearing brackets 111 are relatively arranged, and two groove walls of the bearing grooves 1110 distributed in the up and down directions respectively form a limiting surface 1112 and a bearing surface 1111; the two ends of the grid assembly 120 are respectively supported on the bearing surfaces 1111 of the two opposite bearing grooves 1110.

[0049] The bearing mechanism 100 provided in this embodiment is configured by setting a bearing groove 1110 on a bearing bracket 111, and two groove walls of the bearing groove 1110 distributed in the up and down directions respectively form a limiting surface 1112 and a bearing surface 1111, wherein the bearing surface 1111 is used to bear the corresponding grating assembly 120 and serve as a sliding rail surface when the grating assembly 120 is pushed in and pulled out, and the limiting surface 1112 is located above the bearing surface 1111 to limit the grating assembly 120 when it is pulled out along the bearing groove 1110; when the grating assembly 120 is pulled out of the bearing groove 1110 and tends to tilt, the limiting surface 1112 can abut against the top of the grating assembly 120, so that the grating assembly 120 will not tip over due to the outward shift of the center of gravity, thereby ensuring the safety of the test operation of the test piece in the environmental test chamber.

[0050] like Figure 3 As shown, the bearing groove 1110 penetrates the bearing bracket 111 along the pulling direction of the grid assembly 120, and the mounting assembly 110 further includes a limiting cover 112, which at least partially covers the opening of the rear side wall of the bearing groove 1110 toward the test box 200. By providing the limiting cover 112, the grid assembly 120 can be positioned when it is pushed into the test box 200. When the operator pushes the grid assembly 120 to slide along the bearing surface 1111 into the test box 200 until the grid assembly 120 abuts against the limiting cover 112, it means that the grid assembly 120 has reached the preset position. The limiting cover 112 plays the role of reminding the grid assembly 120 to be in place, thereby ensuring the accuracy of the position of the grid assembly 120 during the test, and further ensuring the accuracy of the test. In this embodiment, the limiting cover 112 completely covers the opening of the rear side wall of the bearing slot 1110 toward the test box 200, that is, the top and bottom of the limiting cover 112 are respectively connected to the limiting surface 1112 and the bearing surface 1111. This design can also strengthen the structural strength of the limiting surface 1112 and the bearing surface 1111, improve the bearing strength of the bearing bracket 111, and avoid deformation of the bearing bracket 111 when carrying a heavier test piece.

[0051] Figure 5 A schematic structural diagram of the connecting bracket 131 provided in this embodiment at a viewing angle is shown. Figure 6 FIG. 1 is a schematic structural diagram of the connecting bracket 131 provided in this embodiment from another viewing angle. Figure 7 FIG. 1 is a schematic diagram showing the structure of the installation component 110 and the connection component 130 provided in this embodiment at a viewing angle. Figure 5-Figure 7 Combined with Figure 1As shown, the supporting mechanism 100 also includes two groups of connecting components 130, and the two groups of connecting components 130 are respectively arranged on the two opposite inner walls of the test box 200, and each group of connecting components 130 includes at least two connecting brackets 131 that are parallel and spaced along the pulling direction of the grid assembly 120, and each supporting bracket 111 is clamped on at least two connecting brackets 131 on the corresponding side to achieve the effect of fixing the supporting bracket 111 on the inner wall of the test box 200, and it is easy to disassemble and assemble.

[0052] Specifically, if Figure 4 , Figure 5 and Figure 7 As shown, each connecting bracket 131 is provided with a mounting hole 1310, and the mounting hole 1310 includes a first hole 1311 and a second hole 1312 which are distributed up and down and connected; the mounting assembly 110 also includes a fixing member 113, and each supporting bracket 111 is provided with a fixing member 113, and the fixing member 113 includes a connected fixing cap 1131 and a fixing neck 1132, the fixing neck 1132 is connected to the supporting bracket 111, the size of the fixing neck 1132 is smaller than the size of the second hole 1312, and the size of the fixing cap 1131 is smaller than the size of the first hole 1311 and larger than the size of the second hole 1312. By adopting this arrangement, the bearing bracket 111 can be quickly disassembled and assembled on the connecting bracket 131. When the bearing bracket 111 needs to be installed on the connecting bracket 131, the fixing piece 113 can be aligned with the first hole 1311 and inserted, and then the fixing neck 1132 can be slid from the first hole 1311 into the second hole 1312. At this time, the fixing cap 1131 and the bearing bracket 111 can be respectively located on both sides of the connecting bracket 131, thereby achieving the fixation of the bearing bracket 111 on the connecting bracket 131; when the bearing bracket 111 needs to be removed from the connecting bracket 131, the operator can push the bearing bracket 111 upwards to make the fixing neck 1132 slide from the second hole 1312 into the first hole 1311. At this time, the fixing cap 1131 can be detached from the first hole 1311, thereby achieving the separation of the bearing bracket 111 and the connecting bracket 131.

