Air tightness detection device for fuse box base

Abstract

The utility model relates to the technical field of fuse box equipment, in particular to a fuse box base airtightness detection device which comprises a rack, a workbench is arranged on the rack, a sealing device is installed on the workbench, the sealing device comprises a loading block, the loading block is installed on the workbench, and the loading block is installed on the workbench. A loading block is arranged on the workbench, a supporting block for fixedly supporting a fuse box base is arranged on the loading block, a locking mechanism for fixing the loading block is arranged on the rack, a detection assembly is arranged on the rack and is connected with the sealing device, a lifting mechanism is arranged on the workbench, and the sealing device is connected with the lifting mechanism. And a pressing plate for fixing the fuse box base on the sealing device is mounted on the lifting mechanism. The detection device for the fuse box base has the effect of improving the convenience of the detection device for the fuse box base in the operation process.

Description

Technical Field

[0001] The present application relates to the technical field of fuse box equipment, and in particular to an air tightness detection device for a fuse box base. Background Art

[0002] A fuse box refers to a box for installing fuses. It is convenient for installing fuses and has performance characteristics such as waterproof, fireproof, and high temperature resistance. Considering the working environment of the fuse box, high requirements are placed on the fireproof and waterproof performance of the fuse box when it is manufactured. Usually, the fuse box needs to meet the IP67 sealing standard during production.

[0003] After the fuse box is manufactured, the air tightness of the fuse box base needs to be tested. In most existing testing technologies, the protective area of ​​the fuse box base is sealed, and the air is extracted from the protective area of ​​the fuse box base by a vacuum pressure method. The air pressure change in the protective area of ​​the fuse box base is used to determine whether the air tightness of the fuse box base is qualified.

[0004] Because different fuse box bases need to be formulated according to different scenarios, and the types of fuse box bases are different, when performing air tightness testing on the fuse box base, it is necessary to replace the device that seals the fuse box base, and most testing equipment is set as dedicated testing equipment when it is manufactured, which is not convenient for testing fuse box bases of different types or sizes. Utility Model Content

[0005] In order to improve the convenience of the detection device of the fuse box base during operation, the present application provides an airtightness detection device of the fuse box base.

[0006] The present application provides an air tightness detection device for a fuse box, comprising a frame, a workbench is arranged on the frame, a sealing device is installed on the workbench, the sealing device comprises a loading block, the loading block is installed on the workbench, a supporting block for fixedly supporting a fuse box base is installed on the loading block, a locking mechanism for fixing the loading block is installed on the frame, a detection component is installed on the frame, the detection component is connected to the sealing device, a lifting mechanism is arranged on the workbench, and a pressing plate for fixing the fuse box base on the sealing device is installed on the lifting mechanism.

[0007] By adopting the above technical solution, the fuse box base is placed on the loading block of the sealing device for sealing, the support block supports the fuse box base and protects the fuse box base, the lifting mechanism controls the movement of the pressure plate to press the fuse box onto the sealing device, and the detection device performs a rapid and effective detection of the air tightness of the fuse box. The operation is simple, which is conducive to improving the convenience of the air tightness detection device of the fuse box during operation.

[0008] In a specific feasible implementation scheme, the sealing device includes a loading block, which is installed on the workbench and has an installation groove. A support block is installed in the installation groove on the loading block, and a sealing gasket is installed on the loading block, and the sealing gasket is arranged tightly against the installation groove.

[0009] By adopting the above technical solution, the isolation plate of the fuse box base is inserted into the installation groove, the bottom plate of the fuse box base is supported by the support block, and the sealing effect of the fuse box base is enhanced by the sealing pad.

[0010] In a specific possible implementation manner, a first positioning hole is formed on the support block, and a second positioning hole is formed on the loading block.

[0011] By adopting the above technical solution, the first positioning hole and the second positioning hole can quickly position the fuse box base, thereby realizing rapid installation of the fuse box base.

[0012] In a specific implementation scheme, the lifting mechanism includes a support column, which is installed on the workbench, a first loading plate is installed on the support column, a first cylinder is installed on the first loading plate, an output shaft of the first cylinder is connected to a second loading plate, and the pressure plate is installed on the second loading plate.

