A special mechanism for closing and opening of a circuit breaker of an explosion-proof distribution box and an explosion-proof distribution box

Abstract

The application relates to the technical field of explosion-proof distribution boxes, and discloses a special mechanism for the opening and closing of a circuit breaker of an explosion-proof distribution box, which comprises a positioning frame, a rotating disc and a moving block, the moving block is slidably arranged on the positioning frame, the rotating disc is provided with a rotating block, a moving hole for inserting the rotating block is formed in the moving block, a fixing block is arranged on the moving block, and the fixing block is arranged on a swing switch of the circuit breaker; when the rotating disc rotates, the moving block slides on the positioning frame, the rotating disc is rotated to trigger the swing switch of the circuit breaker, so that no excessive gap is generated between the rotating disc and a box door, dust from the outside cannot directly penetrate into the inside of the distribution box, and the reliability and safety of the distribution box are improved.

Description

Technical Field

[0001] This application relates to the technical field of explosion-proof distribution boxes, and in particular to a circuit breaker closing and opening mechanism for an explosion-proof distribution box and an explosion-proof distribution box. Background Technology

[0002] Explosion-proof distribution boxes are specialized electrical equipment used in hazardous environments containing explosive gases, vapors, dust, etc. They are widely used in flammable and explosive places such as coal mines, petroleum, chemical industry, and military industry. As the core component inside the distribution box, the circuit breaker is responsible for the on-off control of the circuit and the overload and short-circuit protection functions. The reliability and safety of its operation are directly related to the stable operation of the entire power distribution system.

[0003] The explosion-proof distribution box includes a box body and a box door. The box body has a placement slot, and a circuit breaker is installed in the placement slot. The box door is rotatably connected to the box body. In order to facilitate the operation of the circuit breaker when the box door is closed, a through hole is provided on the box door. A swing rod is swaying at the through hole and is set on the swing switch of the circuit breaker. When the user rotates the swing rod, the swing rod realizes the opening and closing of the circuit breaker through the circuit breaker.

[0004] To ensure the swing arm can swing flexibly to drive the circuit breaker, a certain clearance must be reserved between the swing arm and the through hole. In places with high dust concentrations, such as coal mines and flour mills, fine dust particles can easily seep into the distribution box through this clearance. The accumulation of dust not only contaminates internal components, affecting their heat dissipation and insulation performance, but more seriously, when the dust concentration reaches a certain level, if it encounters a weak electric arc or the heat of the electrical equipment itself during the circuit breaker's opening and closing process, it can easily cause an explosion accident. This poses a serious threat to the explosion-proof performance of the explosion-proof distribution box and reduces the long-term reliability and safety of the equipment in harsh industrial environments. Summary of the Invention

[0005] To address the issue of dust easily penetrating into the interior of the distribution box through gaps, this application provides a dedicated circuit breaker closing and opening mechanism for an explosion-proof distribution box, as well as the explosion-proof distribution box itself.

[0006] This application provides a circuit breaker closing and opening mechanism for an explosion-proof distribution box and an explosion-proof distribution box, which adopts the following technical solution: A circuit breaker closing and opening mechanism for an explosion-proof distribution box includes a positioning frame, a rotating disk, and a moving block. The moving block is slidably mounted on the positioning frame. The rotating disk has a rotating block. The moving block has a moving hole for inserting the rotating block. The moving block has a fixing block. The fixing block is mounted on the swing switch of the circuit breaker. When the rotating disk rotates, the moving block slides on the positioning frame.

[0007] By adopting the above technical solution, the user drives the rotating disk to rotate, positioning the rotating block in the moving hole. The rotating block moves along the wall of the moving hole, causing the moving block to move. Since the moving block is slidably mounted on the positioning frame, and the fixed block is mounted on the circuit breaker's swing switch, the moving block can drive the circuit breaker's swing switch to rotate, thus realizing the opening and closing of the circuit breaker circuit. Because the rotating disk triggers the circuit breaker's swing switch by rotating, there will not be excessive gaps between the rotating disk and the box door, preventing external dust from directly penetrating into the distribution box and improving the reliability and safety of the distribution box.

