Mobile auxiliary device for shielding performance detection

By designing a mobile auxiliary device, the controller and drive components are used to jointly control the position and movement of the radio source and detector inside and outside the shielding room, the problem of synchronous movement in the shielding performance detection of spent fuel transport containers is solved, and the detection efficiency and accuracy are improved. Reduced detection time.

CN222232364UActive Publication Date: 2024-12-24SHANGHAI APOLLO MACHINERY CO LTD
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Patent Information

Application Number
CN202420246000.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-01
Publication Date
2024-12-24
Estimated Expiration
2034-02-01

AI Technical Summary

Technical Problem

During the shielding performance detection process of spent fuel transport containers, it is difficult for the radio source and the detector to move simultaneously, resulting in too long detection time and personnel cannot conduct detection in the shielded room, which affects the accuracy and efficiency of the detection.

Method used

A mobile auxiliary device for shielding performance detection is designed. Through the lifting and lowering assembly and the driving assembly, the first and second controllers are used to control the position and movement of the radio source and the detector indoor and outdoor respectively to ensure that it remains during the detection process. Concentric and enables rapid debugging and proofreading through translation components.

Benefits of technology

This greatly reduces the time required for inspection, improves the accuracy and efficiency of inspection, ensures stable movement and position proofing of the radioactive source and detector, and reduces wear and contamination of lifting and translation components.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a mobile auxiliary device for shielding performance detection, and relates to the field of shielding detection.The mobile auxiliary device comprises a base, a stand column is arranged on the base, a first lifting plate and a second lifting plate are slidably arranged on the stand column, a lifting assembly is arranged on the stand column, and a first connecting rod is slidably arranged on the first lifting plate; a first driving assembly is arranged on the first lifting plate, a second connecting rod is arranged on the second lifting plate in a sliding mode, and a second driving assembly is arranged on the second lifting plate. The system further comprises a first controller and a second controller. The second controller is used outside the shielding chamber to control the first driving assembly and the second driving assembly to operate together, so that the first connecting rod and the second connecting rod drive the radioactive source and the detector to move synchronously, and detection can be carried out accurately; the radioactive source and the detector can be adjusted, moved and corrected in position by using the second controller outside the shielding chamber, so that the time required for detection is greatly reduced.
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Description

Technical Field

[0001] The present application relates to the field of shielding detection, and in particular to a mobile auxiliary device for shielding performance detection. Background Art

[0002] With the localization and independence of nuclear power equipment, the domestic manufacturing output of spent fuel transport containers has gradually increased, and domestic manufacturers have become more and more experienced in the key manufacturing processes of spent fuel transport containers. The key process in the manufacturing process of spent fuel transport containers is to ensure the shielding performance of the containers.

[0003] At present, since the working condition of spent fuel transport containers is to load radioactive spent fuel, the shielding performance test method of spent fuel transport containers is usually to use a radioactive source to test in a shielding room to detect the radiation dose passing through the container. When testing the shielding performance of a container, it is necessary to test multiple positions of the container. The conventional testing method is that the radioactive source is inside the container, the detector is outside the container, and the radioactive source and the detector need to be in a concentric position.

[0004] Because the shielded room is full of radiation during testing, personnel cannot conduct testing inside it. It is also difficult to ensure that the radiation source and detector are concentric and move synchronously during testing. After testing one area, personnel are required to enter the shielded room to adjust, move and calibrate the position before conducting testing in other areas. Therefore, the testing time is very long. Utility Model Content

[0005] In order to improve the accuracy of shielding performance detection and reduce the detection time, the present application provides a mobile auxiliary device for shielding performance detection.