[0013] By adopting the above technical solution, the first cylinder controls the pressing plate to press the fuse box base onto the sealing device, so that the fuse box base can be effectively attached to the sealing device during the detection process.

[0014] In a specific possible implementation manner, a guide rod is installed on the second loading plate, and the guide rod passes through the first loading plate and is slidably connected to the first loading plate.

[0015] By adopting the above technical solution, the guide rod slides on the first loading plate, thereby enhancing the stability of the second loading plate, so that the pressing plate can move up and down smoothly.

[0016] In a specific implementation manner, a limiting column for controlling the displacement of the pressing plate is installed on the first loading plate.

[0017] By adopting the above technical solution, the downward displacement of the pressing plate is controlled by the limiting column, so that the pressing plate can move quickly and stay at a specified position to press the fuse box base.

[0018] In a specific implementation scheme, the locking mechanism includes a support frame, which is mounted on the workbench, and a second cylinder is mounted on the support frame. The output shaft of the second cylinder is connected to a moving rod, and a first locking assembly and a second locking assembly are respectively mounted on the moving rod.

[0019] By adopting the above technical solution, the second cylinder is actuated to control the movement of the movable rod, so that the first locking assembly and the second locking assembly can realize rapid fixing, locking and unlocking of the sealing device, making the sealing device a detachable component. The corresponding sealing device can be disassembled and quickly installed according to different fuse box bases, which is beneficial to improving the convenience of the airtightness detection device of the fuse box base during operation.

[0020] In a specific feasible implementation scheme, the first locking assembly includes a first slider, the first slider is slidably mounted on the moving rod, a first connecting rod is rotatably mounted on the first slider, and the first connecting rod is rotatably connected to the support frame at one end away from the first slider; a first sliding sleeve is installed on the support frame, a first locking rod is slidably mounted on the first sliding sleeve, a second connecting rod is rotatably mounted on the first locking rod, and the second connecting rod is rotatably connected to the first slider at one end away from the first locking rod, and a first limit block for limiting the sealing device is provided on the first locking rod.

[0021] By adopting the above technical solution, the moving rod pushes the first slider to move, the first slider drives the second connecting rod to move, and the second connecting rod drives the first locking rod to slide on the first sliding sleeve, so that the first limit block is inserted into the sealing device for fixed locking or the first limit block leaves the sealing device to unlock the sealing device, which is convenient for rapid disassembly, replacement and installation and locking of the sealing device.

[0022] In a specific feasible implementation scheme, the second locking assembly includes a second slider, the second slider is slidably mounted on the moving rod, a third connecting rod is rotatably mounted on the second slider, and the third connecting rod is rotatably connected to the support frame at one end away from the second slider; a second sliding sleeve is mounted on the support frame, a second locking rod is slidably mounted on the second sliding sleeve, a fourth connecting rod is rotatably mounted on the second locking rod, and the fourth connecting rod is connected to the second slider at one end away from the second locking rod, and a second limit block is provided on the second locking rod for limiting the sealing device.

[0023] By adopting the above technical solution, the moving rod pushes the second slider to move, the second slider drives the fourth connecting rod to move, and the fourth connecting rod drives the second locking rod to slide on the second sliding sleeve, so that the second limit block is inserted into the sealing device for fixed locking or the second limit block leaves the sealing device to unlock the sealing device, which is convenient for rapid disassembly, replacement and installation and locking of the sealing device.

[0024] In a specific possible implementation manner, the detection device comprises a connecting tube, the connecting tube is connected to the loading block, and one end of the connecting tube away from the loading block is connected to an air compressor.

[0025] By adopting the above technical solution, the connecting pipe connects the loading block with the air compressor, and the air compressor quickly evacuates the sealing device to achieve rapid detection of the fuse box base. The detection result is true and effective, which is conducive to improving the efficiency of the airtightness detection device of the fuse box base during use.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Place the fuse box base on the loading block of the sealing device for sealing. The support block supports and protects the fuse box base. The lifting mechanism controls the movement of the pressure plate to press the fuse box onto the sealing device. The detection device performs a quick and effective detection of the air tightness of the fuse box. The operation is simple, which is conducive to improving the convenience of the air tightness detection device of the fuse box during operation.