[0008] Optionally, the positioning frame includes a first positioning piece, a second positioning piece, and a third positioning piece. The second positioning piece is disposed between the first positioning piece and the third positioning piece. The first positioning piece and the third positioning piece are used to clamp the circuit breaker. Fasteners are provided on the first positioning piece and the third positioning piece, and the fasteners are used to drive the first positioning piece and the third positioning piece to press against the circuit breaker.

[0009] By adopting the above technical solution, the first and third positioning plates are driven by fasteners to abut against the circuit breaker, so that the first and third positioning plates can clamp the circuit breaker, and the positioning frame can be stably set on the circuit breaker. This reduces the possibility of the fixed block and the swing switch of the circuit breaker separating during the transportation of the distribution box, and further improves the reliability between the fixed block and the swing switch of the circuit breaker.

[0010] Optionally, the fastener includes a fastening bolt and a fastening nut, and the movable block has a through hole for the fastening bolt to pass through, and the movable block slides along the length direction of the fastening bolt.

[0011] By adopting the above technical solution, the first positioning plate and the third positioning plate can be brought close to each other by fastening bolts and fastening nuts on the positioning frame, so that the first positioning plate and the third positioning plate can clamp the circuit breaker; at the same time, the moving block slides along the length direction of the fastening bolt, so that no additional structure is needed in the positioning frame to restrict the sliding of the moving block, so that the fastening bolt has the functions of fastening the positioning frame and restricting the sliding of the moving block.

[0012] Optionally, the length direction of the movable hole and the length direction of the fastening bolt are perpendicular to each other.

[0013] By adopting the above technical solution, the effective transmission of the rotating torque of the rotating disk is ensured by making the length direction of the moving hole and the length direction of the fastening bolt perpendicular to each other. This avoids the moving block from shifting or getting stuck during the sliding process, improves the reliability and smoothness of the mechanism's operation, and thus ensures the accuracy of the circuit breaker's opening and closing operations, further guaranteeing the safe use of the explosion-proof distribution box in hazardous environments.

[0014] An explosion-proof distribution box includes a box body and a box door. The box body has a placement slot, and the box door is rotatably connected to the box body. The box door includes a special mechanism, and the box door has a through hole for installing the special mechanism. An operating structure is rotatably connected to the box door, and the operating structure is used to drive a rotating disk to rotate.

[0015] By adopting the above technical solution, a special mechanism is set at the perforation, and the operating structure is set on the box door, so that the operating structure drives the rotating disk to rotate, thereby realizing the rotation of the circuit breaker swing switch.

[0016] Optionally, the operating structure includes an operating frame, an operating panel, and an operating block. The operating frame is mounted on the door, the operating panel is rotatably connected to the operating frame, and the operating block is provided with an operating bar. The operating panel has a first operating hole and a second operating hole that communicate with each other. The first operating hole allows the operating bar to rotate, and the second operating hole allows the operating bar to be inserted. When the operating bar is inserted into the second operating hole, the operating block drives the operating panel to rotate. When the operating bar is inserted into the first operating hole, the operating block rotates within the operating panel.

[0017] By adopting the above technical solution, the user slides the operating block, allowing the operating bar to move from the first operating hole to the second operating hole. The wall of the second operating hole restricts the movement of the operating bar, meaning the operating block and the operating panel can be relatively fixed. This allows the user to rotate the operating panel by using the operating block, enabling the operating panel to drive the dedicated mechanism to open and close the circuit breaker. When the user does not need to open or close the circuit breaker, the user moves the operating block, allowing the operating bar to move from the second operating hole to the first operating hole. Since the first operating hole allows the operating bar to rotate, the operating block can rotate within the operating panel, ensuring that the operating panel will not be accidentally activated even if the user unintentionally rotates the operating block or if external force pushes the operating block.

[0018] Optionally, the operating block is provided with a weight, and the first operating hole is located on the side of the second operating hole closer to the ground. The weight is used to move the operating bar from the second operating hole to the first operating hole.

[0019] By adopting the above technical solution, with the first operating hole located on the side of the second operating hole closer to the ground, and a weight set on the operating block, the weight can drive the operating block to slide, so that the operating bar can move from the second operating hole to the first operating hole. This allows the user to perform anti-accidental operation of the operating block and operating panel without having to move the operating block, reducing the user's operation.