[0053] In this embodiment, the first hole 1311 is a square hole, the second hole 1312 is a semicircular hole, the fixing cap 1131 and the fixing neck 1132 are both cylindrical structures, the size of the first hole 1311 specifically refers to the side length of the first hole 1311, and the size of the second hole 1312 specifically refers to the diameter of the second hole 1312. The size of the fixing cap 1131 specifically refers to the diameter of the fixing cap 1131, and the size of the fixing neck 1132 specifically refers to the diameter of the fixing neck 1132. This embodiment does not limit the specific shapes of the first hole 1311, the second hole 1312, the fixing cap 1131 and the fixing neck 1132. "The size of the fixing neck 1132 is smaller than the size of the second hole 1312" specifically means that when the fixing neck 1132 is inserted into the second hole 1312, there is a gap between the outer periphery of the fixing neck 1132 and the hole wall of the second hole 1312, and the fixing neck 1132 can move between the first hole 1311 and the second hole 1312 in the up and down directions; "The size of the fixing cap 1131 is smaller than the size of the first hole 1311 and larger than the size of the second hole 1312" specifically means that when the fixing cap 1131 is inserted into the first hole 1311, there is a gap between the outer periphery of the fixing cap 1131 and the hole wall of the first hole 1311, and when the fixing neck 1132 is inserted into the second hole 1312, the fixing cap 1131 cannot fall out of the second hole 1312 along its own axial direction.

[0054] It should be noted that Figure 7 , a schematic diagram of the structure of a group of connection components 130 and the load-bearing bracket 111 installed on the group of connection components 130 is shown. In this embodiment, the group of connection components 130 includes two connection brackets 131, which are arranged on one side inner wall of the test box 200 in parallel and at intervals along the pulling direction of the grid assembly 120. The specific structure of another group of connection components 130 is the same as that of the group of connection components 130, and is fixed on the other side inner wall of the test box 200. It can be understood that the number of connection brackets 131 in each group of connection components 130 is only an exemplary description. In other embodiments, when the size of the test box 200 along the pulling direction of the grid assembly 120 is long, the number of connection brackets 131 in each group of connection components 130 can be set to three groups, four groups, five groups, or even more groups to achieve stable bearing of the load-bearing bracket 111. Adaptively, each supporting bracket 111 is provided with fixing members 113 , the number of which is the same as and corresponds to the number of connecting brackets 131 in each group of connecting components 130 .

[0055] Taking two connecting brackets 131 in a set of connecting components 130 as an example, the two connecting brackets 131 have the same structure and are both fixedly arranged in the vertical direction in the test box 200. Each connecting bracket 131 is provided with a plurality of mounting holes 1310 arranged at intervals in the vertical direction, and each supporting bracket 111 is provided with two fixing members 113 (see Figure 4 ), the two fixing members 113 are respectively connected to the two mounting holes 1310 at the same height on the two connecting brackets 131 on the corresponding sides, so that the supporting bracket 111 can horizontally support the grid assembly 120. With this design, on the one hand, the test height of the DUT can be adjusted, and on the other hand, multiple DUTs can be tested at one time to improve the test efficiency.

[0056] like Figure 4 and Figure 5 As shown, each connecting bracket 131 is also provided with a positioning hole 1313, and the supporting bracket 111 is provided with a positioning portion 1113 plugged and matched with the positioning hole 1313. When the mounting hole 1310 is matched and installed with the fixing member 113, the positioning portion 1113 can be inserted into the positioning hole 1313 to limit the position. This design can prevent the supporting bracket 111 from moving up and down when the grid assembly 120 moves along the bearing surface 1111. The positioning portion 1113 is inserted into the positioning hole 1313 to ensure that the fixing cap 1131 of the fixing member 113 is always clamped at the second hole 1312 to prevent slipping. Optionally, the number of positioning holes 1313 on each connecting bracket 131 is multiple, and the multiple positioning holes 1313 and the multiple mounting holes 1310 on each connecting bracket 131 are alternately and spaced apart in the vertical direction, and each mounting hole 1310 forms a mounting position with the positioning hole 1313 located below it, and the multiple mounting positions located at the same height on the connecting bracket 131 in each group of connecting components 130 jointly support a supporting bracket 111.