[0028] 2. Place the fuse box base on the sealing device for sealing, and control the movement of the pressure plate through the lifting mechanism to press the fuse box onto the sealing device. The detection device makes a quick and effective detection of the air tightness of the fuse box. The operation is simple, which is conducive to improving the convenience of the air tightness detection device of the fuse box during operation.

[0029] 3. Through the setting of the locking mechanism, the second cylinder controls the movement of the moving rod, so that the first locking assembly and the second locking assembly can realize the rapid fixing, locking and unlocking of the sealing device, making the sealing device a detachable component. The corresponding sealing device can be disassembled and quickly installed according to different fuse box bases, which is beneficial to improving the convenience of the airtightness detection device of the fuse box base during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a fuse box base according to an embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view of the fuse box base according to an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of an air tightness detection device for a fuse box base according to an embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of a sealing device according to an embodiment of the present application.

[0034] Figure 5 It is a schematic diagram of the lifting mechanism of an embodiment of the present application.

[0035] Figure 6 It is a schematic diagram of the locking mechanism of an embodiment of the present application.

[0036] Figure 7 It is a bottom view of the locking mechanism of an embodiment of the present application.

[0037] Explanation of the reference numerals: 11, bottom plate; 12, screw; 13, isolation plate; 14, support plate; 15, sealing plate; 2, frame; 21, workbench; 3, lifting mechanism; 31, support column; 32, first loading plate; 33, first cylinder; 34, second loading plate; 35, guide rod; 36, limit column; 4, sealing device; 41, loading block; 42, mounting groove; 43, support block; 44, first positioning hole; 45, sealing pad; 46, second positioning hole; 47, bump; 5, detection component; 51, connecting pipe; 52, air compressor; 6, pressure plate; 7, locking mechanism; 71, support frame; 72, second cylinder; 73, moving rod; 7 4. The first locking assembly; 741. The first slider; 742. The first fixed rod; 743. The first connecting rod; 744. The second fixed rod; 745. The second connecting rod; 746. The first sleeve; 747. The first locking rod; 748. The first limiting block; 7491. The third fixed rod; 7492. The fourth fixed rod; 75. The second locking assembly; 751. The second slider; 752. The fifth fixed rod; 753. The third connecting rod; 754. The sixth fixed rod; 755. The fourth connecting rod; 756. The second sleeve; 757. The second locking rod; 758. The second limiting block; 7591. The seventh fixed rod; 7592. The eighth fixed rod; 76. The locking hole. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] Example:

[0040] The present application embodiment discloses a fuse box base, referring to Figure 1 and Figure 2 , including a bottom plate 11, a support plate 14 is fixedly installed on the side wall of the bottom plate 11, an isolation plate 13 is fixedly installed on the bottom plate 11, and screws 12 are fixedly installed on the bottom plate 11. In this embodiment, a total of six screws 12 are provided, four screws 12 are in the isolation plate 13, and sealing plates 15 are installed on the bottom plate 11 at the connection positions with the screws 12.

[0041] When the fuse box base is in use, the support plate 14 reinforces the bottom plate 11 to prevent the base from being deformed by force during use. The cover of the fuse box base is connected to the fuse box base through screws 12. The six screws 12 improve the installation stability of the cover and the fuse box base. The isolation plate 13 is used for isolation and sealing. The sealing plate 15 seals the screws 12 to prevent the entry of water stains, so that the fuse box meets the specified sealing standards.

[0042] The present application also discloses an air tightness detection device for a fuse box base, referring to Figure 3 , including a frame 2, a workbench 21 is installed on the frame 2, a sealing device 4 is installed on the workbench 21, a locking mechanism 7 for fixing the sealing device 4 is installed on the workbench 21, a detection component 5 is connected to the sealing device 4, a lifting mechanism 3 is installed on the workbench 21, and a pressing plate 6 for fixing the fuse box base is installed on the lifting mechanism 3.

[0043] When it is necessary to perform an airtightness test on the fuse box base, the sealing device 4 corresponding to the fuse box base is replaced by operating the locking mechanism 7, and the fuse box base is placed on the sealing device 4. The lifting mechanism 3 is actuated to drive the pressure plate 6 to move downward and press the fuse box base onto the sealing device 4. The fuse box base is tested for airtightness by the detection device 5, which is beneficial to improving the efficiency of the airtightness detection device of the fuse box base during the detection process.

