Moving device for fixing test board

Abstract

The utility model provides a moving device for fixing a test board, which comprises a vehicle body, a test board placing area and a moving device, and the test board placing area and the moving device are arranged on the vehicle body. The device further comprises a first movable rod and a resettable assembly. The vehicle body comprises a first free surface and a second free surface; the first movable rod and the resettable assembly are arranged on the vehicle body, and the resettable assembly comprises a resettable piece and a second movable rod; one end of the reset piece is arranged in the vehicle body, and the other end of the reset piece is connected with the second movable rod which is movably arranged on the vehicle body. And the resettable assembly is used for limiting the second free surface. According to the utility model, the resettable assembly is arranged on the vehicle body and is used for limiting the second free surface, so that the test board can be prevented from sliding out of the vehicle body during transportation, and the test board can be ensured to smoothly slide out of the vehicle body and be inserted into the box body for testing; and the vehicle body can be pulled out before testing, so that a reset piece is reset, a second movable rod is driven to reset, and a test plate of the next round can be conveniently placed.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, and more specifically, to a moving device for fixing a test board. Background Art

[0002] Chip aging test is one of the key means to evaluate the performance change of semiconductor chips during long-term use. With the wide application of electronic devices and the increasing complexity of integrated circuits, the reliability and lifespan of chips have become important factors affecting product quality and market competitiveness.

[0003] When testing chips, the test board will undergo aging tests in the aging test chamber. Due to the large area and total quantity of the test board, a carrier vehicle is used to carry and transport the test board, move the test board into the chamber, and insert it into the slot of the chamber for aging tests.

[0004] Currently, one side of the carrier vehicle is a free surface, which is used to slide out the test board and plug it into the slot of the test chamber for testing, and it is also convenient to pull out the carrier vehicle before testing. However, during the transportation of the carrier vehicle, when the road surface is uneven or the moving speed is too fast, it is easy for the test board to slide off and fall out from the free surface of the carrier vehicle. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that during the transportation of the carrier vehicle, when the road surface is uneven or the moving speed is too fast, it is easy for the test board to slide off and fall out from the free end. In view of the above defects of the prior art, a moving device for fixing a test board is provided.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] Construct a moving device for fixing a test board, including a vehicle body, a test board placement area and a moving device, wherein the test board placement area and the moving device are arranged on the vehicle body; among them, it includes: a first movable rod and a reset component; the vehicle body includes a first free surface and a second free surface; the first movable rod is arranged on the vehicle body and is used to limit the first free surface; the reset component is arranged on the vehicle body, the reset component includes a reset member and a second movable rod, one end of the reset member is arranged inside the vehicle body, the other end is connected to the second movable rod, and the second movable rod is movably arranged on the vehicle body; the reset component is used to limit the second free surface.

[0008] As a further improvement of the utility model, both sides of the test board placement area respectively constitute the first free surface and the second free surface.

[0009] As a further improvement of the present utility model, the vehicle body further includes a side frame. The first movable rod is provided on the side frame of the vehicle body facing the first free surface, and a reset assembly is provided on the side frame of the vehicle body facing the second free surface.

[0010] As a further improvement of the present utility model, it further includes a box body. The box body is provided with an ejector rod, and the ejector rod is arranged corresponding to the reset assembly; the box body is provided with a plurality of card slots, and the card slots are arranged corresponding to the test plate placement area.

[0011] As a further improvement of the present utility model, the vehicle body is provided with an arc-shaped groove, and the second movable rod moves in the arc-shaped groove.

[0012] As a further improvement of the present utility model, the side frame of the vehicle body is provided with corresponding sliding structures, and each pair of corresponding sliding structures forms a test plate placement area.

[0013] As a further improvement of the present utility model, the sliding structure of the vehicle body is provided with a placement area, and the second movable rod can move in the placement area.

[0014] As a further improvement of the present utility model, one end of the vehicle body facing the second free surface is provided with a cavity, and the reset member is embedded in the cavity.

[0015] As a further improvement of the present utility model, the length of the test plate placement area is greater than the length of the test plate.

[0016] As a further improvement of the present utility model, a pulley is provided on the side surface of the second movable rod, and the pulley is horizontally arranged with the test plate placement area.

