Electronic installation and adjustment test box for electrician skill grade evaluation and assessment

Abstract

The invention belongs to the field of electronic test boxes, and provides an electrician skill grade evaluation and examination electronic installation and adjustment test box which comprises a shell and a cover plate, the cover plate is hinged to the shell, an installation plate is arranged in the shell, components are fixedly installed on the installation plate, multiple sets of first telescopic rods distributed at intervals are fixedly installed in the shell, and the first telescopic rods are fixedly installed on the shell. Two sets of supporting plates distributed in parallel at intervals are fixedly installed at the end of the first telescopic rod, a limiting ring is jointly slidably installed between the two sets of supporting plates, the first telescopic rod is located in the limiting ring, and the limiting ring is fixedly installed on the installation plate through a support. Compared with the prior art, the device has the beneficial effects that vibration is buffered through the first elastic piece, external vibration is prevented from directly acting on the component, the damping effect is achieved, damping in the horizontal direction is achieved through the second elastic piece, and the safety of the component is further improved through synchronous damping in the horizontal and vertical directions; and the probability of component damage caused by vibration is reduced.

Description

Technical Field

[0001] The invention belongs to the field of electronic test boxes, and in particular relates to an electronic assembly and adjustment test box for evaluating and assessing electrician skill levels. Background Art

[0002] The electronic assembly and adjustment test box for electrician skill level evaluation and assessment is an easy-to-carry assessment equipment that meets the requirements of primary, intermediate and advanced electronic assembly and adjustment technical modules for electrician professional skill level evaluation. It is a foldable and openable structure device.

[0003] Patent application publication number CN211375973U relates to an electronic and electrical assembly test box, an electronic and electrical assembly test box, comprising a base and a cover body flipped and connected to the base, a power supply and a panel being arranged in the cover body, at least one meter head and a plug being arranged on the panel, a workbench being arranged in the base, at least one breadboard and a circuit board being arranged on the workbench, a power socket being arranged on the outer side of the top end of the cover body, and the power socket being electrically connected to the power supply in the cover body, the panel and the workbench in the base. This patent provides an electronic and electrical assembly test box with a simple structure, which is used for teaching and training of assembly, debugging and welding of electronic circuits. However, during the transportation and movement, the test box is generally placed on a conveyor vehicle, and vibration will be generated during the transportation process. The vibration will cause damage to the device and cause damage to the internal components of the test box. Summary of the invention

[0004] The purpose of the present invention is to provide an electronic assembly and adjustment test box for evaluating and assessing electrician skill levels, aiming to solve the technical problem in the prior art that internal components of the test box are damaged due to vibration during transportation and storage.

[0005] The present invention is implemented in this way: an electronic assembly and adjustment test box for electrician skill level evaluation and assessment comprises a shell and a cover plate, the cover plate is hinged to the shell, a mounting plate is arranged in the shell, components are fixedly mounted on the mounting plate, a plurality of groups of first telescopic rods distributed at intervals are fixedly mounted in the shell, two groups of support plates distributed in parallel at intervals are fixedly mounted on the ends of the first telescopic rods, a limiting ring is slidably mounted between the two groups of support plates, the first telescopic rod is located in the limiting ring and the limiting ring is fixedly mounted on the mounting plate through a bracket, a plurality of groups of first elastic members distributed around the first telescopic rod are fixedly mounted on the inner bottom surface of the shell, and one end of the first elastic member away from the bottom surface of the shell is fixedly connected to the support plate;

[0006] A gap is set between the side surface of the mounting plate and the inner wall of the shell, and ball bearings are rotatably installed on the side surfaces of the mounting plate. Push plates are set at positions corresponding to the ball bearings on the inner wall of the shell. The push plates are mounted on the side walls of the shell through second telescopic rods. Multiple groups of second elastic members distributed around the second telescopic rods are fixedly installed on the inner wall of the shell. One end of the second elastic member away from the inner wall of the shell is fixedly connected to the push plate. In an initial state, the ball bearings are in contact with the push plate and the second elastic member is in a compressed state.