[0044] Reference Figure 4 The sealing device 4 includes a loading block 41, a protrusion 47 is fixedly installed on the workbench 21, the loading block 41 is quickly positioned and installed on the workbench 21 through the protrusion 47, a mounting groove 42 is opened on the loading block 41, a supporting block 43 is fixedly installed in the mounting groove 42 opened in the loading block 41, a first positioning hole 44 is opened on the supporting block 43, a sealing gasket 45 is installed on the top surface of the loading block 41, the sealing gasket 45 is arranged closely against the mounting groove 42, and a second positioning hole 46 is opened on the loading block 41.

[0045] When the fuse box base is placed on the sealing device 4, the isolation plate 13 is inserted into the installation groove 42, the screws 12 in the isolation plate 13 can be inserted into the first positioning holes 44 of the support block 43, and the fuse box base is supported by the support block 43, and the screws 12 outside the isolation plate 13 are inserted into the second positioning holes 46 on the loading block 41, so as to realize the rapid positioning and installation of the fuse box base, and the sealing gasket 45 cooperates with the isolation plate 13 to achieve the internal sealing effect of the isolation plate 13.

[0046] Reference Figure 5The lifting mechanism 3 includes a support column 31, which is fixedly installed on the workbench 21. The support column 31 is vertically arranged and a first loading plate 32 is fixedly installed at one end of the support column 31 away from the workbench 21. The first loading plate 32 is horizontally arranged. A first cylinder 33 is fixedly installed on the top surface of the first loading plate 32. The output shaft of the first cylinder 33 passes through the first loading plate 32 and is fixedly connected to the second loading plate 34. The bottom surface of the second loading plate 34 is fixedly connected to the pressing plate 6. A guide rod 35 is fixedly installed on the second loading plate 34. The guide rod 35 passes through the first loading plate 32 and is slidably connected to the first loading plate 32. A limit column 36 for controlling the downward displacement of the pressing plate 6 is fixedly installed on the second loading plate 34.

[0047] When the fuse box base is fixed and pressed, the first cylinder 33 is actuated to push the second loading plate 34 downward, and the second loading plate 34 drives the pressing plate 6 to move downward and press the fuse box base. The displacement of the pressing plate 6 downward is determined by the limiting column 36, so as to achieve precise pressure on the fuse box base and fit closely with the sealing device 4, which is beneficial to improve the efficiency of the airtightness detection device of the fuse box during use.

[0048] The detection device 5 includes a connecting pipe 51, which is connected to the loading block 41 and communicates with the mounting groove 42. The end of the connecting pipe 51 away from the loading block 41 is connected to the air compressor 52. In this embodiment, the air compressor 52 is prior art and will not be described in detail in the embodiments of this application.

[0049] When the air tightness test is performed on the fuse box base, the air compressor 52 evacuates the installation groove 42 through the connecting pipe 51 to form a negative pressure in the installation groove 42, and the leakage value detected by the detection system on the air compressor 52 is observed. If the leakage value is less than 0.2cc / min, the fuse box passes the air tightness test. The detection method is fast and effective.

[0050] Reference Figure 6 and Figure 7 The locking mechanism 7 includes a support frame 71, which is fixedly mounted on the workbench 21, and a second cylinder 72 is fixedly mounted on the support frame 71. The output shaft of the second cylinder 72 passes through the support frame 71 and is slidably connected to the support frame 71. The output shaft of the second cylinder 72 is fixedly connected to a moving rod 73, and a first locking assembly 74 and a second locking assembly 75 are respectively mounted on the moving rod 73. In this embodiment, three locking holes 76 are respectively opened on the side walls of the sealing device 4 close to both sides of the first locking assembly 74 and the second locking assembly 75. The first locking assembly 74 and the second locking assembly 75 work together to achieve fixed installation of the sealing device 4.