[0057] For the convenience of processing, in this embodiment, the positioning portion 1113 and the bearing bracket 111 are an integrated structure, which simplifies the processing technology and can omit the steps of assembling multiple parts to improve the processing efficiency. When processing the bearing bracket 111, a plate-like structure of the required size can be formed on a larger steel plate by laser cutting. When cutting, the positioning portion 1113 needs to be cut synchronously, and then a bending machine is used to bend 90° forward or 90° backward multiple times to form a bracket structure with an S-shaped cross-section. Then, the limiting cover 112 is welded to the above-mentioned bracket structure to form the bearing bracket 111. The manufacturing method is simple, efficient, and low-cost.

[0058] Figure 8 FIG. 1 is a schematic diagram showing the structure of the installation component 110 and the connection component 130 provided in this embodiment from another perspective. Figure 8 Combined with Figure 6 As shown, the connecting bracket 131 is also provided with a test box 200 (see Figure 1) to achieve a stable connection between the connecting bracket 131 and the test box 200. Optionally, each connecting bracket 131 is provided with a plurality of connecting holes 1314 arranged at intervals along the vertical direction, and each connecting hole 1314 can correspond to a hook, thereby further improving the stability of the connection between the connecting bracket 131 and the inner wall of the test box 200.

[0059] In this embodiment, the hanging hole 1314 includes a first hanging hole and a second hanging hole which are arranged up and down and connected, wherein the aperture of the first hanging hole is smaller than the aperture of the second hanging hole. When the connecting bracket 131 needs to be installed on the test box 200, the hook on the inner wall of the test box 200 can be inserted from the second hanging hole, and then the operator releases the connecting bracket 131. The connecting bracket 131 can move downward under the action of its own gravity, so that the hook slides from the second hanging hole into the first hanging hole, and the outer diameter of the hook is smaller than the aperture of the first hanging hole, thereby realizing the plug-in limit between the hook and the first hanging hole, ensuring that the connecting bracket 131 can be stably installed in the test box 200.

[0060] Optionally, in this embodiment, when processing the connection bracket 131, a hollow rectangular pipe can be selected, and the installation hole 1310 and the positioning hole 1313 can be processed on one side of the rectangular pipe, and the hanging hole 1314 can be processed on the other side of the rectangular pipe. The connection bracket 131 of the rectangular pipe has the advantages of high structural strength, light overall weight and easy processing.

[0061] Fig. 9 A schematic structural diagram of the grating assembly 120 provided in this embodiment at a viewing angle is shown. Fig.10 FIG. 1 shows a schematic diagram of the structure of the grating assembly 120 provided in this embodiment from another perspective. Figure 9-10 Combined with Figure 2 As shown, the grid assembly 120 includes a grid frame 121 and a grid surface 122. The grid frame 121 is carried in two opposite bearing grooves 1110. The grid surface 122 is arranged on the grid frame 121. A plurality of hollow holes 1221 arranged in an array are provided on the grid surface 122. By providing the hollow holes 1221 on the grid surface 122, the air circulation above and below the grid surface 122 can be ensured, thereby ensuring the consistency of the temperature and humidity environment in the test box 200.

[0062] Furthermore, the grid frame 121 includes a crossbeam 1211, a longitudinal beam 1212 and a reinforcing beam 1213. The two crossbeams 1211 are arranged in parallel and spaced apart along the first direction, the two longitudinal beams 1212 are arranged in parallel and spaced apart along the second direction, and the two ends of the two crossbeams 1211 are respectively connected to the two ends of the two longitudinal beams 1212, and a reinforcing beam 1213 is connected between the two crossbeams 1211 and / or between the two longitudinal beams 1212. The grid frame 121 formed in this way can, on the one hand, prevent the grid frame 121 from blocking the hollow holes 1221 on the grid disk surface 122 to ensure the air flow of the entire grid assembly 120; on the other hand, it can also simplify the assembly process, save materials, and thus reduce processing costs; by setting the reinforcing beam 1213, the supporting capacity of the entire grid frame 121 can also be improved to ensure the stability of the grid assembly 120 in carrying the test piece. Optionally, the cross beam 1211, the longitudinal beam 1212 and the reinforcing beam 1213 are all made of square tubes, and the three are connected by welding, which is convenient for obtaining materials and has a tight connection.

[0063] It should be noted that, in this embodiment, the first direction specifically refers to the pulling direction of the grid assembly 120, that is, the depth direction of the test box 200, and the second direction specifically refers to the width direction of the test box 200. Of course, this embodiment does not limit the first direction and the second direction, and the operator can adjust them according to actual conditions.

[0064] In this embodiment, the grid disk surface 122 is cut from a stainless steel plate, has a simple manufacturing process, and has a high bearing strength. In order to carry the static-sensitive DUT, an antistatic layer is also provided on the grid disk surface 122. Exemplarily, the antistatic layer can be a Teflon film.