[0017] As a further improvement of the present utility model, the first free surface is provided with a fixing structure, and the first free end of the first movable rod penetrates through the fixing structure; a protruding portion is provided at the first free end, a limiting groove is provided in the fixing structure, and the protruding portion is arranged in the limiting groove.

[0018] As a further improvement of the present utility model, the moving device includes rollers, and the rollers are movably arranged at the bottom of the vehicle body.

[0019] The beneficial effects of the present utility model are as follows: A resetable component, a test board placement area, and a moving device are provided on the vehicle body, and the vehicle body has a first free surface and a second free surface; the provided resetable component can be used to limit the second free surface, and the provided first movable rod can limit the first free surface, preventing the test board from slipping out from the first free surface or the second free surface when being transported by the moving device in case of uneven road surface or too fast moving speed, and ensuring that the test board can smoothly slide out from the vehicle body and be inserted into the box for testing. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further explain the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0021] Figure 1 is the overall structure diagram of a moving device for fixing a test board in an embodiment of the present utility model;

[0022] Figure 2 is the rear view schematic diagram of a moving device for fixing a test board in an embodiment of the present utility model;

[0023] Figure 3 is of the present utility model Figure 2 cross-sectional schematic diagram at A-A;

[0024] Figure 4 is the state schematic diagram of the convex part located in the second limiting groove in the present utility model;

[0025] Figure 5 is the three-dimensional schematic diagram of another angle of a moving device for fixing a test board in an embodiment of the present utility model;

[0026] Figure 6 is of the present utility model Figure 5 local enlarged schematic diagram at Q;

[0027] Figure 7 is the three-dimensional schematic diagram of the movable rod of the present utility model;

[0028] Figure 8 is the state schematic diagram when the movable rod of the present utility model is in the second position;

[0029] Figure 9 is the left view schematic diagram of a moving device for fixing a test board in an embodiment of the present utility model;

[0030] Figure 10 is of the present utility model Figure 9Schematic cross-sectional view taken along line B-B;

[0031] Figure 11 is the present utility model Figure 10 Schematic enlarged partial view at position I of the present utility model;

[0032] Figure 12 is the three-dimensional schematic view of the reset member of the present utility model;

[0033] Figure 13 is the three-dimensional schematic view of the box body of the present utility model;

[0034] Figure 14 is the three-dimensional schematic view from another angle of a moving device for fixing a test board in an embodiment of the present utility model.

[0035] Reference numerals: vehicle body 1, test board placement area 2, first movable rod 3, resetable assembly 4, moving device 6, test board 21, side frame 11, top frame 12, reset member 41, second movable rod 42, arc groove 13, placement area 14, cavity 15, sliding structure 16, box body 5, ejector rod 51, card slot 52, pulley 421, fixing structure 111, first free end 31, convex portion 311, limiting groove 112, first limiting groove 101, second limiting groove 102, roller 17. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] As Figures 1-12As shown in the figure, it is a schematic diagram of a moving device for fixing a test board provided by an embodiment of the present invention, which can prevent the test board 21 from slipping out of the vehicle body 1 during transportation when the speed is too fast or the road surface is uneven, and can ensure that the test board 21 smoothly slides out of the vehicle body 1 and is inserted into the box body 5 for testing; a moving device for fixing a test board in this embodiment includes a vehicle body 1, a test board placement area 2, a moving device 6, a first movable rod 3 and a reset assembly 4; the test board placement area 2 and the moving device 6 are respectively arranged on the vehicle body 1; the vehicle body 1 includes a first free surface and a second free surface; the first movable rod 3 is arranged on the vehicle body 1, and the first movable rod 3 is used to limit the first free surface; the reset assembly 4 is arranged on the vehicle body 1, the reset assembly 4 includes a reset member 41 and a second movable rod 42, one end of the reset member 41 is arranged inside the vehicle body 1, the other end is connected to the second movable rod 42, and the second movable rod 42 is movably arranged on the vehicle body 1; the reset assembly 4 is used to limit the second free surface.