[0006] The present application provides a mobile auxiliary device for shielding performance detection using the following technical solution:

[0007] A mobile auxiliary device for shielding performance detection, comprising a base, a column is arranged on the base, a first lifting plate and a second lifting plate are slidably arranged on the column in a vertical direction, a lifting assembly for driving the first lifting plate and the second lifting plate to lift and move in the vertical direction is arranged on the column, a first connecting rod is slidably arranged on the upper side of the first lifting plate in a horizontal direction, a first driving assembly for driving the first connecting rod to move horizontally is arranged on the first lifting plate, a second connecting rod is slidably arranged on the upper side of the second lifting plate in a horizontal direction, and a second driving assembly for driving the second connecting rod to move horizontally is arranged on the second lifting plate; and also comprising a first controller and a second controller, the first controller is located in a shielding room, the first controller is electrically connected to the lifting assembly, the first driving assembly and the second driving assembly and controls the operation of the lifting assembly, the first driving assembly and the second driving assembly, and the second controller is located outside the shielding room, the second controller is electrically connected to the first controller and controls the operation of the lifting assembly, the first driving assembly and the second driving assembly.

[0008] By adopting the above technical solution, the staff uses the first controller to control the lifting and movement of the first lifting plate and the second lifting plate in the shielding room, connects the first connecting rod to the radiation source, connects the second connecting rod to the detector, and then uses the first controller to separately control the first drive assembly or the second drive assembly, so that the radiation source and the detector are in a concentric position, closes the shielding room and performs a container shielding performance test, and the staff uses the second controller outside the shielding room to control the first drive assembly and the second drive assembly to operate together, so that the first connecting rod and the second connecting rod drive the radiation source and the detector to move synchronously, so that accurate detection can be performed, and at the same time, the staff uses the second controller to control the lifting assembly, the first drive assembly or the second drive assembly outside the shielding room, so that the radiation source and the detector can be adjusted, moved and proofread, which greatly reduces the time required for detection.

[0009] Preferably, the first driving assembly includes a first driving member and a first driving gear, the first driving member is fixedly arranged on the first lifting plate, the first driving gear is fixedly arranged at the driving end of the first driving member, a first supporting frame is arranged on the first lifting plate, a first supporting gear is rotatably arranged on the first supporting frame, a first rack is arranged on the bottom wall of the first connecting rod, and the first driving gear and the first supporting gear are both engaged with the first rack.

[0010] By adopting the above technical solution, when the first driving component drives the first connecting rod to move, the first driving member drives the first driving gear to rotate, and the first driving gear drives the first connecting rod to move through the first rack. At the same time, the first support frame supports the first connecting rod through the first supporting gear, so that the first support rod can move stably in the horizontal direction.

[0011] Preferably, the second driving assembly includes a second driving member and a second driving gear, the second driving member is fixedly arranged on the second lifting plate, the second driving gear is fixedly arranged at the driving end of the second driving member, a second supporting frame is arranged on the second lifting plate, a second supporting gear is rotatably arranged on the second supporting frame, a second rack is arranged on the bottom wall of the second connecting rod, and the second driving gear and the second supporting gear are both engaged with the second rack.

[0012] By adopting the above technical solution, when the second driving component drives the second connecting rod to move, the second driving member drives the second driving gear to rotate, and the second driving gear drives the second connecting rod to move through the second rack. At the same time, the second support frame supports the second connecting rod through the second supporting gear, so that the second support rod can move stably in the horizontal direction.

[0013] Preferably, the lifting assembly includes two third driving members, a lifting block, a first lead screw, a guide rail and a plurality of sliders, the two third driving members are fixedly arranged on the top end of the column, the two lifting blocks are respectively fixedly arranged on the first lifting plate and the second lifting plate, the two first lead screws are respectively arranged on the driving ends of the two third driving members and threaded through the two lifting blocks, the two guide rails are arranged on the column along the moving direction of the first lifting plate, the plurality of sliders are respectively fixedly arranged on the first lifting plate and the second lifting plate, and the sliders are slidably arranged on the guide rails.

[0014] By adopting the above technical solution, the third driving member drives the lifting block to move up and down through the first screw, the lifting block drives the first lifting plate or the second lifting plate to move up and down, the first lifting plate and the second lifting plate are moved up and down on the guide rail through the slider, and two third driving members are used to drive the first lifting plate and the second lifting plate to move respectively, so that the first lifting plate and the second lifting plate can be lifted and moved separately.