[0051] The first locking assembly 74 includes a first slider 741, which is slidably mounted on the moving rod 73, a first fixed rod 742 is fixedly mounted on the upper surface of the first slider 741, the first fixed rod 742 is rotatably connected to the first connecting rod 743, a second fixed rod 744 is fixedly mounted on the support frame 71, and the first connecting rod 743 is rotatably mounted on the second fixed rod 744 away from the first fixed rod 742; a third fixed rod 7491 is fixedly mounted on the bottom surface of the first slider 741, the second connecting rod 745 is rotatably mounted on the third fixed rod 7491, a first sliding sleeve 746 is fixedly mounted on the support frame 71, a first locking rod 747 is slidably mounted on the first sliding sleeve 746, a fourth fixed rod 7492 is fixedly mounted on the first locking rod 747, and the second connecting rod 745 is rotatably connected to the fourth fixed rod 7492 at the same time. A first limiting block 748 is fixedly mounted on the side wall of the first locking rod 747 close to the sealing device 4 . In this embodiment, three first limiting blocks 748 are provided in total and are all arranged corresponding to the locking holes 76 .

[0052] The second locking assembly 75 includes a second slider 751, which is slidably mounted on the moving rod 73, a fifth fixed rod 752 is fixedly mounted on the upper surface of the second slider 751, the fifth fixed rod 752 is rotatably connected to the third connecting rod 753, a sixth fixed rod 754 is fixedly mounted on the support frame 71, and the third connecting rod 753 is rotatably mounted on the sixth fixed rod 754 away from the fifth fixed rod 752; a seventh fixed rod 7591 is fixedly mounted on the bottom surface of the second slider 751, the fourth connecting rod 755 is rotatably mounted on the seventh fixed rod 7591, a second sliding sleeve 756 is fixedly mounted on the support frame 71, a second locking rod 757 is slidably mounted on the second sliding sleeve 756, an eighth fixed rod 7592 is fixedly mounted on the second locking rod 757, and the fourth connecting rod 755 is rotatably connected to the eighth fixed rod 7592 at the same time. A second limiting block 758 is fixedly mounted on the side wall of the second locking rod 757 close to the sealing device 4 . In this embodiment, three second limiting blocks 758 are provided in total and are all arranged corresponding to the locking holes 76 .

[0053] After the sealing device 4 is placed, the second cylinder 72 is actuated to push the moving rod 73 to move closer to the sealing device 4, the first connecting rod 743 causes the first slider 741 to slide on the moving rod 73, the first slider 741 drives the second connecting rod 745 to move, the second connecting rod 745 drives the first locking rod 747 to slide on the first sliding sleeve 746 towards the sealing device 4, the first limiting block 748 is inserted into the locking hole 76 to fix the sealing device 4, so that the sealing device 4 is fixedly installed on the protrusion 47; at the same time, the third connecting rod 753 causes the second slider 751 to slide on the moving rod 73, the second slider 751 drives the fourth connecting rod 755 to move, the fourth connecting rod 755 drives the second locking rod 757 to slide on the second sliding sleeve 756 towards the sealing device 4, and the second limiting block 758 is inserted into the locking hole 76 to fix the sealing device 4. The moving rod 73 causes the first locking assembly 74 and the second locking assembly 75 to operate simultaneously to quickly fix and lock the sealing device 4. If it is necessary to replace the sealing device 4 of a different size, the second cylinder 72 operates to pull the moving rod 73 to cause the first locking assembly 74 and the second locking assembly 75 to quickly unlock the sealing device 4, so that the sealing device 4 can be quickly removed from the protrusion 47, which is convenient for replacing the sealing device 4, and is beneficial to improving the convenience of the airtightness detection device of the fuse box during operation.

[0054] The implementation principle of the embodiment of the present application is as follows: when it is necessary to perform an airtightness test on the fuse box base, the fuse box base is placed on the sealing device 4, the first cylinder 33 of the lifting mechanism 3 is actuated to push the second loading plate 34 to move downward, the second loading plate 34 drives the pressure plate 6 to move downward and press the fuse box base, the displacement of the pressure plate 6 downward is determined by the limit column 36, and the airtightness of the fuse box base is quickly tested by the air compressor 52. When it is necessary to replace the sealing device 4, the second cylinder 72 is actuated to pull the moving rod 73 so that the first locking assembly 74 and the second locking assembly 75 quickly unlock the sealing device 4. After the replacement is completed, the moving rod 73 is controlled by the second cylinder 72 so that the first locking assembly 74 and the second locking assembly 75 are simultaneously actuated to quickly fix and lock the sealing device 4, which is conducive to improving the convenience of an airtightness detection device for a fuse box during operation.