[0038] In this embodiment, the vehicle body 1 is provided with a plurality of test board placement areas 2, and each test board placement area 2 is respectively provided with a test board 21; the first movable rod 3 is arranged on the vehicle body 1 and is used to limit the space surface on one side of the vehicle body 1 and is defined as the first free surface; the second movable rod 42 is arranged on the vehicle body and is used to limit the space surface on the other side of the vehicle body 1 and is defined as the first free surface; the test board 21 can be loaded into or taken out from the test board placement area 2; the vehicle body 1 further includes a side frame 11, and the first movable rod 3 is arranged on the side frame 11 of the vehicle body 1 facing the first free surface, and the reset assembly 4 is arranged on the side frame 11 of the vehicle body 1 facing the second free surface.

[0039] Specifically, the vehicle body 1 includes a side frame 11 and a top frame 12, the side frame 11 is connected to the top frame 12, the moving device 6 is provided below the side frame 11, one or more test board placement areas 2 are provided inside the side frame 11, and the first movable rod 3 and the reset assembly 4 are respectively arranged on both sides of the side frame, which are respectively used to limit the test board 21 from sliding out from the first free surface and the second free surface. When it is necessary to load the test board 21, the first movable rod 3 is unlocked, and when the test board 21 is loaded into the test board placement area 2, the first movable rod is in a fixed position, and the reset assembly 4 is in a fixed position. After the test board 21 is loaded, then the test board 21 is transported through the vehicle body 1. The first movable rod 3 limits the first free surface of the vehicle body 1, and the reset assembly 4 limits the second free surface of the vehicle body 1 to prevent the test board 21 from sliding out and falling from the second free surface when the moving speed is too fast or the road surface is uneven.

[0040] In a specific embodiment, both sides of the test board placement area 2 respectively constitute the first free surface and the second free surface.

[0041] There are two first movable rods 3, which are respectively arranged on the left and right sides of the side frame 11. Before placing the test plate 21, the first movable rod 3 is rotated so that the first movable rod 3 is in the second position (unlocked position), as Figure 8 shown. At this time, the first movable rod 3 is in the second position. Then, the test plate 21 is respectively aligned with the test plate placement area 2, and the test plate 21 is slid into the test plate placement area 2. After the placement is completed, the first movable rod 3 is rotated so that the first movable rod 3 is in the first position (fixed position).

[0042] Specifically, as Figure 8 shown, both ends of the vehicle body 1 have spatial surfaces, namely the first free surface and the second free surface. The first movable rod 3 is used to limit the first free surface, and the reset assembly 4 is used to limit the second free surface to prevent the test plate 21 from falling on the first or second free surface during transportation.

[0043] In a specific embodiment, the vehicle body 1 further includes a side frame 11. A first movable rod 3 is arranged on the side frame 11 of the vehicle body 1 facing the first free surface, and a reset assembly 4 is arranged on the side frame 11 of the vehicle body 1 facing the second free surface.

[0044] Specifically, the vehicle body 1 includes a side frame 11 and a top frame 12. The side frame 11 and the top frame 12 form the base of the vehicle body 1. The first movable rod 3 is arranged on the side frame 11 of the vehicle body 1 facing the first free surface, and the first movable rod 3 can be located on the surface of the side frame 11. The reset assembly 4 is arranged on the side frame 11 of the vehicle body 1 facing the second free surface, and the reset assembly 4 can be located inside the side frame 11.

[0045] In a specific embodiment, the reset assembly 4 includes a reset member 41 and a second movable rod 42. The reset member 41 is a torsion spring with elasticity, and the reset member 41 is arranged on both sides of the side frame 11, as Figure 3 shown. One end of the reset member 41 is fixed inside the side frame 11, as Figure 11 shown. The other end of the reset member 41 is fixed inside the second movable rod 42. When the second movable rod 42 is rotated to the second position, the reset member 41 will be squeezed, and at this time, the reset member 41 will deform.

[0046] In the above embodiments, in actual situations, the first movable rod 3 and / or the reset assembly 4 can be set to one, and it can also prevent the test plate 21 from falling. Setting the first movable rod 3 and / or the reset assembly 4 to two can achieve the best fixing effect and have higher stability.