[0065] Of course, in other embodiments, the grid plate surface 122 can be directly made of insulating material, which can also achieve the above effect. For example, the grid plate surface 122 can be made of FR4 insulating material, and a hollow hole 1221 is opened thereon.

[0066] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bearing mechanism, installed in a test box (200) of an environmental test box, characterized in that: The bearing mechanism comprises: The mounting assembly (110) comprises two bearing brackets (111), the two bearing brackets (111) are respectively arranged on two opposite inner side walls of the test box (200), the bearing brackets (111) are provided with bearing grooves (1110), the bearing grooves (1110) on the two bearing brackets (111) are arranged opposite to each other, and two groove walls of the bearing grooves (1110) distributed in the up-down direction respectively form a limiting surface (1112) and a bearing surface (1111); The two ends of the grid plate assembly (120) are respectively supported on the supporting surfaces (1111) of the two opposite supporting grooves (1110), and the grid plate assembly (120) is used for supporting the test piece.

2. The supporting mechanism according to claim 1, characterized in that: The bearing groove (1110) passes through the bearing bracket (111) along the pulling direction of the grid assembly (120), and the installation assembly (110) further includes a limiting cover (112), and the limiting cover (112) at least partially covers the opening of the bearing groove (1110) toward the rear side wall of the test box (200).

3. The supporting mechanism according to claim 1, characterized in that: The bearing mechanism further comprises two groups of connection components (130), the two groups of connection components (130) being respectively arranged on two opposite inner side walls of the test box (200), each group of connection components (130) comprising at least two connection brackets (131) arranged in parallel and at intervals along the pulling direction of the grid assembly (120), and each of the bearing brackets (111) being clamped on at least two of the connection brackets (131) on the corresponding side.

4. The supporting mechanism according to claim 3, characterized in that: Each of the connecting brackets (131) is provided with a mounting hole (1310), and the mounting hole (1310) includes a first hole (1311) and a second hole (1312) which are distributed up and down and are connected to each other. The mounting assembly (110) further includes a fixing member (113), and each of the supporting brackets (111) is provided with the fixing member (113), and the fixing member (113) includes a fixing cap (1131) and a fixing neck (1132) which are connected to each other. The fixing neck (1132) is connected to the supporting bracket (111), and the size of the fixing neck (1132) is smaller than the size of the second hole (1312), and the size of the fixing cap (1131) is smaller than the size of the first hole (1311) and larger than the size of the second hole (1312); and / or Each of the connecting brackets (131) is also provided with a positioning hole (1313), and the supporting bracket (111) is provided with a positioning portion (1113) that is plugged and matched with the positioning hole (1313).

5. The supporting mechanism according to claim 4, characterized in that: Each of the connecting brackets (131) is provided with a plurality of the mounting holes (1310) and a plurality of the positioning holes (1313) which are spaced and alternately arranged in a vertical direction, and each of the mounting holes (1310) and the positioning holes (1313) located therebelow form a mounting position, and the plurality of mounting positions located at the same height on the connecting brackets (131) in each group of the connecting components (130) jointly support one of the supporting brackets (111).

6. The supporting mechanism according to claim 3, characterized in that: The connecting bracket (131) is also provided with a hanging hole (1314) that matches with a hook on the inner wall of the test box (200).

7. The supporting mechanism according to any one of claims 1 to 6, characterized in that: The grid plate assembly (120) comprises: A grid frame (121) supported in two opposite supporting grooves (1110); The grid disk surface (122) is arranged on the grid disk frame (121), and a plurality of hollow holes (1221) arranged in an array are provided on the grid disk surface (122).

8. The supporting mechanism according to claim 7, characterized in that: The grille frame (121) includes a crossbeam (1211), a longitudinal beam (1212) and a reinforcing beam (1213), wherein the two crossbeams (1211) are arranged in parallel and spaced apart along a first direction, and the two longitudinal beams (1212) are arranged in parallel and spaced apart along a second direction, and the two ends of the two crossbeams (1211) are respectively connected to the two ends of the two longitudinal beams (1212), and the reinforcing beam (1213) is connected between the two crossbeams (1211) and / or between the two longitudinal beams (1212); wherein the first direction is perpendicular to the second direction.

9. The supporting mechanism according to claim 7, characterized in that: The grid disk surface (122) is made of stainless steel, and an antistatic layer is also provided on the grid disk surface (122); or the grid disk surface (122) is made of insulating material.

10. An environmental test chamber, characterized in that: It comprises a test box (200) and a bearing mechanism according to any one of claims 1 to 9, wherein the bearing mechanism is installed in the test box (200) and is used to bear a test piece.

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