[0007] Preferably, mounting columns are fixedly installed at the four corners of the inner bottom surface of the shell, and upper baffles and lower baffles are slidably installed on multiple groups of mounting columns. The upper baffle and the lower baffle have the same structure and are symmetrically distributed. The upper baffle is arranged as interconnected horizontal and vertical sections of a ring structure. The horizontal section of the upper baffle is in sliding contact with the inside of the shell, and the length and width of the vertical section of the upper baffle are smaller than the mounting plate. Third elastic members distributed around the mounting columns are fixedly installed on the horizontal sections of the upper baffle and the lower baffle, and the fixed ends of the third elastic members are fixedly connected to the mounting columns. In the initial state, the third elastic member is in a compressed state and the upper baffle and the lower baffle are in conflict with the mounting plate.

[0008] Preferably, two groups of symmetrically distributed first pressure plates are fixedly installed on the lower baffle, the first pressure plate passes through the horizontal section of the upper baffle, the first pressure plate is slidably connected to the upper baffle, the first pressure plate is used in conjunction with the second pressure plate fixedly installed on the cover plate, when the cover plate is closed, the second pressure plate pushes the lower baffle to move downward through the first pressure plate, and when the lower baffle moves downward, the upper baffle is driven to move upward synchronously through the connecting unit.

[0009] Preferably, the connecting unit includes a rotating shaft, which is provided with multiple groups and rotatably installed on the inner wall of the shell. The multiple groups of rotating shafts are symmetrically distributed and located between the horizontal sections of the upper baffle and the lower baffle. A gear is fixedly installed on one end of the rotating shaft away from the inner wall of the shell, and parallel racks are meshed on both sides of the gear. The racks are parallel to the mounting columns and the two groups of racks are fixedly connected to the upper baffle and the lower baffle respectively.

[0010] Preferably, two groups of symmetrically distributed second grooves are provided on the end surface of the shell, a lifting plate is slidably installed in the second groove, a connecting plate is provided on the lifting plate, one end of the connecting plate away from the lifting plate is fixedly connected to the cover plate, the connecting plate is an arc-shaped structure and the circle where the connecting plate is located is located on the rotation axis of the cover plate, and a limit block for limiting the height of the lifting plate is fixedly installed in the second groove.

[0011] Preferably, a connecting frame is fixedly mounted on the lifting plate, a connecting rod is arranged in the connecting frame, and the connecting rod is fixedly connected to the connecting plate.

[0012] Preferably, a first groove is provided on the inner wall of the connection position between the shell and the cover plate, and the height of the first groove is higher than the height of the mounting plate. A blowing pipe is fixedly installed in the first groove, and the blowing pipe is located on the side of the opening of the first groove and has multiple groups of spaced-apart blowing holes. Both ends of the blowing pipe are connected with connecting hoses, the connecting hose is located in the second groove and the end of the connecting hose away from the blowing pipe is fixedly connected to the lifting plate, and the connecting hose is connected to the cavity below the lifting plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When vibration occurs in the vertical direction, the mounting plate can move up and down to stretch and compress the first elastic member, and then the vibration is buffered by the first elastic member to prevent external vibration from directly acting on components, thereby achieving shock absorption and improving the safety of components. When vibration occurs in the horizontal direction, the mounting plate can move in the horizontal plane. When the mounting plate moves in the horizontal direction, the limit ring will slide between the two sets of support plates to ensure that there is no impact on the shock absorption in the vertical direction. When the mounting plate moves in the horizontal plane, the second elastic member on the corresponding side will be further compressed and elongated, and shock absorption in the horizontal direction is achieved by the second elastic member. Through synchronous shock absorption in the horizontal and vertical directions, the safety of components is further improved, and the probability of damage to components caused by vibration is reduced.