[0047] In an embodiment, it includes a box body 5. The box body 5 is provided with an ejector rod 51, and the ejector rod 51 is arranged corresponding to the reset assembly 4; the box body 5 is provided with a plurality of card slots 52, and the card slots 52 are arranged corresponding to the test plate placement area 2.

[0048] Please refer to Figures 1-13 , in an embodiment of the present utility model, ejector rods 51 are respectively provided on both sides of the box body 5. When the vehicle body 1 is pushed into the box body 5, the ejector rods 51 will contact the second movable rod 42 provided on the reset assembly 4 and apply a force to the second movable rod 42, causing the second movable rod 42 to rotate along the arc-shaped groove 13, and finally placing the second movable rod 42 in the placement area 14; then the test board 21 in the test board placement area 2 is pushed out, causing the reset assembly 4 to reset, so that the test board 21 will not fall from the second free surface after the next placement.

[0049] In actual situations, when there is one reset assembly 4, one ejector rod 51 can also be provided and corresponding to the reset assembly 4.

[0050] Please refer to Figure 1 and Figure 13 , in an embodiment of the present utility model, the box body 5 is provided with a plurality of card slots 52, which are respectively arranged corresponding to the test board placement area 2 and are used for placing the test board 21; after the vehicle body 1 is pushed into the box body 5, the test board 21 in the test board placement area 2 is pushed out, so that the test board enters the card slot 52 for testing.

[0051] In a specific embodiment, the operator moves the vehicle body 1 to the high-temperature test box, that is, the box body 5. At this time, the reset assembly 4 provided on the vehicle body 1 will contact the ejector rod 51. At this time, the ejector rod 51 will cause the reset assembly 4 to rotate. When the ejector rod 51 is not in contact with the reset assembly 4, the reset assembly 4 is in the first position; as Figure 2 shown, at this time the second movable rod 42 is in the first position. When the vehicle body 1 is at a certain distance inside the box body 5, the ejector rod 51 will abut against the reset assembly 4, causing the reset assembly 4 to be in the second position, as Figure 8 shown, at this time the second movable rod 42 is in the second position; when the reset assembly 4 is in the second position, the operator can insert the test board 21 into the box body 5, and then the operator pushes the vehicle body 1 outwards. At this time, the ejector rod 51 is away from the reset assembly 4, and then the reset assembly 4 resets until it returns to the first position, and then the test board 21 in the box body 5 is subjected to a high-temperature test.

[0052] Specifically, when the ejector rod 51 contacts the second movable rod 42, as the distance between the vehicle body 1 and the box body 5 approaches, the ejector rod 51 will apply a pressure to the second movable rod 42, and the second movable rod 42 will squeeze the reset member 41, causing the reset member 41 to deform; when the vehicle body 1 is pulled out of the box body 5, the reset member 41 releases elastic potential energy and resets in the direction of the first position, driving the second movable rod 42 to reset, so that when the test board 21 is installed on the vehicle for the next time, the test board 21 will not slide out from the second free surface.

[0053] Please refer to Figure 2 and Figure 4 In an embodiment of the present utility model, the vehicle body 1 is provided with an arc-shaped groove 13, and the second movable rod 42 moves within the arc-shaped groove 13.

[0054] In one embodiment, the second movable rod 42 moves within the arc-shaped groove 13, and its movement trajectory is arc-shaped; in a specific embodiment, the second movable rod 42 is in the first position, at this time, the second free surface is limited to prevent the test plate 21 from falling from the second free surface; under the action of an external force, the second movable rod 42 rotates along the arc-shaped groove 13.

[0055] In one embodiment, sliding structures 16 corresponding to each other are provided on both sides of the vehicle body 1, and each pair of corresponding sliding structures 16 constitutes a test plate placement area 2.

[0056] Please refer to Figure 1 and Figure 2 Specifically, sliding structures 16 corresponding to each other are provided on both sides of the vehicle body 1, the corresponding sliding structures 16 constitute a test plate placement area 2, and the length of the sliding structure 16 is greater than the length of the test plate 21, so that the test plate 21 can slide within the sliding structure 16; in a specific embodiment, the sliding structure 16 is a groove structure, the groove structures are respectively provided on both sides of the vehicle body 1, and the groove openings of the groove structures are arranged corresponding to each other.