[0020] Optionally, the operating block is provided with a limiting rod, and the operating frame is provided with a first limiting hole and a second limiting hole that are interconnected. The extension directions of the first limiting hole and the second limiting hole are different. The limiting rod is used to pass through the first limiting hole and extend into the second limiting hole. When the limiting rod is located in the first limiting hole, the operating block can be disengaged from the operating frame.

[0021] By adopting the above technical solution, a limiting rod extends from the first limiting hole into the second limiting hole. Because the extension directions of the first and second limiting holes are different, the wall of the second limiting hole can restrict the movement of the limiting rod, making it difficult for the limiting rod to detach from the operating frame. This effectively prevents the operating block from detaching from the operating frame due to vibration or accidental contact during normal operation, ensuring the stability and reliability of the circuit breaker's opening and closing operations. When maintenance or replacement is required, the operator slides the operating block, moving the limiting rod from the second limiting hole to the first limiting hole, thus detaching the limiting rod from the operating frame. This facilitates on-site inspection and replacement, improving the maintainability of the equipment.

[0022] In summary, this application includes at least one of the following beneficial technical effects: The user rotates the rotating disc, positioning the rotating block within the movable hole. The rotating block then moves along the hole wall, causing the movable block to move. Since the movable block is slidably mounted on the positioning frame, and the fixed block is mounted on the circuit breaker's swing switch, the movable block can drive the circuit breaker's swing switch to rotate, thus opening and closing the circuit breaker. Because the rotating disc triggers the circuit breaker's swing switch, there is minimal gap between the rotating disc and the box door, preventing external dust from directly penetrating the distribution box and improving its reliability and safety.

[0023] The limiting rod extends from the first limiting hole into the second limiting hole. Because the extension directions of the first and second limiting holes are different, the wall of the second limiting hole can restrict the movement of the limiting rod, thus allowing the limiting rod to be stably positioned on the operating frame. This prevents the operating block from detaching from the operating frame, effectively preventing the operating block from accidentally detaching due to vibration or accidental contact during normal operation, ensuring the stability and reliability of the circuit breaker's opening and closing operations. When maintenance or replacement is required, the operator slides the operating block, allowing the limiting rod to move from the second limiting hole to the first limiting hole, thus detaching the limiting rod from the operating frame. This facilitates on-site inspection and replacement, improving the maintainability of the equipment. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is an exploded view of the placement slot highlighted in Example 1; Figure 3 This is a schematic diagram highlighting the special mechanism in Example 1; Figure 4 This is a schematic diagram of the structure highlighting the movable hole in Embodiment 1; Figure 5 This is a structural schematic diagram of Example 2; Figure 6 This is an exploded view of the operation block highlighted in Example 2; Figure 7 This is a schematic diagram of the structure highlighting the connecting strip in Embodiment 2.

[0025] Reference numerals: 1. Box body; 11. Placement slot; 2. Box door; 21. Perforation; 3. Special mechanism; 31. Positioning frame; 311. First positioning piece; 312. Second positioning piece; 313. Third positioning piece; 32. Rotating disk; 321. Rotating block; 33. Moving block; 331. Through hole; 332. Fixed block; 333. Moving hole; 34. Fastener; 341. Fastening bolt; 342. Fastening nut; 4. Operating structure; 41. Operating frame; 411. First limiting hole; 412. Second limiting hole; 413. First inclined surface; 414. Second inclined surface; 42. Operating block; 421. Operating bar; 422. Weight; 423. Limiting rod; 43. Operating disk; 431. First operating hole; 432. Second operating hole; 433. Guide bar; 434. Connecting bar. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail. Example

[0027] This embodiment discloses an explosion-proof distribution box. (Refer to...) Figure 1 and Figure 2 An explosion-proof distribution box includes a box body 1, a box door 2 and a special mechanism 3, wherein the box door 2 is rotatably connected to the box body 1.

[0028] Reference Figure 2 The enclosure 1 has a placement slot 11 for placing electrical components such as circuit breakers. The outer surface of the enclosure door 2 has multiple through holes 21, and a special mechanism 3 is set at the through holes 21. The special mechanism 3 is used to realize the opening and closing operation of the circuit breaker.