[0015] 2. When in use, after the cover is opened, the upper baffle and the lower baffle are moved toward one side of the mounting plate under the action of the third elastic member. Due to the setting of the gear and the rack, the upper baffle and the lower baffle can move toward each other synchronously. Finally, the upper baffle and the lower baffle are in contact with the mounting plate. Under the action of the third elastic member, the mounting plate is clamped and fixed, ensuring the stability of the mounting plate of the test box during use and the stability of the experimental process. When not in use, the cover is closed, the second pressing plate will contact the first pressing plate and push the lower baffle to move downward. During the downward movement of the lower baffle, the upper baffle is driven to move upward synchronously through the gear and the rack. When the upper baffle and the lower baffle move, the third elastic member is further compressed, thereby releasing the clamping and fixing of the upper baffle and the lower baffle to the mounting plate. At this time, the mounting plate can be in an active state, and shock absorption and buffering can be achieved through the components in the shell. The state of the mounting plate can be automatically switched according to whether the test box is in use, ensuring that the mounting plate is in a stable state during the test, and the mounting plate is in an active vibration reduction state when not in use, reducing the probability of component damage and improving the practicality and flexibility of the equipment.

[0016] 3. When the cover is opened, the upper baffle and the lower baffle can close the gap between the mounting plate and the inner wall of the shell to prevent dust from entering and accumulating inside the shell during use, thereby ensuring the cleanliness of the inside of the shell and preventing dust accumulation from causing heat dissipation and damage to the electrical components in the shell, thereby ensuring the stable operation of the equipment.

[0017] 4. The cover is closed when not in use. When the cover is closed, the connecting plate pushes the lifting plate to move downward in the second groove. When the lifting plate moves downward, the space in the area below it is compressed, so that the air in the space will be transported to the blowing pipe through the connecting hose, and then the air is blown out horizontally from the blowing holes. The air blown out through the blowing holes is blown to the components on the mounting plate, so as to blow and clean the components on the mounting plate and reduce the accumulation of dust on the components. At the same time, the air flow speed in the area where the components are located is accelerated, so that the air can carry the dust to leave the area from the opening of the shell and the cover, further reducing the dust content in the shell after the cover is closed, avoiding a large amount of dust accumulation on the components, ensuring the stable and safe use of the components, and ensuring the stability of the test chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure in the present invention.

[0020] Figure 3 It is a structural schematic diagram of the mounting plate in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure inside the shell of the present invention.

[0022] Figure 5 for Figure 2 A magnified schematic diagram of the A1 region in the middle.

[0023] Figure 6 for Figure 2 A magnified schematic diagram of the A2 region in the middle.

[0024] Figure 7 for Figure 3 A magnified schematic diagram of the A3 region in the middle.

[0025] Figure 8 It is a schematic diagram of the structure of the second groove in the present invention.

[0026] Fig. 9 for Figure 8 Schematic diagram of the enlarged A4 region.

[0027] Fig.10 for Figure 8 Schematic diagram of the enlarged A5 region.

[0028] In the accompanying drawings: 1. shell; 2. cover plate; 3. mounting plate; 4. components; 5. bracket; 6. limit ring; 7. first telescopic rod; 8. first elastic member; 9. support plate; 10. ball; 11. second telescopic rod; 12. second elastic member; 13. push plate; 14. mounting column; 15. upper baffle plate; 16. third elastic member; 17. lower baffle plate; 18. first pressure plate; 19. second pressure plate; 20. rotating shaft; 21. gear; 22. rack; 23. first groove; 24. second groove; 25. blowing pipe; 26. blowing hole; 27. lifting plate; 28. limit block; 29. ​​connecting hose; 30. connecting frame; 31. connecting plate; 32. connecting rod; 33. connecting unit. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1-Figure 7 As shown, an electronic assembly and adjustment test box for electrician skill level evaluation and assessment provided by the present invention includes a shell 1 and a cover plate 2, the cover plate 2 is hinged to the shell 1, a mounting plate 3 is arranged in the shell 1, components 4 are fixedly mounted on the mounting plate 3, a plurality of groups of first telescopic rods 7 distributed at intervals are fixedly mounted in the shell 1, two groups of support plates 9 distributed in parallel at intervals are fixedly mounted on the ends of the first telescopic rods 7, a limiting ring 6 is slidably installed between the two groups of support plates 9, the first telescopic rod 7 is located in the limiting ring 6 and the limiting ring 6 is fixedly mounted on the mounting plate 3 through a bracket 5, a plurality of first elastic members 8 distributed around the first telescopic rod 7 are fixedly mounted on the inner bottom surface of the shell 1, and one end of the first elastic member 8 away from the bottom surface of the shell 1 is fixedly connected to the support plate 9.