[0057] In one embodiment, the sliding structure 16 of the vehicle body 1 is provided with a placement area 14, and the second movable rod 42 can move within the placement area 14.

[0058] Please refer to Figures 4-12 In an embodiment of the present utility model, when the second movable rod 42 is placed within the placement area 14, the second movable rod 42 is in the second position; after the second movable rod 42 is extruded by an external force, it rotates along the arc-shaped groove 13 until it is located within the placement area 14, which can ensure that it does not affect the sliding out of the test plate 21.

[0059] Specifically, the placement area 14 can be a groove structure, and the second movable rod 42 can be placed within the groove structure after being extruded by an external force. The placement area 14 can be a hollow structure, and the second movable rod 42 can be placed at the hollow structure after being extruded by an external force.

[0060] In one embodiment, a cavity 15 is provided at one end of the vehicle body 1 facing the second free surface, and the reset member 41 is embedded within the cavity 15.

[0061] Please refer to Figure 1 and Figure 11In one embodiment of the utility model, cavities 15 are respectively provided on both sides of the side frame 11, and the reset members 41 are respectively embedded in the cavities 15, and the reset members 41 can move in the cavities 15. The cavity 15 can be formed on the side frame 11, or the cavity 15 can be formed by the side frame 11 and the top frame 12. In actual situations, when there is one resettable component 4, there can also be one cavity 15.

[0062] In one embodiment, the length of the test board placement area 2 is greater than the length of the test board 21 .

[0063] Please refer to Figure 1 In one embodiment of the utility model, the length of the test board placement area 2 is greater than the length of the test board 21, and the test board 21 can move in the test board placement area 2. When the ejection rod 51 ejects the resettable component 4, the test board 21 can move in the test board placement area 2 to avoid the resettable component 4 being resisted by the ejection rod 51, the test board 21 has no position displacement, and the second movable rod 42 cannot reach the second position.

[0064] In one embodiment, a pulley 421 is disposed on the side of the second movable rod 42 , and the pulley 421 is disposed horizontally with the test board placement area 2 .

[0065] Please refer to Figure 2 and Figure 14 In one embodiment of the utility model, a pulley 421 is provided on the side of the second movable rod 42, and the pulley 421 is arranged corresponding to the test board placement area 2; when the vehicle body 1 is pushed out, since the test board 21 is already located on the card slot 52, at this time, the second movable rod 42 is very easy to hit the test board 21. When the second movable rod 42 hits the test board 21, since the pulley 421 is provided on the side of the second movable rod 42, the resistance generated when contacting the test board 21 can be reduced, so that the second movable rod 42 can be smoothly pulled out of the box 5. When the operator pulls the vehicle body 1 out of the box 5, the resettable component 4 will be reset. During the reset of the resettable component 4, the pulley 421 provided on the side of the second movable rod 42 can contact the test board 21, reducing the resistance, so that the vehicle body 1 can be smoothly pulled out of the box 5.

[0066] In one embodiment, the first free surface is provided with a fixing structure 111, and the first free end 31 of the first movable rod 3 passes through the fixing structure 111; the first free end 31 is provided with a protrusion 311, and the fixing structure 111 is provided with a limiting groove 112, and the protrusion 311 is arranged in the limiting groove 112.

[0067] Please refer to Figures 1-7, specifically, a fixing structure 111 is provided on the first free surface of the vehicle body 1 to prevent the test plate 21 from falling off the first free surface; the first free end 31 of the first movable rod 3 penetrates through the fixing structure 111, and the sliding rod can rotate around the fixing structure 111; a plurality of protruding portions 311 are provided at the first free end 31 of the first movable rod 3, and the fixing structure 111 is provided with limiting grooves 112, and the protruding portions 311 are respectively arranged in the limiting grooves 112. In a specific embodiment, the fixing structure 111 is provided with a first limiting groove 101 and a second limiting groove 102, and the first limiting groove 101 and the second limiting groove 102 are arc-shaped; when the protruding portion 311 is located in the first limiting groove 101, the vehicle body 1 is in a state of placing the test plate 21, and when the protruding portion 311 is located in the second limiting groove 102, it is a limiting state of the first free surface of the vehicle body 1. In another specific embodiment, when the protruding portion 311 is located in the first limiting groove 101, the operator places the test plate 21 into the test plate placement area 2 on the first free surface. After the test plate 21 is placed in the test plate placement area 2, the first movable rod 3 rotates to place the protruding portion 311 in the second limiting groove 102 to limit the first free surface, so that the test plate 21 cannot fall off the first free surface.

