False opening prevention device of low-voltage cabinet

Abstract

The invention belongs to the technical field of power distribution devices, and particularly relates to a mistaken opening prevention device of a low-voltage cabinet. The locking device comprises a shell, a sliding base is arranged on the inner side of the shell, a magnetic attraction sleeve sliding relative to the sliding base is arranged on the sliding base, a swing block is arranged on the outer side wall of the magnetic attraction sleeve, a spring bolt sliding plate is further arranged on the inner side of the shell, and a sliding spring bolt is hinged to a spring bolt driving block. A guide sleeve coaxial with the sliding base is arranged on the front side of the sliding base, a reset spring is arranged between the magnetic attraction sleeve and the guide sleeve, and the unlocking assembly can be connected with the magnetic attraction sleeve in a clamped mode. By means of the structure, the magnetic attraction sleeve generates position movement in a magnetic attraction force driving mode, the unlocking assembly drives the magnetic attraction sleeve to rotate, the swing block drives the spring bolt driving block to move upwards, the connecting rod drives the sliding spring bolt to move relative to the frame of the switch cabinet, and the unlocking function is achieved. Through a special unlocking mode, a worker is prevented from mistakenly operating the switch cabinet.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power distribution devices, and particularly relates to a mistaken opening prevention device of a low-voltage cabinet. BACKGROUND

[0002] The low-voltage switch cabinet is an electrical protection device, and carries circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices inside; is an important electrical equipment for opening, closing, controlling and protecting electrical equipment in the process of power generation, power transmission, power distribution and power conversion of the power system. At present, in order to prevent the electrical operation of the switch cabinet and ensure personal safety and power safety, the switch cabinet needs to be equipped with a mistaken opening prevention device. SUMMARY

[0003] The application aims to provide a mistaken opening prevention device of a low-voltage switch cabinet, which can reduce the mistaken opening of the low-voltage switch cabinet and improve the safety of the switch cabinet.

[0004] To solve the above technical problems, the application provides a mistaken opening prevention device of a low-voltage cabinet, which comprises a frame, a movable door hinged to the frame, and a locking device arranged on the movable door. The locking device comprises a shell, a sliding base arranged on the inner side of the shell, a magnetic sleeve arranged on the sliding base and capable of sliding relative to the sliding base, a swing block arranged on the outer side wall of the magnetic sleeve, two lock tongue sliding plates arranged on the inner side of the shell and parallel to each other, a sliding lock tongue arranged on the sliding lock tongue and capable of sliding relative to the sliding lock tongue, the sliding lock tongue being capable of being clamped with the frame when sliding to the outer side of the shell, a lock tongue driving block hinged to the sliding lock tongue and capable of sliding in the up-down direction of the lock tongue sliding plate, a lock tongue elastic element arranged between the lock tongue driving block and the lock tongue sliding plate, a connecting rod arranged between the lock tongue driving block and the sliding lock tongue, and the two ends of the connecting rod being hinged to the lock tongue driving block and the sliding lock tongue, respectively. The front side of the sliding base is provided with a guide sleeve coaxial with the sliding base, the guide sleeve is arranged on the front side wall inside the shell, the guide sleeve has a hollow structure and penetrates through the outer side of the shell, a return spring is arranged between the magnetic sleeve and the guide sleeve, the return spring can make the magnetic sleeve be located at the rear side of the shell, and the inner side of the guide sleeve can be put into an unlocking assembly for adsorbing the magnetic sleeve, and the unlocking assembly can be clamped with the magnetic sleeve.

[0005] Preferably, the magnetic sleeve is provided with a sleeve limiting block, the sleeve limiting block is arranged on the outer surface of the magnetic sleeve away from the swing block, the sleeve limiting block extends from front to back on the magnetic sleeve, the sleeve limiting block is in contact with the plane of the sliding base, the guide sleeve is provided with a limiting groove, the limiting groove extends from one side to the other side of the guide sleeve close to the sliding base, and the cross section of the limiting groove is a quarter of a circular ring, the depth of the limiting groove is greater than the length of the sleeve limiting block.