[0032] A gap is set between the side surface of the mounting plate 3 and the inner wall of the shell 1, and the side surfaces of the mounting plate 3 are rotatably installed with balls 10, and push plates 13 are set at positions corresponding to the balls 10 on the inner wall of the shell 1. The push plates 13 are installed on the side walls of the shell 1 through the second telescopic rod 11, and multiple groups of second elastic members 12 distributed around the second telescopic rod 11 are fixedly installed on the inner wall of the shell 1. One end of the second elastic member 12 away from the inner wall of the shell 1 is fixedly connected to the push plate 13. In the initial state, the ball 10 contacts the push plate 13 and the second elastic member 12 is in a compressed state.

[0033] In actual application of this embodiment, the lock on the shell 1 is opened, and the cover 2 is opened, then the component 4 can be selected and connected through the connecting wire. After the circuit connection is completed, the electronic assembly test can be carried out. After the test is completed, the connection between the circuit and the component 4 is released and the cover 2 is closed.

[0034] When the shell 1 vibrates during the movement, when vibration occurs in the vertical direction, the mounting plate 3 can move up and down to stretch and compress the first elastic member 8, and then the vibration is buffered by the first elastic member 8 to prevent external vibration from directly acting on the component 4, thereby achieving shock absorption and improving the safety of the component 4. When vibration occurs in the horizontal direction, the mounting plate 3 can move in the horizontal plane. When the mounting plate 3 moves in the horizontal direction, the limit ring 6 will slide between the two groups of support plates 9 to ensure that there is no impact on the shock absorption in the vertical direction. When the mounting plate 3 moves in the horizontal plane, the second elastic member 12 on the corresponding side is further compressed and elongated, and shock absorption in the horizontal direction is achieved by the second elastic member 12. Through synchronous shock absorption in the horizontal and vertical directions, the safety of the component 4 is further improved, and the probability of damage to the component 4 due to vibration is reduced.

[0035] In an example of the present embodiment, the first elastic member 8 and the second elastic member 12 are respectively the first spring and the second spring, and may of course be other elastic members such as elastic balls. The first spring is used to buffer the vibration in the vertical direction, and the second spring is used to buffer the vibration in the horizontal direction.

[0036] like Figure 1-Figure 6 As shown, an electronic assembly and adjustment test box for electrician skill level evaluation and assessment provided by the present invention is provided. Mounting columns 14 are fixedly installed at the four corners of the inner bottom surface of the shell 1. Upper baffles 15 and lower baffles 17 are slidably installed on multiple groups of mounting columns 14. The upper baffles 15 and the lower baffles 17 have the same structure and are symmetrically distributed. The upper baffle 15 is arranged as a ring structure with interconnected horizontal and vertical sections. The horizontal section of the upper baffle 15 is in sliding contact with the inside of the shell 1. The length and width of the vertical section of the upper baffle 15 are both smaller than the mounting plate 3. The third elastic member 16 distributed around the mounting column 14 is fixedly installed on the horizontal sections of the upper baffle 15 and the lower baffle 17. The fixed end of the third elastic member 16 is fixedly connected to the mounting column 14. In the initial state, the third elastic member 16 is in a compressed state and the upper baffle 15 and the lower baffle 17 are both in conflict with the mounting plate 3.