[0015] Preferably, accordion covers are provided on the upper and lower sides of the first lifting plate and the second lifting plate on the upright column, and the accordion covers are provided on the first lead screw and the guide rail.

[0016] By adopting the above technical solution, when the first lifting plate and the second lifting plate are lifted or lowered, the accordion cover can synchronously extend or shorten and cover the first lead screw and the guide rail, thereby preventing dust, dirt and other impurities from entering the lifting assembly, thereby reducing the wear and contamination of the first lead screw and the guide rail, and keeping the lifting assembly clean and operating normally.

[0017] Preferably, a translation plate is slidably arranged on the base along the horizontal and vertical movement direction of the first connecting rod, the column is arranged on the translation plate, a translation assembly for driving the translation plate to move is arranged in the base, and the first controller is electrically connected to the translation assembly.

[0018] By adopting the above technical solution, when debugging the positions of the radiation source and the detector, the staff uses the first controller to control the operation of the translation assembly, and the translation assembly drives the first connecting rod and the second connecting rod to move through the translation plate, so that the connection line between the radiation source and the detector is located in the diameter direction of the accommodation, thereby facilitating rapid debugging of the radiation source and the detector.

[0019] Preferably, the translation assembly includes a fourth driving member, a second lead screw, a guide rod and a translation block, the translation block is fixedly arranged at the bottom of the translation plate, the fourth driving member is arranged in the base, the second lead screw is arranged at the driving end of the fourth driving member and threadedly passes through the translation block, the guide rod is arranged in the base, the guide rod is parallel to the second lead screw and passes through the translation block.

[0020] By adopting the above technical solution, the fourth driving member drives the second lead screw to rotate, and the rotation of the second lead screw drives the translation block to move, and the translation block then drives the translation plate to move stably on the base. When the translation block moves, it slides on the guide rod, thereby making the sliding of the translation block more stable, thereby improving the stability of the movement of the translation plate.

[0021] Preferably, steel plate protective covers are provided on both sides of the base in the moving direction of the translation plate, and the steel plate protective covers are provided on the second lead screw and the guide rod.

[0022] By adopting the above technical solution, when the translation plate moves, the steel plate protective cover can synchronously extend or shorten and cover the second lead screw and guide rod, which can prevent dust, dirt and other impurities from entering the base, thereby reducing the wear and contamination of the second lead screw and guide rod, and keeping the translation assembly clean and operating normally.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The first controller is used to control the first drive assembly or the second drive assembly alone, so that the radiation source and the detector are in a concentric position. The staff uses the second controller outside the shielding room to control the first drive assembly and the second drive assembly to operate together, so that the first connecting rod and the second connecting rod drive the radiation source and the detector to move synchronously, so that accurate detection can be performed. The staff uses the second controller outside the shielding room to adjust, move and calibrate the position of the radiation source and the detector, thereby greatly reducing the time required for detection;

[0025] 2. The first connecting rod is supported by the first supporting frame and the first supporting gear, so that the first connecting rod is more stable when moving, and the second connecting rod is supported by the second supporting frame and the second supporting gear, so that the second connecting rod is more stable when moving;

[0026] 3. The translation assembly is controlled by the first controller to operate, and the translation assembly drives the first connecting rod and the second connecting rod to move through the translation plate, so that the connection line between the radiation source and the detector is located in the diameter direction of the accommodation, thereby facilitating rapid debugging of the radiation source and the detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the mobile auxiliary device for shielding performance testing in this application;

[0028] Figure 2 The mobile auxiliary device for shielding performance detection of this application is a partial structural schematic diagram highlighting the translation component;

[0029] Figure 3 The mobile auxiliary device for shielding performance detection of the present application is a schematic diagram highlighting the first controller and the second controller;

[0030] Figure 4 The mobile auxiliary device for shielding performance testing of this application is an exploded view of part of the structure of the lifting assembly to highlight the display;

[0031] Figure 5 The mobile auxiliary device for shielding performance testing in this application is an exploded view of a portion of the structure of the slider to highlight the display.