[0006] Preferably, the shell is provided with a shielding cover, the shielding cover shields the guide sleeve, and the shielding cover is rotationally connected to the shell.

[0007] Preferably, the shielding cover is fixedly connected with a shaft sleeve, the shaft sleeve is rotationally connected to the shell, the shaft sleeve extends from the outer side of the shell to the inner side of the shell, one end of the shaft sleeve is connected to the shielding cover, the middle part of the shaft sleeve is sleeved in the front side wall of the shell and can rotate and axially move, the other end of the shaft sleeve is connected with the shaft sleeve limiting ring, the distance between the shaft sleeve limiting ring and the shielding cover is greater than the wall thickness of the shell; the shielding cover is provided with a first avoiding groove, the first avoiding groove extends from the shielding cover to the shaft sleeve limiting ring, a second avoiding groove is arranged on the side close to the shaft sleeve limiting ring, the second avoiding groove is a quarter of a circular ring, one end of the second avoiding groove penetrates the first avoiding groove, and the other end of the second avoiding groove extends along the circumferential surface of the shaft sleeve; the first avoiding groove and the second avoiding groove both penetrate the inner side of the shaft sleeve.

[0008] Preferably, the shell is provided with a shielding groove, and the shielding groove can accommodate the shielding cover.

[0009] Preferably, the shielding groove is similar in shape to the shielding cover.

[0010] Preferably, the unlocking assembly comprises two first hand-held parts and second hand-held parts connected in flexibility, and the first hand-held part and the second hand-held part are connected by an elastic cord; one end of the second hand-held part is provided with a magnetic end, and a magnet is arranged at the end of the magnetic end; the end of the magnetic end is also provided with a clamping end, the clamping end can be clamped with the magnetic sleeve to enable the second hand-held part to drive the magnetic sleeve to rotate; the clamping end can enter the inside of the magnetic sleeve, and a plurality of clamping grooves are arranged on the outer circumferential surface of the clamping end, the clamping grooves are clamped with the magnetic sleeve, and a clamping boss corresponding to the clamping grooves is arranged on the inner wall of the magnetic sleeve; the end of the first hand-held part is provided with a shielding release end, the end of the shielding release end is provided with a release boss, and the release boss can release the restriction of the limiting slide block on the shaft sleeve.

[0011] The application drives the magnetic attraction sleeve to move by using the magnetic attraction force, and drives the magnetic attraction sleeve to rotate by the unlocking assembly, so that the swing block drives the lock tongue driving block to move upward, and the sliding lock tongue connected with the connecting rod moves relative to the frame of the switch cabinet, thereby realizing the unlocking function. The special unlocking mode distinguishes the switch cabinet from other switch cabinets, thereby preventing the staff from operating the switch cabinet incorrectly. The shielding cover arranged on the shell can shield the guide sleeve, thereby preventing other persons from placing the magnet inside the guide sleeve and causing the magnetic attraction sleeve to move. Meanwhile, the shielding cover can also prevent other foreign matters from entering the inside of the guide sleeve. The shielding cover and the shielding groove on the shell are matched in shape, so that the shielding cover can be placed inside the shielding groove, thereby increasing the aesthetic appearance and effectively preventing external foreign matters from entering the inside of the guide sleeve. A special shielding release end is arranged on the unlocking assembly, thereby further reducing the possibility of the switch cabinet being operated incorrectly. BRIEF DESCRIPTION OF DRAWINGS

[0012] The application will be further described in detail below in combination with the drawings and specific embodiments:

[0013] Figure 1 It is a schematic diagram of the overall structure of the application;

[0014] Figure 2 It is a schematic diagram of the overall structure of the locking device in the application;

[0015] Figure 3 It is a schematic diagram of the internal structure of the locking device in the application;

[0016] Figure 4 It is a partial sectional view of the internal structure of the locking device in the application;

[0017] Figure 5 It is a schematic diagram of the connection relationship between the lock tongue driving block and the lock tongue sliding plate in the application;