[0037] Specifically, two groups of symmetrically distributed first pressure plates 18 are fixedly installed on the lower baffle 17, and the first pressure plates 18 pass through the horizontal section of the upper baffle 15. The first pressure plates 18 are slidably connected to the upper baffle 15. The first pressure plates 18 are used in conjunction with the second pressure plates 19 fixedly installed on the cover plate 2. When the cover plate 2 is closed, the second pressure plates 19 push the lower baffle 17 downward through the first pressure plates 18. When the lower baffle 17 moves downward, the upper baffle 15 is driven to move upward synchronously through the connecting unit 33.

[0038] Specifically, the connecting unit 33 includes a rotating shaft 20, which is provided with multiple groups and rotatably installed on the inner wall of the shell 1. The multiple groups of rotating shafts 20 are symmetrically distributed and located between the horizontal sections of the upper baffle 15 and the lower baffle 17. A gear 21 is fixedly installed on one end of the rotating shaft 20 away from the inner wall of the shell 1, and parallel racks 22 are meshed on both sides of the gear 21. The racks 22 are parallel to the mounting column 14, and the two groups of racks 22 are fixedly connected to the upper baffle 15 and the lower baffle 17 respectively.

[0039] In actual application of this embodiment, when the test box is used, the cover 2 is opened. After the cover 2 is opened, the upper baffle 15 and the lower baffle 17 are moved toward the side of the mounting plate 3 under the action of the third elastic member 16. Due to the setting of the gear 21 and the rack 22, the upper baffle 15 and the lower baffle 17 can move toward each other synchronously. Finally, the upper baffle 15 and the lower baffle 17 are in contact with the mounting plate 3. Under the action of the third elastic member 16, the mounting plate 3 is clamped and fixed, thereby ensuring the stability of the mounting plate 3 during the use of the test box and the stability of the experimental process.

[0040] When not in use, close the cover 2, the second pressure plate 19 will contact the first pressure plate 18 and push the lower baffle 17 to move downward. During the downward movement of the lower baffle 17, the gear 21 and the rack 22 drive the upper baffle 15 to move upward synchronously. When the upper baffle 15 and the lower baffle 17 move, they further compress the third elastic member 16, thereby releasing the clamping of the upper baffle 15 and the lower baffle 17 on the mounting plate 3. At this time, the mounting plate 3 can be in an active state, and shock absorption and buffering can be achieved through the components in the shell 1. The state of the mounting plate 3 can be automatically switched according to whether the test box is in use, thereby ensuring that the mounting plate 3 is in a stable state during the test. When not in use, the mounting plate 3 is in an active vibration reduction state, which reduces the probability of damage to the components 4 and improves the practicability and flexibility of the equipment.

[0041] When the cover 2 is opened, the upper baffle 15 and the lower baffle 17 can close the gap between the mounting plate 3 and the inner wall of the shell 1 to prevent dust from entering and accumulating inside the shell 1 during use, thereby ensuring the cleanliness of the inside of the shell 1 and preventing dust accumulation from causing heat dissipation and damage to the electrical components in the shell 1, thereby ensuring the stable operation of the equipment.

[0042] In an embodiment of the present invention, the third elastic member 16 is a third spring, and can also be other elastic members such as an elastic ball. The third spring is compressed to apply thrust to the upper baffle 15 and the lower baffle 17 .

[0043] like Figure 1-Figure 10 As shown, an electronic assembly and adjustment test box for electrician skill level evaluation and assessment provided by the present invention is provided. Two groups of symmetrically distributed second grooves 24 are opened on the end surface of the shell 1. A lifting plate 27 is slidably installed in the second groove 24. A connecting plate 31 is arranged on the lifting plate 27. The end of the connecting plate 31 away from the lifting plate 27 is fixedly connected to the cover plate 2. The connecting plate 31 is an arc-shaped structure and the circle where the connecting plate 31 is located is located on the rotation axis of the cover plate 2. A limit block 28 for limiting the height of the lifting plate 27 is fixedly installed in the second groove 24.

[0044] A connecting frame 30 is fixedly mounted on the lifting plate 27 . A connecting rod 32 is disposed in the connecting frame 30 . The connecting rod 32 is fixedly connected to the connecting plate 31 .