[0032] 1. The first drive member; 2. The second drive member; 3. The second drive member; 4. The second drive member; 5. The first drive member; 6. The first connecting rod; 7. The first driving assembly; 8. The second connecting rod; 9. The second driving assembly; 9. The second driving assembly; 10. The first controller; 11. The second controller; 12. The first supporting frame; 13. The first supporting gear; 14. The first rack; 15. The second supporting frame; 16. The second supporting gear; 17. The second rack; 18. The accordion cover; 19. The translation plate; 20. The translation assembly; 201. The fourth driving member; 202. The second screw; 203. The guide rod; 204. The translation block; 21. The steel plate protective cover. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] An embodiment of the present application discloses a mobile auxiliary device for shielding performance detection.

[0035] Reference Figure 1A mobile auxiliary device for shielding performance detection includes a base 1. The container to be tested is a cylindrical structure with one end open and placed in the horizontal direction. The base 1 is located at the open end of the container. A translation plate 19 is slidably installed on the base 1 along the horizontal and diameter directions of the container. A column 2 is fixedly installed on the translation plate 19 along the vertical direction. A first lifting plate 3 and a second lifting plate 4 are slidably installed on the column 2 along the vertical direction.

[0036] A first connecting rod 6 is slidably mounted on the first lifting plate 3 along the horizontal direction and the axis direction of the container through a slide rail, and a second connecting rod 8 is slidably mounted on the second lifting plate 4 along the horizontal direction and the axis direction of the container through a slide rail, and the first connecting rod 6 is parallel to the second connecting rod 8 and is located directly above the second connecting rod 8. The end of the first connecting rod 6 is fixedly connected to the radiation source, the end of the second connecting rod 8 is fixedly connected to the detector, and the first connecting rod 6 extends from the open end of the container into the container, and the second connecting rod 8 is located below the container.

[0037] Reference Figure 1 and Figure 2 A translation assembly 20 is installed in the base 1, and the translation assembly 20 drives the column 2 to move through the translation plate 19; a lifting assembly 5 is installed on the column 2, and the lifting assembly 5 can drive the first lifting plate 3 and the second lifting plate 4 to move separately or together; a first driving assembly 7 that drives the first connecting rod 6 to move is installed on the first lifting plate 3, and a second driving assembly 9 that drives the second connecting rod 8 to move is installed on the second lifting plate 4.

[0038] Reference Figure 3 A mobile auxiliary device for detecting shielding performance also includes a first controller 10 and a second controller 11. The first controller 10 is placed in the shielding room, and the first controller 10 is electrically connected to the translation assembly 20, the lifting assembly 5, the first drive assembly 7 and the second drive assembly 9, respectively, and the first controller 10 controls the translation assembly 20, the lifting assembly 5, the first drive assembly 7 and the second drive assembly 9. The second controller 11 is placed outside the shielding room, and the second controller 11 is electrically connected to the first controller 10, and the second controller 11 controls the translation assembly 20, the lifting assembly 5, the first drive assembly 7 and the second drive assembly 9.

[0039] Before inspecting the container, the staff uses the first controller 10 in the shielding room to control the operation of the translation assembly 20, the lifting assembly 5, the first drive assembly 7 and the second drive assembly 9, thereby driving the radiation source and the detector to move in multiple directions, so that the radiation source and the detector can be quickly adjusted to a concentric position.

[0040] When inspecting the container, the staff uses the second controller 11 outside the shielding room to control the first drive assembly 7 and the second drive assembly 9 to operate together, so that the first connecting rod 6 and the second connecting rod 8 drive the radiation source and the detector to move synchronously, thereby enabling accurate inspection. At the same time, the staff uses the second controller 11 to control the translation assembly 20, the lifting assembly 5, the first drive assembly 7 or the second drive assembly 9 outside the shielding room, thereby being able to adjust, move and calibrate the position of the radiation source and the detector, greatly reducing the time required for inspection.