[0018] Figure 6 It is a schematic diagram of the position relationship of the limiting groove in the application;

[0019] Figure 7 It is a schematic diagram of the structure of the guide sleeve in the application;

[0020] Figure 8 It is a schematic diagram of the position relationship between the shielding cover and the shell in the application;

[0021] Figure 9 It is a schematic diagram of the connection relationship between the shielding cover and the shell in the application;

[0022] Figure 10 It is a partial enlarged view of A in the application;

[0023] Figure 11It is the schematic view of position relation structure of first and second avoiding grooves in the application;

[0024] Figure 12 It is the schematic view of installation position of limiting sliding seat in the application;

[0025] Figure 13 It is the local enlarged view of B in the application;

[0026] Figure 14 It is the schematic view of structure of unlocking assembly in the application;

[0027] In the figure: 1-frame, 2-movable door, 3-locking device, 301-housing, 302-sliding base, 303-magnetic suction sleeve, 304-rocker block, 305-lock tongue sliding plate, 306-sliding lock tongue, 307-guide sleeve, 308-lock tongue driving block, 309-connecting rod, 310-lock tongue elastic member, 311-sleeve limiting block, 312-limiting groove, 313-ear, 314-return spring, 401-shielding cover, 402-shaft sleeve, 403-shaft sleeve limiting ring, 404-first avoiding groove, 405-second avoiding groove, 406-limiting sliding block, 407-limiting sliding seat, 408-inclined surface, 409-shielding groove, 501-first hand-held part, 502-second hand-held part, 503-shielding release end, 504-release boss, 505-clamping end, 506-magnetic suction end, 507-clamping groove. DETAILED DESCRIPTION

[0028] Referring to the drawings Figure 1 The application provides a mistaken opening prevention device of low-voltage cabinet, which comprises a frame 1, a movable door 2 is hinged to the frame 1, one side of the movable door 2 is hinged to the frame 1, and the other side of the movable door 2 can be opened and closed relative to the frame 1, so that the opening and closing of the inside of the switch cabinet are realized; the movable door 2 is provided with a locking device 3, the locking device 3 is fixedly connected to the movable door 2, and the locking device 3 can be clamped with the frame 1, so that the locking of the movable door 2 is realized.

[0029] See Figures 2 to 5The locking device 3 comprises a shell 301 mounted on the movable door 2 to connect the locking device 3 with the movable door 2. The inner side of the shell 301 is provided with a sliding base 302 in the shape of a semi-circular ring and made of copper. The sliding base 302 is fixed to the inner side of the shell 301. One side of the sliding base 302 is connected to the rear side wall of the shell 1, and the other side of the sliding base 302 extends to the front side of the shell 301. The sliding base 302 is provided with a magnetic sleeve 303 sliding thereon. The front and rear directions of the sliding base 302 are provided with arc-shaped grooves. The magnetic sleeve 303 is arranged in the arc-shaped grooves and slides thereon. The outer side wall of the magnetic sleeve 303 is provided with a swing block 304 which can slide with the magnetic sleeve 303 relative to the sliding base 302. In the drawings, the left side is the front side. The inner side of the shell 301 is further provided with two parallel lock tongue sliding plates 305. The upper ends of the two lock tongue sliding plates 305 are connected to the shell 301. The inner sides of the two lock tongue sliding plates 305 are provided with sliding lock tongues 306 sliding thereon. The lock tongue sliding plates 305 are each provided with a slide. The sliding lock tongues 306 are arranged in the slides. The slides can limit the positions of the sliding lock tongues 306 and ensure the sliding of the sliding lock tongues 306 relative to the lock tongue sliding plates 305. When the sliding lock tongues 306 slide to the outer side of the shell 301, they can be clamped with the frame 1, thereby limiting the rotation of the movable door 2 relative to the frame 1. Figure 5 The lock tongue driving blocks 308 are hingedly connected to the sliding lock tongues 306. The lock tongue driving blocks 308 are arranged below the sliding lock tongues 306 and can slide in the up and down directions of the lock tongue sliding plates 305. Referring to