[0029] Reference Figure 3The special mechanism 3 includes a positioning frame 31, a rotating disk 32, and a moving block 33. The moving block 33 is slidably disposed on the positioning frame 31, and the rotating disk 32 is rotatably connected to the positioning frame 31. The positioning frame 31 includes a first positioning piece 311, a second positioning piece 312, and a third positioning piece 313, with the second positioning piece 312 integrally formed between the first positioning piece 311 and the third positioning piece 313. The first positioning piece 311 and the third positioning piece 313 extend in the same direction, and both are perpendicularly disposed on the second positioning piece 312. The first positioning piece 311 bends toward the third positioning piece 313, and the third positioning piece 313 bends toward the first positioning piece 311, allowing the first positioning piece 311 and the third positioning piece 313 to clamp the two sides of the circuit breaker.

[0030] Reference Figure 3 The positioning bracket 31 is equipped with fasteners 34, which include two fastening bolts 341 and two fastening nuts 342. Both the first positioning plate 311 and the third positioning plate 313 have fastening holes for the fastening bolts 341 to pass through. The fastening bolts 341 extend along the length of the second positioning plate 312. The fastening bolts 341 pass through the fastening holes and are threaded onto the fastening nuts 342, enabling the first positioning plate 311 and the third positioning plate 313 to abut against both sides of the circuit breaker.

[0031] Reference Figure 3 The movable block 33 has a through hole 331 for the fastening bolt 341 to pass through, allowing the movable block 33 to slide along the length of the fastening bolt 341, thus limiting the sliding of the movable block 33. A fixing block 332 is bolted to the surface of the movable block 33 near the circuit breaker. The fixing block 332 is C-shaped and located at the swing switch of the circuit breaker. When the movable block 33 slides on the positioning frame 31, it drives the swing switch of the circuit breaker to swing via the fixing block 332, realizing the opening and closing operation of the circuit breaker.

[0032] Reference Figure 3 and Figure 4 A rotating block 321 is fixedly connected to the surface of the rotating disk 32, and a moving hole 333 is provided on the surface of the moving block 33 for the rotating block 321 to be inserted. The length direction of the moving hole 333 is perpendicular to the sliding direction of the moving block 33.

[0033] Reference Figure 3 When the rotating disk 32 rotates, the rotating disk 32 drives the moving block 33 to slide on the positioning frame 31 through the rotating block 321. The moving block 33 drives the swing switch of the circuit breaker to swing through the fixed block 332, so as to realize the opening and closing operation of the circuit breaker.

[0034] Reference Figure 2 and Figure 3 An operating structure 4 is provided on the outer surface of the door 2. The operating structure 4 is used to drive the rotating disk 32 to rotate. The operating structure 4 includes an operating frame 41 and an operating block 42. The operating frame 41 is fixedly connected to the outer surface of the door 2 by bolts. The operating block 42 is rotatably connected to the operating frame 41. The operating block 42 can be inserted into the rotating disk 32 and is used to drive the rotating disk 32 to rotate.

[0035] Reference Figure 2 and Figure 3 When the user rotates the operating block 42, the operating block 42 rotates the rotating disk 32, and the rotating disk 32 drives the moving block 33 to slide on the positioning frame 31. The moving block 33 drives the swing switch of the circuit breaker to swing through the fixed block 332, thereby realizing the opening and closing operation of the circuit breaker.

[0036] The implementation principle of Example 1 is as follows: When the user drives the operating block 42 to rotate, the operating block 42 drives the rotating disk 32 to rotate, the rotating disk 32 drives the moving block 33 to slide on the positioning frame 31, and the moving block 33 drives the swing switch of the circuit breaker to swing through the fixed block 332, so as to realize the opening and closing operation of the circuit breaker. Example

[0037] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the operating structure 4 includes an operating frame 41, an operating panel 43 and an operating block 42. The operating frame 41 is fixedly connected to the door 2 by bolts. The operating frame 41 has an installation groove for the operating panel 43 to be installed.

[0038] Reference Figure 6 An operating bar 421 is fixedly connected to the surface of the operating block 42. A first operating hole 431 and a second operating hole 432 are provided on the surface of the operating disk 43. The first operating hole 431 communicates with the second operating hole 432, and is located on the side of the second operating hole 432 closest to the ground. The first operating hole 431 allows the operating bar 421 to be inserted and rotates within it. The second operating hole 432 allows the operating bar 421 to be inserted and rotates the operating disk 43.