[0041] Reference Figure 4 and Figure 5 Specifically, the first driving assembly 7 includes a first driving member 71 and a first driving gear 72. The first driving member 71 is fixedly mounted on the side wall of the first lifting plate 3 away from the column 2, and the first driving gear 72 is fixedly mounted on the driving shaft of the first driving member 71. A first support frame 12 is fixedly mounted on the side of the first lifting plate 3 away from the container, and a first supporting gear 13 is rotatably mounted on the top of the first supporting frame 12. A first rack 14 is fixedly mounted on the bottom wall of the first connecting rod 6 along its own length direction, and the first driving gear 72 and the first supporting gear 13 are both meshed with the first rack 14. In the present application, the first driving member 71 can be selected as a servo motor.

[0042] The first driving gear 72 and the first supporting gear 13 support the first connecting rod 6 through the first rack 14, so that the first supporting rod remains stable in the horizontal direction. The first driving member 71 drives the first driving gear 72 to rotate, and the first driving gear 72 drives the first connecting rod 6 to move stably in the horizontal direction through the first rack 14, thereby driving the radiation source to move stably along the axial direction of the container.

[0043] The second driving assembly 9 includes a second driving member 91 and a second driving gear 92. The second driving member 91 is fixedly mounted on the side wall of the second lifting plate 4 away from the column 2, and the second driving gear 92 is fixedly mounted on the driving shaft of the second driving member 91. A second support frame 15 is fixedly mounted on the side of the second lifting plate 4 away from the container, and a second supporting gear 16 is rotatably mounted on the top of the second supporting frame 15. A second rack 17 is fixedly mounted on the bottom wall of the second connecting rod 8 along its length direction, and the second driving gear 92 and the second supporting gear 16 are both meshed with the second rack 17. In the present application, the second driving member 91 can be selected as a servo motor.

[0044] The second driving gear 92 and the second supporting gear 16 support the second connecting rod 8 through the second rack 17, so that the second supporting rod remains stable in the horizontal direction. The second driving member 91 drives the second driving gear 92 to rotate, and the second driving gear 92 drives the second connecting rod 8 to move stably in the horizontal direction through the second rack 17, thereby driving the detector to move stably along the axial direction of the container.

[0045] When the first driving member 71 and the second driving member 91 operate simultaneously, the radiation source and the detector can move synchronously during detection, thereby making the detection result more accurate.

[0046] Reference Figure 2 The translation assembly 20 includes a fourth driving member 201, a second lead screw 202, a guide rod 203 and a translation block 204. The fourth driving member 201 is fixedly installed in the base 1, the second lead screw 202 is rotatably installed in the base 1 and is fixedly connected to the driving end of the fourth driving member 201, the guide rod 203 is installed in the base 1 along the moving direction of the translation plate 19 and is parallel to the second lead screw 202, the translation block 204 is fixedly installed on the bottom wall of the translation plate 19, and the second lead screw 202 is threaded through the translation block 204, and the guide rod 203 slides through the translation block 204. In the present application, the fourth driving member 201 can be selected as a servo motor.

[0047] The fourth driving member 201 drives the second lead screw 202 to rotate, the second lead screw 202 drives the translation block 204 to slide on the guide rod 203, the translation block 204 drives the translation plate 19 to slide on the base 1, and the translation plate 19 drives the column 2 to move, so that the position of the radiation source and the detector can be adjusted along the horizontal direction and the diameter direction of the container.

[0048] Reference Figure 1 Steel plate protective covers 21 are installed on both sides of the base 1 in the moving direction of the translation plate 19. When the translation plate 19 moves, the steel plate protective covers 21 can be extended and retracted and cover the second lead screw 202 and the guide rod 203 to protect it, preventing dust, dirt and other impurities from entering the base 1, thereby reducing the wear and pollution of the second lead screw 202 and the guide rod 203, and keeping the translation assembly 20 clean and operating normally.