[0030] The front side of the sliding base 302 is provided with a guide sleeve 307 coaxial with the sliding base 302, the guide sleeve 307 is arranged on the front side wall inside the shell 301, the guide sleeve 307 is in a hollow structure and penetrates through the outer side of the shell 301, a reset spring 314 is arranged between the guide sleeve 307 and the magnetic suction sleeve 303, the reset spring 314 can enable the magnetic suction sleeve 303 to be located at the rear side of the shell 301; the inner side of the guide sleeve 307 can be put into an unlocking assembly for adsorbing the magnetic suction sleeve 303, the unlocking assembly is provided with a magnet, the magnet can generate an adsorption effect on the magnetic suction sleeve 303 so as to enable the magnetic suction sleeve 303 to move towards the front side of the shell 301, and simultaneously the unlocking assembly can be clamped with the magnetic suction sleeve 303, and the unlocking assembly can drive the magnetic suction sleeve 303 to rotate when the unlocking assembly rotates.

[0031] According to the above structure, when the switch cabinet is in a locking state, the magnetic suction sleeve 303 is located at the rear side of the rear end of the shell 301 under the action of the reset spring 314, the swing block 304 is also located at the rear side simultaneously with the magnetic suction sleeve 303, at this time, the latch driving block 308 is not in contact with the swing block 304, the latch driving block 308 is located at the lower end position under the action of the latch elastic element 310, the latch driving block 308 enables the sliding latch 306 to extend out of the shell 301 through the connecting rod 309, the sliding latch 306 is in contact with the frame 1 so as to limit the swing of the movable door 2 relative to the frame 1, and the locking of the movable door 2 is realized; when it is needed to open, the unlocking assembly is put into the guide sleeve 307, the magnet on the unlocking assembly generates an adsorption effect on the magnetic suction sleeve 303, the adsorption force is greater than the elastic force of the reset spring 314, so that the magnetic suction sleeve 303 moves close to the front side of the shell 1, the magnetic suction sleeve 303 drives the swing block 304 to move, since the magnetic suction sleeve is clamped with the unlocking assembly and can rotate simultaneously, when the magnetic suction sleeve 303 rotates, the magnetic suction sleeve drives the swing block 304 to swing, the swing block 304 is in contact with the latch driving block 308 and drives the latch driving block, along with the upward swing of the swing block 304, the latch driving block 308 can be driven to move upward, the latch elastic element 310 is compressed by the latch driving block 308, and simultaneously the latch driving block 308 drives the sliding latch 306 to slide away from the frame 1 through the connecting rod 309, after the sliding latch 306 is out of contact with the frame 1, the opening of the movable door 2 is realized.

[0032] Referring to Figure 6 The magnetic suction sleeve 303 is provided with a sleeve limiting block 311, the sleeve limiting block 311 is arranged on the outer surface of the magnetic suction sleeve 303 away from the swing block 304, the sleeve limiting block 311 extends from front to back on the magnetic suction sleeve 303, the sleeve limiting block 311 is in contact with the plane of the sliding base 302, and referring to Figure 7The guide sleeve 307 is provided with a limiting groove 312, the limiting groove 312 extends from one side of the guide sleeve 307 close to the sliding base 302 to the other side, and the cross section of the limiting groove 312, that is, the section perpendicular to the axial direction of the limiting groove 312 is a quarter of a circular ring, and the depth of the limiting groove 312 is greater than the length of the sleeve limiting block 311. Through the above structure, the swing block 304 and the limiting block 311 are arranged on both sides of the outer circumferential surface of the guide sleeve 307, when the magnetic suction sleeve 303 is in the rear position, that is, the magnetic suction sleeve 303 is away from one side of the guide sleeve 307, the magnetic suction sleeve 303 cannot rotate, and the sliding lock tongue 306 cannot be removed from the contact with the frame 1, and the movable door 2 cannot be opened. When the magnetic suction sleeve 303 is in the front position, the sleeve limiting block 311 is on the inner side of the limiting groove 312, at this time, when the magnetic suction sleeve 303 is rotated, because the limiting groove 312 is a quarter of a circular ring, the sleeve limiting block 311 can rotate a certain angle in the limiting groove 312. Through the above structure, only by driving the magnetic suction sleeve 303 to rotate, the purpose of opening the switch cabinet cannot be achieved, and the possibility of mistakenly opening the switch cabinet is further reduced.