[0039] Reference Figure 6 The operating block 42 is equipped with a weight 422, which is located on the end of the operating block 42 closest to the ground. The weight 422 is used to drive the operating block 42 to move on the operating disk 43, and the operating bar 421 moves from the second operating hole 432 to the first operating hole 431, so that the operating block 42 can rotate in the operating disk 43.

[0040] Reference Figure 6The control panel 43 has an integrally formed guide strip 433. When the control block 42 is aligned with the guide strip 433, the control strip 421 can move from the second control hole 432 to the first control hole 431. When the control block 42 is not aligned with the guide strip 433, the control strip 421 cannot move from the second control hole 432 to the first control hole 431.

[0041] Reference Figure 6 The user slides the operating block 42 away from the ground, causing the operating bar 421 to move from the first operating hole 431 to the second operating hole 432. At this time, the operating block 42 is aligned with the guide bar 433. Then the user rotates the operating block 42, causing the operating block 42 to drive the rotation of the operating disk 43.

[0042] Reference Figure 6 When the user does not touch the operation block 42, the weight 422 drives the operation block 42 to move, so that the operation bar 421 moves from the second operation hole 432 to the first operation hole 431. At this time, the operation block 42 rotates in the operation disk 43 as the weight 422 moves, so as to avoid the user accidentally touching the operation block 42 and causing the operation disk 43 to rotate.

[0043] Reference Figure 6 and Figure 7 A connecting strip 434 is fixedly connected to the surface of the operating panel 43. The connecting strip 434 is inserted into the rotating disk 32 to achieve relative fixation between the operating panel 43 and the rotating disk 32, so as to realize the opening and closing operation of the circuit breaker when the box door 2 is closed.

[0044] Reference Figure 6 A movable hole is provided on the surface of the operating block 42, and a limiting rod 423 passes through the movable hole. A first limiting hole 411 is provided on the surface of the operating frame 41 away from the door 2, and the first limiting hole 411 extends along the direction of the operating frame 41 towards the door 2. A second limiting hole 412 is provided on the wall of the first limiting hole 411, and the second limiting hole 412 extends circumferentially along the operating frame 41. The extending directions of the first limiting hole 411 and the second limiting hole 412 are different. The limiting rod 423 can be inserted into the first limiting hole 411 and the second limiting hole 412.

[0045] Reference Figure 6 The second limiting hole 412 has a first inclined surface 413 and a second inclined surface 414 on the hole wall near the door 2. Both the first inclined surface 413 and the second inclined surface 414 are inclined, and the distance between the first inclined surface 413 and the second inclined surface 414 gradually decreases along the direction from the second limiting hole 412 to the first limiting hole 411. When the limiting rod 423 is located between the first inclined surface 413 and the second inclined surface 414, the limiting rod 423 can move from the second limiting hole 412 into the first limiting hole 411, realizing the operation of the limiting rod 423 disengaging from the second limiting hole 412.

[0046] Reference Figure 6 When the limiting rod 423 is located in the first limiting hole 411 or the second limiting hole 412, the limiting rod 423 is located on the side of the operating panel 43 away from the door 2, allowing the limiting rod 423 to prevent the operating panel 43 from separating from the operating frame 41. When the user slides the operating block 42, the limiting rod 423 moves from the second limiting hole 412 to the first limiting hole 411, allowing the operating frame 41 to release the restriction on the limiting rod 423, that is, the limiting rod 423 can detach from the operating frame 41. At this time, the user can separate the operating panel 43 from the operating frame 41, realizing the quick disassembly and installation of the operating structure 4.

[0047] Reference Figure 6 When the user does not press the operation block 42, the operation block 42 slides on the operation plate 43 due to the force of the weight block 422. At this time, the limit rod 423 continues to slide in the second limit hole 412, that is, the operation block 42 restricts the operation plate 43 from disengaging from the operation frame 41, making it difficult for the operation block 42 and the operation plate 43 to separate from the operation frame 41.

[0048] Reference Figure 6 The user needs to manually adjust the tilt angle of the operating block 42 so that the limiting rod 423 is aligned with the opening of the first limiting hole 411. At this time, the operating bar 421 is between the first limiting hole 411 and the second limiting hole 412, so that the user can remove the limiting rod 423 from the first limiting hole 411 and disassemble the operating block 42 and the operating plate 43.