[0045] A first groove 23 is provided on the inner wall of the connection position between the shell 1 and the cover plate 2. The height of the first groove 23 is higher than that of the mounting plate 3. A blowing pipe 25 is fixedly installed in the first groove 23. The blowing pipe 25 is located on the side of the opening of the first groove 23 and has multiple groups of spaced blowing holes 26. Both ends of the blowing pipe 25 are connected with connecting hoses 29. The connecting hose 29 is located in the second groove 24 and the end of the connecting hose 29 away from the blowing pipe 25 is fixedly connected to the lifting plate 27. The connecting hose 29 is connected to the cavity below the lifting plate 27.

[0046] In actual application of this embodiment, when the cover 2 is opened, the cover 2 drives the lifting plate 27 to move upward in the second groove 24 through the connecting plate 31 and the connecting rod 32. When the cover 2 is opened, the connecting rod 32 moves in the connecting frame 30, thereby driving the lifting plate 27 to move upward. When the lifting plate 27 moves upward, the area below it is in a negative pressure state, and then the outside air can be sucked into this area through the blowing hole 26, the blowing pipe 25 and the connecting hose 29. When the cover 2 is rotated to a vertical state and continues to tilt backward at a set angle, the lifting plate 27 contacts with the limit block 28, and the limit block 28 prevents the lifting plate 27 from leaving the second groove 24, and keeps the cover 2 in a stable state.

[0047] When not in use, the cover 2 is closed. When the cover 2 is closed, the connecting plate 31 pushes the lifting plate 27 to move downward in the second groove 24. When the lifting plate 27 moves downward, the space in the area below it is compressed, so that the air in the space will be transported to the blowing pipe 25 through the connecting hose 29, and then the air is blown out horizontally from the blowing holes 26. The air blown out through the blowing holes 26 is blown to the components 4 on the mounting plate 3, so as to blow and clean the components 4 on the mounting plate 3 and reduce the accumulation of dust on the components 4. At the same time, the air flow speed in the area where the components 4 are located is accelerated, so that the air can carry the dust and leave the area from the opening of the shell 1 and the cover 2, further reducing the dust content in the shell 1 after the cover 2 is closed, avoiding the accumulation of a large amount of dust on the components 4, ensuring the stable and safe use of the components 4, and ensuring the stability of the use of the test box.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electronic assembly and adjustment test box for electrician skill level evaluation and assessment, comprising a housing (1) and a cover plate (2), wherein the cover plate (2) is hinged to the housing (1), and is characterized in that: A mounting plate (3) is arranged in the shell (1), and components (4) are fixedly mounted on the mounting plate (3); a plurality of groups of first telescopic rods (7) distributed at intervals are fixedly mounted in the shell (1); two groups of support plates (9) distributed in parallel at intervals are fixedly mounted at the ends of the first telescopic rods (7); a limit ring (6) is slidably mounted between the two groups of support plates (9); the first telescopic rod (7) is located in the limit ring (6) and the limit ring (6) is fixedly mounted on the mounting plate (3) through a bracket (5); a plurality of groups of first elastic members (8) distributed around the first telescopic rods (7) are fixedly mounted on the inner bottom surface of the shell (1); and one end of the first elastic member (8) away from the bottom surface of the shell (1) is fixedly connected to the support plate (9); A gap is provided between the side of the mounting plate (3) and the inner wall of the shell (1), and balls (10) are rotatably mounted on the side of the mounting plate (3) and the inner wall of the shell (1). Push plates (13) are provided at positions on the inner wall of the shell (1) corresponding to the balls (10). The push plates (13) are mounted on the side wall of the shell (1) via a second telescopic rod (11). A plurality of groups of second elastic members (12) distributed around the second telescopic rod (11) are fixedly mounted on the inner wall of the shell (1). One end of the second elastic member (12) away from the inner wall of the shell (1) is fixedly connected to the push plate (13). In an initial state, the balls (10) are in contact with the push plate (13) and the second elastic member (12) is in a compressed state.

2. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 1 is characterized in that: The four corners of the inner bottom surface of the shell (1) are fixedly mounted with mounting columns (14); upper baffles (15) and lower baffles (17) are slidably mounted on multiple groups of the mounting columns (14); the upper baffles (15) and the lower baffles (17) have the same structure and are symmetrically distributed; the upper baffles (15) are arranged as horizontal sections and vertical sections of an annular structure that are interconnected; the horizontal section of the upper baffle (15) is in sliding contact with the inside of the shell (1); the length and width of the vertical section of the upper baffle (15) are both smaller than the length and width of the mounting plate (3); third elastic members (16) distributed around the mounting columns (14) are fixedly mounted on the horizontal sections of the upper baffles (15) and the lower baffles (17); the fixed ends of the third elastic members (16) are fixedly connected to the mounting columns (14); in an initial state, the third elastic member (16) is in a compressed state and the upper baffles (15) and the lower baffles (17) are both in contact with the mounting plate (3).

3. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 2 is characterized in that: Two groups of symmetrically distributed first pressure plates (18) are fixedly mounted on the lower baffle (17); the first pressure plates (18) penetrate the horizontal section of the upper baffle (15); the first pressure plates (18) are slidably connected to the upper baffle (15); the first pressure plates (18) cooperate with the second pressure plates (19) fixedly mounted on the cover plate (2); when the cover plate (2) is closed, the second pressure plates (19) push the lower baffle (17) to move downward through the first pressure plates (18); when the lower baffle (17) moves downward, the upper baffle (15) is driven to move upward synchronously through the connecting unit (33).

4. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 3 is characterized in that: The connecting unit (33) comprises a rotating shaft (20), wherein the rotating shaft (20) is provided with a plurality of groups and is rotatably mounted on the inner wall of the shell (1), wherein the plurality of groups of the rotating shafts (20) are symmetrically distributed and located between the horizontal sections of the upper baffle plate (15) and the lower baffle plate (17), wherein a gear (21) is fixedly mounted on one end of the rotating shaft (20) away from the inner wall of the shell (1), wherein racks (22) distributed in parallel are meshed on both sides of the gear (21), wherein the racks (22) are parallel to the mounting column (14), and the two groups of the racks (22) are respectively fixedly connected to the upper baffle plate (15) and the lower baffle plate (17).

5. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 1 is characterized in that: The end surface of the shell (1) is provided with two groups of symmetrically distributed second grooves (24), a lifting plate (27) is slidably mounted in the second grooves (24), a connecting plate (31) is arranged on the lifting plate (27), one end of the connecting plate (31) away from the lifting plate (27) is fixedly connected to the cover plate (2), the connecting plate (31) is an arc-shaped structure, and the circle where the connecting plate (31) is located is located on the rotation axis of the cover plate (2), and a limit block (28) for limiting the height of the lifting plate (27) is fixedly mounted in the second groove (24).

6. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 5 is characterized in that: A connecting frame (30) is fixedly mounted on the lifting plate (27), a connecting rod (32) is arranged inside the connecting frame (30), and the connecting rod (32) is fixedly connected to the connecting plate (31).

7. The electronic assembly and adjustment test box for electrician skill level evaluation and assessment according to claim 6 is characterized in that: A first groove (23) is provided on the inner wall of the connection position between the shell (1) and the cover plate (2), the height of the first groove (23) is higher than the height of the mounting plate (3), a blow pipe (25) is fixedly installed in the first groove (23), the blow pipe (25) is located on the side of the opening of the first groove (23) and has a plurality of groups of blow holes (26) distributed at intervals, both ends of the blow pipe (25) are connected with a connecting hose (29), the connecting hose (29) is located in the second groove (24) and the end of the connecting hose (29) away from the blowing pipe (25) is fixedly connected to the lifting plate (27), and the connecting hose (29) is connected to the cavity below the lifting plate (27).

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