[0033] Referring to Figure 8 The shell 301 is provided with a shielding cover 401, the shielding cover 401 shields the guide sleeve 307, at this time, the unlocking assembly outside cannot enter the inner side of the guide sleeve 307, the shielding cover 401 is rotationally connected with the shell 301;

[0034] Referring to Figures 9 to 11 The shielding cover 401 is fixedly connected with a shaft sleeve 402, the shaft sleeve 402 is rotationally connected with the shell 301, the shaft sleeve 402 extends from the outer side of the shell 301 to the inner side of the shell 301, one end of the shaft sleeve 402 is connected with the shielding cover 401, the middle part of the shaft sleeve 402 is sleeved in the front side wall of the shell 301 and can rotate and axially move, the other end of the shaft sleeve 402 is connected with a shaft sleeve limiting ring 403, the distance between the shaft sleeve limiting ring 403 and the shielding cover 401 is greater than the wall thickness of the shell 301, and space is reserved for the axial movement of the shaft sleeve 402. The shielding cover 401 is provided with a first avoiding groove 404, the first avoiding groove 404 extends from the shielding cover 401 to the shaft sleeve limiting ring 403, a second avoiding groove 405 is formed on the side close to the shaft sleeve limiting ring 403, the second avoiding groove 405 is a quarter of a circular ring, one end of the second avoiding groove 405 penetrates the first avoiding groove 404, and the other end of the second avoiding groove 405 extends along the circumferential surface of the shaft sleeve 402. The first avoiding groove 404 and the second avoiding groove 405 both penetrate the inner side of the shaft sleeve 402.

[0035] Figure 10 The shell 301 is provided with a shielding groove 409, the shielding groove 409 can accommodate the shielding cover 401; preferably, the shielding groove 409 is similar in shape to the shielding cover 401.

[0036] Referring toFigure 12 And Figure 13 The inner side of the shell 301 is provided with a limiting sliding seat 407, the inner side of the limiting sliding seat 407 is provided with a limiting sliding block 406 capable of sliding relative to the limiting sliding seat 407, and the limiting sliding block 406 can limit the circumferential movement of the shaft sleeve 402; the front and rear width dimensions of the limiting sliding block 406 are not greater than the front and rear width dimensions of the second avoiding groove 405; a spring for enabling the limiting sliding block 406 to be in an ejection state is arranged between the limiting sliding block 406 and the limiting sliding seat 407, the limiting sliding block 406 is arranged to extend into the space between the shaft sleeve limiting ring 403 and the shell 301 when the limiting sliding block 406 extends, and the limiting sliding block 406 occupies the movement space of the shaft sleeve 402, thereby limiting the axial movement of the shaft sleeve 402. Figure 10 In the limiting sliding block 406, the lower end of the limiting sliding block 406 is provided with an inclined surface 408 close to one side of the first avoiding groove 404, which facilitates the upward sliding of the limiting sliding block 406.