[0049] Reference Figure 4 and Figure 5The lifting assembly 5 includes two third driving members 51, a lifting block 52, a first lead screw 53, a guide rail 54 and four sliders 55. The two third driving members 51 are fixedly mounted on the top of the column 2, and the first lead screw 53 is rotatably mounted on the side wall of the column 2 close to the first lifting plate 3 along the vertical direction, and the tops of the two first lead screws 53 are respectively fixedly connected to the driving ends of the two third driving members 51. In the present application, the third driving member 51 can be selected as a servo motor. The two lifting blocks 52 are respectively fixedly mounted on the side walls of the first lifting plate 3 and the second lifting plate 4 close to the column 2, and the two first lead screws 53 are respectively threaded through the two second lifting blocks 52. The third driving member 51 can drive the lifting block 52 to move up and down through the first lead screw 53, and then can drive the first lifting plate 3 and the second lifting plate 4 to move up and down.

[0050] Two guide rails 54 are fixedly mounted on the side wall of the column 2 close to the first lifting plate 3, and the guide rails 54 are mounted in the vertical direction, two sliders 55 are fixedly mounted on the side wall of the first lifting plate 3 close to the column 2, two sliders 55 are fixedly mounted on the side wall of the second lifting plate 4 close to the column 2, and four sliders 55 are slidably mounted on the two guide rails 54 in the vertical direction. When the first lifting plate 3 and the second lifting plate 4 are lifted and moved, the sliders 55 cooperate with the guide rails 54 to guide the first lifting plate 3 and the second lifting plate 4, so that the lifting and moving of the first lifting plate 3 and the second lifting plate 4 are more stable.

[0051] Reference Figure 1 The column 2 is provided with bellows covers 18 on both upper and lower sides of the first lifting plate 3 and on the lower side of the second lifting plate 4. The bellows covers 18 are fixedly connected to the first lifting plate 3 or the second lifting plate 4. When the first lifting plate 3 or the second lifting plate 4 is lifted or lowered, the bellows covers 18 can be extended and retracted accordingly and cover and protect the first lead screw 53 and the guide rail 54, preventing dust, dirt and other impurities from entering the side of the column 2 close to the first lifting plate 3, thereby reducing the wear and contamination of the first lead screw 53 and the guide rail 54, and keeping the lifting assembly 5 clean and operating normally.

[0052] The implementation principle of a mobile auxiliary device for shielding performance detection in an embodiment of the present application is as follows: when detecting a container, a staff member uses a second controller 11 outside the shielding room to control the first drive assembly 7 and the second drive assembly 9 to operate together, so that the first connecting rod 6 and the second connecting rod 8 drive the radiation source and the detector to move synchronously, thereby enabling accurate detection. At the same time, the staff member uses the second controller 11 to control the translation assembly 20, the lifting assembly 5, the first drive assembly 7 or the second drive assembly 9 outside the shielding room, thereby being able to adjust, move and calibrate the position of the radiation source and the detector, greatly reducing the time required for detection.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mobile auxiliary device for shielding performance detection, characterized in that: The invention comprises a base (1), wherein a column (2) is arranged on the base (1), a first lifting plate (3) and a second lifting plate (4) are slidably arranged on the column (2) in a vertical direction, a lifting assembly (5) for driving the first lifting plate (3) and the second lifting plate (4) to move up and down in a vertical direction is arranged on the column (2), a first connecting rod (6) is slidably arranged on the first lifting plate (3) in a horizontal direction, a first driving assembly (7) for driving the first connecting rod (6) to move horizontally is arranged on the first lifting plate (3), a second connecting rod (8) is slidably arranged on the second lifting plate (4) in a horizontal direction, and a second driving assembly (9) for driving the second connecting rod (8) to move horizontally is arranged on the second lifting plate (4); The device also includes a first controller (10) and a second controller (11), wherein the first controller (10) is located inside the shielding room, the first controller (10) is electrically connected to the lifting assembly (5), the first drive assembly (7) and the second drive assembly (9), and controls the operation of the lifting assembly (5), the first drive assembly (7) and the second drive assembly (9), and the second controller (11) is located outside the shielding room, the second controller (11) is electrically connected to the first controller (10) and controls the operation of the lifting assembly (5), the first drive assembly (7) and the second drive assembly (9).