[0055] 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. An air tightness detection device for a fuse box base, characterized in that: The invention comprises a frame (2), a workbench (21) being arranged on the frame (2), a sealing device (4) being installed on the workbench (21), the sealing device (4) comprising a loading block (41), the loading block (41) being installed on the workbench (21), a supporting block (43) being installed on the loading block (41) for fixedly supporting a fuse box base, a locking mechanism (7) being installed on the frame (2) for fixing the loading block (41), a detection component (5) being installed on the frame (2), the detection component (5) being connected to the sealing device (4), a lifting mechanism (3) being arranged on the workbench (21), a pressing plate (6) being installed on the lifting mechanism (3) for fixing the fuse box base on the sealing device (4).

2. The air tightness detection device for a fuse box base according to claim 1, characterized in that: The loading block (41) is provided with a mounting groove (42), the supporting block (43) is installed in the mounting groove (42) provided on the loading block (41), and a sealing gasket (45) is installed on the loading block (41), the sealing gasket (45) is arranged closely against the mounting groove (42).

3. The air tightness detection device for a fuse box base according to claim 2, characterized in that: The support block (43) is provided with a first positioning hole (44), and the loading block (41) is provided with a second positioning hole (46).

4. The air tightness detection device for a fuse box base according to claim 1, characterized in that: The lifting mechanism (3) comprises a support column (31), the support column (31) being mounted on the workbench (21), a first loading plate (32) being mounted on the support column (31), a first cylinder (33) being mounted on the first loading plate (32), an output shaft of the first cylinder (33) being connected to a second loading plate (34), and the pressing plate (6) being mounted on the second loading plate (34).

5. The air tightness detection device for a fuse box base according to claim 4, characterized in that: A guide rod (35) is mounted on the second loading plate (34); the guide rod (35) passes through the first loading plate (32) and is slidably connected to the first loading plate (32).

6. The air tightness detection device for a fuse box base according to claim 4, characterized in that: A limiting column (36) for controlling the displacement of the pressing plate (6) is mounted on the first loading plate (32).

7. The air tightness detection device for a fuse box base according to claim 1, characterized in that: The workbench (21) is provided with a locking mechanism (7) for limiting the position of the sealing device (4), the locking mechanism (7) comprising a support frame (71), the support frame (71) being mounted on the workbench (21), a second cylinder (72) being mounted on the support frame (71), an output shaft of the second cylinder (72) being connected to a moving rod (73), a first locking assembly (74) and a second locking assembly (75) being mounted on the moving rod (73), respectively.

8. The air tightness detection device for a fuse box base according to claim 7, characterized in that: The first locking assembly (74) comprises a first slider (741), the first slider (741) is slidably mounted on the moving rod (73), a first connecting rod (743) is rotatably mounted on the first slider (741), and the end of the first connecting rod (743) away from the first slider (741) is rotatably connected to the support frame (71); a first sliding sleeve (746) is mounted on the support frame (71), a first locking rod (747) is slidably mounted on the first sliding sleeve (746), a second connecting rod (745) is rotatably mounted on the first locking rod (747), and the end of the second connecting rod (745) away from the first locking rod (747) is rotatably connected to the first slider (741), and a first limiting block (748) for limiting the sealing device (4) is provided on the first locking rod (747).

9. The air tightness detection device for a fuse box base according to claim 7, characterized in that: The second locking assembly (75) comprises a second slider (751), the second slider (751) being slidably mounted on the moving rod (73), a third connecting rod (753) being rotatably mounted on the second slider (751), and an end of the third connecting rod (753) away from the second slider (751) being rotatably connected to the support frame (71); a second sliding sleeve (756) being mounted on the support frame (71), a second locking rod (757) being slidably mounted on the second sliding sleeve (756), a fourth connecting rod (755) being rotatably mounted on the second locking rod (757), an end of the fourth connecting rod (755) away from the second locking rod (757) being rotatably connected to the second slider (751), and a second limiting block (758) for limiting the sealing device (4) is provided on the second locking rod (757).

10. The air tightness detection device for a fuse box base according to claim 1, characterized in that: The detection assembly (5) comprises a connecting pipe (51), the connecting pipe (51) being connected to the loading block (41), and an end of the connecting pipe (51) away from the loading block (41) being connected to an air compressor (52).

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