[0037] Referring to Figure 14 The unlocking assembly comprises two flexible first and second hand-held parts 501 and 502, and the first and second hand-held parts 501 and 502 are connected by a spring wire, so that the two hand-held parts are connected with each other and can also be operated separately. One end of the second hand-held part 502 is provided with a magnetic suction end 506, a magnet is arranged at the end of the magnetic suction end 506, the magnetic suction end 506 extends into the inner side of the guide sleeve 307, the magnet at the end of the magnetic suction end 506 generates an adsorption effect on the magnetic suction sleeve 303, the magnetic suction force drives the magnetic suction sleeve 303 to move in the direction of the front side of the shell 301, and the end of the magnetic suction end 506 is also provided with a clamping end 505, the clamping end 505 can be clamped with the magnetic suction sleeve 303, so that the second hand-held part 502 can drive the magnetic suction sleeve 303 to rotate, the clamping end 505 can enter the inner side of the magnetic suction sleeve 303, and a plurality of clamping grooves 507 are arranged on the outer circumferential surface of the clamping end 505, the clamping grooves 507 are clamped with the magnetic suction sleeve 303, and a clamping boss corresponding to the clamping grooves 507 is arranged on the inner wall of the magnetic suction sleeve 303. The end of the first hand-held part 501 is provided with a shielding release end 503, the end of the shielding release end 503 is provided with a release boss 504, and the release boss 504 can release the limitation of the limiting sliding block 406 on the shaft sleeve 402.

[0038] According to the above structure, when the movable door 2 is in a locked state, Figure 10 In the limiting sliding block 406, the lower end of the limiting sliding block 406 is provided with an inclined surface 408 close to one side of the first avoiding groove 404, which facilitates the upward sliding of the limiting sliding block 406. Figure 13 In the limiting sliding block 406, the lower end of the limiting sliding block 406 is provided with an inclined surface 408 close to one side of the first avoiding groove 404, which facilitates the upward sliding of the limiting sliding block 406. At this time, the shielding cover 401 cannot move, and the external unlocking assembly cannot enter the inner side of the guide sleeve 307.Figure 10 and Figure 14 When the shielding release end 503 is placed on the inner side of the shaft sleeve 402, and the release boss 504 is aligned with the first avoiding slot 404, when the release boss 504 moves to the range of the second avoiding slot 405 along the first avoiding slot 404, the shielding release end 503 is rotated to make the release boss 504 continue to move along the second avoiding slot 405, when the release boss 504 contacts the inclined surface 408 at the end of the limiting sliding block 406, the inclined surface 408 is subjected to a force to drive the limiting sliding block 406 to move upward, so that the limiting sliding block 406 is out of the shaft sleeve limiting ring 403 and the shell 301, at this time, the shaft sleeve 402 can move forward, so that the shielding cover 401 is separated from the shielding slot 409, the shielding cover 401 is rotated to release the shielding of the guide sleeve 307; then the magnetic attraction end 506 is placed in the inside of the guide sleeve 307, the magnet on the magnetic attraction end 506 generates an attractive force on the magnetic attraction sleeve 303, drives the magnetic attraction sleeve 303 to move close to the front side of the shell 301, the clamping end 505 can enter the inside of the magnetic attraction sleeve 303, the clamping end 505 is clamped with the magnetic attraction sleeve 303, when the second handheld part 502 is rotated, the second handheld part 502 drives the magnetic attraction sleeve 303 to rotate through the clamping end 505 arranged on the magnetic attraction end 506, so as to drive the sliding lock tongue 306 to move away from the frame 1, and realize the unlocking function.

[0039] The application realizes the unlocking function through the above structure, the driving mode of the magnetic attraction force is used to make the magnetic attraction sleeve move, the unlocking assembly drives the magnetic attraction sleeve to rotate, the swing block driving lock tongue driving block moves upward, the sliding lock tongue connected with the connecting rod moves relative to the frame of the switch cabinet, and the unlocking function is realized. The special unlocking mode is used to distinguish the switch cabinet from other switch cabinets, so as to prevent the staff from operating the switch cabinet incorrectly, the shielding cover arranged on the shell can shield the guide sleeve, other people cannot place the magnet in the inside of the guide sleeve, and the magnetic attraction sleeve cannot move. Meanwhile, the shielding cover can prevent other foreign matters from entering the inside of the guide sleeve, and the special shielding release end is arranged on the unlocking assembly, so as to further reduce the possibility that the switch cabinet is operated incorrectly.

[0040] Of course, the above description is not a limitation of the application, the changes, modifications, additions or replacements made by the person skilled in the art within the essential range of the application should also belong to the protection range of the application.