2. A mobile auxiliary device for shielding performance detection according to claim 1, characterized in that: The first driving assembly (7) comprises a first driving member (71) and a first driving gear (72); the first driving member (71) is fixedly arranged on the first lifting plate (3); the first driving gear (72) is fixedly arranged at the driving end of the first driving member (71); a first supporting frame (12) is arranged on the first lifting plate (3); a first supporting gear (13) is rotatably arranged on the first supporting frame (12); a first rack (14) is arranged on the bottom wall of the first connecting rod (6); and the first driving gear (72) and the first supporting gear (13) are both meshed with the first rack (14).

3. A mobile auxiliary device for shielding performance detection according to claim 1, characterized in that: The second driving assembly (9) comprises a second driving member (91) and a second driving gear (92); the second driving member (91) is fixedly arranged on the second lifting plate (4); the second driving gear (92) is fixedly arranged at the driving end of the second driving member (91); a second supporting frame (15) is arranged on the second lifting plate (4); a second supporting gear (16) is rotatably arranged on the second supporting frame (15); a second rack (17) is arranged on the bottom wall of the second connecting rod (8); and the second driving gear (92) and the second supporting gear (16) are both meshed with the second rack (17).

4. The mobile auxiliary device for shielding performance detection according to claim 1, characterized in that: The lifting assembly (5) comprises two third driving members (51), a lifting block (52), a first lead screw (53), a guide rail (54) and a plurality of sliders (55); the two third driving members (51) are fixedly arranged at the top end of the column (2); the two lifting blocks (52) are respectively fixedly arranged on the first lifting plate (3) and the second lifting plate (4); the two first lead screws (53) are respectively arranged at the driving ends of the two third driving members (51) and threadedly pass through the two lifting blocks (52); the two guide rails (54) are arranged on the column (2) along the moving direction of the first lifting plate (3); the plurality of sliders (55) are respectively fixedly arranged on the first lifting plate (3) and the second lifting plate (4); and the sliders (55) are slidably arranged on the guide rails (54).

5. A mobile auxiliary device for shielding performance detection according to claim 4, characterized in that: The column (2) is provided with accordion covers (18) on both upper and lower sides of the first lifting plate (3) and the second lifting plate (4), and the accordion covers (18) are arranged on the first lead screw (53) and the guide rail (54).

6. The mobile auxiliary device for shielding performance detection according to claim 1, characterized in that: A translation plate (19) is slidably arranged on the base (1) along the horizontal and vertical moving directions of the first connecting rod (6); the column (2) is arranged on the translation plate (19); a translation assembly (20) for driving the translation plate (19) to move is arranged in the base (1); and the first controller (10) is electrically connected to the translation assembly (20).

7. A mobile auxiliary device for shielding performance detection according to claim 6, characterized in that: The translation assembly (20) comprises a fourth driving member (201), a second lead screw (202), a guide rod (203) and a translation block (204); the translation block (204) is fixedly arranged at the bottom of the translation plate (19); the fourth driving member (201) is arranged in the base (1); the second lead screw (202) is arranged at the driving end of the fourth driving member (201) and is threadedly passed through the translation block (204); the guide rod (203) is arranged in the base (1); the guide rod (203) is parallel to the second lead screw (202) and passes through the translation block (204).

8. The mobile auxiliary device for shielding performance detection according to claim 6, characterized in that: Steel plate protective covers (21) are provided on both sides of the base (1) in the moving direction of the translation plate (19), and the steel plate protective covers (21) are provided on the second lead screw (202) and the guide rod (203).