[0049] The implementation principle of Example 2 is as follows: The user needs to manually adjust the tilt angle of the operating block 42 so that the limiting rod 423 is aligned with the opening of the first limiting hole 411. At this time, the operating bar 421 is between the first limiting hole 411 and the second limiting hole 412, so that the user can remove the limiting rod 423 from the first limiting hole 411 and disassemble the operating block 42 and the operating plate 43.

[0050] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A dedicated mechanism for closing and opening circuit breakers in an explosion-proof distribution box, characterized in that: The circuit breaker includes a positioning frame (31), a rotating disk (32), and a moving block (33). The moving block (33) is slidably mounted on the positioning frame (31). The rotating disk (32) has a rotating block (321). The moving block (33) has a moving hole (333) for the rotating block (321) to be inserted into. The moving block (33) has a fixed block (332). The fixed block (332) is mounted on the swing switch of the circuit breaker. When the rotating disk (32) rotates, the moving block (33) slides on the positioning frame (31).

2. The circuit breaker closing and opening mechanism for an explosion-proof distribution box according to claim 1, characterized in that: The positioning frame (31) includes a first positioning piece (311), a second positioning piece (312), and a third positioning piece (313). The second positioning piece (312) is disposed between the first positioning piece (311) and the third positioning piece (313). The first positioning piece (311) and the third positioning piece (313) are used to clamp the circuit breaker. Fasteners (34) are provided on the first positioning piece (311) and the third positioning piece (313). The fasteners (34) are used to drive the first positioning piece (311) and the third positioning piece (313) to press against the circuit breaker.

3. The circuit breaker closing and opening mechanism for an explosion-proof distribution box according to claim 2, characterized in that: The fastener (34) includes a fastening bolt (341) and a fastening nut (342). The movable block (33) has a through hole (331) through which the fastening bolt (341) passes. The movable block (33) slides along the length of the fastening bolt (341).

4. The circuit breaker closing and opening mechanism for an explosion-proof distribution box according to claim 3, characterized in that: The length direction of the movable hole (333) is perpendicular to the length direction of the fastening bolt (341).

5. An explosion-proof distribution box, comprising a box body (1) and a box door (2), wherein the box body (1) is provided with a placement slot (11), and the box door (2) is rotatably connected to the box body (1), characterized in that: Includes the special mechanism (3) as described in claim 1, wherein the box door (2) is provided with a through hole (21) for the installation of the special mechanism (3), and an operating structure (4) is rotatably connected to the box door (2), the operating structure (4) being used to drive the rotating disk (32) to rotate.

6. The explosion-proof distribution box according to claim 5, characterized in that: The operating structure (4) includes an operating frame (41), an operating disc (43), and an operating block (42). The operating frame (41) is mounted on the door (2). The operating disc (43) is rotatably connected to the operating frame (41). The operating block (42) is provided with an operating bar (421). The operating disc (43) has a first operating hole (431) and a second operating hole (432) that are interconnected. The first operating hole (431) is for the operating bar (421) to rotate, and the second operating hole (432) is for the operating bar (421) to be inserted. When the operating bar (421) is inserted into the second operating hole (432), the operating block (42) is used to drive the operating disc (43) to rotate. When the operating bar (421) is inserted into the first operating hole (431), the operating block (42) rotates within the operating disc (43).

7. The explosion-proof distribution box according to claim 6, characterized in that: The operating block (42) is provided with a weight (422), and the first operating hole (431) is located on the side of the second operating hole (432) closer to the ground. The weight (422) is used to drive the operating bar (421) from the second operating hole (432) to the first operating hole (431).

8. The explosion-proof distribution box according to claim 6, characterized in that: The operating block (42) is provided with a limiting rod (423), and the operating frame (41) is provided with a first limiting hole (411) and a second limiting hole (412) that are interconnected. The extension direction of the first limiting hole (411) and the extension direction of the second limiting hole (412) are different. The limiting rod (423) is used to pass through the first limiting hole (411) and extend into the second limiting hole (412). When the limiting rod (423) is located in the first limiting hole (411), the operating block (42) can be disengaged from the operating frame (41).

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