Claims

1. A device for preventing accidental opening of a low-voltage switchgear, comprising a frame, wherein a movable door is hinged to the frame, characterized in that, The movable door is equipped with a locking device; The locking device includes a housing, an inner sliding base, a magnetic sleeve that slides relative to the sliding base, a swing block on the outer wall of the magnetic sleeve, two parallel locking tongue sliding plates on the inner side of the housing, and a sliding locking tongue that slides relative to the inner side of the two locking tongue sliding plates. When the sliding locking tongue slides to the outer side of the housing, it can engage with the frame. The sliding locking tongue is hinged to a locking tongue driving block, which can slide vertically relative to the locking tongue sliding plates. A locking tongue elastic element is provided between the locking tongue driving block and the locking tongue sliding plates. A connecting rod is provided between the locking tongue driving block and the sliding locking tongue, with the two ends of the connecting rod respectively hinged to the locking tongue driving block and the sliding locking tongue. The sliding base has a guide sleeve coaxial with it on its front side. The guide sleeve is disposed on the front side wall inside the housing. The guide sleeve has a hollow structure and extends through the outside of the housing. A return spring is provided between the magnetic sleeve and the guide sleeve. The return spring can keep the magnetic sleeve in the rear position of the housing. An unlocking component for attracting the magnetic sleeve can be placed inside the guide sleeve. The unlocking component can engage with the magnetic sleeve.

2. The anti-misoperation device for a low-voltage switchgear as described in claim 1, characterized in that, The magnetic sleeve is provided with a sleeve limiting block, which is located on the outer surface of the magnetic sleeve away from the swing block. The sleeve limiting block extends from front to back on the magnetic sleeve and contacts the plane of the sliding base. The guide sleeve is provided with a limiting groove, which extends from the side of the guide sleeve near the sliding base to the other side. The cross-section of the limiting groove is quarter-circular, and the depth of the limiting groove is greater than the length of the sleeve limiting block.

3. The anti-misoperation device for a low-voltage switchgear as described in claim 1, characterized in that, The housing is provided with a cover that covers the guide sleeve and is rotatably connected to the housing.

4. The anti-misoperation device for a low-voltage switchgear as described in claim 3, characterized in that, The shielding cover is fixedly connected to a bushing, which is rotatably connected to the housing. The bushing extends from the outer side of the housing to the inner side of the housing. One end of the bushing is connected to the shielding cover, and the middle part of the bushing is fitted into the front sidewall of the housing and can rotate and move axially. The other end of the bushing is connected to a bushing limiting ring, and the distance between the bushing limiting ring and the shielding cover is greater than the wall thickness of the housing. The shielding cover has a first clearance groove that extends rearward from the shielding cover to the bushing limiting ring. A second clearance groove is formed on the side near the bushing limiting ring. The second clearance groove is quarter-circular, with one end penetrating the first clearance groove and the other end extending along the circumferential surface of the bushing. Both the first and second clearance grooves penetrate the inner side of the bushing.

5. The anti-misoperation device for a low-voltage switchgear as described in claim 4, characterized in that, The housing has a shielding groove, which can accommodate the shielding cover.

6. The anti-misoperation device for a low-voltage switchgear as described in claim 5, characterized in that, The shielding groove is similar in shape to the shielding cover.

7. The anti-misoperation device for a low-voltage switchgear as described in claim 6, characterized in that, The unlocking assembly includes two flexibly connected first and second handheld parts, connected by an elastic cord. One end of the second handheld part has a magnetic end with a magnet attached to its end. The magnetic end also has a locking end that engages with the magnetic sleeve, allowing the second handheld part to drive the magnetic sleeve to rotate. The locking end can enter the inner side of the magnetic sleeve, and its outer circumferential surface has multiple locking grooves that engage with the magnetic sleeve. The inner wall of the magnetic sleeve has locking protrusions corresponding to the locking grooves. The end of the first handheld part has a blocking release end with a release protrusion that releases the restriction of the limiting slider on the bushing.

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