[0068] In one embodiment, the moving device 6 is provided with rollers 17, and the rollers 17 are movably arranged at the bottom of the vehicle body 1.

[0069] Please refer to Figure 1 and Figure 14 , specifically, the rollers 17 are arranged at the bottom of the vehicle body 1 to drive the vehicle body 1 to move, so that the vehicle body 1 can carry the test plate 21 and move to the box body 5. In a specific embodiment, there are two groups of rollers 17, which are respectively arranged on both sides of the vehicle body 1, and two rollers 17 are arranged on each side, which is convenient for the vehicle body 1 to move in the front and rear directions; in another specific embodiment, the rollers 17 are arranged at the middle position of the vehicle body 1, and the rollers 17 are cylindrical, which can increase the contact area with the ground, so that the test plate 21 can be placed on the vehicle body 1 more stably.

[0070] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A moving device for fixing a test board, comprising a vehicle body, a test board placement area and a moving device. The test board placement area and the moving device are arranged on the vehicle body, and it is characterized in that, Comprising: A first movable rod and a reset assembly; The vehicle body includes a first free surface and a second free surface; The first movable rod is disposed on the vehicle body and is used to limit the first free surface; The reset assembly is disposed on the vehicle body. The reset assembly includes a reset member and a second movable rod. One end of the reset member is disposed inside the vehicle body, and the other end is connected to the second movable rod. And the second movable rod is movably disposed on the vehicle body; Wherein, the reset assembly is used to limit the second free surface.

2. The moving device for fixing the test board according to claim 1, characterized in that, Both sides of the test plate placement area respectively constitute the first free surface and the second free surface.

3. The moving device for fixing the test board according to claim 1, wherein, The vehicle body further includes a side frame. The first movable rod is disposed on the side frame of the vehicle body facing the first free surface, and the reset assembly is disposed on the side frame of the vehicle body facing the second free surface.

4. The moving device for fixing a test board according to claim 1, characterized in that, It further includes a box body. The box body is provided with an ejector rod, and the ejector rod is correspondingly arranged with the reset assembly; The box body is provided with a plurality of card slots, and the card slots are correspondingly arranged with the test plate placement area.

5. The moving device for fixing the test board according to claim 4, characterized in that, The vehicle body is provided with an arc-shaped groove, and the second movable rod moves in the arc-shaped groove.

6. The moving device for fixing the test board according to claim 3, characterized in that, The side frame of the vehicle body is provided with corresponding sliding structures, and each pair of corresponding sliding structures constitutes a test plate placement area.

7. The moving device for fixing the test board according to claim 6, characterized in that, The sliding structure of the vehicle body is provided with a placement area, and the second movable rod can move in the placement area.

8. The moving device for fixing the test board according to claim 1, characterized in that, One end of the vehicle body facing the second free surface is provided with a cavity, and the reset member is embedded in the cavity.

9. The moving device for fixing the test board according to claim 4, characterized in that, The length of the test plate placement area is greater than the length of the test plate.

10. The moving device for fixing the test board according to any one of claims 1-9, characterized in that The side surface of the second movable rod is provided with a pulley, and the pulley is horizontally arranged with the test plate placement area.

11. The moving device for fixing the test board according to claim 1, characterized in that, The first free surface is provided with a fixing structure, and the first free end of the first movable rod penetrates through the fixing structure; The first free end is provided with a convex portion, the fixing structure is provided with a limiting groove, and the convex portion is disposed in the limiting groove.

12. The moving device for fixing the test board according to claim 1, characterized in that, The moving device includes rollers, and the rollers are movably disposed at the bottom of the vehicle body.

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